Neptronic TFHB24F3XYZ1 User manual

Fan Coil Thermostat
Specification & Installation Instructions
TFHB24F3XYZ1/100910 1
Fan Coil Thermostat with BACnet
®
Communication Port
Technical Data TFHB24F3XYZ1
Inputs
1 Digital input (24Vac or dry contact)
1 Analog input (humidification 0-10Vdc)
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 0-10Vdc)
1 Analog output (local reheat 0-10Vdc)
2 Triacs output (cooling and/or heating) 24Vac, 0.3A max fused / triac
1 Triacs output (local reheat) 24Vac, 0.3A max fused / triac
Power supply 22 to 26Vac 50/60Hz
Power consumption 1 VA max
Set point range Temperature: 10ºC to 40ºC [50ºF to 104ºF], Humidity: 10 to 65%RH
Control accuracy Temperature: ±0.4ºC [0.8ºF], Humidity: ±3.5%
Proportional band 0.5ºC to 5ºC [1ºF to 10ºF] adjustable (heat/cool/reheat independent)
Dead band 0.3ºC to 5ºC [0.6ºF to 10ºF] adjustable (heat/cool/reheat independent)
Electrical connection 0.8 mm2[18 AWG] minimum
Operating temperature 0ºC to 50ºC [32ºF to 122ºF]
Storage temperature -30ºC to 50ºC [-22ºF to 122ºF]
Relative Humidity 5 to 95 % non condensing
Degree of protection of housing IP 30 (EN 60529)
Weight 160 g. [0.36 lb]
Interface
C
F
%RH
MO TU WE TH FR SA SU
AM PM
.
.
.
.
Symbols on display
Cooling ON
A: Automatic
Communication
Status Alarm status
Heating ON
A: Automatic Menu set-up Lock Energy saving mode
Fan ON
A: Automatic
Programming mode
(Technician setting) %RH Percentage of
humidity
Humidity Dehumidification ON
C
or
F
ºC: Celsius scale
ºF: Fahrenheit scale
Dimensions
A
B
C
D
E
-
Dimension Imperial (in) Metric (mm)
A2.85 73
B4.85 123
C1.00 24
D2.36 60
E3.27 83
Features:
xAttractive modern look with large LCD and backlight
xIcons driven information and 1 line of text information
x2 Pipes Analog, ON/OFF or Floating or
4 Pipes Analog, ON/OFF with local re-heat function
xAuto fan and ON/OFF function enable or disable
xExternal humidity sensor input and dehumidification sequence
(compensated by auto-activation of the reheat output)
xPrecise achieve temperature control with programmable PI function
xIndependent cooling & heating no occupancy set point
xLockable Set point / Control mode
xChange over by contact or external temperature sensor
xCelsius or Fahrenheit scale selectable
xAnti-freeze protection
xBACnet®MS/TP @ 9600, 19200, 38400, 76800bps
xSelectable device Instance and MAC Address via technician menu
TFHB24F3XYZ1

TFHB24F3XYZ1 Specification & Installation Instructions
2
Mounting Instructions
A
E
D
C
B
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
2 Pipe Analog On/Off Floating
T
erminals Fan option analog 1 spd 2 spd 3 spd analog 1 spd 2 spd 3 spd analog 1 spd 2spd 3spd
TB1
1Common Common Common Common
224 Vac 24 Vac 24 Vac 24 Vac
3Common Triac Common Triac Common Triac Common Triac
4Triac output 1 (TO1) Floating
output 1
- 2 Pipe on/off 2 Pipe floating (close)
5Triac output 2 (TO2) - - 2 Pipe floating (open)
6Triac output 3 (TO3) Reheat Local reheat (optional) (on/off or pulse) Local reheat (optional) (on/off or pulse) Local reheat (optional) (on/off or pulse)
7Common Relay - Common Relay - Common Relay - Common Relay
8Digital output 1 (DO1) - - - High - - - High - - - High
9Digital output 2 (DO2) - - High Med - - High Med - - High Med
10 Digital output 3 (DO3) /
Analog Fan Speed (AO4) Fan analog 1 spd Low Low Fan analog 1 spd Low Low Fan analog 1 spd Low Low
11 Occupancy Sensor (DI1) Occupancy Sensor (optional) Occupancy Sensor (optional) Occupancy Sensor (optional)
12 External Humidity Sensor (AI1) External Humidity Sensor (optional) External Humidity Sensor (optional) External Humidity Sensor (optional)
13 External Changeover (AI2) External Changeover External Changeover External Changeover
14 Analog output 1 (AO1) 2 Pipe analog - -
15 Analog output 2 (AO2) - - -
16 Analog output 3 (AO3) Reheat Local reheat analog (optional) Local reheat analog (optional) Local reheat analog (optional)
17 A+ Communication
port RS-485 BACnet BACnet BACnet
18 B-
4 Pipe Cool & Heat Analog Cool & Heat On/Off Cool Analog-Heat On/Off or pulse Cool On/Off - Heat Analog
T
erminals Fan option analog 1 spd 2 spd 3 spd analog 1 spd 2 spd 3 spd analog 1 spd 2 spd 3 spd analog 1 spd 2 spd 3 spd
TB1
1Common Common Common Common Common
224 Vac 24 Vac 24 Vac 24 Vac 24 Vc
3Common Triac Common Triac Common Triac Common Triac Common Triac
4Triac output 1 (TO1) Floating
output 1
- 4 Pipe on/off cool - 4 Pipe on/off cool
5Triac output 2 (TO2) - 4 Pipe (on/off or pulse) heat 4 Pipe (on/off or pulse) heat -
6Triac output 3 (TO3) Reheat Local reheat (optional)(on/off or pulse) Local reheat (optional)(on/off or pulse) Local reheat (optional)(on/off or pulse) Local reheat (optional)(on/off or pulse)
7Common Relay - Common Relay - Common Relay - Common Relay - Common Relay
8Digital output 1 (DO1) - - - High
- -
- High
- -
- High
- -
- High
9Digital output 2 (DO2) - - High Med - - High Med - - High Med
- -
High Med
10 Digital output 3 (DO3) /
Analog Fan Speed (AO4) Fan analog 1 spd Low Low Fan analog 1 spd Low Low Fan analog 1 spd Low Low
Fan analog 1 spd Low Low
11 Occupancy Sensor (DI1) Occupancy Sensor (optional) Occupancy Sensor (optional) Occupancy Sensor (optional) Occupancy Sensor (optional)
12 Ext. Humidity Sensor (AI1) Ext. Humidity Sensor (optional) Ext. Humidity Sensor (optional) Ext. Humidity Sensor (optional) Ext. Humidity Sensor (optional)
13 External Changeover (AI2) - - - -
14 Analog output 1 (AO1) 4 Pipe analog cool - 4 Pipe analog cool -
15 Analog output 2 (AO2) 4 Pipe analog heat - - 4 Pipe analog heat
16 Analog output 3 (AO3) Reheat Local reheat analog (optional) Local reheat analog (optional) Local reheat analog (optional) Local reheat analog (optional)
17 A+ Communication
port RS-485 BACnet BACnet BACnet BACnet
18 B-
Settings on PC Board
Connecting
strip TB1
Temperature
sensor
TB1
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Mode selector
JP3
PGM RUN
Dip
switch
ON
1 2 3
Triac output
signal selector
JP1
JP4
Fan output signal
selector
JP2
Digital output
signal selector
Triac Output Signal Selection (JP1) Mode Selection (JP3)
Jumper (JP1) on top: All triac output
signal is linked to internal 24Vac.
(Same 24Vac than thermostat) PGM
RUN
JP3 Jumper (JP3) on RUN:
Thermostat is in operation mode.
Thermostat must be set in this mode to operate properly.
If not locked, set point, control mode and speed fan
(Heating & Cooling ON, Cooling only ON or Heating only
ON) may be modified by end user.
Jumper (JP1) on bottom: All triac output
signal is linked to external 24Vac.
(Different 24Vac than thermostat)
Digital Output Signal Selection (JP2)
24VAC
Jumper (JP2) on left: All digital output
signal is linked to internal 24Vac.
(Same 24Vac than thermostat)
PGM
RUN
JP3 Jumper (JP3) on PGM:
Thermostat is set in Programming mode.
Refer to following section about all settings description
Jumper (JP2) on right: All digital output
signal is linked to external 24Vac.
(Different 24Vac than thermostat)
Fan Output Signal Selection (JP4) Bacnet dip switch (DS1) - Optional
AO4
DO3
JP4 Jumper (JP4) on top:
Pin 10 of TB1 is set to be digital output
signal (DO3).
ON
1 2 3
Pull up
120 ohm termination (Last node)
Pull down
AO4
DO3
JP4 Jumper (JP4) on bottom:
Pin 10 of TB1 is set to be analog output
signal (AO4).
24VAC EXT.
EXT.
24VAC
24VAC

TFHB24F3XYZ1 Specification & Installation Instructions
3
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
1C
Internal temperature sensor Calibration:
Display shows “inside temper sensor offset” and temperature read by
internal temperature sensor.
You can adjust the calibration of the sensor by comparison with a known
thermometer. For example if thermostat has been installed in an area
where temperature is slightly different than the room typical temperature
(thermostat place right under the air diffuser).
Range : 10 to 40ºC [50 to 104ºF]
(max. offset ± 5ºC)
Increment: 0.1ºC [0.2ºF]
2C
Minimum set point:
Display shows “adjust minimum user setpnt” and the minimum set point
temperature.
Please select the desired minimum set point temperature.
The minimum value is restricted by the maximum value. (step #3)
Minimum range:
10 to 40ºC [50 to 104ºF]
Increment: 0.5ºC [1ºF]
Default value: 15ºC [59ºF]
3C
Maximum set point:
Display shows “adjust maximum user setpnt” and the maximum set point
temperature.
Please select the desired maximum set point temperature.
The maximum value is restricted by the minimum value. (step #2)
Maximum range:
10 to 40ºC [50 to 104ºF]
Increment: 0.5ºC [1ºF]
Default value: 30ºC [86ºF]
4
Locking the set point:
Display shows “user setpnt locked” and the status of the function.
You can lock or unlock the set point adjustment by end user. If locked,
“yes” and lock symbol will appear. Default value:
Unlocked (NO)
5C
Adjust internal set point:
Display shows “adjust intern setpnt” and the set point temperature.
Select the desired set point temperature; this one should be within the
temperature range.
Lock symbol will appear if the set point was locked at the previous step.
Set point value is restricted by the minimum and maximum value. (step
#2 & 3)
Set point range:
10 to 40ºC [50 to 104ºF]
Increment: 0.5ºC [1ºF]
Default value: 22ºC [72ºF]
6
Adjust the control mode:
Display shows “adjust temper control mode”.Cooling and heating
symbols are also displayed.
Select which control mode you want to authorize:
Automatic cooling and heating, cooling or heating, heating only or cooling
only.
If you want to authorize this entire mode, choose Automatic mode.
Default value:
Automatic cooling and heating
7
Set On/Off function enable or disable:
Display shows “enable on off control mode”.
You can enable or disable the On/Off function in control mode
adjustment by end user. Default value:
Enable (YES)
8
Set 2 pipe or 4 pipe:
Display shows “select 2 pipe 4 pipe system”.Cooling and heating
symbols are also displayed.
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 #15.
Default value: 2 pipe

TFHB24F3XYZ1 Specification & Installation Instructions
4
Step Display Description Values
9
Set signal for 2 pipe system:
Display shows “select 2 pipe signal”.Cooling and heating symbols are
also displayed.
Select which signal output you want for your 2 pipe system.
You can choose analog, on/off or floating output.
If you select analog, AO1 will be set in automatic heat/cool change over.
If you select on/off, TO1 will be set in automatic heat/cool change over.
If you select floating, TO1 will be set close and TO2 open.
If you have selected analog signal, go directly to step #11.
If you have selected on/off signal, go directly to step #13. Default value: Analog
10
Set floating time:
Display shows “set floating time in seconds” and the floating time value
(in seconds).
Please select desired value of the floating time signal.
Go to step #13.
Range: 15 to 250 sec.
Increment: 5 sec.
Default value: 100 sec.
11
Minimum voltage of the analog output:
Display shows “min vdc analog output” and the value of the minimum
voltage of the analog ramp.
Please select the desired value of the minimum voltage of the analog
ramp. (This is the “zero” value)
The minimum value is restricted by the maximum value. (step #11)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 0.0 Volt
12
Maximum voltage of the analog output:
Display shows “max vdc analog output” and the value of the minimum
voltage of the analog ramp.
Please select the desired value of the maximum voltage of the analog
ramp. (This is the “span” value)
The maximum value is restricted by the minimum value. (step #10)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 10.0 Volt
13
Change ove
r
sensor selection:
Display shows “Ch over temper sensor”.
Please select which sensor is rewired to the analog input: SENs (external
change over sensor), NoCl (change over contact normally cool) or NoHt
(change over contact normally heat).
When normally cool “NoCL” is selected, if contact is closed heating mode
will be activated, if contact is opened cooling mode will be activated.
When normally heat “NoHt” is selected, if contact is closed cooling mode
will be activated, if contact is opened heating mode will be activated.
When change over external sensor “SENs” is selected, heating mode will
be activated when temperature read by external sensor is above the
Change Over Set Point temperature, and cooling mode will be activated
when temperature read by external sensor is under, see step #14.
If “SENs” is not selected, go directly to step #21.
Default value: SENs
14 C
Change over set point temperature: (If ‘’SENs’’ has been selected at step #13)
Display shows “Ch over setpnt temper” and the change over set point
temperature.
Please select the change over set point temperature.
Note: heating mode will be activated when temperature read by external
sensor is above the change over set point temperature, and cooling mode
will be activated when temperature read by external sensor is under.
Go to step #21.
Range: 10 to 40ºC [50 to 104ºF]
Increment: 0.5ºC [1ºF]
Default value: 24ºC [75ºF]
15
Set signal for 4 pipe heating system: (If ‘’4P’’ has been selected at step #8)
Display shows “select 4 pipe heating signal”.Heating symbols is also
displayed.
Select which heating signal output you want for your 4 pipe system.
You can choose analog, on/off or pulse output.
If you select analog, AO2 will be set in heating.
If you select on/off or pulse, TO2 will be set in heating.
If you have selected on/off or pulse signal, go directly to step #18.
Default value:
A
nalo
g
16
Minimum voltage of the heating output:
Display shows “min vdc analog output heating” and the value of the
minimum voltage of the heating ramp.
Please select the desired value of the minimum voltage of the heating
ramp. (This is the “zero” value)
The minimum value is restricted by the maximum value. (step #17)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 0.0 Volt

TFHB24F3XYZ1 Specification & Installation Instructions
5
Step Display Description Values
17
Maximum voltage of the heating output:
Display shows “max vdc analog output heating” and the value of the
minimum voltage of the heating ramp.
Please select the desired value of the maximum voltage of the heating
ramp. (This is the “span” value)
The maximum value is restricted by the minimum value. (step #16)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 10.0 Volt
18
Set signal for 4 pipe cooling system: (If ‘’4P’’ has been selected at step #8)
Display shows “select 4 pipe cooling signal”.Cooling symbols is also
displayed.
Select which cooling signal output you want for your 4 pipe system.
You can choose analog or on/off output.
If you select analog, AO1 will be set in cooling.
If you select on/off, TO1 will be set in cooling.
If you have selected on/off signal, go directly to step #21.
Default value: Analog
19
Minimum voltage of the cooling output:
Display shows “min vdc analog output cooling” and the value of the
minimum voltage of the cooling ramp.
Please select the desired value of the minimum voltage of the cooling
ramp. (This is the “zero” value)
The minimum value is restricted by the maximum value. (step #20)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 0.0 Volt
20
Maximum voltage of the cooling output:
Display shows “max vdc analog output cooling” and the value of the
minimum voltage of the cooling ramp.
Please select the desired value of the maximum voltage of the cooling
ramp. (This is the “span” value)
The maximum value is restricted by the minimum value. (step #19)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 10.0 Volt
21
Set local reheat signal
Display shows “set local reheat signal”.Heating symbols is also
displayed.
Select which signal output you want for reheat.
You can choose OFF (no signal selected), ANALOG heating only,
ANALOG heating & fan, ON/OFF heating only, ON/OFF heating & fan,
PULSE heating only, PULSE heating & fan output.
If you select analog (& fan), AO3 will be set in reheat.
If you select on/off (& fan) or pulse (& fan), TO3 will be set in reheat.
If you have selected analog (& fan) signal, go directly to step #22.
If you have selected on/off (& fan) or pulse (& fan) signal, go directly
to step #24.
If you have selected OFF, go directly to step #26.
Default value: Off
22
Minimum voltage of the reheat output:
Display shows “min vdc analog output reheat” and the value of the
minimum voltage of the reheat ramp.
Please select the desired value of the minimum voltage of the reheat
ramp. (This is the “zero” value)
The minimum value is restricted by the maximum value. (step #23)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 0.0 Volt
23
Maximum voltage of the reheat output:
Display shows “max vdc analog output reheat” and the value of the
minimum voltage of the reheat ramp.
Please select the desired value of the maximum voltage of the reheat
ramp. (This is the “span” value)
The maximum value is restricted by the minimum value. (step #22)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 10.0 Volt
24 C
Reheat proportional band:
Display shows “control ramp reheat” and the value of the reheat
proportional band, heating symbol is also displayed.
Please select the desired value of reheat proportional band.
Proportional band range :
0.5 to 5.0ºC [1 to 10ºF]
Increment: 0.5ºC [1ºF]
Default value: 2.0ºC [4ºF]

TFHB24F3XYZ1 Specification & Installation Instructions
6
Step Display Description Values
25 C
Reheat dead band:
Display shows “control dead band reheat” and the value of the reheat
dead band, heating symbol is also displayed.
Please select the desired value of reheat dead band.
Dead band range :
0.3 to 5.0ºC [0.6 to 10.0ºF]
Increment: 0.1ºC [0.2ºF]
Default value: 0.3ºC [0.6ºF]
26 C
Proportional band in heating:
Display shows “control ramp HEATing” and the value of the heating
proportional band, heating symbol is also displayed.
Please select the desired value of heating proportional band.
Proportional band range :
0.5 to 5.0ºC [1 to 10ºF]
Increment: 0.5ºC [1ºF]
Default value: 2.0ºC [4ºF]
27 C
Proportional band in cooling:
Display shows “control ramp cooling” and the value of the cooling
proportional band, cooling symbol is also displayed.
Please select the desired value of cooling proportional band.
Proportional band range :
0.5 to 5.0ºC [1 to 10ºF]
Increment: 0.5ºC [1ºF]
Default value: 2.0ºC [4ºF]
28 C
Dead band in heating:
Display shows “control dead band heating” and the value of the heating
dead band, heating symbol is also displayed.
Please select the desired value of heating dead band.
Dead band range :
0.3 to 5.0ºC [0.6 to 10.0ºF]
Increment: 0.1ºC [0.2ºF]
Default value: 0.3ºC [0.6ºF]
29 C
Dead band in cooling:
Display shows “control dead band cooling” and the value of the cooling
dead band, cooling symbol is also displayed.
Please select the desired value of cooling dead band.
Dead band range :
0.3 to 5.0ºC [0.6 to 10.0ºF]
Increment: 0.1ºC [0.2ºF]
Default value: 0.3ºC [0.6ºF]
30
Anti-cycling delay cooling contact (protection for compressor):
Display shows “cooling anti cycle minutes” and the value (in minutes) of
the delay to activate / reactivate cooling contact.
Please select the desired value of the delay cooling contact. Range: 0 to 15 min.
Increment: 1 min.
Default value: 2 min.
31
Integration time factor setting:
Display shows “adjust intgral time in seconds” and the time in seconds
for the integration factor compensation.
Please select the desired value of the integration factor compensation. Range: 0 to 250 seconds
Increment: 5 seconds
Default value: 0 seconds
32
Fan damping factor setting:
Display shows “adjust damping factor seconds” and the time in
seconds for the damping factor which will slow down the effect in change
of demand for fan speed.
Please select the desired value of the damping factor.
Range: 0 to 10 seconds
Increment: 1 seconds
Default value: 0 seconds
33
Fan speed signal:
Display shows “select fan speed signal” and the speed of the fan. Fan
symbol is also displayed.
Select which fan speed signal or quantity of contact you want: Analog
signal, 1 speed, 2 speed or 3 speed.
If you want to use 1, 2 or 3 fan contact, select speed desired and go
directly to step #36.
Default value: 3 fan speed contact

TFHB24F3XYZ1 Specification & Installation Instructions
7
Step Display Description Values
34
Minimum voltage of the fan output:
Display shows “min vdc analog output fan” and the value of the
minimum voltage of the fan ramp.
Please select the desired value of the minimum voltage of the fan ramp.
(This is the “zero” value)
The minimum value is restricted by the maximum value. (step #35)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 0.0 Volt
35
Maximum voltage of the fan output:
Display shows “max vdc analog output fan” and the value of the
minimum voltage of the fan ramp.
Please select the desired value of the maximum voltage of the fan ramp.
(This is the “span” value)
The maximum value is restricted by the minimum value. (step #34)
Range: 0.0 to 10.0 Volt
Increment: 0.1 Volt
Default value: 10.0 Volt
36
Set fan speed automatic mode enable or disable:
Display shows “enable fan auto mode”. Fan symbol is also displayed.
You can enable or disable the Automatic mode adjustment by end user.
If you selected to disable the automatic mode, go directly to step
#38.
Default value:
Enable (YES)
37
Time out fan contact:
Display shows “fan auto timeout minutes” and the automatic shutoff delay
value (in minutes) when there is no demand.
Please select the desired value of the automatic shutoff delay. Range: 0 to 15 min.
Increment: 1 min.
Default value: 2 min.
38
Occupancy contact:
Display shows “Select occ contact”. Moon symbol is also displayed.
You can choose NO (normally open) or NC (normally close) contact.
Default value:
Normally open (NO)
39
No occupancy derogation time :
Display shows “no occ delay overide minutes” and the derogation time in
minute. NSB symbol is also displayed.
Please select the desired derogation time.
If no derogation time is desired select “0”.
Range: 0 to 180 min.
Increment: 15 min.
Default value: 120 min.
40 C
Heating Set point during no occupancy:
Display shows “no occ heating setpnt” and the value of the heating set
point temperature during no occupancy period. Moon and heating
symbols are also displayed.
Please select the heating set point temperature during no occupancy.
The maximum value is restricted by the no occupancy cooling set point.
(step # 41)
Range: 10.0 to 40.0ºC [50 to 104ºF]
Increment: 0.5ºC [1ºF]
Default value: 16.0ºC [61ºF]
41 C
Cooling set point during no occupancy:
Display shows “no occ cooling setpnt” and the value of the cooling set
point temperature during no occupancy period. Moon and cooling
symbols are also displayed.
Please select the cooling set point temperature during no occupancy.
The minimum value is restricted by the no occupancy heating set point.
(step # 40)
Range: 10.0 to 40.0ºC [50 to 104ºF]
Increment: 0.5ºC [1ºF]
Default value: 28.0ºC [82ºF]

TFHB24F3XYZ1 Specification & Installation Instructions
8
Step Display Description Values
42
%RH
External humidity sensor offset Calibration:
Display shows “extern humidty sensor offset” and relative humidity
percentage read by external humidity sensor. Humidify symbol is also
displayed.
If the sensor is not connected or short circuited, the display shows “Eror”.
You can adjust the calibration of the sensor by comparison with a known
humidistat. For example if humidistat has been installed in an area where
humidity is slightly different than the room typical humidity.
Range: 10 to 90%RH
(max. offset ± 5%)
Increment: 0.1%RH
0.0%RH no humidity sensor
43 %RH
Humidity control ramp:
Display shows “humidty control ramp” and the value of the humidity
ramp. Humidify symbol is also displayed.
Select the desired span for the humidify ramp. Set point range: 3 to 10%RH
Increment: 0.5%RH
Default value: 5.0%RH
44
Enable or disable anti-freeze protection:
Display shows “enable anti freeze protect”.
You can enable or disable the Anti-freeze function.
When enabled, if temperature drop to 4ºC [39ºF], heat and reheat will
start even if thermostat is in OFF mode.
Heat and reheat will stop when temperature reach 5ºC [41ºF].
Default value:
Di
s
able (NO)
45
Communication bauds rate:
Display shows “adjust comport bauds rate” and the value of the baud
rate in kBps.
Select the desired bauds for communication. Range: 9600, 19200, 38400, 76800
Default value: 9.6 kBps
46
Communication MSTP/Mac address:
Display shows “adjust MSTP Mac address”.
Select the desired MSTP/Mac for communication. Range: 0 to 254
Increment: 1
Default value: 1
47
Communication device instance:
Display shows “adjust device instanc 0153000”.
If you want to change the device, select “yes” and go to next step.
If you do not want to change the device, go directly to step #1. Default value: no
48
Communication device instance (cont’d):
Display shows the device address value.
You can modify the device address by incrementing or decrementing the
blinking digit with “'” or “”buttons. To modify following digit on right
press , to return to digit on the left press .
Range: 0 to 4194302
Increment: 1 by digit
Default value: 0153000

TFHB24F3XYZ1 Specification & Installation Instructions
9
Operation Mode
Step Description Display
A
At powering up, thermostat will light display and activate all LCD segments during 2 seconds.
Illuminating the LCD.
To illuminate the LCD, you just have to push onto any of the 4 buttons. LCD will light for 4 seconds.
Temperature display
In operation mode, thermostat will automatically display the temperature reading for 8 seconds.
Humidity reading will be displayed for 2 seconds.
If “OFF”, “- - -” and alarm symbol are displayed, the temperature sensor is not connected or short
circuited.
To change the scale between ºC and ºF, press on both 'and for 3 seconds.
C
B
Temperature set point display and adjustment
To display the set point, press two times on 'or . Set point will be displayed during 3 seconds.
To adjust set point, press on 'or while the temperature set point is displayed.
Note: If set point adjustment has been locked, symbol will be displayed.
C C
C
Humidity set point display and adjustment
Humidity set point menu will be access by pushing button for 5 seconds. When in this mode
“ADJUST HUMIDTY SETPNT” is displayed. Set point will be displayed during 5 seconds.
To adjust set point, press on 'or while the humidity set point is displayed. If you press on button
or , you will leave the humidity set point menu.
Humidity display
In operation mode, when humidity reading is displayed for 2 seconds, if “- - -” and alarm symbol are
displayed, the humidity sensor is not connected or short circuited.
%RH %RH
D
No occupancy mode :
When thermostat is in no occupancy mode, moon symbol is displayed, so set point for cooling
and/or heating are increased as per the setting made in programming mode.
If not locked, no occupancy mode can be derogated for a predetermined period by pressing onto
any of the 3 buttons. During period of derogation the symbol will flash. If does not flash, the
derogation period is finished or the no occupancy mode derogation has been locked in
programming mode.
C
E
Control mode selection :
To change the control mode, press on . Control mode will be displayed during 5 seconds. You
can choose one of the following:
9Automatic Cooling or Heating
9Cooling and Heating OFF
9Cooling only
9Heating only
Note: These selections can vary according to the choice made on steps #6 & #7.
F
Fan speed mode selection:
To change the fan speed mode, press on . Fan speed mode will be displayed during 5 seconds.
You can choose one of the following:
9Automatic speed (if not disable in programming mode)
9Low speed
9Medium speed
9High speed
Note: These selections can vary according to the choice made on step #33 & #36.

TFHB24F3XYZ1 Specification & Installation Instructions
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Notes:

TFHB24F3XYZ1 Specification & Installation Instructions
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Notes:

TFHB24F3XYZ1 Specification & Installation Instructions
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Notes:
Recycling at end of life
At end of life, please return the thermostat to your Neptronic®local distributor for recycling. If you need to find the nearest Neptronic®
authorized distributor, please consult www.neptronic.com.