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Mitsubishi FDCVA302HENR Manual

Split system, air to air heat pump type
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Collection data
PACKAGED AIR-CONDITIONER
(Split system, Air to air heat pump type)
CEILING RECESSED TYPE
FDTVA302HEN1R
CEILING SUSPENDED TYPE
FDENVA302HEN1R
SATELLITE DUCTED TYPE
FDUMVA302HEN2R
MULTI-TYPE (V-MULTI)
PACKAGED AIR-CONDITIONER
(OUTDOOR UNIT)
FDCVA302HENR
(INDOOR UNIT)
FDTCA151R
FDTA151R
FDENA151R
FDKNA151R
Manual No. '06
PAC-T-109
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Summary of Contents for Mitsubishi FDCVA302HENR

  • Page 1 Manual No. '06 PAC-T-109 • Collection data PACKAGED AIR-CONDITIONER (Split system, Air to air heat pump type) CEILING RECESSED TYPE FDTVA302HEN1R CEILING SUSPENDED TYPE FDENVA302HEN1R SATELLITE DUCTED TYPE FDUMVA302HEN2R MULTI-TYPE (V-MULTI) PACKAGED AIR-CONDITIONER (OUTDOOR UNIT) (INDOOR UNIT) FDCVA302HENR FDTCA151R FDTA151R FDENA151R FDKNA151R...
  • Page 2 TABLE OF CONTENTS 1. PACKAGED AIR-CONDITIONER ..................2 2. MULTI-TYPE (V MULTI) PACKAGED AIR-CONDITIONER ..........122 3. WIRELESS KIT (OPTIONAL PARTS) ................190...

  • Page 3: Table Of Contents

    1. PACKAGED AIR-CONDITIONER CONTENTS 1.1 GENERAL INFORMATION................4 1.1.1 Specific features ..................4 1.1.2 How to read the model name ............... 4 1.2 SELECTION DATA ................... 5 1.2.1 Specifications ....................5 (1) Ceiling recessed type (FDT) ................. 5 (2) Ceiling suspended type (FDEN) ..............6 (3) Satellite ducted type (FDUM)................
  • Page 4 1.5 APPLICATION DATA ..................49 1.5.1 Installation of indoor unit ................50 (1) Ceiling recessed type (FDT) ............... 50 (2) Ceiling suspended type (FDEN) ..............56 (3) Satellite ducted type (FDUM)..............61 1.5.2 Installation of wired remote controller ............68 1.5.3 Installation of outdoor unit .................

  • Page 5: General Information

    GENERAL INFORMATION 1.1.1 Specific features (1) A new refrigerant, R410A, which causes no damage to the earth’s ozone layer, is used. R410A is a pseudoazeotropic refrigerant, so there is little formation of separate vapor and liquid layers, and it is possible to add refrigerant on-site. (2) Less refrigerant charge amount due to use of double phase refrigerant flow system.

  • Page 6: Selection Data

    SELECTION DATA 1.2.1 Specifications (1) Ceiling recessed type (FDT) Model FDTVA302HEN1R FDTVA302HEN1R Model Item FDTA301R FDCVA302HENR Nominal cooling capacity 7.1[3.9~8.0] Nominal heating capacity 8.0[4.0~9.0] Power source 1 Phase, 220/230/240V 50Hz Cooling power consumption 1.90 Running current (Cooling) Power factor (Cooling) Heating power consumption 2.07...

  • Page 7: Ceiling Suspended Type (Fden)

    (2) Ceiling suspended type (FDEN) Model FDENVA302HEN1R FDENVA302HEN1R-SB Model Item FDENA301R FDCVA302HENR Nominal cooling capacity 7.1[3.5~8.0] Nominal heating capacity 8.0[4.0~9.0] Power source 1 Phase, 220/230/240V 50Hz Cooling power consumption 2.06 Running current (Cooling) Power factor (Cooling) Heating power consumption 2.21...

  • Page 8: Satellite Ducted Type (Fdum)

    (3) Satellite ducted type (FDUM) Model FDUMVA302HEN2R FDUMVA302HEN2R Model Item FDUMA302R FDCVA302HENR Nominal cooling capacity 7.1[3.5~8.0] Nominal heating capacity 8.0[4.0~9.0] Power source 1 Phase, 220/230/240V, 50Hz 2.08 Cooling power consumption Running current (Cooling) Power factor (Cooling) Heating power consumption 2.21 Running current (Heating) 10.2...

  • Page 9: Range Of Usage & Limitations

    1.2.2 Range of usage & limitations Model 302 series Item Cooling Indoor unit:18~30˚CD.B Outdoor unit:-15~43˚CD.B Limitations Return air temp Heating Indoor unit:18~30˚CD.B Outdoor unit:-10~24˚CD.B Indoor unit atmosphere (behind ceiling) Dew point temperature: 28˚C or less, relative humidity: 80% or less temperature and humidity Max.

  • Page 10: Exterior Dimensions

    1.2.3 Exterior dimensions (1) Indoor unit (a) Ceiling recessed type (FDT) unit : mm Model FDTA301R Decorative Panel Outside air (Ceiling hole size) 860~890 opening for (Suspension bolts pitch) ducting Control box Exhaust air opening for ducting Liquid piping Air supply Air return grille ø9.52(3/8") VIEW A...
  • Page 11 (b) Ceiling suspended type (FDEN) Model FDENA301R Unit : mm Holes for suspension bolts 290(Suspension bolts pitch) (M8 to M10 4pcs.Not included) × 1272(Suspension bolts pitch) Liquid piping Gas piping 1240 Drain hose piece 1320 connection (VP20) Air supply Indication board Note(1) The slope of drain piping inside the unit is able to take incline of 10mm.
  • Page 12 (C) Satellite ducted type (FDUM) Model FDUMA302R Unit : mm 986 (Suspension bolts pitch) 80.5 Control box Holes of tapping screws ø149 4-ø4 Drain hose piece (Accessory) (Installed at site) ø170 ø170 Liquid piping ø9.52(3/8") Fresh air opening for ducting Exhaust air opening for ducting (Knock out) (Knock out)

  • Page 13: Remote Controller (Optional Parts)

    (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 intend- Remote controller ed for screw holes, and then...
  • Page 14 (b) Wireless remote controller...

  • Page 15: Outdoor Unit

    (3) Outdoor unit Model FDCVA302HENR Unit: mm Holes for drain (ø20×3 pcs.) 2-ø15 25.8 29.8 87.9 Terminal block Liquid piping ø9.52(3/8") 165.5 25.1 (Flare connecting) Gas piping ø15.88 (5/8") (Flare connecting) Required space for maintenance and air flow Minimum allowable space to the obstacles...

  • Page 16: Inside View

    1.2.4 Inside view Outdoor unit Control box 4way valve High pressure switch (63H1) Low pressure sensor (PSL) Electronic expansion valve (EEVH) Solenoid valve (SV1) Electronic expansion valve (EEVC) Compressor Service valve Service valve (Liquid side) (Gas side)

  • Page 17: Exterior Appearance

    1.2.5 Exterior appearance (1) Indoor unit (a) Ceiling recessed type (FDT) Plaster white (b) Ceiling suspended type (FDEN) Light gray Light gray (Vertical louver) Plaster white Plaster white (Horizontal louver) (Side panel) (Front panel) Plaster white (Front panel) Plaster white (Air return grille) (c) Satellite ducted type (FDUM) ……...

  • Page 18: Piping System

    1.2.6 Piping system Model 302 series Outdoor unit Indoor unit Cooling cycle Heating cycle Check joint Thermistor Check joint Gas line Low pressure Strainer Muffler (ø15.88) sensor (LPT) Service valve 4way valve (Flare connecting) Thermistor High pressure switch Heat exchanger Thermistor (63H1) Heat...

  • Page 19: Selection Chart

    1.2.7 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 (a) Capacity compensation coeffcient 1) Cooling...
  • Page 20 (b) Power consumption correction factor 1) Cooling 1.40 1.30 Indoor air 1.20 temperture 24 ℃ 1.10 1.00 Indoor air 0.90 temperture 16 ℃ Indoor air temperture 19 ℃ 0.80 0.70 Indoor air 0.60 temperture 12 ℃ 0.50 0.40 Outdoor air temperature ( DB) 2) Heating 1.50 Outdoor air...
  • Page 21 (c) Sensible heat factor 1.05 1.00 Indoor air Indoor air temperture 12 ℃ 0.95 temperture 16 ℃ 0.90 0.85 Indoor air 0.80 temperture 19 ℃ Indoor air 0.75 temperture 24 ℃ 0.70 0.65 0.60 Outdoor air temperature ( DB)
  • Page 22 (2) Correction of cooling and heating capacity in relation to air flow rate control (fan speed) Coefficient: 1.00 at High, 0.95 at Low (3) Correction of cooling and heating capacity in relation to one way length of refrigerant piping It is necessary to correct the cooling and heating capacity in relation to the one way equivalent piping length between the indoor and outdoor units.
  • Page 23 Piping length limitations Model 302 servies Item Note (1) Values in the table indicate the one way piping length Max. one way piping length between the indoor and Max. vertical height difference Outdoor unit is higher 30m Outdoor unit is lower 15m outdoor units.

  • Page 24: Characteristics Of Fan

    1.2.8 Characteristics of fan (1) Satellite ducted type (FDUM) Model FDUMA302R External static pressure table Unit : Pa Duct specs. 1 spot Standard Square duct closing Air flow ( 4 ) ( 4 ) ( 1 ) /min) Stan High Stan High Stan...

  • Page 25: Outdoor Unit

    Mid Octave Band Frequency (Hz) (2) Outdoor unit Measured based on JIS B 8616 Mike position: at highest noise level in position as below Distance from front side 1m Height Model FDCVA302HENR Noise level 48 dB (A) 1000 2000 4000 8000...

  • Page 30: Outline Of Operation Control By Microcomputer

    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 31: Operation Section

    (b) Wireless remote controller Indication section AIR FLOW indicator ROOM TEMP. indicator Indicates the condition of swing flap. Indicates set temperature. OPERATION MODE indicator FAN SPEED indicator Indicates selected operation with lamp. Indicates the selected blow rate. FILTER indicator ON-TIMER indicator Indicates for 2 seconds when FILTER button Indicated when ON-TIMER is set.

  • Page 32: Operation Control Function By The Indoor Unit Controller

    (2) Operation control function by the indoor unit controller (a) Room temperature control (Differential of thermostat) Heating operation Cooling operation 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 33 (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 34 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 35 (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 36 (k) Condensate pump motor (DM) Control [FDT and FDUM 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 37 (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 38 a) At shipping from factory J1 on PCB OFF ● Input signal to CnT OFF → ON [Edge input] ... Air conditioner ON ● Input signal to CnT ON → OFF [Edge input] ... Air conditioner OFF Note (1) The ON at the * mark indicates ON CnT Input using the remote control switch, etc.

  • Page 39: Operation Control Function By The Wired Remote Controller

    (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 40: Operation Control Function By The Outdoor Unit Controller

    (4) Operation control function by the outdoor unit controller (a) Deciding the compressor speed The indoor unit’s return air temperature ad the set temperature are used to carry out fuzzy calculations, then the required speed is decided. Speed control compensation is then activated to decide the speed. Unit required speed ( i ) Dehumidify and cooling operation Units: rps...
  • Page 41 ii) High dilution operation prevention control If any of the following conditions is established, operation changes to forced heating operation in item iii). Conditions 1 30 minutes have passed since the power was turned ON. 2 SW8-2 (Compressor dilution timer cancel) is ON. iii) Forced heating operation 1 In the heating mode, the speed is set at the starting speed in compressor protective start I, 42 rps, and at this time, the speed is increased by 6 rps every 30 seconds.
  • Page 42 (iii) Outdoor unit fan control 1) Fan tap control during cooling and dehumidifying The fan tap’s speed is changed in accordance with the outdoor unit heat exchanger temperature (Tho-R1) and outdoor air temperature (Tho-A). A Zone B Zone C Zone D Zone a Zone 6th Speed...
  • Page 43 6) Outdoor unit fan control by power transistor cooling fan temperature If all the following conditions are established 3 minutes after the compressor starts, the following control is imple- mented. a) Cooling, Dehumidifying ● Outdoor air temperature Tho-A > = 33°C ●...
  • Page 44 (iii) If any of the following conditions is established, this control ends and the fan runs at the fan tap set in item (d). (iii). 1) The outdoor air temperature (Tho-A) is in Zone A and the outdoor heat exchanger temperature (Tho-R1) is sensed to be 30°C or higher continuously for 40 seconds or longer.
  • Page 45 (ii) Changing the defrosting start temperature Turn the DIP switch (SW3-1) on the outdoor unit’s control PCB ON. 1) Defrosting condition A After defrosting ends, 30 minutes passes cumulatively of the compressor running in a heating operation. 2) Defrosting condition B After defrosting ends, 25 minutes passes cumulatively of the compressor running in a heating operation.
  • Page 46 (iii) Current safe control 1) If the inverter inflow current (CT current) becomes higher than the following set value, the compressor’s speed is lowered. If the current is still above the set value after the speed is lowered, the speed is lowered still further. Set valve (A) Note (1) Values in ( ) show the values during heating.
  • Page 47 2) Low pressure error detection a) If either of the following conditions is satisfied, the compressor is stopped. 1 If the low pressure is 0.079 MPa or lower continuously for 15 seconds after the compressor starts. 2 If the low pressure is 0.15 MPa after 10 minutes have passed since the compressor started and superheating at 30°C continues for 60 seconds.
  • Page 48 ● Outdoor heat exchanger thermistor: -50°C or lower ● Outdoor temperature thermistor: -30°C or lower ● Low pressure sensor: 0 V or lower, or 3.49 V or higher. (ii) Discharge pipe temperature thermistor, suction pipe temperature thermistor After the compressor goes ON, if the following is detected for 5 seconds continuously between 10 minutes and 10 minutes 20 seconds after the compressor goes ON, the compressor stops.
  • Page 49 ( m) Pump down control If the pump down switch SW9 is turned on for 2 seconds during an operation stop and abnormal stop (not including when the thermostat is OFF), pump down operation starts. (It is disabled during indoor unit operation. It is enabled during an abnormal stop of the indoor unit and during power OFF.) ( i ) Control contents 1) Close the liquid side service valve.

  • Page 50: Application Data

    APPLICATION DATA SAFETY PRECAUTIONS • Please read these “Safety Precautions” 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 51: Installation Of Indoor Unit

    1.5.1 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 Model Space above ceiling right side and perfect draining can be assured. FDTA301R Over 290mm 2) With the customer’s consent, select a location with following suitable condi-...
  • Page 52 (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. In cutting an operating on the ceiling, use the unit’s cardboard container for shipment as a reference of the size of opening.
  • Page 53 b) Give the drain piping a descending grade (1/50-1/100) and never Suspension 1.5 m ~ 2 m bolts 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 unit side piping and fix the pipe at a point as close to the unit as Insulation Desceding slope...
  • Page 54 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 55 4) Removing the air return grille 1 Raise up the notched portion of the air return grille and open it. 2 With the air return grille open, remove the air return grille hinge from the decorator panel. 5) Removing the corner panel •...
  • Page 56 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 57: Ceiling Suspended Type (Fden)

    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 a on the corner panel in part A on the decorator panel, then fit the 2 claws and fasten the corner panel screw.
  • Page 58 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. (b) Wireless remote control unit operation distance. 1) Standard signal receiving range. [Condition] Illuminance at the recelver area: 360 lux. (When no llghting fixture is located with in 1 m of indoor unit in an ordinary office) (Top view) Ceiling sur face...
  • Page 59 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 60 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 61 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 62: Satellite Ducted Type (Fdum)

    (3) Satellite ducted 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.
  • Page 63 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...
  • Page 64 1 Supply air duct ● 3-spot with 200 type duct are the standard specifications. Determine the number of spots based on following table. FDUMA302R 2 ~ 3-spot Notes (1) Shield the central supply air port for 2-spot. ● Limit the difference in length between spots at less than 2:1. ●...
  • Page 65 5 Make sure provide an inspection hole on the ceiling. It is indispensable to service electric equipment, motor, functional components and cleaning of heat exchanger. Air conditioner indoor unit Ceiling surface e Return air duct r Supply air port (marketed item) q Return air port (marketed item) w Supply air duct...
  • Page 66 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 port Side fresh air intake port Intake duct (square duct) Fig.1 Fig.2 Outside air intake port midway of return duct 2) Duct connecting position.
  • Page 67 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.
  • Page 68 Forced drain pump operation Setup from a unit side. 1 Turn power on after selecting the emergency operation mode with a setting on the indoor unit control PCB (SW9-3 ON) and disconnecting the CnB connector on the board. Then , the drain pump will start a continuous operation 15 seconds later. (Note : The blower will also start operation in tandem) 2 When a drain test is completed, reinstate the setting to cancel the emergency operation mode (SW9-3 OFF) and plug in the CnB connector on the board.

  • Page 69: Installation Of Wired Remote Controller

    The length of each wire that should be left after a 1.5.2 Installation of wired remote controller sheath is removed is as follows: (1) Selection of installation location Avoid the following locations ength of the 1) Direct sunlight. section where a 2) Close to heating device.

  • Page 70: Installation Of Outdoor Unit

    1.5.3 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 71 Unit:mm Installation Air inlet type Mark Maintenance space Open Open inlet Open Air outlet (c) 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 72: Refrigerant Piping Work

    Select the piping specification to fit the specification of indoor unit and installation location. (a) Decision of piping specification Piping specification Unit : mm Indoor unit Outdoor unit model Gas pipe Liquid pipe FDCVA302HENR ø 15.88 t1.0 ø 9.52 t0.8 Outdoor unit Maximum one way length L=50 m or less Height difference ●...

  • Page 73: Air Tightness Test And Air Purge

    10) Tighten a flare joint securely with a double spanner. a) Do not apply force beyond proper fastening torque in tightening the flare nut. b) Fix both liquid and gas service valves at the valve main bodies as illustrated on the lower, and then fasten them, applying appropriate fastening torque.

  • Page 74: Refrigerant Quantity

    Liquid service valve Hexagonal Head Wrench (M4) Compound pressure gauge Pressure gauge Gauge manifold Open -101kPa (-755mmHg) Handle Hi Gas service valve Liquid/gas operation Charge hose Handle Lo • Open the valve rod until it touches the stopper. You Charge port need not apply lorce to push it further.

  • Page 75: Electrical Wiring

    (6) Electrical wiring Electrical installation work must be performed by an electrical installation service provider qualified by a power provider of the country. Electrical installation work must be executed according to the technical standards and other regulations applicable to electrical installations in the country.
  • Page 76 Remote controller wiring and connection procedure 1) Master-slave settings when using multiple remote controllers ● Up to 2 remote controllers can be connected for each indoor unit (or group). a) There are two methods, one where the remote controller signal line (3-wire) for the slave remote controller is taken from the indoor unit and the other where the signal lines are taken from the master remote controller.

  • Page 77: Setting Functions Using The Wired Remote Controller

    (7) Setting functions using the wired 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.
  • Page 78 (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 79 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 80 (c) Changing the remote control set temperature range 1) It is possible to change the set temperature range using the remote control. a) The upper and lower set temperature limits can be set from the remote control. Upper limit value setting: Effective during heating. The temperature can be set within a range of 20~30ºC. Lower limit value setting: Effective when running in modes other than the heating mode (AUTO, COOL, FAN, DRY): The temperature can be set within a range of 18~26ºC.

  • Page 81: Checking Operation Data

    • If the RESET button is pressed during a setting operation, the display returns to the previously displayed setting screen. However, settings which have not been fixed become invalid, so exercise caution. * If “NO DISP CHANGE” is selected in No. 12, “TEMP RANGE SET” of the remote controller’s functions, of the function setting modes, the remote controller’s display does not change even if the temperature range has been changed.

  • Page 82: Test Run

    Number Data item (Operation mode) SET TEMP RETURN AIR I/U HEAT EXCH 1 (Indoor unit heat exchanger temperature 1) I/U HEAT EXCH 2 (Indoor unit heat exchanger temperature 2) I/U FAN (Indoor unit fan speed) TOTAL I/U RAN (Indoor unit operation hours) OUTDOOR (Outside air temperature) O/U HEAT EXCH 1...

  • Page 83: Maintenance Data

    MAINTENANCE DATA 1.6.1 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 84: Trouble Shooting For Refrigerant Circuit

    (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 87 (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 88: Procedures Of Trouble Diagnosis

    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 89 Parts layout on the indoor unit PCB Model: FDTC series PCB power supply Remote controller Float switch DPI switch connector (SW5) (Secondary side) CNW2 DPI switch Fan motor (SW9) J5,J6 (SW8) J1~J4 (SW7) SW10 Fan motor DPI switch LED2 (SW10) LED1 Heat exchanger thermistor,Return...
  • Page 90 Model: FDT series Fan motor To power supply (CNW7) CNW7 Louver motor CNM3 CNW9 52X8-1 52X7 52X6 52X1 52X2 52X3 PC2 PC1 52X4 Power supply PCB (CNW8) IC12 IC11 Remote LED2 LED1 controller Connector (CNT) 1 2 3 4 J1~J4 (SW7) SW10 Address switch...
  • Page 91 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~J7 SW10 (SW8) CNH CNN1 J1~J4 (SW7) DIP switch (SW9) Address switch Connector J9~J11 (SW2) (CNT)
  • Page 92 Model: FDKN series Heat exchanger thermistor, Return air thermistor Remote controller Heat exchanger thermistor (Thl-R1, Thl-A) (Thl-R2) TB,3 Dip switch (SW5) CNN1 TB,2 J9~J11 SW10 TB,1 (SW10) Dip switch (SW9) J5~J8 CNW1 (SW8) PCB power supply connector J1~J4(SW7) R151 (Primary side) C104 Adress switch IC10...
  • Page 93 Model: FDUM 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 94 (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: Red LED (inspection display), Green LED (CPU. normal display) Error display : No display [Power supply line error] LCD display : No display...
  • Page 95 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 96 Indoor – outdoor communications trouble ” Error display “ WAIT (Initial (when the power is turned on) Indoor unit Outdoor unit If the breaker power supply is turned on again in a short time (within 1 minute), a “ WAIT ”...
  • Page 97 ● Check display when there are 3-wire wrong connections. Wrong connection example Check display Item 1 and 2/N reversing Remote Control: “ WAIT ” Indoor: Run LED keeps flashing. Check LED stays OFF. Outdoor: Run LED keeps flashing. Check LED 2 time flash. Outdoor Unit Indoor Unit 1 and 3 reversing...
  • Page 98 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 99 Error display [Defective indoor unit heat exchanger thermistor] Indoor unit Outdoor unit Air return 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 100 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 101 [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 102 [Fan motor abnormalities] Error display : Indoor unit Outdoor unit Stays OFF Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED S Only case of FDTC Abnormal data check with remote controller After check reset, fan runs on Me.
  • Page 103 S Only case of FDKN 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. unit control PCB DC280V? 3 (Black) is GND.
  • Page 104 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 105: Error Diagnosis Procedures At The Outdoor Unit Side

    Microcomputer printed circuit board can replaced with following procedure. 1) Confirm the parts numbers. Parts No. Applicable Model PCA505A102ZZ FDCVA302HENR 2) Set the model using the model setting switch (SW4). Switch setting table (All switches are set in the OFF position when shipped from the factory.) FDCVA Model...
  • Page 106 Parts layout on the outdoor unit PCB Thermistor (Tho-R1,Tho-D,Tho-S,Tho-A) CNTH Thermistor (Tho-IP) CNPS CNEEV1 CNEEV2 CNFAN Lower pressure High pressure switch sensor Fan motor (63H1) (PSL) Electronic Solenoid valve Crank case heater expansion valve (SV1) 4way valve (EEVC,EEVH) ● Function of DIP switch (SW3, 5, 7, 8) Switch Function Switch...
  • Page 107 Parts layout on the outdoor unit inverter PCB JSW11 Match to the PCB conditions LED1 that existed before replacement. JSW10 Match to the PCB conditions that existed before replacement. Apply the silicone grease supplied with the component uniformly to the surface of the power transistor on the new PCB, then mount it on the PCB. If the grease Notes(1) is not applied, the power transistor may be damaged.
  • Page 109 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 110 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. Are the • Is there a short circuit in the outdoor unit? characteristics of Is there cooling overload •...
  • Page 111 Error display : [Discharge temperature error] Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Is the Discharge Check the unit side. Check the unit side. temperature error? discharge pipe ther- •...
  • Page 112 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 113 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 114 Error display : [Current cut] Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Check the Is the high Is the power Is the service compressor's insulation pressure during operation supply voltage resistance and winding valve fully open?
  • Page 115 Error display : [Over-current error on A/F (active filter) module] Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Is the IC2 cracked or burnt? Does compressor operate? Is voltage within DC 380 ~ 390 V between T26 and T27?
  • Page 116 Error display [Low pressure abnormal or low pressure sensor disconnected.] Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Are the low pressure sensor connector connections Correction (sensor side, PCB side) OK? Is the amount ofrefrigerant proper? Replace the low Is the refrigerant circuit abnormal?
  • Page 117 Error display : [Inverter, fan motor abnormal] Indoor unit Outdoor unit Lights contiously Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Is the power transistor cooling fan fastening OK? Occurs Replace the outdoor Reset the power supply. Does E51 occur? ·Fastening screws.
  • Page 118 Error display : [Low pressure sensor is faulty] Indoor unit Outdoor unit 1 time flash Red LED Stays OFF Red LED Keeps flashing Green LED Keeps flashing Green LED Are the low pressure sensor Correction connector connections (sensor side, board side) OK? Does the pressure (actual Replace the low measurement) match the remote...
  • Page 119 Power transistor module (including drive circuit) check method Is the power transistor module cracked or burnt? Is there a short circuit between the power transistor module ❇ terminals? Compressor operation Is the balance between the compressor current phases good? If there is a 10% or greater difference in the current in different phases.

  • Page 120: Check Method In The Case Of The Failure Display In The Remote Controller

    (5) Check method in the case of the failure display in the remote controller (a) Louver motor does not operate Inspect at the indoor unit side. Does the Is LM wire Is LM wire Defective indoor louver operate at broken? locked? unit PCB power on?

  • Page 121: Check Abnormal Operation Data With The Wired Remote Controller

    (6) Check abnormal operation data with the wired 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 122: Check Display On Wireless Specification Models (Fden · Fdt)

    1.6.4 Check display on wireless specification models (FDEN · FDKN · FDT) (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 123 2. MULTI-TYPE (V MULTI) PACKAGED AIR-CONDITTIONER CONTENTS 2.1 GENERAL INFORMATION................124 2.1.1 Specific features..................124 2.1.2 How to read the model name ..............124 2.1.3 Table of models ..................125 2.1.4 Table of system combinations ..............125 2.2 SELECTION DATA ..................126 2.2.1 Specifications ...................
  • Page 124 2.4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER ....156 2.5 APPLICATION DATA ..................156 2.5.1 Installation of indoor unit ................157 2.5.2 Installation of wired remote controller ............175 2.5.3 Installation of outdoor unit ................ 176 (1) Installation ....................176 (2) Refrigerant piping work................

  • Page 125: General Information

    GENERAL INFORMATION 2.1.1 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 126: Table Of Models

    Capacity Model Ceiling recessed compact type (FDTC) Ceiling recessed type (FDT) Ceiling suspended type (FDEN) Wall mounted type (FDKN) FDCVA302HENR Outdoor unit to be combined (FDC) (3 Horse Power) 2.1.4 Table of system combinations Branch pipe set Outdoor unit Type...

  • Page 127: Selection Data

    SELECTION DATA 2.2.1 Specifications (1) Indoor unit (a) Ceiling recessed compact type (FDTC) Model FDTCA151R Model FDTCA151R Item ( 1) Nominal cooling capacity ( 1) Nominal heating capacity Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 46 Me : 42 Lo: 38 Noise level dB(A) Mild mode Hi: 42 Me : 38 Lo: 35...
  • Page 128 (b) Ceiling recessed type (FDT) Model FDTA151R Model FDTA151R Item ( 1) Nominal cooling capacity ( 1) Nominal heating capacity Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 36 Me : 33 Lo: 32 Noise level dB(A) Mild mode Hi: 33 Me : 32 Lo: 31 Exterior dimensions Unit:270 Height...
  • Page 129 (c) Ceiling suspended type (FDEN) Model FDENA151R Model FDENA151R Item ( 1) Nominal cooling capacity ( 1) Nominal heating capacity Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 42 Me : 39 Lo: 38 Noise level dB(A) Mild mode Hi: 39 Me : 38 Lo: 37 Exterior dimensions 1070 Height...
  • Page 130 (d) Wall mounted type (FDKN) Model FDKNA151R Model FDKNA151R Item ( 1) Nominal cooling capacity ( 1) Nominal heating capacity Power source 1 Phase, 220/230/240V 50Hz Powerful mode Hi: 44 Me: 42 Lo: 40 Noise level dB(A) Mild mode Hi: 42 Me: 40 Lo: 37 Exterior dimensions Height Width...

  • Page 131: Outdoor Unit

    (2) Outdoor unit Models FDCVA302HENR Model FDCVA302HENR Item Power source 1 Phase, 220/230/240V 50Hz ( 1) Nominal cooling capacity 7.1 [3.5~8.0] ( 1) Nominal heating capacity 8.1 [4.0~9.0] Noise level dB(A) Exterior dimensions 880(+88) Height Width Depth Net weight Refrigerant equipment 2YC45DXD 1 compressor type &...

  • Page 132: Operation Chart

    Use the procedure shown in Item (c) to calculate the combined operating characteristics. (a) Operating characteristic of outdoor unit (220/240 V) Model FDCVA302HENR Item Cooling power consumption 2.02 Heating power consumption 2.16...
  • Page 133 Operation Voltage ········ Indoor unit: 220 V, 50 Hz Outdoor unit: 220 V, 50 Hz Operation mode ··········· Cooling and Heating Unit·······························Outdoor unit: FDCVA302HENR × 1 unit Indoor unit: FDTA151R × 1 units, FDTA151R × 1 units Operation characteristics of each unit...

  • Page 134: Range Of Usage & Limitations

    2.2.2 Range of usage & limitations Model FDCVA302HENR Item Cooling Indoor unit : 18~30 D.B Outdoor unit : -15~43 ℃ ℃ Limitations Return air temp Heating Indoor unit : 18~30 ℃ D.B Outdoor unit : -10~24 ℃ Indoor unit atmosphere (behind ceiling) Dew point temperature: 28˚C or less, relative humidity: 80% or less...

  • Page 135: Exterior Dimensions

    2.2.3 Exterior dimensions Indoor unit (a) Ceiling recessed compact type (FDTC) Models FDTCA151R Unit:mm ▫660 (Ceiling hole size) Exhaust air opening for Decorative Panel 530 Suspension bolts pitch ducting Air return Control Air supply grille ▫413 ▫700 Drain hose piece Opening for (Accessory) exit wiring...
  • Page 136 (b) Ceiling recessed type (FDT) Model FDTA151R unit : mm Decorative Panel Outside air (Ceiling hole size) 860~890 opening for (Suspension bolts pitch) ducting Control box Exhaust air opening for ducting Liquid piping Air supply Air return grille ø6.35(1/4") VIEW A Gas piping Drain hose piece ø12.7(1/2")
  • Page 137 (c) Ceiling suspended type (FDEN) Model FDENA151R Unit : mm Holes for suspension bolts (M8 to M10 4pcs.Not included) 290(Suspension bolts pitch) 1022(Suspension bolts pitch) Liquid piping Gas piping Drain hose piece connection(1) 1070 (VP20) Air supply Indication board Note(1) The slope of drain piping inside the unit is able to take incline of 10mm.

  • Page 138: Remote Controller (Optional Parts)

    (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 intend- Remote controller ed for screw holes, and then...
  • Page 139 (b) Wireless remote controller Unit: mm...

  • Page 140: Outdoor Unit

    (3) Outdoor unit Model FDCVA302HENR Unit : mm Holes for drain × ( ø 20 3 pcs.) 2- ø 15 25.8 29.8 87.9 Terminal block Liquid piping ø 9.52(3/8") 165.5 25.1 (Flare connecting) Gas piping ø 15.88 (5/8") (Flare connecting)

  • Page 141: Inside View

    2.2.4 Inside view Outdoor unit Control box 4way valve High pressure switch (63H1) Low pressure sensor (PSL) Electronic expansion valve (EEVH) Solenoid valve (SV1) Electronic expansion valve (EEVC) Compressor Service valve Service valve (Liquid side) (Gas side)

  • Page 142: Exterior Appearance

    2.2.5 Exterior appearance (1) Indoor unit (a) Ceiling recessed compact type (FDTC) Plaster white (b) Ceiling recessed type (FDT) Plaster white (C) Ceiling suspended type (FDEN) Light gray Light gray (Vertical louver) Plaster white Plaster white (Horizontal louver) (Side panel) (Front panel) Plaster white (Front panel)
  • Page 143 (d) Wall mounted type (FDKN) Cool white (2) Outdoor unit Stucco white...

  • Page 144: Piping System

    Notes (1) If used in combination with 151 series indoor units, make the fluid pipe size on the branch piping (branch to indoor unit) ø9.52. (2) A FDEN type strainer only should be used for the indoor unit. Preset point of the protective devices Equipped Parts name Mark FDCVA302HENR unit Thermistor OFF 63C (for protection over- ON 56C...

  • Page 145: Selection Chart

    2.2.7 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 (a) Capacity compensation coeffcient 1) Cooling...
  • Page 146 (b) Power consumption correction factor 1) Cooling 1.40 1.30 Indoor air 1.20 temperture 24 ℃ 1.10 1.00 Indoor air 0.90 temperture 16 ℃ Indoor air temperture 19 ℃ 0.80 0.70 Indoor air 0.60 temperture 12 ℃ 0.50 0.40 Outdoor air temperature ( DB) 2) Heating 1.50 Outdoor air...
  • Page 147 (c) Sensible heat factor 1.05 1.00 Indoor air Indoor air temperture 12 ℃ 0.95 temperture 16 ℃ 0.90 0.85 Indoor air 0.80 temperture 19 ℃ Indoor air 0.75 temperture 24 ℃ 0.70 0.65 0.60 Outdoor air temperature ( DB)
  • Page 148 (2) Correction of cooling and heating capacity in relation to air flow rate control (fan speed) Coefficient: 1.00 at High, 0.95 at Low (3) Correction of cooling and heating capacity in relation to one way length of refrigerant piping It is necessary to correct the cooling and heating capacity in relation to the one way equivalent piping length between the indoor and outdoor units.
  • Page 149 How to obtain the cooling and heating capacity Example : The net cooling capacity of the model FDCVA302HENR with the air flow “High”, the piping length of 15m, the outdoor unit located 5m lower than the indoor unit, indoor wet-bulb temperature at 19.0 °C and outdoor dry-bulb temperature 35 °C is ×...

  • Page 150: Noise Level

    2.2.8 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. Notes (3) The noise levels measured in the field are usually higher than the data because of reflection.

  • Page 151: Outdoor Unit

    Mid Octave Band Frequency (Hz) (2) Outdoor unit Measured based on JIS B 8616 Mike position: at highest noise level in position as below Distance from front side 1m Height Model FDCVA302HENR Noise level 48 dB (A) 1000 2000 4000 8000...

  • Page 157: Outline Of Operation Control By Microcomputer

    OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER Details are the same as in chapter 1.4 see page 29. APPLICATION DATA SAFETY PRECAUTIONS • Please read these “Safety Precautions” 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...

  • Page 158: Installation Of Indoor Unit

    2.5.1 Installation of indoor unit (1) Ceiling recessed compact type (FDTC) (a) 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.
  • Page 159 (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) This unit is designed for installation on a 2 × 2 grid ceiling. If necessary, please detach the T bar temporarily before you install it.
  • Page 160 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 part receives stress. 4) Use VP-25 general-purpose hard PVC pipes for drain piping. 5) Insert the drain hose supplied as an accessory (soft PVC end) to the stepped part of Stepped Drain hose...
  • Page 161 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. q Press the TEST button for three seconds or longer. The display will change from “...
  • Page 162 mark AB) [Figure 4] 7) A panel is hooked on two bolts ( [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.
  • Page 163 (2) Ceiling recessed type (FDT) (a) Selection of installation location Model Space above ceiling (h) 1) Select location where the space above ceiling is larger than those mentioned FDTA151R Over 290mm right side and perfect draining can be assured. 2) With the customer’s consent, select a location with following suitable condi- tions.
  • Page 164 (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. In cutting an operating on the ceiling, use the unit’s cardboard container for shipment as a reference of the size of opening.
  • Page 165 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 166 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 167 4) Removing the air return grille 1 Raise up the notched portion of the air return grille and open it. 2 With the air return grille open, remove the air return grille hinge from the decorator panel. 5) Removing the corner panel •...
  • Page 168 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 supply louver does not operate us- ing 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 169 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 a on the corner panel in part A on the decorator panel, then fit the 2 claws and fasten the corner panel screw.
  • Page 170 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. (b) Wireless remote control unit operation distance. 1) Standard signal receiving range. [Condition] Illuminance at the recelver area: 360 lux. (When no llghting fixture is located with in 1 m of indoor unit in an ordinary office) (Top view) Ceiling sur face...
  • Page 171 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 172 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 173 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 174 Relation between illumination at receiver Caution item for close installation of unit and operating distance multiple units (Top view) (Top view) Receivable range Receivable range 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 175 2) Cautions for left take-out and rear take-out case b) The piping can be taken out from the a) Looking down 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 176: Installation Of Wired Remote Controller

    The length of each wire that should be left after a 2.5.2 Installation of wired remote controller sheath is removed is as follows: (1) Selection of installation location Avoid the following locations ength of the 1) Direct sunlight. section where a 2) Close to heating device.

  • Page 177: Installation Of Outdoor Unit

    2.5.3 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 178 Unit:mm Installation Air inlet type Mark Maintenance space Open Open inlet Open Air outlet (c) 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 179: Refrigerant Piping Work

    b) Limit the protrusion height of front side anchor bolts to 15 mm at the maximum. c) Install the unit firmly so that it does not fall by earthquake and strong wind. d) Make the concrete foundation by referring the above illustration. e) Install the unit in level.
  • Page 180 4) When you need to bend a pipe, bend it to the largest possible radius (R100- R150) permitted. Do not bend a pipe repeatedly in an effort to shape it appropriately. 5) In laying pipes, take care to avoid debris, chips or water from entering the piping system.

  • Page 181: Air Tightness Test And Air Purge

    (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 charge port with the outdoor unit service valves (on both liquid and gas sides) closed tightly to check whether the system has no leaks.

  • Page 182: Drain Piping Work

    (C) Charging refrigerant 1) Since R410A refrigerant must be charged in the liquid phase, you should charge it, keeping the container cylinder upside down or using a refrigerant cylinder equipped with a siphon tube. 2) Charge refrigerant always from the liquid side service port with the service valve shut. When you find it difficult to charge a required amount, fully open the outdoor unit valves on both liquid and gas sides and charge refrigerant from the gas (suction) side service port, while running the unit in the cooling mode.
  • Page 183 Connect a pair bearing a common terminal number with an indoor-outdoor connecting wire. In cabling, fasten cables securely with cable clamps so that no external force may work on terminal connections. Grounding terminals are provided in the control box. Power source,signal line and ground terminal block Grounding terminal Wiring clamp ⁄...
  • Page 184 b) Set the SW1 select switch on the slave remote controller on the slave setting. (It is set on the master setting at the factory.) Note (1) Remote controller sensor activation settings are possible only with the master remote controller. Install the master remote controller in a location where it can sense the room temperature.

  • Page 185: Setting Functions Using The Wired Remote Controller

    (7) Setting functions using the wired 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.
  • Page 186 (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 187 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 188 (c) Changing the remote control set temperature range 1) It is possible to change the set temperature range using the remote control. a) The upper and lower set temperature limits can be set from the remote control. Upper limit value setting: Effective during heating. The temperature can be set within a range of 20~30ºC. Lower limit value setting: Effective when running in modes other than the heating mode (AUTO, COOL, FAN, DRY): The temperature can be set within a range of 18~26ºC.

  • Page 189: Checking Operation Data

    • If the RESET button is pressed during a setting operation, the display returns to the previously displayed setting screen. However, settings which have not been fixed become invalid, so exercise caution. * If “NO DISP CHANGE” is selected in No. 12, “TEMP RANGE SET” of the remote controller’s functions, of the function setting modes, the remote controller’s display does not change even if the temperature range has been changed.

  • Page 190: Test Run

    Number Data item (Operation mode) SET TEMP RETURN AIR I/U HEAT EXCH 1 (Indoor unit heat exchanger temperature 1) I/U HEAT EXCH 2 (Indoor unit heat exchanger temperature 2) I/U FAN (Indoor unit fan speed) TOTAL I/U RAN (Indoor unit operation hours) OUTDOOR (Outside air temperature) O/U HEAT EXCH 1...

  • Page 191: Wireless Kit (Optional Parts)

    3. WIRELESS KIT (OPTIONAL PARTS) FDT series 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 Wireless kit model Model Paint color...
  • Page 192 (4) Wireless remote controller unit: mm (5) Attachment of wireless kit (a) Installation of the receiver 1) Preparation before installation 1 Attachthe cover panel supplied as an accessory onto the indoor unit according to the panel installation. (Refer to 165 page) 2 Remove the air return grille.
  • Page 193 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 ON:Normal movement caused by interference. OFF:Remote ON:Master Receiver master/slave setting...
  • Page 194 (6) Control of a plural number of indoor units with one remote controller Up to 16 indoor units can be connected. Terminal Connect indoor unitÕs X , Y and Z terminal block X Y Z swith 3-core connecting wires (remote controller Indoor unit Indoor unit (16)
  • Page 195 Incomplete connections or fixing could cause heating and fires. ¡ Always use the enclosed parts and designated parts for the installation work parts. Use of parts not designated by Mitsubishi could cause electric shocks or fires.
  • Page 196 Wireless remote Light detection adaptor substrate controller All switches are turned Prevention of malfunction O N : Normal SW1-1 from mixed signals ON when the product is OFF : Remote shipped from the factory. O N : Master Receiver master/slave switching SW1-2 OFF : Slave Ensure to explain the...
  • Page 197 d) Installation with enclosed bracket Use this method when installing onto a gypsum board (7 or 18 mm), etc. 1 Catch the two protrusion of the enclosed bracket onto the fitting as shown above, and temporarily fix with the screws. (The bracket has an up/down and front/back orientation.
  • Page 198 (5) Wireless remote controller operation distance a) When installed on ceiling 1 standard reception distance Conditions Reception section illuminance 300 lux (When there are no lights on the ceiling within 1 m or the reception adaptor in a general office.) 2 Relation of reception section illuminance and reception distance looking from flat plane Conditions Relation of the reception section illuminance and reception distance when the remote controller is...
  • Page 199 PACKAGED AIR-CONDITIONER Air-Conditioning & Refrigeration Systems Headquarters 16-5, 2-chome, Kounan, Minato-ku, Tokyo, 108-8215, Japan Fax : (03) 6716-5926...

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