Description
Add professional-grade zoning control to Rheem®, Ruud®, and EcoNet® communicating HVAC systems with the iO HVAC Controls RRD-XX 3-Wire Retro Damper™ — a purpose-built motorized round damper engineered specifically for compatibility with Rheem and Ruud EcoNet zone control panels using their native 3-wire control protocol. Designed for HVAC contractors performing new zoning installations, service replacements, and retrofit upgrades, the RRD-XX eliminates guesswork and wiring workarounds by delivering a true drop-in, factory-compatible damper solution.
Unlike universal dampers that require complex rewiring or adapter boards, the RRD-XX uses the native 3-wire control sequence (Common, Close, Open) recognized by Rheem, Ruud, and EcoNet zone panels — making installation and commissioning fast, clean, and reliable. Each damper features an 18-gauge steel blade, 5/8″ solid aluminum shaft, and airtight blade seals for durable, whisper-quiet operation and maximum zone isolation, ensuring conditioned air is delivered precisely where the thermostat calls for it.
The factory-installed 24V actuator delivers 18 lb-in of torque with a 35-second full stroke timing, providing smooth, positive damper positioning across all standard round duct sizes. A built-in minimum position adjustment allows technicians to fine-tune bleed airflow for pressure relief and static pressure management — a critical feature for preventing system short-cycling, protecting compressor and blower components, and reducing duct noise in high-static zoning applications.
Available in six standard round duct sizes — 5″, 6″, 7″, 8″, 9″, and 10″ — the RRD-XX covers the full range of typical residential and light commercial branch ducts, making it the ideal specification for contractors who want a single, proven retrofit damper line for every Rheem, Ruud, and EcoNet zoning job.
Features
- Native Rheem®, Ruud® & EcoNet® Compatibility — Engineered to match the proprietary 3-wire protocol used by Rheem and Ruud EcoNet communicating zone control systems — no adapters, no rewiring, no protocol translation required
- True 3-Wire Control (Common / Close / Open) — Clean, simple wiring terminals (1-Comm, 2-Close, 3-Open) streamline installation and reduce commissioning errors in the field
- Retrofit-Focused Retro Damper™ Design — Purpose-built to install into existing round ducts during zoning retrofits or service replacement jobs, minimizing duct modification and labor time
- Six Standard Round Sizes (5″–10″) — One damper family covers virtually every branch duct size in residential and light commercial zoning systems, simplifying truck stock and job-site logistics
- Rugged 18-Gauge Steel Blade Construction — Heavy-duty blade material resists warping and corrosion, delivering long service life even in demanding ducted environments
- 5/8″ Solid Aluminum Shaft — Precision-machined, corrosion-resistant shaft supports reliable, long-term actuator engagement with no play or drift
- Airtight Blade Seals — Premium seals minimize leakage in the closed position, maximizing zone isolation and delivering measurable comfort and efficiency gains
- 18 lb-in Actuator Torque — Strong torque output ensures positive damper movement against typical static pressures in residential and light commercial ducting
- Fast 35-Second Full Stroke Timing — Quick, controlled open/close cycle delivers responsive zoning performance while eliminating blade seal damage from abrupt actuation
- Built-In Minimum Position Adjustment — Field-adjustable bleed setting manages static pressure and airflow in small or closed zones, preventing equipment short-cycling and duct noise
- 24V / 2.5 VA Low-Voltage Operation — Minimal current draw from the zone panel supports multi-damper installations without transformer upgrades
- Retrofit & New-Construction Ready — Retro Damper™ design installs into existing round ducts for service replacements or serves as a first-line specification for new zoning builds
Applications
- Rheem® EcoNet® zoning systems — new construction, retrofit, and replacement dampers
- Ruud® EcoNet® zoning systems — matched-brand zoning jobs
- EcoNet®-compatible communicating platforms — any system using the Rheem/Ruud 3-wire zoning protocol
- Zoning retrofit projects — upgrading existing Rheem/Ruud EcoNet-equipped homes with true zoning control
- Multi-zone residential homes — 2-zone to multi-zone builds with round branch ductwork
- Light commercial zoning — small offices, retail suites, and multi-use spaces using EcoNet communicating platforms
- Service replacements — swapping failed OEM dampers without replacing the zone panel
- Custom and luxury home builds — where Rheem or Ruud equipment is specified with integrated zoning
- Multi-story home comfort zoning — upstairs/downstairs temperature separation with communicating thermostats
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