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13 - MAINTENANCE
13.13 - Water and
fl ue temperature
sensor
The boiler has a number of sensors
that measure temperature. The
electrical resistance between the
sensor wires must correspond with
the values shown in fi gure 47.
The temperature sensors are: U1; U2,
U3, U6, U7 and U8. The location of
each sensor can be found in fi gure 1
and sections 13.15 and 13.16.
Figure 47
- Water temperature sensor's curve
13.14 - Outdoor
temperature sensor
(optional)
An outdoor temperature sensor (U4)
can be connected to the boiler (see
section 6.5). The electrical resistance
existing between the sensor wires
must correspond with the values
shown in fi gure 48.
Figure 48
- Outdoor temperature sensor's curve
65
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