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General| Type | Electronic Controller |
|---|---|
| Input Voltage | 24 VAC |
| Display | LCD |
| Number of Outputs | 2 |
| Housing Material | Plastic |
| Input | Thermistor |
| Output | Relay |
| Weight | 0.5 lbs |
Practical advice and programming tips for T775 controllers.
Lists sensors, actuators, and other components compatible with T775 controllers.
Highlights key features of various T775 controller models.
Explains integral action for droop reduction and derivative action for response speed.
Defines and differentiates differential (relays) and throttling range (modulating outputs).
Describes how to set an irreversible maximum setpoint value for safety.
Details programming for reset curves and setpoint offsets.
Controls loop water temperature for heat pumps with high/low temp alarms.
Manages sump water temperature in chiller systems, including freeze protection.
Regulates boiler water temperature using outside temperature and a reset curve.
Provides multistage boiler control based on discharge water temperature.
Controls duct pressure by adjusting fan speed via a VFD using pressure sensor input.
Calculates zone air setpoint based on outdoor temperature using a reset curve.
Details replacing a W973A Logic Panel with a T775M2030 controller.
Illustrates replacing a W964F Aquatrol Panel with a T775R controller.
Guides replacing an S984 Step Controller with a T775L and expansion module.
Guides replacing a W7100C controller with a T775L and expansion module.
Cross-references Johnson System 350 controls to T775 electronic replacements.
Cross-references Honeywell electromechanical controls to T775 electronic replacements.
Cross-references White Rodgers controls to T775 electronic replacements.
Cross-references Barber Colman controls to T775 electronic replacements.
Cross-references Ranco controls to T775 electronic replacements.
Cross-references Tekmar controls to T775 electronic replacements.
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