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Honeywell T775U 2000 Series Installation Instructions Manual
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Honeywell T775U 2000 Series Installation Instructions Manual

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 T775U2006.
e
The T775U2016 can control Sensor A (universal) and Sensor B (temperature) independently, like other standard
T775 controllers.
Table 1. T775U Controller Configurations.
Output
Replaces
Reset
H775A1006
Yes
H775A1022
H775A1048
H775A1063
H775B1005
c
H775C1004
c
H775D1003
c
H775E1002
N/A
Yes
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. 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.
Analog
SPDT
(Mod)
Relay
Outputs
Outputs
2
2
2
2
Nbr of
Sensor
Sensors
b
Inputs
Included Enclosure
None
d
2
None
e
2
62-0255-09
NEMA 1
NEMA 1

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Summary of Contents for Honeywell T775U 2000 Series

  • Page 1 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. A built-in time clock is standard. The T775U controller allows a wide range of sensors to be configured.
  • 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 select Product Selection Tool under Products.
  • Page 3 T775U SERIES 2000 ELECTRONIC STAND-ALONE 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) (196) 2 13/16 (71.8) 2 11/16 (68.1) FRONT VIEW 7/8 (22.5)
  • Page 4 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 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. See “Controller Wiring” on page 7 and and ordinances, or as specified on installation wiring Fig.
  • Page 5 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Temperature Sensor Wire Type and Size SENSORS Temperature sensors use standard AWG 18/2 unshielded wire. For cable runs greater than 25 feet or where electrical interference may be a problem, shielded cable is recommended. See Fig. 4. Refer to “Temperature Sensor Calibration”...
  • Page 6 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 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. HOWEVER, EARTH GROUND. HOWEVER, SENSOR B DO NOT GROUND SHIELDED SENSOR B...
  • Page 7 T775U SERIES 2000 ELECTRONIC STAND-ALONE 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 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Controller Wiring Details The wiring connection terminals are shown in Fig. 11 and are described in Table 2. See Fig. 12 – Fig. 19 beginning on page 9 for typical T775U wiring applications. Fig. 11. T775U Terminal and Feature Locations. KNOCKOUT A –...
  • Page 9 PRESSURE, ETC), REFER TO THE SENSOR WIRING SECTIONS BEGINNING ON PAGE 4. M24554A Fig. 12. Wiring for Two-stage Control – 24 Vac Input and 24 Vac Load. 240V HONEYWELL MODUTROL MOTOR WITH 4-20 mA MODULATING INPUT – + T1 T2 LOAD 2 POWER –...
  • Page 10 M24559 MODULATING OUTPUT – Fig. 16. Wiring for Digital Input (dry contact). TERMINAL (MOD 1) HONEYWELL MODUTROL MOTOR WITH VOLTAGE CONTROL INPUT USE SEPARATE TRANSFORMER FOR T775 WHEN USING 24 VAC. + – T1 T2 A 250 OHM RESISTOR PROVIDES 40% AUTHORITY WHEN USING A 150 OHM MINIMUM POSITION POTENTIOMETER.
  • Page 11 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Humidity, Pressure, and Universal Table 4. Temperature Sensor Calibration for Resis- tance Loss due to Wire Length. (Continued) Sensor Calibration Temperature Offset in A calibration parameter is available using Setup mode. °F (Feet) The calibration range is +/- 10% of the Min Value to Max Rating m /ft 200 ft...
  • Page 12 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Up and Down Arrow Buttons ( p and q HOME Use these buttons to move your selection up and down RELAYS 1 2 MENU AREA through a menu or list. • When the desired item is highlighted, you press the u arrow button to display that item’s content.
  • Page 13 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Program, Schedule, and Summary NOTES: If you press the HOME button or there is no Menus keypad activity for four minutes, you exit To access these menus from the home screen, press the Program mode and return to the home MENU button.
  • Page 14 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1. SETUP IMPORTANT 1. This action sets the maximum setpoint value of all outputs to the setpoint high limit maximum. Setup provides the ability to change the factory default 2. Setting the high limit setpoint maximum is irre- settings for the temperature sensors and outputs, to versible.
  • Page 15 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 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. You press the t and u arrow buttons to 1.
  • Page 16 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1.2.2.1. TYPE SETUP SETUP (Sensor A only) SENSORS SENSORS 1. From the Sensor A selections, use the p and q but- SENSOR A SENSOR A TYPE TYPE tons to highlight TYPE. 2. Press the u button to display the type values. PT 1000 0-5V 3.
  • Page 17 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SETUP 1.2.2.2.3. MIN or MAX VALUE SETUP SETUP (Sensor A only; SENSORS SENSORS SENSORS SENSOR A SENSOR A SENSOR A 0-5V, 0-10V or 4-20mA) MIN VAL MIN VAL MAX VAL The minimum and maximum values display only for MAX VAL Sensor A when its type is 0-5V, 0-10V or 4-20MA.
  • Page 18 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1.2.2.5. Exit Sensor A Setup SETUP SENSORS Press the t button to exit Sensor A selections and return SENSOR A to the Sensors menu. UNITS CALIBRATE Use the p and q buttons to highlight EXIT and press the u LABEL EXIT button.
  • Page 19 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1.3.1. Setting up the Modulating Outputs SETUP SETUP OUTPUTS OUTPUTS MOD 1 1. From the Output menu, use the p and q buttons to MOD 1 highlight the desired modulating output (MOD 1 or TYPE MIN OUT % MOD 2).
  • Page 20 T775U SERIES 2000 ELECTRONIC STAND-ALONE 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. applications.
  • Page 21 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SETUP 1.3.1.6. RESET SETUP 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. YES-OTHER IMPORTANT To use the Reset function of the controller, the first modulating output (MOD1) must be set for...
  • Page 22 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1.3.2. NBR OF RELAYS SETUP SETUP OUTPUTS OUTPUTS # RELAYS # RELAYS 1. From the Outputs menu, use the pand q buttons to highlight # RELAYS. 2. Press the u button to display the number of relays. 3.
  • Page 23 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1.3.3.2. MIN OFF MIN ON SETUP SETUP SETUP OUTPUTS OUTPUTS OUTPUTS OPTIONS OPTIONS OPTIONS This is the minimum number of seconds of “off time” or MIN OFF MIN ON MIN OFF “on time” for all relays. MIN ON 1.
  • Page 24 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SETUP 1.3.3.3. DI OPTIONS (digital input options) SETUP OUTPUTS OUTPUTS OPTIONS OPTIONS The DI Option you select applies to all outputs. This DI OPTS DI OPTS option overrides any Setpoint/Setback values entered in DISABLE the Schedule.
  • Page 25 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 1.3.4. Setting up the Relays SETUP SETUP OUTPUTS OUTPUTS RELAY 1 RELAY 1 1. From the Outputs menu, use the p and q buttons to highlight the desired relay (1 or 2). SCHEDULE 2. Press the u button to display the selected Relay RESET RESET RT menu.
  • Page 26 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SETUP 1.3.4.3. RESET RT (run time) SETUP OUTPUTS OUTPUTS RELAY 1 RELAY 1 This selection displays only if “Show RT = YES” is RESET RT RESET RT selected during Output Options setup (see page 24). 1.
  • Page 27 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 2.1. Entering Program Mode MENU PROGRAM Press the MENU button, then select PROGRAM and MENU press the u button to view the Program menu. PROGRAM MOD 1 MOD 2 RELAY 1 RELAY 2 EXIT M24567 Fig.
  • Page 28 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Default: 60°F (16°C) Range: -40°F to 248°F (-40°C to 120°C) 3. Press the u button to accept the value and display the menu. 2.1.3. SENSOR MENU PROGRAM PROGRAM MOD 1 MOD 1 This sub-menu choice is only available on the T775U2016 SENSOR SENSOR model.
  • Page 29 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Go to “2.1.2. SETPOINT” on page 27 to continue programming. 2.2. Program Next Output (Modulating When you finish programming the outputs, continue with Output or Relay) “1.3. Exit Programming without Reset”. For the next output, select the desired MOD or Relay from the Program menu (see Fig.
  • Page 30 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER CAUTION °F If using the time clock or DI to go to setback, SP MAX A1 the T775P will shift the reset curve up or down (BOILER MAX) and cause the controlled setpoint to exceed either the entered reset max.
  • Page 31 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3. Use the p and q buttons to increase/decrease the desired setpoint temperature. 3.2.2. RESET B1 or OUTSD MIN Default: 10°F (-12°C) (Sensor B value when at SP MAX A1 Setpoint) Range: -40°F to 248°F (-40°C to 120°C) 4.
  • Page 32 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3.2.6. ACTION MENU PROGRAM PROGRAM RELAY 1 RELAY 1 For the MOD 1 output (and for outputs with RESET=NO), ACTION ACTION the ACTION selection displays. HEAT COOL For all other outputs with RESET=YES, the ACTION REV ACT selection does not display;...
  • Page 33 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 3.3. Second Modulating Output and MENU MENU PROGRAM Relays PROGRAM PROGRAM MOD 2 MOD 2 MOD 2 OFFSET For the second Modulating Output and the two Relays (if OFFSET they are configured for Reset), the Offset parameter THROT RNG ACTION displays on the Program menu as shown in Fig.
  • Page 34 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 4. SCHEDULING If you press the HOME button or there is no Scheduling provides the ability to set daily temperature settings for up to two events per day. Typically, these are keypad activity for four minutes, you exit the daytime (setpoint) and the nighttime (setback) Scheduling mode and return to the home settings.

  • Page 35: Use The U Button To Cycle Between The Hour, Minute

    T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER MAIN 4.2.1. SET TIME MAIN SCHEDULE SCHEDULE OPTIONS OPTIONS Setting the system time is required to enable the SET TIME SET TIME controller to follow daylight saving time. IMPORTANT Set the Date before setting the Time. See “4.2.2. SET DATE”.

  • Page 36: The Selected Time Period Menu

    T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER 4.3. Setting Individual Schedules MENU MENU SCHEDULE SCHEDULE As shown in the Schedule menu (Fig. 77 on page 34), MON-FRI MON-FRI schedules can be set for the following time periods: E1 SETPT • Monday through Friday E1 TIME •...

  • Page 37: Table Of Contents

    T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER MAIN 4.3.2. E1 TIME (time for event 1) MAIN SCHEDULE SCHEDULE MON-FRI MON-FRI E1 TIME 1. From the selected time period menu, use the p and E1 TIME q buttons to highlight E1 TIME. 2.
  • Page 38 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER SUMMARY MENU Error Message There is a two-character error code that displays in The Summary menu provides the ability to view the response to controller software problems: schedule (E1 and E2 times) for each relay for each day of the week.
  • Page 39 T775U SERIES 2000 ELECTRONIC STAND-ALONE 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. EN 55022: 2006 However, there is no guarantee that interference will not CISPR 22: 2006...
  • Page 40 T775U SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLER Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North ® U.S. Registered Trademark Golden Valley, MN 55422 © 2012 Honeywell International Inc. 62-0255—09 M.S. Rev. 05-12 customer.honeywell.com Printed in United States...

This manual is also suitable for:

T775u2006T775u2016