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ELECTRICAL
EARTH=«)
LIVE=•
NEUTRAL
=4J
SWITCHED
LIVE=0
8
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7
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FROST 0
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/THERMOSTAT
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............................................
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ELECTRICAL
CAUTION: ISOLATE
THE
MAINS
ELECTRICITY SUPPLY
BEFORE
STARTING
ANY
WORK
AND
OBSERVE
ALL
RELEVANT SAFETY PRECAUTIONS
Danger
of
short
circuit:
When
connecting
the
cables
ensure
that
no
cable
pieces
fall
into
the
Heatronic.
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
position by removing the
screw
(X) from the
retaining bracket.
2.
Unscrew the three screws (B) on the back
of
the control panel and pull off the connec-
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 (
-::1:-
l
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
toter-
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
toter-
minal
(LR)
~
Connect
room thermostat NEUTRAL
toter-
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 & SERVICING INSTRUCTIONS
FOR
WORCESTER BOSCH GREENSTAR
25CDI/30CDI/37CDI/42
co;
~ORCESTER
6 720
613
700a
(2006/11)
Bosch Group
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