Installation instructions geoTHERM VWS/VWW 0020051574_01
36
6.6.5 Mixer circuit with buffer cylinder and
domestic hot water cylinder (Hydraulic
plan 4)
The regulated underfloor heating circuits are operated
by the external heating circuit pump from the buffer
cylinder via a mixer. The flow temperature sensor sits
behind the external pump.
The heat pump responds to a demand for heat from the
buffer cylinder.
Fig. 6.11 Hydraulic plan 4
Key to Fig. 6.11
3
geoTHERM heat pump, VWS/VWW
4
Buffer cylinder, VPS
5
Domestic hot water cylinder
13
Weather-controlled energy balance controller
13a
VR 90 remote control unit
13b
Mixer module VR 60
16
External sensor/DCF receiver
19 Maximum thermostat
30
Non-return valve
31 Regulating valve
32
Cap valve
33
Dirt trap
42a Expansion
relief
valve
42b Diaphragm
expansion
tank
42c
Diaphragm expansion tank, tap water
43
Safety group, water connection
52
Valve, individual room control
58
Fill and drain valve
a
Caution!
Risk of damage!
The electrical auxiliary heating must be
protected on the customer side by a non
self-resetting thermal cut-out that pro-
vides all-pole disconnection.
KP
Circulation pump, heat pump circuit
HKa-P CH pump
HKb-P CH pump
HK2-P CH pump
HKa
Mixer module for heating circuit
HKb
Mixer module for heating circuit
HK2
Mixer module for heating circuit
CP/SV1 Switching valve
RF1 Return
temperature
sensor
SP
Cylinder temperature sensor
VFa
Supply temperature sensor
VFb
Supply temperature sensor
VF1
Supply temperature sensor
VF2
Supply temperature sensor
WQ
Heat source circuit
ZH
Electric auxiliary heating
ZP
Circulation pump
The brine pump is only included with VWS.
6 Electrical installation
