gledhill benchmark BoilerMate A-Class OV Series Design, Installation And Servicing Instructions page 26

An open vented central heating and mains pressure hot water supply system

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The BoilerMate A-Class incorporates a pump overrun for the boiler pump and

terminal L1 on the terminal strip (as shown on page 23) should only be used if

the boiler requires a permanent live for another purpose.

The boiler manufacturers wiring instructions should be read in conjunction with this

manual.

Before switching on the electrical supply check all the factory made terminal

connections to ensure they have not become loose during transit.

Frost Protection

When frost protection is required for the whole house or where a base temperature is

required during cold weather, the programmer should be set to constant during the

time required and the room thermostat adjusted to a suitable setting.

When the location of the boiler means that frost protection is required the boiler

speciﬁed should incorporate its own integral frost thermostat.

Important

When the boiler has an integral frost thermostat ﬁtted it will be necessary for the

primary pump to be powered from the pump connections within the boiler. In this

case the primary pump ﬂex should be unplugged from the controller PCB at connector

point J32 (see wiring diagram for location) then the plug and ﬂex should be removed

from the pump terminals.A connection from the boiler pump connections L,N,E should

be made to the L, N, E terminals of the primary pump. This will need an additional

three-core cable running between the boiler and BoilerMate.

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2.0 INSTALLATION

2.2 INSTALLATION

Page 26

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