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Fujitsu GENERAL ASHG18KMTA Design & Technical Manual
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Fujitsu GENERAL ASHG18KMTA Design & Technical Manual

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AIR CONDITIONER
Wall mounted type
DESIGN & TECHNICAL MANUAL
INDOOR
OUTDOOR
ASHG18KMTA
ASHG24KMTA
AOHG18KMTA
AOHG24KMTA
DR_AS093EG_03
2020.01.27

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Summary of Contents for Fujitsu GENERAL ASHG18KMTA

  • Page 1 AIR CONDITIONER Wall mounted type DESIGN & TECHNICAL MANUAL INDOOR ASHG18KMTA ASHG24KMTA OUTDOOR AOHG18KMTA AOHG24KMTA DR_AS093EG_03 2020.01.27...
  • Page 2 • Product specifications and design are subject to change without notice for future improvement. • For further details, please check with our authorized dealer. Trademarks ™ FGLair is trademark of Fujitsu General Limited in the United States, other countries or both. ™ Google Play is trademark of Google Inc. ®...

  • Page 3: Table Of Contents

    CONTENTS Part 1. INDOOR UNIT................1 1. Specifications....................2 2. Dimensions....................4 2-1. Models: ASHG18KMTA and ASHG24KMTA ..............4 3. Wiring diagrams ....................6 3-1. Models: ASHG18KMTA and ASHG24KMTA ..............6 4. Capacity table....................7 4-1. Cooling capacity.......................7 4-2. Heating capacity ......................8 5. Fan performance ...................9 5-1. Air velocity distributions....................9 5-2.
  • Page 4 CONTENTS (continued) Part 2. OUTDOOR UNIT..............37 1. Specifications....................38 2. Dimensions....................39 2-1. Model: AOHG18KMTA....................39 2-2. Model: AOHG24KMTA....................40 3. Installation space ..................41 3-1. Models: AOHG18KMTA and AOHG24KMTA ..............41 4. Refrigerant circuit ..................44 4-1. Model: AOHG18KMTA....................44 4-2. Model: AOHG24KMTA....................45 5. Wiring diagrams ..................46 5-1.

  • Page 5: Part 1. Indoor Unit

    Part 1. INDOOR UNIT WALL MOUNTED TYPE: ASHG18KMTA ASHG24KMTA...

  • Page 6: Specifications

    1. Specifications Wall mounted Type Inverter heat pump Model name ASHG18KMTA ASHG24KMTA Power supply 230 V ~ 50 Hz Power supply intake Outdoor unit Available voltage range 198—264 V 5.20 7.10 Rated Btu/h 17,700 24,200 Cooling 0.90—6.00 0.90—8.30 Min.—Max. Btu/h 3,100—20,500 3,100—28,300 Capacity...
  • Page 7 Specifications for ErP Lot10 Model name ASHG18KMTA ASHG24KMTA Cooling Energy efficiency class Heating (Average) Cooling 5.2 (35°C) 7.1 (35°C) Pdesign Heating (Average) 4.8 (-10°C) 7.1 (-10°C) SEER Cooling 7.77 7.28 kWh/kWh SCOP Heating (Average) 4.56 4.18 Annual energy consumption kWh/a QHE (Average) 1,472 2,372...

  • Page 8: Dimensions

    2. Dimensions 2-1. Models: ASHG18KMTA and ASHG24KMTA Unit: mm Outline of indoor unit for pipe inlet Ø65 for pipe inlet Ø65 - 4 - 2-1. Models: ASHG18KMTA and ASHG24KMTA 2. Dimensions...
  • Page 9 ¢ Installation space requirement Provide sufficient installation space for product safety. Unit: mm 40 or more Wall hook bracket 70 or more Outline of the indoor unit 160 or more 117 or more 1,500 or more The flare connection part should be installed outdoors.

  • Page 10: Wiring Diagrams

    3. Wiring diagrams 3-1. Models: ASHG18KMTA and ASHG24KMTA - 6 - 3-1. Models: ASHG18KMTA and ASHG24KMTA 3. Wiring diagrams...

  • Page 11: Capacity Table

    4. Capacity table Capacity tables show each of following values calculated based on the outdoor temperature and the indoor temperature, under given Airflow Rate (AFR): For cooling capacity: Total Capacity (TC), Sensible Heat Capacity (SHC), and Input Power (IP) For heating capacity: Total Capacity (TC) and Input Power (IP) 4-1.

  • Page 12: Heating Capacity

    4-2. Heating capacity NOTE: Values mentioned in the table are calculated based on the maximum capacity. ¢ Model: ASHG18KMTA 1,020 Indoor temperature °CDB °CWB 5.17 1.92 5.04 1.96 4.90 2.00 4.76 2.04 4.63 2.08 4.49 2.12 4.36 2.16 6.23 1.89 6.06 1.93 5.90...

  • Page 13: Fan Performance

    5. Fan performance 5-1. Air velocity distributions ¢ Model: ASHG18KMTA Fan speed Operation mode Measuring conditions HIGH Unit: m/s Top view Vertical airflow direction louver: Up Horizontal airflow direction louver: Center Unit: m/s Top view Vertical airflow direction louver: Up Horizontal airflow direction louver: Left &...
  • Page 14 ¢ Model: ASHG24KMTA Fan speed Operation mode Measuring conditions HIGH Unit: m/s Top view Vertical airflow direction louver: Up Horizontal airflow direction louver: Center Unit: m/s Top view Vertical airflow direction louver: Up Horizontal airflow direction louver: Left & Right Unit: m/s Side view Vertical airflow direction louver: Up...

  • Page 15: Airflow

    5-2. Airflow ¢ Model: ASHG18KMTA  Cooling Fan speed Airflow HIGH QUIET  Heating Fan speed Airflow 1,020 HIGH QUIET - 11 - 5-2. Airflow 5. Fan performance...
  • Page 16 ¢ Model: ASHG24KMTA  Cooling Fan speed Airflow 1,170 HIGH QUIET  Heating Fan speed Airflow 1,170 HIGH QUIET - 12 - 5-2. Airflow 5. Fan performance...

  • Page 17: Operation Noise (Sound Pressure)

    6. Operation noise (sound pressure) 6-1. Noise level curve ¢ Model: ASHG18KMTA  Cooling  Heating NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50 NC-50 HIGH HIGH NC-45 NC-45 NC-40 NC-40 NC-35 NC-35 NC-30 NC-30 NC-25 NC-25 QUIET NC-20 NC-20 QUIET NC-15 NC-15 1,000...

  • Page 18: Sound Level Check Point

    6-2. Sound level check point Microphone Microphone NOTE: Detailed shape of the actual indoor unit might be slightly different from the one illustrated above. - 14 - 6-2. Sound level check point 6. Operation noise (sound pressure)

  • Page 19: Safety Devices

    7. Safety devices Model Type of Protection form protection ASHG18KMTA ASHG24KMTA Circuit protection Current fuse (PCB*) 250 V, 3.15 A 125 ±24°C Activate Thermal Fan motor stop Fan motor protector protection 100 ±25°C program Reset Fan motor restart *PCB: Printed Circuit Board - 15 - 7.

  • Page 20: External Input And Output

    8. External input and output External input and output PCB SW301 SW302 Rotary switch CN314 CN313 CN312 CN311 CN310 CN308 To CN6 on Indoor unit PCB External input External output Connector Input select Input signal Operation/Stop CN313/ Edge/Pulse Dry contact/ CN314 Forced stop —...

  • Page 21: External Input

    8-1. External input With using external input function, some functions on this product can be controlled from an external device. • “Operation/Stop” mode or "Forced stop" mode can be selected with function setting of indoor unit. • A twisted pair cable should be used. Maximum length of cable is 150 m. •...

  • Page 22: External Output

    8-2. External output Use an external output cable with appropriate external dimension, depending on the number of ca- bles to be installed. ¢ External input and output PCB • A twisted pair cable (22AWG) should be used. Maximum length of cable is 25 m. •...

  • Page 23: Combination Of External Input And Output

    8-3. Combination of external input and output By combining the function setting of the indoor unit and rotary switch setting of the External input and output PCB, you can select various combinations of functions. Combination examples of external input and output are as follows: External input External input Mode...

  • Page 24: Details Of Function

    8-4. Details of function ¢ Control input function • When function setting is “Operation/Stop” mode 1 – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting input and output PCB Off → On Operation External input and 46-00...
  • Page 25 • When function setting is “Forced stop” mode – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting input and output PCB Off → On Forced stop External input and 46-02 CN313 output PCB On →...
  • Page 26 • When function setting is “Operation/Stop” mode 2 – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting input and output PCB Off → On Operation External input and 46-03 CN313 Stop (R.C. output PCB On →...
  • Page 27 • Forced thermostat off function Rotary SW on External External input Input signal Command input and output PCB Off → On Thermostat off External input and output PCB CN313 On → Off Normal operation Input Compressor Room temp. Set temp. - 23 - 8-4.
  • Page 28 ¢ Control output function • Operation/Stop status Rotary SW on External Output External output Command input and output PCB signal Off → On Operation External input and output PCB CN310 On → Off Stop The output is low when the unit is stopped. Operation Indoor unit Stop...

  • Page 29: Group Connection

    9. Group connection NOTE: Group control cannot be used together with Wireless LAN adapter. Installation procedure for group control system: A number of indoor units can be operated at the same time using a single remote controller. NOTE: When different type of indoor units (such as wall mounted type and cassette type, cassette type and duct type, or other combinations) are connected using group control system, some functions may no longer be available.

  • Page 30: Remote Controller

    10. Remote controller 10-1. Wireless remote controller ¢ Overview Signal transmitter MODE button FAN button 10°C HEAT button SWING button ECONOMY button TEMP. button OUTDOOR UNIT SET button LOW NOISE button POWERFUL button WEEKLY button TIMER SETTING button Start/Stop button ON/OFF button SEND button SLEEP button...
  • Page 31 ¢ Specifications  Controller Unit: mm Top view Front view Side view Size (H × W × D) 205 × 61 × 17 Weight 125 (without batteries)  Holder Unit: mm 48.5 Ø 3.5 (Hole) Hole 26.2 69.3 Front View Side View Bottom View Size (H ×...

  • Page 32: Function Settings

    11. Function settings To adjust the functions of this product according to the installation environment, various types of function settings are available. NOTE: Incorrect settings can cause a product malfunction. 11-1. Function settings by using remote controller Some function settings can be changed on the remote controller. After confirming the setting proce- dure and the content of each function setting, select appropriate functions for your installation envi- ronment.
  • Page 33 NOTES: • The air conditioner custom code is set to prior to shipment. • If you do not know the air conditioner custom code setting, try each of the custom codes ( → → → ) until you find the code that operates the air conditioner. ¢...
  • Page 34 2) Filter sign Select appropriate intervals for displaying the filter sign on the indoor unit according to the estimated amount of dust in the air of the room. If the indication is not required, select "No indication" (03). Function number Setting value Setting description Factory setting...
  • Page 35 4) Room temperature control for wired remote controller sensor Depending on the installed environment, correction of the wire remote temperature sensor may be required. Select the appropriate control setting according to the installed environment. To change this setting, set Function 42 to Both “01”. Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
  • Page 36 7) Remote controller custom code (Only for wireless remote controller) The indoor unit custom code can be changed. Select the appropriate custom code. Function number Setting value Setting description Factory setting ♦ 8) External input control "Operation/Stop" mode or "Forced stop" mode can be selected. Function number Setting value Setting description...

  • Page 37: 11-2.Custom Code Setting For Wireless Remote Controller

    11-2. Custom code setting for wireless remote controller To interconnect the air conditioner and the wireless remote controller, assignment of the custom code for the wireless remote controller is required. NOTE: Air conditioner cannot receive a signal if the air conditioner has not been set for the custom code.

  • Page 38: Accessories

    12. Accessories 12-1. Models: ASHG18KMTA and ASHG24KMTA Part name Exterior Q’ty Part name Exterior Q’ty Operating manual Tapping screw (large) Installation manual Tapping screw (small) Remote controller Battery Remote controller Filter holder holder Cloth tape Air cleaning filters Wall hook bracket - 34 - 12-1.

  • Page 39: Optional Parts

    13. Optional parts 13-1. Controllers Exterior Part name Model name Summary Easy finger touch operation with LCD panel. Backlit LCD enables easy operation in a dark room. Wired remote UTY-RNRGZ* Wire type: Non-polar 2-wire controller Optional communication kit is necessary for installation. High visibility and easy operation.

  • Page 40: 13-2.Others

    13-2. Others Exterior Part name Model name Summary Required when external device is External connected. UTY-XWZXZ5 connect kit Use to connect with external devices External input and air conditioner PCB. UTY-XCSXZ2 and output PCB Optional External connect kit is necessary for installation. Communication Use to connect Non-polar 2-core wired UTY-TWRXZ2...

  • Page 41: Part 2. Outdoor Unit

    Part 2. OUTDOOR UNIT SINGLE TYPE: AOHG18KMTA AOHG24KMTA...

  • Page 42: Specifications

    1. Specifications Type Inverter heat pump Model name AOHG18KMTA AOHG24KMTA Power supply 230 V ~ 50 Hz Power supply intake Outdoor unit Available voltage range 198—264 V Starting current Cooling 2,350 3,240 Airflow rate Heating 2,100 2,820 Type × Q'ty Propeller fan ×...

  • Page 43: Dimensions

    2. Dimensions 2-1. Model: AOHG18KMTA Unit: mm 4-M10 hole Pitch of bolts for installation Top view Side view Front view Side view Airflow Drain port Ø42 Bottom view Side view (Valve part) - 39 - 2-1. Model: AOHG18KMTA 2. Dimensions...

  • Page 44: Model: Aohg24Kmta

    2-2. Model: AOHG24KMTA Unit: mm 4-M10 hole Pitch of bolts for installation Top view Side view Front view Side view Airflow Drain port Ø42 Bottom view Side view (Valve part) - 40 - 2-2. Model: AOHG24KMTA 2. Dimensions...

  • Page 45: Installation Space

    3. Installation space 3-1. Models: AOHG18KMTA and AOHG24KMTA ¢ Space requirement Provide sufficient installation space for product safety. CAUTION Keep the space shown in the installation examples. If the installation is not performed accordingly, it could cause a short circuit and result in a lack of operating performance.
  • Page 46  Multiple outdoor unit installation • Provide at least 250 mm of space between the outdoor units if multiple units are installed. • When routing the piping from the side of an outdoor unit, provide space for piping. • No more than 3 units must be installed side by side. When 3 units or more are arranged in a line, provide the space as shown in the following ex- ample “When an obstruction in the upper space:”.
  • Page 47  Outdoor units installation in multi-row Unit: mm Single parallel unit arrangement Multiple parallel unit arrangement 100 or more 200 or more 1,000 or more 2,000 or more 200 or more 400 or more 500 or more 1,000 or more 200 or more 250 or more 1,000 or more...

  • Page 48: Refrigerant Circuit

    4. Refrigerant circuit 4-1. Model: AOHG18KMTA Heat exchanger 3-way ( INDOOR ) valve 2-way valve Muffler Muffler 4-way valve Strainer Acccumlator Expansion valve Heat exchanger Strainer ( OUTDOOR ) Cooling Heating :Thermistor (Discharge temperature) :Thermistor (Outdoor temperature) :Thermistor (Heat exchanger out temperature) :Thermistor (Room temperature) :Thermistor (Pipe temperature) - 44 -...

  • Page 49: Model: Aohg24Kmta

    4-2. Model: AOHG24KMTA Heat exchanger 3-way (INDOOR) valve 2-way Muffler valve Muffler Pressure switch Muffler 4-way valve Strainer Expansion valve Accumulator Heat exchanger Strainer (OUTDOOR) Cooling Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat exchanger out temperature) : Thermistor (Room temperature) : Thermistor (Pipe temperature) - 45 -...

  • Page 50: Wiring Diagrams

    5. Wiring diagrams 5-1. Model: AOHG18KMTA 5-2. Model: AOHG24KMTA - 46 - 5-1. Model: AOHG18KMTA 5. Wiring diagrams...

  • Page 51: Capacity Compensation Rate For Pipe Length And Height Difference

    6. Capacity compensation rate for pipe length and height difference Height difference H Indoor unit is higher than outdoor unit Indoor unit is lower than outdoor unit Outdoor unit Indoor unit Outdoor unit Indoor unit Connection pipe Connection pipe 6-1. Model: AOHG18KMTA NOTE: Values mentioned in the table are calculated based on the maximum capacity.

  • Page 52: Model: Aohg24Kmta

    6-2. Model: AOHG24KMTA NOTE: Values mentioned in the table are calculated based on the maximum capacity. Pipe length (m) COOLING — — — — — 0.893 0.877 — — — — 0.917 0.900 0.885 Indoor unit is higher than — —...

  • Page 53: Additional Charge Calculation

    7. Additional charge calculation 7-1. Model: AOHG18KMTA Refrigerant type Refrigerant amount 1,020 ¢ Refrigerant charge Total pipe length 15 or less 25 (Max.) 20 g/m Additional charge 7-2. Model: AOHG24KMTA Refrigerant type Refrigerant amount 1,320 ¢ Refrigerant charge Total pipe length 15 or less 30 (Max.) 20 g/m...

  • Page 54: Airflow

    8. Airflow 8-1. Model: AOHG18KMTA  Cooling 2,350 1,383  Heating 2,100 1,236 8-2. Model: AOHG24KMTA  Cooling 3,240 1,907  Heating 2,820 1,660 - 50 - 8-1. Model: AOHG18KMTA 8. Airflow...

  • Page 55: Operation Noise (Sound Pressure)

    9. Operation noise (sound pressure) 9-1. Noise level curve ¢ Model: AOHG18KMTA  Cooling  Heating NC-65 NC-65 NC-60 NC-60 NC-55 NC-55 NC-50 NC-50 NC-45 NC-45 NC-40 NC-40 NC-35 NC-35 NC-30 NC-30 NC-25 NC-25 NC-20 NC-20 NC-15 NC-15 1,000 2,000 4,000 8,000 1,000...

  • Page 56: Sound Level Check Point

    9-2. Sound level check point Rear Microphone Microphone Airflow Side view Rear view NOTE: Detailed shape of the actual outdoor unit might be slightly different from the one illustrated above. - 52 - 9-2. Sound level check point 9. Operation noise (sound pressure)

  • Page 57: Electrical Characteristics

    10. Electrical characteristics Model name AOHG18KMTA AOHG24KMTA Voltage 230 ~ Power supply Frequency Max operating current *1 13.5 16.0 Starting current Circuit breaker current Wiring Power cable spec. Cross-sectional area 1.5—2.5 Connection cable *3 Limited wiring length *1: Maximum operating current is the total current of the indoor unit and the outdoor unit. *2: Selected sample based on Japan Electrotechnical Standards and Codes Committee E0005.

  • Page 58: Safety Devices

    11. Safety devices Model Type of Protection form protection AOHG18KMTA AOHG24KMTA 250 V, 25 A Circuit Current fuse (PCB*) 250 V 5 A protection 250 V, 3.15 A 100±15°C Activate Fan motor stop Fan motor Thermal protection program protection 95±10°C Reset Fan motor restart 110°C...

  • Page 59: Accessories

    12. Accessories 12-1. Models: AOHG18KMTA and AOHG24KMTA Part name Exterior Q’ty Part name Exterior Q’ty Installation manual Drain pipe - 55 - 12-1. Models: AOHG18KMTA and AOHG24KMTA 12. Accessories...

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