AIC COILMASTER 100, Installation And Maintenance Manual For The Installer And The User

Page: 60 / 94

Fig. 16. Draining the Boiler - Typical
I-60
G-084383_EN • 03
M
aintenance
Shutting Down for Maintenance
Conditions: None
Procedure:
1. Press the On/Off switch located on the right
side of the boiler.
When in the OFF position, the switch
internal light comes out.
2. To completely cut the power supply to the
boiler, either disconnect the power supply
cable from the boiler, or use the external cir-
cuit breaker.
Follow-on tasks:
i
Restarting after Maintenance
Conditions:
Procedure:
1. Press the On/Off switch located on the right
side of the boiler.
When in the On position, the switch
remains pushed in and is illuminated.
2. Select the required heating mode as 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-18 .
3. Record values in “Combustion Parameters
- Log Sheet” on page I-90 .
4. Check the heating circuit pressure (between
1.5 and 6 bar).
i
Draining the Boiler
Conditions:
Procedure:
1. Close the isolating valves ( ) of the heating circuit.
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.
6. Close the fi lling valve ( ) of the DHW circuit.
7. Open the draining valve (if installed) ( ) and
a draw-off tap in the circuit to accelerate the
draining process.
8. Close the draining valve ( ).
Follow-on tasks:
None
OFF