Explanation
Pipe connections
Connection, cold waterXL3
Connection, hot waterXL4
Connection, hot water circulationXL5
Docking connection, supply line (from heat
pump*)
XL8
Docking connection, return line (to heat pump*)XL9
Connection, supply line (from solar heating sys-
tem) (Only VPBS 300)
XL13
Connection, return line (to solar heating system)
(Only VPBS 300)
XL14
Connection, T&P valveXL29
HVAC components
T&P valve Ø 15 mmFL5
Venting, charge coilQM22
Submerged tube for hot water sensor (display)
BT7
UA1
Submerged tube for hot water sensor (control)
BT6
UA2
Submerged tube for solar sensor (control)UA3
Submerged tube for temperature limiterUA4
Submerged tube for temperature limiterUA5
Electrical components
Temperature limiterFQ10
Miscellaneous
Serial number platePF3
Adjustable feetUL
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
*or another external heat source
VPB/VPBSChapter 3 | For the Installer10
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