T775R2001 Honeywell Temperature Controller

Overview

The Honeywell T775R2001 is a Series 2000 electronic stand-alone temperature controller designed for sophisticated commercial and agricultural HVAC applications. As a next-generation remote sensing control, it offers a specialized Reset option, allowing the setpoint to automatically adjust based on a second sensor input (such as outdoor temperature) to optimize energy efficiency. This model is engineered to provide precise on-off or analog control, replacing older mechanical controllers with a modernized interface and digital accuracy.

Features

• Easy-to-use graphical interface with a large, clear LCD display for simplified programming
• Internal 7-day time clock scheduler for energy-saving setback and disable options
• Four SPDT relay outputs providing flexible control for multiple stages or loads
• Two floating outputs (note: each floating output eliminates two SPDT relays)
• Reset control functionality to adjust setpoints based on ambient conditions
• Two 50021579-001 standard temperature sensors included
• Non-volatile EEPROM memory to protect programmed values during power loss
• Configurable minimum off-time to protect equipment from short-cycling

Specifications

• Power Supply: 24 Vac, 120 Vac, or 240 Vac; 50/60 Hz
• Setpoint Temperature Range: -40 to 248 degrees Fahrenheit (-40 to 120 degrees Celsius)
• Operating Ambient Temperature: -40 to 140 degrees Fahrenheit @ 60 Hz
• Relay Contact Ratings: 10.0A resistive at 24 Vac; 1/2 hp at 120/240 Vac
• Sensor Element: 1097 Ohms PTC at 77 degrees Fahrenheit
• Accuracy: +/- 1 degree Fahrenheit at 77 degrees Fahrenheit
• Enclosure: NEMA 1 rated for indoor use
• Dimensions: 8-5/32 in. H x 4-13/32 in. W x 2-15/16 in. D
• Maximum Sensor Distance: Up to 1,000 feet

Applications

• Boiler control systems requiring outdoor temperature reset
• Multi-stage chiller and cooling tower management
• Commercial HVAC systems for space, return air, or discharge air control
• Agricultural facilities needing precise climate and environmental monitoring
• Industrial process heating and cooling with remote sensing requirements
• Control of floating actuators for valves and dampers