6
Operating instructions
The safety thermostat may intervene in case of
boiler overheating. You can avoid this by lowe-
ring the working thermostat (see previous
point).
If the boiler’s safety thermostat intervenes often do not try to
relight the boiler yourself. Contact your nearest Unical authori-
zed After Sales Service Centre.
Central heating system pressure
If it is an open circuit system the pressure does not have to be
restored as this occurs automatically via the water level regu-
lator inside the water tank.
If it is a sealed circuit system (refer to local regulations where
this type of installation is permitted), the pressure will have to
be restored via the mains connection cock, re-pressurizing the
system,
when the boiler is cold
, to 1,2/1,3 bar.
When the correct pressure has been reached, by checking the
value indicated in the pressure gauge installed in the system,
close the filling cock.
Gasogen
