White Rodgers F145-0825 - Manual

WHITE-RODGERS
INSTALLATION INSTRUCTIONS
PART No. F145-0825
REPLACEMENT FLAME SENSORS
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)
Alternate
Type 956-128 (Type 956-133)
Fig. 3
Fig. 4 - New Style Flame Sensor.
(Type 956-128)
Fig. 2
NOTE: Select proper bracket for your application, if replacement is necessary
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
r e m o v e d e f e c t i v e C e l l A s s e m b l y b y r o t a t i n g
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 956-72)
CELL ASSEMBLY
6. Close ignition transformer, being sure Flame Sensor leads
are clear of cover. Restore electric power and check burner
for proper operation.
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.
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.
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123
Printed in U.S.A.
PART NO. 37-3156-A (8504)
Replaces 37-3156
ISIUIISnSON