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Honeywell T775U Series Installation Instructions Manual
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Honeywell T775U Series Installation Instructions Manual

2000 electronic stand-alone controller
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T775U Series 2000 Electronic
Stand-Alone Controller
Controller
a
Model
Description
T775U2006
Universal:
Humidity,
Pressure,
Temperature,
etc.
T775U2016
a
The T775U includes a digital input for use with the disable or setback option.
b
The modulating (analog) outputs may be 4-20 mA, 0-10 Vdc, 2-10 Vdc, or Series 90 selectable.
c
For the H775C1004, H775D1003, and H775E1002 model replacement, the T775U only partially replaces the function
of these devices. Check application for suitability.
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.
e
The T775U2016 can control Sensor A (universal) and Sensor B (temperature) independently, like other standard
T775 controllers.
All manuals and user guides at all-guides.com
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
Table 1. T775U Controller Configurations.
Output
Replaces
Reset
H775A1006
Yes
H775A1022
H775A1048
H775A1063
H775B1005
c
H775C1004
c
H775D1003
c
H775E1002
N/A
Yes
E4436
INSTALLATION INSTRUCTIONS
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.
Analog
SPDT
(Mod)
Relay
Sensor
b
Outputs
Outputs
Inputs
2
2
d
2
2
2
e
2
Nbr of
Sensors
Included Enclosure
None
NEMA 1
None
NEMA 1
62-0255-05

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Summary of Contents for Honeywell T775U Series

  • Page 1 All manuals and user guides at all-guides.com T775U Series 2000 Electronic Stand-Alone Controller INSTALLATION INSTRUCTIONS 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.
  • Page 2 • C7046D1008 – 8 inch duct probe with mounting flange For more information on compatible actuators or other • C7100D1001 – 12 inch fast response, duct averaging Honeywell products, such as dampers and valves, go to sensor with flange www.customer.honeywell.com. From the home page •...
  • Page 3 All manuals and user guides at all-guides.com BEFORE INSTALLATION T775U SERIES 2000 CONTROLLER Controller Dimensions 1 (25.5) 7/8 (22.5) 2 15/16 (74) 4 13/32 (112.1) 1/2 (12.4) 3 31/32 (101) LEFT RIGHT 4 1/16 (103.4) 1/64 (3.8) 8 5/32 (207.1) 7 23/32 4 1/16 (103.4)
  • Page 4 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER WIRING WIRING Use a screwdriver to pry out only the knockouts that you will use. If mounting on DIN rail, be sure to remove the knockouts All wiring must comply with applicable electrical codes before mounting.
  • Page 5 All manuals and user guides at all-guides.com WIRING T775U SERIES 2000 CONTROLLER Multiple Parallel Temperature Sensors Temperature Sensor Wire Type and Size Multiple sensors can be parallel-series wired to sense Temperature sensors use standard AWG 18/2 unshielded average temperatures in large spaces. To maintain wire.
  • Page 6 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER WIRING SHIELDED CABLE SHIELDED CABLE NOTES: NOTES: 1. SHIELDED CABLE MUST BE 1. SHIELDED CABLE MUST BE SENSOR A SENSOR A CONNECTED TO A SEPARATE CONNECTED TO A SEPARATE EARTH GROUND.
  • Page 7 All manuals and user guides at all-guides.com WIRING T775U SERIES 2000 CONTROLLER Controller Wiring See Fig. 11 on page 8 for locating the appropriate power input, remote sensors input, low voltage, contact closure, and load output terminals. WARNING Access to the terminals can be gained through standard conduit knockouts (A through E in Fig.
  • Page 8 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER WIRING Controller Wiring Details KNOCKOUT A The wiring connection terminals are shown in Fig. 11 and are described in Table 2. See Fig. 12 – Fig. 18 beginning –...
  • Page 9 All manuals and user guides at all-guides.com WIRING APPLICATION EXAMPLES T775U SERIES 2000 CONTROLLER WIRING APPLICATION EXAMPLES – Fig. 12 – 18 illustrate typical controller wiring for various applications. NOTE: The electronic Series 90 output provided with modulating T775 models can not drive electro-...
  • Page 10 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER CHECKOUT If any wiring changes are required, first be sure to remove power from the controller before starting work. Pay HONEYWELL ELECTRONIC SERIES 90 MODUTROL MOTOR particular attention to verifying the power connection (24, 120, or 240 Vac).
  • Page 11 All manuals and user guides at all-guides.com INTERFACE OVERVIEW T775U SERIES 2000 CONTROLLER Table 4. Temperature Sensor Calibration for HOME Resistance Loss due to Wire Length. RELAYS 1 2 MENU AREA Temperature Offset in °F (Feet) SENSORS SENSOR A Rating mΩ/ft...

  • Page 12: Schedule

    All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER INTERFACE OVERVIEW Up and Down Arrow Buttons ( Program, Schedule, and Summary Menus Use these buttons to move your selection up and down To access these menus from the home screen, press the through a menu or list.
  • Page 13 All manuals and user guides at all-guides.com PROGRAMMING OVERVIEW T775U SERIES 2000 CONTROLLER NOTES: IMPORTANT If you press the HOME button or there is no 1. This action sets the maximum setpoint value of keypad activity for four minutes, you exit all outputs to the setpoint high limit maximum.
  • Page 14 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 1. SETUP Setup Procedure To change the controller’s sensors and output setup parameters, perform the following procedures in the order The Setup process uses a hierarchical menu structure listed: that is easy to use.

  • Page 15: Press The

    All manuals and user guides at all-guides.com 1. SETUP T775U SERIES 2000 CONTROLLER 1.2.2.1. TYPE SETUP SETUP (Sensor A only) SENSORS SENSORS 1. From the Sensor A selections, use the SENSOR A SENSOR A TYPE TYPE buttons to highlight TYPE.
  • Page 16 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 1. SETUP SETUP SETUP SETUP 1.2.2.2.3. MIN or MAX VALUE (Sensor A only; 0-5V, 0- SENSORS SENSORS SENSORS SENSOR A SENSOR A SENSOR A 10V or 4-20mA) MIN VAL...
  • Page 17 All manuals and user guides at all-guides.com 1. SETUP T775U SERIES 2000 CONTROLLER 1.2.2.5. Exit Sensor A Setup SETUP SENSORS Press the button to exit Sensor A selections and return SENSOR A to the Sensors menu. UNITS CALIBRATE Use the...
  • Page 18 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 1. SETUP 1.3.1. Setting up the Modulating Outputs SETUP SETUP OUTPUTS OUTPUTS MOD 1 MOD 1 1. From the Output menu, use the buttons to highlight the desired modulating output (MOD 1 or...
  • Page 19 All manuals and user guides at all-guides.com 1. SETUP T775U SERIES 2000 CONTROLLER NOTES: (Integral Timing) 1. The Integral time is factory set for 400 seconds. This the offset from setpoint during steady state control is a good middle range and should satisfy many that is often seen in proportional only control.
  • Page 20 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 1. SETUP SETUP SETUP 1.3.1.6. RESET OUTPUTS OUTPUTS MOD 1 MOD 1 This selection enables the controller’s Reset function, and RESET RESET allows each output to be individually programmed for YES-BOILER Reset or No Reset.
  • Page 21 All manuals and user guides at all-guides.com 1. SETUP T775U SERIES 2000 CONTROLLER 1.3.2. NBR OF RELAYS SETUP SETUP OUTPUTS OUTPUTS # RELAYS # RELAYS 1. From the Outputs menu, use the buttons to highlight # RELAYS. 2. Press the button to display the number of relays.
  • Page 22 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 1. SETUP SETUP 1.3.3.2. MIN OFF MIN ON SETUP SETUP OUTPUTS OUTPUTS OUTPUTS OPTIONS OPTIONS OPTIONS This is the minimum number of seconds of “off time” or MIN OFF...
  • Page 23 All manuals and user guides at all-guides.com 1. SETUP T775U SERIES 2000 CONTROLLER SETUP SETUP 1.3.3.4. SHOW RT (show run time hours) OUTPUTS OUTPUTS OPTIONS OPTIONS SHOW RT 1. Press the button to display the Show RT values. SHOW RT 2.
  • Page 24 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 1. SETUP SETUP SETUP 1.3.4.2. RESET OUTPUTS OUTPUTS RELAY 1 RELAY 1 RESET RESET IMPORTANT For relays to use the Reset function of the con- troller, both modulating outputs (MOD 1 and MOD 2) must be set for Reset.
  • Page 25 All manuals and user guides at all-guides.com 2. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH NO RESET T775U SERIES 2000 CONTROLLER 2. PROGRAMMING OUTPUTS (MOD NOTE: For applications where Reset is not used, only one sensor (Sensor A) is available for use.
  • Page 26 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 2. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH NO RESET MENU 2.1.3. SETBACK PROGRAM PROGRAM MOD 1 MOD 1 The Setback temperature option displays only if SETBACK SETBACK scheduling is enabled (see Fig. 47 on page 21) or the DI Option is set to Setback.
  • Page 27 All manuals and user guides at all-guides.com 2. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH NO RESET T775U SERIES 2000 CONTROLLER MENU 2.1.6. ACTION PROGRAM PROGRAM MOD 1 MOD 1 ACTION 1. From the menu, use the buttons to high- ACTION light ACTION.
  • Page 28 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 3. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH RESET 3. PROGRAMMING OUTPUTS (MOD NOTE: Even if the MOD outputs are not used, both MOD 1 and MOD 2 must be set to Reset in order AND RELAY) WITH RESET to configure Reset for the relay(s).

  • Page 29: Use The

    All manuals and user guides at all-guides.com 3. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH RESET T775U SERIES 2000 CONTROLLER NOTE: For MOD 2 and the Relays, a setpoint offset is used. See “3.3.1. SETPOINT OFFSET (MOD 2 °F only)” on page 32.

  • Page 30: Press The

    All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 3. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH RESET MENU 3.2.3. SP MIN A2 or BOILER MIN PROGRAM PROGRAM MOD 1 MOD 1 (Setpoint minimum for Sensor A) SP MIN A2 SP MIN A2 1.
  • Page 31 All manuals and user guides at all-guides.com 3. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH RESET T775U SERIES 2000 CONTROLLER MENU 3.2.6. ACTION PROGRAM PROGRAM RELAY 1 RELAY 1 For the MOD 1 output (and for outputs with RESET=NO), ACTION ACTION the ACTION selection displays.
  • Page 32 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 3. PROGRAMMING OUTPUTS (MOD AND RELAY) WITH RESET MENU 3.3. Second Modulating Output and Relays MENU PROGRAM PROGRAM PROGRAM MOD 2 For the second Modulating Output and the two Relays (if...

  • Page 33: Scheduling

    All manuals and user guides at all-guides.com 4. SCHEDULING T775U SERIES 2000 CONTROLLER 4. SCHEDULING Scheduling provides the ability to set daily temperature If you press the HOME button or there is no settings for up to two events per day. Typically, these are...
  • Page 34 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 4. SCHEDULING MAIN MAIN 4.2.1. SET TIME SCHEDULE SCHEDULE OPTIONS OPTIONS Setting the system time is required to enable the SET TIME SET TIME controller to follow daylight saving time.

  • Page 35: From The Selected Time Period Menu, Use The

    All manuals and user guides at all-guides.com 4. SCHEDULING T775U SERIES 2000 CONTROLLER 4.3. Setting Individual Schedules MENU MENU SCHEDULE SCHEDULE As shown in the Schedule menu (Fig. 76 on page 33), MON-FRI MON-FRI schedules can be set for the following time periods: E1 SETPT •...

  • Page 36: Table Of Contents

    All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 4. SCHEDULING MAIN MAIN 4.3.2. E1 TIME (time for event 1) SCHEDULE SCHEDULE MON-FRI MON-FRI E1 TIME E1 TIME 1. From the selected time period menu, use the buttons to highlight E1 TIME.
  • Page 37 All manuals and user guides at all-guides.com SUMMARY MENU T775U SERIES 2000 CONTROLLER SUMMARY MENU Error Message There is a two-character error code that displays in response to controller software problems: The Summary menu provides the ability to view the schedule (E1 and E2 times) for each relay for each day of the week.
  • Page 38 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER reasonable protection against harmful interference in residential installations. This equipment generates, uses, and can radiate radio frequency energy, and if not Emissions Compliance installed and used in accordance with the instructions, may cause harmful interference to radio communications.
  • Page 39 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER 62-0255–05...
  • Page 40 All manuals and user guides at all-guides.com T775U SERIES 2000 CONTROLLER Automation and Control Solutions Honeywell International Inc. Honeywell Limited-Honeywell Limitée 1985 Douglas Drive North 35 Dynamic Drive Golden Valley, MN 55422 Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered Trademark ©...

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