Heat Detector

The EOL resistor cannot be mounted in the exhaust tunnel; it will not be rated for this environment.

Solution:

1. Mount a junction box outside of the turbine enclosure with a 4 double row terminal barrier strip inside.

2. Run a pair of wires from the detection circuit in the control panel to this box; terminate on terminals 1 and 2.

3. Run a pair of armored, braided temperature rated conductors (exhaust tunnel will be 450-550 F during operation) from terminals 1 and 2 "out" to the detector (must be a 4 wire device, explosion proof, rated 600 degree F).

4. Run another pair of high temperature conductors from detector (other two wires on detector) back to junction box and terminate on terminals 3 and 4.

5. Mount EOL resistor on opposing terminals 3 and 4.

If this is not what the vendor recommended, get another vendor.

Also, if this detector is tripping a suppression system (exhaust tunnels have bearing oil which can create a very intense fire) use two detectors and wire with logic such that both must be in alarm at the same time to discharge suppression agent (make terminal strip in box above 8 terminal and repeat sequence).