Danfoss ECL Comfort 210 Installation Manual page 29

Installation Guide
Connection of a pressure transmitter with 4-20 mA output
The 4-20 mA signal is converted to a 2-10 V signal by means of the
500 ohm resistor.
Connection of a pressure switch
A331.1 / A331.2:
Terminal Sensor / description
29 and 30 S1 Outdoor temperature
sensor*
28 and 30 S2
Supply flow temperature
sensor**
27 and 30 S3 Flow temperature sensor*** ESM-11 / ESMB /
25 and 30 S5 Return temperature sensor
23 and 30 S7
Differential pressure switch
22 and 30 S8 Pressure transmitter
(0–10 V or 4–20 mA)
or pressure switch
21 and 30 S9
Alarm switch
20 and 30 S10 Pressure transmitter
(0–10 V or 4–20 mA)
or pressure switch
*
If the outdoor temperature sensor is not connected or the
cable is short-circuited, the controller assumes that the
outdoor temperature is 0 (zero) °C.
** Only for application A331.2.
*** The flow temperature sensor must always be connected
in order to have the desired functionality. If the sensor is
not connected or the cable is short-circuited, the motorized
control valve closes (safety function).
Factory established jumper:
30 to common terminal.
Danfoss District Energy
ECL Comfort 210 / 310, application A231 / A331
Type
(recomm.)
ESMT
ESM-11 / ESMB /
ESMC / ESMU
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
VI.LG.P1.02 DEN-SMT/DK 29