Water Circuit; Positioning The Temperature Sensors - Beretta POWER MAX Installation And Operation Manual

1.9 Water circuit

1
5
4
3
2
RI
Heat exchanger
1
Circulator (only for models POWER MAX 50 P DEP -
2
POWER MAX 80 P)
Drain cock
3
Minimum pressure switch
4
NTC return probe
5
NTC delivery probe
6
Safety thermostat temperature sensor
7
Automatic bleed valve
8
Flow-meter
9
Central heating flow
MI
Central heating return
RI
Values of NTC probes' resistors with changing temperatures.
Temperature °C
Tolerance test Resistor Ω
±10%
-40 191908
-35 146593
-30 112877
-25 87588
-20 68471
-15 53910
-10 42739
-5 34109
0 27396
5 22140
10 17999
15 14716
20 12099
25 10000
30 8308
35 6936
40 5819
6 7 8
9
MI
Temperature °C
Tolerance test Resistor Ω
±10%
45 4904
50 4151
55 3529
60 3012
65 2582
70 2221
75 1918
80 1663
85 1446
90 1262
95 1105
100 970
105 855
110 755
115 669
120 594
125 529

1.10 Positioning the temperature sensors

Probes placed on the related sockets of the thermal module
(POWER MAX 50 P DEP - POWER MAX 50 P):
Exhaust flue probe
1
Safety thermostat
2
CH flow temperature sensor
3
Return probe
4
2
4
1
Front view
Probes placed on the related sockets of the thermal module
(POWER MAX 65 P ÷ POWER MAX 150):
Exhaust flue probe
1
Safety thermostat
2
CH flow temperature sensor
3
Return probe
4
Front view
3
Side view
3
2
4
1
Side view
1
13
3
2
1