NuAire ES-AVI2 Installation And Maintenance Download Page 1

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09. 02. 22. Document Number  671418

Nuaire | Western Industrial Estate | Caerphilly | CF83 1NA | nuaire.co.uk

ES-AVI2

Audio Visual 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 AVI2.

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

ES-AVI2 Audio Visual 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

Cable Installation

Opening Unit

Fixing 
Holes

Wall Mounting

 

Sensor 
Lower 
Half

Sensor 

Upper 

Half

Connecting Cable

 

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.

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