version 4.7.2 ā July 10th, 2022 Firmware version V2.1.7 and higher
EXXFIRE Installation and Service Manual 63
4.5.5 Install wiring for Manual Activation Button input
Figure 51 Wiring for Manual Activation input
One contact is provided to connect a Manual Activation Button (MAB), typically using a screened,
fire-resistant, two core cable.
The type of MAB to be used is a conventional type of MAB with a normally open contact in series
with a 470 Ohm resistor, e.g. the DM1103-L Code A5Q00017630 (see Figure 52).
The cable to the MAB must be terminated with a 1k Ohm resistor at the MAB side of the cable.
Choose the most appropriate cable gland for the MAB contact to be used.
Strip an appropriate amount of the outer sheath away and strip the conductors before inserting into
the cable gland. Ensure that the gland seals tightly against the outer sheathing, providing both
physical support for the cable, and an airtight seal. Failure to do this will result in increased fault
indications since the sampled air flow rate will be less stable.
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