EWC® Ultra-Zone™ PS4 Static Pressure Switch Kit

The PS4 is normally factory-mounted to an ND or URD-style damper to create a model EBD bypass damper. The PS4 can also be retro fitted to a model ND or URD damper to create a model EBD in the field. The completed assembly (EBD) can sense the total static pressure of the HVAC system and modulate, to control the static pressure of the HVAC system during zoned operations.

EWC® Ultra-Zone™ Static Pressure Switch Kit

• (1) pressure diaphragm, (2) 1/4 in OD barb connectors, (1) wiring harness, (1) mounting bracket, (1) bolt/washer, (2) pitot tubes, (1) 16 ft L pressure tubing, (2) wire connectors and (6) 1/4 in screws included

• Submittal http://www.ewccontrols.com/acrobat/090377a0063.pdf