Commissioning; Handling; Fan Stage Selection - SystemAir TControl EASY 3S Notice D'installation

8 TControl EASY 3S

12. COMMISSIONING

By pressing the " " and " " key at the same time for more than 3 s, the units °C or °F can be
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selected. Temperature display range is 0..+50 °C or +32..+99 °F. Factory default is °C.
Select 2-pipe or 4-pipe systems (Parameter 8). In both modes the control sequences, Cooling –
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Ventilating – Heating can be selected.
Using Parameter No.1. the temperature offset can be adjusted. This feature should be used if the
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temperature at the mounting place of the Room Thermostat is not accurate compared to the average
room temperature.
Key lock selection (Parameter 2), LCD backlight (Parameter 6) and set point ranges (Parameter
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4 and 5) can be parameterized. Under Fan operation "INDEPENDENT" (parameter 7) the fan runs
permanently according to the selected or automatic selected fan stage; under Fan operation
"DEPENDENT" the fan is tuned off (cyclically) when the valve is closed. If the valve is open, the fan
will run according to the selected or automatic selected fan stage. When the fan stages are changed,
the fan remains in a no-current switcheover pause (0.5 s).

13. HANDLING

By pressing " " or " " button the room temperature set point can be adjusted between +16..+30 °C
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(+60..+86 °F). See also parameter 4 and 5.
If an external temperature sensor is used in 2-pipe system to measure the temperature in the pipes,
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no change of mode is possible via MODE button. The system recognizes automatically, whether
current mode is cooling or heating. When temperature is <=19 °C cooling is active, when the
temperature is >=30 °C heating is active. The other mode is not available. A time delay between
cooling/heating mode changes is implemented to ensure safe operation and ensures eco-friendly
operation.
If no external sensor is used, the functions (heating-ventilation-cooling) can be selected using MODE
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button. In heating mode the valve will be opened, if temperature is below set point, in cooling mode
it will be opened, if the temperature is above set point.
When using a 4-pipe system no sensor is necessary. Both functions (heating and cooling) are
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available. The function can be selected via MODE button.
If the NTC room temperature sensor is out of range, thermostat will switch off the fan and close the
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valve, fault code "E01" will be shown.

14. FAN STAGE SELECTION

For cooling or heating modes
For ventilation mode
Auto mode:
Fan Stage
Fan High
Fan Med
Fan Low
Low  Med  Hi  Auto
Low  Med  Hi