Technical data

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Fan Coil Thermostat

Specification & Installation Instructions

TFHB24F3XYZ2.doc/100217 1

Fan Coil Thermostat with BACnet

Communication Port

Technical Data

TFHB24F3XYZ2

Inputs

1 Digital input (24Vac or dry contact)

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 0-10Vdc)

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 mm

[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]

Presentation

SEC

VDC

%RH

MAXV

MINV

Symbols on display

Cooling ON

33,66,100% output

A: Automatic

Communication

Status

Alarm status

eating O

33,66,100% output

A: Automatic

Menu set-up Lock

Energy saving mode

Fan O

speed activated

A: Automatic

Programming mode

(Technician setting)

%RH

Percentage of

humidity

Humidity Dehumidification ON

ºC: Celsius scale

ºF: Fahrenheit scale

Dimensions

Dimension Inches Metric (mm)

2.85 73

4.85 123

1.00 24

D 2.36 60

3.27 83

Features:

• Attractive modern look with large LCD and backlight

• Icons driven information and 1 line of text information

• 2 Pipes Analog, ON/OFF or Floating or

4 Pipes Analog, ON/OFF with local re-heat function

• Auto fan and ON/OFF function enable or disable

• Internal humidity sensor and dehumidification sequence

(compensated by auto-activation of the reheat output)

• Precise achieve temperature control with programmable PI function

• Independent cooling & heating no occupancy set point

• Lockable Set point / Control mode

• Change over by contact or external temperature sensor

• Celsius or Fahrenheit scale selectable

• Anti-freeze protection

• BACnet

MS/TP @ 9600, 19200, 38400, 76800bps

• Selectable device Instance and MAC Address via technician menu

TFHB24F3XYZ2

Summary of content (10 pages)

PAGE 1
Fan Coil Thermostat Specification & Installation Instructions Fan Coil Thermostat with BACnet Communication Port ® Features: • • • • • • • • • • • • • TFHB24F3XYZ2 Attractive modern look with large LCD and backlight Icons driven information and 1 line of text information 2 Pipes Analog, ON/OFF or Floating or 4 Pipes Analog, ON/OFF with local re-heat function Auto fan and ON/OFF function enable or disable Internal humidity sensor and dehumidification sequence (compensated by auto-activation of the reheat
PAGE 2
TFHB24F3XYZ2 Specification & Installation Instructions Mounting Instructions A B 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.
PAGE 3
TFHB24F3XYZ2 Specification & 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.
PAGE 4
TFHB24F3XYZ2 Step Display Specification & Installation Instructions Description 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.
PAGE 5
TFHB24F3XYZ2 Step Display 17 Specification & Installation Instructions Description 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) Values 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.
PAGE 6
TFHB24F3XYZ2 Step 25 26 27 28 29 Display Specification & Installation Instructions C Description 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. 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.
PAGE 7
TFHB24F3XYZ2 Step Display Specification & Installation Instructions Description 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) 34 Values Range: 0.0 to 10.0 Volt Increment: 0.1 Volt Default value: 0.0 Volt The minimum value is restricted by the maximum value.
PAGE 8
TFHB24F3XYZ2 Step 42 43 Display C C 44 %RH 45 %RH 46 Specification & Installation Instructions Description 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.
PAGE 9
TFHB24F3XYZ2 Step 50 Display Specification & Installation Instructions Description 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].
PAGE 10
TFHB24F3XYZ2 Operation Mode Step A Specification & Installation Instructions Description Display 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.