Bryant Variable Speed Furnace With Evolution Thermostat

The bryant 987m evolution is a two stage variable speed gas furnace.

Bryant variable speed furnace with evolution thermostat.

Enjoying energy wise comfort is now easier than ever with our model 315a gas furnace and simplified system control. Bryant reserves the right to discontinue or change any specification or design without prior notice or obligation. You ll also experience the additional benefit of summertime humidity control through variable speed airflow. For the ultimate in quiet efficiency the model 987m warms your winters with up to 98 3 afue efficiency.

Unprecedented comfort and efficiency from bryant pamper yourself with exceptional comfort and consistent temperature control. Controls thermostats. The 987m meets the energy star most efficient 2014 guidelines in all sizes with an efficiency of up to 98 3 afue. The primary heat exchanger is made of corrosion resistant aluminized steel with a fin and tube stainless steel secondary heat exchanger.

You ll have the cozy and consistent comfort of variable speed operation with a furnace that is extremely efficient in its electrical use year round. Summer savings the variable speed model 926t with properly matched cooling system components is a great choice for improving seer energy efficiency during the cooling season. Hybrid heat system capable allows gas furnace heat pump system combinations for enhanced heating efficiencies. The modulating thermostat outputs a pulse width modulated signal on its v terminal that controls the gas valve on the furnace over a 40 100 power range.

The variable speed motor operates on low speed the majority of the time providing increased efficiency and quiet operation. According to the thermostat manual amplitude of this signal is about 10 vdc frequency is 1 hz and the pulse width is variable 350 to 950 milliseconds in steps of 50 msec.