NuAire MRXBOX-VSC Installation & Operating Instructions Manual

MRXBOX-VSC is a user control from the
Ecosmart range.
They have a 3.5in 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.
MRXBOX-VSC– the unit is all plastic
construction and supplied with 10m of
pre-plugged connection cable and surface
mounting back box.
The units are SELV (12V d.c.) with the power
supplied from the fan unit via the pre-plugged
cable.
1.0 Installation
INSTALLED ENVIRONMENT
o
0-40 C and up to 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 Figs. 1 - 5).
If semi-recess (final projection from wall is
7mm approx) is needed, a proprietary 2-gang
back box (25mm deep min.) 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.
a) Fix one end of the 10m cable to the fan's
Ecosmart connection point and route the
cable to the mounting position.
b) Unclip the front bezel from the unit and
remove the 2 retaining screws, then remove
the working section from the back box. (see
Fig. 2).
MRXBOX VSC
Visual System User Control
Installation & Operating Instructions
c) 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 fixing
points and insert the wall plugs.
Fix the back box on to the wall. (see Fig 3).
d) Plug the data cable into the socket.
(see Fig. 4).
e) 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 and middle section). (see Fig. 5).
2.0 Data Cable Installation
A 4-core SELV data cable is used to connect
the control to the fan.
Do not run data cable in the same conduit
as the mains cables and ensure there is a
50mm separation between the data cable
and other cables.
For cable lengths in excess of 10m a
MRXBOX-JB will be required to provide
sufficient power. Keep the number of cable
joints to a minimum to ensure the best data
transmission efficiency between devices.
Due to the higher current consumed by the
MRXBOX-VSC, the max cable run between
the fan control and the MRXBOX-VSC must
be limited to 50m.
Nuaire Limited Western Industrial Estate Caerphilly United Kingdom CF83 1NA
T: 029 2085 8400 F: 029 2085 8444 E: info@nuaire.co.uk W: www.nuaire.co.uk
1
The EMC Directive
2004/108/EC
The Low Voltage
directive
2006/95/EC
Figure 1.
To fan connector
10m sensor connection
box terminal
wire (supplied).
marked NET
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 2.
Remove the bezel and 2 screws to detach front
of unit from
back box.
Bezel
Front of unit.
Figure 3.
Feed cable
through hole
in back box.
Fix back box
to wall using
screws.
Figure 4.
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 5.
Bezel
TOP
Front of unit
09. 03. 16. Leaflet Number 671703
Wall
Back box.
Back box.