The Ultra-Zone Smart By-Pass Damper (SBI) captures the total static pressure of the VAC system during a non-zoned mode, and modulates 1o maintain that same static pressure during any zoned mode, As individual zone dampers open and close, the VIVACE system static will fluctuate. In order to maintain the rue static pressure of the VAC system during zoned modes, the SBD will sense the current state pressure in the duct system and modulate to maintain the designed operating static pressure of the VAC system.
