8
Installation, Operation and Maintenance Manual - Ed.07/2005
EVOLUZIONE series natural gas/LPG heaters
SUMMER
1. Close the gas valve and check that electrical current reaches the appliance.
2. Set the summer/winter switch to the summer position (indicated by the sun symbol ); set thus, only the
fans will operate.
SEASONAL ARREST
1. Switch off the appliance and wait for the fans to stop.
2. Close the gas valve upstream of the appliance.
3. If the SUMMER function is not to be used, remove electrical power from the appliance by means of the
omnipolar switch located on the power line.
RESET OF THE LIMIT THERMOSTAT
The limit thermostat stops the burner if the appliance
becomes too hot. Reset is carried out by pressing the
button on the rear of the appliance, after having removed
the protective cap (see Figure 3). Replace the protective
cap after resetting the thermostat.
Figure 3
–
LIMIT THERMOSTAT RESET BUTTON POSITION
Activation of the limit thermostat ALWAYS indicates an abnormal condition.
For this reason, reset of the limit thermostat is a task for professionally qualified personnel, who will restore
operation of the appliance ONLY after identifying the cause of overheating.
2.2 MAINTENANCE
Careful maintenance is always at the basis of economy and safety.
The maintenance of heating plants must be carried out on an annual basis, preferably at the beginning of the
winter season
, by professionally qualified personnel
.
For prolonged, trouble-free operation, we recommend a general cleaning of the appliance (paying particular
attention to the heat exchangers and the fan grilles) and carrying out combustion tests in accordance with
specific regulations.
WARNING
RESET BUTTON
LIMIT THERMOSTAT