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Rosewood paper grain — description and returns beneath the overlapping buy card.
the 097720 (EX5-U21) is the direct technical successor and is interchangeable with earlier EX-U series models of the same capacity rating
ensuring reliable signal transmission to the boiler control modules
Technical specifications confirm compatibility with various sealed combustion systems across the Lochinvar and A
) contact configuration
While physically compatible with the piping sizes
Trane SWT3971 Pressure Switch 340155-7026 the 097720 (EX5-U21) is theThe Trane SWT3971 Pressure Switch is an essential safety component engineered for induction monitoring in high efficiency Trane and American Standard furnaces. This SPST pressure switch (Single Pole Single Throw) is factory calibrated at a 1. 00" W. C. set point to ensure the inducer motor maintains the precise vacuum required for safe combustion and flue gas venting. As a 28VA pilot duty component, the SWT03971 effectively prevents the ignition cycle