Electrical connections
15
Sensors
(continued)
Sensor connections
A
Flue gas temperature sensor
(accessories)
B
Boiler temperature sensor
C
Tank temperature sensor
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
2
(copper)
E
Tank temperature sensor 2
5
3
0
3
2
6
9
v
1
.3
15
1
2
3
143
1
2
3
5b
1
2
3
145
1
2
3
191
1
2
3
1
2
3
3
1
2
3
1
1
2
3
5
B
D
C
E
A
Summary of Contents for Vitotronic 300 KW3
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