Emos ST201 - Specifications

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Programmable Electronic Room
Thermostat • model ST201
ST201 programmable thermostat provides electronic control of 230VAC heating
or cooling system as well as providing a frost protection. ST201 includes feature of
setback function for energy saving purpose. Also it o ers the option of Pulse width
modulation (PWM) control.
ST201 provides 9 prede ned and user adjustable programs. ST201 has been designed
to give you an easy–to-use and push-button climate control. The large, clear and backlit
display is easy to read even in the dark.
GB
Speci cations
Dimensions 135 (W) x 105 (H) x 32 (D) mm
Materials Polycarbonate (PC)
Weight 300 g
Battery Alkaline AA 1.5 V x 2
Max. Switching voltage ~ 230 V AC/50 Hz
Max. Switching current ~ 3(1) A
Temperature control range 10 -35 °C
Temperature Control Span 0.5/1/2 °C
Operating temperature 0 °C - 50 °C
Storage temperature -20 °C - 60 °C
Keys
ST201 has 8 input keys: COMF/ECON, U, V, PROG, OK, green Button, SET, and internal
RESET Button.
Keys Functions
COMF/ECON Select Comfort, Econ or Defrost set-temp
U and V
Adjust the desired set-temperature
PROG
Cancel program override/ select program in
program setting mode
OK Return to normal mode
Green Button
Turn on setback function in heating system/
switch to o mode in cooling system
SET
Enter setting modes/ change program day in
program setting mode
RESET
Reset the thermostat to default state. This key is
located on the PCB
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Reset
ST201 will be hard reset after reset button is pressed. ST201 will be soft reset after
power up.
Default of Comfort, Econ and Setback:
• If System option is set to Heat:
Comfort: 21.0 °C (70 °F)
Econ: 19.0 °C (66 °F)
Setback: = Econ – 3 °C (6 °F) = 16.0 °C (60 °F)
• If System option is set to Cool:
Comfort: 24.0 °C (75 °F)
Econ: 27 °C (81 °F)
Function Hard reset Soft reset
Operation mode Normal mode
Temperature scale Depends on option switch
Room temperature The current room temperature
Set-temp Base on the current time and program
Preset Set-temps Default Retrieved from EEPROM
Clock 00:00 Retrieved from EEPROM
Day Monday Retrieved from EEPROM
Program day 5 –2 or 7 – days depends on Program day option
Program pro le
Reset to default (Refer to
„Setting program“)
Retrieved from EEPROM
Program
All days are reset to
Program 1
Retrieved from EEPROM
Program override All cleared
System Heat or Cool mode depends on System option
Control mode
On – O or PWM control depends on Control mode
option
Span Span depends on Span option
Low battery warning Cleared, to be renewed within 4 seconds
LCD backlight O
Short cycle protection
timer
Reset
Power down  ag Reset
Output status
O
Relay is initialized to O