Sensors; Expansion Vessel; Circulation Pump - Sime Brava One HE 25 ErP Manual De Instalación Y Mantenimiento

1.7

Sensors

The sensors installed have the following characteristics:
– Dual sensor (thermal safety/output) NTC R25°C; 10kΩ β25°-
85°C: 3435
– domestic hot water sensor NTC R25°C; 10kΩ β25°-85°C: 3435
– external sensor NTC R25°C; 10kΩ β25°-85°C: 3435
Correspondence of Temperature Detected/Resistance
Examples of reading:
TR=75°C → R=1925Ω
TR=80°C → R=1669Ω.
TR
0°C 1°C 2°C 3°C
0°C 27279 26135 25044 24004
10°C 17959 17245 16563 15912
20°C 12090 11634 11199 10781
30°C 8313 8016 7731 7458
5828 5630 5440 5258
40°C
50°C 4161 4026 3897 3773
60°C 3021 2928 2839 2753
2229 2164 2101 2040
70°C
80°C 1669 1622 1577 1534
1266 1232 1199 1168
90°C
973
100°C
1.8

Expansion vessel

The expansion vessel installed on the boilers has the following
characteristics:
Description
Total capacity
Prefilling pressure
Useful capacity
Maximum system
content (*)
(*) Conditions of:
Average maximum temperature of the system 85°C
Start temperature at system filling 10°C.
m
CAUTION
– For systems with water content exceeding the
maximum system content (as indicated in the
table) an additional expansion vessel must be
prearranged.
– The difference in height between the relief valve
and the highest point of the system cannot exceed
6 metres. If the difference is greater than 6 metres,
increase the prefilling pressure of the expansion
vessel and the system when cold by 0.1 bar for each
meter increase.
70
4°C 5°C 6°C 7°C 8°C
23014 22069 21168 20309 19489 18706
15289 14694 14126 13582 13062 12565
10382 9999 9633 9281 8945
7196 6944 6702 6470 6247
5082 4913 4751 4595 4444
3653 3538 3426 3319 3216
2669 2589 2512 2437 2365
1982 1925 1870 1817 1766
1491 1451 1411 1373 1336
1137 1108 1079 1051 1024
Brava One HE ErP
U/M
25 30 35
l 9,0
kPa 100
bar 1,0
l 5,0
l 124
1.9

Circulation pump

The flow-head performance curve available for the heating
system is shown in the graph below.
m
CAUTION
The appliance is equipped with a by-pass which
ensures water circulation in the boiler when the
thermostatic valves or cocks are used in the system.
RESIDUAL HEAD (mbar)
600
9°C
500
400
8622
300
6033
200
4300
3116
100
2296
0
1717
0 200
1300
998
40
10,0
6,0
140
35 40
25
400 600 800 1000
FLOW (l/h)
EN
30
1200
Fig. 5