Strebel S-FX 125, Installation Operating & Maintenance Manual

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6.14 Installing a strainer and/or dirt separator
Always install a strainer (water filter)
and/or a dirt separator in the return pipe
of the boiler; in such a way that the water
going to the boiler is free of any
debris/particles.
When using a water filter always check
a week after installation to determine the
strainer cleaning interval. Advice is to
mount valves before and after the
strainer, including an air bleed valve, so
the strainer can be isolated from the
heating circuit for service operations.
Clean water is very important, blocked
and/or
polluted heat exchangers,
including failures and/or damages
caused by this blockage are not covered
by the warranty.
6.15 Plastic piping in the heating system
When plastic pipes with no oxygen barrier e.g. under-floor heating system, are used in the central heating system,
these should be separated from the boiler system by using a plate heat exchanger. Diffusion (through the plastic)
can cause air to enter the heating system. This could damage the boiler, pumps and other components in the
system. Be aware that plastic piping is often used in under floor heating systems. When no measures have been
taken to prevent the entrance of air into the boiler system, the warranty of the boiler and any boiler part may be
deemed invalid.
SYSTEM WITH DIRT SEPARATOR
SYSTEM WITH STRAINER
SYSTEM WITH STRAINER AND DIRT SEPARATOR
DIRT SEPARATOR
DIRT SE-
PARATOR
WATER
RETURN FROM
SYSTEM
WATER
RETURN
FROM
SYSTEM
WATER
RETURN
FROM
SYSTEM
WATER FLOW TO
BOILER(S)
WATER FLOW TO
BOILER(S)
WATER
FLOW TO
BOILER(S)
DIRT
BLEED
VALVE
DIRT
BLEED
VALVE
AIR
BLEED
VALVE
AIR
BLEED
VALVE
VALVE
VALVE
VALVE VALVE
STRAINER
(WATER FILTER)
STRAINER
(WATER FILTER)