Trane BAYHALT249 Pressure Kit 319847-401 while it is primarily a

while it is primarily a communicating thermostat

Its purple dot identification helps prevent misapplication in the field

technicians can perform field offsets if required by the building automation system (BAS) interface

and R-502**

Trane BAYHALT249 Pressure Kit 319847-401 while it is primarily aThe Trane BAYHALT249 High Altitude Pressure Kit is a field installed safety component designed for 80% gas furnaces operating at elevations exceeding 4,000 feet. At higher altitudes, lower air density results in insufficient negative pressure from the induced draft blower, which can lead to nuisance lockouts and improper combustion. This OEM pressure switch kit replaces the sea level calibrated switch with a component specifically tuned for thin air