Home :: Control Circuit Boards and Heat Pump Controls :: White Rodgers Single-Stage HSI Integrated Furnace Control Kit 50A55-743

White Rodgers Single-Stage HSI Integrated Furnace Control Kit 50A55-743

White Rodgers Single-Stage HSI Integrated Furnace Control Kit 50A55-743
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White Rodgers Single-Stage HSI Integrated Furnace Control Kit 50A55-743

White-Rodgers 50T55-289 and 50A55-289
and Virtually All Goodman Single-Stage
HSI Controls with 120V Ignitor

• 120 VAC Ignitor Output
• 120 VAC Humidifier Output
• 120 VAC Electronic Air Cleaner Output
• 120 VAC 2-Speed PSC Circulator Output
• Fuse Protection – 5 Amp
• Furnace Status LED
• Heat Fan OFF Delay (Dipswitch Selectable)
• Y, W, R, G, C, TWIN Terminals

50A55-743 Cross Reference 50A55-743 Replaces:


White Rodgers

Electrical Ratings [@ 77°F (25°C)]
Input Voltage: 25 VAC 50/60 Hz
Max. Input Current @ 25 VAC: 0.45 amp
Relay Load Ratings
Valve Relay: 1.5 amp @ 25 VAC 50/60 Hz 0.6 pf
Ignitor Relay: 6.0 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
Flame Current Requirements
Minimum current to insure flame detection: 1 μa DC*
Maximum current for non-detection: 0.1 μa DC*
Maximum allowable leakage resistance: 100 M ohms
*Measured with a DC microammeter in the flame probe lead
Operating Temperature Range
-40° to 175°F (-40° to 80°C)
Humidity Range
5% to 93% relative humidity (non-condensing)
Surface mount multipoise
Timing Specifications (@ 60 Hz**)
Flame Establishing Time: 0.8 sec
Flame Failure Response Time: 2.0 sec
**At 50 Hz, all timing specifications should be increased by 20%
Gases Approved: Natural, Manufactured, Mixed,
Liquified Petroleum and LP Gas Air Mixtures are
all approved for use.

Timing Specifications
(All times are in seconds unless noted otherwise)


Pre-purge: 15
Ignitor warm-up: 7
(1st 64 attempts)
Minimum ignitor warm-up: 5
Maximum ignitor warm-up: 9
Ignition activation period: 2
Trial for ignition period: 4
Retries: 2 times
Valve sequence period: 12
Interpurge: 30
Post-purge 15
Lockout time 300
Heat delay to fan ON 30
Heat delay to fan OFF* 90/120/150/180
Cool delay to fan ON 5
Cool delay to fan OFF 45
Auto reset 60 minutes
Humidifier Yes
Electronic air cleaner Yes
SKU SKU18156
Weight 3.00 lbs
Our price: $154.00 (115.50)
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