White Rodgers F145-0825 User Manual
INSTALLATION INSTRUCTIONS
WHITE-RODGERS
These Flame Sensors may be used for replacing the entire unit
on "Old Style" Flame Sensors, or for replacing the Cell
Assembly only on "New Style" Flame Sensors.
REPLACING "NEW STYLE" FLAME SENSORS
"NEW STYLE" FLAME SENSORS
Fig. 1
(Type 956-126)
On "New Style" Flame Sensors (Fig. 1,2, or3),to replace
the Cell Assembly:
1. Shut off electric power. Disconnect Flame Sensor leads
from the primary control.
2. Loosen screws holding ignition transformer and swing away
transformer to gain access to Flame Sensor.
3. Do not disturb position of bracket shown in Fig. 4. Simply
remove defective Cell Assembly by rotating
counterclockwise.
4. Install new Cell Assembly by inserting end through notched
opening in bracket and rotating clockwise.
5. Reconnect leads of Flame Sensor to primary control, being
sure that leads are clear of blower wheel.
(Type 956-128)
Fig. 2
NOTE: Select proper bracket for your application, if replacement is necessary
PART No. F145-0825
REPLACEMENT FLAME SENSORS
Alternate
Type 956-128
(Type 956-133)
Fig. 4 - New Style Flame Sensor.
CELL ASSEMBLY
Fig. 3
6. Close ignition transformer, being sure Flame Sensor leads
are clear of cover. Restore electric power and check burner
for proper operation.
(Type 956-72)
REPLACING "OLD STYLE" FLAME SENSORS
To replace any of the "Old Style" Flame Sensors shown in
Fig. 5, 6, or 7, shut off electric power and disconnect Flame
Sensor leads from primary control. Loosen screws holding
ignition transformer and swing away transformer. Then replace
Flame Sensor according to instructions A, B, or C, which
follow:
A. Scroll Plate-Mounted Flame Sensor (Fig. 5)
1. Remove and set aside Flame Sensor Mounting Screw.
2. Reach beneath Scroll Plate and remove (and discard) old
Flame Sensor.
3. Assemble new 956-126 Flame Sensor as shown in Fig. 1
4. Install new Flame Sensor in exact same location as old
Flame Sensor and tighten mounting screw securely.
Reconnect leads of Flame Sensor to primary control,
being sure that leads are clear of blower wheel.
WHITE-RODGERS DIVISION
ISIUIISnSON
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123
Printed in U.S.A.
Fig. 5 — Old Style Flame Sensor.
5. Close ignition transformer, being sure Flame Sensor
leads are clear of cover. Restore electric power and
check burner for proper operation.
Continued on next page.
PART NO. 37-3156-A (8504)
Replaces 37-3156
REPLACING "OLD STYLE” FLAME SENSORS (continued)
B. Oil Line-Mounted Flame Sensor (Fig. 6)
1. Observe flame sensor position and mark location of Cad
Cell on the oil line for reference as shown in Fig. 6. Then
remove and discard the entire Flame Sensor by
removing screw holding mounting bracket to the oil line.
2. Assemble new 956-128 Flame Sensor as shown in Fig.
2.
3. Install new Flame Sensor to oil line taking care to locate
mounting bracket so that Cad Cell of new Flame Sensor
will have same view of the oil flame as the old Flame
Sensor (use reference mark on oil line). Be sure screw is
securely tightened.
4. Reconnect leads of Flame Sensor to primary control,
being sure that leads are clear of blower wheel.
5. Close ignitign transformer, being sure Flame Sensor
leads are clear of cover. Restore electric power and
check burner for proper operation.
C. Flame Sensor Mounted on Side of Burner Housing (Fig. 7)
1. Remove Housing Mounting Clip from side of burner
housing as shown in Fig. 7. Then remove and discard old
Flame Sensor from Housing Mounting Clip.
2. Assemble new 956-133 Flame Sensor as shown in Fig. 3.
3. Insert bracket of new Flame Sensor into Housing
Mounting Clip. Then replace Housing Mounting Clip on
side of burner housing.
4. Reconnect leads of Flame Sensor to primary control,
being sure that leads are clear of blower wheel.
5. Close ignition transformer, being sure Flame Sensor
leads are clear of cover. Restore electric power and
check burner for proper operation.
OIL LINE
\
■71
OF CAD CELL
CELL -
Fig. 6 — Old Style Flame Sensor.
______
FLAME SENSOR
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