Mounting Base For Programming Unit; Radio Clock Receiver; Km Bus Distributor; Mixer Extension Kit With Integral Mixer Motor - Viessmann Vitodens 300-W Technical Manual

Control units
(cont.)
Specification
Lead length
IP rating
Sensor type
Permissible ambient temperature
– Operation
– Storage and transport

Mounting base for programming unit

Part no. 7299 408
To be able to freely position the programming unit of the control unit
anywhere outside the appliance.
2 0

Radio clock receiver

Part no. 7450 563
For receiving the DCF 77 time signal (location: Mainflingen near
Frankfurt/Main).
Radio controlled setting of time and date.
Install on an outside wall, facing the transmitter. The reception may
be reduced by metallic elements in the building structure, e.g. steel
reinforced concrete, neighbouring buildings and sources of electro-
magnetic interference, e.g. HV and public transport lines.
Connection:
■ 2-core lead, length up to 35 m with a cross-section of 1.5 mm
(copper)
■ Never route this lead immediately next to 230/400 V cables

KM BUS distributor

Part no. 7415 028
For the connection of 2 to 9 devices to the control unit KM BUS.
7

Mixer extension kit with integral mixer motor

Part no. 7301 063
KM BUS subscriber
VIESMANN
102
3.75 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
To be fitted directly to the wall or a surface box.
Distance from the boiler: Observe the lead length incl. plugs of 5 m.
Comprising:
■ Wall mounting base with fixing materials
■ 5 m long cable with plugs
■ Cover for the control unit aperture on the boiler
6 6
4 1
2
Specification
Lead length
IP rating
Permissible ambient temperature
– Operation
– Storage and transport
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
3.0 m, fully wired
IP 32 to EN 60529; ensure through de-
sign/installation
0 to +40 °C
−20 to +65 °C
VITODENS