Installation Instructions
Page 1
... applications that are available are suitable for multiple applications. TB6575/TB8575 Digital Fan Coil Thermostats PRODUCT DESCRIPTION The TB6575 and TB8575 are available for your application: • TB6575A1000 - 2-pipe or 4-pipe with seasonal/ manual/automatic heat/cool changeover; 120/240 Vac. • TB6575B1000 - 2-pipe only with seasonal or manual heat/cool changeover; 120/240 Vac...
... applications that are available are suitable for multiple applications. TB6575/TB8575 Digital Fan Coil Thermostats PRODUCT DESCRIPTION The TB6575 and TB8575 are available for your application: • TB6575A1000 - 2-pipe or 4-pipe with seasonal/ manual/automatic heat/cool changeover; 120/240 Vac. • TB6575B1000 - 2-pipe only with seasonal or manual heat/cool changeover; 120/240 Vac...
Installation Instructions
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... Light Input 3 speed Changeover 5 Yes Yes Yes Yes Yes 4 5 Pipe Sensorb Yes 62-0311-05 2 TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS SPECIFICATIONS Supply Voltages: TB6575A1000 and TB6575B1000: • 120 Vac ±10% at 50/60Hz • 240 Vac ±10% at 50/60Hz TB8575A1000: ...on page 3. Remote pipe sensor (20K Ohm) • W6380B1005 - Fan Coil Unit Relay Control Center • WSK-24 - Applications and Features Applications Models Heat/Cool/ Pipes Voltage Auto TB6575A1000 All 2 or 4 120 or 240 Vac TB6575B1000 Heat or 2 Cool 120 or 240 Vac TB8575A1000 All 2 or ...
... Light Input 3 speed Changeover 5 Yes Yes Yes Yes Yes 4 5 Pipe Sensorb Yes 62-0311-05 2 TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS SPECIFICATIONS Supply Voltages: TB6575A1000 and TB6575B1000: • 120 Vac ±10% at 50/60Hz • 240 Vac ±10% at 50/60Hz TB8575A1000: ...on page 3. Remote pipe sensor (20K Ohm) • W6380B1005 - Fan Coil Unit Relay Control Center • WSK-24 - Applications and Features Applications Models Heat/Cool/ Pipes Voltage Auto TB6575A1000 All 2 or 4 120 or 240 Vac TB6575B1000 Heat or 2 Cool 120 or 240 Vac TB8575A1000 All 2 or ...
Installation Instructions
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... the supply wires: a. For the TB8575A1000 model (which mounting screws are supplied (see Fig. 2 on page 4). 1. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS a The five relays are line voltage powered devices. NOTE: In 2-pipe configurations without Auxiliary Heat, only 4 relays are the temperature ...protect feature should be a trained and experienced service technician. horizontal junction box (see Fig. 3 on page 4). For the TB6575A1000 and TB6575B1000 models: (1) Push the fly lead wires through the opening in . Dimensions in . A display of the device operating range. or ...
... the supply wires: a. For the TB8575A1000 model (which mounting screws are supplied (see Fig. 2 on page 4). 1. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS a The five relays are line voltage powered devices. NOTE: In 2-pipe configurations without Auxiliary Heat, only 4 relays are the temperature ...protect feature should be a trained and experienced service technician. horizontal junction box (see Fig. 3 on page 4). For the TB6575A1000 and TB6575B1000 models: (1) Push the fly lead wires through the opening in . Dimensions in . A display of the device operating range. or ...
Installation Instructions
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TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS (1) Attach the supply wires directly to the sub-base before finally mounting the thermostat on the wall. 5. SUBBASE MOUNT SUBBASE TO HORIZONTAL 2X4 JUNCTION BOX USING TWO SCREWS SNAP MAIN BODY ONTO SUBBASE INSERT ...on a horizontal 2 x 4 in . Mounting sub-base and thermostat to the terminals. 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 (120/240 Vac) ...
TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS (1) Attach the supply wires directly to the sub-base before finally mounting the thermostat on the wall. 5. SUBBASE MOUNT SUBBASE TO HORIZONTAL 2X4 JUNCTION BOX USING TWO SCREWS SNAP MAIN BODY ONTO SUBBASE INSERT ...on a horizontal 2 x 4 in . Mounting sub-base and thermostat to the terminals. 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 (120/240 Vac) ...
Installation Instructions
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...; SB: Remote setback (optional) TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS • Sc: Ground (required if remote sensor, pipe sensor, and/or remote setback are optional. Heat or Cool with Manual Changeover or Auto Changeover 9 W Y 99 9 9 ORO a Rs; Heat or Cool with Manual Changeover or Auto Changeover 9 W Y 99 9 9 ORO TB6575B1000 - 120/240 Vac Terminal Identifier L W/Y n/ai... 9 W/Y 9W 9W 99 9 9 OR O9 Y 99 9 9 ORO Y 99 9 9 ORO 2 pipes; Heat only 9W 99 9 9 ORO 2 pipes; Remote sensor is wired. i Terminal 3 is used on the TB6575B1000 model.
...; SB: Remote setback (optional) TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS • Sc: Ground (required if remote sensor, pipe sensor, and/or remote setback are optional. Heat or Cool with Manual Changeover or Auto Changeover 9 W Y 99 9 9 ORO a Rs; Heat or Cool with Manual Changeover or Auto Changeover 9 W Y 99 9 9 ORO TB6575B1000 - 120/240 Vac Terminal Identifier L W/Y n/ai... 9 W/Y 9W 9W 99 9 9 OR O9 Y 99 9 9 ORO Y 99 9 9 ORO 2 pipes; Heat only 9W 99 9 9 ORO 2 pipes; Remote sensor is wired. i Terminal 3 is used on the TB6575B1000 model.
Installation Instructions
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...2 pipes heat and cool with the remote sensor. Mount sensor to provide a temperature averaging network. Replace sensor cover. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Accessory Wiring Remote Pipe Sensor Wiring The remote pipe sensor is set to use a 20k Ohm curve may be used as the ...to provide a temperature averaging network. 62-0311-05 6 Wiring two TR21 (20K ohm) sensors and one foot away from the thermostat to Rs and Sc thermostat terminals. 3. Wire sensor to a wall module is recommended for appearance only. M27561 Fig. 6. Disconnect power supply before servicing....
...2 pipes heat and cool with the remote sensor. Mount sensor to provide a temperature averaging network. Replace sensor cover. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Accessory Wiring Remote Pipe Sensor Wiring The remote pipe sensor is set to use a 20k Ohm curve may be used as the ...to provide a temperature averaging network. 62-0311-05 6 Wiring two TR21 (20K ohm) sensors and one foot away from the thermostat to Rs and Sc thermostat terminals. 3. Wire sensor to a wall module is recommended for appearance only. M27561 Fig. 6. Disconnect power supply before servicing....
Installation Instructions
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... N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK PIPE SENSOR Ps M27571 Fig. 12. TB6575/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. Refer to Fig. 7-Fig. 13, beginning on page 8. 120/240 Vac Wiring Diagrams (TB6575A/ B) L L (HOT) W/Y HEAT...
... N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK PIPE SENSOR Ps M27571 Fig. 12. TB6575/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. Refer to Fig. 7-Fig. 13, beginning on page 8. 120/240 Vac Wiring Diagrams (TB6575A/ B) L L (HOT) W/Y HEAT...
Installation Instructions
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...Diagrams (TB8575) For the TB8575A1000 model, a 24 Vac Class 2 NEMA rated transformer must be used. 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. Two pipes Cool-only wiring ... R W/Y 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. M31328 Fig. 13. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS . R W/Y HEAT VALVE Y/A GI Gm FAN L1 Gh 24 VAC (HOT) C...
...Diagrams (TB8575) For the TB8575A1000 model, a 24 Vac Class 2 NEMA rated transformer must be used. 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. Two pipes Cool-only wiring ... R W/Y 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. M31328 Fig. 13. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS . R W/Y HEAT VALVE Y/A GI Gm FAN L1 Gh 24 VAC (HOT) C...
Installation Instructions
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... the bottom of electrical shock. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 6 CHANGE INSTALLER SETUP IS CODE 9 TO 2 FOR 2 SPEED FAN CONTROL. M31329 Fig. 20. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS R W/Y VALVE Y/A GI Gm FAN Gh 24 VAC L1 (HOT) C L2 1 Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps PIPE SENSOR 1 POWER SUPPLY. R W/Y HEAT VALVE...
... the bottom of electrical shock. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 6 CHANGE INSTALLER SETUP IS CODE 9 TO 2 FOR 2 SPEED FAN CONTROL. M31329 Fig. 20. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS R W/Y VALVE Y/A GI Gm FAN Gh 24 VAC L1 (HOT) C L2 1 Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps PIPE SENSOR 1 POWER SUPPLY. R W/Y HEAT VALVE...
Installation Instructions
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...setup mode. This fuse is provided as a safety feature to prevent fire if the thermostat is the same as shown in the upper right following the word Setup. 2. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS UP AND DOWN ARROW BUTTONS Set to store your value selection and display the next ...ISU code. 62-0311-05 10 SYSTEM BUTTON FAN BUTTON M27586 Fig. 23. To enter the setup parameters: 1. Removing the thermostat. After the desired value displays,...
...setup mode. This fuse is provided as a safety feature to prevent fire if the thermostat is the same as shown in the upper right following the word Setup. 2. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS UP AND DOWN ARROW BUTTONS Set to store your value selection and display the next ...ISU code. 62-0311-05 10 SYSTEM BUTTON FAN BUTTON M27586 Fig. 23. To enter the setup parameters: 1. Removing the thermostat. After the desired value displays,...
Installation Instructions
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... Contact Open = Heat mode; Default. 1 Degrees Celsius (°C). 11 62-0311-05 Installer Setup (ISU) Codes and Options. Setup TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS M27585 Fig. 24. Only displays when system type 3 or 6 is selected. 6 Pipe Sensor Threshold for Aux Heat On 7 Four pipes: Manual... Notes TB6575A, TB8575A only TB6575A, TB8575A only Allows auxiliary heat to 72°F. with Auxiliary Heat (requires optional pipe sensor). 2.5 Fan On/Off Selection for Cooling 50 to Range is on when pipes have cold water (TB6575A, TB8575A only). Contact Closed = Cool ...
... Contact Open = Heat mode; Default. 1 Degrees Celsius (°C). 11 62-0311-05 Installer Setup (ISU) Codes and Options. Setup TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS M27585 Fig. 24. Only displays when system type 3 or 6 is selected. 6 Pipe Sensor Threshold for Aux Heat On 7 Four pipes: Manual... Notes TB6575A, TB8575A only TB6575A, TB8575A only Allows auxiliary heat to 72°F. with Auxiliary Heat (requires optional pipe sensor). 2.5 Fan On/Off Selection for Cooling 50 to Range is on when pipes have cold water (TB6575A, TB8575A only). Contact Closed = Cool ...
Installation Instructions
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... 90°F. Range is -4°F to 6 Heat and Cool Setpoints (2 setpoint method) Uses a deadband of Fan Speeds 1 Disable - Low speed only Hi and Low speed fans only 9.5 Fan Control Type 10 Control Method for 4pipe Auto (ISU 10) Range is 0°F. 0 1 2 50 to 90... Electrical Heater The number selected indicates the maximum times Heating is 50°F. Default is cycled on per hour (CPH). TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Deadband = minimum Available when Heat and distance between heating and cooling and controls to a single setpoint (Only displayed for ...
... 90°F. Range is -4°F to 6 Heat and Cool Setpoints (2 setpoint method) Uses a deadband of Fan Speeds 1 Disable - Low speed only Hi and Low speed fans only 9.5 Fan Control Type 10 Control Method for 4pipe Auto (ISU 10) Range is 0°F. 0 1 2 50 to 90... Electrical Heater The number selected indicates the maximum times Heating is 50°F. Default is cycled on per hour (CPH). TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Deadband = minimum Available when Heat and distance between heating and cooling and controls to a single setpoint (Only displayed for ...
Installation Instructions
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... (Heat/Cool) button to 90°F. Notes 3 Hotel Card enabled N.O. Heating 70 Used when the thermostat is 72°F to cycle through the values for 50 to UnOccupied. Stat cycles On Heat when room temperature reaches 40°F (4°C), and disables activate when the application is ... Only, (ISU code #9 - After the desired value displays, press the System button to UnOccupied. 2 Hotel Card enabled N.C. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Installer Test (IT) Mode To enter Installer Test Mode: • Press and hold "Heat/Cool/ Off" button for 3 seconds and...
... (Heat/Cool) button to 90°F. Notes 3 Hotel Card enabled N.O. Heating 70 Used when the thermostat is 72°F to cycle through the values for 50 to UnOccupied. Stat cycles On Heat when room temperature reaches 40°F (4°C), and disables activate when the application is ... Only, (ISU code #9 - After the desired value displays, press the System button to UnOccupied. 2 Hotel Card enabled N.C. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Installer Test (IT) Mode To enter Installer Test Mode: • Press and hold "Heat/Cool/ Off" button for 3 seconds and...
Installation Instructions
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... is regulated by a P+I ) CONTROL Like a mechanical thermostat, the fan coil thermostats have On/Off control output. When any key is active, all buttons on the thermostat are disabled. When Remote Setback is pressed, the thermostat controls to Occupied mode. Only used for System Type 3...or hotel card key. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS NOTE: Exiting Installer Test Mode is pressed) for the duration selected, the thermostat automatically falls back into the Economy Setback. PROPORTIONAL + INTEGRAL (P+I algorithm, enabling the thermostat to control closer to the remote ...
... is regulated by a P+I ) CONTROL Like a mechanical thermostat, the fan coil thermostats have On/Off control output. When any key is active, all buttons on the thermostat are disabled. When Remote Setback is pressed, the thermostat controls to Occupied mode. Only used for System Type 3...or hotel card key. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS NOTE: Exiting Installer Test Mode is pressed) for the duration selected, the thermostat automatically falls back into the Economy Setback. PROPORTIONAL + INTEGRAL (P+I algorithm, enabling the thermostat to control closer to the remote ...
Installation Instructions
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... 28. It will stay in auto, the thermostat will be de-energized. If after 4 hours. Fig. 27 illustrates the unoccupied deadband when Economy Setback is enabled, the setpoint will be available. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Fig. 26 illustrates the relationship between the two... thresholds, the valve output will be disabled and only manual fan will revert to a dual heat/cool setpoint approach. For 4 pipe...
... 28. It will stay in auto, the thermostat will be de-energized. If after 4 hours. Fig. 27 illustrates the unoccupied deadband when Economy Setback is enabled, the setpoint will be available. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Fig. 26 illustrates the relationship between the two... thresholds, the valve output will be disabled and only manual fan will revert to a dual heat/cool setpoint approach. For 4 pipe...
Installation Instructions
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... on calls for heat 4 PIPES AUTO CHANGEOVER Single Set Point Method In 4 pipe auto changeover with Auxiliary Heat applications, the thermostat will run purge cycles to the setpoint. Switching points are illustrated in Fig. 30. Purge Cycles for 2 Pipe Seasonal Changeover ...Cool". The deadband is always controlled to determine if there is between heating and cooling modes. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Operation: After exiting the installer setup, the thermostat will occur when it is switched back into the appropriate mode as described by Table 7. A 5 minute...
... on calls for heat 4 PIPES AUTO CHANGEOVER Single Set Point Method In 4 pipe auto changeover with Auxiliary Heat applications, the thermostat will run purge cycles to the setpoint. Switching points are illustrated in Fig. 30. Purge Cycles for 2 Pipe Seasonal Changeover ...Cool". The deadband is always controlled to determine if there is between heating and cooling modes. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Operation: After exiting the installer setup, the thermostat will occur when it is switched back into the appropriate mode as described by Table 7. A 5 minute...
Installation Instructions
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...TB6575A/B: Check for 24 Vac between power and the display). matches the installed heating and/or cooling equipment. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS TROUBLESHOOTING Table 8 provides troubleshooting information. Troubleshooting. Symptom Possible Cause Action Display does not come on ) or equipment is calling... the same Heating and cooling wires Separate the shorted heating and cooling wires. operation of the transformer between R and C. Thermostat is not Cool (Cool on Heating equipment failure. Check wiring. Check that the Installer Setup code #2 (System Type) ...
...TB6575A/B: Check for 24 Vac between power and the display). matches the installed heating and/or cooling equipment. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS TROUBLESHOOTING Table 8 provides troubleshooting information. Troubleshooting. Symptom Possible Cause Action Display does not come on ) or equipment is calling... the same Heating and cooling wires Separate the shorted heating and cooling wires. operation of the transformer between R and C. Thermostat is not Cool (Cool on Heating equipment failure. Check wiring. Check that the Installer Setup code #2 (System Type) ...
Installation Instructions
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... Setup code #4 to match the installed heating and/or cooling equipment. Remote setpoint error. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 8. Check for 120/240 Vac between the thermostat and the cooling equipment. Cannot set to Cool. Cool On is set above the room temperature. Check... that the Installer Setup code #9 (Fan Control) value is set the system System Type (Installer setting to zero (0). ...
... Setup code #4 to match the installed heating and/or cooling equipment. Remote setpoint error. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 8. Check for 120/240 Vac between the thermostat and the cooling equipment. Cannot set to Cool. Cool On is set above the room temperature. Check... that the Installer Setup code #9 (Fan Control) value is set the system System Type (Installer setting to zero (0). ...
Installation Instructions
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... 62-0311-05 Set the Installer Setup code #24 to Off. Freeze Protection does not activate System Type is disabled. Change System Type. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 8. not exit when button pressed Make sure keypad lockout is set to Cool. Set the System mode button to Enabled (value = 1 or 2). Freeze protection...
... 62-0311-05 Set the Installer Setup code #24 to Off. Freeze Protection does not activate System Type is disabled. Change System Type. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 8. not exit when button pressed Make sure keypad lockout is set to Cool. Set the System mode button to Enabled (value = 1 or 2). Freeze protection...
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.