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DOMUSA DUAL CLIMA 9HT Service Manual

Aerothermal heat pump
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DUAL CLIMA HT
Aerothermal Heat Pump
EN| SERVICE MANUAL

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Summary of Contents for DOMUSA DUAL CLIMA 9HT

  • Page 1 DUAL CLIMA HT Aerothermal Heat Pump EN| SERVICE MANUAL...
  • Page 2 Start-up of these heat pumps as well as any maintenance operations must only be carried out by the Authorised Technical Assistance Services of DOMUSA TEKNIK. Incorrect installation of these heat pumps could result in damage to people, animals or property, for which the manufacturer accepts no responsibility.
  • Page 3 REVISIONS Version Description of changes Date First edition 09 June 2023 DUAL CLIMA HT...

  • Page 4: Table Of Contents

    ..........................84 PERATING MODES 8.2 S ..........................85 TART STOP CYCLE 8.3 D ........................... 85 EFROST FUNCTION 8.3.1 A ......................86 CTIVATION CONDITIONS 8.3.2 D ......................87 EACTIVATION CONDITIONS 8.3.3 A ....................87 DJUSTMENT OF DEFROST SETTINGS DUAL CLIMA HT...
  • Page 5 HE HEAT PUMP DOES NOT WORK PROPERLY EVEN THOUGH IT DOES NOT GIVE ANY ERROR CODE 12.2 HMI ................157 REMOTE CONTROL DOES NOT SHOW ANY SYMBOL 12.3 P ........................158 ERFORMANCE CURVES 12.4 C ................... 160 HECKING THE QUANTITY OF REFRIGERANT DUAL CLIMA HT...

  • Page 6: Safety Warnings

    1 SAFETY WARNINGS 1.1 Warnings about the installation The DUAL CLIMA HT heat pump must be installed by personnel authorised by the Ministry of Industry, in compliance with the applicable laws and regulations. The precautions detailed here cover very important issues. Please be sure to follow them to the letter: The installation and operating instruction book supplied with the heat pump must be kept in •...

  • Page 7: Heat Pump Refrigerant Warnings

    1.2 Heat pump refrigerant warnings The Dual Clima HT contains R290 refrigerant gas, which is highly flammable. In normal conditions of use, there is no risk of explosion and the refrigerant is non-toxic. However, in case of leakage, some aspects that could cause damages to third-parties must be taken into account, as the refrigerant could create a flammable atmosphere and give rise to fire or explosion.

  • Page 8: Transport, Storage And Handling Warnings

    1.3 Transport, storage and handling warnings For the correct transport and handling of the unit, carefully follow the following safety warnings: The DUAL CLIMA HT heat pump must be transported, handled and stored in vertical • position. Placing the appliance on its side can cause the oil inside the compressor to spill out, causing premature compressor breakage on start-up.

  • Page 9: Freeze Protection Warnings

    1.5 Freeze protection warnings The DUAL CLIMA HT is an appliance for installation on the outside of the building and it will consequently be exposed to frost during periods of extremely cold weather. It is therefore of utmost importance that these types of machines are protected against frost. If the water inside the heat pump freezes it can cause the pump to break, stopping its functioning and making costly repairs necessary.

  • Page 10: Technical Characteristics Table

    Min. working pressure: (refrigerant circuit) Refrigerant R290 Refrigerant amount 1.05 1.45 1.45 Protection degree IPX4 Working temperature range °C -25/45 (Heating) Working temperature range °C 10/45 (Cooling) Sound pressure level (1m) dB(A) Dimensions: 1115/415/898 1115/415/1320 (Height/Width/Depth) Net weight DUAL CLIMA HT...

  • Page 11: List Of Components And Spare Parts

    3 LIST OF COMPONENTS AND SPARE PARTS 3.1 Dual Clima 6HT Exterior Covers Description REAR DUAL CLIMA HT MANOMETER SIDE DOOR TOP COVER FRONT DOOR LEFT SIDE PANEL TOP FAN GRILLE CENTRAL FAN GRILLE DUAL CLIMA HT...
  • Page 12 Ventilation circuit Description SEPARATOR EXTERNAL EVAPORATOR (6-9KW) DUAL CLIMA 6-9-12 HT FAN SUPPORT FAN MOTOR FAN BLADES Ø550x124 PCB ELECTRICAL BOX COVER PCB ELECTRICAL BOX IPM ELECTRICAL BOX IPM MODULE SP.KYZ1.5-4.1 2P IPM ELECTRICAL BOX COVER DUAL CLIMA HT...

  • Page 13: Water Circuit

    PARA 15/7 IPWM1 WILO PUMP TEMPERATURE SENSOR NTC 5K (2m) PCB BUTTERFLY VALVE M-H ½ HH ½ SAFETY VALVE WITHOUT T.M. SEN-HZG1WA FLOW SENSOR TEMPERATURE SENSOR NTC 5K (2m) TERMINAL STRIP DRAIN VALVE ASSEMBLY EXPANSION VESSEL 5 L DUAL CLIMA HT...
  • Page 14 GMCC 6kW COMPRESSOR TEMPERATURE SENSOR NTC 50K (1.2m) SHF-9 4-WAY VALVE AMBIENT TEMPERATURE SENSOR SUPPORT AMBIENT TEMPERATURE SENSOR NTC 5K (2m) BALANCING TANK 0.5 L WELDABLE GAS FILLER VALVE ELECTRONIC EXPANSION VALVE DFP1.65C HIGH PRESSURE SENSOR LOW PRESSURE SENSOR DUAL CLIMA HT...

  • Page 15: Electric Box

    INDUCTANCE 6 PFC R1650FNKZ TERMINAL STRIP BRIDGING STRIP SMALL CABLE DUCT POWER SUPPLY STRIP LARGE CABLE DUCT DUAL CLIMA HT POWER BOARD REMOTE CONTROL 5K ACS RESISTOR 5K PCB RESISTOR CONDENSATION OUTLET 5x20 5A CERAMIC FUSE TEMPERATURE SENSOR NTC 5K (10m)

  • Page 16: Dual Clima 9Ht

    3.2 Dual Clima 9HT Exterior Covers Description REAR DUAL CLIMA HT MANOMETER SIDE DOOR TOP COVER FRONT DOOR LEFT SIDE PANEL TOP FAN GRILLE CENTRAL FAN GRILLE DUAL CLIMA HT...
  • Page 17 Ventilation circuit Description SEPARATOR EXTERNAL EVAPORATOR (6-9KW) DUAL CLIMA 6-9-12 HT FAN SUPPORT FAN MOTOR FAN BLADES Ø550x124 PCB ELECTRICAL BOX COVER PCB ELECTRICAL BOX IPM ELECTRICAL BOX IPM MODULE SP.KYZ1.5-4.1 3P IPM ELECTRICAL BOX COVER DUAL CLIMA HT...
  • Page 18 PARA 15/7 IPWM1 WILO PUMP TEMPERATURE SENSOR NTC 5K (2m) PCB BUTTERFLY VALVE M-H ½ HH ½ SAFETY VALVE WITHOUT T.M. SEN-HZG1WA FLOW SENSOR TEMPERATURE SENSOR NTC 5K (2m) TERMINAL STRIP DRAIN VALVE ASSEMBLY EXPANSION VESSEL 5 L DUAL CLIMA HT...
  • Page 19 GMCC 9kW COMPRESSOR TEMPERATURE SENSOR NTC 50K (1.2m) SHF-9 4-WAY VALVE AMBIENT TEMPERATURE SENSOR SUPPORT AMBIENT TEMPERATURE SENSOR NTC 5K (2m) BALANCING TANK 0.5 L WELDABLE GAS FILLER VALVE ELECTRONIC EXPANSION VALVE DFP(Q)1.8C HIGH PRESSURE SENSOR LOW PRESSURE SENSOR DUAL CLIMA HT...
  • Page 20 INDUCTANCE 9-12 PFC EI86 TERMINAL STRIP BRIDGING STRIP SMALL CABLE DUCT POWER SUPPLY STRIP LARGE CABLE DUCT DUAL CLIMA HT POWER BOARD REMOTE CONTROL 5K ACS RESISTOR 5K PCB RESISTOR CONDENSATION OUTLET 5x20 5A CERAMIC FUSE TEMPERATURE SENSOR NTC 5K (10m)

  • Page 21: Dual Clima 12Ht

    3.3 Dual Clima 12HT Exterior Covers Description REAR DUAL CLIMA HT MANOMETER SIDE DOOR TOP COVER FRONT DOOR LEFT SIDE PANEL TOP FAN GRILLE CENTRAL FAN GRILLE DUAL CLIMA HT...
  • Page 22 Ventilation circuit Description SEPARATOR EXTERNAL EVAPORATOR (12KW) DUAL CLIMA 6-9-12 HT FAN SUPPORT FAN MOTOR FAN BLADES Ø550x124 PCB ELECTRICAL BOX COVER PCB ELECTRICAL BOX IPM ELECTRICAL BOX IPM MODULE SP.KYZ1.5-4.1 3P IPM ELECTRICAL BOX COVER DUAL CLIMA HT...
  • Page 23 PARA 25-130/8-75/IPWM1 WILO PUMP TEMPERATURE SENSOR NTC 5K (2m) PCB BUTTERFLY VALVE M-H ½ HH ½ SAFETY VALVE WITHOUT T.M. SEN-HZG1WA FLOW SENSOR TEMPERATURE SENSOR NTC 5K (2m) TERMINAL STRIP DRAIN VALVE ASSEMBLY EXPANSION VESSEL 5 L DUAL CLIMA HT...
  • Page 24 12HT COMPRESSOR INSULATING SLEEVE GMCC 12kW COMPRESSOR SUCTION ACCUMULATOR_KFR50WLB-16 ELECTRONIC EXPANSION VALVE DFP(Q)1.8C HIGH PRESSURE SENSOR LOW PRESSURE SENSOR BALANCING TANK 0.5 L WELDABLE GAS FILLER VALVE AMBIENT TEMPERATURE SENSOR NTC 5K (2m) AMBIENT TEMPERATURE SENSOR SUPPORT SHF-9 4-WAY VALVE DUAL CLIMA HT...
  • Page 25 INDUCTANCE 9-12 PFC EI86 TERMINAL STRIP BRIDGING STRIP SMALL CABLE DUCT POWER SUPPLY STRIP LARGE CABLE DUCT DUAL CLIMA HT POWER BOARD 5K ACS RESISTOR 5K PCB RESISTOR CONDENSATION OUTLET 5x20 5A CERAMIC FUSE TEMPERATURE SENSOR NTC 5K (10m) REMOTE CONTROL...

  • Page 26: Dual Clima 16Ht

    3.4 Dual Clima 16HT Exterior Covers Description REAR SIDE DOOR FRONT DOOR CENTRAL FAN GRILLE LEFT SIDE PANEL TOP COVER DUAL CLIMA HT...
  • Page 27 SEPARATOR IPM ELECTRICAL BOX PCB ELECTRICAL BOX EMI 16 FILTER IPM S.HPD120C.1 MODULE IPM ELECTRICAL BOX COVER DUAL CLIMA HT MANOMETER PCB ELECTRICAL BOX COVER ELECTRICAL BOX SUPPORT ACOUSTIC BOX REAR COVER ACOUSTIC BOX TOP COVER PLATE HEAT EXCHANGER SUPPORT...
  • Page 28 SEN-HZ40WA FLOW SENSOR TEMPERATURE SENSOR NTC 5K (2m) PCB TEMPERATURE SENSOR NTC 5K (2m) TERMINAL STRIP PARA 25-180/9-87/IPWM1 WILO PUMP HH ½ SAFETY VALVE WITHOUT T.M. M-H 1/2 BUTTERFLY VALVE DUAL CLIMA 16 HT PLATE HEAT EXCHANGER DUAL CLIMA HT...
  • Page 29 TEMPERATURE SENSOR NTC 50K (1.2m) SHF-20 4-WAY VALVE WELDABLE GAS FILLER VALVE BALANCING TANK 1 L HIGH PRESSURE SENSOR LOW PRESSURE SENSOR DPF(B)2.2C ELECTRONIC EXPANSION VALVE SUCTION ACCUMULATOR_KFR50WLB-16 AMBIENT TEMPERATURE SENSOR NTC 5K (2m) AMBIENT TEMPERATURE SENSOR SUPPORT DUAL CLIMA HT...
  • Page 30 Electric box Description TERMINAL STRIP SMALL CABLE DUCT LARGE CABLE DUCT POWER SUPPLY STRIP BRIDGING STRIP DUAL CLIMA HT POWER BOARD REMOTE CONTROL 5K ACS RESISTOR 5K PCB RESISTOR TEMPERATURE SENSOR NTC 5K (10m) 5x20 5A CERAMIC FUSE CONDENSATION OUTLET...

  • Page 31: Dual Clima 16Htt

    3.5 Dual Clima 16HTT Exterior Covers Description REAR SIDE DOOR FRONT DOOR CENTRAL FAN GRILLE LEFT SIDE PANEL TOP COVER DUAL CLIMA HT...
  • Page 32 IPM ELECTRICAL BOX PCB ELECTRICAL BOX PCB ELECTRICAL BOX COVER IPM S.HPD260C.1 MODULE EMI 16T FILTER IPM ELECTRICAL BOX COVER DUAL CLIMA HT MANOMETER ELECTRICAL BOX SUPPORT INDUCTANCE BOX ACOUSTIC BOX REAR COVER 16T R25027 INDUCTANCE ACOUSTIC BOX TOP COVER...
  • Page 33 TEMPERATURE SENSOR NTC 5K (2m) TERMINAL STRIP PARA 25-180/9-87/IPWM1 WILO PUMP HH ½ SAFETY VALVE WITHOUT T.M. BUTTERFLY VALVE M-H ½ DUAL CLIMA 16 HT PLATE HEAT EXCHANGER TEMPERATURE SENSOR NTC 5K (2m) PCB DRAIN VALVE ASSEMBLY DUAL CLIMA HT...
  • Page 34 TEMPERATURE SENSOR NTC 50K (1.2m) SHF-20 4-WAY VALVE WELDABLE GAS FILLER VALVE BALANCING TANK 1 L HIGH PRESSURE SENSOR LOW PRESSURE SENSOR DPF(B)2.2C ELECTRONIC EXPANSION VALVE SUCTION ACCUMULATOR_KFR50WLB-16 AMBIENT TEMPERATURE SENSOR NTC 5K (2m) AMBIENT TEMPERATURE SENSOR SUPPORT DUAL CLIMA HT...
  • Page 35 TERMINAL STRIP IPM FAN MOTOR (T) MODULE SMALL CABLE DUCT LARGE CABLE DUCT POWER SUPPLY STRIP BRIDGING STRIP DUAL CLIMA HT POWER BOARD REMOTE CONTROL 5K ACS RESISTOR 5K PCB RESISTOR CONDENSATION OUTLET 5x20 5A CERAMIC FUSE TEMPERATURE SENSOR NTC 5K (10m)

  • Page 36: Characteristics Of The Components

    LOW PRESSURE SENSOR HIGH PRESSURE SENSOR PLATE HEAT EXCHANGER. DISCHARGE TEMPERATURE SENSOR EVAPORATOR TEMPERATURE PROBE EXTERNAL TEMPERATURE PROBE SUCTION TEMPERATURE PROBE RETURN TEMPERATURE PROBE FLOW TEMPERATURE PROBE INTERNAL HEAT EXCHANGER TEMPERATURE PROBE EXPANSION VESSEL FLOW METER CIRCULATING PUMP DUAL CLIMA HT...

  • Page 37: Electronic Expansion Valve

    Dual Clima Dual Clima Dual Clima Dual Clima Dual Clima 12HT 16HT 16HTT Model: 0.5L Model: 1L Safety buffer (separates the gaseous refrigerant) at the expansion valve inlet to prevent the gaseous refrigerant from entering the expansion valve. DUAL CLIMA HT...

  • Page 38: 4-Way Valve

    4.4 Suction accumulator Dual Clima Dual Clima Dual Clima Dual Clima Dual Clima 12HT 16HT 16HTT Model: KFR50WLB-16 Safety buffer (separates liquid refrigerant) at the compressor inlet to prevent the liquid refrigerant from entering the compressor. DUAL CLIMA HT...

  • Page 39: Compressor

    Each model has its specific compressor for R290 refrigerant gas; each model has the following quantity of refrigerant gas: - Dual Clima 6HT: 1.0 Kg - Dual Clima 9HT: 1.05 Kg - Dual Clima 12HT: 1.2 Kg - Dual Clima 16HT/16HTT: 1.45 Kg DUAL CLIMA HT...

  • Page 40: Low Pressure Sensor

    Dual Clima Dual Clima Dual Clima 12HT 16HT 16HTT Model: YCQB05H10 Pressure sensor to manage the regulation of the thermodynamic cycle of the heat pump. It also ensures the safety of the high pressure area of the circuit. DUAL CLIMA HT...

  • Page 41: Fan

    4.9 Plate heat exchanger. Dual Clima Dual Clima Dual Clima Dual Clima Dual Clima 12HT 16HT 16HTT Model: ACH43-32AH-F Model: CBH62-30AH-F Model: FCBH62-38AH-F Heat exchanger to transfer energy between the refrigerant and the primary water. DUAL CLIMA HT...

  • Page 42: Discharge Temperature Probe

    Model: NTC 50K (1.2m) Measures the compressor discharge temperature. 4.11 Evaporator temperature probe Dual Clima Dual Clima Dual Clima Dual Clima Dual Clima 12HT 16HT 16HTT Model: NTC 5K (2m) PCB Measures the temperature of the refrigerant in the evaporator. DUAL CLIMA HT...

  • Page 43: External Temperature Probe

    Model: NTC 5K (2m) Measures the exterior air temperature. 4.13 Suction temperature probe Dual Clima Dual Clima Dual Clima Dual Clima Dual Clima 12HT 16HT 16HTT Model: NTC 5K (2m) Measures the refrigerant temperature at the compressor inlet. DUAL CLIMA HT...

  • Page 44: Return Temperature Probe

    Measures the return temperature of the primary water. 4.15 Flow temperature probe Dual Clima Dual Clima Dual Clima Dual Clima Dual Clima 12HT 16HT 16HTT Model: NTC 5K (2m) Measures the flow temperature of the primary water. DUAL CLIMA HT...

  • Page 45: Internal Heat Exchanger Temperature Probe

    4.17 Expansion vessel Dual Clima Dual Clima Dual Clima Dual Clima Dual Clima 12HT 16HT 16HTT Model: LQ-PZG-C-5L G3/8" 5 litre primary expansion vessel: - Maximum working temperature: 99 ºC. - Pre-load pressure: 1.5 ± 0.2 bar. DUAL CLIMA HT...

  • Page 46: Flow Meter

    Dual Clima Dual Clima Dual Clima Dual Clima Dual Clima 12HT 16HT 16HTT Model: PARA 15 - 130/7 IPWM Model: PARA 25 - 130/8 IPWM Model: PARA 25 - 180/9 IPWM Model: PARA 25 - 130/9 IPWM DUAL CLIMA HT...

  • Page 47: Wiring Diagrams And Electronic Components

    C1: Heat pump circulation pump. G2: 3-way Heat/Cold valve. C2: Heating/cooling backup circulation pump. SG1: Contact 1 for SG Ready function. C3: DHW backup circulation pump. SG2: Contact 2 for SG Ready function. TAF: Cooling room thermostat. DUAL CLIMA HT...

  • Page 48: History Of Wiring Diagrams

    • All neutrals are changed to blue. • The inductance cables are changed to red. • The colours of the compressor wiring are changed (W,V,U). • In three-phase models, phase with red cable to grey cable. DUAL CLIMA HT...

  • Page 49: Dual Clima 6Ht

    5.3 Dual Clima 6HT DUAL CLIMA HT...
  • Page 50 DUAL CLIMA HT...
  • Page 51 DUAL CLIMA HT...

  • Page 52: Dual Clima 9Ht

    5.4 Dual Clima 9HT DUAL CLIMA HT...
  • Page 53 DUAL CLIMA HT...
  • Page 54 DUAL CLIMA HT...

  • Page 55: Dual Clima 12Ht

    5.5 Dual Clima 12HT DUAL CLIMA HT...
  • Page 56 DUAL CLIMA HT...
  • Page 57 DUAL CLIMA HT...

  • Page 58: Dual Clima 16Ht

    5.6 Dual Clima 16HT DUAL CLIMA HT...
  • Page 59 DUAL CLIMA HT...
  • Page 60 DUAL CLIMA HT...

  • Page 61: Dual Clima 16Htt

    5.7 Dual Clima 16HTT DUAL CLIMA HT...
  • Page 62 DUAL CLIMA HT...
  • Page 63 DUAL CLIMA HT...

  • Page 64: Switches Table

    Dual Clima 6HT OFF OFF ON OFF OFF OFF OFF Dual Clima 9HT OFF OFF ON OFF OFF OFF OFF Dual Clima 12HT ON OFF ON OFF OFF OFF Dual Clima 16HT ON OFF ON Dual Clima 16HTT DUAL CLIMA HT...

  • Page 65: Main Electronic Components

    5.9 Main electronic components 5.9.1 Dual Clima 6HT electronic components 1: IPM card. 5: Bridge strip. 2: Power card. (PCB) 6: Inductance. 3: Component connection strip. 4: Power supply strip. DUAL CLIMA HT...

  • Page 66: Dual Clima 9Ht Electronic Components

    5.9.2 Dual Clima 9HT electronic components 1: IPM card. 5: Bridge strip. 2: Power card. (PCB) 6: Inductance. 3: Component connection strip. 4: Power supply strip. DUAL CLIMA HT...

  • Page 67: Dual Clima 12Ht Electronic Components

    5.9.3 Dual Clima 12HT electronic components 1: IPM card. 5: Bridge strip. 2: Power card. (PCB) 6: Inductance. 3: Component connection strip. 4: Power supply strip. DUAL CLIMA HT...

  • Page 68: Dual Clima 16Ht Electronic Components

    5.9.4 Dual Clima 16HT electronic components 1: IPM card. 5: Bridge strip. 2: Power card. (PCB) 6: EMI filter. 3: Component connection strip. 4: Power supply strip. DUAL CLIMA HT...

  • Page 69: Dual Clima 16Ht Electronic Components

    5.9.5 Dual Clima 16HT electronic components 1: IPM card. 5: Bridge strip. 2: Power card. (PCB) 6: EMI filter. 3: Component connection strip. 7: Inductance. 4: Power supply strip. 8: Fan motor module. DUAL CLIMA HT...

  • Page 70: Characteristics Of Main Electronic Components

    0 Vac 230 Vac OUT9 G1, DHW/heating diverter valve Heating: 0 Vac ACS: 230 Vac OUT10 G2, Hot/Cold diverter valve Cold: 0 Vac Hot: 230 Vac OUT11 Reserved 0 Vac 230 Vac OUT12 Reserved 0 Vac 230 Vac DUAL CLIMA HT...

  • Page 71: Connection Function

    Main communication port RS485 COMM2 Slave communication port 1 RS485 COMM3 Slave communication port 2 RS485 COMM4 Slave communication port 3 RS485 Heat Thermostat Cold Thermostat Reserved Flusostat (Reserved) Reserved Reserved Reserved CN18 Reserved CN57 Software programming input DUAL CLIMA HT...

  • Page 72: Led Indicators

    When the OUT5 output is activated, the LED will be on. OUT4 LED indicator. LED9 When the OUT4 output is activated, the LED will be on. OUT3 LED indicator. LED10 When the OUT3 output is activated, the LED will be on. DUAL CLIMA HT...
  • Page 73 Heat pump status indicator. If the pump is stopped or in standby DIS1 If the compressor is running, the compressor frequency will be displayed. If there is an error in the heat pump, the error code will be displayed. DUAL CLIMA HT...

  • Page 74: Ipm Characteristics

    230 Vac OUT4 Reserved 0 Vac 230 Vac OUT5 Reserved 0 Vac 230 Vac OUT6 Reserved 0 Vac 230 Vac OUT7 Reserved 0 Vac 230 Vac OUT8 Reserved 0 Vac 230 Vac OUT9 Reserved 0 Vac 230 Vac DUAL CLIMA HT...
  • Page 75 Connection Function Characteristics Reserved Reserved Reserved Reserved T1-PH Reserved Reserved Reserved Reserved T2-PL Reserved DC-FAN DC fan connection Communication port. RS485-1 Communication with power board RS485-2 Communication port. Reserved. EXV-1 Reserved EXV-2 Reserved DUAL CLIMA HT...
  • Page 76 Earth (Not connected) Compressor power supply, W terminal 0~12Vdc 160~180Vdc Compressor power supply, V terminal 0~12Vdc 160~180Vdc Compressor power supply, U terminal 0~12Vdc 160~180Vdc Communication port. RS485-1 Communication with power board DC-FAN1 DC1 Fan connection DC-FAN2 DC2 Fan connection DUAL CLIMA HT...
  • Page 77 160~180Vdc Compressor power supply, V terminal 0~12Vdc 160~180Vdc Compressor power supply, U terminal 0~12Vdc 160~180Vdc Connection 1 to the inductor 485~593Vdc Connection 2 to the inductor 485~593Vdc Communication port. RS485 Communication with power board and fan board. DUAL CLIMA HT...

  • Page 78: Start Up Procedure

    Sludge filter: Degasifier: Safety valve downstream from separator: Anti-freeze drain valve kit: If it does not have a drain valve kit: Antifreeze fluid: Level of anti-freeze protection……………………ºC Anti-freeze: Anti-freeze activation temperature (P25): ……………………ºC Anti-freeze interval (P21): ……………………ºC DUAL CLIMA HT...
  • Page 79 Dual Clima 6HT: 14 l/min Dual Clima 9HT: 20 l/min Dual Clima 12HT: 30 l/min Dual Clima 16HT/16HTT: 38 l/min If these parameters are not met, the installation of a back-up circulation pump (in series) connected to connection C1 is required. DUAL CLIMA HT...
  • Page 80 Cooling ON recommended setpoint (P204): ……....……ºC DHW ON recommended setpoint (P206): ……....……ºC Heating ON mandatory setpoint (P203): ……....……ºC Cooling ON mandatory setpoint (P205): ……....……ºC DHW ON mandatory setpoint (P207): ……....……ºC Night mode (P17): □ Yes □ No DUAL CLIMA HT...
  • Page 81 The circuit breaker correlates to the consumption current plus 25%: □ Yes □ No It has a differential switch: □ Yes □ No The differential correlates to the intensity of consumption plus 40%: □ Yes □ No L-N: …….……….…….V N-Earth: ….…..…….V Voltage check: L-Earth: ……..………V DUAL CLIMA HT...

  • Page 82: Maintenance

    3-way valves are working properly: Degasifier installed in the heat pump flow: Hydraulic system pressure: ………………………….. bar Level of anti-freeze protection ………………………….. ºC , Anti-freeze valve: □ Yes □ No Heat pump flow rate: C10 ………………………….. l/min DUAL CLIMA HT...
  • Page 83 Power as a function of external temperature: ……………………….. kW (See manual, “ ”) Real power: [(1) – (2)] x (3) x 60 / 860 = ……………………….. kW Perform the measurements with the machine at 100%, ensuring that the compressor is at maximum frequency and in thermal equilibrium. DUAL CLIMA HT...

  • Page 84: Control Pump Theory And Control

    In this operating mode, the DUAL CLIMA HT heat pump will heat the water in the domestic hot water storage tank to the desired temperature, to provide DHW to the home. To do this, select the desired DHW setpoint temperature.

  • Page 85: Start/Stop Cycle

    30 seconds later the 4-way valve will switch to Heat mode. After a further 30 seconds, all defrost function operations will be completed and the heat pump will resume its normal operation. DUAL CLIMA HT...

  • Page 86: Activation Conditions

    Evaporator temperature (C00) ≤ P29; (default value: 0 ºC). By reducing the value of P29 • activation of the Defrost Function is delayed. Ambient temperature (C02) ≤ P85, (default value: 8 ºC). By reducing the value of P85 • activation of the Defrost Function is delayed. DUAL CLIMA HT...

  • Page 87: Deactivation Conditions

    E.g: If P27 = 35 and P26 = 2, 70 minutes (35 x 2) must elapse between two defrost cycles before the Defrost Function is reactivated. In dry areas where there is no risk of frost and where the time between defrosting cycles is to be extended, parameter P26 can be used. DUAL CLIMA HT...

  • Page 88: Solutions To Defrosting Problems

    Minimum separations for installation of a unit (mm). Minimum separations for installation of multiple units in the same location (mm). DUAL CLIMA HT...
  • Page 89 Follow the steps shown below: (1) Remove the probe clip from (2) Move the probe to the (3) Wrap the probe in the tube frosted tube aluminium foil self-adhesive tape and secure it. DUAL CLIMA HT...

  • Page 90: Anti-Freeze Function

    Furthermore, if the external temperature falls below 0ºC at any time, the water circulation pumps (C1 and C2) will start up within a time interval defined in parameter P21 for one minute. DUAL CLIMA HT...

  • Page 91: Maximum Speed

    8.5 Fan The Dual Clima HT heat pump fan, is a modulating fan that adjusts the working speed according to the needs at any given moment. Its functioning is determined by various parameters and modulation logic. When the heat pump is operating in heating mode, during the first 60 seconds after start-up, it will run at maximum speed, according to parameter (P60).

  • Page 92: Operating Frequencies

    8.6 Compressor Element The Dual Clima HT heat pumps are equipped with a heating element to heat the compressor oil before start-up and when the compressor is cold. The compressor resistor will preheat the compressor oil before the first start-up whenever the external temperature is below 10°C.
  • Page 93 P51 > C13 > P52: The compressor will maintain the operating frequency. • C13 < P52: The compressor will run normally until the frequency set-point is reached. • C13 > P53: The compressor must stop for safety reasons and will display error E13. • DUAL CLIMA HT...
  • Page 94 The heat pump will limit the running speed of the compressor for safety reasons if the temperature of the internal heat exchanger is too high in cooling mode. 52ºC ≤ C00 ≤56℃: The compressor maintains its frequency. • 56ºC ≤ C00 ≤60℃: The compressor will reduce the operating frequency. • DUAL CLIMA HT...
  • Page 95 If during the lubricant return process the compressor cannot reach the frequency defined in parameter P41, the compressor speed will be reduced for safety reasons but the function will remain active until the required cycle is completed. DUAL CLIMA HT...

  • Page 96: Electronic Expansion Valve (Eev)

    8.7 Electronic Expansion Valve (EEV) The Electronic Expansion Valve (EEV) of the Dual Clima HT heat pump, is an expansion valve that adjusts its opening to suit the needs at any given time. Its functioning is determined by various parameters and settings logic.

  • Page 97: Auxiliary Or Backup Energy Sources (E1 And E2)

    8.8 Auxiliary or backup energy sources (E1 and E2) The Dual Clima HT heat pump is equipped with 2 relay outputs (E1, E2) for connecting auxiliary energy sources, which may be heating elements, a gas boiler, an oil-fired boiler, etc. or any combination of these.

  • Page 98: Operation Of Auxiliary Relays E1 And E2 (P81=0)

    The compressor runs for P36 minutes Temperature_DHW < P35. E1 Condition 3: SET_temperature_DHW < P35 The compressor runs for P36 minutes Temperature_DHW < SET_temperature_DHW – P24. E2 Condition 1: Temperature_FLOW < SET_Heating – P24. The compressor runs for P36 minutes. DUAL CLIMA HT...

  • Page 99: Operation Of Auxiliary Relays E1 And E2 (P81=1)

    Temperature_DHW > SET_temperature_DHW. E1 Condition 2: SET_temperature_DHW < P35 Temperature_DHW > SET_temperature_DHW – P24. E2 Condition: Temperature_FLOW > SET_Heating. Deactivation conditions when ambient temperature (C02) < P82: E1 Condition: Temperature_DHW > SET_temperature_DHW. E2 Condition: Temperature_FLOW > SET_Heating. DUAL CLIMA HT...

  • Page 100: Operation Of Auxiliary Relays E1 And E2 (P81=2 And 3)

    Temperature_DHW > SET_temperature_DHW. E1 Condition 2: SET_temperature_DHW < P35 Temperature_DHW > SET_temperature_DHW – P24. E2 Condition: Temperature_FLOW > SET_Heating. Deactivation conditions when ambient temperature (C02) < P22/P23: E1 Condition: Temperature_DHW > SET_temperature_DHW. E2 Condition: Temperature_FLOW > SET_Heating. DUAL CLIMA HT...

  • Page 101: 3-Way Electronic Valve G1

    8.10 3-way electronic valve G2 In Cooling Mode, valve G3 is deactivated while in Heating Mode it is activated. 2-wire valve: 3-wire valve: NO: Socket Open in idle mode (motor not energised). NO: Socket Closed in idle mode (motor not energised). DUAL CLIMA HT...

  • Page 102: System Parameters (P)

    9 SYSTEM PARAMETERS (P) Within the Configuration menu, the electronic control of the DUAL CLIMA HT pump has a sub-menu with the System Parameters, in which it will be possible to view and modify all the technical parameters. To validate access to the System Parameters, enter the password “99”. In the case of needing to modify parameters related to the refrigerant circuit, it will be necessary to enter the password "8563".

  • Page 103: Anti-Legionella Function

    Legionella prevention function. Anti-legionella function 0: Auto Mode This parameter can be used to enable the 1: Manual Mode prevention function against the proliferation of the legionella bacteria. The function can 2: Disabled also be activated once manually. DUAL CLIMA HT...
  • Page 104 Anti-freeze interval Time interval in which the circulation pumps C1 and C2 will be activated whenever the 5 ~ 50 minutes external temperature is below 0 °C. DUAL CLIMA HT...
  • Page 105 Defrosting operation. 0: Auto Manual defrost activation. Returns to 0 on 1: Manual completion. Defrost activation temperature -8 ~ 5 ºC Evaporator temperature (C00) for starting- up the defrosting process. DUAL CLIMA HT...
  • Page 106 2~15℃ Modifying this parameter may cause the heat pump to malfunction and/or break. Temperature for fan speed adjustment in cool mode. 3~18℃ Modifying this parameter may cause the heat pump to malfunction and/or break. DUAL CLIMA HT...
  • Page 107 Maximum compressor frequency 50 ~ 120 Hz Modifying this parameter may cause the heat pump to malfunction and/or break. Maximum compressor frequency 0 ~ 90 Hz Modifying this parameter may cause the heat pump to malfunction and/or break. DUAL CLIMA HT...
  • Page 108 Modifying this parameter may cause the heat pump to malfunction and/or break. Maximum high pressure High pressure at which the compressor will stop for safety reasons. 20 ~ 45Bar Modifying this parameter may cause the heat pump to malfunction and/or break DUAL CLIMA HT...
  • Page 109 Below this value, error E15 will be displayed. Heating/cooling mode activation 0: Heating + cooling This parameter can be used to activate and 1: Cooling only deactivate the heating and/or cooling operating modes. 2: Heating only DUAL CLIMA HT...
  • Page 110 P71=0. For technical service use only. Type of pressure sensor 0: Pressure sensor This parameter is used to set the type of 1: Reserved pressure sensor. P74 Reserved P75 Reserved P76 Reserved P77 Reserved P78 Reserved P79 Reserved DUAL CLIMA HT...
  • Page 111 P88 Reserved P89 Reserved 0 ~ 2.0 P90 Reserved 0 ~ 20 Temperature difference (ambient- evaporator) for defrost 2 0 ~ 20 ºC Required temperature difference for defrost activation when ambient temperature ≤ - 7ºC. DUAL CLIMA HT...
  • Page 112 Flow/return temperature difference protection P102 8 ~ 20 ºC Maximum difference between flow and return probes. Above this value, error E22 will be displayed. P103 Initial opening time of expansion valve 0 ~ 300 sec DUAL CLIMA HT...
  • Page 113 P114 0 ~ 60 % Percentage of drop in compressor frequency after reaching the set-point temperature. Maximum flow temperature P115 70 ~ 90 ºC Modifying this parameter may cause the heat pump to malfunction and/or break. DUAL CLIMA HT...
  • Page 114 0: Disable; P207 10 ~ 70 ºC DHW set-point for switch-on mode. 0: Heat pump + SG Ready function heating devices E1/E2 P208 1: E1/E2 Selection of active devices in the SG Ready 2: Heat pump function. only DUAL CLIMA HT...

  • Page 115: Parameters Of The Status Menu (C)

    10 PARAMETERS OF THE STATUS MENU (C) On the Settings Menu, the DUAL CLIMA HT heat pump electronic control has an Operating status sub- menu. In this Menu, it is possible to view and check the status of all the control and safety components of the heat pump at all times, as well as the values of some operating parameters.
  • Page 116 Off: Disabled On: Enabled Indicates whether the anti-legionnaire's disease feature is activated. Overcurrent protection Off: Disabled On: Enabled Indicates whether the overcurrent protection is activated. Defrost Off: Disabled On: Enabled Indicates whether the defrost feature is activated. DUAL CLIMA HT...
  • Page 117 °C Temperature setpoint of the anti-legionella prevention function, set on the control panel Lubricant status Off: Disabled On: Enabled Indicates whether or not the lubricant return function is activated. Compressor run time Hours Accumulated compressor run time. DUAL CLIMA HT...
  • Page 118 Indicates the selected operating mode of the heat pump. 4: Cooling 5: DHW + Cooling. PCB software version Indicates the software version of the heat pump power card Software display version Indicates the software version of the heat pump display DUAL CLIMA HT...

  • Page 119: Error Management Procedure

    • Reconnect the probe. Return temperature Open circuit or short-circuit • Measure the resistance of the probe at sensor failure. of T11 probe. different temperatures; if it gives an error, replace the probe. DUAL CLIMA HT...

  • Page 120: Probe Specifications

    Ambient temperature probe. 5KΩ element CDCL000202 Exterior heat exchanger NTC 5K 2m CDCL000195 temperature probe Connection to PCB. NTC 5K 2m (Plastic) Exterior temperature probe CDCL000198 Connection to PCB. NTC 5K 2m Suction temperature probe CDCL000195 Connection to PCB. DUAL CLIMA HT...
  • Page 121 Connection to terminal strip. NTC 5K 2m Flow temperature probe CDCL000195 Connection to PCB. NTC 5K 5m DHW temperature probe CDCL000196 Connection to terminal strip. Interior heat exchanger NTC 5K 2m CDCL000195 temperature probe Connection to PCB. DUAL CLIMA HT...
  • Page 122 3.434 1.250 0.533 261.115 45.809 11.098 3.334 1.219 0.522 247.531 43.864 10.710 3.237 1.189 0.511 234.729 42.012 10.337 3.143 1.160 0.501 222.660 40.248 9.979 3.052 1.132 0.491 211.277 38.568 9.636 2.965 1.104 0.481 9.306 2.880 1.078 0.471 DUAL CLIMA HT...
  • Page 123 0.8695 15.5886 3.0809 0.8441 14.8713 2.9727 0.8196 14.2293 2.8688 0.7959 13.6017 2.7692 0.7730 13.0057 2.6735 0.7508 12.4390 2.5816 0.7295 11.9011 2.4936 0.7086 11.3894 2.4097 0.6885 10.9028 2.3276 0.6690 10.4399 2.2491 0.6502 9.9995 2.1739 0.6320 9.5802 2.1016 0.6144 DUAL CLIMA HT...

  • Page 124: E11: Fault In The High Pressure Sensor / E12: Fault In The Low Pressure Sensor

    If the error persists, replace the power PCB. • Reconnect the sensor. Open circuit or short circuit in • Replace the sensor. Low pressure sensor failure. the LS pressure sensor. • If the error persists, replace the power PCB. Solution DUAL CLIMA HT...

  • Page 125: E13: High-Pressure Protection And E14: Low-Pressure Protection

    Check operating flow rate and if it is not within the recommended limits, install a back-up • pump for heating/cooling and/or DHW (C2 and/or C3). Check the connection and operation of the 3-way valve (G1), ensuring that it switches correctly from heating/cooling to DHW. DUAL CLIMA HT...
  • Page 126 There must be no obstacles preventing air circulation through the evaporator and at the fan outlet It must be ensured that the minimum required installation dimensions are complied with. • 5. Check that the fan is working properly. See section “Fan”. DUAL CLIMA HT...

  • Page 127: E15: Insufficient Water Flow

    • Clean the water filter, check whether the water pump has sufficient capacity. • Insufficient water flow. Insufficient water • Include back-up pumps for flow • Flow meter failure. heating/cooling (C2) or for DHW (C3). • Check and reconnect the flow meter. Solution DUAL CLIMA HT...

  • Page 128: E16: Communication Error

    Communication error • Communication cable fault. connectors and/or along the entire communication cable. • Interference in the communication cable. • Check whether there are large devices or strong magnetic fields around the unit. Solution: DUAL CLIMA HT...

  • Page 129: E17: Compressor Gas Discharge Temperature Too High

    The refrigerant gas contained in the heat pump is highly flammable and can cause damage to persons or property. Read all warnings carefully before handling any component, especially if there is any suspected gas leakage. 4. Check the correct operation of the electronic expansion valve. DUAL CLIMA HT...

  • Page 130: E18: Incorrect Heat Pump Configuration

    SW3 and SW4 on the PCB. (P87). • Incorrect configuration of • Check the software version (C55 and system parameters. C56) of the heat pump and ensure that it corresponds to that required. If necessary, reconfigure the heat pump. Solution DUAL CLIMA HT...

  • Page 131: E20: Ipm Or Compressor Error

    11.9 E21: Voltage error Error Possible reason for the Error meaning Error solution code error Switch the heat pump off and on. If the error persists: Voltage error. Voltage error in the heat pump. • Change SW4-3 to OFF. DUAL CLIMA HT...

  • Page 132: E22: Large Temperature Difference Between Flow And Return

    • Check and clean the water filter. • Dirty or clogged water • Check whether the water pump has filter. sufficient capacity. Include back-up • Insufficient flow rate. pumps for heating/cooling (C2) or for DHW (C3). Solution DUAL CLIMA HT...

  • Page 133: E23: Dhw Mode Anti-Freeze Function

    60 minutes. freeze function the DHW tank. The water temperature in the • If there is no DHW function in the • DHW tank is below 5ºC. installation, disable this function by adjusting parameter P63. Solution DUAL CLIMA HT...

  • Page 134: E24: Anti-Freeze Function In Heating/Cooling Mode

    Heating/Cooling mode anti- anti-freeze function has been faulty. freeze function triggered twice in the last 90 • Check that the probes are properly minutes. insulated. • Check that the flow rate of the heat pump is correct. Solution DUAL CLIMA HT...

  • Page 135: E27: Room Temperature Exceeds Limit

    45°C or whether there could be a The room temperature has measurement error in the ambient Room temperature exceeds exceeded the upper limit probe. limit. permitted (45ºC). • Wait until the ambient temperature is within the working range of the heat pump. Solution DUAL CLIMA HT...

  • Page 136: E28: High Return Temperature (Cooling Mode)

    • Check operation of the G1 diverter minutes. High return temperature valve. (cooling mode) • Error in diverter valve • Check the reading of the flow and return probes. Temperature probe error. • • Check the installation. Incorrect installation • Solution DUAL CLIMA HT...

  • Page 137: E32: High Flow Temperature

    • Error in diverter valve G1. (Heating and DHW mode) of the DHW probe. • Temperature probe error. • Check the reading, position and • Incorrect installation insulation of the flow probe. • Check the pump • Check the installation. Solution DUAL CLIMA HT...

  • Page 138: E36: Fan Communication Failure. (Three-Phase)

    Fan communication failure. • Communication cable (Three-phase) with fan motor module. • Replace fan motor module. • Problems in the fan • Replace PCB. motor module. Solution DUAL CLIMA HT...

  • Page 139: E40: Low Return Temperature (Cooling Mode)

    • Dirty or clogged water • Check and clean the water filter. filter. • Insufficient flow rate. • Ensure that the water circuit is • Air in the water circuit. correctly drained. Solution DUAL CLIMA HT...

  • Page 140: E44: Fan Motor Fault

    • Check that the fan cable is not loose • Loose fan motor cable. or damaged. Fan motor fault. • Problems in the fan • Replace fan motor. motor. • Replace IPM card. • Problems in the power board. Solution DUAL CLIMA HT...

  • Page 141: E50: External Heat Exchanger Sensor Too High

    • Temperature probe error. heat pump. Ensure that the • Fan error. recommended minimum distances are maintained. • Incorrect installation. • Check the flow rate of the heat pump and ensure that it meets the requirements for each model. Solution DUAL CLIMA HT...

  • Page 142: E56: Current Protection

    • Check water flow rate and verify that it is within recommended • Card or wiring error. values. • Incorrect reading of probes. • Check that there are no signs of rust or corrosion on the boards or cables. Solution DUAL CLIMA HT...

  • Page 143: E58: Ambient Temperature Below The Limit

    The room temperature has measurement error in the ambient Room temperature below fallen below the lower limit probe. limit. permitted (-25ºC). • Wait until the ambient temperature is within the working range of the heat pump. Solution DUAL CLIMA HT...

  • Page 144: E59: Flow And Return Sensors Reversed Or 4-Way Valve Failure

    • Check that the probes are properly reversed or 4-way valve C07>2ºC. insulated. failure. • Flow and return probes • Reconnect 4-way valve, ensure reversed. correct wiring. • Failure in the 4-way • Check the correct functioning of the valve. 4-way valve. Solution DUAL CLIMA HT...

  • Page 145: E99: Communication Failure With Ipm Module

    Communication failure with • Communication cable connectors and/or along the entire IPM module. fault. communication cable. • Interference in the • Check whether there are large communication cable. devices or strong magnetic fields around the unit. Solution: DUAL CLIMA HT...

  • Page 146: E20-1: Overcurrent In Ipm

    1Ω in the compressor. • Fan problems. • Remove the three wires and measure whether the resistance between the two phases is balanced and around 1Ω in the IPM. • Replace IPM module. Solution: DUAL CLIMA HT...

  • Page 147: E20-5: Compressor Failure

    1Ω in the compressor. • Compressor error. • Remove the three wires and measure whether the resistance • IPM module fault. between the two phases is balanced and around 1Ω in the IPM. • Replace IPM module. Solution: DUAL CLIMA HT...

  • Page 148: E20-320:Compressor Overcurrent Protection

    • Inverted U, V, W cables. and around 1Ω in the compressor. • Remove the three wires and measure whether the resistance between the two phases is balanced and around 1Ω in the IPM. • Replace IPM module. Solution: DUAL CLIMA HT...

  • Page 149: E20-288: Excessive Temperature In Ipm

    • Compressor current is too • Check whether the wiring of the IPM high. module is loose or damaged. • Check that the IPM module is not burnt out. • Replace the IPM module. Solution: DUAL CLIMA HT...

  • Page 150: E20-384 Pfc Module Failure In Ipm

    • Error in the power and that the power cable is not supply. loose. E20- PFC module failure in IPM. • Problems in the IPM • Check IPM wiring and inductance. Module. • Replace IPM or inductance. Solution DUAL CLIMA HT...

  • Page 151: E20-32: High Voltage In Ipm And E20-16: Low Voltage In Ipm

    E20- Low voltage in (C24) is too low or unstable, the heat loose. pump will restart automatically when the • Check IPM wiring and inductance. voltage is within the admissible range. • Replace IPM or inductance. Solution DUAL CLIMA HT...

  • Page 152: E20-264: Ac Voltage Protection

    E20- AC voltage loose. protection • 187 ~ 265 Vac for single-phase • Check IPM wiring and inductance. models. • Replace IPM. • 320 ~ 460 Vac for three-phase models. Solution DUAL CLIMA HT...

  • Page 153: E20-260: Ac Ipm Current Protection

    • Dual Clima 16HT; C35>21A. • Check water flow rate and verify • Dual Clima 16HTT; C19>21A. that it is within recommended values. • Check that there are no signs of rust or corrosion on the boards or cables. Solution DUAL CLIMA HT...

  • Page 154: E20-257: Ipm Communication Failure

    • Check the rest of the IPM and communication IPM module and the power board is inductive wiring. failure. disconnected. • Replace IPM. • Problems in the IPM Module. • Replace the PCB board. • PCB problems Solution DUAL CLIMA HT...

  • Page 155: E20-258: Phase Loss

    • Check that the power supply is OK and that the power cable is not loose. • Error in the power supply. E20- Phase loss • Check IPM wiring and inductance. • Problems in the IPM Module. • Replace IPM or inductance. Solution DUAL CLIMA HT...

  • Page 156: E20-298: Ipm And E20-299 Protection: Current Sensor Fault

    • Check that the power supply is OK and Current that the power cable is not loose. • Error in the power supply. E20- sensor • Check IPM wiring and inductance. • Problems in the IPM Module. failure. • Replace IPM or inductance. Solution DUAL CLIMA HT...

  • Page 157: Other Considerations

    OK. Also, check the cable for signs of damage. If everything is correct, first replace the HMI remote control and the communication cable. If this does not solve the problem, replace the power board. DUAL CLIMA HT...

  • Page 158: Performance Curves

    12.3 Performance curves The following graphs describe the power of each Dual Clima HT model, depending on the external temperature. Dual Clima 6HT Dual Clima 9HT DUAL CLIMA HT...
  • Page 159 Dual Clima 12HT Dual Clima 16HT DUAL CLIMA HT...

  • Page 160: Checking The Quantity Of Refrigerant

    15~20 minutes of compressor operation. In these cases ice will concentrate on the evaporator inlet tubes even at an external temperature of 14 °C. If ice appears when the air temperature >10°C, there may have been a leak. DUAL CLIMA HT...
  • Page 161 If the external heat exchanger temperature is much lower than normal, there may have been a leak. Check the output of the heat pump. If the heating capacity is 20% lower than the power curve, there may have been a leak. See section on “Performance curves”. DUAL CLIMA HT...
  • Page 162 NOTES: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ DUAL CLIMA HT...
  • Page 163 NOTES: ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ DUAL CLIMA HT...
  • Page 164 FACTORY & OFFICES Apartado 95 San Esteban auzoa s/n DSAT000108 09/06/23 20730 AZPEITIA 20737 ERREZIL (Gipuzkoa) TEL: (+34) 943 813 899 www.domusateknik.com DOMUSA TEKNIK reserves the right to make modifications of any kind to its product characteristics without prior notice.

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