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Aldes patentedZone Register Terminal (ZRT®)* are designed to introduce flexibility and demand control to central ventilation systems. The multi-zone ZRT® regulates ventilation without need for individual fans. Each ZRT-IL is a combination grille, register box, control damper, and optional flow regulator(s). This unique combination provides up to four different control schemes without the need for expensive pneumatic, electronic, or DDC control systems. To ensure the proper calibration of the damper assembly, do not exceed 1.0 in. w.g. (250 Pa) of differential pressure across the damper door.

When used in central systems, the ZRT-1 model provides on-off control for on-demand ventilation. This allows fan downsizing and promotesmore
Unit of Measure

Specifications

Type

 Zone Register Terminal

Construction

 Standard Housing

Series

 No Minimum Flow Control

Box Size

 10 x 10 in

Collar Diameter

 6 in

Voltage

 24 V

Frequency

 60 Hz

Maximum Flow Control

 With Maximum Flow Control

Minimum Airflow Regulation

 0

Maximum Airflow Regulation

 Regulated

Maximum Airflow Range

 45 to 370 cfm

Features

N/A

  • Provides on-off control for on-demand ventilation.
  • Combination low-flow continuous ventilation and on-demand high-flow spot ventilation using the same central fan system (ZRT-2).

Applications

N/A

  • Occupancy-based control systems for hotels, dormitories and high-rise residential.
  • Large and small commerical systems.
  • Intermittent ventilation for bathrooms and kitchens.
  • ALDES VentZone Systems.

Other Information

N/A

    Construction
    • Gasketed damper blade ensures a tight seal preventing unwanted air leakage and noise in closed position.
    • Constructed of 24-gauge galvanized steel housing for durability.
    • 24 VAC, 120 VAC, or 230 VAC actuator motor with spring return damper assembly.
    • Optional CAR3 constant airflow regulator.

    Warranty
    The entire unit is guaranteed for 3 years, from date of shipment, against all manufacturing defects, provided the material has been installed & operated per manufacturer’s instructions & under normal conditions. Warranty is limited to the repair or replacement of the material upon its return freight paid to our factory. This warranty is not transferable & limited to the original end user.

    Maintenance
    The ZRT-S needs no maintenance when used in normal conditions.

    Control
    The ZRT-IL is a normally-closed, spring-return damper mechanism which can be powered by any on-off control device(s). When powered, the control damper will fully open. Upon disconnecting the power, the ZRT integral spring will return the damper to the closed position. The included confirmation switch can be used to monitor ZRT status, or power other devices. Any on-off control device(s) will signal the damper to open fully, providing maximum ventilation control. Upon disconnecting the power, the ZRT integral spring will return the damper blade to its normally closed position.

    Optional Constant Airflow Regulator used to regulate airflows to constant levels in response to duct pressure. Use the CAR3 to control for both maximum and minimum flow rates.