Direct Heating Operation (Hydraulic Plan 1) - Vaillant geoTHERM VWS Installation Instructions Manual

6.6.2 Direct heating operation (Hydraulic plan 1)

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).
16
AF
WQ
230 V
230 V
Fig. 6.9 Hydraulic plan 1
Key to Fig. 6.9
30 Gravity brake
31 Control valve with position indication
32 Cap valve
33 Air separator/Dirt filter
42a Expansion relief valve
42b Expansion vessel
AF Outdoor sensor
VF2 supply temperature sensor
WQ Heat source circuit
optional for hydraulic decoupling:
27 Heating circuit pump with control line to the heat pump
39 Hydraulic switch
Installation instructions geoTHERM VWS 0020046310_01
42a
33
32
42b
h
Electrical installation 6
30
31
VF2
27
39
Note!
Should hydraulic decoupling of the hea-
ting circuit be necessary, then fit a low
loss header and an external heating cir-
cuit pump as shown in Fig. 6.9.
30
31
30
31
VF2
33