2.2.4
Work on the refrigerant circuit
Caution
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.
Caution
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
Caution
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
Warning
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.
Caution
Electrical installation may only be carried out by an authorized electrician and must follow applicable local
and national regulations.
Caution
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
Caution
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.
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 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.
Service Instructions
DHP-AQ
VMGFJ202
Danfoss Heating Solutions
8
