26
VI.KT.F2.02
© Danfoss 06/2008
DH-SMT/DK
DH-SMT/DK
VI.KT.F2.02
© Danfoss 06/2008
27
* Optional connections for safety thermostat
Terminal
Description
Max. load
20
Supply voltage 24 V a.c. - A1
21
Supply voltage 24 V a.c. - A2
22
Optional connections for safety thermostat
23
Optional connections for safety thermostat
24
M1 Actuator - open
15 VA
25
M1 Actuator - close
15 VA
26
M1 Actuator - A1
27
Not to be used
28
Not to be used
29
P1
Phase for circulation pump (relay R2)
30
P1
Relay R2
4 (2) A
Wire cross section: 0.5 - 1.5 mm
2
Incorrect connection can damage the TRIAC outputs.
Electrical connections - 24 V a.c. - in general
Terminal
Description
Type
(recomm.)
1 and 2
Not to be used
3 and 4
S3
Flow temperature sensor
ESM-11 / ESMC / ESMU
5 and 6
S4
Return temperature sensor
ESM-11 / ESMC / ESMU
7
Not to be used
8 and 9
ECL BUS, connections for room panel /
remote control
ECA 60 / 62
ECA 61 / 63
10
Not to be used
11 and 12
Ext. override
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
