TFC54F3X1 Fan Coil Thermostat

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Product Information

Specifications

• Model: TFC54F3X1

• Outputs:

  • 2 Analog outputs (cooling and/or heating and/or change over
    0-10Vdc)

  • 3 Digital outputs (fan)

• Contact Rating:

  • Resistive load: 1.0 Amp / 24 VAC / VDC
  • Inductive load: 0.3 Amp / 24 VAC / VDC
  • Maximum switching capacity: 30 VA / 24 W

• Power Supply: 22 to 26 Vac 50/60Hz

• Power Consumption: 1 VA

• Setpoint Range: Displayed on the thermostat

• Control Accuracy: Mentioned on the thermostat display

• External Sensor Thermistor: Included

• Proportional Band: Available

• Operating Temperature: As specified on the product

• Storage Temperature: As specified on the product

• Relative Humidity: As specified on the product

• Degree of Protection of Housing: As specified on the
  product

• Weight: As specified on the product

• Presentation: TFC54F3X1

Product Usage Instructions

Mounting Instructions

1. CAUTION: Risk of malfunction. Remove power
   prior to separating thermostat cover from its base.

2. Remove the screw holding the base and the front cover of the
   thermostat.

3. Lift the front cover of the thermostat to separate it from the
   base.

4. Pull wires through the base hole.

5. Secure the base to the wall using wall anchors and screws
   provided. Make appropriate connections.

6. Mount the control module on the base and secure using the
   screw.

Terminal Description

• Terminal 1: 2 Pipe / 4 Pipe
• Terminal 2: Fan option 1 spd / 2spd / 3spd

Mode Selection

Jumper (JP1) on RUN: Thermostat is in operation
mode. Setpoint, control mode, and fan speed can be modified by the
end user if not locked.

Jumper (JP1) on PGM: Thermostat is set in
Programming mode for advanced settings.

Digital Output Signal Selection

Jumper (JP2) on 24Vac: All digital output
signals are linked to 24 Vac.

Jumper (JP2) on COM: All digital output signals
are linked to common.

Frequently Asked Questions (FAQ)

How do I change the setpoint on the thermostat?

To change the setpoint, navigate to the menu on the thermostat
display and use the buttons to adjust the desired temperature
setting.

What should I do if I encounter a malfunction?

If you encounter a malfunction, first, ensure that power is
disconnected before attempting any troubleshooting steps. Refer to
the user manual for troubleshooting guidance or contact customer
support for assistance.

How can I switch between heating and cooling modes?

The thermostat allows you to switch between heating and cooling
modes by selecting the desired mode from the menu options on the
display.

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Fan Coil Thermostat
Specification and Installation Instructions

Feature: · Selectable analog and digital output · Selectable fan speed contact · Selectable Fahrenheit or Celsius scale · Manual Night Set Back override (programmable) · Multi level lockable access menu · Lockable Set point / Control mode · Selectable internal or external temperature sensor · Selectable proportional control band & dead band · Change over by contact or external temperature sensor available

TFC54F3X1

Technical Data
Outputs
Contact rating
Power supply Power consumption
Setpoint range Display resolution Control accuracy External sensor thermistor Proportional band Electrical connection Operating temperature Storage temperature Relative Humidity Degree of protection of housing
Weight
Presentation

TFC54F3X1
2 Analog outputs (cooling and/or heating and/or change over 0-10Vdc) 3 Digital outputs (fan)
Resistive load: rated load: 1.0 Amp / 24 VAC / VDC Inductive load: rated load: 0.3 Amp / 24 VAC / VDC
maximum switching capacity: 30 VA / 24 W 22 to 26 Vac 50/60Hz 1 VA
10ºC to +35ºC [50ºF to 95ºF] +/-0.1ºC [0.2ºF] Temperature: +/-0.5ºC [0.9ºF] @ 22ºC [71.6ºF] typical calibrated Type G, 0ºC [32ºF] = 29.49 k, 25ºC [77ºF] = 10 k, 50ºC [122ºF] = 3.893 k,
0.5ºC to 5ºC [1ºF to 10ºF] adjustable 0.8 mm2 [18 AWG] minimum 0ºC to 50ºC [32ºF to122ºF] -30ºC to +50ºC [-22ºF to +122ºF] 5 to 95 % non condensing IP 30 to EN 60529 80 g. [0.18 lb]

Symbols on display Cooling ON 100% output A: Automatic Heating ON 100% output A: Automatic Fan ON 3rd speed activated A: Automatic

ºC: Celsius scale

or

ºF: Fahrenheit scale

Menu set-up Lock ON
Programming mode (Technician setting)
Minimum/Maximum setpoints
Energy saving mode ON

Dimensions

B A

D C

Dimension A B C D

Inches 3.00 3.00 1.00 2.36

Metric (mm) 78 78 24 60

TFC54F3X1-231222

1

Mounting Instructions
A B

Fan Coil Thermostat
Specification and Installation Instructions
C D E

CAUTION: Risk of malfunction. Remove power prior to separate thermostat cover from its base. A. Remove the screw (captive) holding the base and the front cover of the thermostat. B. Lift the front cover of the thermostat to separate it from the base. C. Pull wire through the base hole. 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.

Terminal description

Terminals

2 Pipe

4 Pipe

Fan option 1 spd

2spd

3spd

1 spd

2spd

3spd

1 Common (COM)

Common

2 24 Vac (24Vac)

24 Vac

3 Sensor (EXT. TS)

Change over temp. sensor or contact

External temperature sensor

4 NSB input (NSB. INP)

Night set back input

5 Analog output 1 (AO1)

Cool/Heat

Heat

6 Analog output 2 (AO2)

Reheat

Cool

7 Digital output 1 (DO1) –

–

High

–

–

High

8 Digital output 2 (DO2) –

High

Medium –

High

Medium

9 Digital output 3 (DO3) 1 speed Low

Low

1 speed Low

Low

Settings on PC Board

JP1 RUN JP2.1-2:24V JP2.2-3:COM

Digital output signal selector
PGM

Mode selector

JP2 COM
24VAC EXT.TS

NSB. INP
Connecting AO1 strip AO2

Temperature sensor

DO1 DO2 DO3
TB1

1 2 3 4 5 6 7 8 9

Mode Selection (JP1)

Jumper (JP1) on RUN:

JP1 RUN PGM

Thermostat is in operation mode. Thermostat must be set in this mode to operate properly. If not locked, setpoint, control mode and speed fan (Heating & Cooling ON, Cooling only ON or Heating only ON) may be

modified by end user.

JP1 RUN

Jumper (JP1) on PGM: Thermostat is set in Programming mode.

PGM

Refer to following section about all settings description

Digital output signal selection (JP2)

JP2 24VAC

Jumper (JP2) on 24Vac: All digital output signal is linked to 24 Vac.

JP2 COM

Jumper (JP2) on COM: All digital output signal is linked to common.

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Page | 2

Fan Coil Thermostat
Specification and Installation Instructions

Programming mode

When in this mode this symbol is displayed. Please press on button

to advance to the next program function, press on

button

to return to preceding stage and press on button or to change value. You can leave the programming mode at any

time, changed values will be recorded.

Step Display

Description

Values

Internal temperature sensor Calibration:

Display switches between “tS1” and temperature read by internal

temperature sensor.

Range: 10 to 40ºC [50 to 104ºF]

1

You can adjust the calibration of the sensor by comparison with a known

(max offset ± 5ºC)

thermometer. For example if thermostat has been installed in an area where

Increment: 0.1ºC [0.2ºF]

temperature is slightly different than the room typical temperature

(thermostat place right under the air diffuser).

2

Minimum setpoint: Display switches between “Stp” and the minimum setpoint temperature. MIN symbol is also displayed. Please select the desired minimum setpoint temperature. The minimum value is restricted by the maximum value (step #3)

Minimum range 10 to 35ºC [50 to 95ºF] Increment: 0.5ºC [1ºF] Default value: 15ºC [59ºF]

Maximum setpoint

Display switches between “Stp” and the maximum setpoint temperature.

3

MAX symbol is also displayed.

Please select the desired maximum setpoint temperature.

The maximum value is restricted by the minimum value (step #2)

Maximum range 10 to 35ºC [50 to 95ºF] Increment: 0.5ºC [1ºF] Default value: 30ºC [86ºF]

Locking the setpoint :

Display switches between “LOC” and “Stp”.

4A

You can lock or unlock the setpoint adjustment by end user. If locked the lock symbol will appear.

If you do not want to lock setpoint adjustment by end user, go directly to step #5.

Default value: Unlocked

Locking the setpoint (cont’d):

Select the desired locked setpoint temperature; this one should be within Setpoint range : 10 to 35ºC [50 to 95ºF]

4B

the temperature range.

Increment: 0.5ºC [1ºF]

Default value: 22ºC [72ºF]

Adjust the control mode:

Display switches between “CtL” and “Aut”.

5

Select which control mode you want to authorize: Automatic, cooling or heating, heating only or cooling only.

If you want to authorize this entire mode, choose Automatic mode.

Default value: Cooling only

Set On/Off function enable or disable:

Display switches between “OFF” and “ena”.

6

You can enable or disable the Automatic mode adjustment by end user.

Default value: Enable

Set 2 pipes or 4 pipes:

Display switches between “Pno” and “2P”.

7

Select which number of pipes you want to use: 2 pipes or 4 pipes.

If you have selected the 4 pipes, go directly to step #12.

Default value: 2 pipe

Change over mode selection:

Display switches between “COc” and “nc”.

Please select mode of change over between contact normally cool or

contact normally heat or external sensor.

Note: This selection will affect “AO1”

If normally cool “nc” is selected, heating mode will be activated upon closing

8A

of contact. If normally heat “nh” is selected, cooling mode will be activated

upon closing of contact.

If external sensor “tS” is selected, heating mode will be activated when temperature read by external sensor is above the Change Over SetPoint

Default value: Normally cool

temperature “tCo”, and cooling mode will be activated when temperature

read by external sensor is under “tCo”, see step #8B.

If “tS” is not selected, go directly to step #9.

Change over setpoint temperature: (If “tS” has been selected at step #8A)

Display switches between “tCo” and the change over setpoint temperature

selected.

8B

Please select the change over setpoint temperature. Note: heating mode will be activated when temperature read by external

sensor is above the change over setpoint temperature “tCo”, and cooling

Range: 10 to 40ºC [50 to 104ºF] Increment: 0.5ºC [1ºF] Default value: 24ºC [75ºF]

mode will be activated when temperature read by external sensor is under

“tCo”.

Change over temperature sensor Calibration:

Range: 10 to 40ºC [50 to 104ºF]

Display switches between “COs” and the temperature read by the change

(max offset ± 5ºC)

over temperature sensor (if connected).

Increment: 0.1ºC [0.2ºF]

8C

You can adjust the calibration of the change over sensor by comparison

Display:

with a known thermometer.

0ºC [32ºF], resistance will be infinite.

50ºC [122ºF], resistance will be short

circuited.

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Page | 3

Fan Coil Thermostat
Specification and Installation Instructions

Step 9 10 11 12

Display

Description
Set local reheat On/Off or TPM: (If you have selected 2pipe control mode at step #7) Display switches between “LHt” and “OFF”. Select which signal output you want for AO2. You can choose OFF (no signal selected), ON analog heating only, ON analog heating & fan output.

Values

If you select OFF (no local reheat), go directly to step #14. Proportional band for local reheat (AO2): Display switches between “Pb.L” and the value of the local reheat proportional band, heating symbol is also displayed. Please select the desired value of local reheat proportional band.
Dead band for local reheat (AO2): Display switches between “db. L” and the value of the local reheat dead band, heating symbols are also displayed. Please select the desired value of local reheat dead band. Go to step #14. Internal/external temperature sensor selection: Display switches between “tS” and “in” or “out”. Please select internal or external sensor.

Default value: Off
Proportional band range: 0.5 to 5.0ºC [1.0 to 10.0ºF] Increment: 0.5ºC [1.0ºF] Default value: 2.0ºC [4.0ºF] Proportional band range: 0.3 to 5.0ºC [0.6 to 10.0ºF] Increment: 0.1ºC [0.2ºF] Default value: 0.3ºC [0.6ºF] Default value: Internal temperature sensor

External temperature sensor Calibration:

Display switches between “tS2” and the temperature read by the external

temperature sensor (if connected).

13

You can adjust the calibration of the external sensor by comparison with a

known thermometer.

Proportional band 1 in heating:

Display switches between “Pb.1” and the value of the 1st heating

14

proportional band, heating symbol is also displayed.

Please select the desired value of 1st heating proportional band.

Range: 10 to 40ºC [50 to 104ºF] (max offset ± 5ºC) Increment: 0.1ºC [0.2ºF] Display: 0ºC [32ºF], resistance will be infinite. 50ºC [122ºF], resistance will be short circuited.
Proportional band range: 0.5 to 5.0ºC [1.0 to 10.0ºF] Increment: 0.5ºC [1.0ºF] Default value: 2.0ºC [4.0ºF]

Proportional band 1 in cooling:

Display switches between “Pb.1” and the value of the 1st cooling

15

proportional band, cooling symbol is also displayed.

Please select the desired value of 1st cooling proportional band.

Proportional band range: 0.5 to 5.0ºC [1.0 to 10.0ºF] Increment: 0.5ºC [1.0ºF] Default value: 2.0ºC [4.0ºF]

16

Dead band in heating:
Display switches between “db.1” and the value of the dead band in heating, heating symbols are also displayed.

Proportional band range : 0.3 to 5.0ºC [0.6 to 10.0ºF] Increment: 0.1ºC [0.2ºF]

Please select the desired value of dead band in heating.

Default value: 0.3ºC [0.6ºF]

Dead band in cooling:

Proportional band range :

17

Display switches between “db.1” and the value of the dead band in cooling, cooling symbols are also displayed.

0.3 to 5.0ºC [0.6 to 10.0ºF] Increment: 0.1ºC [0.2ºF]

Please select the desired value of dead band in cooling.

Default value: 0.3ºC [0.6ºF]

Minimum position of Ao1 ramp:

Display switches between “Ao.1” and the value of the minimum position of

18

the Ao1 ramp. MIN symbol is also displayed. Please select the desired value of the minimum position of the Ao1 ramp.

(This is the “zero” value)

Range: 0.0 to 10.0 Volt. Increment: 0.2 Volt. Default value: 0.0 Volt

The minimum value is restricted by the maximum value. (step #19)

Maximum position of Ao1 ramp:

19

Display switches between “Ao.1” and the value of the maximum position of the Ao1 ramp. MAX symbol is also displayed. Please select the desired value of the minimum position of the Ao1 ramp.
(This is the “span” value)

Range: 0.0 to 10.0 Volt. Increment: 0.1 Volt. Default value: 10.0 Volt

The maximum value is restricted by the minimum value. (step #18)

Minimum position of Ao2 ramp:

Display switches between “Ao.2” and the value of the minimum position of

20

the Ao2 ramp. MIN symbol is also displayed. Please select the desired value of the minimum position of the Ao2 ramp.

(This is the “zero” value)

Range: 0.0 to 10.0 Volt. Increment: 0.2 Volt. Default value: 0.0 Volt

The minimum value is restricted by the maximum value. (step #21)

Maximum position of Ao2 ramp:

21

Display switches between “Ao.2” and the value of the maximum position of the Ao2 ramp. MAX symbol is also displayed. Please select the desired value of the minimum position of the Ao2 ramp.
(This is the “span” value)

Range: 0.0 to 10.0 Volt. Increment: 0.1 Volt. Default value: 10.0 Volt

The maximum value is restricted by the minimum value. (step #20)

Set fan speed automatic mode enable or disable:

Display switches between “FAn” and “ena”. Fan symbol is also displayed.

22

You can enable or disable the Automatic mode adjustment by end user.

Default value: Enable

If you selected to disable the automatic mode, go directly to step #24

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Page | 4

Fan Coil Thermostat
Specification and Installation Instructions

Time out fan contact:

Display switches between “Fto” and the automatic shutoff delay value (in

23

minutes) when there is no demand. MIN and fan symbols are also

displayed.

Please select the desired value of the automatic shutoff delay.

Fan speed contact:

Display switches between “FAn” and “SPd” and the speed of the fan. Fan

24

symbol is also displayed. Select which speed contact you want: speed 1, speed 2 or speed 3.

Range: 0 to 15 min. Increment: 1 min. Default value: 0 min.

Default value: Hi speed (3)

Night set back derogation time:

25

Display switches between “nSb” and the derogation time in minute. MIN and NSB symbol is also displayed.
Please select the desired derogation time. If you select “OFF”, the thermostat is off when NSB is activated.

Range: OFF or 00 to 180 min. Increment: 15min. Default value: 120 min.

If you select OFF, go directly to step #1.

Heating Setpoint during Night set back:

Display switches between “Stp” and the value of the heating setpoint

26

temperature during night set back. NSB and heating symbols are also

Range: 10 to 35ºC [50 to 95ºF] Increment: 0.5ºC [1ºF]

displayed.

Default value: 16ºC [61ºF]

Please select the heating setpoint temperature during night set back.

Cooling Setpoint during Night set back:

Display switches between “Stp” and the value of the cooling setpoint

Range: 10 to 35ºC [50 to 95ºF]

27

temperature during night set back. NSB and cooling symbols are also

Increment: 0.5ºC [1ºF]

displayed.

Default value: 28ºC [82ºF]

Please select the cooling setpoint temperature during night set back.

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Page | 5

Fan Coil Thermostat
Specification and Installation Instructions

Operation mode

Step

Description

At powering up, thermostat will light display and activate all LCD segments during 2 seconds.

Illuminating the LCD.

1

To illuminate the LCD, you just have to push onto Temperature display

or

buttons. LCD will light for 8 seconds.

In operation mode, thermostat will automatically display temperature read.

To change the scale between ºC and ºF, press on both and for 3 seconds.

Setpoint display and adjustment: To display the setpoint, press two times on or Setpoint will be displayed during 5 seconds. To 2 adjust setpoint, press on or while the temperature setpoint is displayed.

Note: If setpoint adjustment has been locked, symbol will be displayed.

Night set back (NSB):

When thermostat is in night set back mode, NSB symbol is displayed, so setpoint for cooling

3

and/or heating are increased as per the setting made in programming mode. If not locked, night set back can be derogated for a predetermined period by pressing onto any of the

4 buttons. During period of NSB derogation the symbol will flash. If NSB does not flash, the

derogation period is finished or the Night set back derogation has been locked in programming mode.

Control mode selection:

To change the control mode, press on can choose one of the following:

. Control mode will be displayed during 5 seconds. You

4

Automatic Cooling or Heating

OFF (if not disable in programming mode)

Cooling only

Heating only

Note: These selections can vary according to the choice made on step #5 & 6. Fan speed mode selection:

To change the fan speed mode, press on You can choose one of the following:

. Fan speed mode will be displayed during 5 seconds.

5

Automatic speed (if not disable in programming mode)

Low speed

Medium speed

High speed

Note: These selections can vary according to the choice made on step #22 & 24

Night set back Wiring
Terminals
TFC54F3X1
Common 1 24 Vac 2
OCCUP.STA 4

Xfo Line voltage
Time clock

Terminals TFC54F3X1

or

Common 1

24 Vac 2

OCCUP.STA 4

Schematic

Xfo Line voltage
Time clock

TFC54F3X1

Display
Line voltage Xfo
Time clock

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Page | 6

Notes

Recycling at end of life: please return this product to your Neptronic local distributor for recycling. If you need to find the nearest Neptronic authorized distributor, please consult www.neptronic.com.
400 Lebeau blvd, Montreal, Qc, H4N 1R6, Canada www.neptronic.com
Toll free in North America: 1-800-361-2308 Tel.: 514-333-1433 Fax: 514-333-3163
Customer service fax: 514-333-1091 Monday to Friday: 8:00am to 5:00pm (Eastern time)

References

• Neptronic | Home - Humidifier Distributor & HVAC Products
• Neptronic | Home - Humidifier Distributor & HVAC Products

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