Sensor Resistance Curves - Viessmann Vitocal 300-G BW Installation And Service Instructions Manual

Components

Sensor resistance curves

Temperature sensor
640
620
600
580
560
540
520
500
480
460
440
420
400
-40 -30 -20 -10 0
Temperature in °C
Room temperature sensors:
■ Capturing element made of "Ni 500"
■ Flow temperature sensors heating/
cooling circuit
■ Outside temperature sensor
■ Room temperature sensor
Appliance fuse protection
Note
The appliance fuse is located on PCB 1
of the message and safety components
(cross connect circuit board).
See page 61 and page 170.
Fuse F1:
■ 6.3 A slow, 250 V
■ Max. power loss ≤ 2,5 W
168
10 20 30 40 50 60
Further sensors
860
780
700
620
540
460
-20 20 60
Temperature
heat transfer medium in ºC
Further sensors:
■ Capturing element made of "Pt 500"
■ DHW cylinder sensors, top/bottom
■ Heating water buffer cylinder sensor
■ System flow sensor
■ External heat source sensor
■ All sensors are located inside the heat
pump module
Danger
Touching 'live' components can
result in the transfer of dangerous
body currents.
Before working on the equip-
ment, always ensure that the
power circuit is also at zero
volt.
Removing the fuse from the pro-
gramming unit does not switch
the power circuit to zero volt.
100 140 180