AA-A2 Air Pressure Switch by Dungs
Application
Differential pressure monitoring in firing, ventilation and air-conditioning systems. The AA-A2… can be used as a pressure, vacuum or differential pressure switch for air and non-aggressive gases. Not suitable for natural gas, propane, butane and other combustable gases.
Description
AA-A2… differential pressure switches are field adjustable, compact pressure switches for automatic burner controls. Available with hose or NPT threaded connections.
AA-A2-4… differential pressure switches are suitable for making and/or breaking a circuit when the medium pressure changes relative to the set point. AA-A2-4… versions feature hose connections.
AA-A2-6… differential pressure switches are suitable for making and/or breaking a circuit when the medium pressure changes relative to the set point. AA-A2-6… versions feature NPT threaded connections that also include a test button in the lower housing.
Application
Differential pressure monitoring in firing, ventilation and air-conditioning systems. The AA-A2… can be used as a pressure, vacuum or differential pressure switch for air and non-aggressive gases. Not suitable for natural gas, propane, butane and other combustable gases.
Codes and Standards
This product is recommended for installations covered by but not limited to NFPA 37, NFPA 85, NFPA 86, ANSI Z83.4/CSA 3.7, ANSI Z83.18/ CSA 4.9, ANSI Z21.13, CSD-1, UL 795, CSA B149.1, CSA B149.3 and CSA B149.6.