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Connecting hot water circulation (VVC)
VPB S/ VPBS S has a connection that allows hot water
circulation, the HWC return is connected to this (XL5).
Hot water circulation
A circulation pump can be controlled by a ground-source
heat pump or exhaust air heat pump, indoor module or
control module for circulation of the hot water. The cir-
culating water must have a temperature that prevents
bacterial growth and scalding, and national standards
must be met.
-QZ1
-QZ1-FQ3
-QZ1-RN1
-QZ1-RM1
-QZ1-GP11
XL5
NIBE VPB S/ VPBS S
Chapter 3 | For the Installer
19
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