21
Assembling Air/Flue Pipes
Any route can be taken by the air/flue pipes
Note: THE FLUE PIPES MUST BE ASSEMBLED WITH
THE PLAIN END OF PIPE (OR BEND) NEAREST THE
APPLIANCE AND THE FEMALE SOCKET END
FURTHEST FROM APPLIANCE.
ALWAYS ADJUST LENGTH OF PIPES BY CUTTING
PLAIN END. REMOVE BURRS INSIDE AND
OUTSIDE.
KEEP THE OUTSIDE OF FLUE PIPES CLEAN AND
FREE OF OIL OR GREASE.
THE PIPE SUPPORTS AND CLIPS MAINTAIN A
SPACING OF 63mm BETWEEN THE PIPE CENTRES
– SEE FIG. 17.6. THUS INNER PIPE(S) OF STACKED
RUNS ARE 63mm OR 126mm SHORTER THAN
OTHER PIPE DEPENDING ON THE NEXT CHANGE
OF DIRECTION.
Fig. 17.3
Fig. 17.4 Flue Clamp
a Measure and cut the first pair of flue pipes away from
the appliance (within duct). Smear a film of silicone
sealant (approx. 0.5mm thick) around mating surface of
pipes. Push pipes firmly into the sockets using a
twisting motion to spread sealant.
b Measure and cut next pair of air/flue pipes. Slip pipe
supports along pipes as required before engaging pipes
with socket of preceding pipes or bends.
c Smear a film of sealant (approx 0.5mm thick) around the
male pipe surfaces before pushing pipes firmly together.
Select the duct bend (if required) and insert pipe bends.
Push plain end of pipe bends into pipe sockets. Repeat
above procedure to reach terminal. Ensure that air inlet
and flue gas connections are correctly made as
indicated in Fig 17.1.
d Fix pipe supports to masonry or woodwork so that flue
pipes are held securely in position.
e Check especially that every joint within the duct is
thoroughly sealed before fitting the duct cover.
NOW REFER BACK TO MAIN INSTALLATION
INSTRUCTIONS ON PAGE 7.
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