Resideo zd22x18tz/u Parallel Blade Zone Damper 22x18 in

Product Description

The RESIDEO zd22x18tz/u is a rectangular parallel blade zone damper designed to control circulating air in ducted HVAC systems. Measuring 22 inches in length by 18 inches in height with a 4-inch width, this damper is constructed from aluminum blades and body material for durability in air-handling applications. It operates on a 24-volt electric actuator housed in molded plastic, consuming 8 VA. The damper functions as a power-close, spring-open design, meaning it defaults to the open position when power is removed. Leakage is rated at less than 1% at 0.5 inches water column. Licensed HVAC technicians and zoning system installers are the primary installers of this component.

This damper is sized for rectangular duct openings and is well suited for residential and light commercial zoning applications. It is typically used with TrueZONE and other electronic zoning control systems to direct conditioned air to individual zones based on thermostat demand. The spring-open fail-safe action makes it appropriate for normally-open zone configurations where airflow must default to open on a power loss or control signal interruption.

Key Features

• Power-close, spring-open operation for normally-open zone configurations
• 24-volt electric actuator with 8 VA power consumption
• Actuator torque rated at 71 inch-ounces for reliable blade movement
• Aluminum blade and damper body construction for lightweight durability
• Leakage less than 1% at 0.5 inches water column for tight air shutoff
• Position indicator includes damper position range stops and LED indication light for open and close status

Compatibility

Designed for use with TrueZONE and other electronic zoning control systems requiring a 24-volt normally-open parallel blade damper in a 22 x 18 inch rectangular duct configuration.

Installation Notes

Installation should be performed by a licensed HVAC technician familiar with low-voltage control wiring and duct zoning systems. Shut down the air handling system and de-energize the zoning control panel before mounting or wiring the damper. Secure the damper in the duct with sheet metal screws and connect the 24-volt control wires according to the zoning panel wiring diagram. Follow all applicable local mechanical codes and the manufacturer installation instructions for proper damper orientation and actuator positioning.

Technical Specifications

• Duct Shape: Rectangular
• Damper Type: Zone
• Application: Parallel Blade Damper
• Damper Material: Aluminum
• Blade Material: Aluminum
• Actuator Housing Material: Molded Plastic
• Activation: Electric
• Actuator Voltage: 24 volts
• Actuator Power Consumption: 8 VA
• Actuator Torque: 71 inch-ounces
• Leakage: Less than 1% at 0.5 inches water column
• Product Length: 22 inches
• Product Height: 18 inches
• Product Width: 4 inches
• Position Indicator: Damper position range stops and LED indication light for open and close
• Warranty: 5 years

Standard Information

• Brand: RESIDEO
• Manufacturer Part Number: zd22x18tz/u