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P A R T 8 : F L U E D U C T I N G I N S T A L L A T I O N
Figure 19
Figure 20
Figure 21
8.1
The fireplace surround will have to be cut away at the side where the duct
connects to the appliance. A template is supplied to aid accurate cutting. It will
be simpler if the side is cut before assembling the top to the sides. Place the
template against the surround side as shown in figure 19. Mark the shape of the
opening on the surround. Cut the opening .
8.2
Cut the backing plates to length. Note that the appliance end of the backing
plate should abut against the outside face of the fireplace surround side. It does not go inside
the surround.
For corner installations the ends of the plates must be mitred and butted
together even when covered by the elbow front covers. Small children
could touch the hot ducting if there are any gaps between the top horizontal
flanges or bottom angled flanges of the backing plates.
8.3
Measure the length of the duct run between the intersection of the
horizontal and sloping sections of the "Z" coupling ("A" in fig. 20), fan box
spigot and, if applicable, elbows. The ducts must run from within 10mm of
the intersection"A" and enter the fan box spigot or elbow by a minimum of
40mm and a maximum of 70mm.
A bridging tube is supplied to aid manipulation of the ducts while installing.
The swaged end of one duct (the end with the seal) can be cut to allow a
gap of up to 125mm to be bridged (see figure 21).
Cut the ducts to suit the installation.
16
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