Danfoss Domestic heat pumps Installation guide

DHP-A Opti

DHP-C Opti

DHP-C

DHP-H

DHP-H Opti

DHP-H Opti Pro/Opti Pro+

DHP-L

DHP-L Opti

DHP-L Opti Pro/Opti Pro+

DHP-C Opti W/W

www.heating.danfoss.com

MAKING MODERN LIVING POSSIBLE

Installation Guide

Domestic heat pumps

Danfoss A/S is not liable or bound by warranty if these

instructions are not adhered to during installation or service.

The English language is used for the original instructions.

Other languages are a translation of the original instructions.

(Directive 2006/42/EC)

1 About documents and decals ........................................................ 4

1.1 Introduction ................................................................ 4

1.2 Symbols in documents .......................................................... 4

1.3 Symbols on decals ............................................................ 4

2 Important information/Safety regulation ................................................ 6

2.1 General safety precautions ....................................................... 6

2.2 Electrical connection ........................................................... 8

2.3 Water quality ................................................................ 8

2.4 Commissioning .............................................................. 9

3 Transport, unpacking and setting-up ................................................... 10

3.1 Transporting the heat pump ...................................................... 10

3.2 Unpacking ................................................................. 10

3.3 Setting-up the heat pump ....................................................... 11

3.4 Setting-up the outdoor unit ...................................................... 13

4 Heat pump data, dimensions and connections ............................................ 17

5 Piping installation ................................................................ 22

5.1 Safety valves ................................................................ 23

5.2 Connection heating and hot water .................................................. 23

5.3 Connection brine ............................................................. 31

5.4 Maximum length of collectors ..................................................... 36

5.5 Noise information ............................................................. 38

6 Electrical Installation .............................................................. 39

6.1 Electrical components .......................................................... 39

6.2 Fuse size ................................................................... 39

6.3 Connecting external supply voltage ................................................. 40

6.4 Position and connect outdoor sensors ................................................ 42

6.5 Connect outdoor unit .......................................................... 42

6.6 Connect temperature sensor hot water ............................................... 43

6.7 Selection of system solution and connection of external aux. heater ............................ 44

7 Menu information ................................................................ 47

8 INFORMATION menu .............................................................. 48

8.1 Sub-menu OPERAT. ............................................................ 48

8.2 Sub-menu HEAT CURVE ......................................................... 48

8.3 Sub-menu HEAT CURVE 2 ........................................................ 49

8.4 Sub-menu TEMPERATURE ........................................................ 49

8.5 Sub-menu OPERAT.TIME ......................................................... 50

8.6 Sub-menu DEFROST ........................................................... 50

8.7 Sub-menu LANGUAGE .......................................................... 51

9 SERVICE menu .................................................................. 52

9.1 Sub-menu HOT WATER ......................................................... 52

9.2 Sub-menu HEAT PUMP .......................................................... 52

9.3 Sub-menu AUX. HEATER ......................................................... 53

9.4 Sub-menu MANUAL TEST ........................................................ 54

9.5 Sub-menu INSTALLATION ........................................................ 55

9.6 Sub-menu DEFROST ........................................................... 58

9.7 Sub menu OPTIMUM ........................................................... 58

9.8 Sub-menu HGW .............................................................. 59

10 Commissioning .................................................................. 60

10.1 Checking the pipes and electrical installation ........................................... 60

10.2 Configuration of control system .................................................... 60

10.3 Filling and bleeding the water heater and heating system ................................... 61

10.4 Filling and bleeding the brine system ................................................ 62

10.5 Manual test ................................................................. 68

10.6 Commissioning .............................................................. 71

10.7 Installation protocol ........................................................... 72

10.8 Customer information .......................................................... 72

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Installation Guide Domestic heat pumps

1 About documents and decals

1.1 Introduction

The following documents are available for this product:

▪

The Wiring diagrams that contain the wiring diagram for the heat pump intended for fault tracing and service. The Wiring diagrams

are available for download as below.

▪

The User manual must handed over and gone through with the end customer. Supplied with the heat pump on delivery.

▪

Country specific instructions and forms are available where relevant. Supplied with the heat pump on delivery.

▪

Self-adhesive decals with translation text. Must be placed on the manufacturing plate in conjunction with installation. Supplied

with the heat pump on delivery.

The Service instructions and Wiring diagrams are available for download here:

www.documentation.heatpump.danfoss.com

1.2 Symbols in documents

The instructions contain different warning symbols, which, together with text, indicate to the user that there are risks involved with ac-

tions to be taken.

The symbols are displayed to the left of the text and three different symbols are used to indicate the degree of danger:

Indicates an immediate danger that leads to fatal or serious injury if necessary measures are not taken.

Risk of personal injury!

Indicates a possible danger that can lead to fatal or serious injury if necessary measures are not taken.

Risk of installation damage.

Indicates a possible hazard that can lead to item damage if necessary measures are not taken.

A fourth symbol is used to give practical information or tips on how to perform a procedure.

N

Information regarding making the handling of the installation easier or a possible operational technical disad-

vantage.

1.3 Symbols on decals

The following symbols can occur on decals on the different parts of the heat pump. Which symbols are used depends on the heat pump

model.

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Installation Guide Domestic heat pumps

1.3.1 General

!

Warning, danger!

!

Read the documentation provided.

Warning, hazardous electrical voltage!

Warning, hot surfaces!

Warning, moving parts!

Warning, risk of crushing injury!

1.3.2 Electrical components

3

Outdoor unit

50

Outdoor sensor

54

Hot water sensor

55

Hot water top sensor

71

Flow guard

304

Circulation pump

353

Drip tray

362

Shunt valve

363

Exchange valve hot water

365

Supply line sensor

366

Return line sensor

406

or

62

Room sensor

408

EVU

417

Defrost sensor

Explanation

Component, ordinary delivery according to proposed sys-

tem solutions

Component, accessorie according to proposed system sol-

utions

1.3.3 Pipe connections

Tap water

Heating system

Brine system

Defrosting tank

Expansion tank with safety valve, brine

Air bleeding

Temperature and pressure relief valve

Outdoor unit

Water heater

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Installation Guide Domestic heat pumps

2 Important information/Safety regulation

2.1 General safety precautions

Risk of personal injury! Children are not permitted to play with the product.

As the water temperature in DHP-H Opti Pro/DHP-H Opti Pro + and DHP-L Opti Pro/DHP-L Opti Pro + be-

comes hot (up to 95°C), a mixer valve must be installed between the cold water and hot water pipes to ensure

a lower domestic hot water temperature.

Alternatively the maximum hot water temperature must be reduced in the Service menu.

Danfoss SP (1-phase) heat pumps have a factory installed safety valve for temperature and pressure, (10 bar

90-95°C), in accordance with the requirements in Great Britain. This valve is located in the water tank and may

not be used for any purpose other than connecting the outlet pipe. Also note that for heat pump DHP-H Opti

Pro SP and DHP-L Opti Pro SP it is imperative that the hot water temperature is changed from default setting

95°C to 85°C.

The heat pump must be installed by authorised installation engineers and the installation must follow the

applicable local rules and regulations as well as these installation instructions.

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.

The heat pump must be located in a frost-free environment!

The heat pump must be placed in an area with a floor drain.

The heat pump must be located on a stable base. The floor must be able to support the gross weight of the

heat pump with filled hot water tank (see Technical data).

To prevent leaks, ensure that there are no stresses in the connecting pipes!

It is important that the heating system is bled after installation.

Bleed valves must be installed where necessary.

The hot water tank must be equipped with an approved safety valve.

Heating systems with closed expansion tanks must also be supplied with approved pressure gauges and safe-

ty valves.

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Installation Guide Domestic heat pumps

Cold and hot water pipes and overflow pipes from safety valves must be made of heat resistant and corro-

sion-resistant material, for example copper. The safety valve overflow pipes must have an open connection to

the drain and visibly flow into this in a frost-free environment.

The connecting pipe between the expansion tank and the safety valve must slope continuously upwards. A

continuous upwards slope means that the pipe must not slope downwards from the horizontal at any point.

When cooling it is important to limit the lowest flow line temperature to prevent condensation.

N

If there is any risk of groundwater infiltration at wall lead-ins for brine pipes, watertight grommets must be

used.

N

In addition to applicable local rules and regulations the installation should be carried out in a manner that

prevents vibrations from the heat pump being transmitted into the house causing noise.

2.2.1 Refrigerant

Work on the refrigerant circuit must only be carried out by a certified engineer!

Although the heat pump cooling system (refrigerant circuit) is filled with a chlorine-free and environmentally-approved refrigerant that

will not affect the ozone layer, work on this system may only be carried out by authorized persons.

2.2.2 Fire risk

The refrigerant is not combustible or explosive in normal conditions.

2.2.3 Toxicity

In normal use and normal conditions the refrigerant has low toxicity. However, although the toxicity of the refrigerant is low, it can cause

injury (or be highly dangerous) in abnormal circumstances or where deliberately abused.

Risk of personal injury! Spaces in which heavy vapour can collect below the level of the air must be well venti-

lated.

Refrigerant vapour is heavier than air and, in enclosed spaces below the level of a door for example, and in the event of leakage, concen-

trations can arise with a resultant risk of suffocation due to a lack of oxygen.

Risk of personal injury! Refrigerant exposed to a naked flame creates a poisonous irritating gas. This gas can

be detected by its odour even at concentrations below its permitted levels. Evacuate the area until it has been

sufficiently ventilated.

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2.2 Refrigerant

Installation Guide Domestic heat pumps

2.2.4 Work on the refrigerant circuit

When repairing the refrigerant circuit, the refrigerant must not be released from the heat pump, it must trea-

ted in the appropriate way.

Draining and refilling must only be carried out using new refrigerant (for the amount and type of refrigerant see manufacturer’s plate)

through the service valves.

All warranties from Danfoss are void if, when filling with refrigerant other than Danfoss A/S specified refriger-

ant, if there has not been written notification that the new refrigerant is an approved replacement refrigerant

together with other remedies.

2.2.5 Scrapping

When the heat pump is to be scrapped the refrigerant must be extracted for disposal. Local rules and regula-

tions related to the disposal of refrigerant must be followed.

2.3 Electrical connection

Hazardous electrical voltage! The terminal blocks are live and can be highly dangerous due to the risk of elec-

tric shock. All power supplies must be isolated before electrical installation is started. The heat pump is con-

nected internally at the factory, for this reason electrical installation consists mainly of the connection of the

power supply.

Electrical installation may only be carried out by an authorized electrician and must follow applicable local

and national regulations.

The electrical installation must be carried out using permanently 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).

2.4 Water quality

A normal heating system always contains a certain amount of corrosion particulates (rust) and sludge prod-

ucts from calcium oxide. This comes from acid that is naturally occurring in the fresh water that the system is

filled with. It is not good practice to have to fill the heating system regularly which is why any leakage in the

heating system should be repaired immediately. Normal filling should occur only once or twice a year. The

water in the heating system should be as clean as possible, always position the dirt filter on the return line

from the heating system to the heat pump, as close to the heat pump as possible.

Hard water; Normally it is not a problem installing a heat pump in areas with hard water because the normal

operating temperature for the hot water does not exceed 60°C. In areas where there are exceptional prevail-

ing conditions with the water one can install a softening filter, which softens the water, cleans any impurities

and prevents the build up of calcification.

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2.5 Commissioning

The installation may only be commissioned if the heating system and brine system have been filled and bled.

Otherwise the circulation pumps can be damaged.

If the installation is only to be driven by the immersion heater during the installation, ensure that the heating

system is filled and the brine pump and compressor cannot be started. This is carried out by setting the oper-

ating mode to AUX. HEATER.

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Installation Guide Domestic heat pumps

3 Transport, unpacking and setting-up

3.1 Transporting the heat pump

During transportation or lifting of the entire heat pump, the front panel must always be installed as it locks

the other panels construction.

The heat pump must always be transported and stored in a dry area. Secure the heat pump so that it cannot

tip over during transportation.

The heat pump must always be transported and stored standing and in a dry environment. If the heat pump is

laid on the incorrect side it may become seriously damaged as the oil in the compressor can run out in the

pressure pipe and therefore prevent normal function.

When transporting indoors to the installation location it may be necessary to place the heat pump on its back. The time that the heat

pump is transported on 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.

3.2 Unpacking

3.2.1 Unpack the heat pump

1. Check that there is no transport damage.

2. Remove the packaging.

3.2.2 Delivery check

1. Check that the delivery contains the following components:

4-10 kW 12-13 kW 16-17 kW

Safety valve 9 bar ½"

1

1 1 1

Safety valve 1,5 bar ½" or 3 bar 1/2''

1

1 1 1

Outdoor sensor 1 1 1

Expansion and bleed tank or Expansion vessel with manometer

2

1 1 1

Rubber bellows for 22-28 mm hole 5 5 5

Rubber hose R20 L=550 2 - -

Rubber hose R25 L=550 - 2 2

Filling device DN25

2

1 1 -

Filling device DN32

2

- - 1

Dirt strainer with shut off valve DN20

1

1 - -

Dirt strainer with shut off valve DN25 - 1 1

Manual holder 1 1 1

1

Does not apply to DHP-C Opti W/W

2

Not included in DHP-C Opti W/W delivery

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Installation Guide Domestic heat pumps

3.3 Setting-up the heat pump

3.3.1 Recommended location

To avoid condensation problems for the brine lines, as short a brine line as possible is recommended indoors.

The heat pump should be located on a stable floor, preferably made of concrete. When locating the heat pump on a wooden floor this

should be reinforced to take the weight of the heat pump including a filled water heater, see technical data for relevant heat pump. One

solution is to place a thick metal plate, at least 6mm, under the heat pump. The metal plate should cover several joists spreading the

weight of the heat pump over a larger area. If the heat pump is being installed in a newly-built house, this has normally been taken into

account during construction, and the joists where the heat pump will be located have been reinforced. Always check that this has been

carried out when installing into a newly-built house.

Avoid positioning the heat pump in a corner as the surrounding walls may amplify its noise. It is also important to adjust the heat pump

using the adjustable feet so that it is horizontal to the base.

3.3.2 Space requirement

The heat pump must not be enclosed as the temperature inside the cabinet becomes extremely high.

To facilitate the fitting, installation and subsequent testing and maintenance there must be sufficient free space around the heat pump

in accordance with the following dimensions:

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Installation Guide Domestic heat pumps

300 mm

10 mm

600 mm

300 mm

1905

1620

3.3.3 Setting up

N

The heat pump has feet that can be adjusted to compensate for irregularities in the surface on which it is

sitting. If the surface is so irregular that the feet cannot compensate for it, the installation engineer must rem-

edy this.

N

It is recommended that the condensation drain is installed from the drip tray’s drain pipe by lying the heat

pump down. The drain pipe opens through a hole in the base plate and has a Ø10 mm hose connection.

N

If the heat pump has been laid down it is recommended that it stands upright for at least an hour before

commissioning.

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Installation Guide Domestic heat pumps

3.3.4 Removing the front cover

1

2

3

Do not damage the electrical wiring for the display when the front cover

is removed!

1. Press against the front cover and turn the catch 90° degrees anti-clockwise to release the front

cover.

2. Tilt the front cover outwards.

3. Lift the front cover upwards to remove it from the heat pump.

3.4 Setting-up the outdoor unit

3.4.1 Recommended location

When positioning the outdoor unit, note the following:

When the outdoor unit is defrosting, water will drip straight down under the unit. The area around the out-

door unit must therefore be properly drained in order to take the water (approximately 6 litres per defrost).

The outdoor unit must be positioned on a secure base such as wooden sleepers, paving slabs or cast footings.

N

The outdoor unit does not have to be positioned in any specific direction.

N

Position the outdoor unit to reduce noise disturbance in your own home as well as to any neighbours.

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Installation Guide Domestic heat pumps

3.4.2 Foundation for outdoor unit

1. Position the outdoor unit on a stable base that can take the total weight, see Technical data.

2. Secure all four mounting points on a stable base, for example a cast foundation.

100 mm

~900 mm

b

c

a

7

5

4

3

6

1

8

2

Measurements 6-12 kW

1 470 mm

2 480 mm

3 672 mm

4 190 mm

5 65 mm

6 ~1,200 mm

7 ~720 mm

8 Ø 65 mm

Position Description

a Drainage hole

b Foundation

c Gravel

Bolt size

6-12 kW

M12 (4x)

A driptray is installed with the purpose of gathering and draining away melt water during defrosting. Connect

a hose or pipe along with a heat trace cable between the outlet of the drip tray and a drain or a free draining

piece of ground. The heat cable must be connected to the terminal provided and is necessary to prevent ice

blockage.

Check with a spirit level that the outdoor unit is installed horizontally.

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Installation Guide Domestic heat pumps

Incorrect positioning of the outdoor unit risks reduction of performance.

N

Keep the outdoor unit and its immediate area free of snow, ice, leaves etc.

N

Remember that the outdoor unit must have a certain amount of space in order to function and for servicing.

Otherwise there is a risk that the air will recirculate from exhaust to intake. Avoid this by following the dimen-

sions given below.

3.4.3 Space requirement

>

50

0

mm

>

5

00

mm

>1500

m

>400

m

>

5

00

mm

3.4.4 Unpacking

The outdoor unit is packed and delivered in a crate.

1. Unpack the unit from the crate.

2. Check that the delivery contains the following:

▪

Outdoor unit

▪

Expansion vessel kit:

▪

Safety valve

▪

Manometer

▪

Expansion vessel

▪

Rubber hoses (2 pieces)

▪

Pipe insulation (2 pieces)

3.4.5 Lifting instructions

To lift the outdoor unit into position, unscrew the side plates by slackening off the screws (1).

Then use the side members behind the side panels to lift and position the unit.

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Installation Guide Domestic heat pumps

1

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Installation Guide Domestic heat pumps

4 Heat pump data, dimensions and connections

DHP-H, DHP-H Opti, DHP-H Opti Pro, DHP-H Opti Pro +, DHP-C, DHP-C Opti, DHP-C Opti W/W

110

1845 (±10)

455

596

528

300

440

40±10

1

2

610

80

4

7

8

6

5

9

3

1 Brine in, 28 Cu (DHP-C: Brine out)

2 Brine out, 28 Cu (DHP-C: Brine in)

3 Heating system supply pipe, 22 Cu: 4-10 kW, 28 Cu:

12-16 kW (

Pro +: Heating system supply pipe, 22 Cu: 6-8

kW, 28 Cu: 10-13 kW )

4 Heating system return pipe, 22 Cu: 4-10 kW, 28 Cu:

12-16 kW (Pro +: Heating system return pipe, 22 Cu: 6-8

kW, 28 Cu: 10-13 kW )

5 Connection for bleed valve, 22 Cu

6 Hot water line, 22 mm

7 Cold water line, 22 mm

8 Lead-in for supply, sensor and communication cables

9 Safety valve for temperature and pressure (only applies

to certain models)

The brine pipes can be connected on either the left or right-

hand side of the heat pump.

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Installation Guide Domestic heat pumps

DHP-L, DHP-L Opti, DHP-L Opti Pro/DHP-L Opti Pro +

455

596

690

40 ±10

110

528

300

440

7

1

2

1538 (±10)

610

80

3

6

4

5

1 Brine in, 28 Cu

2 Brine out, 28 Cu

3 Heating system supply pipe, 22 Cu: 4-10 kW, 28 Cu:

12-16 kW (Pro +: Heating system supply pipe, 22 Cu: 6–8

kW,28 Cu: 10–17 kW)

4 Heating system return pipe, 22 Cu: 4-10 kW, 28 Cu:

12-16 kW (Pro +: Heating system return pipe, 22 Cu: 6–8

kW, 28 Cu: 10–17 kW)

5 Lead-in for supply, sensor and communication cables

6 Supply line to water heater, 22 Cu (Only applies to DHP-

L Opti Pro/DHP-L Opti Pro +)

7 Return line from water heater, 22 (flexible hose)

The brine lines (1), (2) and return line water heater (7) can be

connected on either the left or right-hand sides.

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Installation Guide Domestic heat pumps

4.1 DWH

DHP-L with DWH 300 DHP-L with DWH 200

455

596

610

80

1845 (±10)

4

5

3

7 8

9

10

11

5

690

110

528

300

440

1

2

6

1538 (±10)

40±10

6

1538 (±10)

455

596

690

40±10

110

528

610

80

300

440

1

2

6

4

5

3

7 8

9

10

11

5

6

1 Brine in, 28 Cu

2 Brine out, 28 Cu

3 Heating system supply pipe, 22 Cu: 4-10 kW, 28 Cu: 12-16 kW

4 Heating system return pipe, 22 Cu: 4-10 kW, 28 Cu: 12-16 kW

5 Lead-in for supply, sensor and communication cables

6 Return line from water heater to heat pump Ø 22 mm

7 Hot water Ø 22 mm

8 Cold water Ø 22 mm

9 Supply line from heat pump (diam) 22 mm

10 Connection for bleed valve, 22 Cu

11 Combined temperature and pressure relief valve

The brine pipes can be connected on either the left or right-hand sides of the heat pump.

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Installation Guide Domestic heat pumps

DHP-A Opti

1845 (±10)

455

596

528

258

250

300

40±10

1

2

610

80

5

78

9

6

10

3

4

1 Brine in, 28 Cu

2 Brine out, 28 Cu

3 Lead-in for supply, sensor and communication cables

4 Heating system supply pipe, 22 Cu: 6-10 kW, 28 Cu: 12

kW

5 Heating system return pipe, 22 Cu: 6-10 kW, 28 Cu: 12

kW

6 Connection for bleed valve, 22 Cu

7 Hot water line, 22 mm

8 Cold water line, 22 mm

9 Expansion outlet brine circuit, R25 int.

10 Safety valve for temperature and pressure (only applies

to certain models)

The brine pipes can be connected on either the left or right-

hand side of the heat pump.

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Installation Guide Domestic heat pumps

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Danfoss Domestic heat pumps Installation guide

Danfoss Domestic heat pumps Installation guide

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