Danfoss ECL Comfort 296 Operating Manual page 21

Operating Guide ECL Comfort 210/296/310, application A230
2.5.4 Electrical connections, Pt 1000 temperature sensors and signals
See also the Installation Guide (delivered with the application key)
for application specific connections.
Sensor Description
S1 Outdoor temperature sensor* ESMT
S2 Room temperature sensor **
Alternative: ECA 30 / 31
S3 Flow temperature sensor***
S4 A230.1, A230.2: Supply
temperature sensor, for
monitoring
A230.4: DHW temperature
sensor, for monitoring
Return temperature sensor
S5
S6 A230.2: Return temperature
sensor, for monitoring
A230.4: DHW circulation
return temperature sensor, for
monitoring
S7 Flow / energy meter (pulse
signal)
S8
A230.2: Desired cooling
temperature, 0 - 10 V
A230.4: Pressure transmitter,
0 - 10 V. Alternatively, desired
heating temperature, 0 - 10 V
*
A230.1, A230.4: 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 the Installation Guide
(delivered with the application key) for specific connections.
*** 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).
Connection of flow / energy meter with pulse signal
See the Installation Guide (delivered with the application key).
The output of the flow / energy meter can be equipped with an
external pull-up resistor if an internal pull-up resistor is not present.
VI.LG.H4.02
Recommended type
ESM-10
ESM-11 / ESMB /
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
ESM-11 / ESMB /
ESMC / 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).
© Danfoss | 2017.05 | 21