Carrier 33ZCVAVTRM Controller 321894-709 What does this cap specifically

What does this cap specifically seal

chemically resistant material designed for dimensional stability under repeated heating cycles

Sampling tubes (DST series) and the D4S sensor head must be sourced separately based on the specific duct width of your application

Terminal Block Connection

and airborne contaminants

Carrier 33ZCVAVTRM Controller 321894-709 What does this cap specificallyThe Carrier 33ZCVAVTRM Duct Air Terminal Zone Controller is a high performance pressure independent (VAV) control solution engineered for single duct terminals. As a core component of the Carrier ComfortID system, this controller utilizes advanced Proportional Integral Derivative (PID) control algorithms to maintain precise airflow between 10% and 125% of nominal cfm. It is designed to mount directly onto VAV box damper shafts (3 8" to 1 2"), with an