54
EN
4 - USE AND MAINTENANCE
9. AIR VENT VALVE
The air vent valve installed in the heater and the preassembled kit
must be opened and closed only by hand.
10. THERMIC SYSTEM VALVE
HANDLE POSITION
OPEN
VALVE
CLOSED
VALVE
OPEN
VALVE
CLOSED
VALVE
4.4 - PERIODIC CHECKS
The maintenance of the product is a
fun-
damental
operation in order to guarantee
safety, proper operation and the life span of
the product.
Before proceeding to maintenance, make
sure to take the safety measure so to
not injury or damage people, animals or
objects.
It is strictly forbidden to execute main-
tenance operations before checking the
safety rules at pg 30,31,32 in this manual.
Maintenance must be executed only by
qualified personnel.
The checks to carry out once or more in a
year are:
• Visual inspection of the general state of
the product;
• Check the fastening of the hydraulic circuit;
• General check of the product functioning;
• Pressure check of the heating circuit;
• Pressure check of the expansion vessel;
• Check and cleaning of the y-filters;
• Function check of all the valves;
• Performance check of the product.
Empty the components from possible water
before handling them.
Remove the limestone from the components
in order to guarantee safety, proper functio-
ning and the life span of the product.
