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This HSI retrofit kit is a legacy-standard component for models manufactured prior to 2009
this unit requires a dedicated 480V control signal to engage the coil
60" WC (Water Column) setpoint
Includes all necessary components for field retrofit or routine pneumatic valve maintenance
typically rated for saturated steam up to 15 PSI or hot water up to 250°F
EWC Controls ND-RSD-8X30 Damper Els PW 29614 This HSI retrofit kit isAs a direct replacement for the legacy ZoneFirst ZDB 8X30, the EWC Controls ND RSD 8X30 is a professional grade motorized rectangular zone damper engineered for high static residential and light commercial HVAC systems. This 8" High x 30" Wide parallel blade unit features a 24Vac synchronous motor mounted on the 30" dimension to ensure high torque and reliable operation. Designed for power open, spring return closed applications, it provides a fail
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