Dual Natural Ventilation Control

Model: NVC-DUAL
Dual Natural Ventilation Control

Dual Natural Ventilation Control

Model: NVC-DUAL
Effective control of two curtain machines

The Dual Natural Ventilation Control (NVC-DUAL) is a fully programmable controller that provides extensive flexibility for your curtain or awning control needs. The NVC-DUAL automatically controls the temperature in a room by operating two curtain machines or actuators according to your programmed settings.

Controlling a curtain machine
  • When the temperature is within the idle band of the set point, the NVC-DUAL maintains the curtain position.
  • When the temperature rises above the Idle band, the NVC-DUAL opens the curtain for the on duration, and then pauses for the off duration.
  • After each Off duration, the NVC-DUAL checks the temperature and then either opens or closes the curtain (for the preset duration), depending on the temperature.

See example See example

Optional rain override

The optional Phason Rain Sensor allows the NVC-DUAL to override normal operation when it is raining. When rainfall is detected, the control closes the configured curtains/actuators. After 15 minutes with no detected rainfall, the control resumes normal operation.

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NVC-DUAL | Dual Natural Ventilation Control

  • Automatic temperature-based control
    Range: -13 to 125°F (-25 to 51°C)
  • Programmable ON and OFF durations
    Range: 1 to 900 seconds (up to 15 minutes)
  • Programmable Idle band
    Range: 1.0 to 10.0°F (0.6 to 5.5°C)
  • Rain override (requires the optional rain sensor)
  • Programmable high and low temperature alarms
  • Alarm relay (for external alarm system)
  • 4 curtain relays: 2x open, 2x close
  • Programming and status LEDs
  • Manual override and test modes
  • 6-foot temperature sensor extendable to 500 feet
  • NEMA 4X enclosure (corrosion resistant, water resistant, and fire retardant)
  • cCSAus approval
  • Limited warranty (2 years)
  • Input
    85 to 264 VAC, 50/60 Hz
  • Open/close relays
    15 A at 120/230 VAC, general-purpose (resistive)
    1/2 HP at 120 VAC, 1 HP at 230 VAC
  • Alarm relay
    0.4 A at 125 VAC, 2.0 A at 30 VDC, resistive load
    0.2 A at 125 VAC, 1.0 A at 30 VDC, inductive load

Phason Rain Sensor

The Phason Rain Sensor detects rainfall and allows you to automatically close the curtain when it is raining.

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Manual Override Box

The Manual Override Box increases the load handling capability of your control's relays and provides an external disconnect.

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Temperature Sensors

Additional temperature sensors allow you to use 4-zone temperature averaging. Probes are available several lengths and can be extended up to 500 feet using extension cable.

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