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 clo-
sed.
− 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 clo-
sed.
− 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 drai-
ning. See the figure to ascertain the correct posi-
tion 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 fun-
ctioning. 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.
9
The drain points on the solar circuit safety valves
must also be connected to a suitable collection and
drain system.
9
The manufacturer declines all responsibility for da-
mage caused by water escaping from the safety val-
ves.
ON
OFF
2
11
B
AUTOMATIC
OPEN
4
9
3
37
INSTALLER
