Wiring diagram 99DA-SEI-EC01
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2-pipe units 2
2-pipe units change over 3
4-pipe units 4
2-pipe units with elecric heater 5
Connecting multiple fan coil units 6
Various settings are possible with this type of thermostat. Read the installation manual carefully before installation. For proper
operation, check the parameters indicated per system and adjust them if necessary.
To access the configuration menu, simultaneously press the and buttons for a few seconds until “COn”
(configuration) appears on the display. Once entered in configuration menu, pressing scrolls through the
various parameters, identified with P and the parameter number, from P01 to P25.
When scrolling the parameters pressing button or or displays its current value.
To change the value, when it is displayed, press button or .
The configuration end is displayed with “End”. Press again to save the configuration and return to normal operation.
The extended parameters C01-C23 allow an advanced thermostat configuration. When the display shows “COn“ at
configuration start or “End“ at configuration end, press the button to access the extended parameters.
APPLICATION
Thermostat type: 99DA-SEI-EC01
Fan coil units with EC fan (HEE): 0-10V control
Actuators of the 2- or 3-way valves: 230V – on/off
REMARKS
1: All electrical connections must be made in accordance with the local regulations
2: ---------- External cables (not supplied by CIAT)
3: Minimum cable diameter 1,5 mm
2
(230V~)
4: Use shielded cable for 0-10V signal cable of the fan motor
5: For other connections/information, see the electrical wiring diagram of the relevant unit
18-05-2022
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