Fig. 17. Draining the Boiler - Typical
I-46
A-070336_EN • Rev. A
M
aintenance
Shutting Down for Maintenance
Conditions:
None
Procedure:
Push the On/Off switch located on the right side of
the boiler.
When in the OFF position, the switch
is released from its pushed in position.
Its built-in light goes off and the button
comes flush with the outer frame.
Follow-on tasks:
Draining the Boiler
Restarting after Maintenance
Conditions:
Procedure:
1.
Push in the On/Off switch located on the
right side of the boiler.
When in the On position, the switch re-
mains pushed in and is illuminated.
2.
Select the desired heating mode, if required.
3.
Activate the DHW mode as required.
4.
Allow the appliance to operate for a few min-
utes, then bleed the air from the system.
Follow-on tasks:
1.
Check there is no leak in the water and gas
circuits.
2.
Check the combustion values according to
“Combustion and Gas Data” on page G-15
.
3.
Record values in
4.
Check the heating circuit pressure (between
1.2 and 6 bar).
i
i
Conditions:
Procedure:
1. Close the isolating valves (
).
2. Connect the optional draining valve (
) to
the sewer with a hose.
3. Open the draining valve (
) to empty the
heating circuit of the boiler.
4. Provide relief at the manual air vent of the boiler.
5. Close the draining valve (
) once the heat-
ing circuit of the boiler is empty.
Follow-on tasks:
None
OFF