5.1 WATER CONNECTIONS
The ow 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, down and through the pre-cut openings provided
in the base of the enclosure for ‘free standing’ installations, or
through an unused side ue exit opening (a spare blanking plate
with a 112mm diameter hole is supplied, which is intended to
provide an opening for a 110mm soil pipe to be used as a pipe
duct through the wall). 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. Fit the ue starter elbow in the chosen position. This should
be done at this point to ensure the starter elbow will not
conict with any of the pipework. Refer to Sections 4.7 and 9.
3. Carefully manoeuvre the boiler in position to line up with
pipework through the wall. Complete the water connections.
Note: Check that the baes are in position and that the
cleaning cover is correctly tted and a good seal made.
4. If the boiler is installed against a wall, t the wall ashing
strip. Position the strip with the bottom edge of the wider
ange 20 mm above the enclosure top panel, with the narrow
ange (with the three xing holes) at against the wall. The
strip should overhang the top panel by an equal amount at
each end.
5. Mark the position of the three xing 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 ow
connection. This 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.
! CAUTION !
All pipes to be tted into the push-t 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 ttings should
not be cut square using a hacksaw.
5.2 WATER CONNECTIONS -
SEALED SYSTEM MODELS
A 15 mm discharge pipe must be connected to the safety valve
outlet connection. The pipework between the safety valve and the
boiler must be unrestricted, that is, no valves. The discharge pipe
should be run to the outside of the building and terminate so that it
cannot cause injury to persons or property. Refer to Section 7 for
further guidance.
A 15 mm double check valve ballox type valve is provided on the
exible lling loop hose for connection of the cold mains supply to
the heating system.
The cold mains supply should terminate inside the boiler casing.
A drain cock is tted at the bottom on the front of the boiler to
allow the heating system to be drained.
The expansion vessel is connected via a exible hose to allow it to
be moved to gain access to other components for servicing.
When replacing the vessel, care should be taken to ensure that
the exible connecting hose is not twisted.
! NOTE !
For guidance on the connection of the heating system
pipework, please refer to Sections 4.7, 4.8, 5.1 and 7.
Section 5: Pipe ConnectionsPage 16
5 PIPE CONNECTIONS
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