Danfoss C17, Руководство по установке

Страница: 14 / 65

Installa
tion
Connecting the temperature sensors and the bus
Terminal Description Type (recomm.)
15 and 16 System device bus*
17 and 16 S1 Supply temperature sensor ESM-11 / ESMC /
ESMU
18 and 16 S2 DHW charging temperature
sensor
ESM-11 / ESMC /
ESMU
19 and 16 S3 DHW temperature sensor
ESM-11 / ESMC /
ESMU
20 and 16 S4 Return temperature sensor ESM-11 / ESMC /
ESMU
21 and 16 S5 Lower tank temperature
sensor**
ESM-11 / ESMC /
ESMU
22 and 16 S6 Upper tank temperature
sensor**
ESM-11 / ESMC /
ESMU
* The system device bus is only active when the address 15 (line 199)
is chosen.
** If only one DHW temperature sensor is used, it must be connected to
terminal 22 as S6.
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