Installa
tion
Installa
tion
14b
It is important that the sensors are mounted in the correct
position in your system.
The temperature sensor mentioned below are sensors used
for the ECL Comfort 200 and 300 series which not all will be
needed for your application!
Outdoor temperature sensor (ESMT)
The outdoor sensor should be mounted on that side of the
building where it is less likely to be exposed to direct
sunshine. It should not be placed close to doors, windows or
air outlets.
Flow temperature sensor (ESMU, ESM-11 or ESMC)
Place the sensor max. 15 cm from the mixing point. In
systems with heat exchanger, Danfoss recommends that the
ESMU-type to be inserted into the exchanger flow outlet.
Make sure that the surface of the pipe is clean and even
where the sensor is mounted.
Return temperature sensor (ESMU, ESM-11 or ESMC)
The return sensor should always be placed in / on a pipe with
return water flow.
Room temperature sensor (ESM-10, ECA 60 / 62 room
panel or ECA 61 / 63 remote control)
Place the room sensor in the room where the temperature is
to be controlled. Do not place it on outside walls or close to
radiators, windows or doors.
DHW temperature sensor (ESMU or ESMB-12)
Place the DHW temperature sensor according to the
manufacturer’s specification.
Boiler temperature sensor (ESMU, ESM-11 or ESMC)
Place the sensor according to the boiler manufacturer’s
specification.
Flow / air duct temperature sensor (ESM-11, ESMB-12,
ESMC or ESMU types)
Place the sensor so that it measures a representative
temperature.
Slab temperature sensor (ESMB-12)
Place the sensor in the slab.
Valid for ESM-11: Do not move the sensor after it has been
fastened in order to avoid damage to the sensor element.
Connecting the temperature sensors and the bus
Terminal Description
Type
(recomm.)
15 and 16
System device bus*,
connections for room panel
/ remote control / (relay
module)
ECA 60 / 62
ECA 61 / 63
17 and 16
S1 Outdoor temperature
sensor
ESMT
18 and 16
S2 Return temperature sensor,
circuit I, heating I
ESM-11 / ESMC /
ESMU
19 and 16
S3
Flow temperature sensor,
circuit I, heating I
ESM-11 / ESMC /
ESMU
20 and 16
S4 Flow temperature sensor,
circuit II, heating II
ESM-11 / ESMC /
ESMU
21 and 16
S5 Flow temperature sensor,
circuit III, DHW
ESM-11 / ESMC /
ESMU
22 and 16
S6 Return temperature sensor,
circuit II, heating II
ESM-11 / ESMC /
ESMU
30 and 34
S7 Primary flow temperature
sensor
AKS 21 M
31 and 34
S8 Temperature readout
32 and 34
S9 Temperature readout
33 and 34 S10 External alarm input**
*
The system device bus / room panel / remote control is only active
when the outdoor temperature sensor is connected.
** S10 operates as a digital input for an external alarm which activates
relay R4 which again gives the alarm signal. The readout sequence
is 28 seconds. Please note that the contacts should be goldplated.
Establish the jumper from 16 to common terminal.
Wire cross section for sensor connections:
Min. 0.4 mm
2
Total cable length: Max. 125 m (all sensors incl. system device
bus)
Cable lengths of more than 125 m may cause noise sensibility
(EMC).
Connecting and placing the
temperature sensors
14a
