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USER MANUAL
DHP-AX
Navigate through the control computer's menu using:
To increase or reduce the set values use:
or
To adjust the room temperature: start by pressing
The degree information that now appears in the display is the last
desired room temperature.
To increase the temperature: press
To lower the temperature: press
The temperature you now require is registered immediately.
(After approximately ten seconds the desired room temperature
appears in the display again, together with other information.)
The heat pump now starts to work to reach the new temperature.
Want to know more? Read the User manual!
VUBMI102
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Table of Contents
Related Manuals for Danfoss DHP-AX
Summary of Contents for Danfoss DHP-AX
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Page 1: User Manual
USER MANUAL DHP-AX Navigate through the control computer’s menu using: To increase or reduce the set values use: To adjust the room temperature: start by pressing The degree information that now appears in the display is the last desired room temperature. - Page 2 DHP-AX – 2 VUBMI102...
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Page 3: Table Of Contents
........44 VUBMI102 DHP-AX – 3... - Page 4 These instructions are valid for the following model of Danfoss heat pump: DHP-AX If these instructions are not followed during installation, operation and mainte- nance, Danfoss AS’s liability according to the applicable warranty is not binding. Danfoss AS retains the right to make changes to components and specifications without prior notice.
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Page 5: Important Information
FATAL DANGER! Only authorized refrigeration technicians may work on the refrigerant circuit. (See the ”13 References” section.) 1.1.2 System modifications Only authorized installers may carry out modifications on the following compo- nents: The heat pump unit VUBMI102 DHP-AX – 5... -
Page 6: Protection
Protection 1.2.1 Corrosion Protection Due to the risk of corrosion, avoid using different types of sprays in the vicinity of the heat pump. This particularly applies to: Solvents Chlorinated cleaning agents Paints Adhesives DHP-AX – 6 VUBMI102... -
Page 7: About Your Heat Pump
Enclosed heating system through evaporation, refrigerant compression and condensation. Air heat exchanger Outdoor air together in the transfer of heating energy. Figure 2: Function principles of a heat pump. VUBMI102 DHP-AX – 7... -
Page 8: Components
DHP-AX is a complete heat pump installation for heating. It can be supplemented with a water heater and auxiliary heater. DHP-AX is equipped with a control system, which is controlled via a control panel. Heat enters the house via a water borne heating system. -
Page 9: Heating And Defrost Functions
During operation the air heat exchanger is cooled by the energy exchange at the same time as the humidity causes it to become covered in frost. DHP-AX has an automatic function to defrost the air heat exchanger using the produced heat ener- gy. -
Page 10: Auxiliary Heat
Auxiliary heat Auxiliary heater is an option for DHP-AX and consists of an immersion heater, which is located on the supply pipe ahead of the exchange valve. The auxiliary heater, which is supplied as an accessory has an integrated power con- trol and is controlled by a potential free output from the heat pump. - Page 11 The most energy efficient and cost effective setting is achieved by changing the CURVE value to adjust the temperature in the house to an even and constant tem- perature. For a temporary increase or reduction, adjust the ROOM value instead. VUBMI102 DHP-AX – 11...
- Page 12 This method of adjusting the indoor temperatures can be used for a temporary raise or drop. For long term increases or reductions of the indoor temperature, the heat curve is adjusted instead. DHP-AX – 12 VUBMI102...
- Page 13 If your house has under floor heating and parquet floors, the supply temperature must not be too high. Otherwise there is a risk that the parquet floors might be VUBMI102 DHP-AX – 13...
- Page 14 When the integral value has reached the set value for INTEGRAL A1, the compressor starts and if the integral value does not drop but continues to rise, the auxiliary heater starts when the integral value has reached the set value for INTEGRAL A1+A2. DHP-AX – 14 VUBMI102...
- Page 15 Figure 8: Starting and stopping heat pump operation based on integral values. The integral value calculation stops during hot water production and during heat stop. Integral value calculation resumes two minutes after completed hot water pro- duction to give the heating system time to stabilise the temperature. VUBMI102 DHP-AX – 15...
- Page 16 The two parameters that are mainly changed are DEFR CURVE 0 and DEFR CURVE -16. The numbers behind the DEFR CURVE display what outdoor temperature the setting is for, that is to say at 0°C for DEFR CURVE 0 and -16 for DEFR CURVE -16. The DHP-AX – 16 VUBMI102...
- Page 17 OUTDOOR STOP. The setting for DEFR CURVE –20 means that the value OUTDOOR STOP (-16°C) is reduced by between 1 and 5 degrees. This also deter- mines how much lower the temperature for the refrigerant return may be than -16°C in this case. VUBMI102 DHP-AX – 17...
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Page 18: Control Panel
The control system is controlled using a user-friendly menu system, which is shown in the display. Use the keypad’s four navigation symbols to navigate the menus and increase or reduce the set values: DHP-AX – 18 VUBMI102... - Page 19 The menu, INFORMATION, is opened by pressing the left or right buttons. The INFORMATION menu has a number of sub menus that are described in section “5 Menu information”. The display always shows the set ROOM value and the status of the heat pump. VUBMI102 DHP-AX – 19...
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Page 20: Display
Indicates that the compressor is in operation. An “F” next to the symbol indicates that a flow switch is installed. LIGHTNING Indicates that the auxiliary heater is in operation. HOUSE Indicates that the 3-way valve position is for heat production for the house. DHP-AX – 20 VUBMI102... - Page 21 EVU is active. NO HEAT Indicates that there is no heating production demand. DEMAND HIGH Alarm that indicates that the high pressure switch has deployed. PRESSURE ERROR VUBMI102 DHP-AX – 21...
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Page 22: Menu Information
The control computer’s menu, INFORMATION, is opened by pressing the right or left button once. Figure 13: The INFORMATION menu for DHP-AX models with its sub menus. Use the up and down buttons to select the desired sub-menu and open the menu by pressing the right button once. - Page 23 HOT WATER The control computer permits operation By the customer, if with heat pump for hot water production necessary. and auxiliary heater during peak heat charging (anti-legionella function). No heating goes to heating system. VUBMI102 DHP-AX – 23...
- Page 24 1-3 and for radiator heating between 2-4. POOL The temperature in the pool is controlled By the customer, if (Only displayed if by a separate sensor regardless of the necessary. an Expansion card is heating and hot water system. installed) DHP-AX – 24 VUBMI102...
- Page 25 Minimum permitted shunt group tempe- Authorized installer. rature, if the temperature for heat stop Adjusted for each instal- has not been reached. lation. Maximum permitted shunt group tem- Authorized installer. perature. Adjusted for each instal- lation. VUBMI102 DHP-AX – 25...
- Page 26 The calculated value for inte- gral displays the heating system’s actual energy balance. Read section ”3 Regulation information” for more information. REFR 1 Shows the actual temperature of the Not adjustable refrigerant. DHP-AX – 26 VUBMI102...
- Page 27 The calculated supply temperature to the shunt group is within brackets. CURRENT Shows the actual current consumption. Not adjustable (Only displayed if The set value for MAX CURRENT is shown an Expansion card between brackets. is installed) VUBMI102 DHP-AX – 27...
- Page 28 HOT WATER Shows a part of the time that is included Not adjustable in the HEAT PUMP value. The number of hours that hot water production has been in operation since installation are shown here. DHP-AX – 28 VUBMI102...
- Page 29 MANUAL DEFR By using the right-hand arrow and By the customer, if then pressing +, defrost can be started necessary. manually. During defrost, hot refrigerant circulates to the air heat exchanger. VUBMI102 DHP-AX – 29...
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Page 30: Trimming The Heating System
When the reference room has an even temperature of 20-21°C over a 24 hour period, you can adjust the radiator valves in the other rooms so that their indoor temperatures are the same temperature or lower than the reference room. DHP-AX – 30 VUBMI102... -
Page 31: Instructions
Press either the up or the down button once to open and change the ROOM value. Raise or reduce the ROOM value using the up or down buttons to change the indoor temperature. Wait ten seconds or press the left button once to exit the menu. VUBMI102 DHP-AX – 31... -
Page 32: Adjusting Curve Values
Raise or reduce the value with the up or down buttons. Press the left button three times to exit the menu. Repeat the procedure to change the MAX value, but select MAX instead of MIN at step 4. DHP-AX – 32 VUBMI102... -
Page 33: Setting Heat Stop
Move the cursor along the time axis using the up (plus) or down (minus) but- tons. An exact value at the relevant time is shown at the top of the display. Press the left button three times to exit the menu. VUBMI102 DHP-AX – 33... -
Page 34: Manual Defrost
Manual defrost If DHP-AX requires defrosting you can run a defrosting procedure manually from the control computer. To defrost manually: Press either the right or left button once to open the INFORMATION menu. The cursor is in the OPERAT. menu option. -
Page 35: Regular Checks
You can use normal tap water when topping up the heating system. In certain exceptional cases the water quality may be so poor (for example very hard water) that it is not suitable for filling the heating system. If unsure, contact your installer, see section “13 References”. VUBMI102 DHP-AX – 35... -
Page 36: Checking The Safety Valve
The heat pump must be switched off at the main switch before cleaning can be started. The brine circuit’s strainer must be cleaned twice a year after installation. The interval can be extended if there is evidence that cleaning twice a year is not necessary. DHP-AX – 36 VUBMI102... - Page 37 Remove the strainer. Rinse the strainer. Reinstall the strainer. Check that the o-ring on the cover is not damaged. Screw the cover back into place. Turn the shut-off cock to the open position. Start the heat pump. VUBMI102 DHP-AX – 37...
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Page 38: Accessories
°C rature, °C °C In the event of a surplus of heat the conditions are the opposite: Increased Actual room Set point for ROOM FACTOR room tempe- temperature, supply line, °C rature, °C °C DHP-AX – 38 VUBMI102... -
Page 39: Troubleshooting
Contact your SENSOR culate the supply temperature’s installer. desired value, use 0°C instead. SUPPLY LINE Supply line sensor error. Electrical fault. Contact your SENSOR Everything stops except the installer. circulation pump for the hea- ting system. VUBMI102 DHP-AX – 39... - Page 40 HIGH RETURN The temperature of the water Insufficiently ope- Ensure that all that returns from the radiators ned radiator/floor thermostat valves is too high and prevents loop thermostats. are fully open. the heat pump from working DHP-AX – 40 VUBMI102...
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Page 41: Terms And Abbreviations
The control computer determines the correct temperature of the water to be distributed to the heating system based on the heat curve. The indoor temperature is adjusted by changing the gradient of the heating system’s CURVE. VUBMI102 DHP-AX – 41... -
Page 42: Default Settings In The Control Computer
This will make it easier for you when you make your own adjustments. Setting Factory setting Any customer specific settings ROOM 20°C OPERAT. AUTO CURVE 40°C 10°C 55°C CURVE 5 0°C CURVE 0 0°C CURVE -5 0°C HEAT STOP 17°C DHP-AX – 42 VUBMI102... -
Page 43: References
Function test safety valve Control computer Basic settings Test operation Manual test carried out Noise check Customer information: Control computer, menus, User manual Checking and filling, heating system Alarm information Function test safety valve Strainers, cleaning Trimming information Warranties VUBMI102 DHP-AX – 43... -
Page 44: Installation Carried Out
13.2 Installation carried out PIPE INSTALLATION Date Company Name Tel. No. ELECTRICAL INSTALLATION Date Company Name Tel. No. DHP-AX – 44 VUBMI102... - Page 45 VUBMI102 DHP-AX – 45...
- Page 46 VUBMI102...