Room Temperature Sensor - Viessmann VITOTRONIC 300 GW2 Installation And Service Instructions Manual

Additional information
System components
Room temperature sensor, Part No. 7133 379
A To control unit
B Remote control
590
580
570
560
550
540
530
520
510
500
0 5 10
32 41 50
Room temperature in °C / °F
112
(continued)
1 2
B
145
A
C Room temperature sensor
15 20 25 30 35
59 68 77 86 95
3 4
C
40
104
Accessory
The room temperature sensor
serves to measure the room
temperature where the remote
control cannot be located in a
suitable position.
Technical data
Degree of protection: IP 30
Ambient
temperature
During operation:
0 to + 40°C
32 to + 104°F
During storage
and transport:
–20 to + 65°C
–4 to + 149°F
Electrical connection
Two-core cable, max. 35 m / 115 ft
long, with a conductor cross-section
2
of 1.5 mm copper.
Set coding switch 3 on the rear of
the top part of the remote control
case to "ON" (see page 107).
Check room temperature sensor
1. Disconnect the wires at the
sensor terminals.
2. Measure the resistance of the
sensor at terminals "9" and "13b".
Room Resistance
in 
temperature
in °C / °F
10 / 50 522
15 / 59 534
25 / 77 557
3. Compare the value measured
with the current temperature
(to scan: see page 74).
If the value differs significantly,
check installation and, if
necessary, replace sensor.