Installation Instructions; Important Information/Safety Regulations; Refrigerant; Electrical Connection - Danfoss DHP-H Installation And Service Instructions Manual

Installation instructions

1 Important information/Safety
regulations
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 apparatus is not intended for persons (including chil-
dren) with reduced physical, sensory or psychological capac-
ity, 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.
⚠
Children are not permitted to play with the apparatus.
⚠
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 base
must be able to support the gross weight of the heat pump
when filled. (see section 2.10 Recommended location)
NOTE! To prevent leaks ensure that there are no stresses in the
connecting pipes!
NOTE! It is important that the heating system is completely
bled after installation.
NOTE! Bleed valves must be installed where necessary.
• Installation must be carried out in accordance with applicable
local rules and regulations. The hot water tank must be equipped
with an approved safety valve (supplied).
• Radiator systems with a closed expansion tank must also be
equipped with an approved pressure gauge and safety valve,
minimum DN 20, for a maximum 1.5 bar opening pressure, or
according to country specific requirements.
• Cold and hot water pipes and overflow pipes from safety valves
must be made of heat resistant and corrosion-resistant material,
e.g. 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.
• If there is any risk of groundwater infiltration at brine pipe lead-
ins, watertight grommets must be used, for more information see
section "Drilling holes for brine pipes".
• In addition to applicable local rules and regulations the installa-
tion should be carried out in a manner that prevents vibrations
from the heat pump being transmitted into the house causing
noise.
1.1

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 car-
ried out by authorized persons.
Fire risk
The refrigerant is not combustible or explosive in normal conditions.
Toxicity
4
In normal use and normal conditions the refrigerant has low toxic-
ity. However, although the toxicity of the refrigerant is low, it can
cause injury (or be highly dangerous) in abnormal circumstances
or where deliberately abused. 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. 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 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 suf-
ficiently ventilated.
Anyone with symptoms of poisoning from the vapour must imme-
diately 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 service valves. All warranties from Danfoss AS are void
if, when filling with refrigerant other than Danfoss recommended
refrigerant, it has not been notified in writing that the new refriger-
ant is an approved replacement refrigerant together with other
remedies.
Scrapping
When the heat pump is to be scrapped the refrigerant must be
extracted for destruction. Local rules and regulations related to the
disposal of refrigerant must be followed.
1.2

Electrical connection

Electrical installation may only be carried out by an authorized elec-
trician and must follow applicable local and national regulations.
The electrical installation must be carried out using perma-
⚠
nently 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 con-
nected units is 2A).
Electrical current! The terminal blocks are live and can be
⚠
highly dangerous due to the risk of electric shock. The power
supply must be isolated before electrical installation is start-
ed. The heat pump is connected internally at the factory, for
this reason electrical installation consists mainly of the con-
nection of the power supply.
⚠ NOTE! The room temperature sensor is connected to a
safety extra-low voltage.
Follow the separate installation instructions for the room tem-
perature sensor!
1.3

Commissioning

⚠ The installation may only be commissioned if the heating
system, water heater and brine system have been filled and
bled. Otherwise the circulation pumps can be damaged.
⚠ If the installation is only to be run on auxiliary heating, first
ensure that the heating system is filled and that neither the
brine pump nor the compressor can be started. This is carried
out by setting the operating mode to ADD.HEAT.
VMBMA602