Viessmann VITOTRONIC 300 Installation And Service Instructions Manual page 81

Weather-compensated digital boiler and heating circuit control
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Contact temperature sensor,
part no. 7450 642
Connection
Check sensor
1.
2.
Flow or return
temperature
in °C
3.
Specification
º
H
H
?
aJ
Resistance
in W
º
º
81

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