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Honeywell T775 Series 2000 Application Manual

Honeywell T775 Series 2000 Application Manual

T775 series 2000 electronic stand-alone controllers

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Table of Contents
T775 Series 2000 Electronic
Stand-Alone Controllers
APPLICATION GUIDE AND CROSS REFERENCE
63-7147-05

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Summary of Contents for Honeywell T775 Series 2000

  • Page 1 T775 Series 2000 Electronic Stand-Alone Controllers APPLICATION GUIDE AND CROSS REFERENCE 63-7147-05...
  • Page 2: Table Of Contents

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS IMPORTANT The T775R 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 OF CONTENTS T775 Application Tips ..........
  • Page 3: T775 Application Tips

    MS4110, MS4120, MS7505, MS7510, MS7520, MS8105, MS8110, MS8120 • Non-spring return models: ML4161, ML6174, ML7161, Q What are the T775 Series 2000 Controller specifications? ML7164, MN1010, MN6105, MN7505, MN8810 A Refer to the T775 Series 2000 Electronic Stand-Alone See form 62-0265 - Temperature Sensor for the T775 Series Controllers - Specification Data (form 63-1318).
  • Page 4: Accessories

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS FEATURES Accessories • 107324A – Bulb Holder, duct insertion • 107408 – Heat Conductive Compound, 4 ounce In Table 1 a check mark () indicates that the controller model • 50001774-001 – Immersion Well, stainless steel 304, has this feature.
  • Page 5 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Table 1. T775 controller features by model number. (Continued) Feature Sensor Inputs Number of sensor inputs Number of sensors included 0 n/a 1097 Ohms PTC at 77° F (25° C)  n/a  ...
  • Page 6: T775 Operations

    IMPORTANT 1. This action sets the maximum setpoint value of all For all T775 Series 2000 controllers, the derivative default outputs to the setpoint high limit maximum. value is factory set to zero (no derivative control). It is strongly 2.
  • Page 7: Reset Programming (T775L, T775P, T775R, And T775U Models Only)

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Reset Programming (T775L, T775P, Choose Reset = NO for any outputs you do not wish to reset, then press the HOME button to record your selection. T775R, and T775U models only) NOTES: To program an output for reset, refer to the values as shown in A single reset curve is programmed for the first the example below and in Fig.
  • Page 8: T775 Applications

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775 APPLICATIONS Water Source Heat Pump Loop Water Setpoints may differ according to equipment manufacturers. See their recommendations. Controller – T775B IMPORTANT After the desired value is selected, be sure to press Application Description the ...
  • Page 9: Chiller - T775B

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Chiller – T775B IMPORTANT After the desired value is selected, be sure to press the  or  or HOME button in order to save that Application Description value in the controller’s memory. As the water temperature in the sump rises, the T775B...
  • Page 10: Chiller, Rotary Compressor - T775B

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Chiller, Rotary Compressor – T775B SENSOR A (DISCHARGE WATER) Application Description The T775B is controlling the discharge water temperature of a rotary compressor. The T775B provides an optional low T775B temperature or low pressure cut-out circuit.
  • Page 11: Cooling Tower Control - T775B2040

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Cooling Tower Control – T775B2040 Wiring All output relays should have a common power wiring source, which may or may not be the same as the T775 power wiring. Application Description See Fig. 6.
  • Page 12: Time-Based Control Of Fan, Pump, Etc. - T775 (All Models)

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Time-based Control of Fan, Pump, NOTE: Keep in mind that if the scheduler is energized, all relays will follow the time schedule. If you do not etc. T775 (all models) — want some outputs to go into a setback mode,...
  • Page 13: Damper Or Valve Modulation - T775M Or T775R

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Damper or Valve Modulation – T775M MS75xx or T775R SPRING RETURN DIRECT COUPLED ACTUATOR (DCA) WIRING Application Description STRIP (HOT) In this example, a T775M is controlling an actuator, based on temperature input, to modulate a damper or valve.
  • Page 14: Hot Water Reset - T775R

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Hot Water Reset – T775R MENU MENU PROGRAM Application Description PROGRAM PROGRAM RELAY 2 RELAY 2 RELAY 2 OFFSET The T775R is controlling the boiler water temperature with two OFFSET stages (relays), based on outside temperature using a reset DIFFRNTL curve and an offset for Relay 2.
  • Page 15 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Hot Water Reset (continued) Device Checkout The T775 performance can be checked out to determine if proper operation exists. Wiring For example, when the outside air temperature is at 50° F All output relays should have a common power wiring source, (10°...
  • Page 16: Chilled Water Reset - T775R

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Chilled Water Reset – T775R Relay 1: Control to the chilled water temperature Program for: (Refer to the reset curve in Fig. 15.) — Setpoint Max A1 (Chiller) = 60° F (16° C) Application Description —...
  • Page 17: Multi-Stage Boiler Control (No Reset) - T775P

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Chilled Water Reset (continued) Multi-Stage Boiler Control (No Reset) – T775P Device Checkout Application Description The T775 performance can be checked out to determine if proper operation exists. The T775P is providing multistage boiler control based on the boiler's discharge water temperature.
  • Page 18: Multi-Stage Boiler Control (Reset) - T775P

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Multi-Stage Boiler Control (Reset) – Refer to the staging diagram in Fig. 18 for individual stage behavior. T775P STAGES Application Description STAGE 3 ON The T775P is providing multistage boiler control based on the HYST.
  • Page 19 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Wiring IMPORTANT After the desired value is selected, be sure to press All output relays should have a common power wiring source, the  or  or HOME button in order to save that which may or may not be the same as the T775 power wiring.
  • Page 20: Multi-Stage Chiller Control (No Reset) - T775P

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Multi-Stage Chiller Control (No STAGES Reset) – T775P STAGE 3 ON HYST. Application Description STAGE 3 STAGE 2 ON The T775P is providing multistage cooling control based on the chiller’s discharge water temperature. The T775P uses...
  • Page 21: Stage With Pump Output And Reset

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS 4 Stage with Pump Output and Reset See Notes in “Programming Example” on page 18 for an explanation of Prepurge and Postpurge times. – T775P using a T775S Expansion Module IMPORTANT After the desired value is selected, be sure to press Application Description the ...
  • Page 22: Stage With Pump Output And Reset (Continued)

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS 4 Stage with Pump Output and Reset (continued) Wiring All output relays should have a common power wiring source, which may or may not be the same as the T775 power wiring. See Fig. 27.
  • Page 23: Stage Reciprocating Chiller - T775L

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS 3 Stage Reciprocating Chiller – Wiring All output relays should have a common power wiring source, T775L which may or may not be the same as the T775 power wiring. See Fig. 29. Application Description...
  • Page 24: Stage Heat And 6 Stage Cool - T775L

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS 4 Stage Heat and 6 Stage Cool – Loop 2: Control to Sensor B Program for: T775L — Setpoint = 72° F (22° C) — Throttling Range = 12° F (-11° C) Application Description —...
  • Page 25: Stage Heat And 6 Stage Cool (Continued)

    4 Stage Heat and 6 Stage Cool (continued) SENSOR B SENSOR A T775L FIRST SECOND T775S T775S – – – – (HOT) 24 VAC 4 120 VAC 4 120 VAC (HOT) RELAY RELAY RELAY RELAY RELAY RELAY HEAT COOL HEAT COOL COOL RELAY...
  • Page 26: Pressure With A Variable Frequency Drive (Vfd) - T775U

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Pressure with a Variable Frequency IMPORTANT After the desired value is selected, be sure to press Drive (VFD) – T775U the  or  or HOME button in order to save that value in the controller’s memory.
  • Page 27: Carbon Dioxide (Co2) Sensing - T775U

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Carbon Dioxide (CO ) Sensing – IMPORTANT After the desired value is selected, be sure to press T775U the  or  or HOME button in order to save that value in the controller’s memory.
  • Page 28: Resetting Zone Air Temp Based On Outside Air Temp (2 Stage Cooling)

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Resetting Zone Air Temp Based on Programming Example Program in Setup: Outside Air Temp (2 stage cooling) Press and hold the MENU button for 5 seconds to enter Setup mode. Select the Outputs menu, and then select:...
  • Page 29: Resetting Discharge Air Temp Based On Return Air Temp (Modulating Cooling Valve)

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Resetting Discharge Air Temp Based Programming Example Program in Setup: on Return Air Temp (Modulating cooling valve) Press and hold the MENU button for 5 seconds to enter Setup mode. Select the Outputs menu, and then select: →...
  • Page 30: Using The T775R As A Differential Temperature Controller For Solar Water Heating

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Using the T775R as a Differential Programming Example Temperature Controller for Solar Program in Setup: Water Heating Press and hold the MENU button for 5 seconds to enter Setup mode. Select the Outputs menu, and then select: Application Description Setting up the Sensor label names (Optional).
  • Page 31 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS SENSOR A (COLLECTOR SENSOR B WATER TEMP.) (STORAGE WATER TEMP.) 120V RELAY RELAY PUMP RELAY RELAY ALARM/ VALVE FOR 240 VAC LOAD, CONNECT TO 240 VAC TERMINAL M32046 Fig. 39. T775R wiring diagram for solar water heating.
  • Page 32: Maintaining Differential Temperature For Both Heating And Cooling

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Maintaining Differential Temperature Select Label, then highlight ROOM A. Press  once to get back to the SENSORS menu. Select SENSOR B. Select for both Heating and Cooling Label then highlight OUTDOOR B. Choose other names if desired.
  • Page 33: T775 Application Replacement Examples

    REPLACEMENT EXAMPLES This replacement example illustrates how a T775M2030 is configured to replace a two-stage Heat and two-stage Cool This section describes how a T775 Series 2000 Electronic W973A Logic Panel. Stand-Alone Controller is wired and programmed to replace various older generation Honeywell devices.
  • Page 34 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775M2030 Replacement for W973A NOTE: Fig. 43 is for wiring purposes only. A thorough review of the existing W973A application is required in order Logic Panel (continued) to determine the capability of the T775 controller replacement.
  • Page 35: T775R Replacement For W964F Aquatrol Panel With Floating Actuator

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775M2030 Replacement for W973A In this replacement application, the T775M2030 provides the following, as described in Table 2. Logic Panel (continued) Table 2. T775M2030 replacement for W973A Component/Function W973A Logic Panel T775M2030 Replacement Thermostat T7067 Sensor A (Room) - C7130B1008.
  • Page 36 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775R Replacement for W964F NOTE: Table 45 is for wiring purposes only. A thorough review of the existing W964F application is required Aquatrol Panel with Floating in order to determine the capability of the T775 con- troller replacement.
  • Page 37 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775R Replacement for W964F In this replacement application, the T775R provides the following, as described in Table 3. Aquatrol Panel with Floating Actuator (continued) Table 3. T775R replacement for W964F Component/Function W964F Aquatrol T775R Replacement...
  • Page 38: T775L Replacement For S984 Step Controller

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775L Replacement for S984 Step NOTE: This replacement section also applies to the S684 Step Controller. Controller Fig. 46 illustrates the wiring connections for the S984 Step This replacement example illustrates how a T775L using a Controller.
  • Page 39 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775L Replacement for S984 Step NOTE: Fig. 47 is for wiring purposes only. A thorough review of the existing S984 application is required in order to Controller (continued) determine the capability of the T775 controller replacement.
  • Page 40 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS Table 4. T775L replacement for S684 or S984. Component/Function S684 or S984 T775L Replacement Sensor Series 60, Series Sensor A - Standard 1097 Ohm temperature sensor. 90, T915, T991, Sensor B - Standard 1097 Ohm temperature sensor; (required only if reset T921, W902, etc.
  • Page 41: T775L Replacement For W7100C Discharge Air Controller

    T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775L Replacement for W7100C Fig. 48 illustrates the wiring connections for the W7100C Discharge Air Controller. Discharge Air Controller Fig. 49 and Table 5 on page 43 illustrate the wiring and This replacement example illustrates how a T775L using a configuration of the T775L controller.
  • Page 42 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775L Replacement for W7100C NOTE: Fig. 49 is for wiring purposes only. A thorough review of the existing W7100C application is required in Discharge Air Controller (continued) order to determine the capability of the T775 controller replacement.
  • Page 43 T775 SERIES 2000 ELECTRONIC STAND-ALONE CONTROLLERS T775L Replacement for W7100C In this replacement application, the T775L provides the following, as described in Table 5: Discharge Air Controller (continued) Table 5. T775L Replacement for W7100C. W7100C Component/Function Discharge Air Controller T775L Replacement...
  • Page 44: T775 Cross Reference

    Length Replacement (Order Sep.) Replacement (Order Sep.) Comments NOTE: For all T775 Series 2000 Controllers, the Setpoint Temperature Range is -40° to 248° F (-40° to 120° C). Johnson System 350 A350A/B Johnson T775A2009 Johnson model: 1 SPDT temperature A350A/B with...
  • Page 45 T775U2006 Johnson model: 1 mod pressure with 2 SPDT to 2 S352s Any system Johnson See comment. All T775 Series 2000 controllers have an LCD with D350 display Any system Johnson See comment. All T775 Series 2000 controllers can accept 24...
  • Page 46 Well # Electronic Well # Control Manufacturer Range (RH) Action Length Replacement (Order Sep.) Replacement (Order Sep.) Comments T6031A1011 Honeywell 15 to 90 SPDT 5 ft. T775A2009 5001774-001 T6031A1029 Honeywell -30 to 90 SPDT 8 ft. T775A2009 5001774-001 T6031A1045 Honeywell...
  • Page 47 Table 6. Cross Reference. (Continued) Recommended Recommended Temperature ° F/ Honeywell Honeywell Honeywell Honeywell Humidity Switch Electromechanical Well # Electronic Well # Control Manufacturer Range (RH) Action Length Replacement (Order Sep.) Replacement (Order Sep.) Comments T675A1516 Honeywell 0 to 100 SPDT 5 ft.
  • Page 48 Table 6. Cross Reference. (Continued) Recommended Recommended Temperature ° F/ Honeywell Honeywell Honeywell Honeywell Humidity Switch Electromechanical Well # Electronic Well # Control Manufacturer Range (RH) Action Length Replacement (Order Sep.) Replacement (Order Sep.) Comments T775B1018 Honeywell -20 to 240...
  • Page 49 Table 6. Cross Reference. (Continued) Recommended Recommended Temperature ° F/ Honeywell Honeywell Honeywell Honeywell Humidity Switch Electromechanical Well # Electronic Well # Control Manufacturer Range (RH) Action Length Replacement (Order Sep.) Replacement (Order Sep.) Comments Johnson (Mechanical) A19ABA-40 Johnson -30 to 100...
  • Page 50 Table 6. Cross Reference. (Continued) Recommended Recommended Temperature ° F/ Honeywell Honeywell Honeywell Honeywell Humidity Switch Electromechanical Well # Electronic Well # Control Manufacturer Range (RH) Action Length Replacement (Order Sep.) Replacement (Order Sep.) Comments A28AA-9 Johnson 20 to 80 2-SPDT 6 ft.
  • Page 51 Table 6. Cross Reference. (Continued) Recommended Recommended Temperature ° F/ Honeywell Honeywell Honeywell Honeywell Humidity Switch Electromechanical Well # Electronic Well # Control Manufacturer Range (RH) Action Length Replacement (Order Sep.) Replacement (Order Sep.) Comments A80ABA-3 Johnson 60 to 140 135 Ohm 6 ft.
  • Page 52 Table 6. Cross Reference. (Continued) Recommended Recommended Temperature ° F/ Honeywell Honeywell Honeywell Honeywell Humidity Switch Electromechanical Well # Electronic Well # Control Manufacturer Range (RH) Action Length Replacement (Order Sep.) Replacement (Order Sep.) Comments 230-22 White Rodgers 20 to 120 SPST 8 ft.
  • Page 53 Table 6. Cross Reference. (Continued) Recommended Recommended Temperature ° F/ Honeywell Honeywell Honeywell Honeywell Humidity Switch Electromechanical Well # Electronic Well # Control Manufacturer Range (RH) Action Length Replacement (Order Sep.) Replacement (Order Sep.) Comments TC4252 Barber Colman 70 to 120 SPDT 30 ft.
  • Page 54 Table 7. Cross Reference. (Continued) Tekmar Model & T775 Cross Features Our Stage Nine Stage T775P2003 & (2) One Stage T775A2009 Two Stage T775B2032 One Stage T7775P2003 T775R2035 One Stage Boiler T7775P2003 T775R2035 Two Stage Boiler & T7775P2003 T775P2003 Boiler & DHW Boiler &...
  • Page 55: Notes

    NOTES 63-7147—05...
  • Page 56 Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive ® U.S. Registered Trademark Toronto, Ontario M1V 4Z9 © 2010 Honeywell International Inc. 63-7147—05 M.S. Rev. 10-10 customer.honeywell.com Printed in U.S.A.

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