Sensors; Expansion Vessel; Circulation Pump - Sime BRAVA SLIM HE 25/55 Manual De Instalación Y Mantenimiento

EN
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 temperature 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 4°C
0°C 27279 26135 25044 24004 23014
10°C 17959 17245 16563 15912 15289
20°C 12090 11634 11199 10781 10382
30°C 8313 8016 7731 7458 7196
40°C 5828 5630 5440 5258 5082
50°C 4161 4026 3897 3773 3653
3021 2928 2839 2753 2669
60°C
70°C 2229 2164 2101 2040 1982
80°C 1669 1622 1577 1534 1491
1266 1232 1199 1168 1137
90°C
100°C 973
1.8

Expansion vessel

The expansion vessel installed on the boilers has the following
characteristics:
Description U/M
Total capacity l
kPa
Prefilling pressure
bar
Useful capacity l
Maximum system
l
content (*)
(*) Conditions of:
Average operating temperature 70°C (with high
temperature system 80/60°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.
5°C 6°C 7°C 8°C 9°C
22069 21168 20309 19489 18706
14694 14126 13582 13062 12565
9999 9633 9281 8945 8622
6944 6702 6470 6247 6033
4913 4751 4595 4444 4300
3538 3426 3319 3216 3116
2589 2512 2437 2365 2296
1925 1870 1817 1766 1717
1451 1411 1373 1336 1300
1108 1079 1051 1024 998
Brava Slim HE ErP
Heating Hot water
10 2,5
100 100
1,0 1,0
6,0 -
140 -
1.9

Circulation pump

The flow-head performance curve available for the heating
system is shown in the graph below.
RESIDUAL HEAD (mbar)
600
500
400
300
200
100
0
0 200 400
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.
30
25
600 800 1000 1200
FLOW (l/h)
Fig. 5
75