White Rodgers 50A55-843 Installation Instructions Manual

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50A55-843
Universal Integrated Furnace Control
INSTALLATION I NSTRUCTIONS
Rodgers
Operator: Save these ins&rrctbns for future use!
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS
CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
DESGRIPTION
The 50A55-843 is an automatic gas interrupted ignition control
that employs a microprocessor to continually monitor, analyze,
and control the proper operation of the gas burner, induu-er, and
fan.
Signals interpreted during continual surveillance of the thermo-
stat and flame sensing element initiate automatic ignition of the
bumer, sensing ol the flame, and syslem shut-off dunng normal
operation.
Ttrese controls incorporate system fault analysis for quick gas
flow shut-off, coupled with automatic ignition retry upon sensing
a faull correction.
TRANE APPLICATION - Installer MUST read page 3 "Mounting and Wiring"
PRECAUNONS
lnstallation should be done by a qualified heating and air
conditioning contractor or licensed electrician.
lf in doubt about whether your wiring is millMofi, line, or low
voltage, have it inspected by a qualified heating and air condi-
tioning contractor or licensed electrician.
Elo not exceed the spec-ification ratings.
All wiring must contorm to local and national electrical codes and
ordinances.
This control is a precision instrument, and should be handled
carefully. Rough handling ordistorting components could cause
the control to matfunction.
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.
AWARNING
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Failure to comply with the following
wamings could resuh 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.).
. lf 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.
+i
EMERSON.
Clinate Technologies
White-Rodgers is a division
of Emerson Electric Co.
www.white-rodgers.com
PART NO.376265G
Replaces 37-6265F
0526