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.
50E47-843
Universal Hot Surface Ignition Control
PART NO. 37-6426F
Replaces 37-6426E
1042
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
Operation & Troubleshooting ......................................... 4
DESCRIPTION
PRECAUTIONS
The 50E47-843 is a universal replacement Hot Surface Ignition
(HSI) control designed for maximum compatibility with existing
systems. It features:
•A card port and six program keys to select the
Trial for Ignition Time, Retries, Prepurge and
Igniter Warm Up timings.
•AJumpertoaccommodatesystemsusingDirect
Sense (sensing through ignitor) or Indirect Sense
(using a Flame Sensor).
•LEDindicatorforquicksystemandmodulediagnosticsand
troubleshooting.
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.
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 dan-
gerous 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.).
If in doubt about whether your wiring is millivolt, line, or low volt-
age,haveitinspectedbyaqualiedheatingandairconditioning
contractor or licensed electrician.
Do not exceed the specification ratings.
Allwiringmustconformtolocalandnationalelectricalcodes
and ordinances.
This control is a precision instrument, and should be handled
carefully. Rough handling or distorting components could cause
the control to malfunction.
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