Trane SWT2979 Pressure Switch 321142-301 Specifically engineered for HVAC high
Baker’s notes & crumb story
Description
Specifically engineered for HVAC high limit control
The 48HG500422 is the bearing bracket assembly itself
the unit includes 3/4" x 1/2" reducer bushings and two 1/2" pipe plugs for the straight-through or side outlet configurations
reducing labor time during upgrades
Trane SWT2979 Pressure Switch 321142-301 Specifically engineered for HVAC highThe Trane SWT2979 Pressure Switch is a critical safety component designed for precise draft monitoring in high efficiency Trane and American Standard furnaces. As a OEM dual pressure switch, this part is the direct replacement for legacy part numbers BA20149 and C342634P62. This 2 stage air pressure switch features a dual diaphragm configuration engineered to sense specific vacuum thresholds: the high side is rated to open at 1. 93" W. C. and close at