Lamborghini Caloreclima GASTER N 51 AW Instrucciones De Uso, Instalación Y Mantenimiento página 80

Turning off
To temporarily turn the boiler off, just turn the boiler switch 8 (Fig. 1) onto 0.
To turn the boiler off for an extended period:
• Turn the knob of the boiler switch 8 (Fig. 1) onto 0;
• Close the gas cock ahead of the boiler;
• Disconnect the electrical power to the unit;
To avoid damage caused by freezing during long shutdowns in winter, it is advisable to drain all
water from the boiler and the system; or add a suitable antifreeze to the heating system.
3.3 Maintenance
The following operations must only be carried out by Qualified Personnel.
Seasonal inspection of the boiler and flue
It is advisable to carry out the following checks at least once a year:
• The control and safety devices (gas valve, thermostats, etc.) must function correctly.
• The fume ducts must be free of obstructions and leaks.
• The gas and water systems must be airtight.
• The burner and boiler shell must be clean. Follow the instructions in the next paragraph.
• The electrodes must be free of scale and properly positioned (see Fig. 21).
• The water pressure in the cold water system must be about 1 bar; otherwise, bring it to that value.
• The expansion tank, if present, must be filled.
• The gas flow and pressure must correspond to that given in the respective tables.
• The circulating pumps must not be blocked.
Safety devices
The GASTER N AW boiler is equipped with devices that guarantee safety in the event of operating
trouble.
Temperature limiter (safety thermostat) and manual reset
This device prevents the water temperature in the system from exceeding boiling point. The maximum
intervention temperature is 110°C.
Reset of the temperature limiter can only occur with cooling of the boiler (the temperature must drop by
at least 10°C) and identification and consequent elimination of the problem that caused the shutdown.
To reset the temperature limiter you will need to unscrew the cover 3 (Fig. 1) and press the button
below.
Flue gas safety sensor device (flue gas thermostat - manual reset)
The boiler is fitted with device for checking the discharge of the products of combustion. If any anoma-
lies arise in the flue gas discharge system, with the consequent emission of burnt gas into the room, the
appliance will shut down. To measure and control the temperature of the flue gas, the wind-protection
hood is fitted with a temperature sensor bulb.
Any release of burnt gas into the room causes the temperature measured by the bulb to increase, and
as a consequence the boiler is shut-down within 2 minutes, by cutting off the supply of gas to the burner
assembly.
If the flue gas sensor is activated, unscrew the protective cover (4, fig. 1) on the control panel and
manually reset the device. The boiler will recommence operation.
If, in the event of failure, the sensor needs to be replaced, only use original accessories, and check that
the electrical and bulb connections are performed correctly.
The flue gas sensor must not be bypassed under any circumstances!
80
cod. 3540P900 - Rev. 01 - 03/2018
GASTER N 51 ÷ 102 AW