16
Making the push-fit connection
The connector must be in its relaxed position before the pipe is
inserted. In this position, there is a small gap between the screw
cap and connector body.
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3
1
2
4
1 Retainer
2 Screw cap
3 Gap between screw cap and connector body
4 Connector body
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Ø Pipe diameter mm 22
A Insertion depth mm 38
!
Material losses
Pipe ends must be deburred.
Always use a pipe cutter to trim pipes.
Push the pipe past the O-ring into the push-fit connector
until it reaches the prescribed insertion depth.
Tighten the screw cap fully to the joiner body until fin-
ger-tight. This secures the push-fit connection.
Undoing the push-fit connection
If the push-fit connectors later need to be undone, proceed as
follows:
Turn the screw cap anti-clockwise until there is a narrow gap
of approx. 2mm. Press the retainer back with your fingers
and hold on to it.
Pull out the inserted pipe.
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5.3.2 Fitting the push-fit connectors
An elbow push-fit connector is prefitted on the heating flow in
the function module.
Fit the elbow push-fit connector onto the heating flow port
on the r.h. side of the cylinder module.
Push a straight push-fit connector on each of the two pipes
on the r.h. side of the cylinder module.
Connect both of the free pipes inside the function module to
the push-fit connectors that you previously attached to the
cylinder module pipes.
Refit the high limit safety cut-out retaining bracket from the
inside using the slots and secure the bracket.
5.4 Heating water connection
The heating system must be connected by a qualified contractor in
accordance with the water installation drawings, which are part of
the technical guides. You can use the push-fit connectors supplied
or ball valves to make the connection of the flow and return.
Note
Deburr the pipe ends.
A filter ball valve is provided for the return. Two union nuts and
two short flanged copper pipe ends are provided for fitting a ball
valve.
As a suitable point, install an air vent valve at the highest
point of the heating system.
Thoroughly flush the pipework before connecting the ap-
pliance. Foreign bodies such as welding pearls, rust, sand,
sealant, etc. can impair the operational reliability of the ap-
pliance, and can lead to the condenser becoming blocked.
Remove the protective caps from the heating flow and hea-
ting return connections.
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