Pipe Connections - Nibe VPB Installer Manual

Pipe connections

XL3 Connection, cold water, Ø 22 mm
XL4 Connection, hot water, Ø 22 mm
XL5 Connection, hot water circulation, Ø 15 mm
(Not VPBS 300)
XL8 Docking connection, flow line (from heat pump*),
Ø 22 mm
XL9 Docking connection, return line (to heat pump*,
Ø 22 mm
XL13 Connection, flow line (from solar heating system)
Ø 22 mm (Only VPBS 300)
XL14 Connection, return line (to solar heating system)
Ø 22 mm (Only VPBS 300)
XL29 Connection, T&P valve
HVAC components
FL5 T&P valve Ø 15 mm
QM22 Venting, charge coil
UA1 Submerged tube for hot water sensor (display)
UA2 Submerged tube for hot water sensor (control)
UA3 Submerged tube for solar sensor (control) (only
VPBS 300)
UA4 Submerged tube for temperature limiter
UA5 Submerged tube for temperature limiter
*or another external heat source
VPB/VPBS UK
Electrical components
FD1 Temperature limiter
Miscellaneous
PF 3 Serial number plate
UL Adjustable feet
Designations in component locations according to
standard IEC 81346-1 and 81346-2.
Chapter 3 | The water heater design 9