Connect The Mains Supply - Baxi LUNA HT 1.450 Installation And Servicing Instructions

WARNING
The external control MUST be suitable for 120V or a 24V relay card must be installed. The 24V relay card is an
optional accessory and does not come with the boiler.
To connect the external control wires proceed as follows:
1. Remove the screws securing the facia panel and hinge it down
2. Remove the control box cover securing screws. Disengage the barbs on the control box from the cover. Remove the
cover A .
3. Slacken the cable clamp on the LH side of the boiler chassis B . Insert the cable through the clamp and route it to the
terminal block.
4. Slacken the screws in the terminal block, connect the input cable, and tighten the screws.
5. If an external control is to be connected it can be done at this point. Run the input cable from the external control
through the second cable clamp on the boiler chassis. Refer to the instructions supplied with the control.
6. Remove the link between terminal 1 and 2 and connect the cables from the external control C .
7. Ensure that both supply input and, where fitted, external control input cables have sufficient slack to allow the control
box to drop down. Tighten the cable clamp(s) on the boiler chassis.
C
Key to Wiring
b - blue
br - brown
bk - black
y - yellow
g/y - yellow/green
INSTALLATION AND SERVICING INSTRUCTIONS

11. CONNECT THE MAINS SUPPLY

A
Control Box Cover
B
Cable Clamp
Fuse
Terminal Block
Frost
Thermostat
Room
Thermostat
29
Fig. 21
Facia Panel
External Clock
7110242.02 - en