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DIRECT

REPLACEMENT

50A66-743

50A66-743 LENNOX NITRIDE IGNITION

INTEGRATED HSI FURNACE CONTROL

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)

Model

Number

Pre-Purge

Delay Heat

Delay Cool

Auto Reset

ON

OFF

ON

OFF

50A66-743

15

45 60 / 90 / 120 / 180 2

2/45

60 minutes

50A66-743 Replaces:

Lennox

White-Rodgers

100925-01

30W25

50A66-122

100925-02

30W2501

50A66-123

100925-03

69M08

17W92

69M0801

17W9201

69M15

23W51

69M1501

23W5101

CROSS REFERENCE

LENNOX

INTEGRATED HSI MODULE

www.white-rodgers.com

51

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