Ewc Controls END-20X10 Nd Motorized Damper 20x10 in

Product Description

The EWC CONTROLS END-20X10 is a rectangular motorized zone damper designed for use in residential and light-commercial HVAC ductwork. Operating on 24 volts, this ND series damper controls airflow to individual zones as part of a zoning system, allowing precise temperature management across different areas of a structure. The damper ships with a side-mounted motor and connects via a 3-wire configuration. An integrated LED display lets the installing technician visually confirm damper position and operation during commissioning without additional test equipment. Nylon bushings in the shaft reduce operating noise, and the reinforced frame is engineered for faster, more secure duct installation.

This damper is sized at 20 inches by 10 inches with a rectangular profile, making it suitable for standard rectangular duct runs in forced-air zoning applications. It is intended for use in air quality and airflow control systems where independent zone control is required. Typical installations include residential multi-zone systems where separate thermostats govern individual rooms or floors. The 3-wire motor connection is compatible with standard zone control panel wiring configurations used in low-voltage HVAC zoning setups.

Key Features

• Integrated LED display allows visual confirmation of damper position during installation and checkout
• 24-volt operation compatible with standard low-voltage HVAC zoning controls
• 3-wire motor connection with side-mounted motor for straightforward panel wiring
• Nylon bushings reduce operating noise for quieter long-term performance
• Reinforced frame design speeds up duct installation and improves structural fit
• Rectangular profile sized at 20 inches by 10 inches for standard duct applications

Compatibility

Designed as an OEM-style replacement or new-installation motorized damper for rectangular duct zoning systems operating on 24-volt low-voltage control wiring.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with low-voltage zoning systems. De-energize the zone control panel and disconnect power to the air handler before installing or replacing any duct damper. Verify duct dimensions match the damper face size before securing the frame, and confirm wire connections to the zone panel follow the control board manufacturer's wiring diagram. Commissioning should include an LED status check at the damper to verify full open and full closed travel.

Technical Specifications

• Product Type: ND Motorized Damper
• Size: 20 inches x 10 inches
• Shape: Rectangle
• Voltage: 24 volts
• Wires to Motor: 3
• Motor Mount: Side
• Features: LED Light
• Application: Air Quality

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: END-20X10