
INSTALLER
32
DRAINING
Switch the electricity supply OFF at the control panel and
at the system’s main switch before starting to drain the
boiler or storage cylinder.
DRAINING THE CENTRAL HEATING SYSTEM
- Make sure that the CH system fill cock (3) is closed.
- Close the shut-off cocks for the central heating and
domestic hot water circuits.
- Connect a hose to the hose union on the drain cock (6)
and open the cock.
- Close the drain cock (5) once the circuit is empty.
DRAINING THE STORAGE CYLINDER
- Close the shut-off cocks for the central heating and
domestic hot water circuits.
- Make sure that the CH system fill cock (3) is closed.
- Connect a hose to the storage cylinder drain cock (4)
and open the cock.
- Close the drain cock (4) once the circuit is empty.
NOTE! Open a hot water tap to facilitate draining of the
storage cylinder.
ON
OFF
3
6
4
5
Содержание 20044965
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