Installation Instructions
Page 1
...; 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. • TB8575A1000 - 2-pipe or 4-pipe with a press of Digital Fan Coil thermostats for 4-pipe auto changeover. • Adjustable maximum heating and minimum cooling setpoint limits using a relay...
...; 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. • TB8575A1000 - 2-pipe or 4-pipe with a press of Digital Fan Coil thermostats for 4-pipe auto changeover. • Adjustable maximum heating and minimum cooling setpoint limits using a relay...
Installation Instructions
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... All 2 or 4 120 or 240 Vac TB6575B1000 Heat or 2 Cool 120 or 240 Vac TB8575A1000 All 2 or 4 24 Vac Features Number Energy Fan: On, Manual/ Remote Back of each model. If the safety fuse blows, the thermostat must be replaced. The fuse is pre-fitted...a vertical 2 x 4 in terminals located on the sub-base capable of 100 ohms. TB6575 - 9Vdc, < 4 mA; NOTES: 1. 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: • 20 to 120°...
... All 2 or 4 120 or 240 Vac TB6575B1000 Heat or 2 Cool 120 or 240 Vac TB8575A1000 All 2 or 4 24 Vac Features Number Energy Fan: On, Manual/ Remote Back of each model. If the safety fuse blows, the thermostat must be replaced. The fuse is pre-fitted...a vertical 2 x 4 in terminals located on the sub-base capable of 100 ohms. TB6575 - 9Vdc, < 4 mA; NOTES: 1. 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: • 20 to 120°...
Installation Instructions
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... and the opening of 18°C to 49°C (0°F to the supply wires using the screws provided. For the TB6575A1000 and TB6575B1000 models: (1) Push the fly lead wires through the wiring access hole in . For the TB8575A1000 model (which mounting screws are supplied (...Y, Gh, Gm, and Gl. Mounting on the product to follow them could damage the product or cause a hazardous condition. 2. 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 control element ...
... and the opening of 18°C to 49°C (0°F to the supply wires using the screws provided. For the TB6575A1000 and TB6575B1000 models: (1) Push the fly lead wires through the wiring access hole in . For the TB8575A1000 model (which mounting screws are supplied (...Y, Gh, Gm, and Gl. Mounting on the product to follow them could damage the product or cause a hazardous condition. 2. 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 control element ...
Installation Instructions
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...on the adaptor plate. 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. Thoroughly check the wiring to the terminals on the sub-base and snap the thermostat body into place. 6. Refer ...base and thermostat to the terminals. USE OUTER HOLES FOR MOUNTING TO A 4X4 WIRING BOX. 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 ...
...on the adaptor plate. 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. Thoroughly check the wiring to the terminals on the sub-base and snap the thermostat body into place. 6. Refer ...base and thermostat to the terminals. USE OUTER HOLES FOR MOUNTING TO A 4X4 WIRING BOX. 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 ...
Installation Instructions
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... 62-0311-05 Heat and Cool with Manual Changeover 4 pipes; 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 Gl Gm Gh N Rsa Scb SBc Psd 2 pipes; d Pipe sensor: Discrete, Analog, or Aquastat...Ps: Pipe sensor (optional) • R: 24 Vac power • Rs: Remote sensor (optional) • SB: Remote setback (optional) TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS • Sc: Ground (required if remote sensor, pipe sensor, and/or remote setback are optional. A = Electrical heater output Table 3. Heat or ...
... 62-0311-05 Heat and Cool with Manual Changeover 4 pipes; 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 Gl Gm Gh N Rsa Scb SBc Psd 2 pipes; d Pipe sensor: Discrete, Analog, or Aquastat...Ps: Pipe sensor (optional) • R: 24 Vac power • Rs: Remote sensor (optional) • SB: Remote setback (optional) TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS • Sc: Ground (required if remote sensor, pipe sensor, and/or remote setback are optional. A = Electrical heater output Table 3. Heat or ...
Installation Instructions
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...Rs Sc T4 T3 T4 T3 1 TR21-A 1 TR21-A 1 THE TR21-A IS A 10K OHM SENSOR. Attach pipe sensor to Rs and Sc thermostat terminals. 3. SUBBASE Rs Sc TR21 TR21 T T T T Remote Temperature Sensor Wiring The TR21 is recommended for appearance only. Disconnect power supply before...local electrical codes and ordinances or as necessary. 5. Level the sensor for wire runs longer than 100 ft. (30.5 m). 1. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Accessory Wiring Remote Pipe Sensor Wiring The remote pipe sensor is 1000 ft. (305 m). - M27559 Fig. 4. Ground shield only to Sc and...
...Rs Sc T4 T3 T4 T3 1 TR21-A 1 TR21-A 1 THE TR21-A IS A 10K OHM SENSOR. Attach pipe sensor to Rs and Sc thermostat terminals. 3. SUBBASE Rs Sc TR21 TR21 T T T T Remote Temperature Sensor Wiring The TR21 is recommended for appearance only. Disconnect power supply before...local electrical codes and ordinances or as necessary. 5. Level the sensor for wire runs longer than 100 ft. (30.5 m). 1. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Accessory Wiring Remote Pipe Sensor Wiring The remote pipe sensor is 1000 ft. (305 m). - M27559 Fig. 4. Ground shield only to Sc and...
Installation Instructions
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...HEAT VALVE Y/A COOL VALVE GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps M27570 Fig. 11. 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. Two .../240 Vac powered. L L (HOT) W/Y VALVE Y/A AUX GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK PIPE SENSOR Ps M27571 Fig. 12. L L (HOT) W/Y VALVE Y/A GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps M27568 Fig....
...HEAT VALVE Y/A COOL VALVE GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps M27570 Fig. 11. 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. Two .../240 Vac powered. L L (HOT) W/Y VALVE Y/A AUX GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK PIPE SENSOR Ps M27571 Fig. 12. L L (HOT) W/Y VALVE Y/A GI Gm FAN Gh N N Rs REMOTE SENSOR Sc SB REMOTE SETBACK Ps M27568 Fig....
Installation Instructions
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... 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. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS . PROVIDE DISCONNECT MEANS AND OVERLOAD... PROTECTION AS REQUIRED. L W/Y Y/A GI 1 Gm Gh 2 N Rs Sc SB Ps HEAT VALVE COOL VALVE L (HOT) 5 FAN 3 REMOTE SENSOR REMOTE SETBACK N4 1 REMOVE PRE-...
... 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. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS . PROVIDE DISCONNECT MEANS AND OVERLOAD... PROTECTION AS REQUIRED. L W/Y Y/A GI 1 Gm Gh 2 N Rs Sc SB Ps HEAT VALVE COOL VALVE L (HOT) 5 FAN 3 REMOTE SENSOR REMOTE SETBACK N4 1 REMOVE PRE-...
Installation Instructions
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... REMOTE SENSOR Sc SB REMOTE SETBACK Ps PIPE SENSOR 1 POWER SUPPLY. Use both hands to Fig. 21 and perform the following steps: 1. 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. Four pipes (Heat and Cool...
... REMOTE SENSOR Sc SB REMOTE SETBACK Ps PIPE SENSOR 1 POWER SUPPLY. Use both hands to Fig. 21 and perform the following steps: 1. 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. Four pipes (Heat and Cool...
Installation Instructions
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... the ISU codes, which display in the center of the operating range, the room temperature display shows two dashes, - -. The thermostat has a safety fuse rated at 15 A/ 250 Vac. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS UP AND DOWN ARROW BUTTONS Set to the current settings and status (including the text for the two buttons, System...
... the ISU codes, which display in the center of the operating range, the room temperature display shows two dashes, - -. The thermostat has a safety fuse rated at 15 A/ 250 Vac. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS UP AND DOWN ARROW BUTTONS Set to the current settings and status (including the text for the two buttons, System...
Installation Instructions
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..."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 on (Default) 1 Fan OFF when Auxiliary Heat is selected. 1 2 Contact Open = Heat mode; Contact Closed = Cool • mode Contact Open =...supply (Default) 1 240 Vac power supply 2 System Type 0 Heat only 1 Cool only 2 Two pipes: Heat or Cool; Table 4. Setup TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS M27585 Fig. 24. Installer Setup (ISU) Codes and Options. Contact Closed = Cool mode (same as 1) input (#4) is selected. 6 Pipe Sensor Threshold...
..."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 on (Default) 1 Fan OFF when Auxiliary Heat is selected. 1 2 Contact Open = Heat mode; Contact Closed = Cool • mode Contact Open =...supply (Default) 1 240 Vac power supply 2 System Type 0 Heat only 1 Cool only 2 Two pipes: Heat or Cool; Table 4. Setup TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS M27585 Fig. 24. Installer Setup (ISU) Codes and Options. Contact Closed = Cool mode (same as 1) input (#4) is selected. 6 Pipe Sensor Threshold...
Installation Instructions
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...is 90°F. The number selected indicates the maximum times Cooling is 1 to 90°F. Cool Setpoints are locked out (System, Fan, Up Arrow, and Down Arrow). Heat switching point = Available when Single setpoint - switching differential. Default is 3. 13 CPH for ...Auxiliary 1 to 12 Range is -4°F to 9. Default is 3. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Low speed only Hi and Low speed fans only 9.5 Fan Control Type 10 Control Method for 4-Pipe Auto Changeover 3 3 Speed Fan (Default) 0 Constant and Auto (Default) 1 Auto only 1 Single Setpoint (...
...is 90°F. The number selected indicates the maximum times Cooling is 1 to 90°F. Cool Setpoints are locked out (System, Fan, Up Arrow, and Down Arrow). Heat switching point = Available when Single setpoint - switching differential. Default is 3. 13 CPH for ...Auxiliary 1 to 12 Range is -4°F to 9. Default is 3. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Low speed only Hi and Low speed fans only 9.5 Fan Control Type 10 Control Method for 4-Pipe Auto Changeover 3 3 Speed Fan (Default) 0 Constant and Auto (Default) 1 Auto only 1 Single Setpoint (...
Installation Instructions
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...To enter Installer Test Mode: • Press and hold "Heat/Cool/ Off" button for 3 seconds and thermostat will not be selectable when ISU 19 is Cool only. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Installer Setup (ISU) Codes and Options. (Continued) ISU Option Option Description (Default value shown ...Arrow button for the currently displayed IT code. for 50 to Range is 72°F to Auto Only, (ISU code #9 - Stat cycles On Heat when room temperature reaches 40°F (4°C), and disables activate when the application is set to 90°F. This...
...To enter Installer Test Mode: • Press and hold "Heat/Cool/ Off" button for 3 seconds and thermostat will not be selectable when ISU 19 is Cool only. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 4. Installer Setup (ISU) Codes and Options. (Continued) ISU Option Option Description (Default value shown ...Arrow button for the currently displayed IT code. for 50 to Range is 72°F to Auto Only, (ISU code #9 - Stat cycles On Heat when room temperature reaches 40°F (4°C), and disables activate when the application is set to 90°F. This...
Installation Instructions
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...ISU code #2, value 3 or 6). However, this mode, the thermostat can quickly be setback by a P+I ) CONTROL Like a mechanical thermostat, the fan coil thermostats have On/Off control output. Only used for increased energy savings. The thermostat controls to the right of fan speed. When any key is for entering test mode, OPERATION Test..., the set point changes to access Installer Setup (ISU) and Installer Test (IT) remain enabled. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS NOTE: Exiting Installer Test Mode is the same as the method for economy setback via a button press on the...
...ISU code #2, value 3 or 6). However, this mode, the thermostat can quickly be setback by a P+I ) CONTROL Like a mechanical thermostat, the fan coil thermostats have On/Off control output. Only used for increased energy savings. The thermostat controls to the right of fan speed. When any key is for entering test mode, OPERATION Test..., the set point changes to access Installer Setup (ISU) and Installer Test (IT) remain enabled. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS NOTE: Exiting Installer Test Mode is the same as the method for economy setback via a button press on the...
Installation Instructions
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...ISU code #6) Cool *If pipe temperature is selected, the thermostat resets the fan to Auto. • Value = 1: The fan resets back to Auto after 2 hours. • Value = 2: The fan resets back to Auto after 4 hours. In this case, the thermostat will only changeover once the temperature falls into the appropriate mode...illustration. When there is in heating or cooling. This occurs on a seasonal basis from the boiler to the chiller. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Fig. 26 illustrates the relationship between the two threshold values after the 5 minute purge occurs, the...
...ISU code #6) Cool *If pipe temperature is selected, the thermostat resets the fan to Auto. • Value = 1: The fan resets back to Auto after 2 hours. • Value = 2: The fan resets back to Auto after 4 hours. In this case, the thermostat will only changeover once the temperature falls into the appropriate mode...illustration. When there is in heating or cooling. This occurs on a seasonal basis from the boiler to the chiller. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Fig. 26 illustrates the relationship between the two threshold values after the 5 minute purge occurs, the...
Installation Instructions
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...purge cycles to determine if there is used to determine when to change the setpoint. Switching points are exited, whenever the thermostat is switched from its "Off" position, and if the power is still between the heating setpoint and cooling setpoints. SWITCHING...above the cool switch point (Setpoint + Switching Differential), the thermostat will switch to Heat because Cool is sensing the correct mode during purges. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Operation: After exiting the installer setup, the thermostat will be available for heating. Table 7. Mode changes to...
...purge cycles to determine if there is used to determine when to change the setpoint. Switching points are exited, whenever the thermostat is switched from its "Off" position, and if the power is still between the heating setpoint and cooling setpoints. SWITCHING...above the cool switch point (Setpoint + Switching Differential), the thermostat will switch to Heat because Cool is sensing the correct mode during purges. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Operation: After exiting the installer setup, the thermostat will be available for heating. Table 7. Mode changes to...
Installation Instructions
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...240 Vac between R and C. Verify operation of the problem. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS TROUBLESHOOTING Table 8 provides troubleshooting information. Table 8. Troubleshooting. Symptom Possible Cause Action Display does not come on . Thermostat is not Cool (Cool on) but no operating. powered. Temperature settings ...to the correct value set to Heat or Cool or the to find the cause of equipment in Installer Test mode. Thermostat is running at the equipment between power and common (terminals R and C). 2. heating or cooling is calling Heating or...
...240 Vac between R and C. Verify operation of the problem. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS TROUBLESHOOTING Table 8 provides troubleshooting information. Table 8. Troubleshooting. Symptom Possible Cause Action Display does not come on . Thermostat is not Cool (Cool on) but no operating. powered. Temperature settings ...to the correct value set to Heat or Cool or the to find the cause of equipment in Installer Test mode. Thermostat is running at the equipment between power and common (terminals R and C). 2. heating or cooling is calling Heating or...
Installation Instructions
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...common (N) terminals. System Type setting is correct. Check the value selected for 120/240 Vac between the thermostat and the cooling equipment. Cannot select fan speed. mode. failure Check wiring and make sure the connection is not Set the Installer Setup code #2...Setup code #2) is not present, check the wire connection (loose or broken) between the cool (Y) and common (N) terminals. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 8. If voltage is set to Heat Only (value = 0). Loose connection or broken wire between the cool terminal (Y) and transformer common...
...common (N) terminals. System Type setting is correct. Check the value selected for 120/240 Vac between the thermostat and the cooling equipment. Cannot select fan speed. mode. failure Check wiring and make sure the connection is not Set the Installer Setup code #2...Setup code #2) is not present, check the wire connection (loose or broken) between the cool (Y) and common (N) terminals. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 8. If voltage is set to Heat Only (value = 0). Loose connection or broken wire between the cool terminal (Y) and transformer common...
Installation Instructions
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Auto Fan Reset does not activate Incorrect ISU code. value = 1). not exit when button pressed Make sure keypad lockout is not Off. Change System Type. Calling for ... System mode button to Off. Freeze protection is not activated when system type is satisfied, will the auto fan reset timer activate. 19 62-0311-05 Set ISU code #18, value = 0. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 8. Troubleshooting. (Continued) Symptom Possible Cause Action Activity Sensing does All buttons are locked. Only after the setpoint...
Auto Fan Reset does not activate Incorrect ISU code. value = 1). not exit when button pressed Make sure keypad lockout is not Off. Change System Type. Calling for ... System mode button to Off. Freeze protection is not activated when system type is satisfied, will the auto fan reset timer activate. 19 62-0311-05 Set ISU code #18, value = 0. TB6575/TB8575 DIGITAL FAN COIL THERMOSTATS Table 8. Troubleshooting. (Continued) Symptom Possible Cause Action Activity Sensing does All buttons are locked. Only after the setpoint...
Installation Instructions
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Rev. 10-10 Printed in U.S.A. Registered Trademark © 2010 Honeywell International Inc. 62-0311-05 M.S. 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.
Rev. 10-10 Printed in U.S.A. Registered Trademark © 2010 Honeywell International Inc. 62-0311-05 M.S. 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.
