Water Circuit - Riello Steel Pro Power 114-2 P Installation, Technical Assistance Service And System Management Manual

1.10 Water circuit

5
3
2
RI
MI
1 Heat exchanger
2 Pump (only for "P" models)
3 Drain cock
4 Minimum pressure switch
5 NTC return probe
6 NTC delivery probe
7 Safety thermostat temperature sensor
8 Automatic bleed valve
Values of NTC probes' resistors with changing temperatures.
Temperature °C
Tolerance test ±10%
-40
-35
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
35
40
1 6 7 8
4 10 11
Resistor Ω
191908
146593
112877
87588
68471
53910
42739
34109
27396
22140
17999
14716
12099
10000
8308
6936
5819
1
5
9
3
2
9 Flow-meter
10 Water return manifold
11 Water flow manifold
MI Central heating flow
RI Central heating return
Temperature °C
Tolerance test ±10%
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
17
GENERAL INFORMATION
6 7 8
9
RI
MI
Resistor Ω
4904
4151
3529
3012
2582
2221
1918
1663
1446
1262
1105
970
855
755
669
594
529