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2.2 INSTALLATION
2.0 INSTALLATION
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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