T775M2048 Honeywell Temperature Controller

Overview

The Honeywell T775M2048 is a Series 2000 electronic modulating temperature controller designed for sophisticated commercial and agricultural HVAC applications. As a standalone, multi-loop controller, it provides precise remote sensing and manages both switched and proportional outputs to various loads. It is engineered to replace legacy models like the T775E1015 and T775E1056, offering a modernized interface and integrated features that eliminate the need for separate modules.

Features

• Easy-to-use graphical interface with a large backlit LCD display and intuitive menu-driven programming
• Dual temperature sensor inputs supporting remote sensing up to 1,000 feet
• Two SPDT relay outputs and two independent analog modulating outputs
• Modulating outputs individually configurable for 0-10 Vdc, 2-10 Vdc, 4-20 mA, or Series 90
• Internal 7-day time clock scheduler for energy-saving night setback and output disable
• High/Low modulating limit control at Sensor B to protect equipment at Sensor A
• Configurable PI or PID control with adjustable integral and derivative times for pinpoint accuracy
• Non-volatile memory that retains all programmed settings after power loss
• Flexible mounting options including surface screw tabs or DIN rail installation

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
• Differential Temperature: Adjustable from 1 to 150 degrees Fahrenheit
• Relay Contact Ratings: 10A resistive at 24 Vac; 1/2 hp at 120/240 Vac
• Accuracy: +/- 1 degree Fahrenheit at 77 degrees Fahrenheit
• Enclosure: NEMA 1 rated (plenum rated plastic)
• Dimensions: 8-5/32 in. H x 4-13/32 in. W x 2-15/16 in. D
• Sensor Element: 1097 Ohms PTC (one 50021579-001 standard sensor included)

Applications

• Modulating control of dampers and valve actuators in complex HVAC systems
• Commercial and agricultural climate monitoring requiring dual-input sensing
• Discharge air temperature control with high or low limit protection
• Multi-stage heating and cooling plant management
• Industrial tank and process temperature regulation
• Boiler and chiller systems requiring outdoor reset or specific staging logic