2
Switch Action: SPDT
Electrical Ratings: See rating label on sensor for specific
electrical rating.
Terminal Designations:
1 - Normally closed
2 - Normally open
4 - Common
Sensing Bulb Type: Slip-in
Timing: Normally open contacts close approximately 60
seconds after the pilot is ignited. Contacts open
approximately 40 seconds after the flame is extin-
guished.
SPECIFICATIONS
INSTALLATION
To avoid personal injury and/or property damage,
shut off gas and electric to heating system until
installation is complete.
1.
Turn off gas and power until replacement is complete.
2.
Remove defective flame sensor from pilot burner and
unplug from gas valve.
3.
Align tip of defective flame sensor with tip of replace-
ment sensor and compare the locations of the C-
rings. If the C-rings are not positioned the same
distance from the tip of the bulb, the replacement
sensor is incorrect for this application and cannot be
used. Contact the OEM for a suggested replacement.
4.
If the position of the C-ring is correct, insert replace-
ment sensor in pilot burner. Uncoil only enough
capillary to allow sensor to be installed. Be sure new
sensing bulb is in the same position as the unit it is
replacing.
5.
Carefully uncoil capillary of new sensor by grasping
capillary at switchcase and sensing bulb, then “stretch”
coil until switchcase reaches gas valve plug. Care-
fully align switchcase with gas valve socket and plug
flame sensor into valve.
6.
Turn on gas and electrical power to the system.
Check system for proper operation by following the
appliance manufacturer's recommended installation
and/or service instructions.
The general sequence of operation is: the pilot flame
will heat the sensor to close the (HOT) contact and
allow the main burner to ignite when the thermostat
calls for heat. Upon loss of pilot flame, the sensor will
cool and transfer to the (COLD) contact, which pre-
vents the gas valve from being energized.
CAUTION
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