Flue Gas Temperature Sensor - Viessmann Vitotronic 300 KW3 Installation Instructions Manual

Sensors
(continued)
Sensor connections
145 15 3
1 2 3 1 2 3 1
A B
A Flue gas temperature sensor
(accessories)
B Boiler temperature sensor
C Tank temperature sensor
5 191
2 3 1 2 3 1 2 3
C
D Outdoor temperature sensor
(cores may be interchanged)
Installation point for outdoor
temperature sensor
North or north-western wall, 2 to
2.5 m / 6.5 to 8 ft above ground
level; in case of multi-storey
buildings in the upper half of the
second floor
Not above windows, doors or
ventilation outlets
Not immediately below balconies
or gutters
Do not render over
Connection
2-core cable with a maximum
length of 35 m/ 115 ft and a
cross-section of 1.5 mm
1 143 5b
1 2 3 1 2 3 1 2 3
D E
2
(copper)
Electrical connections
E Tank temperature sensor 2
15