gledhill BM125 Installation And Servicing Instructions page 20

A
C D E FG H I J
B
2.0 INSTALLATION
2.2 INSTALLATION
Pipework connections
The position of the pipework connections is
shown opposite. The connection sizes and
dimensions are listed in Section 1.2 Technical
Data.
All the connections are also labelled on the
appliance. It is essential that the pipework is
connected to the correct connection.
The connections can be hard piped but we
recommend the use of fl exible connections
(available as an optional extra).
If using push fi t connectors with the fl exible
hose kits it is important to check that they
are compatible. Written approval has already
been obtained for:-
Hepworth - Hep O BiTite
2
John Guest - Speedfi t
Yorkshire - Tectite
However, as similar assurances cannot be
obtained for Polypipe fittings we cannot
recommend their use.
Connections A, B, C, F and H are plain ended
copper pipe.
Connections D, G and I are compression
fi ttings.
Connection E is blanked 15mm copper pipe
Connection J is RC½ (½ in BSPT internal).
A - Safety open vent
B - Cold feed/expansion
C - Primary fl ow (from boiler)
D - Primary return (to boiler)
E - Towel rail circuit return
F - Central heating return
G - Central heating fl ow
H - Domestic hot water
I - Incoming mains cold water
J - Drain (valve is not provided with the
appliance)
Note: The safety open vent and cold feed/
expansion should be connected to the
F & E cistern using the pipework assembly
provided.
All factory made joints should be checked
after installation in case they have been
loosened during transit.
The fi ttings for the feed and expansion cistern
should be installed following the instructions
provided by the manufacturer in a position
to suit the particular location and the cistern
fi tted on its supports/base.
The cold feed/expansion and safety open vent
should be installed between the appliance and
the feed and expansion cistern.
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