Io Hvac Controls RM-2818 Rectangular Zone Damper 28x18

Product Description

The IO HVAC CONTROLS RM-2818 is a rectangular zone damper sized at 28 x 18 inches and fitted with a 3-wire Belimo actuator rated at a 35-second stroke time. Zone dampers control airflow to individual zones in a ducted HVAC system, allowing independent temperature management of separate spaces. The Belimo actuator provides reliable, repeatable blade positioning with low power draw. This unit is sized for larger trunk or branch duct runs and is typically installed by licensed HVAC technicians as part of a zoning panel system. The 3-wire wiring configuration supports both power-open and power-close operation, which is standard in most residential and light commercial zoning setups.

The RM-2818 is suited for residential and light commercial zoned forced-air systems where large rectangular duct sections serve multiple rooms or open floor plans. It fits into new-construction and retrofit duct systems where precise zone isolation is required. HVAC contractors installing multi-zone control systems will find this damper appropriate for high-volume supply or return trunk lines. The 35-second actuator timing is compatible with most zone control panels that require standard actuator cycle speeds.

Key Features

• 28 x 18 inch rectangular damper body sized for large duct runs
• Integrated Belimo actuator with 35-second stroke time for smooth, controlled blade movement
• 3-wire actuator wiring supports power-open and power-close operation
• Designed for use in multi-zone forced-air ducted HVAC systems
• Compatible with standard residential and light commercial zone control panels

Compatibility

Designed as an OEM-style replacement or new-installation zone damper for residential and light commercial rectangular duct zoning systems using standard 3-wire Belimo-style actuators.

Installation Notes

Installation should be performed by a licensed HVAC technician. Power down the air handler and zone control panel before installing or wiring the damper. Confirm duct opening dimensions match the damper frame before securing to avoid air bypass. Wire the actuator according to the zone panel manufacturer's wiring diagram and verify blade operation through a full open-close cycle before returning the system to service.