Installation - Baxi System 100 HE Plus Installation & Servicing Instructions Manual

Edge of Boiler
Centre
Hole
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
Fig. 20a
for every additional metre to maintain approx 3¡ inclination.
Plastic Flushing Tube
Fig. 21
Example
2m
Horizontal
Side Flue
Centre Line
EXAMPLE: Boiler is 2 metres away
from corner of wall, flue duct hole is
110mm up from horizontal side flue
centre line. This will maintain the
approx 3° backfall to the boiler.
Wall Plate Template
27 55 110 165
1.0
2.0
3.0
4.0
(metres)

8.0 Installation

Example
V = 110mm
Check Site Requirements (section 7.0) 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 is to be pre-plumbed, follow both
these instructions and those on the boiler pack.
1. Remove the fixing template (Fig. 20) from the fixing
carton.
2. After considering the site requirements
(see Section 7.0) position the template on the wall ensuring
it is level both horizontally and vertically.
3. Mark the position of the top centre hole for the
wallplate.
4. Mark the condensate discharge pipe area.
5. Mark the centre of the flue hole (rear exit).
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. 20a) shows the dimensions required to
ensure any horizontal flue is installed with the correct fall to
220 (mm)
the boiler. Mark the offset (V) dimension and if required,
mark the position of the gas and water pipes. Remove the
3¡
template.
6. Cut the hole for the flue (preferably with a 125mm/5"
diameter core boring tool), ensuring that the hole is drill at
approx 3° up from the horizontal. Both wall faces
immediately around the cut hole should be flat.
7. Drill and plug the wall as previously marked. Secure the
wallplate to the wall by the top centre hole.
8. Ensuring the wallplate is level both horizontally and
vertically, drill and plug the remaining 4 securing positions at
the top and bottom through the wallplate. Utilising the slots
available ensure the wallplate is square and secure to the
wall.
9. Connect the gas, water and the pressure relief discharge
pipes to the valves on the support bracket using the
compression fittings supplied.
10. Loosely route the condensate discharge pipe to the
area previously marked.
8.2
1. Insert a tube into the valve outlet furthest from the filling
loop (Fig. 21).
2. Flush thoroughly (see System Details, Section 6.0).
Initial Preparation
Flushing
21