Installation & Servicing Instructions ATAG Q-Series
33
12 Isolating the boiler
In some situations it may be that the entire boiler must be switched off. By switching
off the three keys with the lamps for central heating, hot water and pump programme
(
, or ), the boiler is switched off. Leave the plug in the wall socket, which
means the circulation pump and the three-way valve are activated once every 24 hours
in order to prevent jamming.
In the event of frost danger it is advisable to drain the boiler and/or the
installation.
13 Commissioning
Work on the installation and/or boiler should only be carried out by qualied
personnel with calibrated equipment and appropriate tools.
At the time of commissioning, complete all revelant sections of the Benchmark
Checklist located on the inside back pages of the document.
To commission the boiler the casing has to be removed. The casing is locked with a
screw behind the door on the front and the top of the casing is hooked behind a locking
edge. After removing this screw the casing must be lifted at the bottom by which means
it is released from the locking edge. Then the casing can be removed forward.
The boiler settings, such as burner pressure and adjustment of the air quantity are
unnecessary, due to the fact that the boiler operates with a so-called zero pressure
control. This means the correct gas quantity is controlled by the suction operation of the
fan. The ne adjustment which is carried out at the factory is once-only, which means
that adjusting of these values is unnecessary. Only in case of replacing of the gas valve,
venturi and/or fan the zero pressure and the incorrect O
2
adjustment has to be checked
and, if necessary, adjusted at the right value.
Always check all gas carrying parts for leaks (with a leak detection spray) after
(maintenance) work to the boiler.
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