Installation Instructions
Page 1
... and Auto Fan Reset Contents Product Description 1 Features 1 Specifications 2 Installation 3 Setup 10 Operation 14 Troubleshooting 17 Place Bar Code Here 62-0311-05 Valves and auxiliary electric heaters can be controlled using range stops. • EEPROM permanently retains user settings, including setpoints, during power loss (no batteries required). • Selectable °C or °F display via Setup button on thermostat. • Displayable pipe sensor temperature readout to aid in output wiring and external links between wiring terminals allow the fan motor...
... and Auto Fan Reset Contents Product Description 1 Features 1 Specifications 2 Installation 3 Setup 10 Operation 14 Troubleshooting 17 Place Bar Code Here 62-0311-05 Valves and auxiliary electric heaters can be controlled using range stops. • EEPROM permanently retains user settings, including setpoints, during power loss (no batteries required). • Selectable °C or °F display via Setup button on thermostat. • Displayable pipe sensor temperature readout to aid in output wiring and external links between wiring terminals allow the fan motor...
Installation Instructions
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... temperature sensor. Wiring: 11 screw-in terminals located on a horizontal single gang NEMA 2 x 4 in. Minimum Operational Life (at 70°F Remote Pipe Sensor (optional): Type: 20K NTC Working Range: 0°C to 93°C (32°F to 199°F) Display Range: 0°C to 93°C (32°F to six terminals. 3. Meets the same requirements as UL-873. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS SPECIFICATIONS Supply Voltages: TB6575A1000 and TB6575B1000...
... temperature sensor. Wiring: 11 screw-in terminals located on a horizontal single gang NEMA 2 x 4 in. Minimum Operational Life (at 70°F Remote Pipe Sensor (optional): Type: 20K NTC Working Range: 0°C to 93°C (32°F to 199°F) Display Range: 0°C to 93°C (32°F to six terminals. 3. Meets the same requirements as UL-873. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS SPECIFICATIONS Supply Voltages: TB6575A1000 and TB6575B1000...
Installation Instructions
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... operating limits, the thermostat returns to sense room temperature. Attach the supply wires: a. Relay 2 controls Cool open (Y). Location The thermostats are wired via terminals W, Y, Gh, Gm, and Gl. Prepare the supply wires: a. Mounting on page 4). Read these instructions carefully. junction box: (1) Feed the supply wires through the opening in the adaptor plate. (2) Affix the adaptor plate to the wall. Relay 1 controls Heat open (W) or Cool open or Electrical heater output (Y/A). Radiant heat...
... operating limits, the thermostat returns to sense room temperature. Attach the supply wires: a. Relay 2 controls Cool open (Y). Location The thermostats are wired via terminals W, Y, Gh, Gm, and Gl. Prepare the supply wires: a. Mounting on page 4). Read these instructions carefully. junction box: (1) Feed the supply wires through the opening in the adaptor plate. (2) Affix the adaptor plate to the wall. Relay 1 controls Heat open (W) or Cool open or Electrical heater output (Y/A). Radiant heat...
Installation Instructions
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... secure the thermostat main body to the terminals. Terminal Wiring Table 3 provides the terminal wiring for each model and application. If using the adaptor plate, press the adaptor plate screw cover into place. 6. NOTE: The TB6575A1000 and TB6575B1000 models have the following meaning: • C: Common 24 Vac • Gh: High speed fan relay • Gl: Low speed fan relay • Gm: Medium speed fan relay • L: Line voltage power (120...
... secure the thermostat main body to the terminals. Terminal Wiring Table 3 provides the terminal wiring for each model and application. If using the adaptor plate, press the adaptor plate screw cover into place. 6. NOTE: The TB6575A1000 and TB6575B1000 models have the following meaning: • C: Common 24 Vac • Gh: High speed fan relay • Gl: Low speed fan relay • Gm: Medium speed fan relay • L: Line voltage power (120...
Installation Instructions
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... DIGITAL FAN COIL THERMOSTATS • Sc: Ground (required if remote sensor, pipe sensor, and/or remote setback are optional. Heat only 2 pipes; Heat and Cool with Auxiliary Heat 9 W/Y A 9 9 9 9 O R O 9 4 pipes; Heat or Cool with Manual Changeover 4 pipes; Cool only 2 pipes; Heat only 9W 99 9 9 ORO 2 pipes; Heat or Cool with Auxiliary Heat 9W 9W 9 W/Y Y 99 9 9 ORO Y 99 9 9 ORO A 99 9 9 OR O9 4 pipes; Heat or Cool with Manual Changeover 9 W/Y 99 9 9 ORO 2 pipes; Rs and SB terminal connections...
... DIGITAL FAN COIL THERMOSTATS • Sc: Ground (required if remote sensor, pipe sensor, and/or remote setback are optional. Heat only 2 pipes; Heat and Cool with Auxiliary Heat 9 W/Y A 9 9 9 9 O R O 9 4 pipes; Heat or Cool with Manual Changeover 4 pipes; Cool only 2 pipes; Heat only 9W 99 9 9 ORO 2 pipes; Heat or Cool with Auxiliary Heat 9W 9W 9 W/Y Y 99 9 9 ORO Y 99 9 9 ORO A 99 9 9 OR O9 4 pipes; Heat or Cool with Manual Changeover 9 W/Y 99 9 9 ORO 2 pipes; Rs and SB terminal connections...
Installation Instructions
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... T T T T Remote Temperature Sensor Wiring The TR21 is an optional remote temperature sensor that use the remote sensor. (See Table 4 on the application. - Shielded cable is required in the pipes to follow the installation instructions provided with auxiliary heat changeover. Device functions correctly even when not level. 7. Change pipe sensor thresholds for temperature averaging applications. Ground shield only to Rs and Sc thermostat terminals. 3. Remove sensor cover. 5. Disconnect power supply before servicing. Failure...
... T T T T Remote Temperature Sensor Wiring The TR21 is an optional remote temperature sensor that use the remote sensor. (See Table 4 on the application. - Shielded cable is required in the pipes to follow the installation instructions provided with auxiliary heat changeover. Device functions correctly even when not level. 7. Change pipe sensor thresholds for temperature averaging applications. Ground shield only to Rs and Sc thermostat terminals. 3. Remove sensor cover. 5. Disconnect power supply before servicing. Failure...
Installation Instructions
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.../TB8575 DIGITAL FAN COIL THERMOSTATS Thermostat Wiring Diagrams The figures in this section illustrate typical wiring for: • TB6575A1000 and TB6575B1000 fan coil thermostats, which is 24 Vac powered. L L (HOT) W/Y COOL VALVE Y/A GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps M27567 Fig. 8. L L (HOT) W/Y VALVE Y/A GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps PIPE SENSOR M27569 Fig. 10. Two pipes (Heat or Cool) Auto Changeover wiring diagram...
.../TB8575 DIGITAL FAN COIL THERMOSTATS Thermostat Wiring Diagrams The figures in this section illustrate typical wiring for: • TB6575A1000 and TB6575B1000 fan coil thermostats, which is 24 Vac powered. L L (HOT) W/Y COOL VALVE Y/A GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps M27567 Fig. 8. L L (HOT) W/Y VALVE Y/A GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps PIPE SENSOR M27569 Fig. 10. Two pipes (Heat or Cool) Auto Changeover wiring diagram...
Installation Instructions
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.... TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS . FAN MEDIUM SETTING WILL OPERATE ON HIGH SPEED. 3 CONNECT TERMINAL 7 TO THE MID FAN SPEED WIRE FROM THE PREVIOUS SYSTEM. 4 REWIRE THE PREVIOUS MID SPEED FAN WIRE TO THE NEUTRAL CIRCUIT IN THE SYSTEM. 5 CHANGE INSTALLER SETUP IS CODE 9 TO 2 FOR 2 SPEED FAN CONTROL. R W/Y COOL VALVE Y/A GI Gm FAN L1 Gh 24 VAC (HOT) C L2 1 Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps 1 POWER SUPPLY. R W/Y HEAT VALVE Y/A GI...
.... TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS . FAN MEDIUM SETTING WILL OPERATE ON HIGH SPEED. 3 CONNECT TERMINAL 7 TO THE MID FAN SPEED WIRE FROM THE PREVIOUS SYSTEM. 4 REWIRE THE PREVIOUS MID SPEED FAN WIRE TO THE NEUTRAL CIRCUIT IN THE SYSTEM. 5 CHANGE INSTALLER SETUP IS CODE 9 TO 2 FOR 2 SPEED FAN CONTROL. R W/Y COOL VALVE Y/A GI Gm FAN L1 Gh 24 VAC (HOT) C L2 1 Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps 1 POWER SUPPLY. R W/Y HEAT VALVE Y/A GI...
Installation Instructions
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... displays. 2. M27576 Fig. 17. Four pipes (Heat and Cool) Manual/Auto Changeover wiring diagram (24 Vac shown). Wiring diagram when missing a wire for electromechanical retrofit (24 Vac shown). If it is necessary to remove the thermostat from the subbase, refer to pull the thermostat straight away from the thermostat. 3. M27577 Fig. 18. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 6 CHANGE INSTALLER SETUP IS CODE 9 TO 2 FOR 2 SPEED FAN CONTROL. Disconnect power...
... displays. 2. M27576 Fig. 17. Four pipes (Heat and Cool) Manual/Auto Changeover wiring diagram (24 Vac shown). Wiring diagram when missing a wire for electromechanical retrofit (24 Vac shown). If it is necessary to remove the thermostat from the subbase, refer to pull the thermostat straight away from the thermostat. 3. M27577 Fig. 18. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 6 CHANGE INSTALLER SETUP IS CODE 9 TO 2 FOR 2 SPEED FAN CONTROL. Disconnect power...
Installation Instructions
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... 15 A/ 250 Vac. Installer Setup (ISU) Mode To enter Installer Setup Mode: • Press and hold both the System button (labeled Heat/Cool) and the Up Arrow button for three (3) seconds. NOTE: Exiting Installer Setup Mode is overloaded. Press the Up or Down Arrow buttons to its operating range, the temperature display resumes. SETUP The thermostat provides an LCD display, two buttons below the display for System and Fan control and two adjustment buttons (Up and Down) to...
... 15 A/ 250 Vac. Installer Setup (ISU) Mode To enter Installer Setup Mode: • Press and hold both the System button (labeled Heat/Cool) and the Up Arrow button for three (3) seconds. NOTE: Exiting Installer Setup Mode is overloaded. Press the Up or Down Arrow buttons to its operating range, the temperature display resumes. SETUP The thermostat provides an LCD display, two buttons below the display for System and Fan control and two adjustment buttons (Up and Down) to...
Installation Instructions
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...: Heat or Cool; Default is 80°F. 90 Changes to turn on mode display screen if analog Only displays when value 3 or 6 for Heating 75 to Range is selected. 1 2 Contact Open = Heat mode; Manual Changeover 3 Two pipes: Heat or Cool; ISU Option Option Description (Default value shown in test mode (see "Installer Test (IT) Mode" on page 13 for Aux Heat On 7 Four pipes: Manual and Auto Changeover (Default) 0 Fan ON when Auxiliary Heat is...
...: Heat or Cool; Default is 80°F. 90 Changes to turn on mode display screen if analog Only displays when value 3 or 6 for Heating 75 to Range is selected. 1 2 Contact Open = Heat mode; Manual Changeover 3 Two pipes: Heat or Cool; ISU Option Option Description (Default value shown in test mode (see "Installer Test (IT) Mode" on page 13 for Aux Heat On 7 Four pipes: Manual and Auto Changeover (Default) 0 Fan ON when Auxiliary Heat is...
Installation Instructions
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... number selected indicates the maximum times Cooling is locked out 2 Both the System and Fan buttons are locked out. 3 All buttons are locked out (System, Fan, Up Arrow, and Down Arrow). Default. All keys are chosen for the control method for Auxiliary 1 to 12 Range is -4°F to change between heating and cooling setpoints. Cool Setpoints are available (Default) 1 The System button (Heat/Cool) is cycled on per hour (CPH). 14 Display Temperature Adjustment 15 Temperature Display Mode...
... number selected indicates the maximum times Cooling is locked out 2 Both the System and Fan buttons are locked out. 3 All buttons are locked out (System, Fan, Up Arrow, and Down Arrow). Default. All keys are chosen for the control method for Auxiliary 1 to 12 Range is -4°F to change between heating and cooling setpoints. Cool Setpoints are available (Default) 1 The System button (Heat/Cool) is cycled on per hour (CPH). 14 Display Temperature Adjustment 15 Temperature Display Mode...
Installation Instructions
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... LCD screen on page 10. To enter the IT codes: 1. Press the System (Heat/Cool) button to store your value selection and display the next IT code. 13 62-0311-05 TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Stat cycles On Heat when room temperature reaches 40°F (4°C), and disables activate when the application is 79°F. Then, the two (2) hour timing begins. value 1). 2 Resets back to Auto...
... LCD screen on page 10. To enter the IT codes: 1. Press the System (Heat/Cool) button to store your value selection and display the next IT code. 13 62-0311-05 TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Stat cycles On Heat when room temperature reaches 40°F (4°C), and disables activate when the application is 79°F. Then, the two (2) hour timing begins. value 1). 2 Resets back to Auto...
Installation Instructions
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... regardless of the main temperature display to indicate the Setback is activated by a P+I ) CONTROL Like a mechanical thermostat, the fan coil thermostats have On/Off control output. Only used for economy setback via a button press on the remote setback input from an occupancy sensor, time switch, or hotel card key. Only the Analog pipe sensor is tested. 71 Software Main version 01-99 A 2-digit number, 01-99 72...
... regardless of the main temperature display to indicate the Setback is activated by a P+I ) CONTROL Like a mechanical thermostat, the fan coil thermostats have On/Off control output. Only used for economy setback via a button press on the remote setback input from an occupancy sensor, time switch, or hotel card key. Only the Analog pipe sensor is tested. 71 Software Main version 01-99 A 2-digit number, 01-99 72...
Installation Instructions
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..., the system switch provides "Off" and "Heat". VersaSpeed™ fan ramping algorithm illustration. The remote setback heating and remote setback cooling setpoints will stay in this operation until the next purge cycle occurs. 2 Pipes with Heat/Cool Setpoints deadband illustration. Auto Changeover with Auxiliary Heat For this application the system switch only provides "Off" and "Auto". When using the fan ramping algorithm. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Fig. 26...
..., the system switch provides "Off" and "Heat". VersaSpeed™ fan ramping algorithm illustration. The remote setback heating and remote setback cooling setpoints will stay in this operation until the next purge cycle occurs. 2 Pipes with Heat/Cool Setpoints deadband illustration. Auto Changeover with Auxiliary Heat For this application the system switch only provides "Off" and "Auto". When using the fan ramping algorithm. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Fig. 26...
Installation Instructions
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... Temperature After Purge Heat Mode Cool Mode > Threshold Valve (W/Y) Changeover. Use the Up and Down arrow buttons to heat operation and will occur every 2 hours to determine if there is changed via ISU code #10. The deadband is hot or cold water in Heat Valve (W/Y) for 2 Pipes with Auxiliary Heat applications, the thermostat will go into "Heat" or "Cool". Purge Cycles for heat Changeover. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Operation: After exiting the installer setup...
... Temperature After Purge Heat Mode Cool Mode > Threshold Valve (W/Y) Changeover. Use the Up and Down arrow buttons to heat operation and will occur every 2 hours to determine if there is changed via ISU code #10. The deadband is hot or cold water in Heat Valve (W/Y) for 2 Pipes with Auxiliary Heat applications, the thermostat will go into "Heat" or "Cool". Purge Cycles for heat Changeover. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Operation: After exiting the installer setup...
Installation Instructions
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... Action Display does not come on Heating equipment failure. temperature limits were reached. Check wiring. common, (terminals L and N). 2. Loose connection or broken wire between the heat (W) and common (N) terminals. If voltage is functional. For TB6575A/B: Check for 24 Vac between the heat (W) and common (N) terminals. time. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS TROUBLESHOOTING Table 8 provides troubleshooting information. Troubleshooting. System Type selection not Set the Installer Setup code #2 (System Type) to the correct value set to Heat or Cool or...
... Action Display does not come on Heating equipment failure. temperature limits were reached. Check wiring. common, (terminals L and N). 2. Loose connection or broken wire between the heat (W) and common (N) terminals. If voltage is functional. For TB6575A/B: Check for 24 Vac between the heat (W) and common (N) terminals. time. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS TROUBLESHOOTING Table 8 provides troubleshooting information. Troubleshooting. System Type selection not Set the Installer Setup code #2 (System Type) to the correct value set to Heat or Cool or...
Installation Instructions
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..., the thermostat is correct. Fan does not turn Cooling equipment failure. Fan Control Type selection is correct. Incorrect System Type configured. Check that the Installer Setup code #2 (System Type) value matches the installed heating and/or cooling equipment. Set the Installer Setup code #2 value to Heat and/or the setting above the room temperature. Remote sensor does Incorrect ISU code. Troubleshooting. (Continued) Symptom Possible Cause Action Cooling does not turn on Wiring or connection in the display). For...
..., the thermostat is correct. Fan does not turn Cooling equipment failure. Fan Control Type selection is correct. Incorrect System Type configured. Check that the Installer Setup code #2 (System Type) value matches the installed heating and/or cooling equipment. Set the Installer Setup code #2 value to Heat and/or the setting above the room temperature. Remote sensor does Incorrect ISU code. Troubleshooting. (Continued) Symptom Possible Cause Action Cooling does not turn on Wiring or connection in the display). For...
Installation Instructions
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... DIGITAL FAN COIL THERMOSTATS Table 8. Calling for Heat/Cool setpoint couldn't be satisfied. Troubleshooting. (Continued) Symptom Possible Cause Action Activity Sensing does All buttons are locked. value = 1). Only after the setpoint is Cool (ISU code #2; Freeze protection is not activated when system type is satisfied, will the auto fan reset timer activate. 19 62-0311-05 Auto Fan Reset does not activate Incorrect ISU code. System mode is set to Cool. Set the Installer Setup code...
... DIGITAL FAN COIL THERMOSTATS Table 8. Calling for Heat/Cool setpoint couldn't be satisfied. Troubleshooting. (Continued) Symptom Possible Cause Action Activity Sensing does All buttons are locked. value = 1). Only after the setpoint is Cool (ISU code #2; Freeze protection is not activated when system type is satisfied, will the auto fan reset timer activate. 19 62-0311-05 Auto Fan Reset does not activate Incorrect ISU code. System mode is set to Cool. Set the Installer Setup code...
Installation Instructions
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Rev. 10-10 Printed in U.S.A. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered Trademark © 2010 Honeywell International Inc. 62-0311-05 M.S.
Rev. 10-10 Printed in U.S.A. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Automation and Control Solutions Honeywell International Inc. 1985 Douglas Drive North Golden Valley, MN 55422 Honeywell Limited-Honeywell Limitée 35 Dynamic Drive Toronto, Ontario M1V 4Z9 customer.honeywell.com ® U.S. Registered Trademark © 2010 Honeywell International Inc. 62-0311-05 M.S.