Reznor 197031 Pressure Switch 321894-708 Robust Construction: Equipped with an

Robust Construction: Equipped with an anodized aluminum manifold and an integral 80-100 micron filter to prevent debris interference

replacing a brittle or carbon-tracked 88A12 wire often restores system reliability without requiring a full board replacement

The pre-installed 18-inch leads provide sufficient length for routing through conduit or junction boxes

Common Questions What is the difference between the LF777SI and S777 models

Reznor 197031 Pressure Switch 321894-708 Robust Construction: Equipped with anWhen you are dealing with thin air at elevations above 6000 feet, standard combustion air monitoring just does not cut it. The Reznor 197031 Pressure Switch is the specific high altitude solution required to maintain precise safety setpoints on your Reznor unit heater. This OEM draft switch is factory calibrated to 0. 35" W. C.identifiable by its distinct purple labelto ensure the inducer motor is pulling the correct negative pressure for safe