VI.KT.G6.02
38 | © Danfoss | 2016.05
Installation
Terminal Description Type (recomm.)
1 and 2 S1 Outdoor temperature sensor ESMT
3 and 4 S3 Flow temperature sensor* ESM-11 / ESMC / ESMU
5 and 6 S4 Return temperature sensor ESM-11 / ESMC / ESMU
7 and 8 S2 Room temperature sensor ESM-10
8 and 9 ECL BUS, connections for room panel /
remote control
ECA 61
10 Not to be used
11 and 12 Ext. override
*
The 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).
Wire cross section for sensor connections: 0.4 - 0.75 mm
2
Total cable length: Max. 125 m (all sensors incl. the ECL BUS)
Cable lengths of more than 125 m may cause noise sensibility (EMC).
Connecting the temperature sensors and the ECL BUS
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