IN
S
TA
LL
AT
IO
N
INSTALLATION & SERVICING INSTRUCTIONS FOR WORCESTER BOSCH
25
ELECTRICS
ELECTRICS
8-716-109-711a (04.05)
DANGER - 230v:
ISOLATE THE MAINS ELECTRICITY
SUPPLY BEFORE STARTING ANY
WORK AND OBSERVE ALL
RELEVANT SAFETY PRECAUTIONS.
Access to 230v connections:
1 Pull control knob (D) forwards to remove from
control panel (A)
2 Release screws (B) and remove cover panel (C)
from control box (A)
3 Release screw (E) from cable clamp (F)
Pull inner clamp part (G) outwards
Feed sufficient power cable (H) through the
cable clamp (F) and secure grip with screw (E)
Separate wires from cable end and strip to
6mm
230v connections:
4 Connect
LIVE
wire (Brown or Red) to terminal
(
L
)
Connect
NEUTRAL
wire (Blue or Black) to
terminal (
N
)
Connect
EARTH
wire (Green/Yellow) to the
connector (
E
)
5 Secure the cable to the cable clamp (K).
Route the power cable to the connection point
avoiding any potentially hot surfaces.
Allow sufficient cable for the control panel (A) to
be pulled forward for servicing.
Any external device connected to the boiler
must take its power supply from the boiler
only and must NOT have a separate supply.
See the following pages of electrical diagrams
for details of different systems.
Refit electric control panel covers:
Refit cover panel (C) and secure with screws
(B)
Refit control knob (D)
E
= EARTH
L
= LIVE
N
= NEUTRAL
S
= SWITCHED LIVE
G
C
A
B
2
H
E
F
3
230v
4
1 2 3
D
E
5
1
230v