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WD53/0/1999
a
From the two connections on the boiler, mark the positions of the two holes for
the flue and air pipes on the wall(s) or ceiling. To allow access to drill the holes it
may be necessary to temporarily remove the boiler. If the boiler stays put then it is
imperative that the front doors are closed and the two plastic pipes capped off
whilst drilling. Under no circumstances must debris from the wall or cut pipes be
allowed to enter the appliance or the plastic pipework.
b
Drill the two holes in the wall/ceiling, preferably using a core drill.
c
Always thoroughly deburr all pipes and, most important, remove shavings from
within the pipe.
d.
Assemble the pipework from the boiler connections to the exit from the first
wall/ceiling (remount the boiler if removed). When pushing pipe through walls,
ensure grit and dust is not allowed to enter the pipe.
ENSURE PIPES ARE FULLY ENGAGED INTO SOCKETS.
Connect the condensate drainage system and fill the condensate trap by pouring
water down the boiler flue spigot ( See Section 3.6 Condensate Drainage).
Make the final connection of flue and air pipe to the boiler using push on
plastic couplings. Ensure that the connectors are set vertically otherwise
leakage of condensate may occur which will corrode the casing. Do not use
adhesive on the 'push on' end of connecting couplings.
e.
Using the same methods drill any further holes (always covering existing
pipework), cut and assemble the pipework.
f.
From outside, complete the two terminations - See Section 2.7 Flue System and
make good all holes.
g.
Support any pipes whose route could be displaced either of its own accord or by
accident. Any horizontal run over 1m or vertical runs of any length must always be
supported. Brackets should be placed at intervals of approximately 1m.
h.
Check all connections for security.
3.6
CONDENSATE DRAINAGE
Connect the condensate drainage system to the boiler. It is advisable to use a detachable
fitting at connection to the boiler to enable easy removal for servicing.
Fill the condensate trap by pouring water into the boiler flue spigot until water is seen to
flow freely from the condensate drainage system. Make the final connection of flue pipe to
the boiler.
Details are provided in Chapter 2 - Section 2.10 Condensate Drainage
Connection :
3.7
WATER SYSTEM
Connect the flow and return pipework to the boiler. Details of system requirements are
given in Chapter 2 - Section 2.6 Water Systems.
Connections
3.8
GAS SUPPLY
Connect the gas supply to the appliance. Details of gas supply requirements are given in
Chapter 2 - Section 2.5 Gas Supply. Supply of adequate gas pressure (with the boiler
running) is critical to ensure reliable operation of the boiler.
Connections
Installation & Servicing Instructions
Chapter 3 : Installation
22 mm plastic pipe.
: 2" BSP F.
: 1.25 inch BSP F.
The Keston 260 & 340 Condensing Boilers
Page : 14
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