Carrier HH12ZZ185 Limit Switch 321702-401 the AH23A020 ensures positive shut-off
Baker’s notes & crumb story
Description
Carrier HH12ZZ185 Limit Switch 321702 401 the AH23A020 ensures positive shut off the AH23A020 ensures positive shut off in demand heavy environments like fan coils The equalizer line must be connected to the suction line near the sensing bulb to ensure the valve references the correct pressure for superheat adjustment