Keston Combi 35kw User Manual download pdf (Page 20)

INSTALLATION

Keston Combi - Installation and Servicing

FLUE OUTLET

18 ASSEMBLY PRACTICE

Remove all plastic debris and burrs when installing air intake

piping. Plastic llings caused by cutting muPVC pipe must not

be allowed to be drawn into the combustion air blower. Prevent

dust entering the air intake when cutting on building sites. Blower

failure which is determined to be caused by plastic lings or other

debris will not be covered by guarantee.

INSTALLING FLUE AND AIR PIPES

Important - When installing the boiler on an existing system a

new ue and air intake system MUST also be installed. You

MUST NOT re-use existing ue or air pipework components.

• Remove the ue adaptor and air spigot from the ue pack

supplied with the boiler.

• Remove boiler front panel - Frame 39.

• Remove air intake blanking plate by unscrewing 4 x M5

screws and put to one side, leaving sponge gasket in

place.

• Fix air spigot to boiler using the 4 M5 screws, see diag.

below. Ensure sponge gasket is in place and not damaged.

• Insert the ue adaptor into the ue manifold on the top of the

boiler and secure using the clamp provided in the packaging

box, see diagram below.

• Measure, cut and check the air and ue pipes to pass to the

exit from the wall(s) or ceiling.

• Always thoroughly deburr all pipes and most important,

remove shavings from within the pipe.

• Assemble, using solvent weld cement, the pipework from

the boiler connections to the exit from the rst 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 and solvent

welded with no leaks.

• Using the same methods drill any further holes (always

covering existing pipework), cut and assemble the

pipework.

• From outside, complete the two terminations - See Frame

8 Flue System and make good all holes. (Wall sealing

collars are available to make good hole areas on the wall

face (part number C.08.0.00.07.0).

• 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. Brackets should be

loose enough on the pipe to allow thermal expansion

and contraction movement.

• Flue pipework through walls MUST be sleeved to

allow thermal expansion and contraction movement.

• Check all connections for security and re-seal any joints

using solvent cement where soundness may be in doubt.

Note. It is equally important to seal the air inlet with solvent

cement as the ue outlet pipe joints.

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Keston Combi 35kw User Manual Page 20

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