30
Regulation and servicing
fo
r the technician
Hydraulic section
STORAGE TEMPERATURE REGULATION
The boiler supplies hot water with constant temperature thanks to a mixing system between the hot
water coming from the cold water heater. The normal temperature regulation of the outlet water
must be made through the knob
on the control panel.
There is also a secondary regulation which changes the temperature of only the heater.
This regulation is made in the firm for the best functioning of the boiler and it should
not be modified. A too low regulation doesn’t guarantee the correct hot water temperature
control, whether a too high temperature could bring to big scale formations if the water is
very strong and, consequently to the need of frequent cleaning of the exchange serpentine.
So, it is suggested to intervene with big caution on this regulation and to intervene only in the cases
of very strong types of water.
Remark: it is possible to set this regulation on minimum to make the boiler work in “room anti-
freeze” mode during an inactivity period, in the case that is installed a common room thermostat
or chronothermostat featuring this possibility (see also “Boiler inactivity”). With this setting on
minimum, the boiler will anyway check the temperature of the stored water, keeping it above the
freezing temperature. Remember to put this setting back to the original position at the end of
the inactivity period.
— Open the wicket of the control panel and take the protection plug on the right side of the knob
,
without turning it, grasping the small tongue with the nippers;
— turn the staff in clockwise sense to increase the storage temperature and anticlockwise to
decrease it. In every case do not overcome the limit MIN and MAX. The best firm set up
corresponds to the middle position between the limits MIN and MAX.
