White Rodgers 50T35-743 - Manual

WARNING
Failure to comply with the following
warnings could result in personal injury
or property damage.
50T35-743
Integrated Furnace Control
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
PART NO. 37-6533B
Replaces 37-6533A
0614
DESCRIPTION
INSTALLATION INSTRUCTIONS
The 50T35-743 is an automatic gas interrupted ignition control that employs a microprocessor to continually monitor, analyze, and
control the proper operation of the gas burner, inducer, and fan. Signals interpreted during continual surveillance of the thermostat
and flame sensing element initiate automatic ignition of the burner, sensing of the flame, and system shut-off during normal
operation. This control incorporates system fault analysis for quick gas flow shut-off, coupled with automatic ignition retry upon
sensing a fault correction. It is designed as a replacement for the following controls:
PRECAUTIONS
FIRE HAZARD
• Do not exceed the specified voltage.
• Protect the control from direct contact with water
(dripping, spraying, rain, etc.).
• If the control has been in direct contact with water,
replace the control.
• Label all wires before disconnection when servic-
ing controls. Wiring errors can cause improper
and dangerous operation.
• Route and secure wiring away from flame.
SHOCK HAZARD
• Disconnect electric power before servicing .
• Ensure proper earth grounding of appliance.
• Ensure proper connection of line neutral and line
hot wires.
EXPLOSION HAZARD
• Shut off main gas to appliance until installation is
complete.
Installation should be done by a qualified heating and air
conditioning contractor or licensed electrician.
If in doubt about whether your wiring is millivolt, line, or low
voltage, have it inspected by a qualified heating and air condi-
tioning contractor or 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 components could cause
the control to malfunction.
Following installation or replacement, follow manufacturer’s
recommended installation/service instructions to ensure proper
operation.
CAUTION
Do not short out terminals on gas valve or primary
control. Short or incorrect wiring may damage the
thermostat.
Model Replaces
White-Rodgers 50T35-743 Goodman B18099-06
Goodman B18099-08
Goodman B18099-10
Goodman B18099-13
Index Page
Description 1
Precautions 1
Specifications 2
Installation 3
Typical System Wiring 5
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