Honeywell T775U2016 - User Manual

INSTALLATION INSTRUCTIONS
62-0255-05
E4436
T775U Series 2000 Electronic
Stand-Alone Controller
PRODUCT DESCRIPTION
The T775 electronic stand-alone controllers are the next
generation of universal controls capable of remote
sensing of temperature, humidity, pressure, etc. and
providing switched and proportional outputs to various
types of loads. A built-in time clock is standard.
The T775U controller allows a wide range of sensors to
be configured. Humidity, pressure, temperature, or any
0-5 Vdc, 0-10 Vdc, or 4-20 mA input is supported.
A Reset function is available where the Sensor B
temperature (e.g. outside temperature) is used to provide
reset control for Sensor A (e.g. humidity). For example,
as the outside temperature gets colder, the setpoint can
automatically be adjusted to prevent condensation.
IMPORTANT
The T775U is an operating control, not a limit or
safety control. If used in applications requiring
safety or limit controls, a separate safety or limit
control device is required.
Table 1. T775U Controller Configurations.
Controller
Model
a
a
The T775U includes a digital input for use with the disable or setback option.
Description Replaces
Output
Reset
SPDT
Relay
Outputs
Analog
(Mod)
Outputs
b
b
The modulating (analog) outputs may be 4-20 mA, 0-10 Vdc, 2-10 Vdc, or Series 90 selectable.
Sensor
Inputs
Nbr of
Sensors
Included Enclosure
T775U2006
Universal:
Humidity,
Pressure,
Temperature,
etc.
H775A1006
H775A1022
H775A1048
H775A1063
H775B1005
H775C1004
c
H775D1003
c
H775E1002
c
c
For the H775C1004, H775D1003, and H775E1002 model replacement, the T775U only partially replaces the function
of these devices. Check application for suitability.
Yes 2 2
2
d
d
For the sensor inputs, Sensor A can be 0-10Vdc, 4-20mA, or a standard temperature input. Sensor B is a standard
temperature sensor input only. Sensor B is used only for reset on the T775U2001.
None NEMA 1
T775U2016 N/A Yes 2 2
2
e
e
The T775U2016 can control Sensor A (universal) and Sensor B (temperature) independently, like other standard
T775 controllers.
None NEMA 1

Honeywell T775U2016 Specifications

General

Controller Type	Electronic
Input Voltage	24 VAC
Display	LCD
Output Voltage	24 VAC
Number of Outputs	4
Application	Heating, Ventilation, Air Conditioning
Input	Thermistor, 4-20mA
Output	Relay
Stages	Up to 4 stages
Control Output	On/Off
Mounting	Panel Mount
Humidity Range	10% to 90% RH (non-condensing)
Dimensions	4.5 x 3.5 x 1.5 inches
Weight	0.5 lbs

Summary

PRODUCT DESCRIPTION

Supported Sensors

Details on various sensor types like temperature, humidity, pressure, and CO2 supported by the controller.

Actuators and Accessories

Information on compatible actuators and available accessories for the T775U controller.

Product Changes

Notes on modifications introduced in later series of the T775U controller.

INSTALLATION AND WIRING

Controller Dimensions and Mounting

Physical dimensions, mounting details, and pre-installation considerations for the controller.

INSTALLATION AND SETUP Procedures

Step-by-step procedures for installing the controller, including initial setup.

WIRING GUIDELINES

Comprehensive instructions for wiring sensors, power, and outputs to the controller.

OPERATION AND PROGRAMMING

INTERFACE OVERVIEW

Guide to the controller's LCD display, keypad, and menu navigation.

SETUP and Configuration

Steps for configuring sensors, outputs, and relays, including initial setup.

PROGRAMMING OUTPUTS and SCHEDULING

Instructions for programming outputs with and without reset, and setting daily schedules.

SUMMARY AND SPECIFICATIONS

SUMMARY MENU and Diagnostics

Overview of scheduled settings, errors, and diagnostic codes for troubleshooting.

SPECIFICATIONS

Technical specifications including power, temperature, and output ratings.

REGULATORY COMPLIANCE (DOC)

Information on emissions, immunity, safety compliance, and FCC statements.