Danfoss ECL Comfort 210 Operating Manual page 24

Operating Guide ECL Comfort 210/296/310, application A237/A337
2.5.2 Electrical connections, Pt 1000 temperature sensors
See also the Installation Guide (delivered with the application key)
for application specific connections.
Sensor Description
S1
Outdoor temperature
sensor*
S2 Room temperature sensor** ESM-10
S3 Flow temperature sensor*** ESM-11 / ESMB /
S4 A237.2 / A337.2:
DHW charging temperature
sensor
S5 Return temperature sensor
S6
DHW tank temperature
sensor, upper****
S7 A237.1, A237.2:
Flow / energy meter (pulse
signal)
S8 DHW tank temperature
sensor, lower
S9 ECL 310 only:
Not used
S10 ECL 310 only:
A337.1, A337.2
Voltage signal (0 - 10 V) for
external control of desired
flow temperature
*
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 alternatively 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).
**** This sensor is used if only one tank temperature sensor is
required.
24 | © Danfoss | 2017.05
Recommended
type
ESMT
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
ESMB /
ESMU
ESMB /
ESMU
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.R3.02