Danfoss ECL Comfort 210 Installation Manual page 25

Installation Guide
Connection of flow / heat meter with pulse signal
See the Mounting Guide (delivered with the application key).
The output of the flow / heat meter can be equipped with an
external pull-up resistor if an internal pull-up resistor is not present.
Connection of flow switch or alarm contact / switch
The alarm contact acts as a Normally Closed (NC) contact. The
set-up can be changed to react on a Normally Open (NO) contact.
See Circuit 1 > MENU > Alarm > Digital > Alarm value:
0 = Alarm for NO contact
1 = Alarm for NC contact
Connection of pressure transmitter
Scale for conversion of voltage to pressure is set in the ECL Comfort.
The pressure transmitter is powered with 12 - 24 V d.c.
Output types: 0 - 10 V or 4 - 20 mA.
4 - 20 mA signal is converted to a 2 - 10 V signal by means of a 500
ohm (0,5 W) resistor.
Danfoss District Energy
ECL Comfort 210 / 310, application A266
Wire cross section for sensor connections: Min. 0.4 mm².
Total cable length: Max. 200 m (all sensors incl. internal ECL 485
communication bus).
Cable lengths of more than 200 m may cause noise sensibility (EMC).
VI.KT.X3.02 DEN-SMT/DK 25