Danfoss DHP-AQ Mini Mode d'emploi

Service instructions

DHP-AQ

VMGFJ102

If these instructions are not followed during installation and

service, Danfoss A/Sliability according to the applicable warranty

is not binding. Danfoss A/S retains the right to make changes to

components and specifications without prior notice.

The Swedish language is used for the original instructions. Other

languages are a translation of original instructions.

(Directive 2006/42/EG)

Contents

1 About documents and decals ...................................................... 3

1.1 Introduction .................................................................................... 3

1.2 Symbols in documents ................................................................ 3

1.3 Symbols on decals ........................................................................ 3

1.4 Terminology .................................................................................... 5

2 Important information .................................................................... 6

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

2.2 Refrigerant ....................................................................................... 6

2.3 Electrical connection .................................................................... 7

2.4 Important information ................................................................ 7

2.5 Commissioning .............................................................................. 8

3 Troubleshooting ................................................................................ 9

3.1 Alarm ................................................................................................. 9

3.2 Components ................................................................................. 10

3.3 Measurement points ................................................................. 11

3.4 Check points ................................................................................. 14

3.5 Operational problems ............................................................... 14

VMGFJ102 – 1

1 About documents and decals

1.1 Introduction

The following documents are available for this product:

•Installation instructions containing information to install and commission a heat pump installation, and infor-

mation about the heat pump’s function, accessories and technical data. Supplied with the heat pump on deliv-

ery.

•Service instructions that contain information about fault tracing. The service instructions are available for

download as below.

•The electrical instructions that contain the wiring diagram for the heat pump intended for fault tracing and

service. The electrical instructions are available for download as below.

•The maintenance instructions 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.

•Sheet with adhesive decals that will be used as translation for the existing English language type plates.

The Service instructions and Electrical instructions 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 actions 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:

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

taken.

Warning! Risk of personal injury! Indicates a possible danger that can lead to fatal or serious injury if

necessary measures are not taken.

Caution! 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.

Note! Information regarding making the handling of the installation easier or a possible operational

technical disadvantage.

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.

Service instructions VMGFJ102 – 3

Warning symbols

Warning, danger!

Read the documentation provided.

Warning, hazardous electrical voltage!

Warning, hot surfaces!

Warning, moving parts!

Warning, risk of crushing injury!

Electrical components

Component, normal Component, accessory

3 Outdoor unit 362 Shunt valve

50 Outdoor sensor 363 Exchange valve hot water

54 Hot water sensor 365 Supply line sensor

55 Sensor hot-water top 366 Return line sensor

71 Flow sensor 406 Room sensor

304 Circulation pump 408 EVU

353 Drip tray 417 Defrost sensor

Example:

406

Room sensor

4 – Service instructions VMGFJ102

Pipe connections

Bleeding

Defrosting tank

Expansion tank with safety valve, brine

Brine

Temperature and pressure relief valve

Tap water

Outdoor unit

Water heater

Heating system

1.4 Terminology

Term Meaning

Heating system/Heat transfer fluid

circuit The circuit that generates heat to the property or to the water heater.

Supply line The heating system’s supply line with flow direction from the heat pump to radiators/

under floor heating or water heater.

Return line The heating system’s return line with flow direction from radiators/under floor heating

or water heater to the heat pump.

Circulation pump Circulation pump for heating system.

Refrigerant circuit The energy carrying circuit between the outdoor air and heating system.

Refrigerant The gas/liquid that circulates in the refrigerant circuit.

Service instructions VMGFJ102 – 5

2 Important information

2.1 General safety precautions

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

Caution! 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.

Caution! 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.

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

2.2 Refrigerant

2.2.1 Fire risk

The refrigerant is not combustible or explosive in normal conditions.

2.2.2 Toxicity

In normal use and normal conditions the refrigerant has low toxicity. However, although the toxicity of the refrig-

erant is low, it can cause injury (or be highly dangerous) in abnormal circumstances or where deliberately abused.

Warning! Risk of personal injury! Spaces in which heavy vapour can collect below the level of the air must

be well ventilated.

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

event of leakage, concentrations can arise with a resultant risk of suffocation due to a lack of oxygen.

Warning! 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.

2.2.3 Work on the refrigerant circuit

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

Caution! When repairing the refrigerant circuit, the refrigerant must not be released from the heat pump -

it must dealt with in the appropriate way.

6 – Service instructions VMGFJ102

Refilling must only be carried out using new refrigerant (for the amount and type of refrigerant see manufacturer’s

plate) through the service valves.

Caution! All warranties from Danfoss are void if, when filling with refrigerant other than Danfoss A/S

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

replacement refrigerant together with other remedies.

2.2.4 Scrapping

Caution! When the heat pump is to be scrapped the refrigerant must be extracted for disposal. Local rules

and regulations related to the disposal of refrigerant must be followed.

2.3 Electrical connection

DANGER! Hazardous electrical voltage! The terminal blocks are live and can be highly dangerous due to

the risk of electric shock. All power supplies must be isolated before electrical installation is started. The

heat pump is connected internally at the factory, for this reason electrical installation consists mainly of

the connection of the power supply.

Warning! Electrical installation may only be carried out by an authorised electrician and must follow

applicable local and national regulations.

Warning! The electrical installation must be carried out using permanently routed cables. It must be

possible to isolate the power supply using a multi-pole circuit breaker with a minimum contact gap of 3

mm.

2.4 Important information

Caution! A normal heating system always contains a certain amount of corrosion particulates (rust) and

sludge products 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.

Caution! 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 prevailing conditions with the water one can install a softening filter, which softens the water,

cleans any impurities and prevents the build up of calcification.

Service instructions VMGFJ102 – 7

2.5 Commissioning

Caution! The installation may only be commissioned if the heating system is filled and bled. Otherwise the

circulation pump can be damaged.

Caution! If the installation is only to operate using an auxiliary heater during the installation, ensure that

the heating system is filled and bled and that the compressor cannot be started. This is carried out by

setting the operating mode to AUX. HEATER.

8 – Service instructions VMGFJ102

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