Vaillant geoTHERM SERIES Manuel d'installation télécharger pdf (Page 32)

Installation instructions geoTHERM VWS/VWW 0020057444_0132

6.7.2 Direct heating operation (Hydraulic plan 1)

The heat pump is connected directly to the underfloor

heating circuit. Control is carried out using energy bal-

ance control by default (see Chap. 8.4.2). To do this, the

VF2 flow temperature sensor must be connected (floor

protection circuit).

400 V

42b

VF2

42a

VF2

Fig. 6.8 Hydraulic plan 1

Key to Fig. 6.8

16 External sensor (AF)

30 Non-return valve

31 Control valve with position indication

32 Cap valve

33 Air separator/Dirt filter

42a Expansion relief valve

42b Expansion vessel

43 Safety group for hot water pipe

VF2 Supply temperature sensor

WQ Heat source circuit

optional for hydraulic decoupling:

27 Heating circuit pump with control line to the heat pump

39 Low loss header

Note!

Should hydraulic decoupling of the heat-

ing circuit be necessary, then fit a low

loss header and an external heating cir-

cuit pump as shown in Fig. 6.8.

Note!

If you have fitted a low loss header be-

tween the heat pump and the heating

system, then the VF2 temperature sen-

sor must be mounted in the flow line

from the low loss header to the heating

system.

6 Electrical installation

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Vaillant geoTHERM SERIES Manuel d'installation Page 32