Electrical Connection; Electrical Details - Nuaire Group MRXBOX95B-LOFT Installation And Maintenance Manual

Installation and Maintenance

4.0 Electrical Connection

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.
Figure 5a. Power supply PCB.
230V in, 24V dc out.
Internal
wiring to
Bypass
Damper
2 Way
Terminal
Block
Earth point
Bypass
SWL
(Grey)
Note: Wiring is for reference purposes only as the
connections above are factory fitted.
The unit is pre-wired with a 2 metre fly lead.
Unit serving kitchen and bathroom
Figure 6.
MAINS
230V
50Hz
Unit serving kitchen and two bathrooms
Figure 7.
MAINS
230V
50Hz
MRXBOX95B-LOFT Mechanical Ventilation with Heat Recovery & Summer Bypass
Internal wiring
230V IN
50Hz
Mains
Connection to supply cord
N
L
Fuse 2A
Light
switch
(Double
Pole)
Kitchen switch
N
L
Fuse 2A
Light
switches
(Double
Pole)
Kitchen switch
Please note: the electrical connection of the unit must be be carried
out by a qualified electrician.
The unit is supplied with a flexible cord for connection to the mains
supply.

Electrical details:-

Voltage: 240V 1ph 50Hz
Consumption: 75W (max) 0.6 amps
Fuse rating: 3 Amp
NOTE This unit must be earthed
The three core 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.
Connections for
optional controls
Volt free relay Fault
contacts.
Run
Switch to deactivate
continuous trickle
Fan connections
Room
light
3 Pole
isolator
Room
lights
3 Pole
isolator
4
Green/yellow
Blue
Brown
Black
Summer Grey (only used
bypass on bypass unit)
switch
Green/yellow
Blue
Brown
Black
Summer Grey (only used
bypass on bypass unit)
switch
Leaflet Number 671453 January 2011
Figure 5b.
Control PCB.
24V
Supply cord
from unit
Supply cord
from unit