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Related Manuals for Mitsubishi Heavy Industries FDCA Series
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- Page 1 Manual No. '04•M-T-089 Collection data MULTI-TYPE PACKAGED AIR-CONDITIONER (Split system, Air to air heat pump type) (OUTDOOR UNIT) (INDOOR UNIT) FDCA301HEN FDTA151 FDENA151 301HES 401HEN 401HES 501HES 601HES 801HES 1001HES FDKNA151 FDURA201...
- Page 2 CONTENTS 1 GENERAL INFORMATION................. 1 1.1 Specific features ..................1 1.2 How to read the model name ..............1 1.3 Table of models ................... 2 1.4 Table of system combinations ..............2 2 SELECTION DATA ..................... 3 2.1 Specifications ....................3 2.2 Range of usage &...
- Page 3 GENERAL INFORMATION Specific features Ideal for the installation conditions characteristic of larger rooms and L-shaped or other non-standard-shaped rooms, the Multi-Type V series allows an extensive degree of flexibility in the selection of indoor units. Specifically, the selection of indoor units with differing capacities and differing or similar types is supported, as is the selection of indoor units with similar capacities and differing types.
- Page 4 1.3 Table of models Capacity Model Ceiling recessed type (FDT) Ceiling suspension type (FDEN) Wall mounted type (FDKN) Ceiling mounted duct type (FDUR) FDCA301HEN FDCA301HES FDCA401HEN FDCA401HES FDCA501HES FDCA601HES FDCA801HES FDCA1001HES Outdoor unit to be combined (FDC) (3 Horse Power) (3 Horse Power) (4 Horse Power) (4 Horse Power)
- Page 5 2 SELECTION DATA 2.1 Specifications (1) Indoor unit (a) Ceiling recessed type (FDT) Models FDTA151, 201, 251 Model FDTA151 FDTA201 FDTA251 Item ( 1) Nominal cooling capacity 4000 5000 5600 ( 1) Nominal heating capacity 4500 5400 6700 Power source 1 Phase, 220/230V 50Hz Powerful mode Hi: 36 Me : 33 Lo: 32 Powerful mode Hi: 38 Me : 35 Lo: 33...
- Page 6 Models FDTA301, 401 Model FDTA301 FDTA401 Item ( 1) Nominal cooling capacity 7200 10000 ( 1) Nominal heating capacity 7300 11200 Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 38 Me: 35 Lo: 33 Powerful mode Hi: 46 Me: 43 Lo: 41 Noise level dB(A) Mild mode Hi: 35 Me: 33 Lo: 31...
- Page 7 Model FDTA501 Model FDTA501 Item ( 1) Nominal cooling capacity 12500 ( 1) Nominal heating capacity 13600 Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 48 Me: 45 Lo: 43 Noise level dB(A) Mild mode Hi: 45 Me: 43 Lo: 40 Exterior dimensions Unit:365 Height...
- Page 8 (b) Ceiling suspension type (FDEN) Models FDENA151, 201, 251 Model FDENA151 FDENA201 FDENA251 Item ( 1) Nominal cooling capacity 3800 5000 5600 ( 1) Nominal heating capacity 4500 5400 6700 Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 42 Me : 39 Lo: 38 Powerful mode Hi: 44 Me : 41 Lo: 39 Noise level dB(A)
- Page 9 Models FDENA301, 401 Model FDENA301 FDENA401 Item ( 1) Nominal cooling capacity 6400 10000 ( 1) Nominal heating capacity 7100 11200 Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 44 Me: 41 Lo: 39 Powerful mode Hi: 46 Me: 44 Lo: 41 Noise level dB(A) Mild mode Hi: 41 Me: 39 Lo: 38...
- Page 10 Model FDENA501 Model FDENA501 Item ( 1) Nominal cooling capacity 12600 ( 1) Nominal heating capacity 13300 Power source 1 Phase, 220/230/240V Powerful mode Hi: 48 Me: 46 Lo: 44 Noise level dB(A) Mild mode Hi: 46 Me: 44 Lo: 43 Exterior dimensions 1620 Height...
- Page 11 (c) Wall mounted type (FDKN) Models FDKNA151, 251 Model FDKNA151 FDKNA201 Item ( 1) Nominal cooling capacity 4000 5000 ( 1) Nominal heating capacity 4500 5400 Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 44 Me: 42 Lo: 40 Powerful mode Hi: 47 Me: 44 Lo: 41 Noise level dB(A)
- Page 12 Models FDKNA251, 301 Model FDKNA251 FDKNA301 Item ( 1) Nominal cooling capacity 5600 6700 ( 1) Nominal heating capacity 6300 7300 Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 48 Me: 45 Lo: 42 Powerful mode Hi: 49 Me: 46 Lo: 43 Noise level dB(A) Mild mode Hi: 45 Me: 42 Lo: 39...
- Page 13 (d) Ceiling mounted duct type (FDUR) Models FDURA201, 251 Model FDURA201 FDURA251 Item ( 1) Nominal cooling capacity 5000 5600 ( 1) Nominal heating capacity 5400 6400 Power source 1 Phase 220/230/240V 50Hz Noise level dB(A) Hi: 40 Lo: 36 Hi: 41 Lo: 37 Exterior dimensions Height...
- Page 14 Models FDURA301, 401 Model FDURA301 FDURA401 Item ( 1) Nominal cooling capacity 6700 10000 ( 1) Nominal heating capacity 7100 11200 Power source 1 Phase, 220/230/240V 50Hz Noise level dB(A) Hi: 41 Lo: 37 Hi: 42 Lo: 37 Exterior dimensions 1370 Height Width...
- Page 15 Model FDURA501 Model FDURA501 Item ( 1) Nominal cooling capacity 12500 ( 1) Nominal heating capacity 13600 Power source 1 Phase, 220/230/240V 50Hz Noise level dB(A) Hi: 43 Lo: 38 Exterior dimensions 1370 Height Width Depth Net weight Refrigerant equipment Louver fine &...
- Page 16 (2) Outdoor unit Models FDCA301HEN, 301HES Model FDCA301HEN FDCA301HES Item Power source 1 Phase, 220/230/240V 50Hz 3 Phase, 380/400/415V 50Hz ( 1) Nominal cooling capacity 7200 ( 1) Nominal heating capacity 7300 Noise level dB(A) Exterior dimensions Height Width Depth Net weight Refrigerant equipment ZP26K3E-PFJ...
- Page 17 Models FDCA401HEN, 401HES Model FDCA401HEN FDCA401HES Item Power source 1 Phase, 220/230/240V 50Hz 3 Phase, 380/400/415V 50Hz ( 1) Nominal cooling capacity 10000 ( 1) Nominal heating capacity 11200 Noise level dB(A) Exterior dimensions 1050 Height Width Depth Net weight Refrigerant equipment ZP41K3E-PFJ ZP41K3E-TFD...
- Page 18 Models FDCA501HEN, 601HES Model FDCA501HES FDCA601HES Item Power source 3 Phase, 380/400/415V 50Hz ( 1) Nominal cooling capacity 12600 14200 ( 1) Nominal heating capacity 13300 15900 Noise level dB(A) Exterior dimensions 1300 Height Width Depth Net weight Refrigerant equipment ZP54K3E-TFD ZP57K3E-TFD compressor type &...
- Page 19 Models FDCA801HES, 1001HES Model FDCA801HES FDCA1001HES Item Power source 3 Phase, 380/400/415V 50Hz ( 1) Nominal cooling capacity 20000 25000 ( 1) Nominal heating capacity 22400 28000 Noise level dB(A) Exterior dimensions 1690 1350 Height Width Depth Net weight Refrigerant equipment GU-C5176MS56 1 GU-C5192MS56 1 compressor type &...
- Page 20 (3) Operation chart The Multi series is a system that allows for different models and capacities of indoor units to be combined so the individual operating characteristics of the indoor and outdoor are provided. Use the procedure shown in Item (c) to calculate the combined operating characteristics.
- Page 21 FDKN Series (230 V) FDKN Series Model Item Power input (kW) 0.02 0.03 0.08 Running current (A) FDUR Series (230 V) Model FDUR Series Item Power input (kW) 0.19 0.22 0.24 0.37 0.45 Running current (A) Notes (1) This packaged air-conditioner is manufactured and tested in conformity with the following standard. ISO-T1 “UNITARY AIR-CONDITIONERS”...
- Page 22 2.2 Range of usage & limitations Model FDCA301~601 FDCA801, 1001 Item Indoor return air temperature (Upper, lower limits) Refer to the selection chart Outdoor air temperature (Upper, lower limits) Indoor unit atmosphere (behind ceiling) Dew point temperature: 28˚C or less, relative humidity: 80% or less temperature and humidity Max.
- Page 23 Height and length restrictions for refrigerant piping FDCA301HEN, 301HES, 401HEN, 401HES, 501HES, 601HES One-way pipe length (m) L +ra +rb Twin type 10, ra 20, rb Branch pipe length (m) Ira –rb I Outdoor unit Indoor unit Difference in height between indoor units (m) h=0.5 or less FDCA801HES, 1001HES One-way pipe length (m) L +ra 70, L +rb...
- Page 24 2.3 Exterior dimensions (1) Indoor unit (a) Ceiling recessed type (FDT) Models FDTA151, 201, 251 Notes (1) If the twin, triple or double twin 151 or 201 units are used, be sure to use φ 9.52 piping for the liquid pipe on the branch piping (branch fitting to indoor unit).
- Page 25 Model FDTA301 unit : mm Decorative Panel Fresh air (Ceiling hole size) 860~890 opening for (Suspension bolts pitch) ducting Control box Exhaust air opening for ducting Liquid piping Air outlet Air inlet grille ø9.52(3/8") VIEW A Gas piping Drain hose ø15.88(5/8") (Accessories) (Local setting)
- Page 26 Model FDTA401 unit : mm Decorative Panel Fresh air (Ceiling hole size) 860~890 opening for (Suspension bolts pitch) ducting Control box Exhaust air opening for ducting Liquid piping ø9.52 (3/8") Air inlet grille Air outlet Gas piping VIEW A ø15.88 (5/8") Drain hose (Accessories) (Local setting)
- Page 27 Model FDTA501 unit : mm Decorative Panel Fresh air (Ceiling hole size) 860~890 opening for (Suspension bolts pitch) ducting Control box Exhaust air opening for ducting Liquid piping ø9.52 (3/8") Air outlet Air inlet grille Gas piping VIEW A ø15.88 (5/8") Drain hose (Accessories) (Local setting)
- Page 28 (b) Ceiling suspension type (FDE) Models FDENA151, 201 Notes (1) If the twin, triple or double twin 151 or 201 units are used, be sure to use φ 9.52 piping for the liquid pipe on the branch piping (branch fitting to indoor unit). Use the irregular diameter joint supplied in the branch piping set for connection to the indoor unit.
- Page 29 Models FDENA401, 501 Unit : mm Holes for suspension bolts 290(Suspension bolts pitch) (M8 to M10×4pcs.Not included) 1572(Suspension bolts pitch) Liquid piping Gas piping 1540 Drain hose connection(1) 1620 (VP20) Air inlrt grille Indication board Note(1) The slope of drain piping inside the unit is able to take incline of 10mm.
- Page 30 Model FDKNA251 Unit : mm Installation position diagram and installation space, from the front. Service Mounting plate Unit space Service 4-12 18 space 5073.5 73.5 long hole 207.5 182.5 14.5 3 60 63.5 Hole on wall for rear connection 387.5 53.5 (ø65) 457.5...
- Page 31 (d) Ceiling mounted duct type (FDUR) Models FDURA201, 251 Notes (1) If the twin, triple or double twin 201 units are used, be sure to use φ 9.52 piping for the liquid pipe on the branch piping (branch fitting to indoor unit). Use the irregular diameter joint supplied in the branch piping set for connection to the indoor unit.
- Page 32 Model FDURA301 Unit : mm Air inlet duct (Low of suspension lug) (Dimension for duct) Control box Suspension bolts (M10 × 4pcs) 886 (Suspension bolts pitch) 850 (Dimension for duct) Liquid piping ø9.52 (3/8”) Air outlet duct Gas piping ø15.88 (5/8”) Drain (Connectable with VP25) Drain (Natural drainage, VP20)
- Page 33 Models FDURA401, 501 Unit : mm Air inlet duct (Dimension for duct) (Low of suspension lug) Control box Suspension bolts (M10 × 4pcs) 1406 (Suspension bolts pitch) 1370 (Dimension for duct) Liquid piping ø9.52 (3/8”) Gas piping ø15.88 (8/5”) Air outlet duct Drain (Connectable with VP25) Drain (Natural drainage, VP20)
- Page 34 (2) Remote controller (Optional parts) (a) Wired remote controller Unit : mm Installation with wiring exposed Installation with wiring recessed Wall 0.3mm , 3cores (O.D.ø5.6) Wire (Recessed) LCD display Electrical box (Locally Purchased) Remote controller mounting dimensions Cut off with a knife or the like thin walled parts Remote controller intended for screw holes,...
- Page 35 (b) Wireless remote controller (Optional parts) Unit: mm FILTER AUTO COOL DRY FAN HEAT FAN HI LO ° C MODE TEMP ON/OFF 20.5...
- Page 36 (3) Outdoor unit Models FDCA301HEN, 301HES Unit: mm Liquid piping: ø9.52 (3/8") (Flare connecting) Gas piping: ø15.88 (5/8") (Flare connecting) Liquid piping: ø9.52 (3/8") (Flare connecting) Terminal block Gas piping: ø15.88 (5/8") (Flare connecting) Opening for electric wring Opening for electric wring Opening for Opening for...
- Page 37 Models FDCA401HEN, 401HES Unit: mm Liquid piping: ø9.52 (3/8") (Flare connecting) Gas piping: ø15.88 (5/8") (Flare connecting) Terminal block Liquid piping: ø9.52 (3/8") (Flare connecting) Gas piping: ø15.88 (5/8") (Flare connecting) Opening for electric wring Opening for electric wring Opening for piping Opening for piping and electric wring and electric wring...
- Page 38 Model FDCA501HES Liquid piping: ø9.52 (3/8") Unit: mm (Flare connecting) Gas piping: ø15.88 (5/8") (Flare connecting) Terminal block Liquid piping: ø9.52 (3/8") (Flare connecting) Gas piping: ø15.88 (5/8") (Flare connecting) Opening for electric wring Opening for electric wring Opening for piping and electric wring Opening for piping and electric wring...
- Page 39 Model FDCA601HES Liquid piping: ø9.52 (3/8") Unit: mm (Flare connecting) Gas piping: ø15.88 (5/8") (Flare connecting) Terminal block Liquid piping: ø9.52 (3/8") (Flare connecting) Gas piping: ø15.88 (5/8") (Flare connecting) Opening for electric wring Opening for electric wring Opening for piping and electric wring Opening for piping and electric wring...
- Page 40 Models FDCA801HES, 1001HES Unit : mm 1350 Refrigerant liquid piping connection pipe Refrigerant gas piping connection pipe Power supply Drain hose 104.9 86.1 entry hole Power supply (ø50) Refrigerant piping connection Power supply exit hole terminal box entry hole (ø88) (ø50) Power supply entry hole...
- Page 41 2.4 Inside view (1) Outdoor unit Models FDCA401HEN,401HES unit : mm Electronic expansion valve Control box Accumlator 4-way valve Service valve (Liquid side) Service valve (Gas side) High pressure switch (63H1) Compressor Models FDCA801HES, 1001HES Low pressure sensor (PSL) Receiver Accumlator Electronic expansion valve...
- Page 42 2.5 Exterior appearance (1) Indoor unit (a) Ceiling recessed type (FDT) Pearl white (b) Ceiling suspension type (FDEN) Light gray Light gray (Vertical louver) Pearl white Pearl white (Horizontal louver) (Side panel) (Front panel) Pearl white (Front panel) Pearl white (Air inlet grille) (c) Wall mounted type (FDKN) Models FDKNA151,201,251...
- Page 43 (2) Outdoor unit Models FDCA301HEN, 301HES Models FDCA401HEN, 401HES Polar white Polar white Models FDCA501HES, 601HES Models FDCA801HES, 1001HES Polar white...
- Page 44 2.6 Piping system (1) Twin type Models FDCA301HEN, 301HES, 401HEN, 401HES, 501HES, 601HES Gas branch pipe Indoor unit Indoor unit Outdoor unit Cooling cycle Heating cycle (ø15.88) Check joint Check joint Gas line (ø15.88) Thermistor Service valve Strainer Branch pipe (Tho-A) 151,201:ø12.7 (Flare connecting)
- Page 45 (2) Triple type Model FDCA601HES Gas branch pipe (ø12.7) Indoor unit Indoor unit Indoor unit Outdoor unit Heating cycle Cooling cycle Check joint Check joint Gas line (ø15.88) Thermistor Branch pipe Service valve (ø12.7) (ø12.7) Strainer (Tho-A) (Flare connecting) (Brazing) Hea exchanger 4way valve Flarc connecting...
- Page 46 (3) Double twin type Model FDCA601HES 2st branch pipe of gas (151:ø12.7) Outdoor unit Heating cycle Cooling cycle Indoor unit Indoor unit (151:ø12.7) Check joint Check joint 1st branch Gas line pipe of gas (ø15.88) (ø15.88) Thermistor Branch pipe Service valve (Tho-A) (Brazing) (Flare connecting)
- Page 47 Models FDCA801HES,1001HES 2st branch pipe of gas 201:ø12.7 201:ø12.7 251:ø15.88 Outdoor unit Heating cycle Indoor unit Indoor unit 251:ø15.88 Cooling cycle Service valve Thermistor Thermistor 1st branch Thermistor Gas line (With charge port) (Tho-R3) (Tho-R4) pipe of gas Thermistor (ø25.4) (Tho-R2) (ø15.88) (Tho-A)
- Page 48 Preset point of the protective devices Equipped Parts name Mark FDCA301, 401, 501, 601 models FDCA801, 1001 models unit Thermistor ON 63˚C (for protection over- OFF 56˚C loading in heating) Indoor unit ON 1.0˚C Thermistor (for frost prevention) OFF 10˚C Thermistor ON 121˚C ON 135˚C...
- Page 49 2.7 Selection chart Correct the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can be obtained in the following way. Net capacity = Capacity shown on specification × Correction factors as follows. (1) Coefficient of cooling and heating capacity in relation to temperatures Indoor air W.B.
- Page 50 Model FDKN type Model FDKNA151, 201 FDKNA251 FDKNA301 Item 0.056 0.063 0.043 Air flow 0.041 0.048 0.034 0.028 0.034 0.025 Model FDUR type Model FDURA201 FDURA251 FDURA301 FDURA401 FDURA501 Item 0.111 0.053 0.069 0.106 0.050 Air flow 0.083 0.037 0.049 0.079 0.034 (2) Correction of cooling and heating capacity in relation to air flow rate control (fan speed)
- Page 51 (4) When the outdoor unit is located at a lower height than the indoor unit in cooling operation and when the outdoor unit is located at a higher height than the indoor unit in heating operation, the following values should be subtracted from the values in the above table.
- Page 52 2.8 Characteristics of fan (1) Ceiling mounted duct type (FDUR) Model FDURA201 Model FDURA251 Standard Standard pressure pressure 12 13 14 Lower Lower Upper Upper Standard Standard limit limit limit limit air flow air flow Air flow(m /min) Air flow(m /min) Model FDURA301...
- Page 53 Model FDURA501 Standard pressure 33.5 35.5 37.5 39.5 41.5 43.5 45.5 47.5 49.5 Lower limit Upper Standard limit air flow Air flow(m /min) 2.9 Noise level Notes (1) The data are based on the following conditions. Ambient air temperature: Indoor unit 27˚C DB, 19˚C WB. Outdoor unit 35˚C DB. Notes (2) The data in the chart are measured in an unechonic room.
- Page 54 Model FDTA401 Model FDTA501 Noise level 46 dB (A) at HIGH Noise level 48 dB (A) at HIGH 43 dB (A) at MEDIUM 45 dB (A) at MEDIUM 41 dB (A) at LOW 43 dB (A) at LOW 1000 2000 4000 8000 1000...
- Page 55 (c) Wall mounted type (FDKN) Unit Measured based on JIS B 8616 Mike position as right Mike (Center & Low points) Model FDKNA151 Model FDKNA201 Model FDKNA251 Noise level 44 dB (A) at HIGH Noise level 47 dB (A) at HIGH Noise level 48 dB (A) at HIGH 42 dB (A) at MEDIUM 44 dB (A) at MEDIUM...
- Page 56 Model FDURA401 Model FDURA501 Noise level 42 dB (A) at HIGH Noise level 43 dB (A) at HIGH 37 dB (A) at LOW 38 dB (A) at LOW 1000 2000 4000 8000 1000 2000 4000 8000 Mid Octave Band Frequency (Hz) Mid Octave Band Frequency (Hz) (2) Outdoor unit Measured based on JIS B 8616...
- Page 68 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER (1) Remote controller (a) Wired remote controller 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 69 (b) Wireless remote controller Signal sender OPERATION MODE indicator Signals are sent to the air conditioner Indicates selected operation mode from here. Filter reset indicator Fan speed mark is indicated when the FILTER Indicates the selected fan speed FILTER RESET button is pressed. Auto swing Temperature indicator Indicates the selection of swing louver.
- Page 70 (2) Operation control function by the indoor controller (a) Room temperature control (Differential of thermostat) Heating operation Cooling operation OFF (52C) Set temp.by thermostat Set temp.by thermostat Temperature difference between thermostat set Temperature difference between thermostat set temp. temp. and return air temp. (Detected by Th and return air temp.
- Page 71 (d) Dehumidifying operation (“THERMAL DRY”) The compressor, the indoor fan motor and the outdoor fan Operation block motor are operated intermittently under thermistor (Th control according to the appropriate operation block, to pro- vide cooling operation for the dehumidifying. High Set temp.
- Page 72 4) Weekly Timer Each day, it is possible to set this timer's operation up to 4 times (On time, or Off timer). 5) Possible joint use timer operation setting combinations Simple Timer Time Off Timer Time On Timer Weekly Timer Simple Timer Time Off Timer Time On Timer...
- Page 73 (h) Room temperature sensing temperature compensation during heating In the standard specifications, the temperature set on the thermostat is used to turn the compressor on and off, but in cases where the warm air easily escapes to the ceiling and the thermostat ends up turning off too soon, Jumper wire J4 (SW7-4) on the indoor PCB can be disconnected.
- Page 74 (k) Condensate pump motor (DM) Control [FDT and FDUR models only] (a) Drain motor is started no sooner than the compressor is turned ON during cooling or dehumidifying operation. The drain motor continues to operate for 5 minutes after the stop of unit operation, stop with the error stop, thermostat stop and at switching from cooling or dehumidifying operation to blowing or heating operation.
- Page 75 (q) Using 1 remote controller to control multiple units (indoor units - up to 16 units) 1) Function A single remote control switch can be used for group control of multiple units (indoor units - up to 16 units). All units in the group that have had the remote control switch set at [Operating Mode] can be turned on and off in order of the unit number.
- Page 76 2) Control of input signal (Make sure to connect the standard remote control unit. Control of input signal is not available without the standard remote controller.) Control of input signal (switch input, timer input) connectors (CnT) are provided on the control circuit board of the indoor unit.
- Page 77 (3) Operation control function by the wired remote controller (a) Remote controller operation mode switch switching sequence COOL HEAT AUTO (b) CPU reset If the “GRILL” switch and “CHECK” switch on the remote controller are pressed at the same time, this function is activated. Power supply reset and run are the same.
- Page 78 (4) Operation control function by the outdoor controller (a) Compressor Starting Control (FDCA801, 1001 models only) The controls in 1) and 2) are performed at the moment when compressor operating conditions are met. 1) If the operating mode is the same as the mode the first time the compressor started after the power was turned ON or the same as the operating mode the previous time.
- Page 79 2) During heating operation, the fan speed is controlled in accordance with the outdoor heat ex- changer temperature (detected by Tho-R) and the outside air temperature (detected by Tho-A). Tho-A Zone A Zone B Zone C Tho-R Zone D 1th speed 4th speed 4th speed Zone A...
- Page 80 (d) Defrosting Models FDCA301~601 1) Defrosting start conditions — 2 Defrosting operation starts when all the follow- — 5 ing conditions are satisfied. Defrosting operation start temperature SW5-1 ON — 7 a) If 45 minutes of cumulative compressor operating time have passed since defrosting —...
- Page 81 2) After the compressor stops the first time, if 60 seconds pass with the detected current not dropping to 1.5~2 A or lower for 60 minutes, An abnormal stop is performed after the first time. Models FDCA801, 1001 only 1) If an overcurrent of 20A or greater is detected 5 times in 60 minutes after the compressor goes ON, or if an overcurrent of 20A or greater is detected continuously for 60 minutes while the compressor is stopped, an abnormal stop (E33) occurs.
- Page 82 (v) High pressure control Models FDCA301~601 only 1) Heating a) After the compressor starts, the temperature at the indoor heat exchanger temperature (ThI-R) is checked, and when all the following conditions are met, the electronic expansion valve (EEV) is controlled to control the high pressure rise.
- Page 83 Detection of disconnected wires in temperature thermistors (outdoor heat exchanger, outside air tem- perature, discharge pipe, suction pipe, under-dome) and low pressure sensor. 1) Outdoor heat exchanger temperature thermistor, outside air temperature thermistor and low pressure sensor If the following conditions are detected continuously for 5 seconds between 2 minutes and 2 minutes 20 seconds after the compressor goes ON, the compressor stops.
- Page 84 2) Test operation control a) Each protective control and abnormal sensing control is activated. b) If SW5-4 (SW3-4) is switched back during test operation, stop control is implemented and the cooling and heating operations are toggled. c) Remote control unit settings and displays during test operation Capacity Remote control unit settings, display contents Mode...
- Page 85 APPLICATION DATA SAFETY PRECAUTIONS • Please read these “Safety Precautios” first then accurately execute the installation work. • Though the precautionary points indicated herein are divided under two headings, WARNING and CAUTION , those points which are related to the strong possibility of an installation done in error resulting in death or serious injury are listed in the WARNING section.
- Page 86 5.1 Installation of indoor unit (1) Ceiling recessed type (FDT) (a) Selection of installation location 1) Select location where the space above ceiling is larger than those mentioned right side and perfect draining can be assured. Model Space above ceiling (h) FDT151, 201, 251, 301 Over 290mm 2) With the customer’s consent, select a location with following suitable condi-...
- Page 87 (c) Suspension ¡ Please arrange four sets of a suspension bolt (M10 or M8), a nut matching the bolt, a flat washers and a spring washer on the installation site. When suspension from the ceiling 1) In the case of the standard series: Cut and opening of 860~ 890.
- Page 88 b) Give the drain piping a descending grade (1/50-1/100) and never cre- Suspension 1.5 m ~ 2 m bolts ate 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 unit side piping and fix the pipe at a point as close to the unit as Insulation Desceding slope...
- Page 89 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 “...
- Page 90 4) Removing the air inlet grille 1 Raise up the notched portion of the air inlet grille and open it. 2 With the air inlet grille open, remove the air inlet grille hinge from the decorator panel. 5) Removing the corner panel •...
- Page 91 4 Connect the (white, 5p) louver motor con- nector. 5 Place each of the connectors inside the con- trol box. Note (1) : If the air outlet louver does not operate using the remote controller, check the connector’s connection, then turn the main power supply OFF for 10 seconds or longer and turn the power ON again.
- Page 92 8) Corner panel installation 1 Hook the corner panel strap to the pin on the decorator panel as shown in the figure. 2 Insert part on the corner panel in part on the decorator panel, then fit the 2 claws and fasten the corner panel screw.
- Page 93 (b) Wireless remote control unit operation distance 1) Standard signal receiving range [Condition] Illuminance at the receiver area: 360 lux. (When no lighting fixture is located within 1m of indoor unit in an ordinary office.) Ceilling surface Wireless remote control unit Floor surface Within 60˚...
- Page 94 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 lug mounting suspension bolt (M8) 4) Suspension Bolt Position Lug for suspension a) Using the paper pattern supplied as an accessory as a criterion, select suspension bolt positions and piping hole positions, then install the suspension bolts and Paper...
- Page 95 3) In order to make it easier for water to drain out, install the unit so that the water drain side slopes downward. ● Front-rear direction ● Left-right direction (The figure shows the case where the drain hose is on the right side.) (If the connection is on the left side, reverse the slope.) If the slope is reversed, there is danger of water leaking out.
- Page 96 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...
- Page 97 Relation between illumination at receiver Caution item for close installation of unit and operating distance multiple units (Plan view) (Plan view) Effective scope Effective scope 60° 60° 60° [Condition] Illumination at suction grill face 800 lux 2) Cautions for operation a) Orient the remote control switch properly toward the receiver of the unit.
- Page 98 2) Cautions for left take-out and rear take-out case a) Looking down b) The piping can be taken out from the rear, left, left rear, right and down. For left running horizontal piping For right running horizontal piping For left rear take-out piping For right rear take-out piping Right For left running horizontal piping...
- Page 99 (4) Ceiling mounted duct type (FDUR) (a) 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.
- Page 100 1) Fixing the suspension bolt (customer ordered parts M10) Securely fix the suspension bolt as illustrated below or in another way. Suspension bolt Hole in anchor bolt M10 nuts Suspension bolt M10 Hole-in plug Insert M10 Washer Indoor unit Indoor unit Concrete Suspension bolt M10 M10 Spring washer...
- Page 101 CAUTION ¡ Taps should not be used under static pressure outside the unit mentioned above. Dew condensation may occur with the unit and wet the ceiling or furniture. ¡ Do not use under static pressure outside the unit of 50Pa or less. Water drops may be blown from the diffuser outlet of the unit and wet the ceiling or furniture.
- Page 102 9) Drainage test a) Conduct a drainage test after completion of the electrical work. b) During the trial, make sure that drain flows properly through the piping and that no water leaks from connections. c) In case of a new building, conduct the test before it is furnished with the ceiling. d) Be sure to conduct this test even when the unit is installed in the heating season.
- Page 103 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 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 “...
- Page 104 Bad example of duct work Louver to outdoor air For ventilation 7) 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.
- Page 105 7) Use a cord clamp to attach the remote con- 5.2 Installation of remote controller troller cord to the wall. 8) Set the functions according to the types of (a) Selection of installation location indoor unit. See Section “Function Setting’’. Avoid the following locations 1) Direct sunlight.
- Page 106 5.3 Installation of outdoor unit Special instructions for R410A air conditioning systems ● Use only R410A refrigerant. R410A refrigerant is operated at about 1.6 times as high pressure as the conventional refrigerant ● Air conditioning systems using R410A are equipped with different-diameter outdoor unit service valve charge ports and check joints provided in the units so as to prevent wrong refrigerant from being charged by mistake.
- Page 107 (d) Location where strong wind blows against the unit ● Where the unit is likely to be subjected to strong winds, guard it from winds with the following measures. A failure to give protection against winds may cause performance degradation, a rise of high pressure resulting is an operation interruption, a broken fan, etc.
- Page 108 S Models FDCA801, 1001 only (a) Selecting the installation location 1) Where air is not trapped. 5) Where it is safe for the drain water to be discharged. 2) Where the installation fittings can be firmly installed. 6) Where noise and hot air will not bother neighboring residents. 3) Where wind does not hinder the intake and outlet pipes.
- Page 109 • Pattern 3 Multiple longitudinal and vertical and horizontal rows installed Unit: mm H=1000 or less 1500 Front H=1000 H=1000 or less or less Front H=1000 or less • Pattern 4 Multiple longitudinal and vertical and horizontal rows installed H=1500 or less Front 1500 H=1000...
- Page 110 (2) Refrigerant piping work Select the piping specification to fit the specification of Indoor unit and installation location. (a) Decision of piping specification Twin type Models FDCA301~601 [Branch pipe set : DIS-WA1] Chart of shapes of branch piping parts (DIS-WA1) Gas pipe Mark Liquid pipe...
- Page 111 (ii) Triple type Model FDCA601 [Branch pipe set : DIS-TA1] Indoor unit Chart of shapes of branch piping parts (DIS-TA1) Gas pipe Mark Liquid pipe Mark Reducer Mark ID9.52×3 80 80 ID12.7×3 Gas line ID9.52 φ6.35 Outdoor unit ID9.52 Flared nut ID15.88 Liquid line Notes (1) 1 to 3 in the drawing include parts provided in the branch piping set.
- Page 112 (iii) Double twin type Models FDCA601 [Branch pipe set : DIS-WA1 3set] Indoor unit DIS-WA1 DIS-WA1 Gas line Outdoor unit Liquid line DIS-WA1 Item Liquid pipe Gas pipe Indoor unit combinations Main pipe 1st branch pipe 2st branch pipe Main pipe 1st branch pipe 2st branch pipe Model...
- Page 113 Models FDCA801, 1001 [Branch pipe set : DIS-WA1 2set, DIS-WB1 1set] Indoor unit DIS-WA1 DIS-WB1 Gas line Outdoor unit Liquid line DIS-WA1 Item Liquid pipe Gas pipe Indoor unit combinations Main pipe 1st branch pipe 2st branch pipe Main pipe 1st branch pipe 2st branch pipe Model...
- Page 114 3) A flare size for R410A is different from that for R407C. Although we recommend the use of flare tools developed specifically for R410A, conventional flare tools can also be used by adjusting the measurement of protrusion B with a protrusion control copper pipe gauge.
- Page 115 (3) Air tightness test and air purge ● Always use a vacuum pump to purge air trapped within an indoor and the refrigerant piping. (a) Air tightness test 1) When all the flare nuts on both indoor and outdoor unit sides are fastened. Conduct an air-tightness test from the service valves (on both liquid and gas sides) closed tightly to check whether the system has no leaks.
- Page 116 S Models FDCA301~601 Hexagonal wrench type Pin type Remove the hexagon cap nut, set it as illustrated in the Hexagonal Head Wrench drawing below. (M4) Sloppre Open Factory setting Liquid/gas operation Open (close) • When a pin setting operation is completed, replace the •...
- Page 117 (b) Example of calculation of additional charge volume FDCA801 (Twin type) Main pipe: 20 m, Branch pipe: 15m What is the amount of additional charge? ( 20 5 ) 0.12 15 0.06 2.7 Additional charge (kg/m) per meter of branch pipe Branch pipe total length (m) Additional charge (kg/m) per meter of main pipe Length of main pipe (m) that can be connected with...
- Page 118 (7) Electrical wiring ● This air conditioning system should be notificated to supply authority before connection to power supply system. Selection of size of power supply and interconnecting wires. IMPORTANT ¡ Electric wiring work should be conducted only by authorized personnel. ¡...
- Page 119 (c) Plural Master / Slave setting Set the plural address switches SW5-1 and SW5-2 on the indoor circuit Master setting at time of Indoor unit factory shipment Master Slave a Slave b Slave c board as shown in the table below. Plural address switch SW5-1 SW5-2 Remote controller wiring and connection procedure...
- Page 120 (8) Setting functions using the remote controller (a) The default settings of this unit's functions are as follows: If you want to charge a setting, follow the procedure found in the installation manual and set to your desired setting. For the method of setting, please refer to the installation manual of a remote controller unit. 1 Remote controller unit functions ( 2 Indoor unit functions (I/U FUNCTION FUNCTION...
- Page 121 (b) Function setting method Operating guide message 1) Stop the air conditioner Function description: B , Settting: C Function number: A 2) Press the SET and MODE buttons simultaneously for 3 seconds or longer. The screen display will be switched as follows: Confirm Button “...
- Page 122 When “I/U FUNCTION ” is selected. 1 The screen display will be switched as follows: “ I/U SELECT” “ SET” “I/U No.00” (blinking) I/U No.00 2 Press either button. Select the indoor unit number that you want to change settings. If only one indoor unit is connected, the indoor unit number will not charge, so please proceed to Step 3.
- Page 123 (d) Changing the remote controller’s temperature setting range 1) The temperature setting range of the remote controller can be changed. Through remote controller button operations, the upper limit and lower limit set temperature values can be changed individually. During heating operation, the changed upper limit value becomes valid and at times other than during heating operation, (during cooling, dehumidification, auto and fan operation), the changed lower limit value becomes valid.
- Page 124 (9) Test run (a) Carry out test operation from outdoor units. Models FDCA301~601 1) Test run method a) A test run can be initiated from an outdoor unit by using SW2 and SW5-4 for on-site setting. b) Press SW2 (push-button switch) for one second. The compressor will start when the button is released. The compressor will stop when 30 minutes elaps.
- Page 125 (10) Checking Operation Data Operation data can be checked with remote controller unit operation. 1 Press the CHECK button. The display change from “ SELECT ITEM” “ SET" “OPERATION DATA ”. 2 Press the SET button while “OPERATION DATA ” is displayed. 3 The display will change to “I/U No.
- Page 126 MAINTENANCE DATA 6.1 Servicing (1) Evacuation The evacuation is a procedure to purge impurities, such as noncondensable gas, air, moisture from the refrigerant equipment by using a vacuum pump. Since the refrigerant R410A is very insoluble in water, even a small amount of moisture left in the refriger- ant equipment will freeze, causing what is called ice clogging.
- Page 127 (2) Refrigerant charging After the evacuation shown in the above, change the connection of the charge hose A to the refrigerant cylinder. Purge air from the charge hose A . First loosen the connecting portion of the charge hose at the gauge manifold side and open valve 3 for a few seconds, and then immediately retighten it after observing that gas has blown out from loosened connecting portion.
- Page 130 (b) Display sequence of error, inspection display lamp 1) One kind error Display corresponding to the error is shown. 2) More than one errors. Section Display section • Displays the error of higher priority (When plural errors are persisting) Error code of remote controller ···········...
- Page 131 4) Recording and reset of error Error display Memory Reset Error code of remote • Saves in memory the mode of higher • Stop the unit operation by pressing the ON/OFF switch of remote controller priority controller. • Operation can be started again if the error has been reset. Indoor unit inspection lamp •...
- Page 132 Parts layout on the indoor unit PCB Model: FDT series Fan motor To power supply (151~401) (CNW7) To power supply PCB (501, 601) (CNW9) CNW7 Louver motor CNM3 Fan motor CNW9 (501, 601) 52X8-1 52X7 52X6 52X1 52X2 52X3 PC2 PC1 52X4 Power supply PCB (CNW8)
- Page 133 Model: FDEN series PCB power supply connector (Primary side) Power supply CNW1 CNW0 CNM1 PCB power supply connector (Secondary side) Remote controller Fan motor DIP switch (SW5) J5, J6 SW10 (SW8) CNH CNN1 J1~J4 (SW7) DIP switch (SW9) Address switch Connector J9~J11 (SW2)
- Page 134 Model: FDKN series This diagram shows the PCB for the 151~251. The component layout on the 301 PCB is different, but the functions are the same. Heat exchanger thermistor, Return air thermistor Remote controller Heat exchanger thermistor (Thl-R1, Thl-A) (Thl-R2) TB,3 Dip switch (SW5)
- Page 135 Model: FDUR series Heat exchanger thermistor, Return air thermistor Address swith (Thl-R1, Thl-A) (SW2) (SW8) Heat exchanger thermistor DIP switch DIP switch (Thl-R2) (SW5) (SW9) Float switch Remote controller J10~J11 J1~J4 Connector (SW10) (SW7) (CNT) CNN1 CNN2 SW10 Drain motor LED2 LED1 52X3...
- Page 136 (c) Check method when the error code is display Remote controller or Indication board: Inspection LED, error code Indoor unit PCB: Red LED (inspection display), Green LED (CPU. normal display) Outdoor unit PCB: ARed LED (inspection display), Green LED (CPU. normal display) Error display : No display [Power supply line error] LCD display : No display...
- Page 137 Indoor unit Outdoor unit Red LED 3 time flash Red LED Stays OFF Keeps flashing Keeps flashing Green LED Green LED Remote controller wiring Correction connect check (Red· White·Black) Approximately Remote controller wire Power supply reset disconnection? Normal? 10 ~ 11 V between Remote controller defective X and Z.
- Page 138 Indoor – outdoor communications trouble ” Error display “ WAIT (Initial (when the power is turned on) Indoor unit Outdoor unit Red LED Stays OFF Red LED 2 time flash Green LED Keeps flashing Green LED Keeps flashing Notes (1) If trouble occurs during communications, the error code E5 is displayed (Outdoor, Red LED flashes 2 times).
- Page 139 Error display [Communication error between remote controller~Indoor unit] Indoor unit Outdoor unit Red LED Stays OFF Red LED Stays OFF Green LED Keeps flashing Green LED Keeps flashing Voltage between X and Z Replacement remote Remote controller approximately controller wire is removed 10~11 V? Is the resistance between...
- Page 140 Error display [Defective indoor unit heat exchanger thermistor] Indoor unit Outdoor unit Return air thermistor (Th Stays OFF Red LED 1 time flash Red LED Indoor unit heat exchanger thermistor Keeps flashing R1, R2) Green LED Keeps flashing Green LED Resistance temperature characteristics Defective indoor unit control PCB Replace-ment (Defective indoor unit...
- Page 141 Error display [Heating overload] Indoor unit Outdoor unit Stays OFF Red LED 1 time flash Red LED Keeps flashing Green LED Keeps flashing Green LED Notes (1) Check if the overload state exists or not using the following check points. Is there a short circuit? Clean it.
- Page 142 [Control of 1 remote controller VS multiple units Error display : Excessive number of units (more than 17 units) ] Indoor unit Outdoor unit Stays OFF Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Are more than 17 units connected Reduce to 16 units...
- Page 143 S Only case of FDKN Only case of 151~251 types Abnormal data check with remote controller After check reset, fan runs on Me. Fan ON? 3 (Black) is GND. Check the Replacement indoor 1 and 3 (Red – Black) Was it reproduced? circumstances.
- Page 144 Error display : [Directive remote controller thermistor.] Indoor unit Outdoor unit Red LED Stays OFF Red LED Stays OFF Green LED Keeps flashing Green LED Keeps flashing Are characteristics of Detectivie remote controller PCB Is the remote controller remote controller therm- Replacement (Detective re- thermistor connector co- istor OK or is there any...
- Page 145 (4) Error diagnosis procedures at the outdoor units side At the error diagnosis related to the outdoor unit, check at first the error code of remote controller and the illumination patterns of norma1 and inspection display lamps in the same manner as the case of indoor unit. Then estimate the outline, the cause and the location of error based on the pattern and proceed to the inspcetion and repair.
- Page 146 Parts layout on the outdoor unit PCB S Models FDCA301~601 type Stepping motor PCB power supply connector (Secondary side) Outdoor air thermistor, Outdoor heat exchanger thermistor, CNA2 Discharge pipe thermistor Outdoor unit power supplly (Tho-A, Tho-D, Tho-R1, 2) IC12 PCB power supply connector (Primary side) High pressure switch 1 2 3 4...
- Page 147 S Models FDCA801, 1001 type ● Control PCB PCB power supply connector LED3 (green) LED2 (red) (Secondary side) CNG2 CNB4CNB3CNB2 CNB1 CNL2 CNA3 LED3 LED2 LED1 CNN2 CNN9 CNR1 CNN8 CNN1 LED1 (red) PCB power supply connector (Primary side) Control change switch (SW3, SW4, SW5) ●...
- Page 148 Error display [Communications error during operation] Indoor unit Outdoor unit 2 time flash Red LED 2 time flash Red LED Keeps flashing Green LED Keeps flashing Green LED Is the connection Did the remote Is the connection “ WAIT ” Reset power “...
- Page 149 Error display [Compressor overcurrent trouble] Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Is the voltage • 52C is faulty. AC220/240V between the Out of phase between the •...
- Page 150 Error display : [Cooling overload operation] Indoor unit Outdoor unit Red LED Stays OFF Red LED 1 time flash Keeps flashing Green LED Keeps flashing Green LED Check the unit side. • Is there a short circuit in the outdoor unit? •...
- Page 151 Error display : [Defective outdoor unit heat exchanger thermistor] Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Defective outdoor unit control Is the outdoor Are the outdoor unit Replacement (Defective unit heat exchanger heat exchanger thermistor...
- Page 152 Error display : [Defective discharge pipe thermistor] Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Defective outdoor unit control Is the discharge Are the discharge Replacement (Defective pipe thermistor pipe thermistor characteristics discharge pipe thermistor...
- Page 153 [Abnormal low pressure or low pressure sensor wire disconnected] Error display (Only case of FDCA801, 1001 type) Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Is the low pressure sensor connector’s connection Correction (sensor side, PCB side) OK?
- Page 154 Error display : [Defective suction pipe thermistor] (Only case of FDCA801, 1001 type) Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Defective outdoor unit control Is the suction pipe Are the suction pipe thermistor Replacement (Defective thermistor connector...
- Page 155 Error display : [Defective under-doom thermistor] (Only case of FDCA801, 1001 type) Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Defective outdoor unit control Replacement (Defective under-doom thermistor input circuit) Under-doom thermistor (Th Resistance temperature characterisics Is the...
- Page 156 (d) How to advance checks for each faulty symptom Inspection method when there is no error display 1) Louver motor does not operate Inspect at the indoor unit side. Does the Is LM wire Is LM Defective indoor louver operate at broken? locked? unit PCB...
- Page 157 (5) Check abnormal operation data with the remote controller Operation data are recorded when there is an abnormal state and these data can be displayed in the remote controller by operating the remote controller buttons. (1) Press the CHECK button. FUNCTION”...
- Page 158 6.4 Check display on wireless specification models (FDEN · FDKN) (1) Indication board (a) FDEN Series Romote controller signal receiving part Backup switch TIMER CHECK Operation display light (Green) • Lights continuously: Under air conditioner operaton • Keeps flashing: Under heating preparation (At the time of heating operation) •...
- Page 159 WIRELESS KIT (OPTION FOR FDT MODEL ONLY) The FDT series is an exclusive series with all wired models. However, these models can also be used as wireless units by using the optional wireless kit. Model Model FDT series all model (1) Wireless kit model Model Paint color...
- Page 160 (4) Wireless remote controller unit: mm LCD display FILTER AUTO COOL DRY FAN HEAT FAN HI LO ° C MODE TEMP ON/OFF Operation part (Inside of lid) 20.5 (5) Attachment of wireless kit Installation of the receiver 1) Preparation before installation 1 Attach the cover panel supplied as an accessory onto the indoor unit according to the panel installation manual.
- Page 161 2 Turn switches provided on the back of the PCB. Switches (SW1-4) provided on the receiver PCB are for setting the following. All switched are set to the ON position for shipment. Default setting Prevention of unintended Normal movement caused by interference. OFF: Remote Master...
- Page 162 (6) Control of a plural number of indoor units with one remote controller Up to 16 indoor units can be connected. Terminal 1 Connect indoor unit’s X, Y and Z terminals with block X Y Z 3-core connecting wires (remote controller signal Indoor unit Indoor unit (16)
- Page 163 PACKAGED AIR-CONDITIONER Air-Conditioning & Refrigeration Systems Headquarters 16-5, 2-chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan Fax : (03) 6716-5926...