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15 Commissioning
Work on the installation and/or boiler should only be carried out by qualied 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 gure 16.a
Note that there is an earth cable 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 placing back
the boiler front panel and take care the wire does not get stuck between front panel and boiler.
Changing settings, such as the burner pressure and the amount of air ow, is superuous. 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 gure 15.a.
Draining the boiler
The heating installation must be provided with a ll and drain valve. Use this feature also for draining the
boiler.
OPEN CLOSED
CH FLOW CH RETURNGAS
Figure 15.a
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