48C21-707

PS1-X3A

• Multiple mounting styles
• Works with 15, 17 or 45 sec HSI systems
• 200 deg C lead insulation temperature
• Molex internally keyed connector with 0.093" male pins
• Highly reliable ignition source
• A style mounting block
• Sealed combustion

767A-369

• System diagnostic LED with fault recall
• Multi speed circulator
• 1 or 2-stage gas valve
• Relay load ratings - 1.5 amp at 25 VAC 50/60 Hz 0.6 pico-F valve relay, 6 amp at 120 VAC 50/60 Hz (resistive) igniter relay, 2.2 amp full load, 3.5 amp locked rotor at 120 VAC inducer relay, 14.5 amp full load, 25 amp locked rotor at 120 VAC circulator relay
• Flame current requirements - 1 micro-amp DC minimum current to insure flame detection, 0.10 micro-amp DC maximum current for non-detection, 100 mega-ohm maximum allowable leakage resistance
• 0.8 sec flame establishing time, 2 sec flame failure response time

white rodgers 50m56-743

767A-379

37C73U-168

• Humidity control offers humidification/dehumidification
• Dual fuel capable with smart fuel logic program or outdoor temperature sensor
• Exclusive cool savings feature saves energy during peak A/C demand periods
• Remote sensing indoor or outdoor and at the thermostat
• Programmable fan, automatic daylight savings option, large, 12 sq-inch display with 10 sec backlight
• 4-time and 4-temperature settings per program (2-setbacks) heat and cool or selectable - 2-time and 2-temperature settings (1-setback)
• Energy savings up to 33%
• Large, 12 sq-inch touchscreen display blue, high-contrast lighted display for easier low-light viewing
• Larger, easy-to-read character size, extra-large touch keys for easy operation
• Selectable energy management recovery, fast (FA) or slow (SL) heating cycle anticipation, exclusive call for service diagnostic indicator
• Compressor lockout protection, electric heat option, milliVAC compatible
• Intuitive menu-driven set-up, programming and operation with audio prompt to confirm touchscreen entries
• Permanent program retention during power loss
• Indefinite setpoint hold or 4 hr temporary temperature override
• Temporary temperature override - can be set from 15 min for temporary adjustments up to 7 days for VAC ation override
• Auto heat/cool changeover option - automatically switches between heating and cooling programs
• Heating and cooling, heating only or cooling only configuration (installer selectable)
• Setpoint temperature limited range capable, enhanced (variable) touchscreen security prevents tampering
• Furnace filter change reminder, humidifier pad change reminder
• Maintains room temperature to within plus or minus 1 deg F
• Room temperature display can be recalibrated up to plus or minus 4 deg F
• User interface - (T) touchscreen/(B) butTon, audible feedback
• Battery with power stealing assist
• 5 years limited warranty

1F95-1291

• Includes diagnostic indicator flash codes
• 3-fan speeds
• Remote flame sensing

white rodgers 21d83m-843

50D50-801

• System diagnostic LED with fault recall
• Fused to protect low voltage system transformers
• 3 fan speeds
• Adapter harness for application flexibility
• 15 sec pre-purge time
• 30/45 heat delay for to fan on, 60/90/120/180 heat delay for to fan off, 2 cool delay for to fan on, 2/60 cool delay for to fan off, default setting
• 5 sec post-purge
• 0.8 sec max flame failure response time
• 2 sec flame failure response time
• 1.5 amp at 25 VAC 50/60 Hz for valve relay, 1.2 amp at 120 VAC 50/60 Hz for ignitor relay
• Surface mount standoffs
• 5 - 93% RH, non-condensing humidity

white rodgers 50m56u-801

756-50