Product Overview

PECO AUTOMATION AND CONTROLS

T158 PROPORTIONAL THERMOSTAT

SMART ENER GY MANAG EMENT

HIGHLIGHTS

• Microprocessor Control

• Local or Remote Sensing

• On/Off Temperature Control Output

• Three-Wire Floating Control Output (TB158)

• Three Speed Fan Switching

• 2-Pipe/4-Pipe Configuration

• Manual or Auto Changeover

• Setback Capability

• Staged Heat (TB158)

• Operates at 50 or 60 Hz

• Fahrenheit or Celsius Display

Digital Controller for Accurate Zone Comfort

The T158 microprocessor-controlled thermostat is a stand-alone digital

controller that supplies 24 VAC output control for valves, dampers, relays and

three-wire floating valves. The use of an advanced proportional integral (PI)

algorithm allows precise control of zone comfort under varying operational and

environmental conditions.

Easy-to-Use Digital Display

The digital display, with easy-to-use adjustment buttons, allows convenient

access to current zone temperature, setpoint temperature and operating

mode.

Adjustable for Application Requirements

Optional pipe sensor changeover, setback and staged heat functions are

available, on selected models, for adapting to application requirements.

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PECO AUTOMATION AND CONTROLS T15 8 P R O P O RT I O N A L THERMOSTAT SMART ENERGY M A N A G E M E N T HIGHLIGHTS Digital Controller for Accurate Zone Comfort • Microprocessor Control • Local or Remote Sensing • On/Off Temperature Control Output • Three-Wire Floating Control Output (TB158) • Three Speed Fan Switching • 2-Pipe/4-Pipe Configuration • Manual or Auto Changeover • Setback Capability • Staged Heat (TB158) • Operates at 50 or 60 Hz • Fahrenheit or Celsius Display The T158 microprocessor-contro
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T158 PROPORTIONAL THERMOSTAT TECHNICAL SPECIFICATIONS Temperature Range Operating Differential Proportional Band Maximum Ambient Load Connections Mounting Agency Approvals 50 to 90°F / 10 to 32°C 1°F / 0.5°C 2°F / 1°C 130°F / 54°C Terminal blocks Installs on a standard 2" x 4" (50.8mm x 101.