Flame being monitored must completely cover the scanner field of view.
To avoid nuisance shutdowns, it is important to avoid sighting hot refractory and to keep scanner
temperature low (below 125 F) (50C).
When the proper position has been established, drill a hole through the furnace wall and install a
4" to 8" length of threaded 1/2"black iron pipe on which to mount the 48PT2 scanner.
When satisfactory sighting position has been confirmed by operating tests, the sight tube should
be firmly welded in place.
Attach the cable supplied with the scanner to a junction box. Splice the cable wires to a pair of wires not
smaller than #18. Install the complete run in a separate conduit to the control. Continuous conduit
bonding between scanner and the control is mandatory! Scanner may be located up to 100 feet from
control. Do not pass scanner wiring through any junction box containing other wires. Do not run other
wires through scanner conduit. Asbestos insulated wire should be avoided.
Keeping the Scanner Cool
The Infrared Scanner (Temperature Limit 125 F) should never get too hot to grasp comfortably in the
hand. Keep the scanner cool by one or more of the following methods.
Use 6" to 8" length of pipe between scanner and hot furnace front plate.
Use insulating tube (Part No. 35-69) on the end of the iron pipe.
Force air into sighting tube. Use Fireye Sealing Union (Part No. 60-801).
Make sure sighting tube does not extend more than halfway into refractory wall.
INSTALLATION - 45CM1 PHOTOCELL MOUNT
The 45CM1 photocell mount with #922 photocell and Rajah stud terminal, is designed for use in the blast
tube on conventional atomizing oil burners. Two typical applications are shown below.
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