Main Water Circuit; Sensors; Expansion Vessel - Sime BRAVA ONE OF ErP Serie Manual De Instalación Y Mantenimiento

EN
DESCRIPTION
TEMPERATURE - PRESSURE
Max operating temperature [T max]
Heating adjustment range
Domestic hot water adjustment range
Max operating pressure [PMS]
Water content in boiler
Lower Heat Output (Hi)
G20 Hi. 9.45 kW/m (15°C, 1013 mbar) - G30 Hi. 12.68 kW/kg (15°C, 1013 mbar) - G31 Hi. 12.87 kW/kg (15°C, 1013 mbar)
3
1.6

Main water circuit

1
2
3
4
5
6
8
7
13
M U
KEY:
M System delivery
R System return
U Domestic hot water outlet
E Domesti hot water inlet
S Safety valve outlet
G Gas supply
Smoke thermostat
1
Heat exchanger (mono-
2
thermal)
Dual sensor (thermal
3
safety/delivery)
Combustion chamber
4
Gas valve
5
kPa
19
17
18
9 10
15
14 S
11
12
G E R
Fig. 4
Domestic hot water heat
6
exchanger
7 Domestic hot water
sensor
Diverter valve
8
Automatic bleed valve
9
Pump
10
Domestic hot water flow
11
meter
Domestic hot water filter
12
System filling
13
System relief valve
14
Water pressure switch
15
Boiler drain
16
System expansion vessel
17
Water pressure gauge
18
Smoke chamber
19
°C
°C
°C
bar
l
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
0°C 27279 26135 25044
10°C 17959 17245 16563
20°C 12090 11634 11199
30°C 8313 8016 7731
5828 5630 5440
40°C
50°C 4161 4026 3897
60°C 3021 2928 2839
70°C 2229 2164 2101
80°C 1669 1622 1577
1266 1232 1199
90°C
100°C 973
16
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.
Brava One 25 OF ErP
85
20 ÷ 80
10 ÷ 60
3
300
3,15
3°C 4°C 5°C 6°C 7°C
24004 23014 22069 21168 20309
15912 15289 14694 14126 13582
10781 10382 9999 9633 9281
7458 7196 6944 6702 6470
5258 5082 4913 4751 4595
3773 3653 3538 3426 3319
2753 2669 2589 2512 2437
2040 1982 1925 1870 1817
1534 1491 1451 1411 1373
1168 1137 1108 1079 1051
Brava One OF ErP
U/M
l
kPa
bar
l
l
8°C 9°C
19489 18706
13062 12565
8945 8622
6247 6033
4444 4300
3216 3116
2365 2296
1766 1717
1336 1300
1024 998
25
8,0
100
1,0
4,0
109
69