UNILUX TA640FCW-ULX HVAC Thermostat User Manual
Temperature Measurement
•
•
•
Measurable range: 0 – 40 °C / 32 – 99 °F
Controllable range: 5 – 35 °C / 40 – 95 °F
Resolution: 0.5°C / 1°F
Remote water temperature
sensor
(for 2-pipe systems only)
•
When 2-pipe system is selected
(2H or 2P mode), remote water
temperature sensor must be
present
Embedded thermistor for measuring
Room Temperature
•
When sensor not connected or
shorted thermostat will show
"E1" and heat/cool outputs will
turn OFF
•
•
•
When temperature is below 0°C / 32°F , temperature
keeps display LO
When temperature is above 40°C / 99°F, temperature
keeps display HI
When sensor not connected or shorted thermostat
will show “- -“ and heat/cool output will turn OFF
Technical Data
Technical data
1.
2.
3.
4.
5.
5.
7.
8.
Power supply
24VAC ± 20%
Relay contact voltage
Relay contact current
Sensing Element
24VAC 50/60 Hz
1A max
10K NTC Type 2
Terminals:
0.75mm2 or 18Ga
32 ~ 122 °F / 0 ~ 50 °C
23 ~ 122 °F / -5 ~ 50 °C
5 ~ 95% R.H. non-condensing
Operating Temperature
Storage Temperature
Operating Humidity
Resolving Warning Symbols
Anti-Freeze Mode
Drain Pan Mode
Drain Pan indicator is shown when +24VAC signal is
triggered at DP terminal. The fan is forced to OFF and
all water valves close (both W and Y outputs are turned
OFF).
Defrost indicator is shown on the screen when; the room
temperature is below 5 °C / 41 °F OR remote water
temperature sensor is below 1 °C / 34 °F OR 24VAC
trigger signal is ON at FZ terminal. When triggered, fan-
speed is set to Low and all water valves open (both W
and Y outputs are turned on).
2-pipe system:
Valve output (W) should be On to keep water flowing.
4-pipe system:
Cool output should On and Heat output should On. (Both
W and Y outputs should be ON)
6 | Installation and User Manual
| General | Details |
|---|---|
| Name | UNILUX TA640FCW-ULX HVAC Thermostat User Manual |
| Make | unilux |
| Language | English |
| Filetype | PDF (Download) |
| File size | 0.51 MB |
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