NuAire MRXBOX95-RFI Instruction Manual

1
09. 02. 22. Document Number 671444
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOX95-RFI
Remote Fail Indicator
Installation and Maintenance
1.0 INTRODUCTION
Refer to the installation instructions of the fan to check the
compatibility of this indicator.
Designed to be compatible with the Ecosmart system, this indicator
unit is supplied with a plugged 10m length of communication cable.
Longer lengths are available if required.
The unit operates with Safe Extra Low Voltage (SELV) with power
supplied by the fan unit via the communication cable.
When a fan failure occurs a red LED will show at the RFI.
A warning sounder will be heard for at least 10 seconds. Then one
second every minute until the fault is cleared.
To disable the sounder, open the unit and move the switch towards the
centre of the PCB.
1.1 Parts List
•MRXBOX95-RFI Remote Fail Indicator
•1 off 10 metre length of plugged SELV cable
1.2 Operating Conditions
Temperature: 0 – 40°C
Humidity: 10 - 90% RH non-condensing
2.0 INSTALLATION
2.1 Installing the Indicator
The unit must be installed away from any direct source of heat (e.g.
radiators) and areas where it would be subjected to steam or water
spray.
The mounting surface must be vibration free.
The unit is supplied complete with 10 metres of connecting cable with
plugs attached.
Fasteners for wall fixing are included in the package.
•Fix one end of the supplied 10m sensor connection cable to the
fans customer connection box (connection sockets marked NET).
•Select a suitable location for the sensor and arrange the cable
in position. Wire can be located behind a wall panel or fixed to
wall surface. Clearance aperture for wire should be approx 20mm
diameter to allow passage of plug end. Allow approximately 75mm
of the cable free at the mounting point to ease the connection of
the plug (Figure 1).
•Hold the base of the unit with one hand and the top half with the
other. Twist the upper half anti-clockwise to open the unit (Figure
2).
•Feed the cable through the hole of the lower half of the unit and
mark the locations of the fixing holes on the wall. There is a raised
line inside the base of the unit to aid alignment to the horizontal or
vertical (Figure 3).
•Fix the base of the unit to the wall using the fasteners provided, or
other suitable fasteners.
•Plug the cable into the socket of the PCB (Figure 4).
•Align the slots of the upper and lower halves of the unit and twist
the upper half clockwise to lock the 2 halves together (Figure 5).
10m sensor
connection
cable Wall
1 Cable Installation
2 Opening Unit
Fixing
Holes
3 Wall Mounting
Sensor
Lower
Half
Sensor
Upper
Half
4 Connecting Cable
5 Closing Unit
2.2 Data Cable Installation
Do not run the SELV data cable in the same conduit as the mains cables
and ensure there is a 50mm separation between the data cable and the
other cables.
The maximum cable run between the fan and indicator is 300metres
when it is installed in accordance with the above instructions.

2
09. 02. 22. Document Number 671444
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOX95-RFI
Installation Manual
3.0 MAINTENANCE
The unit does not require any routine maintenance. However, for
optimum performance, it is advisable to remove any accumulated dust
with a low power vacuum cleaner.
4.0 WARRANTY
The 3 year warranty starts from the date of delivery and includes
parts and labour for the first year. The remaining two years covers
replacement parts only. The labour element is subject to full, free
and safe access to the equipment as recommended by the CDM
regulations. This warranty is void if the equipment is modified without
authorisation, is incorrectly applied, misused, disassembled, or not
installed, commissioned and maintained in accordance with the details
contained in this manual and general good practice.
The product warranty applies to the UK mainland and in accordance
with Clause 14 of our Conditions of Sale. Customers purchasing from
outside of the UK should contact Nuaire International Sales office for
further details.
5.0 AFTER SALES
For technical assistance or further product information, including spare
parts and replacement components, please contact the After Sales
Department.
Telephone [phone]
[e-mail]
Technical or commercial considerations may, from time to time,
make it necessary to alter the design, performance and dimensions
of equipment and the right is reserved to make such changes without
prior notice.

3
09. 02. 22. Document Number 671444
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOX95-RFI
Installation Manual
NOTES

4
09. 02. 22. Document Number 671444
Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk
MRXBOX95-RFI
Installation Manual
NOTES