Electrical - Worcester GREENSTAR 25CDi GC Instruction Manual

ELECTRICAL
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CAUTION: ISOLATE THE MA!NS
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ELECTRICITY SUPPLY BEFORE STARTING
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ANY WORK AND OBSERVE ALL
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RELEVANT SAFETY PRECAUTIONS
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EARTH
=0
LIVE . . .
NEUTRAL
=4)
SWITCHED LIVE =
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t'THERMOSTAT
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Danger of short circuit: When connecting
the cables ensure that no cable pieces fall
into the H eatronic.
Note: Mains supply to the boiler must be
through a fused double pole isolator situated
adjacent to the appliance. The isolator must
have
a
contact separation of 3
mm
minimum in
all poles.
Access to electrical connections:
.. Remove boiler casing to access control panel.
\ 1. Lower the control panel into the service
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position by removing the screw (X) from the
retaining bracket.
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2. Unscrew the three screws (B) on the back
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of
the control panel and pull off the connec­
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tions cover.
3. Unclip cable clamp (C) .
4. Cut off the tapered cable entry to fit cable
diameter required.
5. Turn cable retaining screw (D) anti-clockwise.
Run cable over the main crossbar and
through the cable clamp (C). ensuring there
is ample cable to reach the connectors.
Turn cable clamping screw (D) clockwise to
secure cable and replace clamp (C) into
control panel.
6. Mains power 230 V connection (ST10):
.. Separate wires from cable end and strip to
6mm
.. Connect LIVE wire to terminal (L)
.. Connect NEUTRAL wire to the terminal (N)
.. Connect EARTH wire to the earth connec ­
tor{
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NOTE: Earth cable to
be
longer so that it
pulls out last
if
mains cable is snagged.
7.
Optional external frost thermostat connec·
tion (ST6):
.. Connect frost thermostat supply wire to ter­
minal (Fs)
.. Connect frost thermostat return wire to ter­
minal (FR)
8. 230V room thermostat and/or external timer
(ST10):
... Remove link
.. Connect room thermostat LIVE supply to
terminal (Ls)
.. Connect room thermostat LIVE return to ter­
minal (LR)
.. Connect room thermostat NEUTRAL to ter ­
minal (Ns)
9. Refit control panel cover:
... Refit panel and secure with screws (B).
.. Bring the control panel to its upper position
and
fIX
it with screw (A).
INSTALLATION & SERVJCING INSTRUCTIONS FOR WORCESTER BOSCH (JREENSTAR 25CDi/3OCOi/37COV42 COi
AIoRCESTER
ELECTRICAL
6720 613700a (2006/11)