14
221954D
5.1 Boiler Preparation
With the boiler still in the bottom tray, slide the controls cover
upwards and remove it as shown in diagram 5.1.
Remove the front cover by undoing (and keeping) the wing nut,
nut and shakeproof washer, then lift the front cover off, see
diagram 5.1.
Place the front cover on one side until required, having removed
the polystyrene packing piece.
Fit suitable compression fittings to the boiler connections.
5.2 Mounting the Boiler
Make sure that the top, swing brackets are UPRIGHT.
Lift the boiler into position, hooking over the mounting bracket.
Swing the brackets over the two screws at the top. Hold the
swing bracket(s) in place whilst tightening the screw(s) on to it,
see diagram 5.2.
Remove the blue and red electrical connections from the fan,
see diagram 5.3.
Break the air pressure switch tube connections from the fan,
see diagram 5.3.
Remove the fan assembly by removing the screws and sliding
out, see diagram 5.3. Take care not to damage the gasket.
Diagram 4.6
SECURING
SCREW (2)
FLUE ELBOW
FLUE DUCT
SEALING
TAPE
AIR DUCT/
TERMINAL
FLUE ELBOW
DUCT
3mm
DRILL
7375
Diagram 4.7
WALL THICKNESS-
UP TO 300mm
Q
FOAM
SEAL
WALL THICKNESS-
OVER 300mm
20mm
Q
7372
4.9 Side Flue
Mark the air duct/terminal assembly and the flue duct at the
lengths shown in diagram 4.5 then cut to length, cutting square
and removing any burrs.
NOTE:
Owing to its variable length the standard telescopic flue
may not need cutting.
4.10 Flue Assembly
Locate the flue duct (drilled end) onto the flue elbow and secure
with the screws supplied in the loose items pack, see diagram
4.6.
4 Flue and Appliance Preparation
Q MINUS 55mm
5 Boiler Installation
NOTE:
The telescopic flue assembly will require drilling.
Locate the flue duct/elbow into the air duct/terminal spigot and
the air duct/terminal into the flue elbow making sure the correct
alignment of top. Drill the air duct and secure/seal (external
fixing, do not seal) as shown in diagram 4.6.
4.11 Wall Liner
If a wall liner is used, fit foam seal as diagram 4.7.
Slacken, but do not remove, the flue hood securing screws, see
diagram 5.4.
5.3 Water Circulation System
Complete the water connections to the boiler.
Fill, vent and flush system.
Check for any leaks and put right.
5.4 Safety Valve Discharge
Fit a suitable discharge pipe to the safety valve and route it
outside the building so that any discharge can be seen but will
not cause injury to person, damage to property or any electrical
installation.
5.5 Gas Connection
Make the gas connection to the Rc
1
/
2
in gas service cock, see
diagram 5.5.
The whole of the gas installation, including the meter, should be
inspected, tested for soundness and purged in accordance with
the current issue of BS6891 and in IE the current edition of
I.S.813 "Domestic Gas Installations".