7
FIGURE 5.
SCANNER LOCATION VS. SECONDARY AIR ROTATION
5.
Having determined the approximate location for the sight pipe, cut a clearance hole for a 2 inch
pipe through the burner plate. Look through the hole. If register vanes interfere with the desired
line of sight, the interfering vane(s) should be trimmed to assure an unrestricted viewing path at all
firing levels.
Note: Always check with the burner manufacturer before you trim register vanes.
FIGURE 6.
FLAME MUST COMPLETELY COVER SIGHT OPENING
6.
The preferred method for mounting surface mounted scanners requires the use of a swivel mount,
P/N 60-1664-3 (NPT). Center the swivel mount over the two inch hole in the burner plate and
secure using three hexed cap screws (not provided). Install the sight pipe on the swivel mount. If a
swivel is not used, insert the end of the sight pipe into the hole, align the hole to the desired view-
ing angle and tack weld (welding must be adequate to temporarily support the weight of the
installed scanner). The sight pipe should be arranged to slant downward so that dirt and dust will
not collect inside.
CAUTION: Use no more than one foot of one inch diameter sight pipe. Increase the sight pipe
diameter one inch for every additional foot of sight pipe length used to avoid restricting the
scanner’s field of view.
Note: The 45FS1/45UVFS1 scanner provides feedback via its LED display to assist in the adjustment
and proper alignment of the flame scanner. Refer to the setpoint AIM under “Programming the Flame
Signature Scanner” and the “Programming Primer” (Publication CU-33).
7.
When a satisfactory sighting has been confirmed by operational testing, secure the swivel mount’s
ball position in place by tightening the three hex head cap screws located on the swivel mount ring.
8.
For ease of use, the scanner should be installed on the sight pipe so the LED display can easily be
read. If this is not possible, install the scanner with the quick disconnect facing downward.
Note: Operation of the LED display is independent of position.
9.
Due to the micro-processor-based design of the 45FS1/45UVFS1 scanner, the heat insulating nip-
ple (P/N 35-127-1 or 35-127-3)
must be used
to isolate the scanner from ground.
CAUTION: Due to the micro-processor based design of the 45FS1/45UVFS1 scanner, the heat
insulating nipple (P/N 35-127-1 or 35-127-3) must be used to insulate the scanner from ground
and to reduce conducted energy and noise. Failure to do so could result in erratic operation of
the scanner.
IGNITOR
SCANNER
MAIN
BURNER
CCW ROTATION
IGNITOR
SCANNER
MAIN
CCW ROTATION
BURNER
BUT THIS
NOT THIS
NOT THIS
