NuAire MRXBOX-VSC Installation And Maintenance Manual

1.0 INTRODUCTION
The MRXBOX-VSC is a user control from the Ecosmart range.
These wall mounted user controls include a 3.5'' colour LCD
touchscreen display to provide improved user interface. The unit can
be surface or semi-recessed mounted and is compatible with standard
2-gang recess back box. The control is manufactured from an all plastic
construction and supplied with 10m of pre-plugged connection cable
and surface mounting back box.
Units are SELV (12 Vdc) with the power supplied from the fan unit via
the pre-plugged cable.
2.0 DIMENSIONS
Figure 1. Unit Dimensions
E = Screen
width
B
A
Dimensions A
MRXBOX-VSC 145 85
3.0 INSTALLATION
IMPORTANT
INSTALLED ENVIRONMENT:
0-40°C and <90% RH (non-condensing)
Caution: The unit must be installed away from any direct source of
heat (e.g. radiators) and not in areas where it would be subjected to
steam or water spray.
The mounting surface must be free from vibration.
The unit is supplied with back box suitable for surface mounting (see
Figure 2 - Figure 6).
If semi-recess (final projection from wall is approximately 7mm) is
needed, a proprietary 2-gang back box (25mm deep minimum) may be
used.
Always physically check the suitability of the back box before fitting.
In some instances, the earthing point of the back box may foul the unit
and need to be removed.
1. Fix one end of the 10m cable to the fan's Ecosmart connection point
and route the cable to the mounting position.
nuaire.co.uk 029 2085 8400
MRXBOX-VSC
Visual System User Control
Installation and Maintenance
C = Surface
mounting
depth
F = Screen
depth
D = Recessed
mounting
depth
B C D E
35 6 73
2. Unclip the front bezel from the unit and remove the 2 retaining
screws, then remove the working section from the back box (see
figure Figure 3).
3. Feed the cable through the knock-out hole in the base of the back
box and mark the fixing point on the wall, drill appropriately sized
holes at the required fixing points and insert the wall plugs. Fix the
back box on to the wall (see figure Figure 4).
4. Plug the data cable into the socket (see figure Figure 5).
5. Fix the unit back into the back box using the screws supplied, then
clip the bezel back on the unit again noting which way is up. (Top
is printed on the inside face of the bezel and middle section) (see
figure Figure 6).
Figure 2.
To fan connector box terminal marked NET
10m sensor connection wire (supplied)
Clearance aperture for wire should be
approx. 20mm dia to allow passage of
plug end. Allow approx 120mm of wire
through for fitting to the backplate.
Wire can be located behind a wall panel
or fixed to wall surface.
Figure 3.
Remove the bezel and
2 screws to detach front
of unit from back box.
F
Figure 4.
57
Figure 5.
Plug end mounted into the PCB socket inside
the front half of the unit. Note that the data
cable socket is positioned at the top corner
of the unit.
Figure 6.
19. 07. 18. Document Number 671703
Bezel
Front of unit
Feed cable
through hole
in back box.
Fix back box
to wall using
screws.
Back box.
Bezel
TOP
Front of unit
The EMC Directive
2014/30/EU
The Low Voltage
Directive
2014/35/EU
Wall
Back box
1