Ewc Controls END-22X8 Nd Motorized Damper 22x8 in

Product Description

The EWC CONTROLS END-22X8 is a rectangular motorized zone damper designed for zoned HVAC duct systems in residential and light commercial applications. Operating on 24 volts, this ND-series damper controls airflow through a 22 x 8 inch rectangular duct opening and is actuated by a side-mounted motor with a 3-wire connection. An onboard LED indicator allows technicians to confirm damper position and operation during installation and checkout without additional test equipment. Nylon bushings reduce motor and blade noise during cycling, contributing to quieter system operation and reducing wear over time.

The END-22X8 is suited for forced-air zoning systems where individual zones require independent airflow control. It is typically installed in rectangular supply or return ducts as part of a multi-zone HVAC setup using a compatible zone control panel. The damper is appropriate for residential new construction and retrofit zoning projects where duct dimensions match the 22 x 8 inch opening. Licensed HVAC technicians install this damper as part of a complete zoning system.

Key Features

• 24-volt operation compatible with standard zone control panels
• LED indicator for visual confirmation of damper position during commissioning
• Side-mounted motor with 3-wire connection for straightforward wiring
• Nylon bushings for quieter operation and extended motor life
• Rectangular form factor fits 22 x 8 inch duct openings
• Sturdier frame construction for faster and more secure duct installation

Compatibility

Designed as an OEM-style motorized zone damper for rectangular duct systems requiring a 22 x 8 inch damper with 24-volt actuation and 3-wire motor wiring.

Installation Notes

This damper is installed by licensed HVAC technicians as part of a zoned forced-air system. Before installation, shut down the air handler and de-energize the zone control panel at the disconnect or breaker. Secure the damper firmly in the duct using sheet metal screws through the frame, and verify low-voltage wiring connections to the zone panel match the 3-wire motor configuration per the zone controller manufacturer wiring diagram. Confirm LED operation during system startup to validate damper actuation before closing up the duct.