12
4.3.1
PREPARING THE
HORIZONTAL DUCT
a) Measure the required horizontal flue length as shown in
Fig 15.
b) Fit the external sealing ring (grey) to the terminal assembly
and assemble the air/flue ducts as shown in Fig 17.
c) Achieve the correct flue length using Fig 17 as a guide. Note
that the flue length is measured from the inside of the external
(grey) sealing ring. In most cases it will be possible to achieve
the required flue length without cutting the ducts. Where
necessary cut only the plain ends of extension ducts and
NEVER CUT THE SWAGED END. Ensure all cuts are square
and free from burrs and debris.
d) The horizontal terminal duct should never need to be cut as it
slides into both extension ducts and the standard duct. Ensure
at least a 50mm (2 in) overlap.
e) Assemble the flue using Fig 17 as a guide. It is important that
the steps are carried out in the order stated in Fig 17. Ensure
the internal sealing ring (white) is fitted to the system before
securing the ducts.
f) Prior to fitting the standard flue duct to the flanged elbow,
ensure all ‘O’-ring seals are correctly located and intact.
g) All ducts should be secured by drilling two 3.3mm diameter
holes and using the self-tapping screws supplied in the flue kit.
ENSURE THE HORIZONTAL TERMINAL IS FITTED
HORIZONTALLY AND THE CORRECT WAY UP WITH
THE RAINSHIELD AT THE TOP (SEE FIGURE 17)
17
16
FIT STRAIGHT AND ELBOW ADAPTOR
17
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76mm
453mm
767mm
EXTENSION
17mm
INSIDE EDGE OF
EXTERNAL SEAL
IN POSITION ON
AIR DUCT
TOP
MAX. 319mm
MIN. OVERLAP
50mm (2in)
L
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ACHIEVING THE CORRECT LENGTH
AND ASSEMBLING THE FLUE
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L
1 SLIDE EXTERNAL
SEALING RING UP TO
FLUE TERMINAL
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INTERNAL
SEALING
RING
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5 STANDARD
TERMINAL
Slide telescopic
section to achieve
length ‘L’
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6 Drill and
screw
telescopic
overlap
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3 EXTENSION
Push extension duct
(if required) over
standard duct,
engage fully.
Drill two 3·3mm dia.
holes and secure with
self-tapping screws
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2 STANDARD DUCT
Push ducts fully over elbow
and drill two 3·3mm dia.
holes. Secure with self
tapping screws
4 Check terminal
is correctly aligned
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60mm
ELBOW
AIR DEFLECTOR
PLATE
STRAIGHT
ADAPTOR
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FLUE HOOD
SECURING SCREWS
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