White-Rodgers 21D83M-843 Single-Stage/HSI Furnace Control Kit

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Part Number: 21D83M-843

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Description

The White-Rodgers 21D83M-843 is designed to replace aging Lennox single-stage integrated furnace controls. Whether you’re a homeowner or an HVAC professional, this control kit offers essential features for optimizing your furnace system.

Features:

Direct Replacement: The 21D83M-843 is a drop-in replacement for many Lennox models, making installation hassle-free.
LED Diagnostic Indicators: Quickly troubleshoot system issues during installation and service.
Multiple Fan Speeds: Choose from three fan speeds to customize airflow.
Remote Flame Sensor: Ensures reliable ignition.
Humidifier and Air Cleaner Connections: Conveniently power accessories when the fan comes on.
Extra Motor/Park Terminals: Secure extra motor lead wires without cutting connectors.

Specifications:

Input Voltage: 25 VAC, 50/60 Hz
Valve Relay: 1.5 amp @ 25 VAC
Ignitor Relay: 2.0 amp @ 120 VAC (resistive)
Inducer Relay: 2.2 FLA / 3.5 LRA @ 120 VAC
Circulator Relay: 14.5 FLA / 25.0 LRA @ 120 VAC
Operating Temperature Range: -40°F to +175°F (-40°C to +79°C)

Timing Specifications:

Pre-purge: 15 seconds
Heat delay to fan ON: 45 seconds
Heat delay to fan OFF: 60/90/120/180 seconds
Cool delay to fan ON: 2 seconds
Cool delay to fan OFF: 2/45 seconds
Auto reset: 60 minutes

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