Km Bus Distributor - Viessmann VITODENS 242-F Technical Manual

Control units
(cont.)

KM BUS distributor

Part no. 7415028
For the connection of 2 to 9 devices to the control unit KM-BUS
Mixer extension kit with integral mixer motor
Part no. ZK02940
KM-BUS subscribers
Components:
■ Mixer PCB with mixer motor for Viessmann mixer DN 20 to DN 50
and R ½ to R 1¼
■ Flow temperature sensor (contact temperature sensor)
■ Plug for connecting the heating circuit pump
■ Power cable (3.0 m long) with plug
■ Bus connecting cable (3.0 m long) with plug
The mixer motor is mounted directly onto the Viessmann mixer
DN 20 to DN 50 and R ½ to R 1¼.
Mixer PCB with mixer motor
0
1 8
Specification, mixer PCB with mixer motor
Rated voltage 230 V~
Rated frequency 50 Hz
Rated current 2 A
Power consumption 5.5 W
IP rating IP 32D to EN 60529; ensure through
design/installation
Protection class I
Permissible ambient temperature
– Operation 0 to +40 °C
– Storage and transport –20 to +65 °C
Rated breaking capacity
of the relay output for
heating circuit pump sÖ
2(1) A, 230 V~
Torque 3 Nm
Runtime for 90° ∢
120 s
VITODENS
1 3
0
Specification
Lead length 3.0 m, fully wired
IP rating IP 32 to EN 60529; ensure through de-
sign/installation
Permissible ambient temperature
– Operation 0 to +40 °C
– Storage and transport −20 to +65 °C
Flow temperature sensor (contact temperature sensor)
4 2
6 6
Secured with a tie.
Specification, flow temperature sensor
Cable length 2.0 m, fully wired
IP rating IP 32D to EN 60529; ensure through
design/installation
Sensor type Viessmann NTC 10 kΩ at 25 °C
Permissible ambient temperature
– Operation 0 to +120 °C
– Storage and transport –20 to +70 °C
6
VIESMANN
89