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Honeywell T775U2006 Installation Instructions Manual

T775u series 2000
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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.
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
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
b
Outputs
Outputs
2
2
2
2
Nbr of
Sensor
Sensors
Inputs
Included Enclosure
None
NEMA 1
d
2
None
NEMA 1
e
2
62-0255-05

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  Summary of Contents for Honeywell T775U2006

  • Page 1 Table 1. T775U Controller Configurations. Analog SPDT Nbr of Controller (Mod) Output Relay Sensor Sensors Model Description Replaces Reset Outputs Outputs Inputs Included Enclosure T775U2006 H775A1006 None NEMA 1 H775A1022 H775A1048 Universal: H775A1063 Humidity, H775B1005 Pressure, H775C1004 Temperature, H775D1003 etc. H775E1002 T775U2016 None NEMA 1 The T775U includes a digital input for use with the disable or setback option.
  • 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 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) (196) 2 13/16 (71.8) 2 11/16 (68.1) FRONT VIEW 7/8 (22.5)
  • Page 4 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. See “Controller Wiring” on page 7 and and ordinances, or as specified on installation wiring Fig.
  • Page 5 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. For cable runs greater than 25 feet or where control accuracy, the number of sensors to be parallel- electrical interference may be a problem, shielded cable series wired must be of the n...
  • Page 6 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. HOWEVER, EARTH GROUND. HOWEVER, SENSOR B SENSOR B DO NOT GROUND SHIELDED DO NOT GROUND SHIELDED...
  • Page 7 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 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 – on page 9 for typical T775U wiring applications. SENSOR A MOD 1 –...
  • Page 9 M24559 Fig. 12. Wiring for Two-stage Control – 24 Vac Input Fig. 15. Wiring for Digital Input (dry contact). and 24 Vac Load. HONEYWELL MODUTROL MOTOR WITH HONEYWELL MODUTROL MOTOR WITH VOLTAGE CONTROL INPUT 4-20 mA MODULATING INPUT + –...
  • Page 10 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 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 200 ft 500 ft 1,000 ft 0.46 1.14 2.28...
  • Page 12 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. MENU button.
  • Page 13 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. Program mode and return to the home 2.
  • Page 14 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. You press the arrow buttons 1.
  • Page 15: Use The And

    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. PT 1000 2. Press the button to display the type values. 0-5V 3.
  • Page 16 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 MAX VAL MIN 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 17 SENSOR B EXIT NOTE: Sensor B is available only for reset on the T775U2006, but can be controlled just like Sen- sor A on the T775U2016. 1. From the Sensors menu, use the button to high- light SENSOR B.
  • Page 18 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 TYPE MIN OUT % MOD 2).
  • Page 19 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. applications.
  • Page 20 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. YES-OTHER IMPORTANT To use the Reset function of the controller, the first modulating output (MOD1) must be set for...
  • Page 21 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. 3.
  • Page 22 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 MIN ON MIN OFF “on time” for all relays. MIN ON 1.
  • Page 23 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. Use the buttons to select YES or NO. Default: YES 3.
  • Page 24 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. Relays that have Reset set to YES use the reset curve configured for MOD 1.
  • Page 25 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. AND RELAY) WITH NO RESET The T775U can be programmed for Reset or No Reset. From the factory, the T775U is programmed for No Reset.
  • Page 26 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 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. HEAT COOL Default: HEAT REV ACT 2.
  • Page 28 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: Press The The Selected Time Period Menu

    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. SP MAX A1 The remainder of this section beginning with “3.2. (BOILER MAX) Program Menus for Outputs with Reset”...
  • Page 30 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. From the menu, use the buttons to high- light BOILER MIN or SP MIN A2.
  • Page 31 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. HEAT COOL For all other outputs with RESET=YES, the ACTION REV ACT selection does not display;...
  • Page 32 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 MOD 2 MOD 2 OFFSET they are configured for Reset), the Offset parameter OFFSET displays on the Program menu as shown in Fig.
  • Page 33 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 keypad activity for four minutes, you exit the daytime (setpoint) and the nighttime (setback) Scheduling mode and return to the home settings.
  • Page 34 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. IMPORTANT Set the Date before setting the Time. See “4.2.2.
  • Page 35: E2 Time (Time For Event 2)

    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 • Monday through Friday E1 TIME •...
  • Page 36 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. 2. Press the button to display the current time set- ting for event 1.
  • Page 37 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 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. EN 55022: 2006 CISPR 22: 2006 However, there is no guarantee that interference will not...
  • Page 39 T775U SERIES 2000 CONTROLLER 62-0255–05...
  • Page 40 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 © 2009 Honeywell International Inc. 62-0255–05 M.S. Rev. 02-09...

This manual is also suitable for:

T775u2016