York S1-024-32068-003 Motor 320735-701 Precision Control: Features a proportional
Baker’s notes & crumb story
Description
York S1 024 32068 003 Motor 320735 701 Precision Control: Features a proportional Precision Control: Features a proportional action mechanism that prevents short cycling and maintains tighter setpoint tolerances than standard on off thermostats Replacement is typically required if the first check valve fails a certified backflow test