Ewc Controls END20X14-MA15S Motorized Zone Damper 14x20

Product Description

The EWC CONTROLS END20X14-MA15S is a motorized zone damper designed for HVAC zoning applications in residential and light commercial ducted air systems. Sized at 14 x 20 inches with a rectangular aluminum frame, this damper operates on 24 VAC single-phase power at 50/60 Hz and draws 1.5 amps. It features a 3-wire power open/power closed motor with a manual gear release and onboard LEDs that allow installers to verify damper position during checkout without additional test equipment. A 97 percent leak-proof rating and overlapping blades deliver accurate zone control with minimal conditioned air bypass.

This damper is suited for residential and commercial forced-air zoning systems where individual zone control is required. It is compatible with network zoning systems and heat pump applications, including systems with emergency heat configurations. The motor is always mounted on the second dimension specified, which is the 20-inch dimension on this model. Nylon bushings reduce operational noise, a feature that supports long-term homeowner satisfaction and reduces service callbacks. The quick-connecting terminal block eliminates wire nuts and simplifies field wiring during installation.

Key Features

• 3-wire power open/power closed operation with manual gear release for field override
• Onboard LEDs provide visual damper position confirmation and fail-safe diagnostics
• 97 percent leak-proof rating with overlapping blades for accurate zone air control
• Nylon bushings reduce operating noise for quieter system performance
• Heat pump compatible with network zoning support
• Quick-connecting terminal block eliminates wire nuts and speeds wiring
• UL Listed motor; manufactured in the USA

Compatibility

Designed for use with HVAC zoning systems requiring 24 VAC motorized dampers, including heat pump systems and network zoning configurations. Compatible with the EWC Ultra-Zone zoning system. Motor is always mounted on the second dimension specified.

Installation Notes

Installation should be performed by a licensed HVAC technician following applicable mechanical codes. Shut down the air handler and de-energize the 24 VAC control circuit before wiring the damper. Confirm the motor orientation based on the second-specified dimension before securing the damper in the duct. Use the onboard LED indicators to verify power open and power closed operation before closing up the duct.

Technical Specifications

• Size: 14 x 20 inches
• Voltage: 24 VAC
• Amperage: 1.5 amps
• Cycle/Hertz: 50/60 Hz
• Phase: Single
• Damper Type: Zone
• Shape: Rectangle
• Ambient Temperature Range: 0 degrees F to 140 degrees F
• Maximum Temperature: 185 degrees F
• Material/Composition: Aluminum
• Color: Silver
• Mounting Type: Face plate
• Heat pump Compatible: Yes
• Network Zoning: Yes
• Approvals: UL Listed
• Country of Origin: USA
• Package Length: 24 inches
• Package Width: 22 inches
• Package Height: 7 inches
• Weight: 8.9 pounds

Standard Information

• Brand: EWC CONTROLS
• Manufacturer Part Number: END20X14-MA15S