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5 Pipe Connections
5.1 Water Connections
The flow and return pipework can exit
the boiler enclosure either through the
pre-cut openings provided in both sides
(under the movable cover plates) and
through the wall when installed against
the building, or down and through the
pre-cut openings provided in the base
of the enclosure for ‘free standing’
installations. See Section 2.6.
Push out the ‘knock-out’ from the
required holes, taking care not to distort
the side panel or base.
For condensate disposal pipework refer
to Section 6.
1. To gain access to the water
connections, remove the two
screws securing the bottom of
the back panel and remove it by
withdrawing it forwards at the
bottom. Remove the top casing
panel.
2. Carefully manoeuvre the boiler in
!
NOTE
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.
is located on the top of the boiler. The
pipe will need to be vented, as it is
the highest point on the primary heat
exchanger.
Return connection: A 22 mm pipe
is provided for the return connection.
This is located on the top of the boiler.
The pipe will also need to be vented at
some point, as it is the highest point on
the secondary heat exchanger.
position to line up with pipework
through the wall. Complete the
water connections.
Note: Check that the baffles are
in position and that the cleaning
cover is correctly fitted and a good
seal made.
3. If the boiler is installed against
a wall, fit the wall flashing strip.
Position the strip with the bottom
edge of the wider flange 20 mm
above the enclosure top panel,
with the narrow flange (with the
three fixing holes) flat against the
wall. The strip should overhang the
top panel by an equal amount at
each end.
4. Mark the position of the three fixing
holes onto the wall, drill and plug
the wall and secure the strip with
suitable screws (not supplied).
Flow connection: A 22 mm pipe is
provided for the flow connection. This
Figure 5-1: Water connections and themostat phial positions (utility models)
Figure 5-2: Water connections and themostat phial
positions (15/21 and 21/26 system models)
Figure 5-3: Water connections and themostat phial
positions (26/35 system models)
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