Williams 1403822 Direct Vent Furnace 30067439-890 Precise Timing: Features specific pre-purge

Precise Timing: Features specific pre-purge and post-purge cycles to ensure safe combustion gas evacuation

The flow arrow must point toward the expansion device

PWM via 1500 Ohm

this Sensus orange spring is compatible with natural gas

Williams 1403822 Direct Vent Furnace 30067439-890 Precise Timing: Features specific pre-purgeThe Williams 1403822 Direct Vent Furnace is a high efficiency natural gas wall heater designed for compact residential and commercial heating applications. Delivering 14,000 BTU hr, this unit is the engineered direct replacement for the 1403612, ensuring seamless HVAC retrofit compatibility with existing venting configurations. Utilizing a sealed combustion system, this direct vent heater draws combustion air from outdoors, making it ideal for