13
221138C
6 I n s t a l l a t i o n P r e p a r a t i o n
Diagram 6.4
Diagram 6.5
2304
FLUE
CENTRE
LINE
CORNER
(Left Flue)
CORNER
(Right Flue)
115Dia.
168
168
0176M
300
TOP OF
BOILER
115Dia.
MIN.
CLEARANCE
584
480
FLUE
TEMPLATE
(Cut from
carton top
inner flap)
BOILER
MOUNTING FRAME
FIXING POINTS
FLUE
CENTRELINE
104
87
C
L
C
L
6.2 Marking
The boiler mounting frame is the same width as the
boiler but the flue connection sticks out above it.
Place the boiler mounting frame on the wall in the
required position, see diagram 2.1 to maintain minimum
clearances. Make sure that the isolation valves are at the
bottom facing forwards and that the frame top is
horizontal, then mark the four wall fixing points through
the holes in the two horizontal straps.
Position the flue template on the wall, the arrow points
on the centres of the two upper fixing points previously
marked, see diagram 6.4 which also shows dimensions.
For rear flue, mark the rear flue position as required,
centre and/or diameter.
For a side flue, mark the horizontal flue centre line at the
sides of the template. Extend the flue centre line
horizontally left or right to the internal corner where the
flue is required to exit to outside. Mark the position of
the circular hole, on the flue exit wall, using the
dimensions given in diagram 6.5.
From the flue position marks, check that the flue
terminal will be in a suitable position, see diagram 3.6.
6.3 Flue Hole Cutting
Cut the hole horizontally in the wall, to the diameter
shown in diagram 6.4, using, preferably, a core drill.
After cutting the hole, check that it will accept the
wall sleeve.
6.4 Wall Sleeve
Note: The wall sleeve should be used for all installations.
Place the wall sleeve into the hole, flush with the outside
wall face and seal around the sleeve to make it
weatherproof on the outside and internally “good”.
Access to the outside is possible through the sleeve.
If the sleeve is too long, cut it to the same length as the
wall thickness.
For wall thicknesses over 300mm, the wall sleeve must
be fitted flush with the outside wall face. Make good the
external wall face, leave the internal wall face till later.
6.5 Boiler Mounting Frame Fixing
Position the flue template over the flue hole and check
the position of the wall fixing points. Mark the position
of the fixing holes again, if required.
Drill the four fixing holes and insert wall plugs to suit
No.10x50mm long screws.
Secure the boiler mounting frame to the wall using
No.10x50mm long screws.