Installation and Service Manual Epsilon-Series
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11
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 program (
,
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.
12 Commissioning
Work on the boiler must be carried out by a competent person, (Ref: Gas Safety
Installation, Use and Regulations ) using correctly calibrated instruments with
current test certification.
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 fine 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 the installation of all parts through which gas flows (using leak-
search spray)