M 1261-06-X AquaSol Ferroli Installation Manual.doc
July 2006
Page 19 of 24
8.3
Starting the System
To start the system switch on the electrical socket, the display on the front of the
unit will light up. The pump will run for 20 seconds at high speed and 20 seconds at
low speed. If there is sufficient solar gain the pump will continue to run, this is
indicated by the lighting or pulsing of a small dot on the right of the display.
Normal operation
If solar radiation is available to heat up the AquaSol the pump will be switched on in
high power mode during 400 sec. to purge air from the collector circuit. After this
starting up period the pump flow will be adjusted depending on solar radiation and
temperature in order to optimize the solar gain of the system.
8.4
System Failure
In an emergency situation this unit will shut down automatically due to the safety
cut-out system (this can be identified by the unit display panel no longer being lit).
Hot water may also be discharged through the tundish. Should this situation arise,
allow the unit to remain in this mode for a period of 2 hours, and then switch off,
unplug the unit, and contact the installer.
9.
Maintaining the System
9.1
Annual Maintenance
It is recommended that the following checks be carried out at least once a year by a
competent operative:
a)
Twist the cap of the Expansion Relief Valve, and check that water is
discharged, and is visible running through the tundish, and at the
discharge drain. Ensure that the valve re-seats itself and that no further
water is discharged.
b)
Lift the lever (or twist the cap, depending on model) of the Pressure
/Temperature relief valve, and ensure that water is discharged, and is
visible running through the tundish and at the drain. Ensure that the
valve re-seats itself, and that no further water is discharged.
If any part fails these tests, shut down, drain the unit, and check for blockages. If
these investigations prove negative, the part may need to be replaced. Contact the
manufacturer for replacement parts information or your local stockists.
c)
Turn off the mains water supply, and remove the cartridge from the
pressure reducing valve. Clean the strainer, and replace the cartridge.
Turn the mains supply back on, ensuring there are no leaks.
d)
Remove the solar circuit fill cap and check that the water in the system
is at the correct level, if not, top up the circuit as per paragraph 8.2
e)
Check expansion vessel air pressure is at 3.5 bar, this should be checked
with the mains pressure at zero.
