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Schneider Electric TA-158 Series, TB-158 Series Digital, 3-Wire Floating Thermostat/Controller

Digital, 3-Wire Floating Thermostat/Controller
TA-158 Series, TB-158 Series

The T158 series microprocessor based thermostat/controller with digital display provides 3-wire floating, on/off control, or a combination of 3-wire floating and on/off control. This series controls a variety of two-pipe and four-pipe fan coil units, air handling units, and various heating and cooling applications. The microprocessor combines a proportional plus intergral control algorithm with advanced adaptive logic. This provides control without the need for tuning or calibration the control algorithm in the field.

• Heating and cooling outputs are individually configurable for 3-wire floating or on/off control in the normally open or normally closed modes.
• Line voltage continuous 3-speed fan control.
• Manual or automatic changeover.
• Remote setback capability from a time clock or facility management system.
• Time out feature. Drive signal stops after 3 mins (max) on.
• Fahrenheit or Celsius display capability.
• Built-in purge cycle assists the controller to determine if the controlling agent is providing heating or cooling.
• Microprocessor eliminates the necessity for tuning or calibration.
• Display can be calibrated to within ±5F degrees (2.5C degrees).

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Cat #Heat/Cool OutputsSystem SwitchesFan Control(d)Demand OutputRemote Sensor(e)Setback
Power input: 20 to 28 Vac, nominal 24 VA. Full wave device
Power consumption: 25 mA maximum at 24 Vac
Connections: Power: Up to 14 AWG wire
Control: Up to 14 AWG wire
Electrical: Thermostatic switch ratings: 10 VA @ 24 Vac
System switch rating: 10 VA @ 24 Vac
Control ranges: Display range: 32 to 99°F (0 to 37°C)
Proportional band: 2°F degrees (1.1°C degrees)
Changeover deadband: 3 F degrees (1.6 C degrees)
Setpoint adjustment range: 50 to 90°F (10 to 32°C)
Mechanical: Material: Rigid vinyl
Finish: Cool gray
Ambient temperature limits: Shipping and storage:-30 to 130°F (-34 to 55°C).
Operating: 32 to 130°F (0 to 55°C).
Humidity: Maximum 95% non-condensing
Locations: NEMA Type 1
Dimensions: 2-3/4 H x 4-1/2 W x 1-1/8 D inches (79 x 114 x 28 mm)
Agency Listing: UL/CUL Recognized, CE compliant
General Instructions: Refer to F-27041

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