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INSTALLATION - 45CM1 PHOTOCELL MOUNT
Test for Incandescent Refractory Hold-ln with Photocell Detector
Type 45CM1 Photocell Scanners are actuated by light energy. To assure that the flame failure
response time is not extended by radiation from incandescent refractory, the following test is recom-
mended:
1.
Operate the burner, following the burner manufacturer’s instructions, until the refractory is at
maximum operating temperature.
2.
Turn off the main fuel supply manually.
3.
Observe the display flame signal which must drop below 10 within 4 seconds.
4.
If the flame failure response time exceed 4 seconds, reduce the amount of light at the Photocell
with a screen, an orifice, or a filter lens, until the normal flame failure response is obtained.
INSTALLATION - 69NDl FLAME ROD
The 69NDl flame rod proves a gas pilot flame and/or main gas flame. It is a spark plug type unit con-
sisting of 1/2” NPT mount, a KANTHAL flame rod, a glazed porcelain insulating rod holder and a
spark plug connector for making electrical connections. The 69ND1 is available in 12,” 18” or 24”
lengths.
The flame rod may be located to monitor only the gas pilot flame or both the gas pilot and main gas
flames. It is mounted on a 1/2’’ NPT coupling.
The following instructions should be observed:
1.
Keep flame rod as short as possible.
2.
Keep flame rod at least 1/2’’ from any refractory.
3.
Flame rod should enter the pilot flame from the side so as to safely prove an adequate pilot flame
under all draft conditions.
4.
If the flame is nonluminous (air and gas mixed before burning), the electrode tip should extend
at least 1/2” into the flame, but not more than halfway through.
BLAST TUBE
SHELL COMBUSTION HEAD
BLAST TUBE
SCANER TYPE 45CM1
(C0VER ON)
SCANER TYPE 45CM1
(C0VER REMOVED)
WRONG POSITION
OF ROD
INADEQUATE FLAME
PILOT BURNER
CORRECT POSITION
OF PILOT FLAME
CORRECT
POSITION
OF ROD
