Biasi Riva Plus HE M296.24SR/C, Руководство по обслуживанию, Страница: 28 / 40

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TemperaTure probe
12 temperature prObe
12 .1 function
The Temperature probe has the function of converting the tem-
perature of the water in the hydraulic circuit where it is installed
into an electrical signal (resistance).
The relation between temperature and electrical resistance is
stated in Figure 12.1.
figure 12 .1
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
9000
9500
10000
10500
11000
11500
12000
12500
20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100
Ω
°C
On the boiler there is one Temperature probe on the output of
the primary heat exchanger (c.h. temperature probe) A in Figure
12.2 and Figure 12.3.
figure 12 .2
c.h.
flow
c.h.
return
a
12 .2 checks
Sensor operation
warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
Disconnect the cable from the Temperature probe.
Measure the temperature of the pipe B where the Temper-
ature probe is located and check the electrical resistance
according to the graph in Figure 12.1.
12 .3 removal of the c .h . temperature probe
warning: isolate the boiler from the mains electrici-
ty supply before removing any covering or compo-
nent .
1 Remove all the case panels and the sealed chamber lid.
figure 12 .3
a
c
b
2 Remove the electric connector C and remove the c.h. tem-
perature probe A (Figure 12.3).
3 Reassemble the c.h. temperature probe carrying out the re-
moval operations in reverse order.