Commissioning; Electrical - Baxi Megaflo 2 System Compact GA Range Installation & Servicing Instructions Manual

Control Box
Fused supply 3A
230V ~ 50Hz
Earth (green/yellow)
Neutral (blue)
Live (brown)
Fig. 33
26
© Baxi Heating UK Ltd 2013
Always fit fast
blow 2A fuse
b
1
230V
2
bk
g/y
b
br
Terminal Block
9.0 Installation
9.7
1. See Section 7.5 for details of the electrical supply. Undo
the securing screws and lift the case front panel off.
2. Disengage the securing tab and hinge the control box
downwards. Undo the terminal block cover securing screw
and remove the cover (Fig. 32).
3. Slacken the gland nut in the left of the boiler lower panel
and pass the mains cable through it. Remove the grommet
adjacent to the gland nut, pierce the diaphragm and insert
the cable from the external control system.
4. Leave sufficient slack in the cables to allow the Control
Box to be hinged fully open. Tighten the gland nut and refit
the grommet.
5. Connect the Earth, Permanent Live and Neutral wires to
the terminal strip.
Fig. 32 NOTE: Both the Permanent Live and Neutral
connections are fused.
6. Refer to the instructions supplied with the external
control(s).
IMPORTANT: The room thermostat MUST be suitable
for 230V switching.
7. Remove the link between terminals 1 & 2. The switched
output from the external control must be connected to
terminal 1. (Fig. 33).
8. Replace the terminal block cover.
9.8
1. Prior to commissioning the boiler preliminary electrical
system checks should be carried out.
Fuses
2. These should be performed using a suitable meter, and
include checks for Earth Continuity,
Resistance to Earth, Short Circuit and Polarity.
Making The Electrical Connections
Preliminary Electrical Checks