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The Series BYDS Bypass Damper Switch is designed to control motorized bypass dampers. As individual zone dampers open and close, the system static pressure will rise and fall. In order to maintain proper airflow and static pressure through the HVAC system, a bypass system incorporating a floating type motorized damper and a static pressure control should be incorporated. A typical on/off pressure switch cannot operate in this application due to the high cycle rate that would result, eventually causing contact burnout. The BYDS static pressure control is equipped with a solid-state switching and timing circuit to enhance operation and improve long-term reliability in this demanding application.
Service: Air and non-combustible, compatible gases.
Materials: Diaphragm Material: silicone; Housing Material: switch body: PA 6.6 and POM; Cover: polystyrene.
Temperature Limits: Process and ambient temperature from 32 to 122 °F (0 to 50 °C).
Pressure Limits: Max. Operating Pressure: 40" w.c. (10 kPa) for all pressure ranges.
Switch Type: Single-pole double-throw (SPDT).
Electrical Rating: 1A @ 24 VAC.
Electrical Connections: Screw terminal block. M20 x 1.5 with cable strain relief or 1/2" NPT connection.
Process Connections: 5/16" (7.94 mm) outside diameter tubing, 1/4" (6.0 mm) inside diameter tubing.
Mounting Orientation: Vertically, with pressure connections pointing downwards.
Enclosure Rating: NEMA 13 (IP54).
Mechanical Working Life: Over 10
6switching operations.
Weight: 5.6 oz (160 g).
Agency Approvals: CE, RoHS.
