Danfoss Heat Pump Wartungshandbuch PDF herunterladen (Seite 5)

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1 Important information

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This appliance is not intended for use by persons

(including children) with reduced physical, sensory

or mental capabilities, or lack of experience and

knowledge, unless they have been given supervision

or instruction concerning use of the appliance by a

person responsible for their safety.

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Children should be supervised to ensure that they

do not play with the appliance.

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The installation must only be carried out by an

authorized installer with reference to applicable

rules and orders and these installation instructions.

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The heat pump must be located in a frost-free envi-

ronment!

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The floor must be able to support the gross weight

of the heating installation.

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The heating installation must be placed on a stable

surface.

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Before the heat pump is supplied with voltage you

must ensure that the heating system and coolant

system, incl. the heat pump, are filled and bled of air

otherwise the circulation pumps can be damaged.

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If the electrician wishes to test his connections

before the above is carried out this should only done

when it has been checked that the heat transfer fluid

and coolant pumps have been disconnected.

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When filling the coolant system the coolant pump

must be operating but one must ensure that the

compressor and the heat transfer pump cannot start.

The coolant pump can then be run manually using

a separate switch which is located on the electrical

cabinet.

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When filling is complete the coolant pump must be

put in Auto mode.

1.1 Refrigerant

The heat pump’s cooling system (refrigerant circuit) is

filled with R407C or R134a (depending on version) refrig-

erant.

Work on the refrigerant circuit must only be carried

out by a certified engineer!

Fire risk

R407C/R134a are not combustible or explosive in normal

conditions.

Toxicity

In normal use and normal conditions the refrigerant has

low toxicity. However, although the toxicity of the refriger-

ant is low, it can cause injury (or be highly dangerous) in

abnormal circumstances or where deliberately abused.

The refrigerant vapour is many times heavier than air and

in enclosed spaces, below the level of the door for exam-

ple, and in the event of leakage, large concentrations can

occur with the risk of suffocation because of lack of oxy-

gen. Spaces in which heavy vapour can collect below the

level of the air must therefore be well ventilated.

Refrigerant exposed to a naked flame creates a poi-

sonous 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.

Anyone with symptoms of poisoning from the vapour

must immediately move or be moved into the fresh air.

Work on the refrigerant circuit

When repairing the refrigerant circuit, the refrigerant

must not be released from the heat pump – it must be

destroyed at a special plant. Draining and refilling must

only be carried out using new refrigerant (for the amount

of refrigerant see manufacturer’s plate) through the serv-

ice valves. All warranties from Danfoss Heat Pumps are

void if, when filling with refrigerant other than R407C or

R134a, it has not been notified in writing that the new

refrigerant is an approved replacement refrigerant togeth-

er with other remedies.

Scrapping

When the heat pump is to be scrapped the refrigerant

must be extracted for destruction. The local regulations

for treatment of refrigerant must be followed. See the rel-

evant Swedish Environmental Protection Agency refriger-

ant statutes.

1.2 Noise and vibrations

From the sound and vibration point of view it is important

that the pipe mountings in the ceiling and walls are made

with vibration damping fastenings and that the holes for

lead-ins in the walls are made as large as possible so that

sound and vibration do not spread.

If the house has poor acoustics, special care must be taken

so that the vibrations do not spread into the building.

In such cases no mountings may be made in the house

near the heat pump. All mountings must be in free stand-

ing constructions, which themselves are in vibration

damping material such as Solodyn.

In those cases where the coolant side must be mounted

to the building, flexible hoses should be used, although

not the same type as the heat transfer pipes. Flexible

hoses for the heat transfer and hot gas must be extra long

(600 mm or longer) and connected at 90°. If one suspects

that the floor on which the heat pump is located may

transfer vibration to the rest of the building, the heat

pump must be positioned on Solodyn pads. These pads

must be weight adapted. Always consult the representa-

tive from Danfoss Heat Pumps in these cases.

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