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DIRECT
REPLACEMENT
LENNOX
INTEGRATED HSI MODULE
21d83m-843 LENNOX NITRIDE IGNITION
INTEGRATED HSI FURNACE CONTROL KIT
Controls Gas Valve, Ignitor, Blower, Inducer, Humidifier and
Air Cleaner
FEATURES
• Includes diagnostic indicator flash codes.
• 3 fan speeds.
• Remote flame sense.
• Humidifier and electronic air cleaner connections (optional).
SPECIFICATIONS
Input Voltage . . . . . . . . . . 25 VAC 50 / 60 Hz
Maximum Input Current @ 25 VAC . . 0.45 amp
Valve Relay . . . . . . . . . . . 1.5 amp @ 25 VAC 50 / 60 Hz 0.6 pf
Ignitor Relay . . . . . . . . . . 2.0 amp @ 120 VAC 50 / 60 Hz (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 to +175°F (-40 to +79°C)
Humidity Range . . . . . . . . . 5% to 93% relative humidity (non-condensing)
21D83M-843
Model
Number Pre-Purge
Delay Heat Delay Cool Auto Reset
ON OFF ON OFF
21D83M-843 15 45 60 / 90 / 120 / 180 2 2/45 60 minutes
CROSS REFERENCE
21D83M-843 Replaces:
Lennox White-Rodgers
100925-01 56L8301 50A62-120
100925-02 56L84 50A62-121
100925-03 56L8401 50A62-820
10M93 63K89 50A66-122
124110 63K8901 50A66-123
17W92 65867 50A66-743
17W9201 69M08 50A66-843
23W51 69M0801
23W5101 69M15
24L85 69M1501
24L8501 83M00
30W25 83M001
30W2501 97L48
32M88 97L4801
56L83 L39-564
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