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Installation Manual
4.0 ELECTRICAL INSTALLATION
For good EMC engineering practice, any sensor cables or switched
live cables should not be placed within 50mm of other cables or on
the same metal cable tray as other cables.
The electrical connection of the unit must be carried out by a
qualified electrician.
The unit is supplied with a flexible cord for connection to the mains
supply.
4.1 Electrical Information
Electrical details:
Voltage: 240V 1ph 50Hz
Consumption: 1.2 Amp
This unit must be earthed.
The cable from the mains power supply should be connected to a
fixed wiring installation, via a fused isolator, in accordance with
current IEE wiring regulations.
Wiring is for reference purposes only as the connections in Figure
14 are factory fitted. The unit is pre-wired with a 2 metre fly lead.
4.2 Wiring Diagrams
4.2.1 Unit Serving Kitchen & Bathroom
Disconnection from the
supply mains must be
incorporated within the
fixed wiring in accordance
with the wiring
regulations and shall
have a minimum contact
separation of 3mm.
4.2.2 Unit Serving Kitchen & 2 Bathrooms
Disconnection from the
supply mains must be
incorporated within the
fixed wiring in accordance
with the wiring
regulations and shall
have a minimum contact
separation of 3mm.
4.2.3 Summer / Winter Switch
Optional Controls -
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
15
Wiring Diagram - Kitchen & Bathroom
MAINS
230V
N
50Hz
L
3A Fuse
(BS 1362)
Light
Switch
(Double
Pole)
Kitchen Switch
16
Wiring Diagram - Kitchen & Bathroom
MAINS
230V
N
50Hz
L
3A Fuse
(BS 1362)
Light
Switches
(Double
Pole)
Kitchen Switch
17
Summer / Winter Switch
Volt free Summer / Winter Switch (supplied with unit)
Polarity is inconsequential
Warning! - Do not connect to mains!
For further information regarding optional controls, contact Nuaire on 02920 858 400.
MRXBOXAB-ECO2B-AE(H)SW
14
PCB Details
SPEED 1
SPEED 2
Green / Yellow
Blue
Brown
Room
Black
Light
3 Pole
Grey
Isolator
Green / Yellow
Blue
Brown
Room
Black
Lights
3 Pole
Grey
Isolator
Red
Black
17. 11. 21. Document Number 672002
SPEED 3
Supply Cord
From Unit
Optional 3 Speed Switch
Supply Cord
From Unit
Optional 3 Speed Switch
2 core cable
from unit
7
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