Vaillant geoTHERM SERIES Manual de instalación descargar pdf (Pagina 34)

Installation instructions geoTHERM VWS/VWW 0020057444_0134

6.7.4 Direct heating operation and domestic hot

water cylinder (Hydraulic plan 3)

The heat pump is connected directly to the underfloor

heating circuit. Control system is carried out using ener-

gy balance control by default (see Chap. 8.4.2). The VF2

flow temperature sensor must be connected (floor pro-

tection circuit).

The heat pump also supplies a domestic hot water cylin-

der.

42b

VF2

42a

400 V

VF2

Fig. 6.10 Hydraulic plan 3

Key to Fig. 6.10

16 External sensor (AF)

25 Circulation pump

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

SP Cylinder temperature sensor

WQ Heat source circuit

KW Cold water

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. 6.10.

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 Manual de instalación Pagina 34

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