Fujitsu AOU18RLXFWH Design & Technical Manual Download Page 41 | Manualshive

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4. Refrigerant circuit

4-1. Models: AOU18RLXFWH and AOU24RLXFWH

3-way valve

(small)

3-way valve

(large)

Muffler

Pressure
switch

4-way valve

Strainer

Expansion valve

Strainer

Heat exchanger

(INDOOR)

Heat exchanger

(OUTDOOR)

Sub-accumulator

Compressor

Cooling
Heating

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OUTDOOR UNIT

AOU18, 24RLXFWH

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Summary of Contents for AOU18RLXFWH

Page 1: ...AIR CONDITIONER Wall mounted type DESIGN TECHNICAL MANUAL For Extra Cold Climate Area INDOOR ASU18RLF ASU24RLF OUTDOOR AOU18RLXFWH AOU24RLXFWH DR_AS014EF_04 2017 03 10 ...

Page 2: ...uct specifications and design are subject to change without notice for future improvement For further details please check with our authorized dealer Copyright 2016 2017 Fujitsu General Limited All rights reserved ...

Page 3: ... 1 Air velocity distributions 9 5 2 Airflow 12 6 Operation noise sound pressure 14 6 1 Noise level curve 14 6 2 Sound level check point 15 7 Safety devices 16 8 External input and output 17 8 1 External input 17 8 2 External output 19 9 Remote controller 20 9 1 Wireless remote controller 20 10 Function settings 22 10 1 Function settings by using remote controller 22 11 Accessories 29 12 Optional p...

Page 4: ...8RLXFWH 38 5 2 Model AOU24RLXFWH 39 6 Capacity compensation rate for pipe length and height difference 40 6 1 Models AOU18RLXFWH and AOU24RLXFWH 40 7 Additional charge calculation 41 7 1 Models AOU18RLXFWH and AOU24RLXFWH 41 8 Airflow 42 8 1 Model AOU18RLXFWH 42 8 2 Model AOU24RLXFWH 42 9 Operation noise sound pressure 43 9 1 Noise level curve 43 9 2 Sound level check point 44 10 Electrical charac...

Page 5: ...Part 1 INDOOR UNIT WALL MOUNTED TYPE ASU18RLF ASU24RLF ...

Page 6: ... W D in mm Main 14 7 8 32 3 4 1 1 16 378 832 26 6 Sub 3 5 16 32 3 4 1 2 84 832 13 3 Fin pitch FPI Main 21 Sub 18 Rows Stages Main 2 18 Sub 1 4 Pipe type Copper tube Fin type Aluminum Enclosure Material Polystyrene Color White Approximate color of Munsell N 9 25 Dimensions H W D Net in 12 5 8 39 5 16 9 mm 320 998 228 Gross in 12 9 16 42 15 16 16 7 8 mm 319 1 090 429 Weight Net lb kg 31 14 Gross 40 ...

Page 7: ...ø3 16 5 65 holes 39 3 8 1 000 Unit size Piping inlet for tapping screw 11 16 x 7 16 18 x 11 hole 11 16 x 7 16 18 x 11 hole 4 13 16 122 6 3 4 172 2 15 16 75 15 1 4 387 6 11 16 170 5 8 16 15 3 4 400 Unit center 4 15 16 126 5 1 4 133 5 1 8 130 4 7 16 113 2 15 16 75 9 9 16 243 9 228 12 5 8 320 20 1 2 520 23 1 4 590 28 3 8 721 ø3 1 8 80 hole Piping inlet 1 3 16 30 1 3 16 30 5 7 8 149 7 3 4 197 10 11 16...

Page 8: ...ment Provide sufficient installation space for product safety Unit in mm 3 63 or more 4 80 or more 3 52 or more 3 53 or more 4 80 or more Outline of unit 5 120 or more 60 1 500 or more 71 1 800 or more 4 WALL MOUNTED ASU18 24RLF ...

Page 9: ...3 Wiring diagrams 3 1 Models ASU18RLF and ASU24RLF 5 WALL MOUNTED ASU18 24RLF ...

Page 10: ...5 21 43 12 83 1 26 95 14 23 9 86 1 30 15 87 9 93 1 32 17 47 10 82 1 34 18 02 11 67 1 35 19 11 11 63 1 36 20 16 12 39 1 38 104 13 58 9 59 1 45 15 12 9 66 1 47 16 65 10 54 1 49 17 16 11 36 1 50 18 22 11 33 1 51 19 24 12 08 1 53 115 12 39 9 14 1 62 13 78 9 18 1 65 15 22 10 03 1 67 15 66 10 82 1 68 16 62 10 78 1 70 17 57 11 50 1 72 AFR m3 h 920 Indoor temperature CDB 17 8 21 1 23 9 26 7 29 4 32 2 CWB ...

Page 11: ...3 11 50 1 92 20 54 12 42 1 93 21 77 12 35 1 95 23 00 13 17 1 97 115 12 35 9 21 1 56 13 75 9 28 1 58 15 18 10 13 1 61 15 63 10 92 1 61 16 58 10 88 1 63 17 50 11 60 1 65 AFR m3 h 1 120 Indoor temperature CDB 17 8 21 1 23 9 26 7 29 4 32 2 CWB 12 2 15 6 17 2 19 4 21 7 22 8 Outdoor temperature CDB TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP TC SHC IP kW kW kW kW kW kW 20 6 5 60 3 36 0 30 6 24 3 3...

Page 12: ...65 2 97 8 43 3 03 8 22 3 09 15 0 10 0 8 57 2 48 8 37 2 53 8 16 2 58 7 96 2 63 7 75 2 68 Model ASU24RLF AFR CFM 677 Indoor temperature FDB 60 65 70 72 75 Outdoor temperature FDB FWB TC IP TC IP TC IP TC IP TC IP kBtu kW kBtu kW kBtu kW kBtu kW kBtu kW 15 17 20 71 3 09 20 24 3 16 19 73 3 22 19 23 3 28 18 75 3 34 5 7 23 66 3 30 23 12 3 36 22 54 3 43 21 97 3 50 21 43 3 56 5 3 26 47 3 45 25 86 3 52 25 ...

Page 13: ... 7 8 ft 7 14 20 27 7 3 0 3 7 ft 7 2 3 1 2 0 5 Top view Vertical airflow direction louver Up Horizontal airflow direction louver Left Right 3 2 1 0 1 2 3 m m Unit ft s m s 0 1 2 3 4 5 6 7 8 ft 7 14 20 27 10 7 3 0 3 7 10 ft 2 0 5 2 0 5 3 1 3 1 7 2 7 2 Side view Vertical airflow direction louver Up Horizontal airflow direction louver Center 3 2 1 0 m m Unit ft s m s 0 1 2 3 4 5 6 7 8 ft 7 14 20 27 10...

Page 14: ...ide view Vertical airflow direction louver Down Horizontal airflow direction louver Center 3 2 1 0 m m Unit ft s m s 0 1 2 3 4 5 6 7 8 ft 7 14 20 27 10 7 3 0 ft 7 2 3 1 2 0 5 10 WALL MOUNTED ASU18 24RLF ...

Page 15: ...irection louver Left Right 3 2 1 0 1 2 3 m m Unit ft s m s 0 1 2 3 4 5 6 7 8 ft 7 14 20 27 10 7 3 0 3 7 10 ft 2 0 5 2 0 5 3 1 3 1 7 2 7 2 Side view Vertical airflow direction louver Up Horizontal airflow direction louver Center 3 2 1 0 m m Unit ft s m s 0 1 2 3 4 5 6 7 8 ft 7 14 20 27 10 7 3 0 ft 7 2 3 1 2 0 5 Side view Vertical airflow direction louver Down Horizontal airflow direction louver Cen...

Page 16: ...256 CFM 541 MED m3 h 740 l s 206 CFM 435 LOW m3 h 620 l s 172 CFM 365 QUIET m3 h 520 l s 144 CFM 306 Heating Fan speed Airflow HIGH m3 h 920 l s 256 CFM 541 MED m3 h 740 l s 206 CFM 435 LOW m3 h 620 l s 172 CFM 365 QUIET m3 h 540 l s 150 CFM 318 12 WALL MOUNTED ASU18 24RLF ...

Page 17: ...M 659 MED m3 h 900 l s 250 CFM 530 LOW m3 h 740 l s 206 CFM 435 QUIET m3 h 620 l s 172 CFM 365 Heating Fan speed Airflow HIGH m3 h 1 150 l s 319 CFM 677 MED m3 h 900 l s 250 CFM 530 LOW m3 h 740 l s 206 CFM 435 QUIET m3 h 620 l s 172 CFM 365 13 WALL MOUNTED ASU18 24RLF ...

Page 18: ...2 µbar Octave band center frequency Hz 80 70 60 50 40 30 20 10 0 63 125 250 500 1 000 2 000 4 000 8 000 HIGH QUIET Model ASU24RLF Cooling NC 65 NC 60 NC 55 NC 50 NC 45 NC 40 NC 35 NC 30 NC 25 NC 20 NC 15 Octave band sound pressure level dB 0 dB 0 0002 µbar Octave band center frequency Hz 80 70 60 50 40 30 20 10 0 63 125 250 500 1 000 2 000 4 000 8 000 HIGH QUIET Heating NC 65 NC 60 NC 55 NC 50 NC ...

Page 19: ... level check point 2 ft 7 5 8 in 0 8 m 3 ft 3 3 8 in 1 m Microphone Microphone NOTE Detailed shape of the actual indoor unit might be slightly different from the one illustrated above 15 WALL MOUNTED ASU18 24RLF ...

Page 20: ...Current fuse 250 V 3 A Fan motor protection Thermistor protection Activate More than 185 F 85 C Fan motor speed down Reset Less than 185 F 85 C Fan motor speed recover Power IC thermal shutdown protection Activate 302 27 F 150 15 C Fan motor stop Reset Less than 275 F 135 C Fan motor restart PCB Printed Circuit Board 16 WALL MOUNTED ASU18 24RLF ...

Page 21: ...cable is 492 ft 150 m The wire connection should be separate from the power cable line Control input Operation Stop or Forced stop The air conditioner can be remotely operated by means of the following on site work Unit operation is started at the following contents by adding the contact input of a commercial on off switch to a connector on the external control PCB and turning it on Unit operation...

Page 22: ... 33 ft 10 m Use non polar relays and switches When function setting is Operation Stop mode Operation Stop On Off Input signal Indoor unit When function setting is Forced stop mode Remote controller On On On Input signal Indoor unit Command Remote control operation invalidity On Off Operation Stop Forced stop Normal Optional part Part name Model name Exterior External connect kit UTY XWZX External ...

Page 23: ...output Circuit diagram example Locally purchased Indoor unit control PCB Connected unit Example Display Example Relay unit Relay power supply DC 24 V 1 2 Signal V Connector 33 ft 10 m Make the distance from the PCB to the connected unit within 33 ft 10 m Relay spec Max DC 24 V 10 mA to less than 500 mA On Off Operation Stop Indoor unit Output signal Optional part Part name Model name Exterior Exte...

Page 24: ...ing batteries g Timer set button Sets the current time and on off time h TEST RUN button Only used for the initial test in the unit installation i CLOCK ADJUST button Used for adjusting the clock j TIMER MODE button Selects the timer mode off timer on timer program timer and timer reset k SLEEP button Pressed to select sleep timer l ECONOMY button m MIN HEAT button n SET TEMP temperature button Se...

Page 25: ...ight oz g 3 85 without batteries NOTE Actual number of buttons might be different from the figure above Holder Unit in mm Front view Side view Bottom view 2 3 8 60 4 1 3 16 30 2 Ø1 8 3 5 1 8 x 1 4 3 5 x 6 5 hole hole 1 1 16 1 3 3 4 95 6 1 16 154 7 25 5 26 2 Size H W D in mm 6 1 16 2 3 8 1 1 16 154 7 60 4 26 2 Weight oz g 10 28 21 WALL MOUNTED ASU18 24RLF ...

Page 26: ...the remote controller custom code Use the following steps to select the custom code of the remote controller Note that the air con ditioner cannot receive a custom code if the air conditioner has not been set for the custom code The custom codes that are set through this process are applicable only to the signal in the func tion setting For details on how to set the custom codes through the normal...

Page 27: ...tween the left and right digits press the MODE but ton 4 Press the TIMER MODE button and START STOP button in the order listed to confirm the settings 5 Press the RESET button to cancel the function setting mode 6 After completing the function setting be sure to disconnect the power supply and then reconnect it Function number Setting value CAUTION After disconnecting the power supply wait 30 seco...

Page 28: ...46 External input control 7 48 Room temperature sensor switching Aux 8 92 93 Room temperature control for wired remote controller sensor 9 94 Fixed operation mode switching 10 95 Heat insulation condition building insulation 1 Filter sign Select appropriate intervals for displaying the filter sign on the indoor unit according to the esti mated amount of dust in the air of the room If the indicatio...

Page 29: ... C 09 8 F 4 0 C 10 1 F 0 5 C Less cooling More heating 11 2 F 1 0 C 12 3 F 1 5 C 13 4 F 2 0 C 14 5 F 2 5 C 15 6 F 3 0 C 16 7 F 3 5 C 17 8 F 4 0 C 3 Auto restart Enables or disables automatic restart after a power interruption Function number Setting value Setting description Factory setting 40 00 Enable 01 Disable NOTE Auto restart is an emergency function such as for power outage etc Do not attem...

Page 30: ...etting 46 00 Operation Stop mode 01 Setting prohibited 02 Forced stop mode 7 Room temperature sensor switching Aux To use the temperature sensor on the wired remote controller only change the setting to Wired remote controller 01 This function will only work if the function setting 42 is set at Both 01 When the setting value is set to Both 00 more suitable control of the room temperature is pos si...

Page 31: ...eating only or cooling only Function number Setting value Setting description Factory setting 94 00 Heat pump 01 Heating only 02 Cooling only 10 Heat insulation condition building insulation Heat insulation conditions differ according to the installed environment Standard insulation 00 allows system to rapidly respond to the cooling or heating load changes High insulation 01 is when the heat insul...

Page 32: ...play to the air conditioner custom code 4 Press the MODE button again to return to the clock indicator The custom code will be changed NOTES If no button is pressed within 30 seconds after the custom code is displayed the system re turns to the original clock indicator In this case start again from step 1 The air conditioner custom code is set to prior to shipment To change the custom code contact...

Page 33: ...l 1 Drain hose insulation 1 Installation manual 1 Cloth tape 1 Wall hook bracket 1 Tapping screw large M4 25 mm 8 Remote controller 1 Tapping screw small M3 12 mm 2 Battery 2 Air cleaning filter 2 Remote controller holder 1 Air cleaning filter frame 2 29 WALL MOUNTED ASU18 24RLF ...

Page 34: ...ed by detecting the temperature accurately with built in thermo sensor Wire type Polar 3 wire Simple remote controller UTY RSNUM Compact remote controller concentrates on the basic functions such as Start Stop fan control temperature setting and operation mode Wire type Polar 3 wire NOTE Available functions may differ by the remote controller For details refer to the operation manual 12 2 Others E...

Page 35: ...Part 2 OUTDOOR UNIT SINGLE TYPE AOU18RLXFWH AOU24RLXFWH ...

Page 36: ...0 Gross in 39 3 8 41 5 16 17 1 2 mm 1 000 1 050 445 Weight Net lb kg 135 61 Gross 152 69 Connection pipe Size Liquid in mm Ø 3 8 Ø 9 52 Gas Ø 5 8 Ø 15 88 Method Flare Pre charge length ft m 66 20 Max length 164 50 Max height difference 98 30 Operation range Cooling F C 5 to 115 20 to 46 Heating 15 to 75 26 to 24 Drain hose Material LDPE Size mm Ø 13 0 I D Ø 16 0 to Ø 16 7 O D NOTES Specifications ...

Page 37: ...4RLXFWH Unit in mm Top view Front view Side view Bottom view 3 77 35 3 8 900 32 3 4 830 17 3 8 440 7 8 21 15 3 4 400 13 330 7 3 4 196 5 3 4 147 6 3 4 170 14 5 8 370 25 5 8 650 Airflow 1 1 4 31 1 2 12 3 7 8 99 3 8 9 33 OUTDOOR UNIT AOU18 24RLXFWH ...

Page 38: ...s 4 100 or more 10 250 or more 12 300 or more 4 100 or more When there are obstacles at the front only When there are obstacles at the front and rear 24 600 or more 24 600 or more 4 100 or more When there is an obstruction in the upper space Unit in mm When there are obstacles at the rear and above When there are obstacles at the rear sides and above 12 300 or more Max 19 500 24 600 or more 40 1 0...

Page 39: ...250 or more or more 60 1 500 or more 10 250 or more When there are obstacles at the front and rear 20 500 or more 60 1 500 or more 10 250 or more When there is an obstruction in the upper space Unit in mm When there are obstacles at the rear and above 60 1 500 or more 20 500 or more 10 250 or more 10 250 or more Max 11 300 60 1 500 or more 35 OUTDOOR UNIT AOU18 24RLXFWH ...

Page 40: ...e to obtain better opera tion efficiency CAUTION Do not install the outdoor unit in two stage where the drain water could freeze Otherwise the drainage from the upper unit may form ice and cause a malfunction of the lower unit When the outdoor temperature is 32 F 0 C or less do not use the accessory drain pipe and drain cap If the drain pipe and drain cap are used the drain water in the pipe may f...

Page 41: ...WH and AOU24RLXFWH 3 way valve small 3 way valve large Muffler Pressure switch 4 way valve Strainer Expansion valve Strainer Heat exchanger INDOOR Heat exchanger OUTDOOR Sub accumulator Compressor Cooling Heating 37 OUTDOOR UNIT AOU18 24RLXFWH ...

Page 42: ...5 Wiring diagrams 5 1 Model AOU18RLXFWH 38 OUTDOOR UNIT AOU18 24RLXFWH ...

Page 43: ...5 2 Model AOU24RLXFWH 39 OUTDOOR UNIT AOU18 24RLXFWH ...

Page 44: ...0 963 0 0 0 998 1 000 1 000 0 976 0 979 0 976 0 971 Indoor unit is lower than outdoor unit 2 5 16 0 998 1 000 1 000 0 976 0 979 0 976 0 971 7 5 24 1 000 1 000 0 976 0 979 0 976 0 971 10 32 1 000 0 976 0 979 0 976 0 971 20 65 0 976 0 979 0 976 0 971 30 98 0 979 0 976 0 971 HEATING Pipe length m 5 7 5 10 20 30 40 50 ft 16 24 32 65 98 131 164 Height difference H Indoor unit is higher than outdoor uni...

Page 45: ...FWH Refrigerant type R410A Refrigerant amount lb oz 4 lb 10 1 oz g 2 100 Refrigerant charge Total pipe length ft 66 or less 98 131 164 Max 0 43 oz ft 40 g m m 20 or less 30 40 50 Max Additional charge oz 0 14 1 28 2 42 3 g 0 400 800 1 200 41 OUTDOOR UNIT AOU18 24RLXFWH ...

Page 46: ...del AOU18RLXFWH Cooling m3 h 2 530 l s 703 CFM 1 489 Heating m3 h 2 530 l s 703 CFM 1 489 8 2 Model AOU24RLXFWH Cooling m3 h 3 400 l s 944 CFM 2 001 Heating m3 h 3 600 l s 1 000 CFM 2 119 42 OUTDOOR UNIT AOU18 24RLXFWH ...

Page 47: ...20 10 0 63 125 250 500 1 000 2 000 4 000 8 000 NC 65 NC 60 NC 55 NC 50 NC 45 NC 40 NC 35 NC 30 NC 25 NC 20 NC 15 Model AOU24RLXFWH Cooling Octave band sound pressure level dB 0 dB 0 0002 µbar Octave band center frequency Hz 80 70 60 50 40 30 20 10 0 63 125 250 500 1 000 2 000 4 000 8 000 NC 65 NC 60 NC 55 NC 50 NC 45 NC 40 NC 35 NC 30 NC 25 NC 20 NC 15 Heating Octave band sound pressure level dB 0...

Page 48: ...check point 39 3 8 in 1 m Microphone Microphone Rear Airflow Rear view Side view NOTE Detailed shape of the actual outdoor unit might be slightly different from the one illustrat ed above 44 OUTDOOR UNIT AOU18 24RLXFWH ...

Page 49: ...gth ft m 167 51 1 Minimum Circuit Ampacity Calculation based on UL1995 2 Selected sample based on Japan Electrotechnical Standards and Codes Committee E0005 As the regulations of wire size and circuit breaker differ in each country or region select appropri ate devices complied to the regional standard 3 Maximum Circuit Breaker 4 Limit voltage drop to less than 2 If voltage drop is 2 or more incre...

Page 50: ... C Fan motor stop Reset 248 27 F 120 15 C Fan motor restart Compressor protection Terminal protection program Compressor temp Activate 226 F 108 C Compressor stop Reset 176 F 80 C Compressor restart Thermal protection program Discharge temp COOL or DRY mode Activate 230 F 110 C Compressor stop Reset After 7 minutes Compressor restart High pressure protection Pressure switch Activate 4 2 0 1 MPa Co...

Page 51: ...s Part name Exterior Q ty Part name Exterior Q ty Installation manual 1 Adapter 12 7 1 2 15 88 5 8 mm in Only for 18 model 1 Drain pipe 1 Adapter 6 35 1 4 9 52 3 8 mm in 1 Drain cap 5 47 OUTDOOR UNIT AOU18 24RLXFWH ...

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