EN2R-9053 0408R11-NE
12
ELECTRICAL CONNECTIONS AND WIRING
WARNING
Take care that installer is a trained experienced service
person.
Disconnect power supply to prevent electrical shock
and/or equipment damage.
IMPORTANT
Wiring must be in accordance with local regulations.
The appliance manufacturer’s instructions should
always be followed when provided. If such
instructions are not provided see the connection
diagrams for typical systems.
Before installing or replacing any control check that
type number is correct for the application.
Ensure combustion chamber is free of gas before
start up.
Conduct a thorough check out when installation is
completed.
At the first start the boiler control can be in lock-out;
depress reset button to free control.
CAUTION
Do not connect the boiler control to power supply when
it is not connected to the gas control.
Wiring
•
Use leadwire which can withstand at least 105°C ambient.
•
Use leadwire which is proven against moisture.
•
Wiring between boiler control and spark sensing probe
should have good quality insulation, suitable for the
temperatures encountered.
•
Keep high voltage spark wire at least 10 cm. away from
other wires.
•
Conduct spark wire as close as possible along shield metal
or metal pipes.
Fusing
The boiler control has to be externally fused at maximum 2A
slow sand filled.
This can be done externally or optional integrated.
The integrated fuse has to be mounted and demounted as
follows:
Demount:
Press with screw driver the fuse cover
against spring inside fuse holder and
turn 90° to left. Release screw driver.
Fuse holder including fuse can be taken
out.
Mount:
Mount new fuse in fuse cover and place
total in fuse holder. Press cover carefully
against spring in fuse holder, and turn
90° to right.
Spark gap
Max. allowable spark gap 3.5 mm (recommended 3 mm.)