gledhill benchmark BoilerMate A-Class OV Series Design, Installation And Servicing Instructions page 25

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2.0 INSTALLATION
2.2 INSTALLATION
Electrical Connection - Standard Appliance
The BoilerMate A-Class OV is pre-wired to DIN
rail terminals from the A.C.B. and plumbers
are well able to complete the electrical
installation provided they adhere strictly to
the IEE Requirements for Electrical Installations
BS 7671.
All the terminals are suitably labelled.
Note: Do not attempt the electrical work
unless you are competent to carry it out to
the above standards.
Before commencing check that the power
source is in accordance with section 1.2 Site
16A 16A 6A
Requirements and ensure that it is isolated.
Run the external wiring through the service
slot provided in the base of the appliance.
The 2 & E core input cable from the isolator to
the appliance must not be less than 6mm
grade to BS 6500.
This supply cable must be fed via a 32 amp
double pole isolator no more than 2 metres
from the appliance.
Make the connections as shown opposite.
The appliance is provided with a link
between terminals SL_R and L2 on the
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terminal connections. This must be
removed if a room thermostat is fitted see
opposite.
Clamp the cables in the grips provided below
the terminal connections and ensure all cables
are routed to avoid hot surfaces.
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Note:The appliance is provided with a 4.0mm
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earth cable from an earthing strap on the
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primary return (to boiler) pipe to the earth
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stud on the wiring panel.
The supply to the BoilerMate A-Class must be
protected by a type B MCB to BS EN 60898 of
at least 32 amps rating.
Two installer supplied flex cables are required
to connect external room thermostat and
boiler. These cables must each be 4 core and
at least 1mm
For maintenance purposes it is essential that
an all pole isolator is positioned within 2
metres of the remote boiler installation, this
helps in future maintenance to current Corgi
requirements.
Page 25
2 PVC
2 or above in size.