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protecting the compressor from head pressure spikes and extending the service life of the outdoor section
this thermal expansion tank comes with a factory pre-charge of 20 PSI
The normally open (NO) contact configuration provides a reliable "proof of flow" signal
providing reliable saturation for high-volume cooling units
It comes with 18-inch leads and should be wired according to the original 120V control circuit specifications for your zone valve or damper system
Johnson Controls AFS-460-DSS Sensing Switch Els PW 17895 protecting the compressor from headFor contractors managing airflow verification in sensitive HVAC systems, the Johnson Controls AFS 460 DSS Sensing Switch provides the redundancy and manual intervention required for critical safety protocols. This industrial grade air pressure sensing switch is designed to monitor positive, negative, or differential air pressure within a range of 1. 25" 0. 06" to 12" w. c. Featuring two SPST normally closed contact arrangements, this dual switch