10
Technical data for the accessory item
6 720 617 763 (2008/09)
2.3 Technical data
2.4 Supplementary accessories
•
ISM 1
: module for controlling solar water
heating.
2.5 Cleaning
B
If required, use a damp cloth to wipe the con-
troller casing. Never use aggressive or acidic
cleaning agents for this.
Dimensions
Rated voltage
10...24 V DC
Rated power
(excluding illumination)
6 mA
Controller output
2-wire BUS
Permissible ambient tem-
perature
0 ... +75 °C
Class of protection
III
Protection level:
- installed in Heatronic 3
- wall-mounted
IPX2D
IP20
Tab. 3
Specification
°C
Ω
AF
°C
Ω
AF
– 40
4124
– 4
1342
– 36
3776
±
0
1149
– 32
3419
4
984
– 28
3064
8
842
– 24
2718
12
720
– 20
2392
16
616
– 16
2088
20
528
– 12
1811
24
454
– 8
1562
Tab. 4
External temperature sensor measure-
ments