High Duct Static Pressure Switch

The model 1900 5 mr measures static pressure only not differential pressure.

High duct static pressure switch.

Switch contacts are spdt with solder type connections. Because the fire dampers are closed when the air handler ramps up the duct pressure upstream of the fire dampers will increase to a point where a high static pressure switch will cut power to the vfd variable frequency drive and send a signal to the ddc direct digital control. Bypass damper switch which applies to ventilation duct monitoring heat exchanger frost protection and industrial cooling circuits. Install a duct pressure switch from grainger to help your hvac system do its job.

Kele is the leading supplier of building automation products. Kele carries duct static pressure sensors and pressure accessories to fit your specifications. An air switch senses positive negative or differential air pressure and actuates an internal switch. Install a duct pressure switch from grainger to help your hvac system do its job.

With over 1 8 million parts in stock kele makes it easy to avoid project delays. An air switch senses positive negative or differential air pressure and actuates an internal switch. Duct pressure switches automatically start and stop auxiliary devices like electronic air cleaners duct heaters humidifiers exhaust fans and duct booster fans. Order the a 399 duct pressure kit separately.

The dwyer model 1900 5 mr manual reset pressure switch is designed to monitor duct static and shut down the blower when excess pressure occurs. The switch must be manually reset before the system can start again.