Nibe VPB 300, Руководство пользователя и инсталлятора, Страница: 7 / 28

Maintenance
Safety valve
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, expands when
heated causing the pressure to rise and the safety valve
to open.
The function of the safety valves must be regularly
checked, about four times a year, to prevent clogging.
To inspect the valve, open the safety valve manually and
check that water flows through the overflow pipe. If this
does not happen then the safety valve is defective and
must be replaced.
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).
LE
K
XL3 XL9
VPB 300
LE
K
XL3 XL9 XL14 XL4
VPBS 300
Service
For service, contact the installer. Serial number (PF3) (14
digits) and installation date should always be stated.
Only replacement parts supplied by NIBE may be used.
7 Chapter 2 | For the User VPB/VPBS
2 For the User