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10.0 Installation
© Baxi Heating UK Ltd 2013
10.7 Making The Electrical Connections
The boiler is fitted with a 1.3m length of 3 core of cable.
This can be connected to the fused 3A 230V 50H
Z supply.
NOTE: Both the Live and Neutral connections are fused.
To connect an external control proceed as follows:-
1. Slacken the facia panel securing screws and lift the
outercase panel so that its securing tabs are clear of the
facia. Remove the panel.
2. Completely undo the screws securing the facia panel and
hinge it down (Fig. 45).
3. Undo the terminal block cover securing screw and
remove the cover (Fig. 45).
4. Slacken the unused cable clamp on the LH side of the
boiler chassis (Fig. 46). Insert the external control wiring
through the clamp and route it to the terminal block.
5. Refer to the instructions supplied with the control.
IMPORTANT: The external control MUST be suitable
for 230V switching and fused 3A maximum.
6. Remove the link between terminals 1 & 2. The switched
output from the external control must be connected to
terminal 1. (Fig. 47).
7. Ensure that the external control input cable(s) have
sufficient slack to allow the control box to drop down.
Tighten the cable clamp on the boiler chassis.
8. Replace the terminal block cover, routing the external
control input cable(s) through the second cut-out.
10.8 Preliminary Electrical Checks
1. Prior to commissioning the boiler preliminary electrical
system checks should be carried out.
2. These should be performed using a suitable meter, and
include checks for Earth Continuity,
Resistance to Earth, Short Circuit and Polarity.
Always fit fast
blow 2A fuse
Fused supply 3A
230V ~ 50Hz
Neutral (blue)
Earth (green/yellow)
Live (brown)
1
2
230V
br
b
g/
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