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Installation instructions geoTHERM VWS/VWW 0020051574_01
4.10.1 Assembly of the heating system
a
Caution!
Risk of damage!
In order to be able to clear any possible
overpressure, the heat pump must be
connected to an expansion vessel and an
expansion relief valve, at least DN 20
with a maximum opening pressure of
3 bar (not supplied).
H
Danger!
Risk of scalding!
The blow-off line on the expansion relief
valve must be the size of the valve's
outlet aperture and be installed in a
frost-free environment. It must remain
constantly open. It must be fitted in
such a way that persons are not endan-
gered by hot water or steam when it
blows off.
We recommend the installation of a
Vaillant safety assembly and tundish.
• Fit the heating flow and return lines with all compo-
nents.
• Insulate all the pipes.
4.10.2 Assembly, brine circuit
• Install the heat source pipes and all their associated
components.
49
61
49
61
58
57
65
42a
58
58
Collector
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Fig. 4.10 VWS heat source circuit
42a
57
65
1
Fig. 4.11 Fitting the brine expansion tank
Key to Fig. 4.11
1
Line, heat source/heat pump
42a Expansion relief valve
57 Brine
expansion
tank
65 Brine
collecting
tank
Assembly and installation 4