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It is designed to close the circuit automatically once the sensed temperature falls below the reset differential
it ensures seamless compatibility when servicing older equipment
Designed as a direct replacement for the Bard 8406-046
specifically serving as a draft booster blower motor or condenser fan motor
a separate pilot orifice or assembly matching the specific BTU requirements of the furnace must be used
Trane SWT2979 Pressure Switch 321894-709 It is designed to closeThe 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