Glow-worm Ultrapower sxi Range - Manual (Page 31)

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Diagram 10.19
14862
10 Vertical Flue - Length, Preparation and Installation
10.11 Vertical flue
The vertical flue system is available as an option where
the boiler position does not permit the use of the top outlet
horizontal concentric flue pack.
The system is made up of accessories. The accessories
include terminal assembly, bends 45º and 87.5º, flue
extensions, fixing bracket and appropriate weather collar, see
diagram 10.20.
The maximum permitted straight flue length is 12 metres
plus the terminal. for each 87.5 o or 2x45 o bends fitted, the
maximum length must be reduced by 1 metre, see diagram
10.19.
10
NOTE: 2x45º bends can replace 1x87.5º bend if necessary.
When using 87.5º bends any horizontal extension pipe should
be inclined by a minimum of 44mm/metre (2.5°) towards the
boiler to facilitate condense removal, see (a) in diagram 10.19.
Alternatively use 45º bends to avoid horizontal runs, see (b) in
diagram 10.19.
The terminal should be positioned at least 600mm from any
opening into the building, refer to diagram 3.2.
Measure the distance of flue length required for the
installation.
The flue must be designed with a continuous fall towards the
boiler.