ABB Nexus RF Installation Manual Download Page 2

Installation instructions
1.  Note: The circuit supplying mains power to the fitting must not be energised until installation of 

the fitting is completed.

2. 

Mark and cutout a hole in the ceiling to suit either small or large Spitfire head. The cut-out size for 
the standard lamp head is 50mm. The cut-out size for a small 85mm adaptor plate is 70mm and for 
the large 141mm adaptor plate is 130mm. 

Note: The adaptor plates are mainly used for existing 

Spitfire replacement or where access is limited.

3. 

Snap the lamp head to the appropriate adaptor plate (if used).

4. 

Connect battery pack and lamp head to the control pack. The battery pack can be attached to the 
control pack using cable tie supplied. Secure the battery pack and lamp head wires to the control 
pack using cable tie.

5. 

Connect data cable to the control pack.

6. 

Feed the battery and control pack assembly through the ceiling cut-out and secure them to a 
suitable location within the ceiling space. If access to the ceiling cavity is not available, connect the 
mains power cord before recessing the battery and control pack in the ceiling cut-out. Secure the 
battey and control pack to a suitable location within the ceiling space.

7. 

Refer to data connections section.

8. 

Connect flex and plug to the supply socket.

9. 

Check operation of the fitting to ensure that the installation was successful. Once powered up, as 
a non-maintained fitting the present lamp stays off. Allow a few minutes to give the battery a small 
charge, then press the test button located at the Spitfire lamp head. Hold the test button in for a  
few seconds and observe the operation of the lamp switching from mains to the emergency mode. 
If the lamp on emergency mode works momentarily, that’s okay. Try again in a few more minutes in 
case battery is completely discharged, it may take a little time to charge up enough to operate 
even momentarily. After this time, press the test button again and if the lamp does not work at all, 
check the supply, the connections and follow the instruction given in the troubleshooting guide at 
the end of this document. Operation modes of the LED status should be as follows.

10. 

Once manually checked, it is ready for the commissioning into the Nexus network. Keep the 

information details of this fitting including exact location description, DB (distribution board) and 
CB (circuit breaker) numbering, channel and router numbering, plan number and cross referencing 

information as all of this will be required for entry into the database during commissioning. Refer 
to the Nexus user and technical guide for full details. As the installer, it is your responsibility to 
conduct the initial discharge testing of the installed fitting. Refer to AS/NZS 2293. 

Important: 24 hours is required to allow the fitting battery to reach full capacity, ie: prior to a 
discarge test. As the installer, it is your responsibility to conduct the initial discharge testing of the 
installed fitting. Refer to AS/NZS 2293.

Removal instructions
1. 

Before removing the installed fitting, de-
energise and lock off the supply circuit. 

Fitting type

Indicator LED state - on initial powering - no fitting faults

Nexus RF

Green flash with 2 red blinks, green flash with 3 red blinks

Data connections - Nexus RF product range

Nexus RF fitting 

•  Connect the antenna to the control pack.
•  Collect the MAC address, by removing the 

peel off sticker section and locating it on 
your floor plan or spreadsheet.

•  Consult the Nexus user and technical guide 

for further detail, including product 
commissioning.

Testing precautions

Once the fitting is permanently connected to the 
mains supply, a commissioning discharge test as 
required in AS/NZS 2293.2 must be carried out. 
You will need to allow 24 hours for the battery to 
fully charge prior to conducting this test, 

presently (at the time of writing), the standard 

requires that fittings operate in emergency mode 
for a period not less than 2 hours for their 
commissioning test and for not less than 90 
minutes thereafter (it is required that 6 monthly 

discharge tests be carried out). You will need to 

keep the records for the commissioning test and 
enter them into the building emergency services 
logbook or via other recording methods as 
allowed by AS/NZS 2293.2. 

Construction sites

Continuously switching off the mains power 
supply that is connected to emergency light 
fittings during the construction phase of an 
installation will cause these fittings to discharge 
and charge their batteries many times over a 
short period; this can shorten life of the battery. 
ABB does not recommend such practices and 
may not honour the warranty on batteries when 
they are subjected to such harsh operating 
conditions. Emergency light fittings are designed 
to be discharge tested once every 6 months as 
per AS/NZS 2293.2, subjecting the product to 
repeated discharge or charge cycles is regarded 
as an abuse of the fittings.

2. 

Unplug the power cord from the mains 
socket.

3. 

Disconnect the battery and lamp head plug.

Power cable

Main control unit

Figure 1: Product installed in ceiling

Figure 2: Connection and 
cable tie location

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