preventing dangerous carbon monoxide leaks and optimizing pressure switch performance

Safety Integrated: Includes automatic reset thermal overload protection to prevent motor failure during restrictive duct conditions or high-ambient operation

The S20 series utilizes a zero-differential design

but a standard wrench is needed to unscrew the cartridge from the valve body once the system is depressurized

leading to thermal failure of the Class F insulation

Tjernlund Products 950-8804 Control Board 322055-301 preventing dangerous carbon monoxide leaksThe Tjernlund Products 950 8804 Control Board is the heavy duty UC1 universal control replacement engineered specifically for Tjernlund power venters and draft inducers. As a direct upgrade for the legacy 950 8801 board, this 115VAC circuit board is designed to interface with almost any burner control circuit, providing critical safety interlocks for oil and gas fired equipment. This power venter control board features adjustable pre purge and post