Danfoss DHP-AT User Guide


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Danfoss DHP-AT User Guide | Manualzz

MAKING MODERN LIVING POSSIBLE

User Guide

DHP-AT

www.heating.danfoss.com

The English language is used for the original instructions.

Other languages are a translation of the original instructions.

(Directive 2006/42/EC)

© 2011 Copyright Danfoss A/S

User Guide DHP-AT

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Table of Contents

Foreword . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1

Installation and maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2

System modifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3

Safety valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

About your heat pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1

Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2

Main functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3

Internal electrical heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4

Freeze protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Control system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1

Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2

Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3

Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Menu information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Turning power ON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Settings and adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.1

Lock/unlock user interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.2

Changing operation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.3

Adjusting DHW temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.4

Changing heat curve and desired room temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.5

Setting current time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.6

Timer settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.7

Changing mode from AUTO to MANUAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.8

Adjusting the indoor temperature in MANUAL mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.9

Manual defrosting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

7.10 Default settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Regular checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.1

Checking operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.2

Check the water level in the heating circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.3

Checking safety valves . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

8.4

Cleaning strainer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

9.1

Checklist . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Installation protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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Danfoss Heating Solutions VUGFC20202 3

User Guide

1

DHP-AT

Foreword

Buying a heat pump from Danfoss is an investment in a better future.

A Danfoss heat pump is classed as a renewable energy source, which means that it is considerate of our environment. It is a safe and convenient solution that provides heating, hot water and in certain cases cooling, for your home at a low cost.

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

Danfoss Heat Pumps

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User Guide DHP-AT

2 Safety precautions

2.1

Installation and maintenance

Danger Only authorized installers may install, operate and perform maintenance and repair work on the unit.

Danger

Danger

Only authorized electricians may modify the electrical installation.

Only authorized refrigeration technicians may perform work on the refrigerant circuit.

2.2

System modifications

Only authorized installers are allowed to perform modifications on the following components:

▪ The heat pump unit

▪ Water and electrical installations

▪ The safety valve

Do not make any constructions / installations that may affect the operational safety of the heat pump.

2.3

Safety valve

The following safety precautions apply to the safety valve in the hot water circuit and corresponding overflow pipe:

▪ Do not block the outlet on the overflow pipe from the safety valve.

▪ 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.

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User Guide

3

3.1

About your heat pump

Components

DHP-AT

5 6 7

1

0

1

4 3

2

6

3

4

1

2

Air inlet

Air outlet

Return line

Supply line

5

6

7

Operator panel

Hot water tank sensor and buffer tank sensor

Power supply example (local and national regulations must be applied)

3.2

Main functions

The heat pump can provide the following functions:

▪ House heating for radiators or under-floor heating

▪ Domestic Hot Water (DHW)

▪ Cooling

▪ Defrosting in cold weather conditions

▪ Frost protection

▪ Legionella prevention

Most of these functions are automatically controlled by the control system according to the need from the household or ambient temperatures.

Cooling must be initiated manually from the key pad by the user. The heat pump behaviour is still automatically controlled by the control system.

The default function when starting the heat pump for the first time is house heating/DHW automatic mode. The production of hot water is prioritized. When the hot water temperature reaches the set point, the heat pump automatically switches to house heating or cooling depending on the user settings.

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User Guide DHP-AT

The heating system is normally configured for automatic house heating/DHW at commissioning. An appropriate heating curve and a desired room temperature are selected by the installer. The heat pump will adjust the house heating water temperature in accordance with the outside air temperature. The maximum water temperature for house heating is 50°C. The AUTO mode is for both comfortable house heating and energy saving.

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.

2

3

50

48

46

22

20

18

32

30

28

26

24

44

42

40

38

36

34

16

14

12

26 24 22 20

1

18 16 14 12 10 8 6 4 2 0 - 2 - 4 - 6 - 8 -1 0 -1 2 -1 4 -1 6 -1 8 -2 0

45

34

4

3

4

1

2

Initial supply line temperature

Supply line water temperature

Working range in AUTO mode

Outdoor ambient air temperature

The recommended heating curves for radiator heating are curves 43-45. The recommended heating curves for under-floor heating are curves 32-34.

Danfoss Heating Solutions VUGFC20202 7

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User Guide DHP-AT

N

The outside air temperature reference point for the heat curves is -6 °C.

Cooling

When the function is manually set to cooling, the machine will lower the indoor temperature. Note that the cooling capacity will decrease as the outdoor temperature increases.

Adjustable cooling supply line temperature range: 8-18 °C.

If the supply line water temperature drops below 2 °C the machine will stop. This to prevent inside components from freezing.

Error code 13 will be displayed.

Domestic hot water

The prioritized function is Domestic Hot Water (DHW). When the water temperature reaches the set point, the heat pump automatically switches to house heating.

Defrosting

The heat pump will calculate and process the best defrosting programme depending on data collected from the temperature sensors.

During defrosting, components will start and stop at intervals (this is normal behaviour).

Defrosting can also be activated manually, this is only recommended when AUTO defrosting is not sufficient. This usually happens in the temperature interval -5 to +5 °C and when outside air humidity is high. Under these conditions can heavy icing occur.

Legionella prevention

There is an automatic legionella prevention when the heat pump function is set to DHW. The automatic legionella prevention runs at

00:00 every 7:th day of operation. The water in the hot water tank will be heated to 65 °C for 15 minutes, using the hot water tank electrical heater. This will kill any possible legionella bacteria inside the hot water tank.

3.3

Internal electrical heater

The internal electrical heater is used in situations when the heating from the heat pump is insufficient due to low air temperature or when the heat pump itself has stopped.

The electrical heater will start in the following conditions:

▪ The system discovers insufficient heating from the heat pump.

▪ The heat pump stops (for protection) due to a failure, and at the same time, the water temperature has not reached the set point.

▪ The heat pump is in defrosting mode.

▪ During freezing protection, step 2.

3.4

Freeze protection

As long as there is power supplied to the heat pump, an automatic freeze protection function will prevent inside components from freezing.

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.

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User Guide DHP-AT

4 Control system

The heat pump has an integrated control system which automatically calculates the heat or cooling demands in the house to ensure desired temperature.

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).

3

4

1

2

Information symbols

Indicator

Power ON/OFF button

Keypad

C C

1

2

3

4

Fig. 1: Operator panel

4.1

Keypad

The keypad is used to navigate through the different menus, to select features and lock / unlock the user settings

1

10

2

Fig. 2: Keypad buttons

3 4 5

9 8

6

7

5

6

7

3

4

1

2

8

9

10

Heating/cooling switch

Down

Up

House heating/cooling (function on/off)

Clock

Lock/unlock

Timer on

Timer off

Domestic hot water (function on/off)

Internal electrical heater

4.2

Indicator

The indicator next to the power ON/OFF button on the operator panel is lit green when power is supplied and the operator panel is connected to the heat pump. When the heat pump is started (using the power button), it is confirmed by a symbol on the display.

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User Guide DHP-AT

4.3

Display

During normal operation, the upper part of the display shows the currently active functions.

The bottom part of the display shows the temperatures in the buffer tank and the hot water tank. If house heating/cooling or 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:

3

4

1

2

5

6

7

8

Heating

Cooling

Defrosting

Internal electrical heater

Alarm

House heating

Domestic Hot Water (DHW)

Interface locked

1

2 3 4 5 6 7 8

C

17

16

9 10 11

15

C

12

13

14

9

10

11

12

13

14

15

16

17

Clock

Timer on

Timer off

Current time

Indicator for DHW function

Indicator for hot water tank electrical heater

Hot water tank temperature

Buffer tank water temperature

Indicator for house heating/cooling function

The display shows the available menus and the default or configured settings.

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5 Menu information

The control system has 30 menus, numbered 00-29. Each parameter in the menu have a default value. Depending on if the operating mode is AUTO or MANUAL, these values may be adjusted.

When the heat pump is in house heating/DHW automatic operation, the information is presented as in the picture below.

C C

Viewing other settings

Other settings in the control system can be reviewed by navigating through the 25 available menus.

1. To enter a menu , press

for 5 seconds. The menu and parameter digits start to flash.

2. Before the flashing stops, press the

or 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.

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User Guide DHP-AT

6 Turning power ON/OFF

The heat pump is normally started by the installer when installing and commissioning the system. If it is necessary to start or stop the heat pump, use the power ON/OFF button, (3) on the keypad.

The heat pump is connected to the mains via a safety switch (circuit breaker).

The indicator (2) on the operator panel is lit green when the operator panel is powered on and connected to the control system. 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 displayed.

C C

1

2

3

4

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7 Settings and adjustments

By default, the heat pump function is set to automatic house heating/DHW. The default heat curve is 43 and the desired room temperature is 20 °C.

The factory configured mode and parameter settings in the control system can be adjusted to fit the current system solution and different customer requirements.

N

There is no reset function. If the default factory settings (parameter values) are changed, the only way to return to the default settings is to manually set the values presented in section Default settings.

7.1

Lock/unlock user interface

To lock or unlock the user interface, press for 5 seconds.

7.2

Changing operation mode

To change the default operation mode, from house heating/DHW AUTO to cooling, press and select the desired room temperature using the or buttons.

on the key pad. Navigate to Menu 01

In the default house heating/DHW AUTO mode, pressing the heat pump in house heating operational mode.

N

on the keypad more than 5 seconds stops the DHW production and puts

The value shown in the display is the present tap water temperature. Press the symbol for less than 5 seconds and the preset temperature is shown.

If pressing the

N

button for more than 5 seconds, the house heating function is turned off.

The value shown in the display is the present house temperature. Press the symbol for less than 5 seconds and the preset temperature is shown.

7.3

Adjusting DHW temperature

1. To change the default setting of the DHW tank temperature, press

2. Use the

or buttons to change the temperature.

. The temperature setting starts to flash.

3. Wait 5 seconds (the figures stop flashing) for the temperature value to be set.

7.4

Changing heat curve and desired room temperature

Changing heat curve and desired room temperature is only available in AUTO mode.

Heat curve

1. To select another heating curve, press

2. Use

or

for 5 seconds.

buttons to navigate to Menu 00.

3. Press

again.

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User Guide DHP-AT

4. Use

5. Press

or buttons to select a new heating curve (range is 24-50).

again and wait 5 seconds.

Desired room temperature

1. To select the initial desired room temperature, press

for 5 seconds.

2. Use

3. Press

or

again.

buttons to navigate to Menu 01.

4. Use

or buttons to select the initial desired room temperature.

5. Wait 5 seconds for the change to be saved.

7.5

Setting current time

1. To change the default time setting, press

.

2. While the symbols are flashing adjust the default hour setting by using the

or

3. Press

4. Use

again.

or buttons to change the default minute setting.

5. Before the flashing stops, press

again or wait 5 seconds to save the settings.

buttons.

14

7.6

Timer settings

The heat pump can start and stop according to timer settings in the control system.

Setting Timer ON

1. To set Timer ON, press

2. Use

3. Press

4. Use

5. Press

or

again.

or

.

buttons to change the default hour setting for Timer ON.

buttons to change the default minute setting for Timer ON.

before the flashing stops or wait 5 seconds.

Setting Timer OFF

1. To set Timer OFF, press

2. Use

or

.

buttons to change the default hour setting for Timer OFF.

3. Press

again.

4. Use

5. Press

or buttons to to change the default minute setting for Timer OFF.

before the flashing stops or wait 5 seconds.

Cancelling Timer settings

VUGFC20202 Danfoss Heating Solutions

User Guide DHP-AT

1. To cancel timer settings, press either

2. Press

before the flashing stops.

or .

7.7

Changing mode from AUTO to MANUAL

1. To change from AUTO to MANUAL mode, press

2. Press

or to navigate to Menu 02.

3. Press the

4. Press

again.

to select value 0 for MANUAL mode.

5. Press

again or wait 5 seconds.

6. To lock the mode, press

for 5 seconds.

for 5 seconds.

7.8

Adjusting the indoor temperature in MANUAL mode

In MANUAL mode, the control system can only adjust the water out temperature which in turn will affect the room temperature.

1. To change the water temperature. press

and adjust the temperature with the or buttons.

2. Press again to return to idle state.

7.9

Manual defrosting

Manual defrosting should only be initiated when the automatic defrosting function is not sufficient (heavy icing on the outdoor unit).

To start a manual defrosting cycle, press and simultaneously for 5 seconds. If all defrost conditions are fulfilled, the defrost symbol will be displayed in the information window. An air temperature below 15°C is required and the compressor must have been running for at least 10 minutes.

N

If the defrost symbol disappears almost immediately, the defrosting criteria are not met and defrosting will not start.

When the defrosting cycle is finished, the symbol will disappear from the information window.

Danfoss Heating Solutions VUGFC20202 15

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User Guide DHP-AT

7.10

Default settings

The following table shows the default settings in the control system:

17

18

23

24

25

26

19

20

21

22

27

28

29

03

04

05

06

07

Menu Description

00 Auto heating curve (value 43 relates to the number of the curve and has no units of measure, A indicates that it is in automatic mode only)

01

02

Initial (desired) room temperature

House heating mode

08

09

10

11

12

Defrostning cycle

Coil temperature threshold for starting defrosting

Coil temperature threshold for stopping defrosting

Maximum defrosting period

Domestic hot water hysterisis setting (i.e number of degrees below setpoint where the DHW will start again)

Heating hysterisis setting (i.e number of degrees below setpoint where the heating will start again)

Overheating of electronic expansion valve in heating mode

Overheating of electronic expansion valve in cooling mode

Time delay for compressor start-up after power-up (for example, after a power cut-off)

Circulation pump operation mode

Default value Range

A43 A24—50

20 °C

1

40 min

-6 °C

13 °C

12 min

5 °C

2 °C

2 °C

3 °C

1 min*

1

15—25 °C

1=Auto

0=Manual

30—90 min

From -20 °C to +5 °C

1—30 °C

1—15 min

1—20 °C

1—20 °C

From -20 °C to +20 °C

From -20 °C to + 20 °C

1—10 min

13

14

15

16

Internal electrical heater operation during defrosting

Automatic legionella protection function

Internal electrical heater start option

1

1

0

-5 °C

1=Switched off when heating temperature has been reached.

0=Continuous operation

1= Turned on

0=Turned off

1=Activated

0=Deactivated

0=Auto

1=Air-temperature condition set in menu 16

2=Water temperature condition set in menu 17

3= Conditions 1 and 2 must be met

From -15 °C to +7 °C Air temperature restriction for when internal electrical heater can manually be started, that is, must be lower than this value.

Additional hysterisis in relation to menu 08 for when internal electrical heater can manually be started.

Additional temperature hysterisis for hot water tank electrical heater in relation to menu 07 for when the electrical heater will start.

Hot water tank electrical heater startup delay

Return water temperature

Supply water temperature

Coil temperature in heating mode (T7)

Coil temperature in cooling mode (T8)

Air temperature (T1)

Hot water tank temperature (T3)

Buffer tank temperature (T2)

Return gas temperature of compressor (T5)

Exhaust gas temperature of compressor (T4)

Shows the number of the operation steps of expansion valve

2 °C

5 °C

30 min

0—13 °C

0—20 °C

30—90 min

Measured value From -30 °C to +99 °C

Measured value From -30 °C to +99 °C

Measured value From -30 °C to +99 °C

Measured value From -30 °C to +99 °C

Measured value From -30 °C to +99 °C

Measured value From -30 °C to +99 °C

Measured value From -30 °C to +99 °C

Measured value From -30 °C to +99 °C

Measured value From -30 °C to +99 °C

Measured value 100—470 steps

* Should not be modified.

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User Guide DHP-AT

19

20

21

22

23

15

16

17

18

11

12

13

14

07

08

09

10

03

04

05

06

Error code

00

01

02

8 Regular checks

8.1

Checking operation

During normal operation, the alarm indicator is hidden to show that everything is OK. When an alarm is triggered, the alarm indicator flashes and at the same time an error code is shown in the display.

Check the alarm indicator regularly to ensure that the appliance is working correctly. In the event of an alarm the heat pump will, if possible, supply heating to the house, primarily with the compressor, secondarily with the internal electrical heater.

The hot water production will stop to indicate that something noteworthy has occurred.

Description

Communication failure

Return water sensor (T9) failure

Supply water sensor (T8) failure

Water flow switch protection

Phase sequence error (only applies to 3-phase models)

Excessive temperature difference protection of supply and return water

Internal electrical heater overheat protection

Condenser overheat protection

Hot water tank sensor (T3) failure

Buffer tank sensor (T2) failure

High pressure protection

Low pressure protection

Supply water temperature too high

Supply water temperature too low

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

Cooling coil sensor (T6) failure

Exceeded operation range warning (non-fault)

8.2

Check the water level in the heating circuit

The line pressure of the installation must be checked once a month.

The external manometer (if available) must show a value between 1-1.5 bar. If the value is below 0.8 bar, when the water in the heating system is cold, the water must be topped up (applies in the event of an empty expansion tank).

Ordinary tap water can be used when topping up the heating system. In certain exceptional cases, the water quality may be poor (for example very hard water) and is not suitable for filling the heating system. If unsure, contact your installer.

N

The closed expansion tank contains an air filled bladder that absorbs variations in the heating system’s volume. Under no circumstances may it be drained of air.

Danfoss Heating Solutions VUGFC20202 17

18

User Guide DHP-AT

8.3

Checking safety valves

Warning If the safety valves are not checked regularly, the water tank might be damaged.

Both safety valves must be checked at least four times a year to prevent lime deposits clogging the mechanism.

Both safety valves is checked by turning the cap a quarter of a turn clockwise until the valve lets out some water through the overflow pipe. If a safety valve does not work properly, it must be replaced. Contact your installer.

The safety valve in the water tank protects the enclosed heater against over pressure in the water tank. It is mounted on the cold water inlet line, its outlet opening is facing downwards.

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.

8.4

Cleaning strainer

The heat pump must be switched off at the external main switch before cleaning can be started.

N

N

N

The 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.

Have a cloth at hand when opening the strainer cover as a small amount of water usually escapes.

1

1. Shut off tap

2. Cover

3. Strainer

4. O-ring

4

3 2

Clean the strainer as follows:

1. Switch off the heat pump.

2. For the heat circuit strainer - remove the insulation around the filler valve.

3. Turn the shut-off taps to the closed position (see figure).

4. Unscrew the cover and remove it.

5. Remove the strainer.

6. Rinse the strainer.

7. Reinstall the strainer.

8. Check that the o-ring on the cover is not damaged.

9. Screw the cover back into place.

10. Turn the shut-off tap to the open position.

11. For the heat circuit strainer - reinstall the insulation around the filler valve.

12. Start the heat pump.

VUGFC20202 Danfoss Heating Solutions

User Guide DHP-AT

9 References

9.1

Checklist

Positioning

□ Surface adjustment

□ Drainage (avoiding water on pedestrian crossings)

Pipe installation

□ Pipe connections in accordance with the diagram

□ Flexible hoses

□ Bleeding

□ Strainer

□ Pipe insulation

□ Open radiator valves

□ Leak test

Electrical Installation

□ Circuit-breaker

□ Fuse

Commissioning

□ Bleeding

□ 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

□ Safety precautions

□ Control computer, function

Danfoss Heating Solutions VUGFC20202 19

User Guide

□ Settings and adjustments

□ Regular checks

□ Reference to service requirement

□ Warranties and insurances

DHP-AT

20 VUGFC20202 Danfoss Heating Solutions

User Guide

10 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

DHP-AT

Danfoss Heating Solutions VUGFC20202 21

User Guide DHP-AT

11 Service Sheet

To achieve the best performance and service life, we recommend that the heat pump is maintained at 12 month intervals.

Service company*

Date (year-month-day)*

Comments*

Service technician's signature*

Customer's signature*

Service company*

Date (year-month-day)*

Comments*

Service technician's signature*

Customer's signature*

Service company*

Date (year-month-day)*

Comments*

Service company*

Date (year-month-day)*

Comments*

Service company*

Date (year-month-day)*

Comments*

Service technician's signature*

Customer's signature*

Service technician's signature*

Customer's signature*

Service technician's signature*

Customer's signature*

22 VUGFC20202 Danfoss Heating Solutions

User Guide DHP-AT

Danfoss Heating Solutions VUGFC20202 23

User Guide DHP-AT

Danfoss Heat Pumps

Box 950

671 29 ARVIKA

Phone +46 570 81300

E-mail: [email protected]

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. Danfoss Heating Solutions and the Danfoss Heating Solutions logotype are trademarks of Danfoss A/S. All rights reserved.

VUGFC20202 Produced by Danfoss Heating Solutions © 10/2011

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