Connecting Cold And Hot Water Lines; Connecting The Heating System Supply And Return Lines; Filling The Water Heater And Heating System; Bleeding The Heating System - Danfoss DHP-AX Installation And Service Instructions Manual

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5.1.1 DHP-AX, VL system
Figure 7: General connection diagram.
Position Name
5 DHP-AX heat pump
18 Water heater (accessory)
21 Buffer tank
33 Circulation pump shunt group (accessory)
36 Circulation pump (option)
40 Control centre
50 Outdoor sensor
51 Supply line sensor
52 Return line sensor
53 Hot water sensor (incl. in DWH, otherwise accessory)
54 Room sensor (option)
55 Peak temperature sensor (incl. in DWH, otherwise
accessory)
56 Supply line sensor shunt group (accessory)
72 Shunt valve (accessory)
77 Switching Valve for hot water (accessory)
80 Shut off valve (accessory)
82 Non-return valve (accessory)
84 Flow sensor
85 Bleed valve (accessory)
87 Safety valve (9 bar) (accessory)
91 Strainer
96 Flexible hoses (accessory)
99 Safety valve (1,5 bar)
102 Drain valve (accessory) (only installed if
the heat pump is installed lower than the water
heater)
112 Expansion vessel, closed (accessory)
114 Auxiliary heater (accessory)
5.2

Connecting cold and hot water lines

1. Connect the cold water and hot water pipes with all
the necessary components according to the connec-
tion diagram.
50
40
99
96
102
96
VMBMH302
72
21
80
80
1 12
87
85
77
36
55
51
18
114
53
91
84
5.3 Connecting the heating system sup-
ply and return lines
BB E B
F or information on how flexible hoses should be
installed, see section 15 Noise information.
1. Connect the supply line with a flexible hose connec-
tion and with all the necessary components accord-
ing to the connection diagram.
2. Connect the return line with a flexible hose connec-
tion and with all the necessary components includ-
ing a strainer according to the connection diagram.
3. Insulate the supply and return lines all the way to
the heat pump.
5.4 Filling the water heater and heating
system
1. Fill the water heater with cold water by opening the
filler valve, which is located on the valve pipe.
2. Bleed by opening one of the hot water taps.
3. Then fill the water heater coil and the heating sys-
tem with water through the filling valve to a pres-
sure of approx. 1 bar.
5.5

Bleeding the heating system

1. Open all radiator valves fully.
2. Bleed all radiators.
3. Refill the heating system to a pressure of approxi-
mately 1 bar.
4. Repeat the procedure until all air has been removed.
5. Leave the radiator valves fully open.
33
Heating circuit 2
56
Heating circuit 1
82 80
Cold water
Hot water
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Installation – 13