Danfoss ECL Comfort 210 Installation Manual page 18

Installation Guide
2.5.4 Electrical connections, Pt 1000 temperature sensors and signals
See the Mounting Guide (delivered with the application key) for
sensor and input connections.
Sensor
Description
S1 Outdoor temperature sensor* ESMT
S2 Room temperature sensor**,
circuit 1
S3 Flow temperature sensor***,
circuit 1
S4 Flow temperature sensor***,
circuit 2
Return temperature sensor,
S5
circuit 1
S6 Return temperature sensor,
circuit 2
S7 Flow / heat meter
S8 Room temperature sensor**,
circuit 2
*
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 room temperature sensor connection. The room
temperature signal can also be available from a Remote
Control Unit (ECA 30 / 31). See 'Electrical connections, ECA
30 / 31'.
*** 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.
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.
18 DEN-SMT/DK
ECL Comfort 210 / 310, application A260
Recommended type
ESM-10
ESM-11 / ESMB /
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
ESM-10
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.LG.F2.02
Danfoss District Energy