Atag iC 24, Installation & Servicing Instructions Manual

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Installation & Servicing instructions ATAG iC-Range
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15 Commissioning
Work on the installation and/or boiler should only be carried out by qualifi ed personnel with
calibrated equipment.
At the time of commissioning, complete all revelant sections of the Benchmark Checklist located on
the inside back pages of the document.
For maintenance of the boiler the cover has to be removed.
Unscrew the 2 locking screws from the fasteners at the top of the boiler, unlock the fasteners and remove the
cover in a forward motion. See fi gure 16.a
Note that there is an earth cable (when present) to disconnect when removing the boiler front panel.
Free space for removing the connector is about 400 mm. Remember to connect this earth cable
(when present) when placing back the boiler front panel and take care the wire does not get stuck
between front panel and boiler. Always replace and turn the 2 screws tight in the fasteners A and B.
Changing settings, such as the burner pressure and the amount of air fl ow, is superfl uous. Only in case of a
failure or when replacing the gas block, venturi and/or fan, the CO
2
percentage should be checked.
Always check all gas carrying parts for leaks (with a leak detection spray) after (maintenance) work
to the boiler.
Close the relevant commissioning valves during the maintenance activities. See fi gure 15.a.
Figure 15.a
Draining the boiler
- Shut down the CH and DHW program and disconnect the 230V power supply
- Close the isolation valve CH fl ow (1) & CH return (2)
- Unscrew the cap nut from the return pipe fi lling loop connection (3)
- Connect a hose and drain socket (4) to the return fi lling loop connection (3) and lead the other end of the
hose to the drain.
- Slowly open the valve (2A) of the fi lling loop on the return pipe completely. CH water will only be drain out
from the boiler.
- If the CH water from the system and boiler needs to be drained, open the CV isolation valve (2)
Reassembly takes place in reverse order.
Figure 15.b
1 2A
3
2
4
2
2A