White Rodgers 50D50-843 Universal Proven Pilot Spark Control for All Gases Installation Instructions
50D50-843
Universal Proven Pilot Spark Control
INSTALLATION INSTRUCTIONS
FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY BEFORE
INSTALLING OR OPERATING THIS CONTROL COULD CAUSE PERSONAL
INJURY AND/OR PROPERTY DAMAGE.
CONTENTS
Description ................................................................. 1
Precautions ................................................................ 1
Specifications ............................................................. 2
Installation .................................................................. 2
Mounting & Wiring ....................................................... 2
Operation & Troubleshooting ...................................... 3
DESCRIPTION
PRECAUTIONS
Application of this type of control may cause
flame rollout on initial startup and could cause
personal injury and/or property damage.
Check product specification and cross reference
before replacing existing module. Do not use if
existing module is not listed. Use of a program
key other than listed can result in appliance
malfunction.
GENERAL PRECAUTION
!
The 50D50-843 is a universal replacement Spark control
designed for maximum compatibility with existing systems.
It features:
•
A card port and ten program keys to select the
Safety Time, Retries, Pre-purge and Recycle
timings.
•
A Jumper to accommodate systems using Direct
Sense (sensing through ignitor) or Indirect Sense
(using a Flame Sensor)
•
LEDindicatorforquicksystemandmodulediagnostics
and troubleshooting.
If in doubt about whether your wiring is millivolt, line, or
lowvoltage,haveitinspectedbyaqualifiedheatingand
air conditioning contractor or licensed electrician.
Do not exceed the specification ratings.
Allwiringmustconformtolocalandnationalelectrical
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.
To prevent electrical shock and/or equipment
damage, disconnect electric power to system at
main fuse or circuit breaker box until installation
is complete.
Label all wires prior to disconnection when
servicing controls. Wiring errors can cause
improper and dangerous operation.
This control is not intended for use in locations
where it may come in contact with water. Suitable
protection must be provided to shield the control
from exposure to water (dripping, spraying,
rain, etc.).
CAUTION
!
Do not use on circuits exceeding specified voltage.
Higher voltage will damage control and could
cause shock or fire hazard.
Do not short out terminals on gas valve or primary
control to test. Short or incorrect wiring will
damage thermostat and could cause personal
injury and/or property damage.
WARNING
!
www.white-rodgers.com
www.emersonclimate.com
PART NO. 37-6576H
Replaces 37-6576G
1423
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