Vaillant VR 68 - Page 14

13Operating and Installation Manual for Solar Module VR 68 0020054784_00
Incorporation of the VR 68 into the solar heating system 4
1
SP 1
(VR 10)
LEG-P
VR 68
VRC 430
AF (VRC 693,
VRC 9535)
230 V ~
ZP
SP 2
(VR 10)
Ertrag
(VR 10)
KOL 1
(VR 11)
KOL-P
TD 1
(VR 10)
230 V ~
MA
2
LP
HK-P
VR 40
Fig. 4.4 Hydraulic diagram 4
Key
1 Direction of flow, if 3-way changeover valve is de-energised
2 Solenoid valve activates swimming pool pump if 3-way
changeover valve is energised