High Duct Static Pressure Switch

Bypass damper switch which applies to ventilation duct monitoring heat exchanger frost protection and industrial cooling circuits.

High duct static pressure switch.

Install a duct pressure switch from grainger to help your hvac system do its job. The model 1900 5 mr measures static pressure only not differential pressure. 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. Switch contacts are spdt with solder type connections.

An air switch senses positive negative or differential air pressure and actuates an internal switch. 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. 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. Kele is the leading supplier of building automation products. The switch must be manually reset before the system can start again.

The duct pressure sensors in turn send signals to crank the air handler even faster to get back up to normal operation. Order the a 399 duct pressure kit separately.