Hydraulic Diagram 1 - Vaillant VR 68 Operating And Installation Manual

4 Incorporation of the VR 68 into the solar heating system
4.1

Hydraulic diagram 1

– a wall-mounted boiler
– an uncontrolled heating circuit
– a solar circuit
– a bivalent solar hot water cylinder
– reheating of bivalent solar hot water cylinder using
preference switching valve (VUV)
– circulation pump for hot water controlled by VR 40
– a legionella protection pump
KOL 1
(VR 11)
Fig. 4.1 Hydraulic diagram 1
8
VRC 430
VR 68
KOL 1-P
SP 1
(VR 10)
Ertrag
(VR 10)
SP 2
(VR 10)
VR 40
230 V ~
LEG-P
Operating and Installation Manual for Solar Module VR 68 0020054784_00
AF (VRC 693,
VRC 9535)
ZP