CleaverBrooks CB120Z, Операция

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44 750-271
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:
1.
Position the UV1A, UV2 scanner within 30 inches of the flame to be monitored; the 45UV5
within 72 inches, closer if possible.
2. Select a scanner location that will remain within the ambient temperature limits of the UV Scan-
ner. If cooling is required, use an insulating coupling (Fireye #35-69 for UV1A, UV2 Scanners,
#35-127-1 for 45UV5) to reduce conducted heat.
3.
The UVlA, UV2, 45UV5 Scanners are designed to seal off the sight pipe up to 1 PSI pressure.
Higher furnace pressures should be sealed off. To seal off positive furnace pressure up to 100
PSI for UV1A, UV2 Scanners, install a quartz window coupling (#60-1257) For 45UV5 Scan-
ners, use #60-1100 coupling. Add cooling air to reduce the scanner sight pipe temperature.
4.
Install the scanner on a standard NPT pipe (UV1A: 1/2", UV2: 3/8", 45UV5: 1") whose position
is rigidly fixed. If the scanner mounting pipe sights through the refractory, do not extend it more
than halfway through. Swivel flanges are available if desired (#60-302 for UV1A, UV2 Scan-
ners, #60-1664-3 for 45UV5). The sight pipe must permit an unobstructed view of the pilot and/
or main flame, and both pilot and main flames must completely cover the scanner field of view
.
5.
Smoke or unburned combustion gases absorb ultraviolet energy. On installations with negative
pressure combustion chambers, a small hole drilled in the UV1A, UV2 sight pipe will assist in
CAUTION: The UV1A, UV2, UV8A, UV90 and 45UV3 flame scanners and associated
amplifier module are non-self checking UV systems and should be applied only to burners
that cycle often (e.g.: a minimum of once per 12 hours) in order for the safety checking cir-
cuit to be exercised. If component checking is required during burner operation for con-
stantly fired burners, utilize the self-checking ultra-violet flame scanners (45UV5, 55UV5)
with associated amplifier module (833-3727), or the infrared flame scanner (48PT2) with
associated Auto Check amplifier (833-3728) activated.
SCANNER MUST HAVE UNOBSTRUCTED
VIEW OF FLAME
NOT THIS NOT THIS BUT THIS
FLAME MUST COMPLETELY COVER
SIGHT OPENING
NOT THIS NOT THIS BUT THIS