Three Stage Control - TVS
Phason TVS Ventilation Control

Three Stage Control - TVS

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Your Price: $430.00
Part Number: K7018TVS2
Availability: In Stock (1)

Phason TVS

Three Stage Control

Easy-to-use, automatic three-stage control

The Three Stage Control automatically controls the temperature in a room by operating two variable speed fans and a single-speed fan or heater.

Easy to use and program

The Three Stage Control comes with seven factory-configured operating programs you can easily reconfigure for your ideal situation. The easy-to-use keypad and menu system make the TVS one of the easiest controls to program. The controls advanced and powerful features are never more than a few keystrokes away.

Versatility and peace of mind

The TVS has a 30-foot temperature probe that monitors temperatures in a single zone. For more versatility, you can connect 4 temperature probes together and use 4-zone averaging. Temperature probes are available in 1, 6, 30, 75, or 150-foot lengths; you can extend them up to 500 feet using extension cable.

You can connect the TVS to an alarm siren or other external alarm system. Customizable alarm settings allow you to choose which alarm conditions you want to be notified about.


  • Automatic temperature-based control
  • Seven configurable operating programs
  • Two variable cooling stages for controlling fans
  • One general-purpose relays (heat or cool)
  • One alarm relay (for external alarm system or siren)
  • Customizable alarm settings
  • Minimum and maximum temperature logging
  • Four-digit LED display and individual stage LEDs
  • Error code display for troubleshooting
  • Ventilation disable option
  • Manual override/test mode
  • Power-failure settings protection
  • Three-second full-power-turn-on for minimizing fan ice-up
  • Overload protection fuses
  • Temperature probe; 30 feet, extendable to 500 feet
  • Easy System compatibleā€”use the optional TVS Updater to update firmware, or the TVS Saver to save or store settings and configuration
  • Rugged enclosure (corrosion resistant, water resistant, and fire retardant)
  • CSA approval
  • Limited warranty (two years)


120/230 VAC, 50/60 Hz

Variable Stages:

7.5 A at 120/230 VAC, general-purpose (resistive)
5 FLA at 120/230 VAC, PSC motor
1/3 HP at 120 VAC, 1/2 HP at 230 VAC, PSC motor

Variable Stage Fuses:

12 A, 250 VAC ABC-type ceramic

Relay Stage:

6 A at 120/230 VAC, general-purpose (resistive)
1/3 HP at 120 VAC, 1/2 HP at 230 VAC
360 W tungsten at 120 VAC

Relay Fuse:

12 A, 250 VAC ABC-type ceramic

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

Download User Manual

Older Version User Manual

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