Danfoss DHP-AQ User Manual
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Danfoss DHP-AQ User Manual

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User manual
DHP-AQ
VUGFB102

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  • Page 1 User manual DHP-AQ VUGFB102...
  • Page 2 Danfoss A/S reserves the right to make changes to components and specifications without prior notice. © 2010 Danfoss A/S. The Swedish language is used for the origi- nal instructions. Other languages are a translation of the original instructions. (Directive 2006/42/EC)

  • Page 3: Table Of Contents

    Contents Foreword ..............................3 Safety precautions ..........................4 Installation and maintenance ......................4 System modifications ..........................5 Safety valve ..............................5 About your heat pump ........................6 Components and functions ......................... 6 Control system ............................ 12 Keypad ..............................12 Indicator ..............................12 Display ..............................

  • Page 5: 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.

  • Page 6: Safety Precautions

    Safety precautions The heat pump cover and control unit cover must only be opened by authorised service technicians. This product is not intended for persons (including children) with reduced physical, sensory or psychological capacity, or who do not have knowledge or experience, unless supervised or they have received instructions on how the apparatus functions from a safety qualified person.

  • Page 7: System Modifications

    System modifications Only authorized installers may carry out modifications on the following components: • The heat pump unit • Water and electrical installations • The safety valve Do not carry out construction installations that may affect the opera- tional safety of the heat pump. Safety valve The following safety precautions apply to the hot water circuit’s safety valve with corresponding overflow pipe:...

  • Page 8: About Your Heat Pump

    About your heat pump The heat pump is a complete heat pump installation that consists of two basic units: a heat pump placed outdoors and a control unit placed indoors. The control unit is available in three models in order to be able to create as optimal system solution as possible, both in an existing heating system that is to be upgraded and in new builds.
  • Page 9 3.1.2 Control unit DHP-AQ Mini DHP-AQ Maxi DHP-AQ Midi Position Description Control module (transparent in image) Immersion heater Reversing valve Circulation pump Water heater 3.1.3 Heating The heat pump can produce heat for heating (house, pool) and hot water. The hot water requirement is prioritised before the heating require- ment.
  • Page 10 • A fan draws the outdoor air through an air heat exchanger (1), which heats up the cold refrigerant, which evaporates into a gas. • The refrigerant that is now supplied with energy in the form of heat is transferred via the 4 way valve (2) to the compressor (3), where its temperature and pressure are increased.
  • Page 11 3.1.4 Hot water function DHP-AQ Midi and DHP-AQ Maxi are adapted for hot water production. Production of heating and hot water cannot occur at the same time because the reversing valve for heating and hot water is positioned after the heat pump and the immersion heater. Hot water production is prioritised ahead of heat and cooling.
  • Page 12 3.1.9 Auxiliary heat The auxiliary heater is included in DHP-AQ Midi and DHP-AQ Maxi and is available as an accessory for DHP-AQ Mini. An auxiliary heater consists of an immersion heater, which is located on the supply pipe ahead of the reversing valve.
  • Page 13 7–10°C. If the differences are greater or less, the heat pump is less efficient and savings are lower. The speed controlled circulation pump in DHP-AQ always ensures that the temperature difference is retained. The control equipment detects if the balance is upset and increases or decreases the speed of the circulation pump as necessary.

  • Page 14: Control System

    Control system The heat pump has an integrated control system which automatically calculates the heating and cooling demand in the house to ensure that the correct amount of heating and cooling is produced and emitted where necessary. The control panel is operated using a keypad and information is shown in a display and by an indicator.

  • Page 15: Display

    • Not lit, means that the heat pump is not powered. • When the green light shines continuously, the heat pump has power and is ready to produce heat, cooling or hot water. • Flashing green, means an active alarm. Display The display shows information about the heat pump’s operation, status and any alarms.
  • Page 16 Symbol Meaning Displayed when the fan is active. COOLING Displayed if cooling is produced. A = Active cooling. The following operating information may also appear: Message Meaning ROOM Shows the set ROOM value. Standard value: 20°C. If the accessory room sensor is installed it shows the actual temperature and the desired indoor temperature is shown within brackets.

  • Page 17: Main Menu

    Main Menu The display's INFORMATION menu is used to set and adjust the heat pump functions and is opened by pressing the left or right buttons. The appearance of the menu will vary depending on the menu selection made and connected accessories. The basic menu appears as follows: Sub-menus Return INFORMATION...

  • Page 18: Settings And Adjustments

    Settings and adjustments The installer carries out the basic settings of the heat pump at installa- tion. A number of settings and adjustments that you can carry out your- self are described below. Before changing the control computer’s settings, first find out what these changes mean.

  • Page 19: Adjusting The Indoor Temperature

    Operating Meaning mode HOT WATER In this mode the heat pump only produces hot water, no heat goes to the heating system. MANUAL TEST Only displayed when the value for MANUAL TEST is set to 2 in The SERVICE menu. Outputs that control components are activated manually.

  • Page 20: Parameter Description

    point that the control regulates against is lowered or raised respectively. When you increase the CURVE value, the heat curve will become steeper and when you reduce it, it will become flatter. This is the most energy and cost efficient way to set the indoor tempera- ture and should therefore be used for long term temperature settings.
  • Page 21 Parameter Description HEAT STOP This function stops all production of heat when the outdoor temperature is equal to, or higher than, the set heat stop value. SETBACK The temperature that will apply at temperature setback con- TEMP trolled from the CALENDAR menu. High temperatures in an underfloor heating system can damage parquet floors.

  • Page 22: Distribution Circuit 1 And 2

    Press either the + or - button once to open and change the ROOM value. Raise or reduce the ROOM value using the + or - buttons to change the indoor temperature. Wait ten seconds or press the left button once to exit the menu. Distribution circuit 1 and 2 In addition to the main circuit for heating and cooling two distribution circuits can be controlled individually.

  • Page 23: Reading Off Temperatures

    Reading off temperatures The set point value for the supply line and the OP. DATA OUTDOOR 0˚C max value of the return line is shown within ROOM 20˚C brackets The max value indicates the tempera- SUPPLY LINE 38(40)˚C RETURN LINE 34(55)˚C ture at which the compressor is stopped.

  • Page 24: Calendar

    Press either the right or left button once to open the INFORMA- TION menu. The cursor is in the OPERATION menu option. Press the down button to move the cursor to the DEFROST menu option. Open the menu by pressing the right button once. Press the down button to move the cursor to the MANUAL DEFROST menu option.

  • Page 25: Alarm History

    5.10 Alarm history NAME ALARM displays information about up to 10 alarms with type of alarm, time and date. User manual VUGFB102 – 23...

  • Page 26: Regular Checks

    Regular checks Checking operation During normal operation, the alarm indicator lights green continuously to show that everything is OK. When the alarm is triggered, it flashes green at the same time as a text message is shown in the display. Regularly check the alarm indicator to ALARM ensure that the installation is working...

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