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50A55-3797 Replaces:

Trane

White-Rodgers

CNT02789

50A55-474

CNT02891

50A55-476

CNT03799

50A55-571

D341122P01

D341235P01

D341235P03

TRANE

INTEGRATED HSI MODULE

DIRECT

REPLACEMENT

50A55-3797

CROSS REFERENCE

Model

Number

Pre-Purge

Time

Heat Delay-

To-Fan-On

Heat Delay-

To-Fan-Off

Cool Delay-

To-Fan-On

Cool Delay-

To-Fan-Off

Post

Purge

50A55-3797

0 sec

45

60 / 100 / 140 / 180

2

0 / 180

5 sec

50A55-3797 TRANE SINGLE STAGE 120v IGNITION

INTEGRATED hsi FURNACE CONTROL

Controls Gas Valve, Ignitor, Blower, Inducer, Humidifier (120V),

and Air Cleaner. Replaces OEM Trane and White-Rodgers Models

FEATURES

• Includes flash code diagnostics.

• Fused to protect low voltage system transformers.

SPECIFICATIONS

Operating Temperature . . . . . . . . . -40 to 176°F

Humidity Range . . . . . . . . . . . . 5% to 93% RH (non-condensing)

Mounting . . . . . . . . . . . . . . . Snap in standoffs

Electrical Ratings @ 77°F (25°C)

Input Voltage . . . . . . . . . . . . . 25 VAC 50 / 60 Hz

Maximum Input Current @ 30 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

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 uA DC

Maximum current for non-detection . . . . . 0.10 uA DC

Maximum allowable leakage resistance . . . 100 M ohms

Timing Spec (@ 60 Hz) maximum

Flame establishing time . . . . . . . . . 0.8 sec

Flame failure response time . . . . . . . 2.0 seconds

NOTE

: At 50 Hz, all timing specifications should be increased by 20%.

NOTE

: Can also use Universal Kit 50M56U-843

New

www.white-rodgers.com

53

HEATING