DOMUSA TEKNIK DUAL CLIMA HT Installation And Operating Instructions Manual
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DOMUSA TEKNIK DUAL CLIMA HT Installation And Operating Instructions Manual

Air/water heat pump
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DUAL CLIMA HT
Air/water heat pump
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| INSTALLATION AND OPERATING INSTRUCTIONS

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Summary of Contents for DOMUSA TEKNIK DUAL CLIMA HT

  • Page 1 DUAL CLIMA HT Air/water heat pump | INSTALLATION AND OPERATING INSTRUCTIONS...
  • Page 2 Thank you for choosing a DOMUSA TEKNIK heat pump. From the range of DOMUSA TEKNIK products you have chosen the DUAL CLIMA HT model. With a suitable hydraulic installation, this heat pump will provide the ideal level of comfort for your home.

  • Page 3: Table Of Contents

      6.6.9 Connecting room thermostats......................38   6.6.10 SG Ready connection ........................43   6.7 F ..........................44 REEZE ROTECTION   6.7.1 DHW mode anti-freeze process ......................45   6.7.2 Heating/Cooling mode anti-freeze process ..................45   DUAL CLIMA HT...
  • Page 4 18 PERFORMANCE AND EFFICIENCY CURVES ................66  18.1. H ..................66   EATING PERFORMANCE AND EFFICIENCY CURVES 18.2. C ..................70   OOLING PERFORMANCE AND EFFICIENCY CURVES 19 DIAGRAMS AND MEASUREMENTS ................... 74  20 ALARM CODES ........................75  21 GUARANTEE CONDITIONS ...................... 79  DUAL CLIMA HT...

  • Page 5: Safety Warnings

    1 SAFETY WARNINGS 1.1 Use and installation warnings 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 carefully.

  • Page 6: Transport, Storage And Handling Warnings

    1.4 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. Frost protection is therefore very important for this type of appliance.

  • Page 7: Heat Pump Refrigerant Warnings

    1.5 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: Electronic Control Unit

    2 ELECTRONIC CONTROL UNIT 2.1 Control unit The electronic control unit of the DUAL CLIMA HT heat pump has a touchscreen for controlling all the adjustable functions and settings. 1. Temperature selection: 5. Programming Menu touch button: Press this button to change the temperature Press this button to access the heat pump “Time...

  • Page 9: Icons On The Control Unit

    2.3 Date and time settings The DUAL CLIMA HT heat pump has a date and time indicator (12), for managing some of its functions. It is therefore vital to set the correct date and time on starting up the heat pump.

  • Page 10: Switching The Heat Pump On And Off

    4 OPERATION 4.1 Selecting manual operating modes Depending on the configuration of your installation, the DUAL CLIMA HT heat pump can manage up to 5 operating modes manually. To select these operating modes, press the Operating modes touch button (8) on the start screen. The following modes will appear on the display:...

  • Page 11: Cooling Mode

    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 “Temperature Selection”...

  • Page 12: Cooling And Dhw Mode

    Once the desired DHW temperature is reached, the heat pump will enable Heating mode again. 4.7 Functioning in Heating/Cooling "AUTO" mode In "AUTO" mode, the DUAL CLIMA HT heat pump can enable Heating or Cooling mode "automatically". To enable this operating mode, the electronic control has 2 connections (one for enabling Heating mode and the other for enabling Cooling mode).

  • Page 13: Operation With Room Thermostat

    The table below shows the functioning of the Dual Clima HT heat pump in "AUTO", mode, depending on the remote mode selection made on the Hot/Cold thermostat: Thermostat Dual Clima HT Control panel Selection Heating Mode: The heat pump enables Heating mode.

  • Page 14: Functioning According To Outdoor Temperature Conditions (Otc)

    The Dual Clima HT heat pump is already pre-set to work in the best operating mode for the external weather conditions (OTC) with an automatic setpoint temperature.

  • Page 15: Night Mode

    To enable it, set parameter P17 to 1. Also, parameter P15 is used to select Night Mode start time and parameter P16 to select Night Mode end time. The default times are from 10.00 p.m. to 6.00 a.m. DUAL CLIMA HT...

  • Page 16: Anti-Legionella Function

    4.12 SG Ready function The DUAL CLIMA HT heat pump includes the SG Ready (Smart Grid) function. This function allows the power company to communicate with the heat pump and adapt it optimally to the mains network demand via a smart control.
  • Page 17 While recommended start-up mode is enabled, the icon SG Function Ready in on mode will be displayed on the start screen. NOTE: Incorrect setting of the parameters may result in the heating system not providing the desired comfort in the house. DUAL CLIMA HT...
  • Page 18 While On mode is enabled, the icon SG Function Ready in on mode will be displayed on the start screen. NOTE: Incorrect setting of the parameters may result in the heating system not providing the desired comfort in the house. DUAL CLIMA HT...

  • Page 19: Temperature Selection

    To correctly set suitable values for this operating mode, follow the recommendations given by the installer or the DOMUSA TEKNIK Official Technical Service. Depending on the type of installation, the location (climatic zone) and the relative humidity of the home, excessively low temperatures of the Cooling mode setpoint may create “undesired”...

  • Page 20: Setting The Dhw Mode Setpoint Temperature

    ), an auxiliary heat source must be installed on the tank as a backup (electric heating element, backup boiler, etc.). The DUAL CLIMA HT heat pump will heat up the water in the tank to the value selected for parameter P35. After this, it will activate the auxiliary heat source to reach the highest desired temperature.

  • Page 21: Setting The Sg Ready Function Setpoints

    If the OFF default value is kept, no new temperature setpoints will be applied for the operating modes. NOTE: Incorrectly setting of the parameters could mean the heating installation may not generate the desired thermal comfort in the home. DUAL CLIMA HT...

  • Page 22: Installation Instructions

    There must be no obstacles preventing air circulation through the evaporator and at the fan outlet. Minimum separations for installation of a unit (mm). Minimum separations for installation of multiple units in the same location (mm). DUAL CLIMA HT...

  • Page 23: Accessories Supplied

    The DUAL CLIMA HT heat pump is an appliance specially designed for outdoor installation, but it should not be installed in locations where it could be exposed to major water spills or splashes (below a damaged gutter, near a gas outlet, etc.).

  • Page 24: Fixing The Heat Pump

    CLIMA HT heat pump is therefore equipped with two drain holes on the underside of the appliance. Ensure these holes are not obstructed on installation of the appliance. A: Condensate drain hole (view of underside of appliance). B: Indication of front of appliance (discharge side). DUAL CLIMA HT...

  • Page 25: Hydraulic Installation

    If the minimum flow in the heat pump is not reached it could have operating problems and trigger different alarms and stoppages. These values are as follows, depending on the DUAL CLIMA HT model installed:...

  • Page 26: Installing A Dhw Tank

    Likewise, as an alternative to the backup heating element, a conventional energy source (such as a gas or oil-fired boiler) can optionally be connected to the Dual Clima HT heat pump to back up DHW production, via the same electrical connection (E1). The DHW tank must therefore be equipped with an auxiliary pipe and/or an intermediate heat exchange system allowing hydraulic connection of this backup energy source.

  • Page 27: Filling The Installation

    6.5.3 Draining the heat pump A blow-off valve is supplied with the DUAL CLIMA HT heat pump, which must be fitted to the drain socket (B) provided in the lower part of the rear of the appliance. This valve is opened to drain the water from heat pump.

  • Page 28: Installing A Degasifier

    6.5.4 Installing a degasifier The DUAL CLIMA HT heat pump contains R290 refrigerant gas. In case of leakage, this gas can be highly flammable and safety precautions must therefore be taken. An additional safety system must be installed to prevent the gas from entering the installation in case of leakage. DOMUSA TEKNIK will not be liable for any damages caused by failing to have a safety system in place for refrigerant leakage.

  • Page 29: Electrical Connections

    6.6.1 Connection to the mains network The DUAL CLIMA HT heat pump is designed to be connected at 230 V~ 50 Hz o 400 V ~ 50 Hz "Electrical Diagrams" (depending on the model) at the terminals shown in the figure (see ).

  • Page 30: Control Panel Connection

    The cable supplied with the heat pump is 5 metres long. If necessary, it can be extended to a maximum distance of 30 metres (diameter between 0.25 and 1.25 mm IMPORTANT: Before carrying out any work on the heat pump electrical installation, ensure it is disconnected from the mains. DUAL CLIMA HT...

  • Page 31: Connecting The Dhw Sensor

    DHW mode when the water in the tank falls below the desired temperature. A DHW sensor is supplied with the DUAL CLIMA HT heat pump. This sensor is in the documentation bag inside the appliance. The sensor is connected to the electrical terminals T13 (19 and 20) on the heat pump input terminal strip.
  • Page 32 As an alternative to the heating element, a conventional energy source such as an oil-fired, gas-fired, electrical or biomass boiler can be connected to the DUAL CLIMA HT heat pump. The hot water tank must therefore be equipped with an auxiliary pipe and/or an intermediate heat exchange system allowing hydraulic connection of this backup energy source.
  • Page 33 E1 and the boiler control input. To make the connection correctly, carefully follow the diagram below: IMPORTANT: Before carrying out any work on the heat pump electrical installation, ensure it is disconnected from the mains. DUAL CLIMA HT...

  • Page 34: Connecting The Dhw Diverter Valve (G1)

    NO: Socket Open in idle mode (motor not energised). NO: Socket Closed in idle mode (motor not energised). IMPORTANT: Before carrying out any work on the heat pump electrical installation, ensure it is disconnected from the mains. DUAL CLIMA HT...

  • Page 35: Connecting A Backup Energy Source For Heating (E2)

    As an alternative to the heating element, a conventional energy source such as an oil-fired, gas-fired, electrical or biomass boiler can be connected to the DUAL CLIMA HT heat pump. In this case the heating installation must be equipped with an intermediate heat exchange system allowing hydraulic connection of this backup energy source, preferably separate from the heat pump water circuit.
  • Page 36 To do this, run a relay between the heat pump output E2 and the boiler control input. To make the connection correctly, carefully follow the diagram below: DUAL CLIMA HT...

  • Page 37: Connecting The Heating/Cooling Diverter Valve (G2)

    6.6.8 Connecting the backup pump (C2 and C3) Two circulation pumps (C2 and C3) can be connected to the DUAL CLIMA HT heat pump to increase the water flow in the appliance if necessary, in addition to the flow obtained from its own internal pump (C1).

  • Page 38: Connecting Room Thermostats

    Before carrying out any work on the heat pump electrical installation, ensure it is disconnected from the mains. 6.6.9 Connecting room thermostats The DUAL CLIMA HT heat pump has two connections on the component terminal strip for connecting "Connection Diagram" up to 2 room chronothermostats or room thermostats (see...
  • Page 39 This type of thermostat uses 3 communication wires to function: one for the Heating mode activation signal, one for the Cooling mode activation signal and the other for the common signal. According to the status of each signal, the DUAL CLIMA HT heat pump manages the Heating/Cooling operating modes as follows:...
  • Page 40 As indicated in the figure, the heat pump electronic control will begin to work in “Manual” mode if this is required by the thermostat, i.e. the Heating/Cooling operating modes must be selected manually on the heat pump control panel. OFF (standby) Manual mode (temp. reached) DUAL CLIMA HT...
  • Page 41 (TAC) must send a request (closed circuit signal) when the room temperature is lower than the desired temperature (setpoint temperature). The DUAL CLIMA HT heat pump will activate the Heating/Cooling operating modes according to the status of the signal received from each thermostat, as follows:...
  • Page 42 Terminals C (26), H (25) and COM (24) are supplied by default with a bridge connected to each one, so on installing the thermostat both bridges will have to be removed and the thermostat connected as shown in the figure below, according to the mode to be managed: DUAL CLIMA HT...

  • Page 43: Sg Ready Connection

    6.6.10 SG Ready connection The DUAL CLIMA HT heat pump has two connections on the component terminal strip for connecting 2 inputs for the SG Ready function (see “Connection Diagram”), enabling management of the SG function.

  • Page 44: Freeze Protection

    6.7 Freeze Protection 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. Freeze protection is therefore of the utmost importance for this type of appliance, as its internal construction and the amount of water contained in it make it even more prone to freezing.

  • Page 45: Dhw Mode Anti-Freeze Process

    NOTE: For the anti-freeze function to remain enabled and on standby, the heat pump must be connected to the mains and have a power supply. DOMUSA TEKNIK’s guarantee does not cover any damage caused by failing to use a freeze protection system in the installation.

  • Page 46: Heat Pump Configuration

    7 HEAT PUMP CONFIGURATION The default configuration of the DUAL CLIMA HT heat pump is Heating, Cooling and DHW production. If the installation lacks any of these services they MUST be disabled, by adjusting the system parameters "Settings Menu" on the control unit (see ).

  • Page 47: Time Programming

    8 TIME PROGRAMMING The electronic control of the DUAL CLIMA HT pump includes a time programmer (5) for programming its switch-on and switch-off times and the desired operating modes for each one (weekly programming). To exit the menu and return to the start screen, press the touch button There are 3 programmes available for each day of the week.

  • Page 48: User Menu

    9 USER MENU The DUAL CLIMA HT heat pump electronic control has a User Menu (6) for the user to configure, manage and view different functions. To exit the menu and return to the start screen, press the touch button...

  • Page 49: Settings Menu

    10 SETTINGS MENU The DUAL CLIMA HT heat pump electronic control has a Settings Menu (7) for the user to configure, manage and view its different functions and statuses. 10.1 System Parameters On the Settings Menu (7), the DUAL CLIMA HT heat pump electronic control has a System Parameters sub-menu for managing the operation of its gas and water circuits.

  • Page 50: Operating Status

    2: Heat pump only 10.2 Operating Status On the Settings Menu (7), the DUAL CLIMA HT heat pump electronic control has an Operating status sub-menu. On this menu, the status of all the heat pump’s control and safety components and the values of some of the operating parameters can be viewed and checked at any time, via a descriptive diagram of the heat pump.
  • Page 51 0~100% 0: Standby, 1: DHW, 2: Heating, 4: Heat pump operating mode Cooling Reserved 0: Standby, 1: DHW, 2: Heating, 3: Selected operating mode DHW+Heating, 4: Cooling, 5: DHW + Cooling PCB software version Software display version DUAL CLIMA HT...

  • Page 52: Configuring The Auxiliary Or Backup Energy Sources (E1, E2)

    11 CONFIGURING THE AUXILIARY OR BACKUP ENERGY SOURCES (E1, The operating principle of DUAL CLIMA HT heat pumps is to extract energy from the air outside the building and transmit it to the interior to heat or cool a water circuit for either heating/air conditioning and/or DHW production.

  • Page 53: Backup Source Mode (P81 = 0)

    The selectable range of values for parameter P82 is -30 ~ +20 ºC. The pre-set default value is -15ºC. This setting can be increased or decreased by entering the desired value on the drop-down sub-menu. DUAL CLIMA HT...

  • Page 54: Passive Combined Mode (P81 = 2)

    NOTE: The heat pump’s CIRCULATION PUMP (C1) WILL NOT BE ACTIVATED in “Auxiliary source mode”, and it is therefore essential for the auxiliary energy source to have its own circulation pump. DUAL CLIMA HT...

  • Page 55: Start-Up

    12.1 Prior warnings Repair and maintenance of the heat pump must be carried out by a qualified professional authorised by DOMUSA TEKNIK. For optimum functioning and conservation of the heat pump, it should be serviced annually. Please carefully read this instruction manual and keep it in a safe, easily-accessible place. DOMUSA TEKNIK will not be liable for any damages caused by failure to follow these instructions.

  • Page 56: Maintenance

    13 MAINTENANCE To maintain the heat pump in perfect working order, a yearly overhaul should be performed by DOMUSA TEKNIK's authorised personnel. Among other maintenance work, the following must be carried out at least once a year:  Check that the supply, consumption and electrical system are all correct.

  • Page 57: Electrical Diagrams

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

  • Page 58: Dual Clima 6Ht

    15.2 Dual Clima 6HT DUAL CLIMA HT...

  • Page 59: Dual Clima 9Ht

    15.3 Dual Clima 9HT DUAL CLIMA HT...

  • Page 60: Dual Clima 12Ht

    15.4 Dual Clima 12HT DUAL CLIMA HT...

  • Page 61: Dual Clima 16Ht

    15.5 Dual Clima 16HT DUAL CLIMA HT...

  • Page 62: Dual Clima 16Htt

    15.6 Dual Clima 16HTT DUAL CLIMA HT...

  • Page 63: Technical Characteristics

    (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 898/1115/415 1320/1115/415 (Height/Width/Depth) Net weight DUAL CLIMA HT...

  • Page 64: Circulation Pump Characteristics

    Clima HT heat pump model. 17.1 Circulation pump flow curves The graphs below show the hydromotive pressure that can be reached by each Dual Clima HT model water circulation pump, according to the installation flow: Dual Clima 6HT and Dual Clima 9HT...

  • Page 65: Heat Pump Pressure Drop

    The graph below shows the pressure drop generated by the internal hydraulic circuit of each Dual Clima HT, model, according to the installation flow: 17.3 Circulation pump adjustment The Dual Clima HT circulation pump (C1) can be speed-adjusted. This is done by adjusting Settings Menu parameters P59 of the System Parameters (see ).

  • Page 66: Performance And Efficiency Curves

    18 PERFORMANCE AND EFFICIENCY CURVES The operating principle of DUAL CLIMA HT heat pumps is to extract energy from the air outside the building and transmit it to the interior to heat or cool a water circuit for either heating/air conditioning and/or DHW production.
  • Page 67 Dual Clima 9HT DUAL CLIMA HT...
  • Page 68 Dual Clima 12HT DUAL CLIMA HT...
  • Page 69 Dual Clima 16HT/16HTT DUAL CLIMA HT...

  • Page 70: Cooling Performance And Efficiency Curves

    18.2. Cooling performance and efficiency curves The graphs below show the cooling capacity (power) and efficiency (COP) of each Dual Clima HT model, according to the external temperature. Dual Clima 6HT DUAL CLIMA HT...
  • Page 71 Dual Clima 9HT DUAL CLIMA HT...
  • Page 72 Dual Clima 12HT DUAL CLIMA HT...
  • Page 73 Dual Clima 16HT/16HTT DUAL CLIMA HT...

  • Page 74: Diagrams And Measurements

    C (mm) D (mm) IC: Heating/Air Conditioning Flow 1” 1-1/4” RC: Heating/Air Conditioning Return 1” 1-1/4” V: Water circuit draining 1/2" HP: Gas circuit High Pressure port 1/4" SAE LP: Gas circuit Low Pressure port 1/4" SAE DUAL CLIMA HT...

  • Page 75: Alarm Codes

    20 ALARM CODES The DUAL CLIMA HT boiler is equipped with an electronic control that performs continuous self-testing to detect any pump malfunctioning. When the electronic control detects an operating error, this is indicated by an alarm code and an alarm indicator light ( ) on the main control panel display.
  • Page 76 Check the electrical diagram and the connector at sensor T6. Check the control card SW1’s and all the Service Heat pump settings incorrect. Menu parameters. If this alarm persists or occurs repeatedly, contact the nearest Official Technical Assistance service. DUAL CLIMA HT...
  • Page 77 The compressor is not working correctly. Check the E20-5 Compressor failure. wiring. If this alarm persists or occurs repeatedly, contact the nearest Official Technical Assistance service. E20- The compressor electric current is too high. Contact your Compressor overcurrent protection nearest Official Technical Assistance Service. DUAL CLIMA HT...
  • Page 78 IPM protection. Technical Assistance Service to have it repaired. Failure of the appliance’s internal ammeter, or the power E20- Current sensor failure. wire is not crossing it. Contact your nearest official Technical Assistance Service to have it repaired. DUAL CLIMA HT...

  • Page 79: Guarantee Conditions

    5 Years for the heat pump compressors. 10 Years for the stainless steel tank unit on FUSION models. During the 3-year period following the start-up date, DOMUSA TEKNIK will carry out any repairs of original flaws or defects totally free of charge.
  • Page 80 Bº San Esteban, no number CDOC002751 22/11/22 20730 AZPEITIA 20737 ERREZIL (Gipuzkoa) Tel: +34 943 813 899 Fax: +34 943 815 666 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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