Io Hvac Controls SD-1816 Auxiliary Zone Damper 18x16

Product Description

The IO HVAC CONTROLS SD-1816 is an auxiliary zone damper designed for use in ducted HVAC zoning systems. Zone dampers regulate airflow through individual zones by opening and closing on demand from a zone control panel or thermostat signal. The SD-1816 is sized for an 18-inch by 16-inch duct opening and ships at 9 pounds. With a packaged depth of 24 inches, the unit accommodates standard rectangular duct installations common in residential and light commercial applications. Licensed HVAC technicians and sheet metal contractors are the typical installers for this type of component.

Auxiliary zone dampers like the SD-1816 are used in multi-zone forced-air systems where independent temperature control is required for different areas of a building. The damper is placed within the supply duct serving a specific zone and actuates in response to zone controller commands. This configuration is common in residential split systems and packaged units serving two or more zones, as well as light commercial buildings where load balancing across zones is necessary to maintain comfort and efficiency.

Key Features

• 18-inch by 16-inch duct opening fits standard rectangular supply duct sizes
• Auxiliary damper design integrates with existing zone control panels and thermostats
• Packaged at 9 pounds for manageable handling during installation
• 24-inch depth accommodates in-duct placement in typical residential and light commercial duct runs
• Suitable for multi-zone forced-air system configurations

Compatibility

Designed as an OEM-style auxiliary zone damper replacement or addition for ducted forced-air HVAC zoning systems using standard 18-inch by 16-inch rectangular duct openings.

Installation Notes

Installation should be performed by a licensed HVAC technician or qualified sheet metal contractor. Shut down the air handler and disconnect power to the system before installing or wiring the damper. The damper must be wired to a compatible zone control panel per the control panel manufacturer's low-voltage wiring diagram and in accordance with applicable local mechanical and electrical codes. Confirm duct dimensions and airflow direction before securing the damper in place.