White Rodgers 50T35-743 Installation Instructions Manual

FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
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:
Model
White-Rodgers 50T35-730 Goodman B18099-06 Goodman B18099-13S
White-Rodgers 50T35-743 Goodman B18099-08 Goodman 1012-933D
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 conditioning 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.
Replaces
Goodman B18099-10 Goodman 41F-5
Goodman B18099-13
www.white-rodgers.com
www.emersonclimate.com
50T35-743
Integrated Furnace Control

INSTALLATION INSTRUCTIONS

WARNING
Failure to comply with the following
warnings could result in personal injury
or property damage.
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 servicing
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.
DESCRIPTION
PRECAUTIONS
PART NO. 37-6533C
Replaces 37-6533B
1421