Aprilaire 63 Modulating Control 318973-401 This valve assembly is frequently
Baker’s notes & crumb story
Description
Aprilaire 63 Modulating Control 318973 401 This valve assembly is frequently This valve assembly is frequently utilized in fan coil units and small reheats where tight shut off and high rangeability are required to maintain system efficiency and stabilize discharge temperatures Always verify the 5VDC input reference at the plug before condemning the part