Viessmann Vitocal 300-G BW, Installation And Service Instructions Manual

Page: 168 / 216

168
Temperature sensor
400
-40 -30 -20 -10 0
Resistance in
Temperature in °C
420
440
460
480
500
520
540
560
580
600
10 20 30 40 50 60
620
640
Room temperature sensors:
■ Capturing element made of "Ni 500"
■ Flow temperature sensors heating/
cooling circuit
■ Outside temperature sensor
■ Room temperature sensor
Further sensors
460
20
540
100
Resistance in
Temperature
heat transfer medium in ºC
60 140 180
620
700
780
860
-20
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
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
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 .
Components
Sensor resistance curves
5368 522 UAE