version 4.7.2 – July 10th, 2022 Firmware version V2.1.7 and higher
EXXFIRE Installation and Service Manual 62
Before powering up the unit, perform a continuity test along the cable to ensure the correct
connection has been made. Note – the (Normally Closed) Fault relay will be CLOSED while the
unit is powered off. This relay will only be activated to the open state once the unit is powered
and fully operational without any faults. All other relays will remain in their dormant state until
activated by a fire event.
If any cable glands remain unused, they must be fitted with the blanking plugs provided. Failure
to do this will result in increased fault indications since the sampled air flow rate will be less
stable.
Once all connections have been made, the rear cover must be refitted, with all screws to
provide a good seal against air leakage, light leakage, and EMC. NB: Please take care that the
earth cable to the cover panel does not get stuck in between the cover panel and the system,
since this will cause air leakage.
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