Io Hvac Controls RM-2820 Rectangular Zone Damper 28x20

Product Description

The IO HVAC CONTROLS RM-2820 is a rectangular zone damper sized at 28 x 20 inches, designed for ducted HVAC zoning systems. It ships with a 3-wire Belimo actuator that cycles in 35 seconds, giving zone controllers precise, reliable blade positioning in both residential and light commercial applications. Zone dampers like the RM-2820 modulate airflow to individual zones based on thermostat demand, allowing a single air handler or furnace to serve multiple independently controlled areas. Installation is typically performed by licensed HVAC technicians as part of a new zoning retrofit or system commissioning. The 3-wire actuator configuration supports spring-return or floating-point control depending on the connected zone panel.

The RM-2820 is suited for rectangular duct runs in forced-air zoning installations where large duct cross-sections are required. At 28 x 20 inches, this damper fits high-capacity trunk lines and main supply ducts common in larger residential homes and light commercial HVAC systems. The integrated Belimo actuator eliminates the need for a separate actuator order and ensures a factory-matched fit. Technicians installing multi-zone systems will find this damper appropriate for zone panels that output standard 24-volt control signals.

Key Features

• 28 x 20 inch rectangular blade fits large trunk and main supply duct runs
• Factory-installed Belimo actuator rated at a 35-second cycle time
• 3-wire actuator wiring supports spring-return or floating-point zone control
• Compatible with 24-volt zone control panels standard in residential and light commercial systems
• Ready-to-install configuration reduces field assembly time

Compatibility

Designed as an OEM-style rectangular zone damper for forced-air zoning systems using 24-volt control signals and Belimo-compatible zone panels. Specific system compatibility should be verified against the zone panel manufacturer's wiring and actuator requirements before installation.

Installation Notes

Installation should be performed by a licensed HVAC technician. Power down the air handler and zone control panel before wiring or mounting the damper. Follow the zone panel manufacturer's wiring diagram for 3-wire actuator connections. Ensure the duct opening dimensions match the damper frame size and that sufficient clearance exists for actuator rotation before securing the unit.