36
COMMISSIONING AND MAINTENANCE
3.4
Temporary shutdown
To switch the boiler off for short periods with outdoor
temperature ABOVE ZERO:
− Open the control panel access door;
− Turn the control panel power switch to (0) OFF and make
sure that the green power indicator goes out;
20
100
4
40 60 80
3 2 1
0
0
120
− switch the boiler OFF at the mains power switch;
9
Do NOT perform this procedure if outdoor temperature might
fall below ZERO (risk of freezing).
Then proceed as follows:
− Adjust the boiler thermostat to its minimum setting;
20
100
4
40 60 80
3 2 1
0
0
120
− Turn the room thermostat to about 10°C or select the frost
protection function.
3.5
Preparing for extended periods of disuse
If the boiler is not going to be used for an extended period of
time, proceed as follows to prepare it for shut-down
− Open the control panel access door;
− Turn the control panel power switch to (0) OFF and make
sure that the green power indicator goes out;
20
100
4
40 60 80
3 2 1
0
0
120
− switch the boiler OFF at the mains power switch;
− Close the boiler’s fuel cock and water supply cock.
9
Empty the boiler if there is any risk of freezing.
