White Rodgers 50A55-743 - Manual

Goodman

White-Rodgers

0130F00005

PCBBF110

PCBBF123

50A55-743

0130F00005S PCBBF110S PCBBF123S

50A55-289

B1809926

PCBBF112

50T55-289

B1809926S

PCBBF112S

50A55-743

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.

DESCRIPTION

INSTALLATION INSTRUCTIONS

The 50A55-743 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.
These controls incorporate 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

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 compo-
nents could cause the control to malfunction.
Following installation or replacement, follow manufacturer’s
recommended installation/service instructions to ensure
proper operation.

WARNING

!

Failure to comply with the following warnings could

result in personal injury or property damage.
FIRE HAZARD

• Do not exceed the specified voltage.
• Replace existing control with exact model and

dash number.

• 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.

www.white-rodgers.com

www.emersonclimate.com

PART NO. 37-7348A

1226

CAUTION

!

Do not short out terminals on gas valve or primary
control. Short or incorrect wiring may damage
the thermostat.