White Rodgers 50M56-743 Furnace User Manual


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50M56-743
Integrated Single or Two-Stage
HSI Integrated Furnace Control Kit
INSTALLATION INSTRUCTIONS
DESCRIPTION
The 50M56-743 kit is an automatic gas HSI Integrated Fur-
nace 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 ther-
mostat 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.
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.
PRECAUTIONS
CAUTION
!
Do not short out terminals on gas valve or primary
control. Short or incorrect wiring may damage the
thermostat.
Failure to comply with the following warnings could result
in personal injury or property damage.
FIRE HAZARD
• Donotexceedthespecied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ame.
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.
WARNING
!
CONTENTS
Description ................................................................... 1
Precautions .................................................................. 1
Specifications .............................................................. 2
Installation ................................................................... 3
Mounting & Wiring
Operation ..................................................................... 6
System Lockout and Diagnostic Features ................... 7
Troubleshooting ........................................................... 8
www.white-rodgers.com
www.emersonclimate.com
PART NO. 37-7474A
1314
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
Operator:Savetheseinstructionsforfutureuse!
50M56-743CrossReferenceInformation
Goodman White-Rodgers
0130F00006 PCBBF122 50M56 289
0130F00006S PCBBF122S
PCB00109 PCBBF132
PCBBF109 PCBBF132S
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