Product Overview

WR-8272-E
Saint Louis, Missouri Markham, Ontario
314-553-3600 905-948-3411
www.white-rodgers.com
www.emersonclimate.com
The Emerson logo is a trademark and
a service mark of Emerson Electric Co.
50A55-743
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
Timing Specifications
(All times are in seconds unless noted otherwise)
* These times will vary depending on option
switch position. See OPERATION section for
further information.
NOTE: Can also use Universal Kit 50M56U-843
50A55-743 Cross Reference
50A55-743 Replaces:
0130F00005
0130F00005S
B1809926
B1809926S
PCBBF110
PCBBF110S
PCBBF112
PCBBF112S
PCBBF123
PCBBF123S
50A55-289
50A55-743
50T55-289
Goodman White-Rodgers
Features
• 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
Specifications
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)
Mounting
Surface mount multipoise
Timing Specifications (@ 60 Hz**)
Maximum
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.
Dimensions
4.375" W x 5.875" H x 1.25" D
For Additional Information
Visit www.white-rodgers.com
Replaces:
White-Rodgers 50T55-289 and 50A55-289 and
Virtually All Goodman Single-Stage HSI Controls with 120V Ignitors.
Single-Stage
HSI Integrated
Furnace Control Kit
50A55-743
OEM
Replacement