Honeywell T755U - Manual

Honeywell T755U

Honeywell T755U – Manual, read for free online in PDF format. We hope this helps you resolve any issues you may have. If you have further questions, please contact us through the contact form.

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Table of Contents:

  • Page 2 – Actuators; Product Selection Tool
  • Page 3 – Controller Dimensions; BEFORE INSTALLATION; Review the “Specifications” on page 38 before; When Installing This Product; INSTALLATION AND SETUP; Controller Mounting
  • Page 4 – and Location; WIRING; Wiring Connections Access; CAUTION; Reset Temperature Control
  • Page 5 – Temperature Sensor Wire Type and Size; Sensor Wiring
  • Page 6 – connection from Sensor A to 0-10 Vdc sensor
  • Page 7 – Controller Wiring; WARNING; Controller Wiring Method
  • Page 8 – Controller Wiring Details
  • Page 9 – WIRING APPLICATION
  • Page 10 – CHECKOUT; Power Loss
  • Page 11 – INTERFACE OVERVIEW
  • Page 12 – Using the LCD Panel Interface; Home Button; Home Screen; Accessing the Menus
  • Page 13 – Menus; Using the Menus; PROGRAMMING OVERVIEW; Setpoint and Differential
  • Page 14 – Programming the T775U; HOME
  • Page 15 – Setup Procedure; NOTE: The menus can display only those relays that
  • Page 16 – PTC temperature sensor.
  • Page 18 – NOTE: Sensor B is available only for reset on the
  • Page 21 – NOTE: The MOD1 and MOD2 outputs are still active
  • Page 22 – all
  • Page 23 – or
  • Page 26 – PROGRAMMING OUTPUTS; WITH NO
  • Page 27 – No Reset; NOTE: The Setback parameter displays only if
  • Page 28 – DIFFERENTIAL
  • Page 29 – PROGRAMMING OUTPUTS; WITH; Determining and Setting the Reset
  • Page 30 – Reset
  • Page 32 – not
  • Page 33 – Relays
  • Page 34 – Creating a Schedule
  • Page 36 – SCHEDULING EXAMPLE; DAY
  • Page 37 – (exit from selected time period
  • Page 38 – SUMMARY MENU; Error Message; EE; Diagnostic Messages; Blinking relay status; SPECIFICATIONS
  • Page 39 – DoC; Emissions Compliance
  • Page 40 – Automation and Control Solutions
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INSTALLATION INSTRUCTIONS

62-0255-09

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 T775U2006.

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

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Summary

Page 2 - Actuators; Product Selection Tool

T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—09 2 Temperature Sensors a (Sensor A or B) The controller accepts 1,097 Ohms PTC at 77°F (25°C):• 50021579-001 – Standard sensor (included with all models except NEMA 4X models) • T775-SENS-WR – Water resistant with 5 foot leads (included w...

Page 3 - Controller Dimensions; BEFORE INSTALLATION; Review the “Specifications” on page 38 before; When Installing This Product; INSTALLATION AND SETUP; Controller Mounting

T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3 62-0255—09 Controller Dimensions Fig. 1. T775U Dimensions in inches (mm). BEFORE INSTALLATION Review the “Specifications” on page 38 before installing the controller. When Installing This Product 1. Read these instructions carefully. Failure to f...

Page 4 - and Location; WIRING; Wiring Connections Access; CAUTION; Reset Temperature Control

T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 62-0255—09 4 Use a screwdriver to pry out only the knockouts that you will use. If mounting on DIN rail, be sure to remove the knockouts before mounting. See “Controller Wiring” on page 7 and Fig. 12 on page 9 for recommended knockout usage and loc...

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