ECL Comfort 210/310, A275/A375 Installation Guide - Danfoss ...

Installation Guide ECL Comfort 210 / 310, application A275 / A375
2.5.5 Electrical connections, Pt 1000 temperature sensors and signals
A275:
Terminal Sensor / description Type
(recomm.)
29 and 30 S1 Outdoor temperature sensor* ESMT
28 and 30 S2 A275.3 only:
Return temperature sensor,
circuit 2
27 and 30 S3 Boiler temperature sensor**,
circuit 1
26 and 30 S4 A275.3 only:
Flow temperature sensor**,
circuit 2
25 and 30 S5 Return temperature sensor,
circuit 1
24 and 30 S6 A275.2 / A275.3 only:
DHW tank temperature sensor,
circuit 2 / 3
23 and 30 S7 Room temperature sensor***,
circuit 1
22 and 30 S8 A275.3 only:
Room temperature sensor***,
circuit 2
ESM-11 / ESMB /
ESMC / ESMU
ESMU / ESMB
ESM-11 / ESMB /
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
ESM-11 / ESMB /
ESMC / ESMU
ESM-10
ESM-10
* 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.
** The boiler / 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).
*** 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'.
Factory established jumper:
30 to common terminal.
70 DEN-SMT/DK VI.GU.L1.02 Danfoss District Energy