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13
4.7
ELECTRICAL CONNECTIONS
The boiler is supplied with a 2-metre fly-lead. This
lead can be used for connection to the electrical
supply. Connect the fly-lead to a fused plug or
fused isolator in the following way:
●
brown wire to LIVE supply
●
blue wire to NEUTRAL supply
●
green/yellow to EARTH connection.
Insert the supplied 3-AMP fuse into the fused
isolator or fused plug.
Should the fly-lead be unsuitable, refer to 4.7.3
for details on how to connect the electrical supply
directly to the boiler.
The electrical supply must be as specified in
section 3/3A. A qualified electrician should con-
nect the appliance to the electrical supply. If
controls - external to the appliance - are required,
a competent person must undertake the design
of any external electrical circuits, please refer to
section 8 for detailed instructions. ANY EXTER-
NAL CONTROL OR WIRING MUST BE SERVED
FROM THE SAME ISOLATOR AS THAT OF
THE APPLIANCE. The supply cable from the
isolator to the appliance must be 3-core flexible
sized 0.75mm to BS 6500 or equivalent. Wiring to
the appliance must be rated for operation in
contact with surfaces up to 90 ºC.
4.7.1
CASING REMOVAL
To gain internal access to the appliance you must first
remove the casing, proceed as outlined below:
●
locate and unscrew the 3-screws (A) that se-
cure the outer casing to the appliance (see fig.
11)
●
lift the casing upward to disengage it from the
top locating hooks and then remove
●
store the casing and screws safely until re-
quired. Re-fit in the reverse order
●
gently lower the control fascia until it rests.
4.7.2
APPLIANCE TERMINAL BLOCK
The appliance terminal block is located on the
left side of the control fascia (see fig. 11). Locate
and remove the screw that secures the terminal
block cover.
NOTE
The appliance comes with a factory fitted clock
to allow basic operation of the boiler. If it is antici-
pated that additional controls - such as a room
thermostat - will be required please refer to the
wiring diagrams in section 8 for more detailed
information.
4.7.3
CONNECTING THE MAINS (230V) INPUT (see
fig. 12)
Lift the terminal block cover as described in 4.7.2.
Pass the cable through the cable anchorage point.
At the terminal block on the extreme left, there
are 3 terminals from left to right they are:
LIVE - NEUTRAL - EARTH
Connect the supply cable wires (LIVE, NEUTRAL
& EARTH) to their corresponding terminals on the
appliance terminal block (see fig. 13). Ensure that
the EARTH wire is left slightly longer than the
others, this will prevent strain on the EARTH wire
should the cable become taut.
The securing screw on the cable anchorage
should now be tightened. This must be done
before the control fascia is re-fitted in the upright
position. The appliance casing and screws can
now be re-fitted.
Control panel screws and casing screws
Fig. 11
A
Fig. 12
Fig. 13
