Installation instructions for geoTHERM exclusive VWS 0020051614_00
28
45°
2.
3.
1.
Fig. 5.2 detaching motor housing of the 3-port diverter valve
5.2
Filling of the brine circuit
The brine fluid consists of water mixed with a heat
transfer fluid concentrate. As an additive we recom-
mend propylene glycol (alternative: ethylene glycol)
with corrosion-inhibiting additives. A DN 40 collector
hose has a capacity of approx. 1 litre per continuous
metre.
The brine fluids that may be used differ greatly from re-
gion to region. Please find out about this from the au-
thorities responsible.
Vaillant only approves of operating the heat pump with
the following brine media:
– max. 30 % ethylene glycol/water
– max. 33 % propylene glycol/water
– max. 60 % ethanol/water
WQ
66
64
58
62
59
60
29
57
61
67
65
Fig. 5.3 Brine circuit
Key to Fig. 5.3
29
Brine pump
57
Stop valve
58
Bleed valve
59 Brine expansion tank
60
Expansion relief valve
61
Stop valve
a
Caution!
Danger of lack of tightness by using po-
tassium carbonate as brine lotion!
Insertion of potassium carbonate/water
as brine lotion is in contrast to the units
without cooling function not allowed be-
cause it amounts to interactions with
the integrated seal synthetic materials
in the mixing valve.
a
Caution!
Environmental hazard!
Leakage of brine media must not result
in any contamination of the ground
water or the soil. Substances must be
selected that are non-toxic and biologi-
cally degradable.
h
Note!
Only fit the heat pump cladding sections
after the filling and subsequent bleeding
of the heating circuit.
62
Stop valve
64
Stop valve
65
Brine collecting tank
66
Brine reservoir
67
Filling pump
WQ
Heat Source
5 Filling the heating and heat source systems
Summary of Contents for geoTHERM exclusive
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