M 1261-06-X AquaSol Ferroli Installation Manual.doc
July 2006
Page 20 of 24
f)
If the unit is installed in an area where the water is hard or contains
appreciable solids, flush the system.
g)
Turn off the mains water supply, & drain down the hot water circuit by
opening a hot water tap. Carefully loosen the union to the mixing valve
as water may still be held within the pipe work! WARNING The draining
of the system should only be carried out when the pipe work is cool as
the water can become extremely hot during normal operation.
h)
Remove the unions from the mixing valve and clean out the filters as
required. Check the operation of the check valves to ensure they open &
close freely. Re-connect the unions & open the mains water inlet to
ensure there are no leaks, close the hot water outlet.
i)
After the completion of the service it is advisable to check the
temperature of the mixed water using a calibrated gauge, this should be
done at the boilers recommended flow rate.(See the boiler technical data
page within the boiler installation manual)
On completion of the annual maintenance, please complete the log at
the back of this manual.
9.2
Draining the System
Isolate the 230v power to the unit. Turn off the cold water mains feed to the unit.
Switch off the electrical supply to the combination boiler. Open a hot water tap, and
then open a drain valve, which should be installed in the cold water inlet pipe at the
lowest point.
9.3
Flushing the System
To flush the system, drain the system as per instructions 9.2. Refill the system as
per instructions 8.1, This may be required several times if heavily contaminated.
