Io Hvac Controls SD-1212 Auxiliary Zone Damper 12x12

Product Description

The IO HVAC CONTROLS SD-1212 is a 12-inch by 12-inch auxiliary zone damper designed to control airflow in residential and light commercial zoned HVAC systems. It installs in rectangular ductwork and works in conjunction with a zone control board to open and close airflow paths based on zone demand. The damper is a motorized auxiliary unit, meaning it supplements primary dampers or serves secondary zones in multi-zone configurations. Licensed HVAC technicians install this component as part of a complete zoning system retrofit or new installation.

The SD-1212 is suited for forced-air zoning applications where a 12-inch by 12-inch duct opening is present. It fits rectangular trunk lines, branch runs, or plenums of the corresponding duct size. Typical installations include residential split systems and packaged units where multiple temperature zones are required. The damper integrates with standard zone control panels and low-voltage actuator wiring schemes common in residential zoning work.

Key Features

• 12-inch by 12-inch duct opening for direct rectangular duct installation
• Auxiliary zone configuration suitable for multi-zone duct systems
• Low-voltage actuator control compatible with standard zone control panels
• Compact package profile: 13 inches wide, 6.75 inches tall, 18.75 inches deep
• 7-pound unit weight for manageable single-tech installation in tight duct spaces

Compatibility

Designed as an OEM-style auxiliary zone damper replacement or new-install component for rectangular duct systems requiring a 12-inch by 12-inch damper opening in residential or light commercial zoned HVAC applications.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with low-voltage zoning systems. Shut down the air handler or furnace and disconnect power at the disconnect or breaker before installing or wiring the damper. Follow the zone control board manufacturer's low-voltage wiring diagram when connecting the actuator leads. Verify duct dimensions and confirm the opening matches the 12-inch by 12-inch specification before securing the damper in place.