0 installation – Baxi Potterton Gold HE A Range User Manual

Page 33

10.0 Installation

Fig. 59

Fig. 58

Cable Clamp

Facia Panel

Terminal Block Cover

10.8

Making The Electrical Connections

The boiler is fitted with a 1.3m length of 3 core cable. This

can be connected to the fused 3A 230V 50H

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. 58).

3. Undo the terminal block cover securing screw and

remove the cover (Fig. 58).

4. Slacken the unused cable clamp on the LH side of the

boiler chassis (Fig. 59). 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 room thermostat MUST be suitable

for 230V switching.

NOTE: An external frost thermostat cannot be used

with the optional integral timer.

6. Remove the link between terminals 1 & 2. The 230V

supply at terminal 2 must be connected to the thermostat.

The switched output from the thermostat must be

connected to terminal 1 (Figs. 60 & 61). If the room

thermostat being used incorporates an anticipator it MUST

be wired as shown in Figs. 60 & 61.

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.

10.9

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.

g/y

Room ‘Stat

Fused Spur

230V

Fig. 60

g/y

Frost

Thermostat

External Clock

Room ‘Stat

Fused Spur

230V

NOTE: The 230V switched signal for external controls
(Frost Stat - Room Stat - Timer) must always be taken
from terminal 2 at the boiler. Live, Neutral and Earth to
power these controls must be taken from the Fused Spur.

Fig. 61