3
02. 07. 15. Leaflet Number 671437
Installation and Maintenance
MRXBOX95-WALL Mechanical Ventilation with Heat Recovery
Fuse 2A
Unit serving Kitchen and Bathroom
MAINS
230V
50Hz
Room
light
Light
switch
(Double
Pole)
N
L
SL
N
L
Fan
Unit
3 Pole
isolator
Kitchen switch
Unit serving Kitchen and two Bathrooms
Fuse 2A
MAINS
230V
50Hz
Room
lights
Light
switches
(Double
Pole)
N
L
SL
N
L
Fan
Unit
3 Pole
isolator
Kitchen switch
Figure 8.
Figure 9.
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.
4.0 Electrical Connection
Please note: the electrical connection of the unit must be be carried
out by a qualified electrician.
Electrical details:-
Voltage:
240V 1ph 50Hz
Consumption:
75W (max) 0.6 amps
Fuse rating:
3 Amp
NOTE This unit must be earthed
SL
N
L
Connections for
optional controls
Volt free relay
contacts I
Run
Fan connections
230V IN
50Hz
Mains
Earth point
Fault
Internal wiring
Figure 7a. Power supply PCB.
230V in, 24V dc out.
Figure 7b.
Control PCB. 24V
