Nibe VPB S Series, User'S And Installer'S Manual, Page: 7 / 24

Maintenance
SAFETY VALVE (NOT ENCLOSED)
You can find the safety valve on the incoming pipe (cold
water) to VPB S/ VPBS S.
The water heater’s safety valve sometimes releases a
little water after hot water usage. This is because the
cold water, which enters the water heater to replace
the hot water, expands when heated causing the pres-
sure to rise and the safety valve to open.
The function of the safety valve must be checked regu-
larly. Perform checks as follows:
1. Open the valve.
2. Check that water is flowing through it.
3. Close the valve.
NOTE
If this pressurised water heater develops a
fault, e.g. a flow of hot water from the overflow
pipe, turn the heat pump off and contact your
installer.
NOTE
Do not remove or adjust any components that
are part of this pressurised water heater. Con-
tact your installer!
TIP
The safety valve is not delivered with
VPB S/ VPBS S. Contact your installer if you
are unsure how to check it.
EMPTYING
Water heater
Draining is performed through the siphon (using hose)
in the cold water connection (XL3).
Charge coil
Draining is performed through the siphon (using hose)
in the docking connection, return to heat pump (XL9).
Solar coil
Draining is performed through the siphon (using hose)
in the connection, return to solar heating system (XL14).
VPB S200 / VPB S300
626
600
30
126
195
478
391
25-50
1475
80
100
560 440
XL3 XL9
VPBS S300
626
600
28
43
205
126
553
478
1
3
391
25-50
1
775
80
560 440
XL3 XL9 XL14
SERVICE
If servicing is required, contact your installer for suitable
measures.
Caution
You need the product's (14 digit) serial number
for servicing and support.
Servicing should only be carried out by persons with the
necessary expertise.
When replacing components on VPB S/ VPBS S only
replacement parts from NIBE may be used.
7 Chapter 2 | For the User NIBE VPB S/ VPBS S
2 For the User