5059
Pilot Relight Control
WHITE-RODGERS
INSTALLATION INSTRUCTIONS
Operator: Save these instructions for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BE-
FORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PER-
SONAL INJURY AND/OR PROPERTY DAMAGE.
DESCRIPTION
The 5059 Pilot Relight Control is a low voltage control that
generates ignition sparks. It is energized by the thermo-
stat on a call for heat. Once flame is established, the
control senses the flame and stops sparking. If the pilot
flame is extinguished during a call for heat, the relight
control will begin sparking immediately upon sensing
absence of flame. The control delivers very low current
sparks (approximately 6,000 volts).
C
WHITE-RODGERS DIV.
A
EMERSON ELECTRICU
T
I
O
N
PRECAUTIONS
CAUTION
Label all wires prior to disconnection when ser-
vicingcontrols.Wiringerrorscancauseimproper
and dangerous operation.
If in doubt whether you wiring is millivolt, line, or low
voltage, have it inspected by a qualified heating and air
conditioning contractor, electrician, or someone familiar
with basic electricity and wiring.
!
Do not exceed the specification ratings.
Following installation or replacement, follow
appliance manufacturer’s recommended instal-
lation/service instructions to insure proper op-
eration.
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.
This control is not intended for use in locations
where it may come in direct contact with water.
Suitable protection must be provided to shield
the control from exposure to water (dripping,
spraying, rain, etc.).
CAUTION
!
To prevent electrical shock and/or equipment
damage, disconnect electrical power to the sys-
tem, at the main fuse or circuit box, until installa-
tion is complete.
WARNING
!
Do not use on circuits exceeding specified volt-
age. Higher voltage will damage the control and
may cause shock or fire hazard.
SPECIFICATIONS
Electrical Rating:
24 VAC (30 VAC max.)
60 Hz
Mounting:
Surface mount or 2” x 4” switch box
0.030 Amps
Ambient Temperature Range:
-40°F to +175°F
WHITE-RODGERS DIVISION
EMERSON ELECTRIC CO.
9797 REAVIS ROAD
ST. LOUIS, MISSOURI 63123-5398
PART NO. 37-4778B
Replaces Part No. 37-4778A
Printed in U.S.A.
9514
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NOTE
CAUTION
!
To prevent electrical shock and/or equipment
damage, disconnect electrical power to the sys-
tem at the main fuse or circuit breaker box, until
installation is complete.
The typical wiring diagram (fig. 4) shows only the terminal
identification and wiring hook-up. Always refer to wiring
instructions provided by the equipment manufacturer for
system hook-up operation.
When used in a grounded secondary circuit, T2 terminal
must be connected to a ground.
All wiring should be installed according to national and
local electrical codes and ordinances.
Main
Pilot Redundant
Valve Relay
Solenoid Valve
5059 Pilot Relight Control
C
H
120 VAC
24 VAC
Line
Pressure Switch
in Pilot Gas
(normally open)
Transformer
Mercury Flame
Switch Sensor
Through
To Electrode
Mounting Hole
Thermostat
Switch
Figure 4. Typical wiring diagram
3
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If you need further information about this product, please write to
White-Rodgers Division, Emerson Electric Co.
9797 Reavis Road
St. Louis, MO 63123-5398
Attention: Technical Service Department
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