FAILURE TO READ AND FOLLOW ALL INSTRUCTIONS CAREFULLY
BEFORE INSTALLING OR OPERATING THIS CONTROL COULD CAUSE
PERSONAL INJURY AND/OR PROPERTY DAMAGE.
PARTS INCLUDED
•
50X57-843 Integrated Furnace Control
• 2 - Harness Assemblies for Lennox Applications
• 1 - Rollout Shunt Jumper for Trane Applications
• 1 - Motor Common Adapter Wire for Trane Applications
• 4 - Plastic Mounting Standoffs and 1 – Bumper Stub
• 3 - ½” Sheet Metal Mounting Screws
• 2 – Wire Ties
• Installation Instructions
DESCRIPTION
SPECIFICATIONS
ELECTRICAL RATINGS:
Input Voltage:
25 VAC, 50/60 Hz
Max Input Current:
0.8 A @ 25 VAC
Relay Load Ratings:
Gas Valve: 1.5 A 0.6 PF @ 30 VAC
Ignitor Relay: 1.2 A @ 120 VAC
Inducer Relay: 2.8 A @ 120 VAC
Circulator Relays: 12.0 mA @ 30 VAC
Humidifier Load: 1.0 A @ 120 VAC
0.5 A @ 24 VAC
Electronic Air Cleaner: 1.0 A @ 120 VAC
Flame Current Requirements:
Min current to ensure flame detection: 0.31 μA DC*
Max current for non-detection: 0.1 μA DC
Max allowable leakage resistance: 100 M ohms
* Measuring with a DC voltmeter (1VDC = 1 μA)
Flame Failure Response Time: 2.5 seconds maximum
OPERATING TEMPERATURE RANGE:
-40° to 176°F (-40° to 80°C)
HUMIDITY RANGE:
5 to 95% relative humidity (non-condensing)
AGENCY APPROVALS:
UL
GASES APPROVED:
Natural, Manufactured, Mixed,
Liquid Petroleum, and LP Gas Air Mixtures
PART NO. 37-7672001
1815
50X57-843 for ECMx Furnaces
Universal Integrated Single Stage
120V Hot Surface Ignition Control Kit
INSTALLATION INSTRUCTIONS
The 50X57-843 is an aftermarket universal replacement
control kit for single stage furnaces with ECMx constant
torque blower motors.
CAUTION
!
Risk of Electric Shock.
Disconnect electric power
to system until installation
is complete. Do not use on
circuit exceeding specified
voltage. Higher voltage will
damage control and could
cause shock or fire hazard.
This control is not intended
for use in locations where
it may come in contact with
water.
May cause flame rollout.
Shut off main gas to heat-
ing system until installa-
tion is complete.
TWINNING: 50X57-843 can be twinned. Both control
boards must be from the same manufacturer for proper
functionality.
INSTALLER MUST READ
SPECIAL REPLACEMENT
INSTRUCTIONS FOR
CARRIER
,
TRANE
AND
LENNOX
ON
PAGE 2
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