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Example
Edge of Boiler
2m
Horizontal
Side Flue
Centre Line
Centre
Hole
Wall Plate Template
Fig. 20
Backfall to the Boiler, ie. 2m flue offset (V) position 110mm
Flue Duct Hole
Offset V (mm)
V
0.5
Distance in metres from boiler to the wall.
For pipe lengths greater than 4m increase the off-set by 52mm
for every additional metre to maintain approx 3° inclination.
Fig. 21
Centralising
© Baxi Heating UK Ltd 2006
125mm
EXAMPLE: Boiler is 2 metres away
from corner of wall, flue duct hole is
110mm up from horizontal side flue
Example
centre line. This will maintain the
V = 110mm
approx 3° backfall to the boiler.
Wall Thickness
up to 227mm
up to 750mm
up to 1200mm
27
55
110
165
1.0
2.0
3.0
4.0
(metres)
Screw
Wall Plate
8.0 Installation
Check Site Requirements (section 7) before
commencing.
8.1
The gas supply, gas type and pressure must be
checked for suitability before connection (see Section
7.4).
NOTE: If the boiler wall plate is to be pre-hung,
follow both these instructions and those on the
boiler pack.
Flue Hole ø
125mm core drill
1. Remove the fixing template (Fig. 20) from the carton.
150mm core drill
2. After considering the site requirements (see Section
175mm core drill
7.0) position the template on the wall ensuring it is level
both horizontally and vertically.
NOTE: When fitting Plume Displacement Kit refer
to the instructions supplied for details of
installation of the flue.
3. Mark the position of the centre hole for the wall
plate (Fig. 20).
220
(mm)
4. Mark the centre of the flue hole (rear exit).
3°
For side exit: project the horizontal side flue centre line
into the corner of the room and along the wall to
where the flue hole will be drilled. (Fig. 20).
The diagram (Fig. 21) shows the dimensions required to
ensure any horizontal flue is installed with the correct
fall to the boiler. Mark the offset (V) dimension and if
required, mark the position of the gas and water pipes.
Remove the template.
5. Cut the hole for the flue (minimum diameter
125mm, see table (Fig. 20) for wall thicknesses and flue
diameters).
6. Drill and plug the wall as previously marked. Secure
the wall plate using the centre hole (Fig. 22).
7. Ensuring the wall plate is level both horizontally and
vertically, drill and plug at least 4 securing positions at
the top and bottom through the wall plate. Utilising the
slots available ensure the wall plate is square and secure
to the wall (Fig. 22).
8. Loosely route the condensate discharge pipe to the
lower left hand side of the wall plate.
Fig. 22
Initial Preparation
23
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