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Danfoss DHP-H User Manual Download Page 44

Danfoss – 

VUBMA102

10 

Default settings in the control computer

The first column in the table below shows the parameters that can be adjusted by the User.  

The second column shows settings made at the factory, and the third column the settings 

made by the installation contractor in connection with installation of the heat pump.
Make sure that the installation contractor enters any settings made during installation that 

are particular to your heat pump. This will make it easier for you when you make your own 

adjustments.

Setting

Factory setting

Customer specific settings

ROOM

20°C

OPERATION

AUTO

CURVE

0°C

MIN

10°C

MAX

°C

CURVE 

0°C

CURVE 0

0°C

CURVE -

0°C

HEATSTOP

1°C

REDUCTION

2°C

Summary of Contents for DHP-H

Page 1: ...ion 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 Afte...

Page 2: ...VUBMA102...

Page 3: ...justing CURVE values 30 5 4 Adjusting a specific part of the heat curve 31 5 5 Setting MIN and MAX values 31 5 6 Setting HEATSTOP 31 5 7 Reading off temperatures 32 5 8 Calculating energy consumption...

Page 4: ...e electrical installation See the References section DANGER TO LIFE Only authorized refrigeration technicians may work on the refriger ant circuit See the References section 1 1 2 System modifications...

Page 5: ...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 age...

Page 6: ...ains an antifreeze water based mix that obtains and trans ports energy from the heat source to the heat pump This circuit is also known as the collector Figure 1 Function principles of a heat pump 1 A...

Page 7: ...ating system a low temperature system The heat pump supplies as much of the heat demand as possible before auxiliary heating is engaged and assists The Danfoss heat pump unit consists of five basic un...

Page 8: ...t DHP A The auxiliary heater is made up of an electric heating element on the supply pipe that has three outputs ADD HEAT 1 ADD HEAT 2 and ADD HEAT 3 and can be controlled in five steps Step 1 ADD HEA...

Page 9: ...alculating what the supply temperature should be for water that is sent out in the heating system The supply temperature is calculated from the outdoor tem perature and two adjustable values CURVE and...

Page 10: ...e CURVE value indicated which supply temperature the heating system is to have at an outdoor temperature of 0 C Figure 3 Graph showing the set value 40 for CURVE At outdoor temperatures colder than 0...

Page 11: ...ure is needed to increase the indoor temperature 1 Figure 5 Changing the ROOM value changes the heat curve upwards or downwards The relationship of the supply temperature to outdoor temperature will n...

Page 12: ...t are allowed for the supply temperature Adjusting the minimum and maximum supply temperatures is particularly important if your home has under floor heating If your house has under floor heating and...

Page 13: ...compressor and auxiliary heater During heat production the deficit reduces and when the heat pump stops the inertia in the system causes a surplus of heat The integral value is a measurement of the su...

Page 14: ...of the heat demand there is a value HYSTERESIS which controls the difference between the actual supply temperature t1 and the calculated supply temperature t2 If the difference is the same or greater...

Page 15: ...tion Figure 10 Principle solution for a brine installation Safety valve Pressure gauge Filler tap HW Hot water CW Cold water Exp Expansion HW Expansion tank To outlet Supply pipe Return pipe Safety va...

Page 16: ...lution for a piping installation Figure 12 Principle solution for a brine installation Supply pipe Return pipe Connection to any water heaters Flexible hoses Safety valve 3 bar Bleed and expansion tan...

Page 17: ...t pump NOTE The fluid level in the tank must be above the highest point of the outdoor unit Filling kit incl strainer Shut off valve Strainer Brine in Brine out Location of expansion tank pressure gau...

Page 18: ...a simple menu system that is used to navigate the desired settings and values Figure 15 Display control buttons and indicator for the heat pump Use the four control buttons on the keypad to navigate t...

Page 19: ...y the heat pump unit compressor is allowed to operate ADD HEAT The control computer only permits the auxiliary heater to be in opera tion This operating mode can be used when a new installation is bei...

Page 20: ...active L Low speed and H High speed Text Appears with applicable heat pump operating status text Message Meaning ROOM C Shows the set ROOM value Factory setting 20 C If the accessory room sensor is in...

Page 21: ...a faulty sensor HEATPUMP START Indicates that the compressor will start within 30 seconds The brine pump has started HEATPUMP ADD HEAT Indicates that heat production is active with both compressor and...

Page 22: ...igure 17 The main menu INFORMATION for DHP A with sub menus Use the up and down buttons to select the desired sub menu and open the menu by press ing the right button once To go back to the display s...

Page 23: ...ined otherwise there is a risk of frost damage By the customer if necessary AUTO The heat pump and the auxiliary heater are automatically controlled by the con trol computer By the customer if necessa...

Page 24: ...ature By the customer if necessary CURVE 5 Used to adjust the heat curve at an out door temperature of 5 C By the customer if necessary CURVE 0 Used to adjust the heat curve at an out door temperature...

Page 25: ...calcu lates the temperature required to maintain the indoor temperature RETURN PIPE Indicates the measured return tem perature of the heating system The highest permitted temperature is shown between...

Page 26: ...n Not adjustable ADD HEAT 1 Shows the total time in hours that the auxiliary heater 3 kW has been in opera tion since installation Not adjustable ADD HEAT 2 Shows the total time in hours that the auxi...

Page 27: ...tallation Not adjustable ADD HEAT 2 Shows the total time in hours that the auxiliary heater 6 kW has been in opera tion since installation Not adjustable ADD HEAT 3 Showsthe total time in hours that t...

Page 28: ...e of the compressor in minutes since last defrost Reset after a defrost is completed Not adjustable FAN H OFF AT Fan high speed is deactivated at this outdoor temperature and low speed is activated By...

Page 29: ...points in time over a 24 hour period 6 Adjust the ROOM value so that the reference room reaches your required indoor tem perature of 20 21 C Remember that other rooms will have different temperatures...

Page 30: ...ght button once An asterisk indicates the current operating mode 3 Mark the new desired operating mode using the up or down button 4 Press the right button once to confirm your choice The asterisk mov...

Page 31: ...o open the INFORMATION main menu The cur sor is in the OPERATION menu option 2 Press the down button to move the cursor to the HEATCURVE menu option 3 Open the menu by pressing the right button once T...

Page 32: ...re over the last hour is shown 6 Press the left button three times to exit the menu To view the TEMPERATURE history 1 Press either the right or left button once to open the INFORMATION main menu The c...

Page 33: ...3 03 kW 3 43 kW 5 11 kW DHP C 4 5 6 7 8 10 Under floor heating 1 15 kW 1 40 kW 1 59 kW 1 70 kW 2 00 kW 2 55 kW Radiators 1 30 kW 1 55 kW 1 88 kW 1 95 kW 2 36 kW 3 03 kW To calculate the energy consump...

Page 34: ...pressing the right button once 4 Note how many hours the following values have HEAT PUMP ADD HEAT 1 ADD HEAT 2 and ADD HEAT 3 5 Find the value for the average output that corresponds to your heat pump...

Page 35: ...in the display Figure 18 Flashing alarm indicator in the event of an alarm Regularly check the alarm indicator to ensure that the installation is working correctly It is not always the case that you w...

Page 36: ...P A for more information about the location of the expansion tank Always call your installer for refilling of brine see the References section 6 3 Checking the water level in the heating system The li...

Page 37: ...the overflow pipe If a safety valve does not work properly it must be replaced Contact an authorized installer see the References section The opening pressure of the safety valves is not adjustable 6...

Page 38: ...an be extended if there is evidence that cleaning twice a year is not necessary Figure 21 Strainer in the filling kit To clean the strainer 1 Switch off the heat pump 2 Remove the insulation around th...

Page 39: ...hat the control computer can use when calculating the heat demand In the normal mode the room temperature sensor s display shows the actual indoor tem perature The outdoor temperature may appear if bo...

Page 40: ...loor loop thermo stats Air in the heating system Blocked strainer in the heating system Open radiator floor loop thermo stats Top up and bleed the heating system or contact your installer MOTOR P ERRO...

Page 41: ...house Contact your installer HIGH RETURN The temperature of the water that returns from the radiators is too high and prevents the heat pump from working Insufficiently opened radiator floor loop the...

Page 42: ...fer fluid circuit See the About your heat pump section for further information CURVE The CURVE value is set via the display The set value indicates the supply temperature of the water that is transpor...

Page 43: ...uid circuit The fluid circuit obtains heat energy from the refrigerant circuit which it then transports to the water tank or heating system See the About your heat pump section for further information...

Page 44: ...e by the installation contractor in connection with installation of the heat pump Make sure that the installation contractor enters any settings made during installation that are particular to your he...

Page 45: ...References Installation and commissioning have been carried out by Piping installation Date Company Name Telephone no Electrical Installation Date Company Name Telephone no System adjustment Date Com...

Page 46: ...VUBMA102...

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