Danfoss DHP-AX, Инструкция по установке и обслуживанию

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12 – Installation VMBMH302
5 Piping installation
BB D B
NOTE! To prevent leaks, ensure that there are no
stresses in the connecting pipes!
BB D B
NOTE! It is important that the heating system
is bled after installation. Bleed valves must be
installed where necessary.
BB D B
Piping installation must be carried out in accord-
ance with applicable local rules and regulations.
The hot water tank must be equipped with an
approved safety valve (supplied).
BB E B
The pipes between the heat pump various units
should be isolated.
BB E B
Ensure that the piping installation follows the
dimension and connection diagrams in Section 3
Heat pump information.
BB E B
The position lists show the components and
parts included in the delivery in
italics .
BB D B
Radiator systems with closed expansion tanks
must also be supplied with approved pressure
gauges and safety valves.
BB D B
Cold and hot water pipes as well as 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.
BB D B
The connecting pipe between the expansion
tank and the safety valve must slope continu-
ously upwards. A continuous upwards slope
means that the pipe must not slope downwards
from the horizontal at any point.
5.1 System solution
In a VL system the heat pump can produce both heat-
ing and hot water with the compressor and the auxiliary
heater.
Production of heating and hot water cannot occur at the
same time because the exchange valve for heating/hot
water is positioned after the auxiliary heater.
The auxiliary heater carries out peak heating charging
(anti-legionella function) in those operating modes that
permit auxiliary heat.
Buffer tank
The buffer tank equalises the temperature to the heating
system during operation and after defrosting.
BB E B
The recommendation for the volume is that 10
litres/kW installed heat pump output for heat
pumps with heater and 20 litres/kW for heat
pumps without heater.