Sensors; Contact Temperature Sensor; Immersion Temperature Sensor; Miscellaneous - Viessmann VITOCAL Series Technical Manual

Control unit accessories

9.6 Sensors

Contact temperature sensor

Part no. 7426463
As system flow temperature sensor in heating systems with heating
water buffer cylinder and/or external heat generator
4 2
9
6 6
Secured with a tie.

Immersion temperature sensor

Part no. 7438702
■ To capture the temperature in a sensor well
■ For installation in a DHW cylinder or heating water buffer cylinder

9.7 Miscellaneous

Contactor relay

Part no. 7814681
■ Contactor in small enclosure
■ With 4 N/C and 4 N/O contacts
■ With terminal strips for earth conductors
1 4
5
9 5

KM BUS distributor

Part no. 7415028
For the connection of 2 to 9 devices to the control unit KM-BUS
VIESMANN
140
(cont.)
Specification
Lead length
IP rating
Sensor type
Permissible ambient temperature
– Operation
– Storage and transport
Specification
Lead length
IP rating
Sensor type
Permissible ambient temperature
– Operation
– Storage and transport
Specification
Coil voltage
Rated current (I
5.8 m, fully wired
IP 32D to EN 60529; ensure through
design/installation
Viessmann NTC 10 kΩ at 25 °C
0 to +120 °C
–20 to +70 °C
5.8 m, fully wired
IP 32 to EN 60529; ensure through de-
sign/installation
Viessmann NTC 10 kΩ at 25 °C
0 to +90 °C
–20 to +70 °C
230 V/50 Hz
) AC1 16 A
th
AC3 9 A
VITOCAL