
Supplied By www.heating spares.co Tel. 0161 620 6677
15
221473B
6.1 Unpacking
Remove the top carton and cut out the flue template from the
inner flap.
Open the control door, see diagram 6.1.
Remove the two screws securing the outer case and then lift
it at the top and pull it forwards and off, see diagram 6.1.
Remove the cover of the inner case, secured with four
screws, see diagram 6.2
Disconnect the gas cock union and the front unions of the
isolation valves, see diagram 6.3.
Slightly loosen the clips of the gas service cock and the
isolating valves.
Remove the two boiler securing screws then remove the
boiler from the mounting frame, by pulling the studs from the
clips and unhooking it at the top.
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.
6 Installation Preparation
Diagram 6.2
INNER
CASE
COVER
SECURING
SCREW (4)
PILOT
WINDOW
SCREW (2)
DATA LABEL
Diagram 6.3
6957
LOCATION
CLIPS
CLIP (5)
SECURING SCREW (2)
UNIONS (5)
6622
RESET SWITCH AND NEON
INDICATOR
Diagram 6.1
OUTER CASE
OUTER CASE SECURING
SCREW (2)
DOOR
CLOCK TIMER
IF FITTED
5040
CENTRAL
HEATING
SELECTOR
SWITCH