Electrical Connections; Electrical Connections Of The Appliance; Connecting External Devices; Filling The Installation - Baxi EcoBlue System 12 Installation And Service Manual

6 Installation
Control Box
Fused supply 3A
230V ~ 50Hz
Earth (green/yellow)
Neutral (blue)
Live (brown)
Fig. 35
Locating Lug
Case Front
Panel
Case Front Panel
Securing Screws
42 EcoBlue System
Terminal M1
230V
Always fit fast
blow 2A fuse
1
230V
2
Terminal Block
Terminal M1
230V
6.5

Electrical Connections

6.5.1

Electrical Connections of the appliance

1. See Section 5.2.2. for details of the electrical supply. Undo the
securing screws and lift the case front panel off.
2. Hinge the control box downwards. Disengage the securing tabs
and open the terminal block cover. (Fig. 34).
3. If the mains cable fitted is not long enough slacken the gland
nut in the right of the boiler lower panel and pass the new mains
Fig. 34
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
and gland nut.
b
bk
5. Connect the Earth, Permanent Live and Neutral wires to the
terminal strip.
g/y
Both the Permanent Live and Neutral connections are
b
fused.
br
6. Refer to the instructions supplied with the external control(s).
Any thermostat must be suitable for 230V switching.
Fuses
7. Remove the link between connections 1 & 2. The 230V supply
at connection 2 must be connected to the thermostat. The
switched output from the thermostat must be connected to
connection 1. (Figs. 35 & 36).
8. Replace the terminal block cover.
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. For the Frost Stat to operate the boiler MUST BE
IN CENTRAL HEATING MODE i.e.
9. Engage the front panel onto the locating lugs on top of the
case & secure with the securing screws at the bottom of the case.
6.5.2

Connecting External Devices

1. See Section 6.7.2 for details of fitting the optional
outdoor sensor accessory.
6.6

Filling the Installation

1. See Section 5.2.6 and 5.6.1 for details of flushing and
filling the installation.
symbol shown.
7219708 - 01 (04/15)