Immersion Temperature Sensor; Mounting Base For Programming Unit; Radio Clock Receiver; Km Bus Distributor - Viessmann VITODENS 242-F Technical Manual

Control units
(cont.)

Immersion temperature sensor

Part no. 7438 702
To capture the temperature in a sensor well.
Immersion temperature sensor
Part no. 7179 488
To capture the low loss header temperature.
Specification
Lead length
IP rating

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 Frank-
furt/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 rein-
forced concrete, neighbouring buildings and sources of electro-mag-
netic 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
per)
■ 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 Vitotronic KM BUS.
VITODENS
3.75 m, fully wired
IP 32 acc. to EN 60529
ensure through appropriate
design/installation
2 (cop-
Specification
Cable length
IP rating
Sensor type
Permissible ambient temperature
– Operation
– Storage and transport
Sensor type
Permissible ambient temperature
– during operation
– during storage and transport
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
5.8 m, fully wired
IP 32 to EN 60529; ensure
through design/installation
Viessmann NTC 10 kΩ, at
25 °C
0 to +90 °C
−20 to +70 °C
Viessmann NTC 10 kΩ at
25 °C
0 to +90 °C
−20 to +70 °C
VIESMANN
97
7