Mitsubishi Heavy Industries KX6 Series Service Manual
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Mitsubishi Heavy Industries KX6 Series Service Manual

Mitsubishi Heavy Industries KX6 Series Service Manual

Inverter driven multi-indoor unit climate control system
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SERVICE MANUAL
INVERTER DRIVEN MULTI-INDOOR UNIT
CLIMATE CONTROL SYSTEM
Alternative refrigerant R410A use models
(OUTDOOR UNIT)
KX6 series
FDC224KXE6, 280KXE6, 335KXE6
(INDOOR UNIT) -KX6 series-
FDT28KXE6A
36KXE6A
45KXE6A
56KXE6A
71KXE6A
90KXE6A
112KXE6A
140KXE6A
160KXE6A
FDUM22KXE6
28KXE6
36KXE6
45KXE6
56KXE6
71KXE6
90KXE6
112KXE6
140KXE6
FDUH22KXE6
28KXE6
36KXE6
Note:
•
Aboat the Duct Connected-High static Pressure-type Outdoor Air Processing Unit Series
FDU500〜1800FKXE6, look at DATA BOOK No.'08
(Heat pump type)
FDTC22KXE6A
FDTW28KXE6
28KXE6A
36KXE6A
45KXE6A
56KXE6A
FDQS22KXE6
FDK22KXE6
28KXE6
36KXE6
45KXE6
56KXE6
FDTS45KXE6
45KXE6
71KXE6
56KXE6
71KXE6
90KXE6
112KXE6
140KXE6
FDE36KXE6A
28KXE6
45KXE6A
36KXE6
56KXE6A
45KXE6
71KXE6A
56KXE6
112KXE6A
71KXE6
140KXE6A
KX-DB-122 of the separate volume
•
DRAFT
Manual No. '09
KX-SM-125D
•
FDTQ22KXE6
FDU71KXE6
28KXE6
36KXE6
FDFL28KXE6
FDFU28KXE6
45KXE6
71KXE6
90KXE6
112KXE6
140KXE6
224KXE6
280KXE6
45KXE6
56KXE6
71KXE6

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  • Page 1 KX-SM-125D • SERVICE MANUAL INVERTER DRIVEN MULTI-INDOOR UNIT CLIMATE CONTROL SYSTEM Alternative refrigerant R410A use models (OUTDOOR UNIT) KX6 series (Heat pump type) FDC224KXE6, 280KXE6, 335KXE6 (INDOOR UNIT) -KX6 series- FDT28KXE6A FDTC22KXE6A FDTW28KXE6 FDTS45KXE6 FDTQ22KXE6 FDU71KXE6 36KXE6A 28KXE6A 45KXE6 71KXE6...
  • Page 2 CONTENTS 1. ELECTRICAL WIRING ..................1 1.1 Outdoor unit ....................1 1.2 Indoor unit ..................... 3 2. CHARACTERISTICS OF FAN ................25 3. PIPING SYSTEM ....................33 4. APPLICATION DATE ..................35 4.1 Installation of outdoor unit ................35 4.2 Installation of indoor unit ................51 4.3 Installation of wired remote controller ............123 4.4 Setting function with the wired remote controller ........124 4.5 Notabillia as a unit designed for R410A ............ 135 5. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ....136 5.1 Wired remote controller (Opitional parts) ..........
  • Page 5 CNA〜Z Connector Remote Control PCB controller Drain motor Th  t° Ｃ F200−203 Fuse Th −R1 t° Ｉ Ｉ Fan motor Signal line CNK1 （Shielded cord） Float switch Y／GN Th −R2 t° Ｉ JSL1 Live Superlink terminal setting（for spare） Signal line Connector for branching  between indoor units LED・2 controllerof heat recovery Indication lamp Th −R3 t° Ｉ  3−pipe systems （Green−Normal operation） Power PCB Y／GN LED・3 Y／GN CNW2 CNW3...
  • Page 6 Color Marks CNA〜Z Connector Stepping motor SW7−1 Operation check,Drain motor test run Mark Color Drain motor （For electronic expansion valve） Terminal block（Power source） BK Black F200〜203 Fuse Indoor unit address：tens place （□ mark） Blue Fan motor Indoor unit address：ones place Terminal block（Signal line） （口mark） BR Brown Float switch Outdoor unit address：tens place Thermistor（Remote controller） Gray JSL1 Live Superlink terminal setting（for spare） Outdoor unit address：ones place Th −A Thermistor（Return air） Orange LED・2 Indication lamp SW5−1 Th −R1,2,3 Thermistor（Heat exchanger） Pink Automatic adjustment／Fixed （Green−Normal operation）...
  • Page 7 Color Marks Mark Color Capacitor for FM Black CNA〜Z Connector Blue Drain motor Brown Fuse Gray Fan  motor（with thermostat） Orange Float switch JSL1 Live Superlink terminal setting（for spare） White Yellow LED・2 Indication lamp（Green−Normal operation） Y／GN Yellow／Green LED・3 Indication lamp（Red−Inspection） 5 or 6 wires Louver motor Th −R1 Th −R2 Th −R3 Th −A Louver switch Power source line t° t° t° t° between indoor units Connector for branching  Stepping motor controller of heat recovery 220ｰ240V （for electronic expansion valve）...
  • Page 8 Color Marks Mark Color Capacitor for FM Black Connector CNA〜Z Blue Drain motor Brown Fuse Gray Fan  motor（with thermostat） Orange Float switch White JSL1 Live Superlink terminal setting（for spare） Yellow LED・2 Indication lamp（Green−Normal operation） Y／GN Yellow／Green LED・3 Indication lamp（Red−Inspection） Louver motor 5 or 6 wires Th −R1 Th −R2 Th −R3 Th −A Louver switch Power source line Stepping motor t° t° t° t° between indoor units Connector for branching  controller of heat recovery （for electronic expansion valve）...
  • Page 9 Color Marks Mark Color Capacitor for FM Black Connector CNA〜Z Blue Drain motor Brown Fuse Gray Fan  motor（with thermostat） Orange Float switch JSL1 Live Superlink terminal setting（for spare） White Yellow LED・2 Indication lamp（Green−Normal operation） Y／GN Yellow／Green LED・3 Indication lamp（Red−Inspection） Louver motor 5 or 6 wires Th −R1 Th −R2 Th −R3 Th −A Louver switch Power source line t° t° t° t° Stepping motor between indoor units Connector for branching  controller of heat recovery 220ｰ240V （for electronic expansion valve）...
  • Page 10 Color Marks Mark Color Capacitor for FM Black CNA〜Z Connector Blue Drain motor Brown Fuse Gray Light Blue Fan  motor（with thermostat） Light Green Float switch Orange JSL1 Live Superlink terminal setting（for spare） Pink LED・2 Indication lamp（Green−Normal operation） SW3 SW4 LED・3 Indication lamp（Red−Inspection） White Louver motor Yellow 5 or 6 wires Th −R1 Th −R2 Th −R3 Th −A CNL6 Louver switch Y／GN Yellow／Green 10 11 Stepping motor（for electronic expansion t°...
  • Page 11 Color Marks Mark Color Capacitor for FM Black CNA〜Z Connector Blue Drain motor Brown Fuse Gray Light Blue Fan  motor（with thermostat） Light Green Float switch Orange JSL1 Live Superlink terminal setting（for spare） Pink LED・2 Indication lamp（Green−Normal operation） SW3 SW4 LED・3 Indication lamp（Red−Inspection） White Louver motor 5 or 6 wires Yellow Th −R1 Th −R2 Th −R3 Th −A CNL6 Louver switch Y／GN Yellow／Green 10 11 t°...
  • Page 12 5 or 6 wires Power source line Th −R1 Th −R2 Th −R3 Th −A between indoor units t° t° t° t° Connector for branching controller of heat recovery 220ｰ240V 3−pipe systems CNS2 CNA2 CNN2 Power source Single−phase 220ｰ240V〜 50Hz 220V〜 60Hz CNW1 CNW2 1 2 3 4 5 6 Power source line F（3.15A） LED・2 LED・3 SW3 SW4 JSL1 CNW0 F（3.15A） Superlink（spare） CNK1 CNK2 Y／GN...
  • Page 13 5 or 6 wires Power source line Th −R1 Th −R2 Th −R3 Th −A between indoor units t° t° t° t° Connector for branching controller of heat recovery 220ｰ240V CNS2 3−pipe systems Power source CNA2 CNN2 Single−phase 220ｰ240V〜 50Hz 220V〜 60Hz CNW1 1 2 3 4 5 6 CNW2 Power source line F（3.15A） LED・2 LED・3 SW3 SW4 JSL1 CNW0 F（3.15A） Superlink（spare） CNK1 CNK2 Y／GN...
  • Page 14 5 or 6 wires Notes 1.        indicates wiring on site.       2. Use twin core cable（0.75〜1.25mm  ）at signal line between indoor unit            and outdoor unit, and signal line between indoor units.            3. Use twin core cable（0.3mm ）at remote controller line. See spec sheet          of remote controller in case that the total length is more than 100m.       4. Do not put signal line and remote controller line alongside power source line.
  • Page 15 Capacitor for FM CNA〜Z Connector Connector for branching  controller of heat recovery Th −R1 Th −R2 Th −R3 Th −A Drain motor 3−pipe systems Fuse t° t° t° t° Fan  motor（with thermostat） 220ｰ240V Power source line Float switch between indoor units JSL1 Live Superlink terminal setting（for spare） Power source  LED・2 Indication lamp（Green−Normal operation） （Single−phase） Control PCB CNW2 220ｰ240V〜 50Hz CNW1 LED・3 Indication lamp（Red−Inspection） Stepping motor（for electronic expansion Power source F（3.15A） line valve） LED・2 F（3.15A） CNW0 Indoor unit address: tens place Indoor unit address: ones place...
  • Page 16 Capacitor for FM CNA〜Z Connector Connector for branching  Fuse controller of heat recovery Th −R1 Th −R2 Th −R3 Th −A 3−pipe systems Fan  motor（with thermostat） t° t° t° t° 220ｰ240V Float switch Power source line JSL1 Live Superlink terminal setting（for spare） between indoor units Power source  LED・2 Indication lamp（Green−Normal operation） （Single−phase） LED・3 Indication lamp（Red−Inspection） Control PCB CNW2 220ｰ240V〜 50Hz CNW1 220V〜 60Hz Stepping motor（for electronic expansion F（3.15A） Power source valve） LED・2 line F（3.15A） CNW0 Indoor unit address: tens place Indoor unit address: ones place...
  • Page 17 Color Marks Mark Color Capacitor for FM Black CNA〜Z Connector Blue Drain motor Brown Gray Fuse Orange Fan  motor（with thermostat） Float switch White Live Superlink terminal setting Yellow JSL1 （for spare） Th −R1 Th −R2 Th −R3 Th −A Y／GN Yellow／Green Indication lamp t° t° t° t° LED・2 （Green−Normal operation） Connector for branching  LED・3 Indication lamp（Red−Inspection） 220ｰ240V controller of heat recovery 3−pipe systems Stepping motor Power source line between indoor units （for electronic expansion valve）...
  • Page 18 Color Marks Mark Color Capacitor for FM Black CNA〜Z Connector Blue Drain motor Brown Fuse Gray Orange Fan  motor（with thermostat） Float switch White Live Superlink terminal setting JSL1 Yellow （for spare） Th −R1 Th −R2 Th −R3 Th −A Y／GN Yellow／Green Indication lamp LED・2 t° t° t° t° （Green−Normal operation） Connector for branching  LED・3 Indication lamp（Red−Inspection） 220ｰ240V controller of heat recovery Stepping motor 3−pipe systems Power source line （for electronic expansion valve）...
  • Page 19 5 or 6 wires Power source line Th −R1 Th −R2 Th −R3 Th −A between indoor units t° t° t° t° Connector for branching controller of heat recovery 3−pipe systems 220ｰ240V Power source CNA2 CNN3 CNN4 CNN5 Single−phase 220ｰ240V〜 50Hz 1 2 3 4 5 6 CNW1 CNW2 Power source line F（3.15A） LED・2 LED・3 SW3 SW4 JSL1 CNW0 F（3.15A） Superlink（spare） CNK1 CNK2 Y／GN...
  • Page 20 Power source （Single−phase） CNA〜Z Connector 220ｰ240V〜50Hz 220ｰ240V 220V〜60Hz F,F202 Fuse −R1 Th −R2 Th −R3 −A       Fan motor（with thermostat） Power source line between indoor units t° t° t° t° JSL1 Live Superlink terminal setting（for spare） Connector for branching LED・2 Indication lamp（Green−Normal operation） controller of heat recovery LED・3 Indication lamp（Red−Inspection） 3−pipe systems Louver motor Control PCB CNW1 Stepping motor Option CNW2 （for electronic expansion valve） （3.15A）...
  • Page 21 Power source （Single−phase） CNA〜Z Connector 220ｰ240V 220ｰ240V〜50Hz F,F202 Fuse −R1 Th −R2 Th −R3 −A 220V〜60Hz       Fan motor（with thermostat） Power source line t° t° t° t° JSL1 Live Superlink terminal setting（for spare） between indoor units Connector for branching LED・2 Indication lamp（Green−Normal operation） controller of heat recovery LED・3 Indication lamp（Red−Inspection） 3−pipe systems Louver motor Control PCB CNW1 Option Stepping motor CNW2 （for electronic expansion valve） （3.15A）...
  • Page 22 Color Marks Mark Color Capacitor for FM Black CNA〜Z Connector Blue Fuse Brown Fan  motor（with thermostat） Orange Live Superlink terminal  JSL1 Pink setting（for spare） Indication lamp LED・2 White （Green−Normal operation） Yellow Indication lamp LED・3 Y／GN Yellow／Green （Red−Inspection） Louver motor Stepping motor （for electronic expansion valve） 5 or 6 wires Th −R1 Th −R2 Th −R3 Th −A Indoor unit address: tens place Indoor unit address: ones place t° t° t° t° Power source line Outdoor unit address: tens place Connector for branching ...
  • Page 23 Color Marks Mark Color Capacitor for FM Black CNA〜Z Connector Blue Fuse Brown Fan  motor（with thermostat） Orange Live Superlink terminal  JSL1 Pink setting（for spare） Indication lamp LED・2 White （Green−Normal operation） Yellow Indication lamp LED・3 Y／GN Yellow／Green （Red−Inspection） Louver motor Stepping motor （for electronic expansion valve） 5 or 6 wires Th −R1 Th −R2 Th −R3 Th −A Indoor unit address: tens place Indoor unit address: ones place t° t° t° t° Power source line Outdoor unit address: tens place Connector for branching ...
  • Page 24 Color Marks Mark Color Mark Color Black CF  Capacitor for FM  Blue RD／Y Red／Yellow CNA〜Z Connector 5 or 6 wires Brown White − − − − Gray Yellow Fuse Orange Y／GN Yellow／Green t° t° t° t° Fan motor（with thermostat） Connector for branching 220ｰ240V Power source line controller of heat recovery JSL1 Live Superlink terminal setting（for spare） between indoor units CNN3 CNN4 CNN5 CNH2 3−pipe systems...
  • Page 25 Color Marks Mark Color Mark Color Black Capacitor for FM   Blue RD／Y Red／Yellow CNA〜Z Connector Brown White 5 or 6 wires − − − − Gray Yellow Fuse Orange Y／GN Yellow／Green t° t° t° t° Tr  Fan motor（with thermostat） Connector for branching 220ｰ240V Power source line controller of heat recovery JSL1 Live Superlink terminal setting（for spare） between indoor units CNN3 CNN4 CNN5 CNH2...
  • Page 26 Color Marks Mark Color Black Blue Brown Gray Orange 5 or 6 wires White −R1 Th −R2 Th −R3 −A Capacitor for FM  Yellow CNA〜Z Connector Y／GN Yellow／Green t° t° t° t° Fuse 220Vｰ240V Fan motor（with thermister） JSL1 Live Superlink terminal setting（for spare） Connector for branching controller of heat recovery 3−pipe systems LED・2 Indication lamp（Green−Normal operation） LED・3 Indication lamp（Red−Inspection） CNW1 CNW2 1 2 3 4 5 6 Stepping motor Power Source （For electronic expansion valve）...

  • Page 27: Characteristics Of Fan

    2. CHARACTERISTICS OF FAN (1) Ceiling cassette-1 way compact type (FDTQ) (Only when FDTQ22, 28 and 36 model are used for the Duct panel type.) Models FDTQ22, 28 36KXE6 Lower Upper limit limit Air flow(m /min) (2) Duct connected-Middle static pressure (FDUM) •...
  • Page 28 Model FDUM22KXE6 50Hz 60Hz [Standard] [Standard] 2-spot blower 2-spot blower internal resistance internal resistance Square duct blower internal resistance Square duct blower internal resistance Lower Upper Lower Upper limit limit limit limit Air flow(m /min) Air flow(m /min) Models FDUM28KXE6,36KXE6 50Hz 60Hz [Standard]...
  • Page 29 Model FDUM45KXE6, 56KXE6 50Hz 60Hz [Standard] 2-spot blower internal resistance [Standard] 2-spot blower internal resistance Square duct blower internal resistance Square duct blower internal resistance 15.5 15.5 Lower Upper Lower Upper limit limit limit limit Air flow(m /min) Air flow(m /min) Models FDUM71KXE6 50Hz...
  • Page 30 Model FDUM90KXE6 50Hz 60Hz 2-spot blower internal resistance 2-spot blower internal resistance [Standard]3-spot blower internal resistance [Standard]3-spot blower internal resistance Square duct blower internal resistance Square duct blower internal resistance Lower Upper Lower Upper Air flow(m /min) Air flow(m /min) limit limit limit...
  • Page 31 Model FDUM140KXE6 50Hz 60Hz 3-spot blower internal resistance 3-spot blower internal resistance [Standard] [Standard] 4-spot blower internal resistance 4-spot blower internal resistance Square duct blower internal resistance Square duct blower internal resistance Lower Upper Lower Upper Air flow(m /min) Air flow(m /min) limit limit...
  • Page 32 (3) Duct connected-High static pressure type (FDU) Model FDU71KXE6 Model FDU90KXE6 Standard Standard pressure pressure 33 34 35 20 21 22 23 24 25 26 27 28 29 30 Lower Upper Standard Lower Upper Standard limit limit air flow limit limit air flow Air flow(m...

  • Page 33: Standard (Factory Settings)

    Model FDU224KXE6 ■Standard (Factory Settings) • Condition of standard rating Rated air volume: 200Pa High High 50Hz 60Hz Example of duct Example of duct 38 40 Lower Upper Lower Standard Standard Upper limit limit limit limit Air flow(m /min) Air flow(m /min) Model FDU280KXE6...
  • Page 34 Static pressure Upper limit Standard : 15Pa : 30Pa (4) Duct connected (Ultra thin)-Low static pressure type (FDQS) Models FDQS22, 28, 36KXE6 Static pressure Standard : 15Pa Upper limit : 30Pa Lower limit Upper limit Air flow(m /min) Lower limit Upper limit Air flow(m /min)
  • Page 35 Cooling Heating Outdoor unit Service valve External air Thermistor Indoor unit A (Tho-A) Gas piping Heat exchanger Heat exchanger 224: ø19.05 Thermistor (Outlet) 280: ø22.22 -R3) 4-way switching solenoid High pressure sensor Thermistor (Heat exchanger) (PSH) Check (ThI-R1) joint Check joint Solinoid valve Low pressure sensor Thermistor (Return air)
  • Page 36 Cooling Heating Outdoor unit Service valve External air Thermistor Gas piping Indoor unit A (Tho-A) ø25.4 Heat exchanger Heat exchanger Thermistor (Outlet) 4-way switching solenoid High pressure sensor (ThI-R3) Thermistor (Heat exchanger) (PSH) Check -R1) joint Check joint Strainer Solinoid valve Low pressure sensor Thermistor (Return air) Check valve...

  • Page 37: Application Data

    4. APPLICATION DATA 4.1 Installation of outdoor unit MITSUBISHI HEAVY INDUSTRIES, LTD. MULTI AIR CONDITIONER OUTDOOR UNIT FOR BUILDINGS 1. BE PCB012D015C KX SERIES INSTALLATION MANUAL Cautio Outdoor unit capacity ● ● FDC224〜 335 ● ◎This installation manual deals with outdoor units and general installation specifications only. For indoor units, please refer to the respective installation manuals supplied with your ●...
  • Page 38 ● ● ● ● ● ２ ● ●     FD○△△KXE6    RC-E3(2 cores)  FD○A△△KXE4    RC-E1R(3 cores)  〜 〜 〜 〜 〜 〜 〇 〇 〇 〇 〇 〇 〇 〇 〇 〇     ・   ・   ・   ・   ●    ②...
  • Page 39 ● ） ● ） ● Ⅰ Ⅱ Ⅲ Ｌ Ｌ Ｌ Ｌ ● ● ● ● ● ● ● ●   ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ● ●...
  • Page 40 Ⅲ １ ,  ,  ,  ,  ,  ,  ,  ,  ● ● ● ● ● ● ● ●...
  • Page 41   ●   ●   ●   ● ① ② Legend   ③             ④ ① ② ● ● ③ ● ● ● ● ● ● ④   ●   ●   ●   ●  ...
  • Page 42 ・ （ ） 〜 〜 （ ） 〜 〜 （ ） 〜 〜 （ ） 〜 〜 ） 〜 〜     ●   ●   ●   ● ①  ＜ ＞ ②  ２ ２ ③ ④  ①  ②  ③ ℃...
  • Page 43 φ φ φ    ● ● ● （ ）＝ ＋（ ）＋（ ）＋（ ）＋（ ） ） ● ● ● ● ● ● ● ● ● ● ● ● ● ℃ ● ● ● ● ● ● ● ● ●...
  • Page 44 ・ ・ ・    L1・L2・L3・N 〜 Ａ1 ・ Ｂ1 〜 〈Ⅰ〉 ・・・ ・・・ 〜 〜 Ａ ・ Ｂ Ａ ・ Ｂ Ａ ・ Ｂ ・ ・ ・ ・・・ X ・ Y X ・ Y X ・ Y 〈Ⅰ〉 〈Ⅱ〉 〈Ⅷ〉 X ・...
  • Page 45 Ⅱ ● ○ △△   ○△△   ○△△   ●   ①   ② ○ △△ × ○△△ ● ● ● Ａ A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 Ａ   Ｂ Ａ...
  • Page 46 ● ※ ※ ※ ※ A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 A1 ・ B1 A2 ・ B2 Ａ...
  • Page 47   ｍｍ ① ② ③ ① ② ③ ④ ① ② ③ ④ ・ ⑤ ・ ⑥ ・ ⑦ ・ ・ ・ ・ ⑧ ・ ○○ ⑨ ⑩ ⑧ ⑪...
  • Page 48 ● ② ④ ー        ー ー ① ④        ー ② ー ー ー         ① ） ー ー        ー ー ③ ー ⑨ ⑤ ⑥ ｢ ｣ ー        ー ｢ ｣ ⑦ ｢ ｣        ー ー ｢ ｣ ⑩ ー ー...
  • Page 49 ● ① ▼ ▼ ② ⇔ ▲ ③ ▼   → →     ▲」 ④ ⇔   ▲ ▼ ⇔   ⇔ ・・・ ⇔ ▼ ⑤ ⑥ → →   ▲ ⑦ ⇔   ▲ ▼ ⇔   ⇔ ・・・ ⇔ ▼...
  • Page 50 ●                                     ・ ・ ・ ・ ・ ・ ・...
  • Page 51 ○○ ○○ ○○ ー ー ー ー ー ー ー ー ー ー ー ー ー ー ー ー ー 〜 ○ ○ ○ ○ ○ ● ●...
  • Page 52 Ω ○○○○ ○ ○ ○ ▲ → → ▼ ▼ ○ ▼  ○ ● ●...

  • Page 53: Installation Of Indoor Unit

    4.2 Installation of indoor unit (a) Ceiling cassete-4 way type (FDT) Selection of installation location for the indoor unit ① Select the suitable areas to install the unit under approval of the user. • Areas where the indoor unit can deliver hot and cold wind sufficiently. Suggest to the user to use a circulator the ceiling height is over 3m to avoid warm air being accumulated on the ceiling. • Areas where there is enough space to install and service. • Areas where it can be drained properly. Areas where drain pipe descending slope can be taken. • Areas where there is no obstruction of airflow on both air return grille and air supply port.
  • Page 54 Set blow-out pattern ¡ Select the most proper number of blow-out air supply port direction from 4 way, 3 way or 2 way according to the shape of the room and installation position. (1 way is not available.) ¡ If it is necessary to change the number of air supply port, prepare the covering materials. (sold as accessory) ¡ Instruct the user not to use low fan speed when 2way or 3way air supply is used. ¡ Do not use 2way air supply port under high temperature and humidity environment. (Otherwise it could cause condensation and leakage of water.) ¡ It is possible to set the airflow direction port by port independently. Refer to tne userís manual for details. (ii) Preparation before installation ① If suspension bolt becomes longer, do reinforcement of earthquake resistant. ⓐ For grid ceiling When suspension bolt length is over 500mm, or the gap between the ceiling and roof is over 700mm, apply earth- quake resistant brace to the bolt.
  • Page 55 (iii) Installation of indoor unit Work procedure × × ① Prepare a ceiling hole with the size of from 860mm 860mm to 910mm 910mm referring to the template attached in the package. × ② Arrange the suspension bolt at the right position (725mm 778mm). ③ Make sure to use four suspension bolts and fix them so as to be able to hold 500N load. ④ Ensure that the lower end of the suspension bolt should be 50mm above the ceiling plane. Temporarily put the four lower nuts 150mm above the ceiling plane and the upper plane. Temporarily put the four lower nuts 150mm above the ceiling plane and the upper nuts on distant place from the lower nuts in order not to obstruct hanging the indoor unit or adjust the indoor unit position, and then hang the indoor unit. ⑤ Adjust the indoor unit position after hanging it by inserting the level gauge attached on the package into the air supply port and checking if the gap between the ceiling plane and the indoor unit is appropriate. In order to adjust the indoor unit position, adjust the lower nuts while the upper nuts are put on distant place. Confirm there is no backlash between the hanger plate for suspension bolt and the lower nut and washer. Suspension bolt Nut (upper) Flat washer Spring wasler Nut (lower) 150mm...

  • Page 56: Work Procedure

    (iv) Refrigerant pipe Caution ¡ Use the new refrigerant pipe. When re-using the existing pipe system for R22 or R407C, pay attention to the following items. • Change the flare nuts with the attached ones (JIS category 2), and reprocess the flare parts. • Do not use thin-walled pipes. ¡ Use phosphorus deoxidized copper alloy seamless pipe (C1220T specified in JIS H3300) for refrigeration pipe installation. In addition, make sure there is no damage both inside and outside of the pipe, and no harmful substances such as sulfur, oxide, dust or a contaminant stuck on the pipes. ¡ Do not use any refrigerant other than R410A. Using other refrigerant except R410A (R22 etc.) may degrade inside refrigeration oil. And air getting into refrigeration circuit may cause over-pressure and resultant it may result in bursting, etc. ¡ Store the copper pipes indoors and seal the both end of them until they are brazed in order to avoid any dust, dirt or water getting into pipe. Otherwise it will cause degradation of refrigeration oil and compressor breakdown, etc. ¡ Use special tools for R410 refrigerant. Work procedure ① Remove the flare nut and blind flanges on the pipe of the indoor unit. ❈ Make sure to loosen the flare nut with holding the nut on pipe side with a spanner and giving torque to the nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them. (Gas may come out at this time, but it is not abnormal.) ¡ Pay attention whether the flare nut pops out. (as the indoor unit is sometimes pressured.) ② Make a flare on liquid pipe and gas pipe, and connect the refrigeration pipes on the indoor unit. ❈...
  • Page 57 (v) Drain pipe Caution ¡ Install the drain pipe according to the installation manual in order to drain properly. Imperfection in draining may cause flood indoors and wetting the household goods, etc. ¡ Do not put the drain pipe directly into the ditch where toxic gas such as sulfur, the other harmful and inflammable gas is generated. Toxic gas would flow into the room and it would cause serious damage to user’s health and safety (some poisoning or deficiency of oxygen). In addition, it may cause corrosion of heat exchanger and bad smell. ¡ Connect the pipe securely to avoid water leakage from the joint. ¡ Insulate the pipe properly to avoid condensation drop. ¡ Check if the water can flow out properly from both the drain outlet on the indoor unit and the end of the drain pipe after installation. ¡ Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/or trap in the midway. In addition, do not put air vent on the drain pipe. Check if water is drained out properly from the pipe during commissioning. Also, keep sufficient space for inspection and maintenance. Work procedure ① Insert the supplied drain hose (the end made of soft PVC) to the step of the drain socket on the indoor unit and fix it securely with the clamp. Attach the hose clamp to the drain hose around 10mm from the end. ¡ Do not apply adhesives on this end. pipe cover (big) Joint for VP-20 (For insulation) Fasten the screw securely (Prepare on site) (Accessory) Hose clamp Drain hose...

  • Page 58: Drain Test

    ④ Insulate the drain pipe. ¡ Be sure to insulate the drain socket and rigid PVC pipe installed indoors otherwise it may cause dew condensation and water leakage. ❈ After drainage test implementation, cover the drain socket part with pipe cover (small size), then use the pipe cover (big size) to cover the pipe cover (small size), clamps and part of the drain hose, and fix and wrap it with tapes to wrap and make joint part gapless. Drain up ¡ The position for drain pipe outlet can be raised up to 700mm above the ceiling. Use elbows for installation to avoid obstacles inside ceiling. If the horizontal drain pipe is too long before vertical pipe, the backflow of water will increase when the unit is stopped, and it may cause overflow of water from the drain pan on the indoor unit. In order to avoid overflow, keep the horizontal pipe length and offset of the pipe within the limit shown in the figure below. 100 or less 295 to 325mm Drain hose Joint for VP-20...
  • Page 59 (vi) Wiring-out position and wiring connection ¡ Electrical installation work must be performed according to the installation manual by an electrical installation service provider qualified by a power provider of the country, and be executed according to the technical standards and other regulations applicable to electrical installation in the country. Be sure to use an exclusive circuit. ¡ Use specified cord, fasten the wiring to the terminal securely, and hold the cord securely in order not to apply unexpected stress on the terminal. ¡ Do not put both power source line and signal line on the same route. It may cause miscommunication and malfunction. ¡ Be sure to do D type earth work. ¡ For the details of electrical wiring work, see attached instruction manual for electrical wiring work. ① Remove a lid of the control box (3 screws) and the wiring cover (2 screws). ② Hold each wiring inside the unit and fasten them to terminal block Power source line Signal line securely. ③ Fix the wiring with clamps. ④...
  • Page 60 (vii) How to check the dirt of drain pan (Maintenance) The method of checking the dirt of drain pan ¡ It is possible to check the dirt for inlet of drain pan without detaching the panel. (Inspection is not possible when the high efficient filter and option spacer is installed.) ① Open the air return grille and remove the panel corner cover on drain pan side. ② Remove the cover of inspection window. (1screw) ③ Check the drain pan from the inspection window. If the drain pan is very dirty, remove the drain pan and clean it. ④ After checking of the dirty of drain pan, restore the cover of the inspection window securely. Improper restoration of the cover may cause dew condensation and water leakage. Available checking part for inlet of drain pan. Panel Cover of Corner c over...
  • Page 61 (b) Ceiling cassete-4 way compact type (FDTC) Selection of installation location 1) Select location where the space above ceiling is larger than those mentioned below and perfect draining can be assured. 2) With the customer’s consent, select a location with following suitable conditions. a) Where cool air or hot air can easily pass through. If the height of the location exceeds 3 m, hot air will gather in the ceiling. Suggest to the customer to also install a circulator. b) Where water can be completely drained. A sloping location for drainage. c) Where there are no wind disturbances to the air return air supply, where the fire alarm will not be set off erroneosly, where no air circulation short circuits occur. d) Where there is no direct sunlight. e) If the humidity above the ceiling exceeds 80% or the condensation temperature above the ceiling exceeds 28˚C, affix polyurethane foam (with a thickness to 10 or greater) above the insulation in the ceiling panels. Carry out tests of the main unit under the above conditions and confirm that there is no failure. However, if the environment where the unit is installed exceeds the above conditions and the unit is operated in high humidity conditions, there is danger of condensate dripping down. If there is a possibility that the unit will be used under such conditions, dress 10 to 20 mm of insulation material on the main unit, piping and drain pipes. 3) Consider the supporting strength of the location. If the strength is not sufficient to sustain the unit weight, use reinforcing materials.
  • Page 62 (iii) Suspension ¡ Please arrange four sets of a suspension bolt (M10 or M8), a nut matching the bolt, a flat washers and a spring washer at the installation site. When suspended from the ceiling 1) This unit is designed for installation on a 2 × 2 grid ceiling. If necessary, please detach the T bar temporarily before you install it. When it is installed on a ceiling other than 2 × 2 grid ceiling, please do not fail to provide an inspection port on the control box side. 2) Determine the positions of suspension bolts (530 × 530). 3) Use four suspension bolts, each fastened in such a manner that it can withstand pull force of 500N. 4) Make suspension bolts to the length that leaves approximately 45mm of them above the ceiling. In hoisting the unit main body in, temporarily fasten the four lower nuts of the suspension bolts approx. 91 mm from the ceiling and the four upper nuts at positions sufficiently far from the lower nuts so that they may not hamper installation work when the unit is hoisted in or the height is adjusted. 5) Put in the unit on an angle. Control box Drainage Suspension Refrigerant piping Ceiling T-bar bolt...

  • Page 63: Drainage Test

    3) Care must be taken so as not to allow an adhesive to run into the drain hose. When it is hardened, it can cause a breakage of a flexible part, if the flexible Over 20mm part receives stress. 4) Use VP-20 general-purpose hard PVC pipes for drain piping. 5) Insert the drain hose supplied as an accessory (soft PVC end) to the stepped part Fasten the screw securely of the unit’s drain socket and then fasten it with the clamp also supplied as an Hose clamp Drain hose Drain socket accessory. Attach the hose clamp to the drain hose around 10mm from the end. Metal plate 6) Adhesive must not be used. 10mm a) Attach a VP-20 joint (to be procured locally) to joint it with the drain hose (hard PVC end) and then attach a VP-20 (to be procured locally) to the joint. Suspension 1.5 m ~ 2 m bolts b) Give the drain piping a descending grade (1/50-1/100) and never create a bump to go over or a trap. c) In connecting drain pipes, care must be taken so as not to apply force to the Insulation Descending slope unit side piping and fix the pipe at a point as close to the unit as possible.
  • Page 64 S Setup from a remote controller side. Drain pump operation from a recomte controller unit is possible. Operate a remote controller unit by following the steps de- scribed below. 1. To start a forced drain pump operation. ① Press the TEST button for three seconds or longer. The display will change from “ SELECT ITEM” “ SET” “ TEST RUN ” ② Press the button once while “ TEST RUN ” is displayed, and cause “DRAIN PUMP ” to be displayed. ③ When the SET button is pressed, a drain pump operation will start. Display: “ DRAIN PUMP RUN” “ STOP” 2. To cancel a drain pump operation. ①...
  • Page 65 7) A panel is hooked on two bolts ( ● mark Ⓐ , Ⓑ ) [Figure 4] [Figure 5] [Figure 4] 8) Please rotate a hook, put in the slot on the panel, and carry out fixing the panel temporarily. [Figure 5] 9) Tighten the two bolts used for fixing the panel temporarily and the other two. 10) Please open the lid of a control box. 11) Like drain pump wiring, please band together by the clamp and put in louver motor wiring into a control box. [Figure 6] 12) Please connect a louver motor connector. [Figure 6] Drain pump connector Louver motor connector Clamp Wire intake Louver motor wiring [Figure 6] 13) Attach two chains to the air return grille with two screws. [Figure 7] Chain [Figure 7] Chain 14) Replace the corner panels. Please also close a chain with a screw together then. 15) Close the air return grille.
  • Page 66 (c) Ceiling cassette-2 way type (FDTW) Selection of installation location 1) This unit is a ceiling surface direct return air and direct supply air type. Install the unit a place the allows air to reach every part of the room, in accordance with the shape and heigh of the room. • Installation space Unit : mm 1,500 1,500 3,000 or more more more more more Note (1) This shows the installation interval dimensions between units. (2) Install the indoor unit at a height or more than 2.5m above the floor. φ 2) This unit permits connecting a branch duct ( 200 mm) according to the method shown in the figure below so that air disribution may be improved to the shape of the room. (For the connecting port of the duct, refer to the exterior dimension) φ200 mm Air interruption 3) Places where cool or heated air circulates freely. When the installation height exceeds 3.0m, warmed air stays close to the ceiling. In such cases, suggest your client users to install air circulators. 4) Places where perfect drainage can be prepared and sufficient drainage gradient is available. 5) Places free from air disturbances to the return air port and supply hole of the indoor unit, places where the fire alarm may not malfunction to short circuit.
  • Page 67 7) Places exposed to oil splashes or steam (e.g. kitchens and machine plants.) Installation and use at such places will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts. 8) Places where corrosive gas (such as sulfurous acid gas) or inflammable gas (thinner, gasoline, etc.) is generated or remains. Installation and use at such places will cause corrosion in the heat exchanger and damage in molded synthetic resin parts. 9) Place adjacent to equipment generating electromagnetic waves or high-frquency waves such as in hospitals. Generated noise may cause malfunctioning of the controller. (ii) Preparations for installation 1) Ceiling hole and suspension bolt positions a) The pattern sheet shrinks or expands as humidity changes, so check the actual size before use. b) The ceiling hole sizes and suspension bolt sizes are shown in the following figure. Ceiling hole size Suspension bolt pitch Control box Center panel Dimension table Unit : mm Mark ₅ ₆ Models 1015 FDTW28, 45, 56 FDTW71, 90 1260 1130 82.5...
  • Page 68 A. If there is a ceiling 1) Open the hole in the installation location to the ceiling open- ing dimensions. Outlet 2) Install the suspension bolts (procured locally) at the designated port locations. Pattern paper (Use care as the center of the spacing for the suspension bolts Ceiling surface Printed surface is not at the center of the panel.) Adjust the position of the indoor unit so that 3) Hang the unit, use the four bolts to mount the pattern the bottom surface of the pattern paper and the bottom surface of the ceiling align. paper provided to the panel mounting section and adjust the height. 4) Use a level or transparent hose with water in it to confirm that the unit is level. If the unit is not level, problems such as water leakage or improper operation of the float switch could occur. 5) After confirming the above, secure the unit in position. Vinyl tube Panel mounting position <Panel mounting position>...
  • Page 69 2) Insert the supplied drain hose (the end made of soft PVC) to the step of the drain socket on the indoor unit and fix it securely with the clamp. Attach the hose clamp to the drain hose around 10mm from the end. ¡ Do not apply adhesives on this end. pipe cover (big) Joint for VP-20 (For insulation) Fasten the screw securely (Prepare on site) (Accessory) Hose clamp Drain hose Drain socket Unit Metal plate 10mm VP-20 Drain hose Drain socket (Prepare on site) (Accessory) The step part Drain hose Connect Clamp...
  • Page 70 Note (1) If the connector remains connected, drain water is discharged from the standard pipe connecting port, leading to water leakage. Clear flexible tubing (optional) Hard vinyl chloride piping. General piping VP-20 Heat insulation Rubber plug Remove CNR (Blue·2P) Natural drain port Control box Drainage test When using the standard drain port, execute a drainage test after completion of electric work. ① During the test run, make sure that drain flows properly through the piping and that no water leaks from connections. ② Be sure to conduct this test even when the unit is installed in the heating season. ③ In case of a new building, conduct the test before it is furnished with the Piping penetration cover ceiling.
  • Page 71 (d) Ceiling cassette-1 way type (FDTS) Preparation of indoor unit It can be installed by either one of the following methods. Select the most adequate method for your particular case. A Standard installation B Higher ceiling 100mm 100mm Ceiling Ceiling or less or less Installation example and limitation Floor Floor Note (1) In the case of installing on the high ceiling, part of indoor unit requires some modification. Procedures of rework Installation on higher ceiling Adhere the insulation materials attached to the direct blow panel on the blow outlet of indoor unit. Blow outlet Insulation materials Selection of installation location...
  • Page 72 6) Where a space as shown below can be secured. Unit : mm 100 or more or more Obstacle Floor 7) It should be avoided where a machine generating high frequency waves is installed. 8) Select a place to branch the piping so that same distance will be a obtained for each of one way piping. 9) If the humidity above the ceiling exceeds 80% or the condensation temperature above the ceiling exceeds 28˚C, affix polyurethane foam (with a thickness to 10 or greater) above the insulation in the ceiling panels. Carry out tests of the main unit under the above conditions and confirm that there is no failure. However, if the environment where the unit is installed exceeds the above conditions and the unit is operated in high humidity conditions, there is danger of condensate dripping down. If there is a possibility that the unit will be used under such conditions, dress 10 to 20 mm of insulation material to the main unit, piping and drain pipes. 10) Where it is convenient for the piping and wiring to the outdoor. 11) Where protected from direct exposure to sun beams. 12) Where it is free from volatile gas generation. (ii) Standard Iocation 1) Installation a) Ceiling hole size and position of suspension bolt Unit : mm (Piping connection side) (Air outlet)

  • Page 73: Installation

    c) Fixing of Suspension bolt. Fix the bolts securely as shown below or by any other adequate means. Hole-in anchor bolt Insert Hole-in plug Concrete Suspension bolt, M10 d) Installation Drain pump box Unit Duct connection opening for blowing through lowered ceiling. Suspension fixture (4 places) Procedures ① Install nuts on the Suspension bolts at onside. Suspension the suspension fixtures on the Suspension bolts first and then insert the remaining fixtures on the remaining Suspension bolts at and lock them with nuts. ② Since the indoor unit and the panel height cannot be adjusted, adjust the height using an attached pattern before fixing the indoor unit. Ceiling board Panel mounting hole Pattern securing Pattern screw (attached) Using the external dimensions shown on the pattern as a guide, cut out an opening on the ceiling board. Detail - Section A...

  • Page 74: Drain Pipe

    Check of levelness Check the levelness as follows. Use a level gauge or adjust the levelness with the following method. Adjust the bottom of indoor unit and the water Piping side level as shown below. Supply water Water level 0~3 mm PVC hose Slightly lower the piping side 2) Drain pipe a) Set the drain pipe as a declining gradient (1/50 ~ 1/100) and avoid to cross an over-hand ridge or to allow a trap on the way. ¡Good piping ¡Improper piping 1.5m~2m Support fixture Crossing...
  • Page 75 f) Air bleed should not be provided in any event. ¡ When it is necessary to raise the drain head, the limitation is up to 600mm below the bottom face of ceiling where the unit is installed. The distance is the dimension of the pipe which is installed perpendicularly from a point close to the output for drain pipe connection. Unit : mm 295~325 Drain hose (accessory) Joints for VP-20 (field procurement) Drain test [Perform this before installing the ornament panel] ¡ Perform this upon completion of electrical work. ¡ Gradually introduce 2,000~3,000cc of water as shown below. Drain piping connection port Pour water into a convex joint If the electrical work has not been completed, connect a convex joint in the drain pipe connection to provide a water inlet. Fill from outlet port Then, check if water leaks from the piping system and that drain flows through the drain pipe normally. ¡ Connect the remote control switch and set to cooling operation. The drain pump will operate with the compressor on. ¡ Test whether or not the water is draining while listening to the operating sounds of the electric motor for the drain water. Indoor unit Check the drainage condition by using the transparent socket.

  • Page 76: Mounting The Panel

    S Setup from a remote controller side. Drain pump operation from a remote controller unit is possible. Operate a remote controller unit by following the steps described below. 1. To start a forced drain pump operation ① Press the TEST button for three seconds or longer. The display will change from “ SELECT ITEM” “ SET” “ TEST RUN ” ② Press the button once while “ TEST RUN ” is displayed, and cause “DRAIN PUMP ” to be displayed. ③ When the SET button is pressed, a drain pump operation will start. Display: “DRAIN PUMP RUN” “ STOP” 2. To cancel a drain pump operation. ① If either SET or ON/OFF button is pressed, a forced drain pump operation will stop. The air conditioning system will become OFF.
  • Page 77 (e) Ceiling cassette-1 way compact type (FDTQ) Avoid the following locations for installation and uses 1) Locations where oil splashes and moisture are abundant (e.g., kitchens, mechanical workshops). These locations may result in corrosion and lower performance of the heat exchanger and cause damage to plastic parts. 2) Locations with corrosive gases (such as sulfurous acid gas), flammable gases (such as thinners, gasoline) and areas where there are possibilities of gas accumulation. These locations can result in corrosion of the heat exchanger and damage plastic parts. Also, the flammable gas could cause a fire. 3) Locations near medical equipment radiating electromagnetic waves in hospitals or other facilities, and around appliances emitting high frequencies. The electromagnetic noise may cause the controller to malfunction.
  • Page 78 (iii) Suspending the unit Use four (4) M10 or W3/8 suspension bolts. Secure them firmly so that each can withstand a pull-out load of 500N. Adjust their length to approximately 40 mm from the ceiling. ¡ For TQ-PSA-15W-E panel ¡ For TQ-PSB-15W-E panel Unit : mm Unit : mm 740(Ceiling opening) 576(Suspension bolts pitch) 576(Suspension bolts pitch) Control Panel Cente Control Panel Cente 1) When hanging from the ceiling a) The panel has two types: for 2 × 2 grid ceiling and for conventional ceiling. ① When installing on a 2 × 2 grid ceiling, put in the unit on an angle, or hang the unit with the T bar temporarily removed. When installing on a conventional ceiling, cut an installation opening (740 mm ×...
  • Page 79 d) Level the unit using a hose filled with water. If the unit is out of level, water leaks or malfunctioning of the floating switch may occur. Supply water Indoor unit PVC hose e) After ensuring the above, secure the unit. 2) When embedded into ceiling a) Install the unit following steps b) and c) of the above part 1). b) When installing on a conventional ceiling, cut an installation opening (740 mm × 600 mm) in the ceiling. c) Check the installation height and level, and after that, secure the unit. (iv) Drain piping 1) Drain piping should always be in a downhill grade (1/50-1/100) and avoid riding across an elevation or making traps. ¡Good piping ¡Improper piping Suspension Avoid riding bolts 1.5 m ~ 2 m across an elevation Air vent Keep free from traps Do not pipe under water.
  • Page 80 5) Be sure to provide heat insulation to hard PVC pipes of indoor placement. 6) Do not ever provide an air vent. 7) The height of the drain head may be elevated up to a point 600mm above the ceiling and, when an obstacle exists in the ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the stretch for the needed height is too high, the back-fiow quantity of drain at the time of interruption of the operation gets too much and it may cause overflow at the drain pan. Therefore, make the height of the drain pipe within the distance given in the drawing below. Unit : mm 295~325 100 or less Drain hose (accessory) Joints for VP-25 (field procurement) 8) Avoid positioning the drain piping outlet at a place where generation of odor may be stimulated. Do not lead the drain piping direct into a sewer from where sulfur gas may generate. (v) Drain test (Perform the drain test after the electrical wiring work has been finished.) ¡...
  • Page 81 S Setup from a remote controller side. Drain pump operation from a remote controller unit is possible. Operate a remote controller unit by following the steps described below. 1. To start a forced drain pump operation ① Press the TEST button for three seconds or longer. The display will change from “ SELECT ITEM” “ SET” “ TEST RUN ” ② Press the button once while “ TEST RUN ” is displayed, and cause “DRAIN PUMP ” to be displayed. ③ When the SET button is pressed, a drain pump operation will start. Display:“DRAIN PUMP RUN” “ STOP” 2. To cancel a drain pump operation. ① If either SET or ON/OFF button is pressed, a forced drain pump operation will stop. The air conditioning system will become OFF.
  • Page 82 (vii) Indoor unit repair procedure for duct connection 1) Drill hole for duct a) While referring to the following dimensions, notch the insulation. (The insulation is equipped with the marks in ad- vance.) b) Cut joints for the hole, and drill hole. c) Connect the duct joint using screws attached to the panel. Unit : mm [Upward] Cut. Outlet d) Connect the bottom plate using screws attached to the panel. Duct joint Bottom plate Control box e) Blower fan tap switch The following two methods are available in switching the blower fan tap. Switch to the high-speed tap with one of these methods. ① By means of function setting from the remote control Function number Function description Setting unit, set the setting ⓒ of “I/U FUNCTION ”...
  • Page 83 2) Duct work a) Calculate air flow volume and the outside static pressure to select the duct’s length and shape, and air supply outlet. Caution Take care that the outside static pressure does not exceed 30 Pa. The unit has condensation owing to the decrease in air capacity, possibly causing the ceiling and household goods to become wet. Indoor unit of air conditioner Keep warm. Seiling Suction surface panel Blow duct Blow outlet (marketed item) b) Reduce the number of bends as much as possible. (Corner R should be as large as possible.) Bad example Bad example Good example c) Connecting the air return duct Outside air intake at the side Outside air intake at the rear d) Outside air intake ¡...
  • Page 84 T bar Ceiling panel ¡ For QR-PNA-14W-ER panel ¡ For QR-PNB-14W-ER panel Ceiling plate Adjust the indoor unit Adjust the indoor unit position so that the bottom position so that the bottom surface of the indoor unit is surface of the indoor unit is T bar on the same level as the on the same level as the ceiling. ceiling's bottom surface. g) Panel installation ① Insert a flat head screw driver, etc. into the slot on the air supply port cover of the panel to remove the cover from the panel. ② Open air return grill. ③ Screw in two of the four suspension bolts attached to the panel, on the piping side and at its opposite angle, by a little less than 5 mm ( ¡...

  • Page 85: Installation Space

    Duct connected-High static pressure type (FDU) Selection of installation location ① Select the suitable areas to install the unit under approval of the user. • Areas where the indoor unit can deliver hot and cold wind sufficiently. Suggest to the user to use a circulator if the ceiling height is over 3m to avoid warm air being accumulated on the ceiling. • Areas where there is enough space to install and service. • Areas where it can be drained properly. Areas where drain pipe descending slope can be taken. • Areas where there is no obstruction of airflow on both air return grille and air supply port. • Areas where fire alarm will not be accidentally activated by the air conditioner. • Areas where the supply air does not short-circuit. • Areas where it is not influenced by draft air. • Areas not exposed to direct sunlight. •...
  • Page 86 (ii) Preparation before installation ① If suspension bolt becomes longer, do reinforcement of earthquake resistant. ⓐ For grid ceiling When suspension bolt length is over 500mm, or the gap between the ceiling and roof is over 700mm, apply earth- quake resistant brace to the bolt. ⓑ In case the unit is hanged directly from the slab and is installed on the ceiling plane which has enough strength. When suspension bolt length is over 1000mm, apply the earthquake resistant brace to the bolt. ② Prepare four (4) sets of suspension bolt, nut and spring washer (M10) on site. Suspension bolt location Suspension bolt (M10) ○  Adhere to the measurements given Unit below for the length of the suspension bolts. Unit: mm Multi type 90, 112, 140 1406 Pipe locations Unit: mm Model: 71 Liquid piping...
  • Page 87 (iii) Installation of indoor unit Installation [Hanging] Hang the unit up. Suspension bolt If the measurements between the unit and the ceiling hole do M10 nut not match upon installation, it Washer for M10 may be adjusted with the long holed installation tool. Unit Spring washer for M10 Adjustment for horizontality Either use a level vial, or adjust the level according to the method below. ○...

  • Page 88: Piping Work

    Bad example of duct work ① If a duct is not provided at the suction side but it is substituted with the space over the ceiling, humidity in the space will increase by the influence of capacity of ventilation fan, strength of wind blowing against the out door air louver, weather (rainy day) and others. a) Moisture in air is likely to condense over the external plates of the unit and to drip on the ceiling. Unit should be operated under the conditions as listed in the above table and within the limitation of wind volume. When the building is a concrete structure, especially immediately after the construction, humidity tends to rise even if the space over the ceiling is not substituted in place of a duct. In such occasion, it is necessary to insulate the entire unit with glass wool (25mm). (Use a wire net or equivalent to hold the glass wool in place.) b) It may run out the allowable limit of unit operation (Example: When outdoor air temperature is 35˚C DB, suction air temperature is 27˚C WB) and it could result in such troubles as compressor overload, etc. c) There is a possibility that the blow air volume may exceed the allowable range of operation due to the capacity of ventilation fan or strength of wind blowing against external air louver so that drainage from be heat exchanger may fall to reach the drain pan but leak outside (Example: drip on to the ceiling) with consequential water leakage in the room. ② If vibration damping is not conducted between the unit and the duct, and between the unit and the slab, vibration will be transmitted to the duct and vibration noise may occur. Also, vibration may be transmitted from the unit to the slab. Vibration damping must be performed. Bad example of duct work Louver to outdoor air For ventilation (v) Refrigerant pipe Caution ① Use the new refrigerant pipe. When re-using the existing pipe system for R22 or R407C, pay attention to the following items. • Change the flare nuts with the attached ones (JIS category 2), and reprocess the flare parts.
  • Page 89 Work procedure ① Remove the flare nut and blind flanges on the pipe of the indoor unit. * Make sure to loosen the flare nut with holding the nut on pipe side with a spanner and giving torque to the nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them. (Gas may come out at this time, but it is not abnormal.) ¡ Pay attention whether the flare nut pops out. (as the indoor unit is sometimes pressured.) ② Make a flare on liquid pipe and gas pipe, and connect the refrigeration pipes on the indoor unit. * Bend the pipe with as big radius as possible and do not bend the pipe repeatedly. In addition, do not twist and crush the pipes. * Do a flare connection as follows: a) Make sure to loosen the flare nut with holding the nut on pipe side with a spanner and giving torque to the nut with another spanner in order to avoid unexpected stress to the copper pipe, and then remove them. b) When fastening the flare nut, align the refrigeration pipe with the center of flare nut, screw the nut for 3-4 times by hand and then tighten it by spanner with the specified torque mentioned in the table below. Make sure to hold the pipe on the indoor unit securely by a spanner when tightening the nut in order to avoid unexpected stress on the copper pipe. ③ Cover the flare connection part of the indoor unit with attached insulation material after a gas leakage inspection, and tighten both ends with attached straps. ¡ Make sure to insulate both gas pipes and liquid pipes completely. * Incomplete insulation may cause dew condensation or water dropping. ④ Refrigerant is charged in the outdoor unit. As for the additional refrigerant charge for the indoor unit and piping, refer to the installation manual attached to the outdoor unit.
  • Page 90 ② Prepare a joint for connecting VP-20 pipe, adhere and connect the joint to the drain hose (the end made of rigid PVC), and adhere and connect VP-20 pipe (prepare on site). * As for drain pipe, apply VP-20 made of rigid PVC which is on the market. a) Make sure that the adhesive will not get into the supplied drain hose. It may cause the flexible part broken after the adhesive is dried up and gets rigid. b) The flexible drain hose is intended to absorb a small difference at installation of the unit or drain pipes. Do not bend or make an excess offset on the drain hose as shown in the picture. Bend or excess offset will cause drain leakage. Over 20mm ③ Make sure to make descending slope of greater than 1/100 and do not make up-down bend and/or trap in the midway. a) Pay attention not to give stress on the pipe on the indoor unit side, and support and fix the pipe as close place to the unit as possible when connecting the drain pipe. b) Do not set up air vent. Supporting metal 1.5m~2m Trapped air will No bump generate noises.
  • Page 91 Procedures ① Supply about 1000 cc of water to the unit through the air outlet by using a feed water pump. ② Check the drain while cooling operation. Insert water supply hose Attached drain hose clamp for 20mm ~ 30mm to supply water. Pour water into a convex joint (Insert hose facing Drain Main toward bottom.) piping unit Drain situation can be checked with transparent socket. Remove grommet If the electrical work has not been completed, connect a convex Make sure to Install it back after test. joint in the drain pipe connection to provide a water inlet. Then, check if water leaks from the piping system and that drain flows through the drain pipe normally. Outline of bottom drain piping work Connecting port of top drain pipe ¡ If the bottom drain piping can be done with a descending gradient (1/50-1/100), it is possible to connect the pipes as shown in the Standard hard polyvinyl drawing below.
  • Page 92 (vii) Wiring-out position and wiring connection ¡ Electrical installation work must be performed according to the installation manual by an electrical installation service provider qualified by a power provider of the country, and be executed according to the technical standards and other regulations applicable to electrical installation in the country. Be sure to use an exclusive circuit. ¡ Use specified cord, fasten the wiring to the terminal securely, and hold the cord securely in order not to apply unexpected stress on the terminal. ¡ Do not put both power source line and signal line on the same route. It may cause miscommunication and malfunction. ¡ Be sure to do D type earth work. ¡ For the details of electrical wiring work, see attached instruction manual for electrical wiring work. ① Remove a lid of the control box (2 screws). ② Hold each wiring inside the unit and fasten them to terminal block securely. ③ Fix the wiring with clamps. ④ Install the removed parts back to original place. Signal side Power source side terminal block terminal block Control box...
  • Page 93 ♦ Model FDU224, 280 (a) Selection of installation location 1) Install the unit at a place as shown below and which meets the conditions as shown by the following table. Unit : mm Service Front view Top view space All Series Plan view If the conditions shown in the left Slab All series Min. 9 00 Min. 900 Inspection Inspection hole hand side cannot be met, the following hole Installation space Min. 400 (900 1730)
  • Page 94 (b) Installation <Packing hardware> <Securing of Hanging Bolt> <Delivery> Four pieces of packing hardware are When delivering the package, move Secure the hanging bolts by either one used. the package to the installation as close of following methods. Discard them after unpacking. as possible. Steel reinforcement When it is unpacked and then moved After removing the hardware, Packing hardware (4 pcs.) to the installation place, sufficient care retighten the screws. Hole-in anchor 150 ~ 160mm Insert Hole-in plug must be taken not to damage the unit (For securing of duct flange) during transfer. <Hanging bolt location> Concrete 1640 Remove...
  • Page 95 <Simplified method for determination of duct dimensions> In the following method, it is assumed that the friction resistance per unit length of duct is 1 Pa/m (0.1 mm Aq/m) and a side of duct is 250 mm. Duct form Square duct Air volume rating is assumed to be FDU280. Item Dimensions volume Air conditioner × /h(m /min) (mm mm) indoor unit 4800 m × W ith air filte r × × × 4800 m Supply × 1200 m (supply air) 1200 m ×...
  • Page 96 (e) Drain Test When the drain piping work is over, inject water to inspect if the piping is arranged properly or not. Remove the side panel and supply gradually 1,000 cc of water to see if water is drained smoothly or not. Check also for water leakage. Duct connected-Middle static pressure type (FDUM) Selection of installation location 1) Avoid installation and use at those places listed below. a) Places exposed to oil splashes or steam (e.g. kitchens and machine plants). Installation and use at such places will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts. b) Places where corrosive gas (such as sulfurous acid gas) or inflammable gas (thinner, gasoline, etc.) is gnerated or remains. Installation and use at such places will cause corrosion in the heat exchanger and damage in molded synthetic resin parts. c) Places adjacent to equipment generating electromagnetic waves or high-frequency waves such as in hospitals. Gener- ated noise may cause malfunctioning of the controller. 2) Select places for installation satisfying the following conditions and, at the same time, obtain the consent on the part of your client user,.
  • Page 97 (ii) Suspension Be sure to observe the finished length of the suspension bolts given below. Unit : mm Mark Models FDUM22, 28, 36, 45, 56 FDUM71, 90 1406 FDUM112, 140 1) Fixing the suspension bolt (customer ordered parts M10) Securely fix the suspension bolt as illustrated below or in another way. Hole in anchor bolt Hole-in plug Insert Concrete Suspension bolt M10 Suspension bolt M10 nuts Suspension bolt M10 M10 Washer Indoor unit Indoor unit M10 Spring washer 2) Adjusting the unit’s levelness a) Adjust the out-levelness using a level vial or by the following method.
  • Page 98 (iii) Duct work ① Supply air duct ¡ 1-spot, 2-spot, 3-spot and 4-spot with Ø200 type duct are the standard specifications. Determine the number of spots based on following table. FDUM22 FDUM28, 36, 45, 56 FDUM71, 90 FDUM112, 140 1-spot 2-spot 2 ~ 3-spot 3 ~ 4-spot Notes (1) Shield the central supply air port for 2-spot. Notes (2) Shield the supply air port around the center for 3-spot. ¡ Limit the difference in length between spots at less than 2:1. ¡ Reduce the length of duct as much as possible. ¡ Reduce the number of bends as much as possible. (Corner R should be as larger as possible.) Bad example Bad example Good example ¡ Use a band, etc. to connect the indoor unit and the supply air duct flange. ¡ Conduct the duct installation work before finshing the ceiling. ② Access door Access door must be provided without fail. ¡ Dimensions of access door and service space ③ Return air port ¡...
  • Page 99 ⑤ Make sure provide an inspection hole on the ceiling. It is indispensable to service electric equipment, motor, func- tional components and cleaning of heat exchanger. Air conditioner indoor unit Ceiling surface Suction duct Blow outlet (marketed item) Suction hole (marketed item) Blowout duct Inspection hole (with air filter) (optional or marketed item) Suction grille Suction grille (Locality) (option) ⑥ If a duct is not provided at the suction side but it is substituted with the space over the ceiling, humidity in the space will increase by the influence of capacity of ventilation fan, strength of wind blowing againat the outdoor air louver, weather (rainy day) and others. ¡ Moisture in air is likely to condense over the external plates of the unit and to drip on the ceiling. Unit should be operated under the conditions as listed in the above table and within the limitation of wind volume. When the building is a concrete strucially immediately after the construction, humidity tends to rise if the space over the ceiling is not substitued in place of a duct. In such occasion, it is necessary to insulate the entire unit with glass wool (25mm). (Use a wire net or equivalent to hold glass wool in place.) ¡...
  • Page 100 ⑦ Return air duct: Use square duct. ⑧ Return air port with canvas duct 1) Connection of intake and exhaust ducts. Looking from top of unit Exhaust por t Side fresh air intake port Intake duct (square duct) Fig.2 Fig.1 Fresh air intake port midway of return duct 2) Duct connecting position. < Fresh air intake > a) Use side air intake port. b) In case of simultaneous intake and exhaust, the side air intake port cannot be used, therefore, take air from the midway air intake port along the intake duct.
  • Page 101 4) When constructing drain piping for several units, position the common pipe about 100 mm below the drain outlet of each unit as shown in the sketch below. Use VP-30 or thicher pipe for this purpose. Secure the elevation as high as possible (approx. 100 mm) A downhill grade of VP30 1/100 or more 5) Be sure to provide heat insulation to hard PVC pipes of indoor placement. 6) Do not ever provide an air vent. 7) The height of the drain head may be elevated up to a point 600 mm from the bottom of unit and, when an obstacle exists in the ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the stretch for the needed height is too high, the back-flow quantity of drain at the time of interruption of the operation gets too much and it may cause overflow at the drain pan. Therfore, make the height of the drain pipe withing the distance given in the drawing below. Unit : mm 295 ~ 325 Drain hose Right above Joints for VP-20 8) Avoid positioning the drain piping outlet at a place where generation of odor may stimulated. Do not lead the drain piping direct into a sewer from where sulfur gas may generate. 9) Drainage test a) During trial operation, make sure that drainage is properly execued and check that leakage is not found at connections. b) Be sure to carry out a drainage test when installing the system during a heating season.
  • Page 102 Forced drain pump operation S Setup from a unit side. ① In case electrical wiring work finished Drain pump can be operated by remote controller (wired). For the operation method, refer to Operation for drain pump in the installation manual for wiring work. ② In case electrical wiring work not finished Drain pump will run continuously when the dip switch “W7-1” on the indoor unit PCB is turned ON, the Connector CNB is disconnected, and then the power supply (230VAC on the terminal block ① and ② ) is turned ON. Make sure to turn OFF “W7-1” and reconnect the Connector CNB after the test. S Setup from a remote controller side. Drain pump operation from a remote controller unit is possible. Operate a remote controller unit by following the steps described below. 1. To start a forced drain pump operation ① Press the TEST button for three seconds or longer. The display will change from “ SELECT ITEM” “ SET” “ TEST RUN ” ②...
  • Page 103 (g) Duct connected (Ultra thin)-Low static pressure type (FDQS) Selection of installation location Rear-intake type with duct Rear-intake 200 or more ceiling-return type Obstacle Under side-intake Model name label ceiling-return type It has stuck on the 1000 or more side of the unit. 100 or more Obstacle 50 or more Bottom plate for inspection Under side-intake type with duct Cover the rear intake at Obstacle Arrange on the installer’s part an the installation site. intake duct fitting with the unit’s Provide a cover plate on An access measuring 350mm × 1300mm is required for servicing,...
  • Page 104 (iii) Moving and installing the unit Adjustment for horizontality Moving Either use a level vial, or adjust the level according to the Move the packed box as close to the installation area as possible. method below. If it must be unpacked, wrap the unit with a nylon sling or apply a support panel and lift it with a rope to avoid damage to the unit. Adjust so the bottom side of the unit will be leveled with the water surface as illustrated below. Installation [Hanging] Pipe side Hang the unit up. Pour water Hanging bolt Water surface M10 nut Washer for M10 0~5 mm Vinyl hose Unit Spring washer for M10 Let the pipe side be slightly sloped. If the measurements between the unit and the ceiling holedo not match If the unit is not leveled, it may cause malfunctions or upon installation, it may be adjusted with the long holed installation tool.
  • Page 105 (v) Refrigerant pipng ① Use the pipes of the following material: seamless phosphorous deoxidized copper Type 1 (C1220T, JISH3300). ② Thoroughly insulate the pipes on the gas and liquid sides. ● On the gas side, the maximum temperature may reach 120 ˚C, so use insulating materials which can withstand this temperature. ③ The refrigerant is filled in the outdoor unit. Only fill the necessary on-site pipes with the refrigerant. ④ The pipes should be bent into a curve with a radius as large as possible. It is not to be bent repeatedly. ⑤ Use two spanners to remove the flare nuts at the end of the pipe. A fter connecting the pipe, use two spanners to tighten it. ⑥ When attaching the flare nuts, apply freezing machine oil over the flare screw area and screw them manually for 3 to 4 turns. ⑦ After checking for any gas leaks, cover the pipe joints with the joint insulating material provided as an accessory, and secure the two ends with clamps. ⑧ The unit has been tested in accordance with JIS dew point conditions to ensure trouble free operations. However, if the unit operates at a high temperature (above the dew point temperature of 23 ˚C), water droplets may fall. In this case, cover the pipes and the drain pipes further with insulating materials of 10-20 mm thickness. ⑨ Do not bend or squash the pipes. ⑩ Do not allow rubbish, swarf or moisture to enter the pipes when conducting plumbing work. Pipe locations Piping Connect the refrigerant pipes as in the illustration below. Unit : mm Liquid pipe (Indoor unit) Remote control wires and Signal wires connection Gas pipe Flare connection Refrigerant gas pipe...
  • Page 106 (c) Prepare a joint for connecting VP-20 pipe, adhere and connect the joint to the drain hose (the end made of rigid PVC), and adhere and connect VP-20 pipe (prepare on site). ❈ As for drain pipe, apply VP-20 made of rigid PVC which is on the market. ¡ Make sure that the adhesive will not get into the supplied drain hose. It may cause the flexible part broken after the adhesive is dried up and gets rigid. ¡ The flexible drain hose is intended to absorb a small difference at installation of the unit or drain pipes. Do not bend or make an excess offset on the drain hose as shown in the picture. Bend or excess offset will cause drain leakage. Over 20mm (d) When constructing drain piping for several units, position the common pope about 100mm below the drain outlet of each unit as shown in the sketch. Use VP-30 (11/4") or thicker pipe for this purpose. (e) Be sure to provide heat insulation to hard PVC pipes of indoor placement. (f) Do not ever provide an air vent. (g) You can elevate the drain outlet up to 600mm from the indoor unit's lower face. When an obstacle exists in the ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the stretch for the needed height is higher than 600mm, the back-flow quantity of drain at the event of interruption of the operation gets too much and it may cause overflow at the drain pan. Therefore, make the height of the drain pipe within the distance given in the sketch below. (h) Avoid positioning the drain piping outlet at a place where generation of odor may be stimulated. Do not lead the drain piping direct into a sewer from where sulfur gas may generate. 290~325mm Right overhead Secure the elevation as high as possible...
  • Page 107 (h) Ceiling suspended type (FDE) Selection of installation location 1) A place where good air circulation and delivery can be obtained. 2) A place where ceiling has enough strength to support the unit. 3) A place where there is no obstruction to the return air inlet and supply air outlet ports. 4) Places exposed to oil splashes or steam (e.g. kitchens and machine plants). Installation and use at such places will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts. 5) A place where the space shown below may be secured. Ceiling mouting installation 4000~5000mm or more Unit : mm 5 or more or more or more Obstacle 6) This unit uses a microcomputer as a control device. Therefore avoid installing the unit near the equipment that generates strong electromagnetic waves and noise.
  • Page 108 (ii) Installation preparation 1) Remove the air return grille. Slide the stoppers (4 places). Filter Take out the pins (4 or 6 places). 2) Remove the side panels. Take out the screws, then slide the side panels in the arrow direction to remove them. Side panel screw (1 each on the left and right sides) (M4) Side panel 3) Remove the suspension lug. Take out the screws, then loosen the installation bolt. Suspension lug screws (M4) Loosening Indoor unit margin 8~12 mm Suspension Lug for...
  • Page 109 (iii) Installation 1) Fasten the suspension lugs to the suspension bolts. <When installed against a ceiling material> <No ceiling material to install against> Air supply Suspension bolts Suspension bolts Lug for suspension Washer Ceiling board Unit Fasten the bolts Washer Unit to the front of the Washer (accessory parts) (accessory parts) slotted holes. *Double nuts *Double nuts Hanging plate *Fasten it securely with double nuts.
  • Page 110 (iv) Refrigerant Piping 1) Piping Position Unit : mm 135 Gas pipe 235 (Liquid pipe) Drain piping (left) Liquid pipe 195 (Gas pipe) Slope inside unit: 10 mm Drain piping (right) 2) Piping Connection Position Piping can be connection from 3 different directions. Remove the cutout from hole where the piping will be connected using side cutters or similar tool. Cut a hole for the piping connection in the back cover according to the cutting margin shown. Cut a hole in the ceiling side in accordance with the position of the piping. Also, after the piping is installed, seal the space around the piping with putty, etc. to keep dust from getting inside the unit. (In order to prevent damage to wires from the edges, be sure to use the back and top covers.) Unit : mm Top Cover Drain piping (For left) Drain piping (For left back) Top cutout Right side cutout Back cover...
  • Page 111 WARNING Use the fitting supplied with the unit to connect the drain hose, fastening it at the lowest point so that there is no slack, and establishing a 10 mm drain slope. * Keep electrical wiring from running beneath the drain hose. Drain hose Drain hose Hose Clamp It can be fastened from inside or outside the unit. Lowest Point Be sure to fasten the drain hose down with a clamp. There is danger of water overflowing the drain hose. Avoidriding across an elevation Keep free from trape Do not pipe under water The drain hose should slope downward. After piping has been installed, check to make sure water drains well and that there is no overflow. (i) Wall mounted type (FDK) Models FDK22~56KXE6 Selection of installation location Select the installation location that meets the following conditions and obtain...
  • Page 112 (ii) Attaching of mounting plate 1) The indoor unit weighs approx, FDK22~56 model : 12kg. Therefore, check whether the portion to install the unit can bear the weight of unit. If it seems to be danger, reinforce the portion by a plate or a beam before installing the unit. It is not allowed to install the unit directly on the wall. Whenever you install the unit, use the attached mounting plate. 2) Find structural members (Intermediate pillar, etc.) suitable for mounting the unit, then install the unit firmly while checking levelness. Unit: mm Leveling Plates (2 places) Level matching mark 3) Adjust the level of mounting plate under the condition that four screws are tightened temporarily. Reference hole 4) Turn the mounting plate around the reference hole to adjust the levelness. WARNING Install the unit where it can bear the weight with sufficient strength margin. In the case of insufficient strength or insufficient installation work, the unit may fall and cause injury.
  • Page 113 b) Procedure for changing drain hose 1. Remove the drain hose. 2. Remove the drain cap. 3. Insert the drain cap. 4. Connect the drain hose. • Pull the drain hose off while • Remove by hand or pliers. • Insert the drain cap which was • Push the end of the drain hose turning the end around. removed in procedure 2 securely onto the fitting while turning using a hexagonal wrench, etc. it around. Note(1) When it is not inserted Note(1) When it is not inserted se- securely, water leakage curely, water leakage may...
  • Page 114 Model FDK71KXE6 Selection of installation location 1) Select the installation location that meets the following conditions and obtain the customer's consent. a) Location where cold and warm air spread all over the room b) Location where piping and wiring to the outdoors can easily be laid down. c) Location where the drain can be discharged completely. d) Location where the wall to mount the unit is rigid. Unit: mm e) Location where there is no wind obstruction to the return air and supply air grills. f) Location not exposed to direct sunshine. g) Avoid the location exposed to oil splash or vapor. or more more h) Avoid the location near to the machine emitting high-frequency radio wave. i) Avoid the location where the receiver of remote control is subject to strong illumination. j) Select the location where the unit can securely be operated by the wireless remote controller referring to the Article “Effective distance of wireless re- mote controller” indicated at the backside.
  • Page 115 (iv) Forming of piping and drain hose 1) Rear take out case a) Forming of piping b) Tape winding • Wind the tape on the portion • Hold the root portion of pip- Piping which passes through the hole on ing, change the direction then the wall. expand and make forming. • Always make taping on the wir- ing which crosses with the piping, Drain hose if any. Note (1) After forming of piping and before tape winding, confirm that the connecting wire is securely fixed to the terminal block. 2) Cautions for left take-out and rear take-out case a) Looking down b) The piping can be taken out from the rear,...

  • Page 116: Floor Standing Installation

    (j) Floor standing (with casing) type (FDFL) Model: All models Selection of installation location 1) A place where good air circulation and delivery can be obtained. 2) Where there is no obstacle around the Air inlet port or Air outlet port. 3) Where a sufficient space can be reserved for the service of air filter and the attachment/removal of panels. 4) Places exposed to oil splashes or steam (e.g. kitchens and machine plants). Installation and use at such places will incur deteriorations in the performance or corrosion with the heat exchanger or damage in molded synthetic resin parts. 5) Where pipes and wires can be arranged conveniently. 6) On the solid floor 7) Where the unit is not exposed directly to sun light.
  • Page 117 (iii) Installation of unit 1) Floor standing installation a) Position of mounting bracket fixing bolts Drill holes by referring to figures below. When fixed on the wall Bolt for wall mounting 4 places Hole for piping & wiring on wall Wall When fixed on the floor Hole for piping & wiring on floor 2 places Note (1) Be sure to use a bolt of the length for wall mouning. b) The methed of drilling the wall is as follows. Wall Wall Indoor Outdoor Sealing plate Sleeve 70~86 mm Sleeve c) Remove the front and side panels.

  • Page 118: Detach The Front Panel

    (iv) Drain piping The drain piping can be directed to the floor or rear sides as follows. (a) Connect a drain piping to the drain outlet and fix it by use of tigghening band. (b) Indoor side drain piping must be thermally insulated. (c) After finishing the drain piping, check the drainage by pouring some water in the drain pan. Up-and-down bend Trap Decrine (v) Installation of remote controller ( on the indoor unit ) When installing the remote controller and selecting the line of remote controller of the unit, refer to the Electric Wiring Instruction Manual provided in the unit and Installation Manual provided for wired remote controller.

  • Page 119: Wiring Route

    4) Wiring route. a) Wire from the wiring hole through the rear side of the control box to the terminal block. b) Any suplus wires should be tied up with a cable tie. Remote controller installation section Cable tip Control box Front Side (k) Floor standing (without casing) hidden type (FDFU) Model: All models Selection of installation hidden location 1) A place where good air circulation and delivery can be obtained. 2) Where there is no obstacle around the Air inlet port or Air outlet port. 3) Where a sufficient space can be reserved for the service of air filter and the attachment/removal of panels.
  • Page 120 (ii) Bolt positions 1) Bolt positions for metal settings used for floor fixation. 2) B olt positions for wall fixation Unit : mm • Metal fitting used for floor fixation (accessories). 1150(1435) Unit : mm 786 (1071) Bolt positions for floor mounting hardware Floor mounting hardware Accessory Front 10 x 30 elongated hole Use M8 Back 806(1091) Elongated hole for Screw for adjusting As viewed from floor side. levelness. wall mounting Note (1) Value in ( ) indicates 71 type. 4 - 12 × 24 Use M10 (iii) Installation of unit 1) Floor standing installation a) Position of mounting bracket fixing bolts...
  • Page 121 (iv) Drain piping The drain piping can be directed to the floor or rear sides as follows. (a) Connect a drain piping to the drain outlet and fix it by use of tigghening band. (b) Indoor side drain piping must be thermally insulated. (c) After finishing the drain piping, check the drainage by pouring some water in the drain pan. Up-and-down bend Trap Decrine...
  • Page 122 (l)1 Duct connected-compactand Flexible type (FDUH) ① ③ ● ●  ○ ○ ○ （ ） （ ） （ ） （ ） φ φ （ ） （ ） φ （ ） φ （ ） （ ） （ ） ② ①  φ  ・...
  • Page 123 ④ ⑤ ⑦ ●  ●  ●  ●  ① ● ●  ●  ● ● ●   ●  ⑤ ● ⑥ ●    ・  ・ ● ①●   　　 ● 　　   ● ● ● ● ② ● ③ ● ● ※  ●...
  • Page 124 ⑦ ⑧ ●  ●  ， ●  ●  ●  ●  ●  ●  ●  ●  ●    ●   ● ● ①  ● ② ○ ○ ●  ※  ⑨ ●  ● ●  ● ...

  • Page 125: Installation Of Wired Remote Controller

    ② I nstall the lower case to the flat wall with attached 4.3 Installation of wired remote controller two wooden screws. (1) Selection of installation location Avoid the following locations Upper (a) Direct sunlight. (b) Close to heating device. (c) Highly humid or water splashing area. Lower case (d) Uneven surface. (2) Installation procedure Lower (a) O pen the cover of remote controller , and remove the screw under the buttons without fail. ③ C onnect the remote controller cord to the terminal block. Connect the terminal of remote controller (X,Y) with the terminal of indoor unit (X,Y). (X...
  • Page 126 4.4 Setting function with the wired remote controller (a) The functional setting. • The initial function setting for typical using is performed automatically by the indoor unit connected, when remote controller and indoor unit are connected. As long as they are used in a typical manner, there wiil be no need to change the initial settings. If you would like to change the initial setting marked “...
  • Page 127 (i) Remote controller function Stop air-conditioner and press “ ” : Initial settings (SET) + (MODE) buttons at the same time for over three seconds. “ ” : Automatic criterion Function When you use at 50Hz area setting When you use at 50Hz area When you use at 60Hz area Automatical operation is impossible Temperature setting button is not working...
  • Page 128 (ii) Indoor unit function Stop air-conditioner and press “ ” : Initial settings (SET) + (MODE) buttons “ ” : Automatic criterion at the same time for over three seconds. Indoor unit No. are indicated only when Note1: Fan setting of "HIGH SPEED" plural indoor units are connected.
  • Page 129 (b) How to set function Operation message Function description: Function No. setting description: Stop air-conditioner and press (SET) (MODE) buttons at the same time for over three seconds, and the Fixing button "FUNCTION SET " will be displayed. Finishing button Press ( SET) button.
  • Page 130 (c) The range of temperature setting. When shipped, the range of set temperature differs depending on the operation mode as below. Heating : 16~30˚C (55~86˚F) Except heating (cooling, fan, dry, automatic) : 18~30˚C (62~86˚F) 1) Upper limit and lower limit of set temperature can be changed with remote controller. Upper limit setting: valid during heating operation.
  • Page 131 g) When "LOWER LIMIT " is selected (valid during cooling, dry, fan, automatic) ① Indication: SET UP LOWER 18˚C " ② Select the upper limit value with temperature setting button . Indication example: "LOWER 24˚C " (blinking) ③ Press (SET) button to fix. Indication example: "LOWER 24˚C" (Displayed for two seconds) After the fixed upper limit value displayed for two seconds, the indication will return to "LOWER LIMIT ".
  • Page 132 (e) How to set the airflow direction (Only FDT, FDTC, FDE) (i) FDT, FDTC series It is possible to change the movable range of the louver on the air outlet from the wired remote controller. Once the top and bottom position is set, the louver will swing within the range between the top and the bottom when swing operation is chosen. It is also possible to apply different setting to each louver.
  • Page 133 7) Press SET button. (Fixing of the upperlimit position) The upper limit position is fixed and the setting position is displayed for two seconds.Then proceed to lower limit posi- tion selection display. [EXAMPLE] (displayed for two seconds) (shows current setting) 8) Press button.
  • Page 134 When plural remote controllers are connected, louver setting operation cannot be set by slave remote controller. If it is necessary to fix the louver position manually, follow the procedure mentioned below. ① Shut off the main power switch. ② Unplug the connector of the louver motor which you want to fix the position. Make sure to insulate unplugged connec- tors electrically with a vinyl tape.
  • Page 135 (ii) FDE series It is possible to change the movable range of the louver on the air outlet from the wired remote controller. Once the top and bottom position is set, the louver will swing within the range between the top and the bottom when swing operation is chosen. It is also possible to apply different setting to each louver.
  • Page 136 7) Press SET button. (Fixing of the upperlimit position) The upper limit position is fixed and the setting position is displayed for two seconds.Then proceed to lower limit posi- tion selection display. [EXAMPLE] (displayed for two seconds) (shows current setting) 8) Press button.
  • Page 137 4.5 Notabillia as a unit designed for R410A (a) Do not use any refrigerant other than R410A. R410A will rise to pressure about 1.6 times higher than that of a conventional refrigerant. (b) A unit designed for R410A has adopted a different size indoor unit operation valve charge port and a different size check joint provided in the unit to prevent the charging of a wrong refrigerant by mistake.

  • Page 138: Outline Of Operation Control By Microcomputer

    5. OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER 5-1 Wired remote controller (Optional parts) The figure below shows the remote controller with the cover opened. Note that all the items that may be displayed in the liquid crystal display area are shown in the figure for the sake of explanation. Characters displayed with dots in the liquid crystal display area are abbreviated.

  • Page 139: Operation Control Function By The Indoor Controller

    5-2 Operation control function by the indoor controller Operations of functional items during cooling/heating Cooling Heating Operation Dehumidify Thermostat Thermostat Thermostat Thermostat Hot start (Defrost) Functional item Compressor � � � � � � �/� 4-way valve � � � �...

  • Page 140: Remote Controller Display During The Operation Stop

    Remote controller display during the operation stop “Centralized control ON” is displayed always on the LCD under the “Center/Remote” and “Center” modes during the operation stop (Power ON). This is not displayed under the “Remote” mode. (b) If this display is not shown under the “Center/Remote” mode, check if the indoor unit power switch is turned on or not. Hot start (Prevention of cold draft during heating) At the startup of heating operation, at resetting the thermostat, during defrosting operation and at returning to heating, the indoor fan is controlled by the indoor heat exchanger temperature (detected with Th...
  • Page 141 Filter sign As the operation time (when ON/OFF switch is at ON) accumulates to 180 hours (1), “Filter cleaning” is displayed on the remote controller. (This is also displayed when the unit is in trouble and under the centralized control, regardless of ON/OFF) Note (1) Time setting for the filter sign can be made as shown below using the indoor function of wired remote controller “Filter sign setting”.

  • Page 142: Operation Check/Drain Pump Test Run Operation Mode

    (11) Drain motor (DM) control [Applicable type: FDT, FDTC, FDTW, FDTS FDR, FDUM, FDQS and FDU90～140] Drain motor (DM) start operation at the same time when compressor ON at cooling and dehumidifying mode and keeps operating for 5 minutes after operation stop, the anomalous stop, thermostat OFF and switching from cooling or dehumidifying operation to fan or heating operation.

  • Page 143: Hot Start

    (14) Anomalous fan motor (FDT and FDK only) Fan motor will be stopped with displaying “E16”, if it has detected the revolutions of 200 rpm or less continuously for 30 seconds at a rate of 4 times within 60 minutes, after starting the motor. (15) High ceiling control [Applicable type: FDT, FDTC, FDTW, FDTS, FDE and FDR] When the indoor unit is installed at a high ceiling, the airflow volume mode control can be changed with the indoor function of wired remote controller “High ceiling setting”.
  • Page 144 • Heating output: Outputs DC12V relay drive signal during heating operation. • Compressor ON output: Outputs DC12V relay drive signal when the compressor is operating. • Error output: When any anomalous condition occurs, it outputs DC12V relay drive signal. (b) Remote operation input Remote operation inputs (switch input, timer input) connectors (CnT) are provided on the indoor control PCB.

  • Page 145: Operation Control Function By The Remote Controller

    5.3 Operation control function by the remote controller Switching sequence of the operation mode switches of remote controller Dehumidifying Cooling Heating [CPU reset] When the “CHECK” and “GRILL” buttons on the remote controller are pressed at the same time, this function is activated. This function is same as power supply reset.

  • Page 146: Operation Control Function By The Outdoor Controller

    5.4 Operation control function by the outdoor controller Normal control Operation of major functional components under each operation mode Heating Operation mode Cooling/Dehumidifying Thermostat Thermostat Thermostat Thermostat Defrost Fonctional item 〇 × × 〇 × 〇 Compressor (CM) 〇 〇 ×/〇...
  • Page 147 (2) 　 Pre-compressor start control (a)　Remote controller full stop → Operation (i) 　 Start conditions • When it has changed from the state that the compressor is stopped to the compressor operation frequency command > 0 Hz. (ii) 　 Control contents •...
  • Page 148 (b)　Cooling → Heating (i) 　 Start conditions • When it has changed from the cooling operation in the outdoor unit operation mode to the heating in the outdoor unit operation mode (ii) 　 Control contents When the compressor is operating, the compressor is stopped. Each functional component operates according to the sequence shown below.
  • Page 149 (c)　Heating → Cooling (i) 　 Start conditions • When it has changed from the heating operation in the outdoor unit operation mode to the cooling in the outdoor unit operation mode (ii) 　 Control contents When the compressor is operating, the compressor is stopped. Each functional component operates according to the sequence shown below.
  • Page 150 (3)　Compressor control (a)　Compressor 4-way valve switching assurance When the compressor is started under the following conditions, it is started with the 4-way valve switching assurance. (i) 　 It increases from the pre-compressor start control 10 Hz (synchronized operation). (ii) 　 Compressor operation frequency command will be as follows. 4-way valve switching assurance/Target compressor speed Item Model...
  • Page 151 < End conditions > When either one of following conditions is established a) 　 When the frequency upper limit increase by this control continued for 15 minutes in total When the inverter has stopped within 15 minutes after the start and is started again, it starts with the normal protection start and increases the frequency upper limit at a rate of 5 Hz/minute till the frequency increase continues for 15 minutes in total.
  • Page 152 (4)　Outdoor fan control (a)　Control contents of fan tap and fan speed The 7th outdoor unit fan speed in the following table is specified as the rated speed. Under the normal control, the speeds up to 8th level (800 rpm) are used. Fan speed (cooling) Fan speed (Heating) Outdoor fan tap...
  • Page 153 (c)　Low outdoor air temperature outdoor unit fan cooling control (i) 　 Start conditions This control is performed when all of following conditions is established. ➀ When the ordinary outdoor unit fan control is performed ➁ Outdoor air temperature ≦ 10ºC (It is reset with the hysteresis of the outdoor air temperature > 15ºC.) Valid Invalid Outdoor air temperature...
  • Page 154 (5) 　 Defrost (Defrost control) (a)　Temperature condition of defrosting 1) 　 S tart conditions (Standard specification or cold region specification can be selected by switching the jumper wire J15.) Defrost operation will start, when outdoor unit whose compressor is operating under heating mode has satisfied all the following conditions.

  • Page 155: Compressor Capacity Control

    (6)　Protective control (a)　Discharge pipe temperature (Td) control Discharge pipe temperature sensor (Tho-D1) monitors the discharge pipe temperature (Td) to avoid the temperature rise on the discharge pipe. 1)　Compressor capacity control (i) 　 Start conditions When all of following conditions has been established ➀...
  • Page 156 (II)　Optional controls • Functions of outdoor PCB connectors CNZ1 By changing the allocation of extemal input functions (P07-19) on the 7-segment, functions of extemal input terminals may be selected. Inputting signals to extemal input terminals enable the following functions. Setting value for aliocation of extemal input function With external input terminals short circuited With external input terminals open “0”...
  • Page 157 (1) External input and demand input (a) Operation permission and prohibition modes (Note) With 7-segment display [P07]-[0] Operation permission or operation prohibition mode is switched with the connector (CnS1) and the jumper wire (J13) on the outdoor PCB. J13: Switching of CnS1 input method J13 short-circuited: CNS1 is for the level input. J13 open: CnS1 is for the pulse input.
  • Page 158 Operation/ stop control by the demand input CnS1 of outdoor unit CnS1: Switching of demand control/ Input: CnS1 Switching with J13 normal operation Short-circuit Demand control Short-circuit (Level input)  Normal operation Switching of normal operation/ Open (Pulse input) Open demand control (Reversal) Short-circuit Normal operation...
  • Page 159 (2)　Silent mode control (a)　Start conditions When all of the following conditions is established (i) 　 At the start of silent mode initiated by the indoor unit or when the silent mode input is made effective (short-circuited) at the external input terminal (Factory default: CnG2) on the outdoor unit (ii) 　...

  • Page 160: External Output

    (3) Outdoor fan snow protection control (a) This control is enabled/disabled by entering data into 7-segment display. (b) Outdoor fan control switching operation [Starting conditions] When following conditions are established for 10 minutes continuously. Snow protection control setting is valid ([P02]=1) and ambient air temperature < 3°C or external input of outdoor fan snow protection control ON. ([P07]=5 and CnS1 is shorted) Set the Code No.
  • Page 161 (5) Energy saving mode control This control is effective, when [P04] of 7-segment display is set 000, 040, 060, 080 (except OFF) (a) Control contents Compressor upper limit speed is changed according to the setting ratio. (ii) Compressor upper limit speed is obtained by multiplying the rating speed (at cooling/heating) with the setting ratio as follows.
  • Page 162 (8) Pump down operation control at removal of unit When an outdoor unit is discarded or removed, the pump down control is performed at the outdoor unit side in order to recover the refrigerant quickly to the outdoor unit. (a) Start conditions This is implemented with the liquid service valve closed. Outdoor unit operation mode –...
  • Page 163 (C) Data output (1) 7-segment and operation data retention (a) 7-segment display Operation information is displayed for checking various operation data during test run and for helping malfunction diagnosis at servising. Input data to microcomputer, contents of outdoor unit control, indoor unit registration information, or other, are mainly displayed on the 7-segment LED. Operation information display Displays each item at 7-segment of 3-digit ×...
  • Page 164 (iii) Precedence of display [Exx] > [Related to check operation ([CHJ] > [CHU])] > [PdE] > [PdS]> [oPx] > [Cxx] ➀ If resetting from the display of ➀ , it is switched to [C00]. ➁ If SW8 or SW9 is pressed during the display of ➀ , it changes to [C00]. ➂...
  • Page 165 (b) List of 7-segment displays Code Contents of display Data display range Minimum unit Remarks Error [Exx] display Caution [oPx] display Special [PdS][PdE] display Code Contents of data display Data display range Minimum unit Remarks <Sensor value, actuator information> CM1 operation frequency 0 ~ 130 (Spare) Tho-A Ambient air temperature L,-20 ~ 43...
  • Page 166 Code Minimum Contents of data display Data display range Remarks unit Order of 100: CNG2 C32 External input – Order of 10: (Spare) (0: Close, 1: Open) Order of 1: (Spare) Order of 100: 52C-1 C33 Relay output – Order of 10: 20S (0: Close, 1: Open) Order of 1: Crankcase heater 1 Order of 100: SV6...
  • Page 167 Code Minimum Contents of data display Data display range Remarks unit <Anomalous counter information> C70 Counter · Sensor wire disconnected 0 ~ 3 C71 Counter · High pressure protection 0 ~ 5 Counter · Anomalous low pressure ➂ (During 0 ~ 5 operation) C73 Counter ·...
  • Page 168 Code Minimum Contents of data display Data display range Remarks unit <User setting> P00 (Spare) – – – – – 0: First push priority (at shipping) P01 Operation priority selection – 1: Last push priorit Outdoor unit fan snow protection 0: Control disabled (at shipping) –...
  • Page 169 Code Min. Data display contents Data display range Remarks unit <Service engineer setting> – – – – – – – P16 (Spare) – – – – – – – P17 (Spare) – – – – – – – P18 (Spare) Heating blowout temperature 0 : (Factory default) 0: Heating blowout temperature security invalid...
  • Page 170 (c) Saving of Operation Data Mainly for investigating causes of market claims, operation data are always saved in memory. If any trouble occurs, the data writing is stopped and only the operation data prior to the time when the trouble occurs are recorded. These data can be loaded to a PC via RS232C connector of PCB and utilized for identifying causes.

  • Page 171: Tho-P1

    Code Record data Number of Write contents Unit of write Contents Data write range bytes 00: No error on outdoor unit Error code 00 ~ 99 – 01-99: All errors 00 – 3F: Outdoor Error existing unit address 00 ~ FF –...
  • Page 172 Code Record data Unit of Number of Write contents Contents Data write range write bytes FMo1 Fan speed command 0 ~ 65535 10min-1 FMo2 Fan speed command 0 ~ 65535 10min-1 EEVH1 opening degree 0 ~ 65535 1 pulse EEVSC opening degree 0 ~ 65535 1 pulse Compressor target cooling low...
  • Page 173 Code Record data Unit of Number of Write contents Contents Data write range write bytes Dip SW [SW6] – – Bit0 SW6-1 0 : OFF, 1 : ON Bit1 SW6-2 0 : OFF, 1 : ON Bit2 SW6-3 0 : OFF, 1 : ON Bit3 SW6-4 0 : OFF, 1 : ON...
  • Page 174 Code Record data Unit of Number of Write contents Contents Data write range write bytes <Error counter information> Control status HP (63H1) anomaly counter 0 ~ 5 Control status LP anomaly counter while 0 ~ 5 running Control status LP anomaly counter while 0 ~ 5 stopping 75 Control status Td1 error counter...
  • Page 175 Code Record data Unit of Number Write contents Contents Data write range write of bytes Heating setting 2 (Target high 0.05 3.15 ~ 2.75 pressure) [MPa] Heating setting 3 (Judgment 30 ~ 38 1 [°C] temperature) State of pipe washing operation on –...
  • Page 176 (2) Outdoor PCB setting Code Input Remarks Outdoor address No. (Order of 10) Outdoor address No. (Order of 1) Normal ★ /Reseet SW3-1 Inspection LED reset None ★ /With SW3-2 Auto backup operation Normal ★ /Operation SW3-6 Pipe washing operation Normal ★ /Forced heating-cooling SW3-7 Forced heating/cooling Normal ★...

  • Page 177: System Troubleshooting Procedure

    SYSTEM TROUBLESHOOTING PROCEDURE 6.1 Basics of troubleshooting Basic troubleshooting is to check/analyze/save data by connecting the Mente PC. Whenever arriving at the site, always connect the Mente PC before starting work. Method of error data analysis (Basic procedure) • Identify whether particular error occurred during operation or stopping. •...

  • Page 178: Explanation Of Troubleshooting

    6.2 Explanation of troubleshooting (a) Checking 15V on the control PCB (Step to check if the inverter PCB fails or not) Use this to diagnose E41, E42, E45 and E48. Fan motor check Power OFF (Power supply circuit breaker OFF) *Be sure to check both fan motor 1 and 2 Be sure to wait for 3 minutes after turning the Even if DC15V is detected, affection by fan motor anomaly is...

  • Page 179: Contents Of Troubleshooting

    6.3 Contents of troubleshooting (a) List of inspection displays Indoor and outdoor units Remote 7-segment controller Name of inspection Classification Page display error code – Remote controller communication error Communication error – Duplicated indoor unit address Address setting error – Outdoor unit signal line error Address pairing setting error 195, 196 –...

  • Page 180: Applicable Model

    (b) Troubleshooting Green Error code Content Keeps flashing Stays Off None Indoor Operates but does not cool Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check the indoor fan operation Check the temperature difference between return and suction air of indoor unit It is normal...

  • Page 181: Operates But Does Not Heat

    Green Content Error code Keeps flashing Stays Off None Indoor Operates but does not heat Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Check the indoor fan operation Check the temperature difference between return and suction air of indoor unit It is normal (This unit is designed...

  • Page 182: Earth Leakage Breaker Activated

    Green Content Error code Stays Off Stays Off None Indoor Earth leakage breaker activated Remote controller: 7-segment display: Stays Off Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Are the insulation resistance Replace compressor. * and and coil resistance of compressor OK? 2.

  • Page 183: Excessive Noise/Vibration

    Green Content Error code – – None Indoor Excessive noise/vibration (1/3) Remote controller: 7-segment display: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure If excessive noise/vibration persists when sufficient time has elapsed after Does noise/ vibration occur during stopping the unit, it is or soon after stopping considered that the air-...
  • Page 184 Green Content Error code – – None Indoor Excessive noise/vibration (2/3) Remote controller: 7-segment display: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From 1/3 Rearrange the piping to Are the pipes avoid contact with the contacting with the casing.

  • Page 185: All Models

    Green Content Error code – – None Indoor Excessive noise/vibration (3/3) Remote controller: 7-segment display: – – Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure From 2/3 If insufficient cooling/ [Adjustment heating problem happens during commissioning] due to anomalous operating Does noise/vibration occur when the conditions at cooling cooling/heating operation is...
  • Page 186 Green Content Error code Keeps flashing Stays Off None Indoor Louver motor anomaly Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure ▲Check at the indoor unit side. Operate after waiting for more than 1 minute. Does the louver operate when power on?
  • Page 187 Green Power supply system anomaly Content Error code Stays Off Stays Off None Indoor Remote controller: (Power supply to indoor unit PCB) 7-segment display: Stays Off 2 times flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure AC 220-240V/220V detected between L-N on the indoor terminal block?

  • Page 188: Power Supply System Error (Power Supply To Remote Controller)

    Green Content Error code Power supply system error Stays Off Keeps lighting None Indoor Remote controller: (Power supply to remote controller) 7-segment display: Stays Off Keeps lighting Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Isn't there any Correct it.

  • Page 189: Error Detection Method

    Green Content Error code WAIT Indoor Keeps flashing Stays Off Remote controller: WAIT 7-segment display: Outdoor Keeps flashing Keeps flashing 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that is kept WAIT on displaying on the remote controller for more than 2 is kept on WAIT...
  • Page 190 Green Content Error code Keeps flashing Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case of fuse blown, how to check the unit before replacement of fuse) Isn't there any short circuit...
  • Page 191 Green Content Error code Keeps flashing Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (No display on the remote controller after power ON) No display on the remote controller after power ON Does indoor green LED keep...
  • Page 192 Green Content Error code Keeps flashing Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Keeps flashing Keeps flashing Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that is kept WAIT on displaying on the remote controller for more than 2 is kept on WAIT...
  • Page 193 Green Content Error code Stays OFF Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Stays OFF Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case that LED on outdoor control PCB stays OFF) In case that LED on outdoor control PCB stays Once turn OFF the breaker and turn ON it again at 3...
  • Page 194 Green Content Error code Stays Off Stays Off Indoor Remote controller: WAIT WAIT 7-segment display: Stays Off Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (In case of fuse blown, how to check the unit before replacement of fuse) Isn't there any short circuit...
  • Page 195 Green Content Error code Stays OFF Stays Off 〔 No display 〕 Indoor Remote controller: [No display] 7-segment display: Stays OFF Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure (No display on the remote controller after power ON) No display on the remote controller after power ON Is DC10V...

  • Page 196: Remote Controller Communication Error

    Green Content Error code Remote controller Keeps flashing Stays Off Indoor Remote controller: communication error 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is it possible to Malfunction by temporary reset normally by the power noise.
  • Page 197 Green Content Error code Keeps flashing Keeps flashing Indoor Duplicated indoor unit address Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Is the number of Review number of connected indoor units up connected units.
  • Page 198 Green Content Error code Keeps flashing 2 times flash E3/5 Indoor Outdoor unit signal line error Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E3 is a communication error that occurs when communication between indoor and outdoor units is not established at all.

  • Page 199: Communication Error During Operation

    Green Content Error code Keeps flashing *See below Indoor Communication error during operation Remote controller: 7-segment display: Keeps flashing 2 time flash Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure * In case that indoor red LED flashes 2 times Note (1) Check the connection (disconnection, looseness) of signal wires at outdoor terminal block Is the...

  • Page 200: Is Detected For 20 Seconds

    Green Indoor heat exchanger Content Error code Keeps flashing 1 time flash Indoor Remote controller: temperature thermistor anomaly (Thi-R) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Insert the connector the connector of thermistor connected securely properly ?
  • Page 201 Green Indoor return air Content Error code Keeps flashing 1 time flash Indoor Remote controller: temperature thermistor anomaly (Thi-A) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector thermistor connected securely properly ?

  • Page 202: Drain Trouble

    Green Error code Content Keeps flashing 1 time flash Indoor Drain trouble Remote controller: 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model FDT, FDTC, FDTW, FDTQ, Diagnosis Countermeasure FDTS, FDR, FDU, FDUM, and FDQS series Check the error data in the remote controller. Is there any overflow? Is DC 12V detected at CN1...
  • Page 203 Green Error code Content Excessive number of indoor units (moe than 17 units) Keeps flashing Stays Off Indoor Remote controller: by controlling one remoto controller 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Aren't more than 17 indoor units...
  • Page 204 Green Error code Content Address setting error Keeps flashing Keeps flashing Indoor Remote controller: by mixed setting method 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure Isn't the automatic setting and manual setting mixed in the address Review address setting.
  • Page 205 Green Content Error code Indoor fan motor anomaly Keeps flashing 1 time flash Indoor Remote controller: (FDT series) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model FDT series only Diagnosis Countermeasure Does any foreign matter intervene Remove foreign matter.
  • Page 206 Green Error code Content Indoor fan motor anomaly Keeps flashing 1 time flash Indoor Remote controller: (FDK series) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model FDK series only Diagnosis Countermeasure Does any foreign matter intervene Remove foreign matter.
  • Page 207 Green Content Error code Indoor unit operation check, Keeps flashing 1 time flash Indoor Remote controller: drain motor check mode anomaly 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure E19 occurs when the power ON Is SW7-1 Indoor control PCB...
  • Page 208 Green Error code Content Remote controller Keeps flashing Stays Off Indoor Remote controller: temperature thermistor anomaly (Thc) 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model All models Diagnosis Countermeasure the connector of Insert the connector thermistor connected securely properly ? Regarding the characteristics of the thermistor,...
  • Page 209 Green Error code Content Unmatch connection of Keeps flashing Stays Off Indoor Remote controller: indoor and outdoor unit 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Is the wiring connection between Correct the wiring indoor and outdoor units correctly?
  • Page 210 Green Error code Content Keeps flashing Stays Off Indoor Duplicated outdoor unit address No. Remote controller: 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition. Check the conditions whether it occurs immediately after the power...
  • Page 211 Green Content Error code Open L3 Phase on Keeps flashing Stays Off Indoor Remote controller: power supply at primary side 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.
  • Page 212 Green Discharge pipe temperature Error code Content Keeps flashing Stays Off Indoor Remote controller: error (Tho-D1) E36-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition Save data for 30 minutes before stopping in Mente PC Check the ROM version...
  • Page 213 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Liqiud flooding anomaly E36-3 7-segment display: Keeps flashing 3 times flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor units Diagnosis Countermeasure Check and save the data of Save data for 30 minutes before stopping in Mente PC operating condition Check the ROM version Are there...
  • Page 214 Outdoor heat exchanger Green Error code Content temperature termistor (Tho-R) and subcooling coil Keeps flashing Stays Off Indoor Remote controller: temperature thermistor (Tho-SC,-H) anomaly E37-1, 2, 5, 6*1 7-segment display: Keeps flashing Outdoor *1 E37-1: one time flash (Tho-R1), E37-2: 2 time flash (Tho-R2), E37-5: 5 time flash (Tho-SC), E37-6: 6 time flash (Tho-H) 5.

  • Page 215: Continuously Within 10 Minutes

    Green Outdoor air temperature Content Error code Keeps flashing Stays Off Indoor Remote controller: thermistor anomaly (Tho-A) 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.
  • Page 216 Green Error code Content Discharge pipe temperature Keeps flashing Stays Off Indoor Remote controller: thermistor anomaly (Tho-D1) E39-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.
  • Page 217 Green High pressure anomaly Content Error code Keeps flashing Stays Off Indoor Remote controller: (63H1-1activated) 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition Save data for 30 minutes before stopping in Mente PC Check the sensed value of high pressure sensor when the...
  • Page 218 Green Error code Content Keeps flashing Stays Off Indoor E41(E51) Remote controller: Power transistor overheat E41(E51)-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Check the temperature of Save data for 30 minutes before stopping in Mente PC power transistor...
  • Page 219 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Current cut (CM1) E42-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check pressure anomaly Check the operation of...
  • Page 220 Green Error code Content Excessive number of indoor units connected, Keeps flashing Stays Off Indoor Remote controller: excessive total capacity of connection E43-1, 2 *1 7-segment display: Keeps flashing Outdoor *1 E43-1:1 time flash (Excessive number of indoor units connected), E43-2:2 time flash (Excessive capacity of indoor units connection) 5.
  • Page 221 Green Content Error code Communication error between Keeps flashing Stays Off Indoor Remote controller: inverter PCB and outdoor control PCB E45-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Is 15V...
  • Page 222 Green Error code Content Mixed address setting methods Keeps flashing Stays Off Indoor Remote controller: coexistent in same network. 7-segment display: Keeps flashing Stays Off Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check the address setting...
  • Page 223 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Outdoor DC fan motor anomaly E48-1, 2 *1 7-segment display: Keeps flashing Outdoor *1 E48-1: 1 time flash (FMO1), E48-2 : 2 time flash (FMO2) Inspect also the fan motor 2 even if it is E48-1. 5.
  • Page 224 Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Low pressure anomaly 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check error status.

  • Page 225: Automatically After 3-Minutes

    Green Content Error code Suction pipe temperature thermistor anomaly (Tho-S), Keeps flashing Stays Off E53/E55 Indoor Remote controller: E53/E55-1 Under-dome temperature thermistor anomaly (Tho-C1) 7-segment display: Keeps flashing 1 time flash Outdoor E53: Tho-S, E55-1: Tho-C1 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure...
  • Page 226 Green Error code Content High pressure sensor anomaly (PSH) Keeps flashing Stays Off Indoor Remote controller: E54-1, 2 *1 Low pressure sensor anomaly (PSL) 7-segment display: Keeps flashing Outdoor *1 E54-1: 1 time flash (PSL), E54-2 : 2 time flash (PSH) 5.

  • Page 227: Table Of Contents

    Green Content Error code Power transitor temperature Keeps flashing Stays Off Indoor Remote controller: thermistor anomaly (Tho-P1) E56-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition.

  • Page 228: Applicable Model

    Green Error code Content Anomalous compressor Keeps flashing Stays Off Indoor Remote controller: by loss of synchronism E58-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating condition Save data for 30 minutes before stopping in Mente PC Check the data for 30 minutes before stopping...

  • Page 229: Presumable Cause

    Green Error code Content Keeps flashing Stays Off Indoor Remote controller: Compressor startup failure (CM1) E59-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check the data for 30 minutes before stopping Check the power supply...

  • Page 230: Is The

    Green Error code Content Rotor position detection failure Keeps flashing Stays Off Indoor Remote controller: (CM1) E60-1 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Outdoor unit Diagnosis Countermeasure Check and save the data of Save data for 30 minutes before stopping in Mente PC operating conditions Correct it...

  • Page 231: Replace Remote Control

    Green Content Error code Keeps flashing Stays Off Indoor Remote controller: Emergency stop 7-segment display: Keeps flashing 1 time flash Outdoor 5. Troubleshooting 1. Applicable model Indoor unit Diagnosis Countermeasure Check and save the data of operating conditions Save data for 30 minutes before stopping in Mente PC Check the conditions whether it occurs immediately after the power...

  • Page 232: Precautions For Safety

    6.4 Replacement of PCB at outdoor unit side pcb012d017a (a) Control PCB replacement procedure Precautions for Safety ¡ Since the following precaution is the important contents for safety, be sure to observe them. WARNING and CAUTION are described as follows: Indicates an imminently hazardous situation which will result in death or serious injury if WARNING proper safety procedures and instructions are not adhered to.
  • Page 233 Fan motor voltage measurement point (between L63, L64) Pwb voltage measurement point (between F1, DS1(-)) Fig.2 Voltage measurement points Target pwb Fig.3 Appearance of the controller...
  • Page 234 pcb012d018ab (b) Inverter PCB replacement procedure Precautions for Safety ¡ Since the following precaution is the important contents for safety, be sure to observe them. WARNING and CAUTION are described as follows: Indicates an imminently hazardous situation which will result in death or serious injury if WARNING proper safety procedures and instructions are not adhered to.
  • Page 235 Fan motor voltage measurement point (L63 - L64) Target pwb Pwb voltage measurement point (F1-DS(-)) Fig.2 Voltage Measurement Points Terminal Harness Snubber capacitor Inverterpwb Connection binder Power transistor (Metallic pillar) Procedure on tightening harness (snubber capacitor) and power transistor with screw. •...
  • Page 236  Function of Dip switch for contor (SW3, 4, 5) • SW3 (Function setting) • SW4 (Change demand ratio) Switch Function Switch Function Inspection LED reset Compressor capacity 60% SW3-1 Normal Compressor capacity 0% SW4-5 SW4-6 Forced cooling/heating Compressor capacity 80% SW3-7 Normal Compressor capacity 40%...

  • Page 237: Wireless Kit

    OPTIONAL PARTS 7.1 Wireless kit WARNING ¡ Fasten the wiring to the terminal securely and hold the cable securely so as not to apply unexpected stress on the terminal. Loose connection or hold will cause abnormal heat generation or fire. ¡...

  • Page 238: Preparation Before Installation

    (A) FDT SERIES (RCN-T-36-W-E) The FDT series is an exclusive series with all wired models. However, these models can also be used wireless units by using the op- tional wireless kit. (1) Wireless kit model Model RCN-T-36-W-E (2) Accessories Please make sure that you have all of the following accessories. Receiver Remote controller holder Wireless...
  • Page 239 ② Remove the cover by unscrewing two screws from the back of receiver. ③ Change the setting by the switch on PCB. Screws Default settings Switch Receiver Backside Cover Backside ④ When SW1 is turned to OFF position, change the corresponding remote controller setting as follows: How to change the remote controller setting Pressing ACL and AIR FLOW button at the same time or inserting the batteries with pressing AIR FLOW button will customize the signal.

  • Page 240: Installation Of The Receiver

    Installation of the receiver ① Loosen the bolts which fix the panel and make a gap between the panel and the indoor unit ② Put the wiring of the receiver through the opening. ③ Put the wiring on the notch on the control box so as not to be pinched by the control box and lid as shown below. ④...
  • Page 241 (4) Remote controller Installation of the controller holder Caution DO NOT install it on the following places 1. Places exposed to direct sunlight 2. Places near heat devices 3. High humidity places 4. Hot surface or cold surface enough to generate condensation 5.
  • Page 242 Control plural indoor units with one remote controller Up to 16 indoor units can be connected. ① Connect the XY terminal with 2-core wire. As for the size, refer to the following note. ② For Packaged air conditioner series, set the indoor unit address with SW2 on the indoor unit PCB from [0] to [F] so as not to duplicate.
  • Page 243 ② Correlation between illuminance at the receiver and The receivable area of the reachable area of the signal in a plain view. The signal when the illuminance at the receiver is 300lux drawing in the right shows the correlation between the reachable area of the signal and illuminance at the receiver when the remote controller is operated at 1.1m high under the condition of ceiling height...

  • Page 244: Backup Button

    (6) Backup button A Backup button is provided on the receiver. backup button Even when the operation from the wireless remote controller is not possible (due to flat batteries, controller lost, or controller failure), still it possible to operate as temporary means. Press the button directly when operating it. The air conditioner starts the operation with the condition of Auto mode, 23˚C of set point, High fan speed and horizontal louver position.
  • Page 245 (B) FDTC SERIES (RCN-TC-24W-ER) The FDTC series is an exclusive series with all wired models. However, these models can also be used wireless units by using the optional wireless kit. (1) Wireless kit model Model RCN-TC-24W-ER (2) Accessories Please make sure that you have all of the following accessories. Receiver Remote controller holder Wireless...
  • Page 246 Setting on site ① PCB on the receiver has the following switches to set the functions. Default setting is shown with mark. Customized signal setting to avoid Normal mixed communication Remote Master Receiver master/slave setting Slave Valid Buzzer valid/Invalid Invalid Valid Auto restart Invalid...
  • Page 247 Installation of the receiver ① Attach the receiver to the panel according to the panel installation manual. ② Remove two screws and detach the lid from the control box. ③ Put the wiring in the control box with other wiring as shown below. ④...

  • Page 248: How To Insert Batteries

    (4) Remote controller Installation of the controller holder Caution DO NOT install it on the following places 1. Places exposed to direct sunlight 2. Places near heat devices 3. High humidity places 4. Hot surface or cold surface enough to generate condensation 5.
  • Page 249 Control plural indoor units with one remote controller Up to 16 indoor units can be connected. ① Connect the XY terminal with 2-core wire. As for the size, refer to the following note. ② For signal packaged air conditioner series, set the indoor unit address with SW2 on the indoor unit PCB from [0] to [F] so as not to duplicate.
  • Page 250 ② The receivable area of the Correlation between illuminance at the receiver and signal when the illuminance at the receiver is 300lux reachable area of the signal in a plain view. The drawing in the right shows the correlation between the reachable area of the signal and illuminance at the receiver when the remote controller is operated at 1m high under the condition of ceiling height of 2.4m.
  • Page 251 (7) Cooling test run operation ¡ After safety confirmation, turn on the power. Transmit a cooling operation command with wireless remote controller, while the backup button on the receiver is pressed. ¡ If the backup button on the receiver is pressed during a test run, it will end the test run. ¡...
  • Page 252 (C) FDE SERIES (RCN-E-E) PFA012D619A WIRELESS KIT INSTALLATION MANUAL WARNING  Use specified wire for electrical wiring, fasten the wiring to the terminal securely, and hold the cable securely in order not to apply unexpected stress on the terminal. Loose connections or hold could result in abnormal heat generation or re. ...
  • Page 253 ③ How to install the receiver The receiver can be installed by replacing with a cover of the panel. CAUTION：When installing the receiver after unit has been xed, injury due to falling may result because of working at high place. 1 Remove the cover Insert a at-blade screwdriver into the dented part (2 places), and wrench slightly.
  • Page 254  ⑤ Receiver Control plural indoor units with one remote controller Up to 16 indoor units can be connected. 1 Connect indoor units with each other with 2-core wires. As for size, refer to the following note. 2 The receiver wires must be connected only with the indoor unit that will be operated by the remote controller directly. 3 Use the rotary SW1 and SW2 provided on the indoor unit PCB (Printed circuit board) to set unique remote control communication address avoiding duplication.
  • Page 255  ⑤ Receiver (continued) Backup button A backup switch is provided on the receiver section of the panel surface. When operation from the wireless remote control unit is not possible (due to at batteries, a mislaid unit, a unit failure), you can use it as an emergency means.
  • Page 256 (D) EXCEPT FOR FDT, FDTC and FDE SERIES (RCN-KIT3-E) This product is dedicated for heat pump unit. Never install on the unit dedicated for cooling. (1) Wireless kit model Model RCN-KIT3-E (2) Accessories (Confirm the following accessories). Remote controller Light detection holder adaptor Screw for holder...
  • Page 257 (4) How to install the receiver The following two methods can be used to install the receiver onto a ceiling or a wall. Select a method according to the installation position. <Installation position> ① Direct installation onto the ceiling with wood screws. ②...
  • Page 258 ① Put through the wiring from the back side to the hole of the lower case. ② Fit the lower case into the ceiling opening. Make sure that the clearance between the convex part of the back of the lower case and the ceiling opening must be as equal as possible on both sides. ③...
  • Page 259 (5) Remote controller Installation of the controller holder Caution DO NOT install it on the following places Holder for 1. Places exposed to direct sunlight remote 2. Places near heat devices controller 3. High humidity places 4. Hot surface or cold surface enough to generate condensation 5.

  • Page 260: Wireless Remote Controller

    (7) Setting of wireless remote controller and receiver ( ) Methods of avoiding the malfunction due to the mixed communication Do both procedures ① and ② . This setting is to avoid the mixed communication with other household electric appliances or the mixed communication when two receivers are located closely.
  • Page 261 ( ) Control plural indoor units with one remote controller Up to 16 indoor units can be connected. ① Connect the XY terminal with 2-core wire. As for Restrictions on the thickness and length of wire the size, refer to the following note. (Maximun total extension 600m.) Standard Within 100m x 0.3 mm...

  • Page 262: Installation Of Remote Controller

    7.2 Simple remote controller (RCH-E3) Models RCH-E3 Names and functions of sections Remote controller sensor ON/OFF button Operation/Inspection lamp Button to start/stop the air conditioner During operation: Green failure: Red MODE button Use to select the mode. FAN SPEED button Button to set the fan speed TEMP button Use to raise the setting temperature.

  • Page 263: Wiring Specifications

    MITSUBISHI HEAVY INDUSTRIES,LTD. AIR-CONDITIONING & REFRIGERATION SYSTEMS HEADQUARTERS In case of embedding wiring Remote control installation dimensions Wall surface Wiring Wiring outlet Electrical box (In case of embedding wiring) （Prepare on site） 12×7 Slot hole Installation hole 9×4.5 Slot hole （2 places）...
  • Page 264 7.3 Fan controller kit for high static pressure duct. (U-FCRA) 7.3 Fan controller kit for high static pressure duct. ( U-FCRA )
  • Page 266 38 40 Lower Upper Lower Standard Standard Upper limit limit limit limit Air flow(m /min) Air flow(m /min) Characteristics of fan Model FDU224KXE6 • Condition of standard rating Rated air volume: 200Pa High High 50Hz 60Hz High High 50Hz 60Hz Example of duct Example...
  • Page 267 INVERTER DRIVEN MULTI-INDOOR-UNIT CLIMATE CONTROL SYSTEM Air-Conditioning & Refrigeration Systems Headquarters 16-5, 2-chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan Fax : (03) 6716-5926 Because of our policy of continuous improvement, we reserve the right to make changes in all specifications without notice. No.106 R...

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