Flue Preparation; Rear And Side Flue Application; Flue Hole Cutting - Saunier Duval Xeon 50ff Instructions For Use Installation And Servicing

4.3 Flue Preparation

All flue assemblies are designed for internal installation (optional
wall liner is required), given that there is sufficient clearances
opposite to the flue for the installation of the flue.
If there is insufficient clearance the flue can be installed from
outside.
For a wall thickness up to 300mm, provided that there is
sufficient space and the optional wall liner kit is used the flue can
be fully installed from the inside.
For a wall thickness of over 300mm the external flue hole will
need to be made good from the outside. This applies also if you
use the flue kit without the optional kit, irrespective of wall
thickness.

4.4 Rear and Side Flue Application

Select the boiler location and flue application, with due regard
to the terminal position.
Take the template from the boiler pack and temporarily position
it on the wall, making sure that the minimum clearances are
maintained, see diagram 1.2.
For a rear flue mark the position of the flue as diagram 4.4.
For a side flue, extend the centre line horizontally left or right to
the corner of the adjacent surface where the flue is required to
exit to outside. Mark the position of the centre of the flue and
boiler, as diagram 4.4.

4.5 Flue Hole Cutting

Having marked out the flue centre cut a hole for the flue using,
preferably, a 115mm minimum core drill.
TEMPLATE
BOILER
CENTRELINE
7 dia.
221658B
4 Flue and Appliance Preparation
3
/ in dia.
16
PLUG
7 dia.
TOP BOILER
MOUNTING
HOLES
FLUE
CENTRELINE
MOUNTING
BRACKET FIXING
POINTS
3 / in dia.
16
PLUG
BOILER
CENTRE LINE
REAR FLUE
NO.
12x2in
BOILER
CENTRELINE
NO.
12x2in
14
115mm
MINIMUM
HOLE
14mm
FLUE
CENTRE LINE
5mm
FLUE
CENTRELINE
BOILER
MOUNTING
BRACKET
75mm
SIDE FLUE
Diagram 4.4
Diagram 4.5