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MAKING MODERN LIVING POSSIBLE
User Guide
DHP-AT
www.heating.danfoss.com

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Summary of Contents for Danfoss DHP-AT

  • Page 1 MAKING MODERN LIVING POSSIBLE User Guide DHP-AT www.heating.danfoss.com...
  • Page 2 The English language is used for the original instructions. Other languages are a translation of the original instructions. (Directive 2006/42/EC) © Copyright Danfoss A/S...
  • Page 3: Table Of Contents

    ..........Danfoss Heating Solutions...
  • Page 4: Foreword

    We thank you for the confidence that you have shown in us by buying a heat pump from Danfoss. We hope that you will benefit from it for many, many years to come. With best wishes...
  • Page 5: Safety Precautions

    ▪ Water expands when it is heated, this means that a small amount of water is released from the system via the overflow pipe. The water that exits the overflow pipe can be hot! Therefore, allow it to flow to a floor drain where there is no risk of burning yourself. Danfoss Heating Solutions VUGFC302...
  • Page 6: About Your Heat Pump

    User Guide DHP-AT About your heat pump Components Air inlet Air outlet Return line Supply line Operator panel Hot water tank sensor and buffer tank sensor Power supply example (local and national regulations must be applied) VUGFC302 Danfoss Heating Solutions...
  • Page 7: Main Functions

    The heating function can be set to MANUAL mode, then the heat pump will produce a constant supply line temperature following the setting in the control system. The picture below shows a simplified view of the recommended heating curves and the temperature working range in AUTO mode. Danfoss Heating Solutions VUGFC302...
  • Page 8 Adjustable cooling supply line temperature range: 8-28°C. (Default cooling temperature is 12°C) If the supply line water temperature drops below 2 °C in cooling mode the machine will stop. This to prevent inside components from freezing. Error code 13 will be displayed. VUGFC302 Danfoss Heating Solutions...
  • Page 9: Internal Electrical Heater

    When this protective function is triggered, the controller will display either "Err 18" or "Err 19" depending on the temperature in the system, this is not a fault. The unit will automatically recover once the conditions in the control system is met. Danfoss Heating Solutions VUGFC302...
  • Page 10: Control System

    The operator panel has a keypad (4) for user interaction and the information is presented in a display (1) above the keypad (4) and by the indicator (2) beside the power ON/OFF button (3). Information symbols Indicator Power ON/OFF button Keypad Fig. 1: Operator panel VUGFC302 Danfoss Heating Solutions...
  • Page 11: Keypad

    DHW has been turned off, this part of the display will be empty. If the menu system is entered using the keypad or if an error occurs, the appearance of the display will change. The following information is available: Danfoss Heating Solutions VUGFC302...
  • Page 12 Indicator for hot water tank electrical heater Domestic Hot Water (DHW) Hot water tank temperature Interface locked Buffer tank water temperature Indicator for house heating/cooling function The display shows the available menus and the default or configured settings. VUGFC302 Danfoss Heating Solutions...
  • Page 13: Menu Information

    2. Before the flashing stops, press the buttons to navigate between the menus. The current parameter value for a menu setting is displayed in the right-hand side of the window. The default value can be found further on in this user guide. Danfoss Heating Solutions VUGFC302...
  • Page 14: Turning Power On/Off

    If the heat pump is turned off, only current time is displayed. When the heat pump is turned on from the operator panel (3), the current operation and status will be dis- played. VUGFC302 Danfoss Heating Solutions...
  • Page 15: Settings And Adjustments

    1. To change the default setting of the DHW tank temperature, press . The temperature setting starts to flash. 2. Use the buttons to change the temperature. 3. Wait 5 seconds (the figures stop flashing) for the temperature value to be set. Danfoss Heating Solutions VUGFC302...
  • Page 16: Changing Heat Curve And Desired Room Temperature

    2. While the symbols are flashing adjust the default hour setting by using the buttons. 3. Press again. 4. Use buttons to change the default minute setting. 5. Before the flashing stops, press again or wait 5 seconds to save the settings. VUGFC302 Danfoss Heating Solutions...
  • Page 17: Timer Settings

    2. Press to navigate to Menu 02. 3. Press the again. 4. Press to select value 0 for MANUAL mode. 5. Press again or wait 5 seconds. 6. To lock the mode, press for 5 seconds. Danfoss Heating Solutions VUGFC302...
  • Page 18: Adjusting The Indoor Temperature In Manual Mode

    Defrosting cycle 40 min 30—90 min Coil temperature threshold for starting defrosting -6 °C From -20 °C to +5 °C Coil temperature threshold for stopping defrosting 13 °C 1—30 °C Maximum defrosting period 12 min 1—12 min VUGFC302 Danfoss Heating Solutions...
  • Page 19 Measured val- From -30 °C to +99 °C Coil temperature in heating mode (T7) Measured val- From -30 °C to +99 °C Coil temperature in cooling mode (T8) Measured val- From -30 °C to +99 °C Danfoss Heating Solutions VUGFC302...
  • Page 20 From -30 °C to +99 °C Exhaust gas temperature of compressor (T4) Measured val- From -30 °C to +99 °C Shows the number of the operation steps for the ex- Measured val- 100—480 steps pansion valve * Should not be modified. VUGFC302 Danfoss Heating Solutions...
  • Page 21: Regular Checks

    Return gas temperature sensor (T5) failure Exhaust gas temperature sensor (T4) failure Exhaust gas temperature overheat protection Null Frost protection, step 2 (non-fault) Frost protection, step 1 (non-fault) Air temperature sensor (T1) failure Heating coil sensor (T7) failure Danfoss Heating Solutions VUGFC302...
  • Page 22: Check The Water Level In The Heating Circuit

    The safety valve lets out small amounts of water when the water tank is being charged, especially if a lot of hot water was used previously. This is a normal behaviour. The opening pressure of the safety valves is not adjustable. VUGFC302 Danfoss Heating Solutions...
  • Page 23: References

    □ Settings control system □ Manual test components □ Manual test different operating conditions □ Noise check □ Function test safety valve □ Function test mixer valve □ Trimming the heating system Customer information □ Contents of this manual Danfoss Heating Solutions VUGFC302...
  • Page 24 User Guide DHP-AT □ Safety precautions □ Control computer, function □ Settings and adjustments □ Regular checks □ Reference to service requirement □ Warranties and insurances VUGFC302 Danfoss Heating Solutions...
  • Page 25: Installation Protocol

    General Heat pump model Serial number Type of collector Volume of brine (litres) Pipe installation Company Contact person Telephone number Electrical installation Company Contact person Telephone number Commissioning Company Contact person Telephone number Date final inspection Danfoss Heating Solutions VUGFC302...
  • Page 26: Service Sheet

    Service technician's signature* Date (year-month-day)* Customer's signature* Comments* Service company* Service technician's signature* Date (year-month-day)* Customer's signature* Comments* Service company* Service technician's signature* Date (year-month-day)* Customer's signature* Comments* Service company* Service technician's signature* Date (year-month-day)* Customer's signature* Comments* VUGFC302 Danfoss Heating Solutions...
  • Page 27 User Guide DHP-AT Danfoss Heating Solutions VUGFC302...
  • Page 28 Internet: www.heating.danfoss.com Danfoss can accept no responsibility for possible errors in catalogues, brochures and other printed material. Danfoss reserves the right to alter its products without notice. This also applies to products already on order provided that such alterations can be made without subsequential changes being necessary in specifications already agreed. All trademarks in this material are property of the respective companies.

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