Danfoss DHP-H Installation And Service Instructions Manual Download Page 3

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VMBMA602

Contents

Installation instructions ................... 4

1 Important information/Safety regulations . . . . . . . . . . . . . . . . . . 4

1.1

Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.2

Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.3

Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

1.4

Control and safety devices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2 Heat pump information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.1

DHP-H . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

2.2

DHP-H Opti Pro. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

2.3

DHP-C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

2.4

DHP-L, DHP-L Opti. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

2.5

DHP-A, DHP-A Opti . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

2.6

DHP-AL, DHP-AL Opti . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

2.7

Package contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

2.8

Heat pump control panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.9

Transporting the heat pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.10 Space requirement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.11 Recommended location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

2.12 Space requirement, outdoor unit, DHP-A, -AL. . . . . . . . . . . . . . . . . . . . . 20

2.13 Recommended location of outdoor unit, DHP-A, -AL . . . . . . . . . . . . . 20

3  Drilling holes for brine pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4  Separating the heat pump  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
5  Unpacking and installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.1

Setting up. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.2

Removing the front cover. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

5.3

Unpacking and installing the outdoor unit . . . . . . . . . . . . . . . . . . . . . . . 22

6 Piping installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.1

VL system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24

6.2

D system, DHP-L. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.3

VLD system, DHP-A, -AL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

6.4

Safety valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.5

Connecting cold and hot water pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27

6.6

Connecting the heating system supply and return lines . . . . . . . . . . 27

6.7

Filling the water heater and heating system . . . . . . . . . . . . . . . . . . . . . . 28

6.8

Bleeding the heating system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7 Electrical Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

7.1

Connect power supply, 400V 3N . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.2

Connect power supply, 230V 1N SP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.3

Position and connect outdoor sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . 29

7.4

Changing the language in the control computer . . . . . . . . . . . . . . . . . 29

7.5

Resetting to system D or VLD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

7.6

Changing the number of auxiliary heating power stages . . . . . . . . . 30

7.7

Connect outdoor unit, DHP-A, -AL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

8 Brine installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8.1

Heat sources . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

8.2

Information collector pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.3

Connection to outdoor unit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.4

Connection of several brine coils. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

8.5

Connection diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

8.6

Installing brine pipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.7

Filling the brine system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34

8.8

Bleeding the brine circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

8.9

Vent outdoor unit, DHP-A, -AL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35

9 Installing accessories/additional functions . . . . . . . . . . . . . . . . . 36

9.1

Room temperature sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

9.2

EVU function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

9.3

Tariff control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

9.4

Flow switch/level switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

9.5

Higher hot water temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

10 Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

10.1 Installation checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

10.2 Manual test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37

10.3 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

10.4 Installing the front cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

10.5 After start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38

11 Customer information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39

Service instructions .......................... 40

12 The heat pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

12.1 Function description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

12.2 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40

12.3 Outdoor unit and defroster function, DHP-A, -AL models . . . . . . . . . 41

12.4 Passive cooling function, DHP-C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.5 Speed control, Opti models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.6 HGW technology, DHP-H Opti Pro. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.7 Auxiliary heating, DHP-H, -L, -C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.8 Auxiliary heating DHP-A, -AL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42

12.9 Water heater, DHP-H, -C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

12.10 Water heater, DHP-A, -AL. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

12.11 Important parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44

13 Control computer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

13.1 Function description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

13.2 Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

14 Menus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

14.1 Main menu INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

14.2 Main menu SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56

15 Troubleshooting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

15.1 Alarm list. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

15.2 Measurement points. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63

15.3 Check points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64

15.4 Operational problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 65

16 Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86

Summary of Contents for DHP-H

Page 1: ...VMBMA602 Installation and Service instructions DHP H DHP L DHP A DHP AL DHP C...

Page 2: ...d during installation operation and maintenance Danfoss AS s liability according to the applicable warranty is not binding 2008 Copyright Danfoss AS Danfoss AS retains the right to make changes to com...

Page 3: ...ing to system D or VLD 30 7 6 Changing the number of auxiliary heating power stages 30 7 7 Connect outdoor unit DHP A AL 30 8 Brine installation 31 8 1 Heat sources 31 8 2 Information collector pipe 3...

Page 4: ...In normal use and normal conditions the refrigerant has low toxic ity However although the toxicity of the refrigerant is low it can cause injury or be highly dangerous in abnormal circumstances or wh...

Page 5: ...n the front panel is flashing and an alarm text is displayed Restart the heat pump by first setting the operational mode to OFF and then back to previous mode AUTO HEATPUMP ADD HEAT HOT WATER Brine ci...

Page 6: ...e heat pump Position Name 1 Brine in 28 Cu 2 Brine out 28 Cu 3 Heating system supply line 22 Cu 4 10 kW 28 Cu 12 16 kW 4 Heating system return line 22 Cu 4 10 kW 28 Cu 12 16 kW 5 Expansion line 22 Cu...

Page 7: ...xiliary heating immersion heater 8 Brine in 9 Heating system supply line 10 Brine out 11 Brine pump brine system 12 Drying filter 13 Expansion valve 14 Hot water temperature sensor displays maximum te...

Page 8: ...Cu 2 Brine out 28 Cu 3 Heating system supply line 22 Cu 4 10 kW 28 Cu 12 16 kW 4 Heating system return line 22 Cu 4 10 kW 28 Cu 12 16 kW 5 Expansion line 22 Cu 6 Hot water line 22 Brass 7 Cold water...

Page 9: ...ng immersion heater 8 Brine in 9 Heating system supply line 10 Brine out 11 Brine pump brine system 12 Drying filter 13 Expansion valve 14 Hot water temperature sensor displays maximum temperature 15...

Page 10: ...Dimensions and connections Figure 8 Position Name 1 Brine in 28 Cu 2 Brine out 28 Cu 3 Supply line heating system 22 Cu 4 Return line heating system 22 Cu 5 Expansion line 22 Cu 6 Hot water line 22 Br...

Page 11: ...t cooling 7 Exchange valve heating hot water 8 Supply line sensor 9 Heating system circulation pump 10 Auxiliary heating immersion heater 11 Brine in 12 Heating system supply line 13 Brine out 14 Brin...

Page 12: ...ensions and connections Figure 10 Position Name 1 Brine in 28 Cu 2 Brine out 28 Cu 3 Heating system supply line 22 Cu 4 10 kW 28 Cu 12 16 kW 4 Heating system return line 22 Cu 4 10 kW 28 Cu 12 16 kW 5...

Page 13: ...aporator insulated 5 Heating system circulation pump 6 Supply line sensor heating system 7 Brine out 8 Brine pump brine system 9 Drying filter 10 Expansion valve 11 Control panel for control equipment...

Page 14: ...outlet brine circuit DN25 int 10 Safety valve for temperature and pressure mounted only on cer tain models see chapter 6 Outdoor unit Dimensions and connections Figure 13 Position Name 1 Brine in from...

Page 15: ...ne pump brine system 10 Brine in 11 Drying filter 12 Expansion valve 13 Brine out to outdoor unit 14 Hot water temperature sensor displays maximum temperature 15 Control panel for control equipment 16...

Page 16: ...ing defrosting 28 Cu 12 Domestic hot water 22 Cu 13 Cold water 14 Supply to water heater coil 15 Brine expansion outlet when outdoor unit is positioned at high level 16 Lead in sensor lead 17 Safety v...

Page 17: ...13 Brine in to defrosting tank during defrosting 14 Condenser 15 Compressor 16 Low pressure pressostat 17 Operating pressostats 18 High pressure pressostat Water heater components and connections Figu...

Page 18: ...824 1 Expansion and bleed tank without valve 086U0026 5 Rubber collar hole 22 32mm 086U6033 2 Flex hose DN20 L 550 086U6006 1 Filling device brine DN25 086U6005 1 Dirt filter with shut off DN20 Sizes...

Page 19: ...n its back should be as short as possible After the heat pump has been lifted up again it must stand upright for at least an hour before commissioning 2 10 Space requirement To facilitate the installa...

Page 20: ...labs or cast footings 3 Drilling holes for brine pipes NOTE Ensure that the holes for the insert pipes are posi tioned so that there is room for the other installations NOTE The brine pipes shall have...

Page 21: ...orward and then upwards and outwards to remove them Covers Figure 27 8 Slacken off the screws that hold the rear panel and remove it 9 Disconnect the electrical connectors at the exchange valve cir cu...

Page 22: ...el 2 Tilt the front cover outwards 3 Lift the front cover upwards to remove it from the heat pump 5 3 Unpacking and installing the outdoor unit Applies to DHP A AL The outdoor unit is packed and deliv...

Page 23: ...nt cover Use only the three screws screwed into the outdoor unit see figure below Use only 3 x M6x15 torx TX25 Secure the cover Figure 36 Assembling the cover and cover plate 15 Hook the cover at the...

Page 24: ...omponents and parts included in the delivery in italics Selecting the heating system The heat pump is set to VL system on delivery that is with an inte grated electrical auxiliary heater and an exchan...

Page 25: ...pipe connection DHP L Figure 44 DHP AL connection diagram VL system General connection diagram DHP AL Figure 45 Position Name 1 Supply line 2 Return line 3 Heat pump part of the delivery 4 Safety valv...

Page 26: ...but with an external auxiliary heater often a boiler that is fired with solid fuel in combi nation with a DHP A or DHP AL DHP A s integrated exchange valve is replaced by an exchange valve that is loc...

Page 27: ...t water pipes with all the neces sary components according to the connection diagram for the relevant system 6 6 Connecting the heating system supply and return lines All pipes should be routed in suc...

Page 28: ...nently routed cables It must be possible to isolate the power supply using an all pole circuit breaker with a minimum contact gap of 3 mm The maximum load for externally connected units is 2A Electric...

Page 29: ...ould be positioned between the second and third storeys Its location must not be completely protected from the wind but not in a direct draft The outdoor sensor should not be placed on reflective pane...

Page 30: ...ted quick connector 9 Move the supply line sensor out to the position shown in the connection diagram for the VLD system In the control computer To change to system D or VLD 1 Ensure that the main cir...

Page 31: ...r and is then returned through another borehole The heat pump has a short brine circuit that works directly against the separate groundwater exchanger Ground water as heat source Figure 60 When ground...

Page 32: ...f high liquid speeds with risk of corro sion noise problems 8 4 Connection of several brine coils When several brine coils are used for a heat pump installation regardless of what heat source is used...

Page 33: ...e 1 5 bar 9 Bleed and expansion tank 10 Shut off valve DHP A General connection diagram brine pipes DHP A Figure 67 Position Name 1 Brine in 2 Brine out 3 Shut off valve 4 Shut off valve 5 Shut off va...

Page 34: ...ated Applies to DHP A AL Bear in mind that the outdoor unit may move during defrosts use flexible hoses to connect the pipes from the heat pump and pipes on the outdoor unit 8 7 Filling the brine syst...

Page 35: ...e to 0 at the same time leave the external pump running 14 Open valve 4 with the external pump running to eliminate the air between the valves 3 and 5 15 Close valve 3 and pressurise the system using...

Page 36: ...or it is calibrated by holding in both buttons for 15 seconds until the display starts to flash 5 Set the actual room temperature that the thermometer shows 6 Wait 10 seconds until the display stops f...

Page 37: ...nector on brine in Insulation in the outside wall lead in Other brine pipe insulation Bleeding of brine system Leakage inspection 10 2 Manual test Test operate and at the same time check the function...

Page 38: ...comes out when it is removed 2 Insert a flat blade screwdriver and turn it in the direction of rotation of the pump clockwise 3 Reinstall the bleed screw with its rubber seal Adaptation to the heatin...

Page 39: ...e actions Demonstrate how to navigate the control computer and which settings the customer can set themselves Demonstrate how to view history and operating times Show the pipe installation and go thro...

Page 40: ...oduced during this process is released by the slightly heated brine 3 The refrigerant that now contains a large quantity of energy in the form of heat is transferred to the compressor which both incre...

Page 41: ...g operation the coil is cooled by the energy exchange at the same time as the humidity causes it to become covered in frost DHP A AL models have an automatic function to defrost the coil using the pro...

Page 42: ...s that a flow over the de superheater to the water heater The flow through the shunt is continuously regulated by the heat pump control by sending opening or closing pulses to the shunt 12 7 Auxiliary...

Page 43: ...ionella function tries again In the control computer s TEMPERATURE menu a number of measured and calculated temperatures for the hot water and supply are displayed The current hot water temperature 2...

Page 44: ...E by means of a graph in the display You can set the heat curve by adjusting the CURVE value The CURVE value indicates the supply temperature of the water to be sent out to the heating system at an ou...

Page 45: ...sed for a temporary raise or drop For long term increases or reductions of the indoor temperature the heat curve is adjusted instead Sometimes at outdoor temperatures between 5 C and 5 C part of the h...

Page 46: ...he time interval between the measurement points can be adjusted between one minute and one hour factory setting is one minute History is available for all sensors but only the set value is shown in th...

Page 47: ...t2 If the difference is the same or greater than the set HYSTERESIS value x i e there is a heat demand or the heat demand disappears quicker than the usual integral calculation the integral value is f...

Page 48: ...he value for DEFR CURVE 0 and DEFR CURVE 20 by means of a graph in the display Graph that shows how the value for DEFR CURVE 0 can be set Figure 89 The value for OUTDOOR STOP that is set means that th...

Page 49: ...the menus and increase or reduce the set values An up button with a plus sign A down button with a minus sign A right button with a right arrow A left button with a left arrow The display always show...

Page 50: ...ls Symbol Meaning HP Indicates that the compressor is in operation LIGHTNING Indicates that the auxiliary heater is in operation Number of auxiliary power stages indicated by digit HOUSE Indicates tha...

Page 51: ...he motor protection has deployed BRINEFLOW LOW Appears if the accessory flow switch is installed Alarm that indicates that the flow in the brine system is low SENSOR Alarm that indicates a faulty sens...

Page 52: ...HEATPUMP ADD HEAT HOT WATER MANUAL TEST HEATCURVE CURVE MIN MAX CURVE 5 CURVE 0 CURVE 5 HEATSTOP REDUCTION ROOM FACTOR POOL POOL HYSTERESIS HEAT CURVE 2 Expansion card CURVE 2 MIN MAX TEMPERATURE OUT...

Page 53: ...f 5 C Shown in the graph for CURVE 0 C interval 5 C 5 C CURVE 0 Local increase or reduction of CURVE at an outdoor temperature of 0 C Shown in the graph for CURVE 0 C interval 5 C 5 C CURVE 5 Local in...

Page 54: ...STOPP 5 is shown within brackets Return line Shows the actual return temperature The stop temperature MAX RETURN is within brackets HOT WATER Shows the actual hot water temperature INTEGRAL Shows the...

Page 55: ...The operating time of the compressor in minutes between the 2 last defrosts TIME SINCE DEFROST The operating time of the compressor in minutes since last defrost FAN H OFF AT Fan high speed is deacti...

Page 56: ...PUMP BRINE PUMP CIRC PUMP REV V HOT WATER SHUNT 1 AUX HEAT 1 AUX HEAT 2 AUX HEAT 3 SHUNT DEFR FAN L FAN H EXT AUX HEATER ALARM SHUNT COOLING SHUNT GROUP HGW SHUNT PASSIVE COOLING ACT COOLING REV V PO...

Page 57: ...ther infor mation 60 interval 5 250 HYSTERESIS If the difference between the actual supply temperature and the calculated sup ply temperature is too great either the integral value is set to start val...

Page 58: ...pplies to the VL system The value is read off by the hot water sensor 60 C interval 50 C 65 C Sub menu SERVICE MANUAL TEST Used to manually test and test operate the heat pump s components or signal o...

Page 59: ...SWEDISH Language setting for the control computer SWEDISH SVENSKA NORSK SUOMI DEUTSCH NEDERLANDS ENGLISH FRANCAIS POLSKI DANSK SYSTEM NOTE The menu selec tion in the SYSTEM menu varies depending on t...

Page 60: ...e cooling 90S interval 10S 90S BRINE TIME OFF Switch off delay for brine pump in seconds 30S interval 10S 60S TOPH TIME Deactivates time period for peak heating charging does not apply to system D ON...

Page 61: ...nd 10 is high volt age 10V interval 3V 10V CONST FL CIRC If TEMP DIFF CIRC is set to XX the flow is continuous with this value in the heat ing system Value indicated in Volts 7V interval 3V 10V CONST...

Page 62: ...AL DELAY Delay of integral calculation in seconds after the integral value for HGW has been reached 10S interval 5S 120S HGW SHUNT TIME The time that the signal is active to open or close the HGW shun...

Page 63: ...RETURN Return sensor fault Return temperature Supply line 5 is used Calculated supply tem perature limited to maximum 45 C SENSOR HOT WATER Fault on sensor for start temperature No hot water producti...

Page 64: ...UBE R404A 12 0 kW From fully closed position screw 5 25 turns out Danfoss TUBE R404A 15 3 kW From fully closed position screw 2 75 turns out Danfoss TUBE R407C 11 0 kW From fully closed position screw...

Page 65: ...of ice under and around the outdoor unit 85 Problem Water run off by the outdoor unit risk of moisture problems in house foundations 85 Problem Alarm LP low pressure pressure switch Cause Troubleshoot...

Page 66: ...d that the bulb is correctly installed If the overheating reading does not cor respond with the instructions for the specific refrigerant adjust the expansion valve until the correct value is obtained...

Page 67: ...does not open Incorrect pressure switch installed Same or higher break pressure than high pressure pres sure switch See marking Pressure switch fault opens at a higher pres sure than indicated mark p...

Page 68: ...for example try blowing nitrogen through it to release the oil If this does not work it must be replaced Problem Alarm MS motor protection Cause Troubleshooting Remedy 1 Phase drop or blown fuse Check...

Page 69: ...e the incorrect sequence When the compressor is running check the delivery pipe temperature by feeling the deliv ery pipe that should be hot not just warm even a little distance from the compressor if...

Page 70: ...st the ohm table in the Measurement points section If the sensor is defective replace it 2 Brine temperature too low Check the set value on ALARM BRINE in the heat pump s control computer The alarm is...

Page 71: ...uctions for the specific refrigerant adjust the expansion valve until the correct value is obtained See separate instructions for cooling techniques If overheating cannot be adjusted with the expansio...

Page 72: ...the winter water surrounding the hoses in the borehole can freeze In some cases the ice can push against the hoses slightly Due to the reduction in volume in the hose the anti freeze fills the expansi...

Page 73: ...ne whether the compressor is unu sually loud If the compressor is defective replace it Problem Shrieking whistling noise Cause Troubleshooting Remedy 1 Whistling expansion valve 1 Take overheating rea...

Page 74: ...Check that the start temperature is correctly set Should not be set above the factory set value If the start value is set too high reduce it to the factory set value If the system has a high 8 C brine...

Page 75: ...ng Remedy 1 The heat pump s control computer is not set adjusted to the customer s require ments wishes Check the ROOM and CURVE and MAX set tings Adjust incorrect values in the heat pump s control co...

Page 76: ...MAXSTEP 5 15 kW only DHP A Check the set value on MAXSTEP in the heat pump s control computer If necessary adjust the MAXSTEP value in the heat pump s control computer MAXSTEP 1 3 kW MAXSTEP 2 6 kW M...

Page 77: ...the outdoor temperature 2 Sensor fault OUTDOOR ROOM Supply line Check what the relevant sensor shows is it a plausible actual value Measure the resistance of the sensor check against the ohm table in...

Page 78: ...ear external doors windows and heat sources Install the outdoor sensor according to the instructions and calibrate it if necessary OTHER Problem The heat pump runs and runs but never stops Cause Troub...

Page 79: ...eck what the return line sensor shows is it a plausible actual value If not take a resistance reading from the sensors and check against the ohm table in the Measurement points section If the MAX RETU...

Page 80: ...mpressor has been stopped by the operating pressure switch or delivery pipe sensor Check if a square appears in the display s lower let corner if so the operating pres sure switch is open or the deliv...

Page 81: ...heck what the difference between the supply and return line is using a thermometer t The difference should not be more than 4 C A greater t results in reduced efficiency in the heat pump If the differ...

Page 82: ...pipe temperature gets so hot that the compressor stops start by leak tracing the unit Rectify the leak if a leak is found If no leak is found try draining and refilling the unit and then restarting th...

Page 83: ...re appears to be a leak in the refriger ant circuit carry out leak tracing and any necessary corrective action If leak tracer is not available brush soap water on the suspected leak and look for bubbl...

Page 84: ...itioning the outdoor unit Determine whether the outdoor unit can be moved to a more suitable location When positioning the outdoor unit its direction does not affect its performance The outdoor unit d...

Page 85: ...ing cable may have to be installed in the drainpipe Problem Water run off by the outdoor unit risk of moisture problems in house foundations Cause Troubleshooting Remedy Insufficient drainage During s...

Page 86: ...iliary heater compressor off 7 15 kW auxiliary heater compressor off 8 Nominal flow heating circuit 10K cooling circuit 3K 9 Pressure drop that must not be exceeded outside the heat pump without the n...

Page 87: ...compressor off 7 15 kW auxiliary heater compressor off 8 Nominal flow heating circuit 10K cooling circuit 3K 9 Pressure drop that must not be exceeded outside the heat pump without the nominal flow b...

Page 88: ...iary heater compressor off 7 15 kW auxiliary heater compressor off 8 Nominal flow heating circuit 10K cooling circuit 3K 9 Pressure drop that must not be exceeded outside the heat pump without the nom...

Page 89: ...heater compressor off 7 15 kW auxiliary heater compressor off 8 Nominal flow heating circuit 10K cooling circuit 3K 9 Pressure drop that must not be exceeded outside the heat pump without the nominal...

Page 90: ...5 kW 7 Pressure drop that must not be exceeded outside the heat pump without the nominal flow being reduced For the cooling circuit these values require a pipe of 40x2 4 8 Nominal flow heating circuit...

Page 91: ...pump with 9 kW auxiliary heater 1 N 4 5 kW 7 Pressure drop that must not be exceeded outside the heat pump without the nominal flow being reduced For the cooling circuit these values require a pipe of...

Page 92: ...kW auxiliary heater 1 N 1 5 kW 5 Heat pump with 6 kW auxiliary heater 1 N 3 kW 6 Heat pump with 9 kW auxiliary heater 1 N 4 5 kW 7 Pressure drop that must not be exceeded outside the heat pump withou...

Page 93: ...ry heater 1 N 4 5 kW 7 Pressure drop that must not be exceeded outside the heat pump without the nominal flow being reduced For the cooling circuit these values require a pipe of 40x2 4 8 Nominal flow...

Page 94: ...ry heater 1 N 1 5 kW 5 Heat pump with 6 kW auxiliary heater 1 N 3 kW 6 Heat pump with 9 kW auxiliary heater 1 N 4 5 kW 7 Pressure drop that must not be exceeded outside the heat pump without the nomin...

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Danfoss DHP-H, Installation And Service Instructions Manual

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