Maintenance
The safety valve in the system where the accumulator
tank is installed must be inspected regularly (about four
times a year) to prevent blockages.
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
1. If an immersion heater is installed, disconnect the
power to the accumulator tank.
2. Shut off the incoming cold water.
3. Open the drain connection, or the drain valve if fit-
ted.
During draining, air must be let into the accumulator
tank by opening a vent valve or a hot water connection.
To ensure that the accumulator tank drains completely,
a hose or a pipe with an outlet below the lowest level
of the water heater must be attached to the drain con-
nection or drain valve. When installed where there is a
risk of frost, the accumulator tank must be emptied
whenever it is not in operation. Freezing could result in
the accumulator tank bursting.
Service
For service, contact the installer. The serial number (PF3)
(14 digits) and installation date should always be stated.
Only replacement parts supplied by NIBE may be used.
NIBE UKV 20
Chapter 2 |
For the User
6
2 For the User
