33
Refer to Section 4.11 and 4.12 and Fig. 12. for the size,
type and position of the connections.
The Flow and Return pipework can be routed to
either side of the boiler, dependant on the type
and direction of the flue system used.
For condensate disposal pipework refer to Section 5.
IMPORTANT: All pipes to be fitted into the push-
fit connectors provided should be cut using a
pipe slicer or pipe cutter - to leave the pipe ends
with a slight radius and free from any burrs or
sharp edges. Pipes to be used with these fittings
should not be cut square using a hacksaw.
Pipe entry/exit holes in case
All models have holes to enable the pipework to
exit the boiler casing. On the 15/21 and 21/26
models these holes are pre-cut knock-outs
located at the rear of both side panels and on the
26/35 model these pre-cut holes are in the
removable flue outlet cover plates.
Push out the 'knock-out' from the required holes,
taking care not to distort the side panel.
If access will be restricted, make any connections
to the boiler before placing it in its final position.
If using a balanced flue system - Install the
balanced flue system before connecting the
heating system pipework to the boiler. Once the
flue system is fitted then complete the water
connections and fill the heating system.
If using a conventional flue system - Complete
the water connections and fill the heating system.
Check all connections for leaks and rectify as
necessary. If the iQE sealed system kit is fitted,
refer to Section 6.6 for details on filling and
venting the sealed heating system.
6 - BOILER INSTALLATION
1. Lift off upper rear casing panel.
2. Remove the insulation from the underside of
the panel (do not discard it). Carefully press
out the pre-cut flue opening in the top panel.
3. Unscrew the protective covers from the studs on
the flue dress panel supplied in the literature
pack. Place the dress panel in position in the rear
casing top panel and secure in place using the
nuts and washers previously removed.
4. Re-fit the insulation to the panel with the foil
surface facing outwards. With a sharp knife cut
around the edge of the round opening in the
dress plate to leave a round hole through the
insulation for the flue.
5. If the iQE O-system is being used –follow
the instructions supplied with the flue kit.
6. If the iQE G-system (100 mm rigid twin-wall
flue) is to be fitted to the boiler then the iQE
adaptor kit (Ref. iQE CF15/35) must be used –
refer to Section 4.1. To fit the adaptor kit,
proceed as follows.
7. Fully screw the length of threaded studding
(provided in the kit) into the nut located in
the centre of the boiler flue outlet.
8. Fit the boiler connector (from the CF adaptor
kit) over the threaded studding. Position flange
on to the neoprene gasket around the boiler
flue outlet, ensuring that small spigot on the
base of the connector is located in the hole in
the centre of the neoprene gasket and that end
of studding passes through the hole in the of
the spacer bracket. Fit washer and wing nut
provided onto end of threaded studding and
secure connector in position by tightening
down on wing nut – as shown in Fig. 21.
9. Re-fit the rear top casing panel to the boiler
–fitting it over the boiler connector.
10. Fit the flue adaptor (from the adaptor kit) into
the boiler connector. Note lubricate the seal on
the adaptor using the lubricant provided
before attempting to fit the flue adaptor.
11. Fit the first section of flue into the flue adaptor
and secure using the clamp band provided.
12. Assemble the remainder of the flue system
as required, lubricating the seal on each
component before fitting.
Fig. 19 - Boiler flue connector
iQE Horizon Internal Oil Boiler
6.4
Make the water connections
6.5
Connect a conventional flue
