Flame Scanners; Installation - Uv Scanners - Fireye BurnerPRO BP110 Series Manual

FLAME SCANNERS

INSTALLATION - UV SCANNERS

Where possible, obtain the burner manufacturer's instructions for mounting the scanner. This infor-
mation is available for most standard burners. The scanner mounting should comply with the follow-
ing general instructions:
Position the UV1AL or UV90L scanner within 39 inches (1 meter) of the flame to be monitored.
1.
Select a scanner location that remains within the ambient temperature limits of the UV Scanner.
2.
The UVlAL Scanner is designed to seal off the sight pipe up to 1 PSI pressure. Higher furnace
3.
pressures must be sealed off. To seal off positive furnace pressure up to 50 PSI for the UV1AL
Scanner, install a quartz window coupling (#60-1257). Add cooling air to reduce the scanner
sight pipe temperature.
Install the scanner on a standard NPT pipe (UV1AL: 1/2") whose position is rigidly fixed. If the
4.
scanner mounting pipe sights through the refractory, do not extend it more than halfway through.
Swivel flanges are available if desired (#60-302 for UV1AL) Scanner. The sight pipe must per-
mit an unobstructed view of the pilot and/or main flame, and both pilot and main flames must
completely cover the scanner field of view.
SCANNER MUST HAVE UNOBSTRUCTED
NOT THIS
Smoke or unburned combustion gases absorb ultra-violet energy. On installations with negative
5.
pressure combustion chambers, a small hole drilled in the UV1AL sight pipe assists in keeping
the pipe clean and free from smoke. For positive pressure furnaces, provide clean air to pressur-
ize the sight pipe, if necessary.
Two UV1AL Scanners may be installed on the burner if it is necessary to view two areas to
6.
obtain reliable detection of the flame. They must be wired in parallel.
To increase scanner sensitivity with UV1AL Scanner, a quartz lens permits location of the scan-
7.
ner at twice the normal distance. Use l/2" x 1 l/2" pipe nipple between UV1AL Scanner and the
coupling.
Request the assistance of any Fireye field office for recommendations of a proper scanner instal-
8.
lation on a non-standard application.
UV1AL
VIEW OF FLAME
NOT THIS BUT THIS
UV90L
FLAME MUST COMPLETELY COVER
SIGHT OPENING
NOT THIS
®
NOT THIS BUT THIS
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