Keston 50 - GC Installation And Servicing Instructions page 56

KESTON CONDENSING BOILERS
INSTALLATION KEY POINTS
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Read Installation Manual Carefully
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For open systems ensure that there is at least 8 feet head of
water pressure at the top of the boiler.
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DO NOT remove the dust caps from the air and exhaust pipes
until ready to connect.
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Ensure that ALL dust particles, filings , plastic chips etc. are
removed from the inlet pipe.
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If the installation is a replacement the system must be flushed
clean. System should be drained hot, then refilled, then drained
again until the water is clean.
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Ensure that there is a proper electrical supply ie 230V fused at
5A.
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Take great care with pipe connections to ensure that no
damage is done to the internal pipework.
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Ensure that the 22mm condensate pipe is not exposed to
freezing conditions.
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Make sure that the exhaust pipe terminates away from windows
or vents and is out of reach.
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Make sure that the air inlet and exhaust pipe outlets are at least
350mm apart.
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Check tightness of all connections in the boiler before firing.
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Ensure that the terminals supplied are fitted to both the exhaust
and air inlet pipes.
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Ensure that the air inlet terminal is facing upwards to prevent
entry of rain.
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The system must be free from air before firing.
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The pump must always run when the boiler is firing.
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Gravity circuits are not allowed.
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If TRV's are installed on radiators ensure that a bypass is
installed to maintain required flow.
IMPORTANT
KESTON 50, 60 & 80
WD 92/0/1997