Danfoss DHP-A Installation Manual page 30

Installation Guide
1. Determine to which side the brine pipes are to be connected.
2. Route the out pipe for brine in through the corresponding hole (with rubber collar) in the heat pump side.
3. Install all necessary components on the pipe. Remember to install the filler cock with the filter cover upwards.
4. Route the pipe for brine out through the corresponding hole (with rubber collar) in the heat pump side.
5. Install the out pipe with all the accompanying components.
6. Install the expansion tank with the safety valve.
7. Fit both brine pipes with anti-diffusion insulation running all the way from the heat pump to the lead-in in the wall. The brine pipes
running outside the house to the collector can be buried, however they must be well insulated.
5.3.4 Connect to outdoor unit
Connection for the brine circuit from the heat pump to the outdoor unit can be carried out using pipes or hoses. Depending on what
connection is selected and what diameter the connection has, there is a maximum length that the connection may be. The maximum
lengths in the table below are based on ethylene glycol (which is mixed to anti-freeze protection down to -32 ±1°C).
DHP-A Ext. avail. press.
Size kPa
6 30
8 63
10 50
12 43
*) Not recommended because of high liquid speeds with risk of corrosion/noise problems.
30
Domestic heat pumps
Calculated maximum coil length between the HP and outdoor unit, in metres
Cu22Øi = 20.0 Cu28Øi = 25.6
34(2 x 17) 60(2 x 30)
21(2 x 10.5) 60(2 x 30)
11 *(2 x 5.5) 47(2 x 23.5)
5 *(2 x 2.5) 26(2 x 13)
VMGFQ102
PEM DN 25Øi = 21.0
48(2 x 24)
30(2 x 15)
13 *(2 x 6.5)
8 *(2 x 4)
PEM DN 32Øi = 28.0
60(2 x 30)
60(2 x 30)
60(2 x 30)
44(2 x 22)
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