Fan Coil Thermostat Controller Specification and Installation Instructions TFC24F3XYZ3-150811 Page | 1 Model TFC24F3XYZ3 with 7 Day Schedule Description The TFC24F3XYZ3 is a fully configurable controller designed specifically for 2 pipe and 4 pipe fan coil applications. No additional modules are required as the required inputs, outputs and control algorithms are built into the unit. TFC24F3XYZ3 Applications Heating, cooling and reheat 2 pipes or 4 pipes Auxiliary heating sources, such as electric baseboards, can also be applied Features Backlit LCD with simple icon and text driven menus Configurable inputs and outputs 2 Pipes with Analog, ON/OFF, or Floating option 4 Pipes with Analog, ON/OFF, or with local reheat function 7 day Programmable Schedule 2 or 4 daily events Temporary Setpoint Override Precise temperature control with programmable PI function Selectable Fahrenheit or Celsius scale Independent cool and heat setpoint for No Occupancy Lockable setpoint, control mode, and fan mode Selectable internal or external temperature sensor Changeover by contact or external temperature sensor Selectable proportional control band and dead band Anti-freeze protection Typical Application Fan coil applications provide heating and cooling to a zone by circulating hot and cold air depending on the demand to maintain an optimum temperature in the selected space. A fan coil setup typically consists of fan coil units, source for hot and cold water, and a pipe system for distribution. When there is a demand for heating, the hot water is supplied to the unit through the source and passes over the heating coil, and the hot air is pushed into the zone by the fan. When there is a demand for cooling, the cold water is supplied to the unit through the source and passes over the cooling coil, and the cold air is pushed into the zone by the fan. * Consult www.neptronic.com for details on these Neptronic products. Technical Specifications Description Fan Coil Thermostat Controller Inputs 1 Analog input (external temperature sensor 10Kohms) 1 Analog input (change over 10Kohms or dry contact) Outputs 1 Fan analog or 3 Fan speed dry contracts 24Vac, 1A max 3A in-rush 2 Analog outputs (cooling and/or heating 0 to 10Vdc) 1 Analog output (local reheat 0 to 10Vdc) 2 TRIAC outputs (cooling and/or heating) 24Vac, 0.3A max fused/TRIAC 1 TRIAC output (local reheat) 24Vac, 0.3A max fused/TRIAC Power Supply 22 to 26Vac 50/60Hz Power Consumption 1VA max Setpoint Range 10ºC to 40ºC [50ºF to 104ºF] Control Accuracy Temperature: ±0.4ºC [0.8ºF] Proportional Band 0.5ºC to 5ºC [1ºF to 10ºF] adjustable (heat/cool/reheat independent) Dead Band 0ºC to 5ºC [0ºF to 10ºF] adjustable (heat/cool/reheat independent) Electrical Connection 0.8 mm 2 [18 AWG] minimum Operating Temperature 0ºC to 50ºC [32ºF to 122ºF] Storage Temperature -30ºC to 50ºC [-22ºF to 122ºF] Relative Humidity 5 to 95% RH non condensing Degree of Protection of Housing IP 30 (EN 60529) Weight 160 g. [0.36 lb] Fan Coil Thermostat Controller Specification and Installation Instructions www.neptronic.com Page | 2 Description Fan Coil Thermostat Controller Dimensions A = 2.85” | 73mm B = 4.85” | 123mm C = 1.00” | 24mm D = 2.36” | 60mm E = 3.27” | 83mm Interface Symbols on Display Cooling ON A: Automatic Alarm status or ºC: Celsius scale ºF: Fahrenheit scale Heating ON A: Automatic Menu set-up Lock Morning Fan ON A: Automatic Programming Mode (Technician setting) Day Night Day Evening Morning Afternoon Day of the week Wiring We strongly recommend that all Neptronic products be wired to a separate grounded transformer and that transformer shall service only Neptronic products. This precaution will prevent interference with, and/or possible damage to incompatible equipment. C F %RH . . . . TB1 1 2 3 4 5 6 7 8 9 1 0 1 1 1 2 1 3 1 4 1 5 1 6 JP3 P G M R U N JP1 JP4 Mode Selector (JP3) Connecting Strip (TB1) Fan Output Signal Selector (JP4) Digital Output Signal Selector (JP2) JP2 A B C C B A A B C A B C Fan Coil Thermostat Controller Specification and Installation Instructions www.neptronic.com Page | 3 Wiring - 2 Pipe Terminal Description Details - 2 Pipe For 2 pipe signal configuration, refer to step 4 on page 5. For fan output configuration, refer to step 28 on page 8. Terminals Analog On/Off Floating Step 1 Common Common Common Common - 2 24 Vac 24 Vac 24 Vac 24 Vac - 3 Common TRIAC Common TRIAC Common TRIAC Common TRIAC 4 TRIAC Output 1 (TO1) - 2 pipe on/off 2 pipe floating (close) 4 5 TRIAC Output 2 (TO2) - - 2 pipe floating (open) 4 6 TRIAC Output 3 (TO3) Local reheat * Local reheat * Local reheat * 16 Fan 1 speed 2 speed 3 speed Analog 1 speed 2 speed 3 speed Analog 1 speed 2 speed 3 speed Analog 7 Common Relay Common Relay Common Relay Common Relay 8 Digital Output 1 (DO1) - - High - - - High - - - High - 28 9 Digital Output 2 (DO2) - High Med - - High Med - - High Med - 28 10 Digital Output 3 (DO3) Low Low Low AO4 Low Low Low AO4 Low Low Low AO4 28 11 Not used - - - - 12 Analog Input (AI1) External Temp Sensor * External Temp Sensor * External Temp Sensor * 33 13 Analog Input (AI2) External Changeover * External Changeover * External Changeover * 8 14 Analog Output 1 (AO1) 2 pipe analog - - 4 15 Analog Output 2 (AO2) - - - 4 16 Analog Output 3 (AO3) Local reheat * Local reheat * Local reheat * 16 * optional Wiring - 4 Pipe Terminal Description Details - 4 Pipe For 4 pipe signal configuration, refer to step 15 and 13 on page 6. For fan output configuration, refer to step 28 on page 8. Terminals Cool: Analog Heat: Analog Cool: On/Off Heat: On/Off Cool: Analog Heat: On/Off or Pulse Cool: On/Off Heat: Analog Step 1 Common Common Common Common Common - 2 24 Vac 24 Vac 24 Vac 24 Vac 24 Vac - 3 Common TRIAC Common TRIAC Common TRIAC Common TRIAC Common TRIAC 4 TRIAC Output 1 (TO1) - 4 pipe cool (on/off) - 4 pipe cool (on/off) 9 5 TRIAC Output 2 (TO2) - 4 pipe heat (on/off or pulse) 4 pipe heat (on/off or pulse) - 9 6 TRIAC Output 3 (TO3) Local reheat * Local reheat * Local reheat * Local reheat * 16 Fan 1 speed 2 speed 3 speed Analog 1 speed 2 speed 3 speed Analog 1 speed 2 speed 3 speed Analog 1 speed 2 speed 3 speed Analog 7 Common Relay Common Relay Common Relay Common Relay Common Relay 8 Digital Output 1 (DO1) - - High - - - High - - - High - - - High - 33 9 Digital Output 2 (DO2) - High Med - - High Med - - High Med - - High Med - 33 10 Digital Output 3 (DO3) Low Low Low AO4 Low Low Low AO4 Low Low Low AO4 Low Low Low AO4 33 11 Not used - - - - - 12 Analog Input (AI1) External Temp Sensor * External Temp Sensor * External Temp Sensor * External Temp Sensor * - 13 Analog Input (AI2) - - - - 8 14 Analog Output 1 (AO1) 4 pipe cool (analog) - 4 pipe cool (analog) - 13 15 Analog Output 2 (AO2) 4 pipe heat (analog) - - 4 pipe heat (analog) 10 16 Analog Output 3 (AO3) Local reheat (analog)* Local reheat (analog)* Local reheat (analog)* Local reheat (analog)* 16 * optional Jumpers Jumpers Description JP1 TRIAC Output Signal Selector A&B = Internal: All TRIAC output signals are linked to internal 24 Vac (same as thermostat). B&C = External: All TRIAC output signals are linked to external 24 Vac (different than thermostat). JP2 Digital Output Signal Selector A&B = Internal: All digital output signals are linked to internal 24 Vac (same as thermostat). B&C = External: All digital output signals is linked to external 24 Vac (different than thermostat). JP3 Mode Selection A&B = RUN: Thermostat is in Operation Mode. (See Operation Mode, page 14) B&C = PGM: Thermostat is in Programming Mode. (See Programming Mode, page 4) JP4 Fan Output Signal Selection A&B: Pin 10 of TB1 is set to digital output signal (DO3). (See Step 28) B&C: Pin 10 of TB1 is set to analog output signal (AO4). (See Step 28) Fan Coil Thermostat Controller Specification and Installation Instructions www.neptronic.com Page | 4 Mounting Instructions CAUTION: Remove power to avoid a risk of malfunction. A. Remove the captive screw that’s holding the base and the front cover of the unit together. B. Lift the front cover of the unit to separate it from the base. C. Pull all wires through the holes in the base. D. Secure the base to the wall using wall anchors and screws (supplied). Make the appropriate connections. E. Mount the control module on the base and secure using the screw. Programming Mode The Mode Selector Jumper JP3 must be set to the “PGM” mode (Programming Mode). Refer to Wiring on page 2. To exit, set the Jumper JP3 back to the “RUN” mode (Operation Mode). All changes will be saved. Symbols used in this Manual Icon Description Icon Description Icon Description Icon Description Temperature Heating Cooling Analog Output 1 Fan Coil Fan Pipe Event Time Setpoint and User Control Range: Offset Increment: 10.0ºC to 40.0ºC [50ºF to 104.0ºF] Max. ± 5ºC 0.1ºC [0.2ºF] Compare the displayed temperature reading with a known value from a thermometer. To offset or calibrate the sensor, use the arrows button to set the desired temperature reading. This is useful for thermostats installed in areas where the temperature read is slightly different than the room’s actual temperature. For example, a thermostat placed right under the air diffuser. A E D C B C Fan Coil Thermostat Controller Specification and Installation Instructions www.neptronic.com Page | 5 Default: Range: Yes (Enable) Yes (Enable)/No (Disable) If you select Yes, the user can set the unit to “Off” via the Control Mode (see page 15). If you select No, the “Off” selection does not appear in the Control Mode. Pipe System Selection Default: Range: 2P (2 pipe) 2P (2 pipe)/4P (4 pipe) Select the number of pipes that you want to use. If you selected the 4 pipes option, go to Step 10. Default: Range: AnLG (Analog) AnLG (Analog), OnOf (On/Off), Flt (Floating) Select the desired signal output for your 2 pipe system from the available options. The cooling and heating symbols are also displayed. If you select analog signal, AO1 will be set to automatic heat/cool changeover. If you select OnOf, TO1 will be set to automatic heat/cool changeover. If you select Flt, TO1 will be set to close and TO2 will be set to open. If you selected AnLG (analog) signal, go to Step 6. If you selected OnOf (on/off) signal, go to Step 8. Default: Range: Increment: 100 seconds 15 to 250 seconds 5 seconds This option appears if you have selected Flt at step 4. Select the desired value for the floating time signal and go to Step 8. Outputs Default: Range: Increment: 0.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired minimum voltage (zero value) for the analog ramp. The minimum value (Step 6) is restricted by the maximum value (Step 7). In other words, the minimum value should be less than the maximum value. Default: Range: Increment: 10.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired maximum voltage (span value) for the analog ramp. The maximum value (Step 7) is restricted by the minimum value (Step 6). In other words, the maximum value should be greater than the minimum value. Default: Range: SENs (External Changeover Sensor) SENs, NoCl, NoHt If SENs is selected: heating mode activates when the temperature read by the external sensor is above the Changeover Setpoint and cooling mode activates when the temperature read by the external sensor is below the Changeover Setpoint. (see Step 9) If NoHt is selected: heating mode activates if the contact is opened and the cooling mode activates if the contact is closed. (see Step 9) If NoCl is selected: heating mode activates if the contact is closed and cooling mode activates if the contact is open. If you selected NoCl or NoHt option, go to Step 16. Fan Coil Thermostat Controller Specification and Installation Instructions www.neptronic.com Page | 6 Default: Range: Increment: 24.0ºC [75ºF] 10.0ºC to 40.0ºC [50ºF to 104ºF] 0.5ºC [1ºF] This option appears if you have set one of the analog inputs to SENs (External Changeover Sensor) at Step 8. Set the desired changeover temperature setpoint. Note that the heating mode activates when the temperature read by the external sensor is above the changeover setpoint and cooling mode activates when the temperature read by the external sensor is below the changeover setpoint. Go to Step 16. Default: Range: AnLG (Analog) AnLG (Analog), OnOf (On/Off), PULs (Pulse) This option appears if you have selected 4P at Step 3. Select the heating signal for your 4 pipe system. If you select AnLG (Analog), AO2 will be set to heating. If you select OnOf (On/Off), or PULs (Pulse), TO2 will be set to heating. If you selected OnOf or PULs signal, go to Step 13. Default: Range: Increment: 0.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired minimum voltage (zero value) for heating ramp. The minimum value (Step 11) is restricted by the maximum value (Step 12). In other words, the minimum value must be less than the maximum value. Default: Range: Increment: 10.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired maximum voltage (span value) for heating ramp. The maximum value (Step 12) is restricted by the minimum value (Step 11). In other words, the maximum value must be greater than the minimum value. Default: Range: AnLG (Analog) AnLG (Analog), OnOf (On/Off) This option appears if you have selected 4P at Step 3. Select the desired cooling signal output for your 4 pipe system. If you select the AnLG (analog) signal, AO1 will be set to cooling. If you select the OnOf (on/off) signal, TO1 will be set to cooling. If you selected the OnOf signal, go to Step 16. Default: Range: Increment: 0.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired minimum voltage (zero value) for cooling ramp. The minimum value (Step 14) is restricted by the maximum value (Step 15). In other words, the minimum value must be less than the maximum value. Default: Range: Increment: 10.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired maximum voltage (span value) for cooling ramp. The maximum value (Step 15) is restricted by the minimum value (Step 14). In other words, the maximum value should be greater than the minimum value. Fan Coil Thermostat Controller Specification and Installation Instructions www.neptronic.com Page | 7 Default: Range: OFF (no signal selected) OFF, AnLG, AnLG, On/Of, On/Of, PuLS, PuLS Select the desired signal output for reheat. If you select AnLG (Analog, heating and fan), AO3 will be set to reheat. If you select On/Of (On/Off heating and fan) or PuLS (Pulse heating and fan), TO3 will be set to reheat. If you selected On/Of (On/Off heating and fan), or or PuLS (Pulse heating and fan), go to Step 19. If you selected OFF, go to Step 21. OFF (no signal selected) On/Of (On/Off heating only) PuLS (Pulse heating only) AnLG (Analog, heating only) On/Of (On/Off heating and fan) PuLS ( Pulse heating and fan ) AnLG (Analog, heating and fan) Default: Range: Increment: 0.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired minimum voltage (zero value) of reheat ramp. The minimum value (Step 17) is restricted by the maximum value (Step 18). In other words, the minimum value must be less than the maximum value. Default: Range: Increment: 0.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired maximum voltage (span value) of reheat ramp. The maximum value (Step 18) is restricted by the minimum value (Step 17). In other words, the maximum value must be greater than the minimum value. Control Ramps Default: Range: Increment: 2.0ºC [4ºF] 0.5ºC to 5.0ºC[1ºF to 10ºF] 0.5ºC [1ºF] Select the desired value for the reheat proportional band. The heating symbol is also displayed. Default: Range: Increment: 0ºC [0ºF] 0ºC to 5.0ºC [0ºF to 10.0ºF] 0.1ºC [0.2ºF] Select the desired value for the reheat dead band. The heating symbol is also displayed. Default: Range: Increment: 2.0ºC [4ºF] 0.5ºC to 5.0ºC[1ºF to 10ºF] 0.5ºC [1ºF] Select the desired value for the heating proportional band. The heating symbol is also displayed. Default: Range: Increment: 2.0ºC [4ºF] 0.5ºC to 5.0ºC[1ºF to 10ºF] 0.5ºC [1ºF] Select the desired value for the cooling proportional band. The cooling symbol is also displayed. Fan Coil Thermostat Controller Specification and Installation Instructions www.neptronic.com Page | 8 Default: Range: Increment: 0ºC [0ºF] 0ºC to 5.0ºC [0ºF to 10.0ºF] 0.1ºC [0.2ºF] Select the desired value for the heating dead band. The heating symbol is also displayed. Default: Range: Increment: 0ºC [0ºF] 0ºC to 5.0ºC [0ºF to 10.0ºF] 0.1ºC [0.2ºF] Select the desired value for the cooling dead band. The cooling symbol is also displayed. Other Settings Default: Range: Increment: 2 minutes 0 to 15 minutes 1 minute To protect the compressor, set the delay in minutes before activating or reactivating the cooling contact. The cooling symbol is also displayed. Default: Range: Increment: 0 second 0 to 250 seconds 5 seconds Select the desired value for the integration factor compensation. Default: Range: Increment: 0 second 0 to 10 seconds 1 second Select the desired value for the damping factor. The fan symbol and the cooling symbol are also displayed. Fan Settings Default: Range: 3 (speed fan contact) 1 (speed fan contact), 2 (speed fan contact), 3 (speed fan contact), AnLG (Analog) Select the desired fan speed. If you have selected the speed fan contact option, select the speed, and go to Step 31. The fan symbol is also displayed. Default: Range: Increment: 0.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired minimum voltage (zero value) for fan ramp. The minimum value (Step 29) is restricted by the maximum value (Step 30). In other words, the minimum value should be less than the maximum value. The fan symbol is also displayed. Default: Range: Increment: 10.0 Volt 0.0 to 10.0 Volt 0.1 Volt Select the desired maximum voltage (span value) for fan ramp. The maximum value (Step 30) is restricted by the minimum value (Step 29). In other words, the maximum value must be more than the minimum value. The fan symbol is also displayed. Default: Range: Yes (Enable) Yes (Enable)/No (Disable) Select the Enable or Disable option to allow the user to adjust the Automatic mode. The fan symbol is also displayed. Fan Coil Thermostat Controller Specification and Installation Instructions www.neptronic.com Page | 9 Default: Range: Increment: 2 minutes 0 to 15 minutes 1 minute Select the desired value for the automatic shutoff delay. The fan symbol is also displayed. External Temperature Sensor Default: Range: OFF (input none rewired) OFF (input none rewired), t10.0 (external temperature sensor 10.0 KΩ ) Select the sensor that should be rewired to the analog output. If you select OFF, the thermostat will be controlled by its internal temperature sensor. If you select t10.0, the thermostat will be controlled by an external temperature sensor. If you selected the OFF option, go to Step 35. Offset: Range: Increment: Max. ± 5ºC 0.0ºC to 50.0ºC [41.0ºF to 122.0ºF] 0.1ºC [0.2ºF] This option appears if you have set one of the analog inputs to t10.0 (External temperature sensor 10.0 KΩ ) at step 33. When the thermostat is connected to the appropriate analog input (AI1 or AI2), the display shows the temperature read by the external temperature sensor. Adjust the offset by comparing it with a known value (e.g. thermometer). If the sensor is not connected or short circuited, the display is blank “Error“, and the error symbol is displayed. Anti-Freeze Default: Range: No (Disable) No(Disable)/Yes (Enable) If this option is enabled, heating starts automatically when the temperature drops to 4ºC [39ºF], even if the thermostat is in OFF mode. Once the temperature reaches 5ºC [41ºF], the heating stops. Scheduling Mode Selection This menu is accessible through normal operation mode. 1. The Mode Selector Jumper (JP3) must be set to "RUN" position (Operation Mode). Refer to Wiring on page 2. 2. Press the button for 5 seconds, the symbol is displayed indicating that the Scheduling Mode has been activated. 3. Use the and arrow buttons to increase or decrease the values. 4. Press the and buttons to navigate through the program functions. The thermostat will return to normal mode if you navigate through the entire menu and do not make any selection, or if you do not press any button for 5 minutes. The changed values will be saved automatically. Time and Date Default: Range: Selection: 24 12 hours, 24 hours Desired time format Select the desired time format. Range: Increment: Selection: 00 to 23 hours 1 hour Time in hours Set the time in hours. Next >