WHITE-RODGERS 50A55-3797 Furnace Board,For Trane Furnace Systems,

White Rodgers 50A55-3797 120V Hot Surface Ignition Control Board For Trane Trane Single Stage 120V Ignitor HSI Integrated Furnace Control Kit Replaces Trane CNT02789, CNT02891, CNT03799, CNT2789, CNT2891, CNT3799, D341122P01, D341235P01, D341235P03, White Rodgers 50A55-474, 50A55-476, 50A55-3797, 50A55-571 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 Specifications Electrical Ratings [@ 77 Degrees F (25 Degrees C) ]
InputVoltage: 25 VAC 50/60 Hz Max. Input Current @ 25
VAC: 0.45 amp
RelayLoadRatingsValveRelay: 1.5 amp @ 25 VAC 50/60 Hz 0.6 pf
IgnitorRelay: 6.0 amp @ 120 VAC 50/60 Hz (resistive)
InducerRelay: 2.2 FLA 3.5 LRA @ 120
VACCirculatorRelay: 14.5 FLA 25.0 LRA @ 120 VAC Flame Current Requirements Minimum current to insure flame detection: 1 µa
DC*Maximumcurrentfornon-detection: 0.1 µa
DC*Maximumallowableleakageresistance: 100 M ohms *Measured with a DC microammeter in the flame probe lead Operating Temperature Range -40 Degrees to 175 Degrees F (-40 Degrees to 80 Degrees C) Humidity Range 5% to 93% relative humidity (non-condensing) Timing Specifications (All times are in seconds unless noted otherwise) Pre-purge 0 Ignitor warm-up 17 (1st 64 attempts) Minimum ignitor warm-up 11 Maximum ignitor warm-up 21 Ignition activation period 3 Trial for ignition period 4 Retries 2 times Valve sequence period 12 Interpurge 60 Post-purge 5 Lockout time 300 Heat delay to fan ON 45 Heat delay to fan OFF* 60/100/140/180 Cool delay to fan ON 2 Cool delay to fan OFF 0/180 Auto reset 60 minutes Humidifier Yes Electronic air cleaner Yes * These times will vary depending on option switch position. See OPERATION section for further information.