A375:
TerminalSensor/description
Type
(recomm.)
29and30
S1
Outdoortemperaturesensor*
ESMT
28and30
S2
A375.3only:
Returntemperaturesensor,
circuit2
ESM-11/ESMB/
ESMC/ESMU
27and30
S3
Boilertemperaturesensor**,
circuit1
ESMU/ESMB
26and30
S4
A375.3only:
Flowtemperaturesensor**,
circuit2
ESM-11/ESMB/
ESMC/ESMU
25and30
S5
Returntemperaturesensor,
circuit1
ESM-11/ESMB/
ESMC/ESMU
24and30
S6
A375.2/A375.3only:
DHWtanktemperaturesensor,
circuit2/3
ESM-11/ESMB/
ESMC/ESMU
23and30
S7Roomtemperaturesensor***,
circuit1
ESM-10
22and30
S8
A375.3only:
Roomtemperaturesensor***,
circuit2
ESM-10
20and30
S10
Voltagesignal(0–10V)for
externalcontrolofdesired
boilertemperature,circuit1.
*
Iftheoutdoortemperaturesensorisnotconnectedorthe
cableisshort-circuited,thecontrollerassumesthatthe
outdoortemperatureis0(zero)°C.
**
Theboiler/flowtemperaturesensormustalwaysbe
connectedinordertohavethedesiredfunctionality.Ifthe
sensorisnotconnectedorthecableisshort-circuited,the
motorizedcontrolvalvecloses(safetyfunction).
***
Onlyforroomtemperaturesensorconnection.Theroom
temperaturesignalcanalsobeavailablefromaRemote
ControlUnit(ECA30/31).See'Electricalconnections,ECA
30/31'.
Factoryestablishedjumper:
30tocommonterminal.
A375only:
Connectionofvoltagesignal(0–10V)forexternalcontrolof
desiredboilertemperature
VI.GU.L2.02
©Danfoss|2017.09|71
OperatingGuideECLComfort210/296/310,applicationA275/A375