Neptronic EFC Specification & Installation Instructions

TFL Series thermostat
for the EFC fan coil controller

Technical Data

Temperature Sensor
Setpoint range
Control accuracy
Display resolution
CO
Sensor (TFLG24 and TFLGH24 only)
2
Operating principle
Sensor Range
Setpoint range
Accuracy
Response time
Display resolution
Humidity Sensor (TFLH24 and TFLGH24)
Sensor range
Display resolution
Electrical connection
Network service port
Power supply
Power consumption
Operating temperature
Storage temperature
Relative humidity
Housing degree of protection
Weight
Dimensions
Certifications
Note
TFLxx24-CO2-180413.doc
Features:

Used to configure and operate the EFCB fan coil controllers

Selectable internal or external temperature sensor (10 KΩ)

Humidity sensing (TFLH24 and TFLGH24 only)

Large LCD with backlight

Icon-driven information and 1 line of text information

Three wire connection between thermostat and controller

Selectable Fahrenheit or Celsius scale

Network service port via on-board mini USB connector
CO Features (TFLG24 and TFLGH24 only)
2

Built-in, self-calibrating, non-dispersive infrared (NDIR) CO
sensor

CO measurement display (lockable)
2
10ºC to 40ºC [50ºF to 104ºF]
Temperature: ±0.4ºC [0.8ºF]
±0.1ºC [0.2ºF]
Self-calibrating, Non-Dispersive Infrared (NDIR)
0 to 2000 ppm
100 to 2000 ppm
±30 ppm ±3% of reading
2 minutes by 90%
1 PPM
5 to 95%RH
0.1%
Three wires to EFCB controller and two wires to BACnet/Modbus network | 0.8 mm
Mini USB connector
24Vac or 24Vdc
1 VA
0ºC to 50ºC [32ºF to 122ºF]
-30ºC to 50ºC [-22ºF to 122ºF]
5 to 95 % non condensing
IP 30 (EN 60529)
120 g. [0.25 lb]
A = 2.85" | 73mm
B = 4.85" | 123mm
B E
C = 1.00" | 24mm
D
D = 2.36" | 60mm
E = 3.27" | 83mm
A C
Conforms to UL STD 873
Certified to CSA STD C22.2 No. 24-93
The thermostat functions only with the EFCB series fan coil controller. All the inputs/outputs are located
on the controller except for the temperature, humidity, and CO
Specification & Installation Instructions
TFL24 / TFLH24 / TFLG24 / TFLGH24
EFC Thermostat
2
2
[18 AWG] minimum
sensors built-in the thermostat.
2
TFL24
TFLH24
TFLG24
TFLGH24
1