Danfoss DHP-AT, Installation Manual

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Caution
All Danfoss warranties are void if filling with refrigerant not specified by Danfoss A/S, unless there is written
consent that the new refrigerant is an, by Danfoss A/S, approved replacement refrigerant.
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 obeyed.
2.3 Electrical connection
Danger
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 disconnected before the electrical installation is started. The heat pump is connec-
ted internally at the factory, so the electrical installation consists mainly of the connection of the power sup-
ply.
Warning
Electrical installation may only be carried out by an authorised electrician. Applicable local and national regu-
lations must be obeyed.
Warning The electrical installation must be carried out using permanently routed cables. It must be possible to discon-
nect the power supply using a multi-pole circuit breaker with a minimum contact gap of 3 mm.
2.4 Water quality
Caution A normal heating system always contains a certain amount of corrosion particulate (rust) and sludge products
from calcium oxide. This comes from acid that naturally occurs in the fresh water that the system is filled with.
Normal filling should occur only once or twice a year. Filling the system more than twice a year can indicate
leakage in the heating system and should be repaired immediately.
The water in the heating system should be as clean as possible. 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 to install a heat pump in areas with hard water because the normal
operating temperature for the hot water does not exceed 60°C.
In areas with exceptional water conditions, it can be necessary to install a softening filter. The filter softens the
water, cleans any impurities and prevents the build up of calcification.
2.5 Commissioning
Caution
The installation may only be commissioned if the heating system is filled and all excessive air is bled. Other-
wise the circulation pump may be damaged.
Installation Guide DHP-AT
Danfoss Heating Solutions VMGFI302
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