York S1-025-27792-707 Limit Switch Els PW 17895 Built with a 1°F differential
Baker’s notes & crumb story
Description
York S1 025 27792 707 Limit Switch Els PW 17895 Built with a 1°F differential Built with a 1°F differential and a 4°F deadband between heating and cooling cycles which maintains system static pressure and optimizes heat transfer efficiency