INSTALLER
34
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 (2) 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 (4)
and open the cock.
- Close the drain cock (4) 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 (2) is closed.
- Connect a hose to the storage cylinder drain cock (3)
and open the cock.
- Close the drain cock (3) once the circuit is empty.
NOTE!
Open a hot water tap to facilitate draining of the storage
cylinder.
DRAINING THE SOLAR HEATING CIRCUIT
- Open the non-return valve (9) to facilitate draining. See
the figure to ascertain the correct position for the dot
on the screw.
- Open the manual bleed valves on the system bleed
manifold.
- Connect a hose between the container you are using to
collect the water-glycol mix and the drain cock (B) on
the valve group (11). Open the drain cock and wait until
all the water-glycol mix has drained out of the system.
- Set the non-return valve (9) to automatic functioning.
See the figure to ascertain the correct position for the
dot on the screw.
- Close the previously opened manual bleed valves on
the system bleed manifold.
b
The drain points on the solar circuit safety valves
must also be connected to a suitable collection and
drain system.
b
The manufacturer declines all responsibility for
damage caused by water escaping from the safety
valves.
ON
OFF
2
9
3
4
11
B
AUTOMATIC
OPEN
Содержание 20044966
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