Printed in U.S.A.
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS RD.
ST. LOUIS, MO. 63123-5398
3094
PLUG-IN FLAME SENSORS
FOR WHITE-RODGERS PLUG-IN GAS VALVES
INSTALLATION INSTRUCTIONS
PRECAUTIONS
If in doubt about whether your wiring is millivolt, line, or low
voltage, have it inspected by a qualified heating and air
conditioning contractor or a licensed electrician.
Do not exceed the specification ratings.
All wiring must conform to local and national electrical
codes and ordinances.
This control is a precision instrument, and should be
handled carefully. Rough handling or distorting compo-
nents could cause the control to malfunction.
To prevent electrical shock and/or equipment
damage, disconnect electric power to system at
main fuse or circuit breaker box until installation
is complete.
PART NO. 37-5742A
9636
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
These flame sensors are designed for use with the White-
Rodgers gas valves having plug-in receptacle. The sen-
sors are simply plugged in with no additional electrical
connections or mounting devices required.
When used with these valves, they prevent the flow of gas
to the main burner if the pilot flame is not burning or is
insufficient to properly ignite the main burner.
The 3094 Flame Sensors are SPDT (single-pole double-
throw) devices. Some models have an EQSO (electrical
quick shut-off) resistor in parallel with the cold contact to
prevent gas flow with a momentary loss of power. Other
models have a .250“ spade terminal connected to the hot
ATTENTION!
This product contains mercury. There will not be any exposure to mercury under normal conditions of use. This product may
replace a unit which contains mercury. Do not open mercury cells. If a cell becomes damaged, do not touch any spilled
mercury. Wearing nonabsorbent gloves, take up the spilled mercury with sand or other absorbent material and place into a
container which can be sealed. If a cell becomes damaged, the unit should be discarded. Mercury must not be discarded in
household trash. When this unit or the unit it is replacing is to be discarded, place in a suitable container and return to us .
Shut off main gas to heating system until installa-
tion is complete.
Label all wires prior to disconnection when ser-
vicing controls. Wiring errors can cause improper
and dangerous operation.
Following installation or replacement, follow ap-
pliance manufacturer's recommended installa-
tion and/or service instructions to insure proper
operation.
Operator: Save these instructions for future use!
WHITE-RODGERS
WARNING
!
CAUTION
!
terminal for operation of a fan relay. The sensing bulbs are
the slip-in type with a retaining ring installed in a specific
groove for correct positioning of the bulb in the pilot flame.
These flame sensors are not universal replacements.
Each flame sensor type has been designed for a specific
application and voltage. They can replace only the iden-
tical type in applications where it was originally installed
by the equipment manufacturer. If the mercury flame
sensor is not the same type number as the one being
replaced, contact the original equipment manufacturer
(OEM) for a suggested replacement.
