Sensors; Expansion Vessel; Circulation Pump - Sime MURELLE REVOLUTION 30 User, Installation And Servicing Instructions

4.8

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
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
100°C 973
Correspondence of Temperature Detected/Resistance
Examples of reading:
TR=75°C → R=1925Ω
TR=80°C → R=1669Ω.
4.9

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 max-
imum system content (as indicated in the table) an
additional expansion vessel must be fitted.
– 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.
26
4°C 5°C 6°C 7°C 8°C 9°C
23014 22069 21168 20309 19489 18706
15289 14694 14126 13582 13062 12565
10382 9999 9633 9281 8945 8622
7196 6944 6702 6470 6247 6033
5082 4913 4751 4595 4444 4300
3653 3538 3426 3319 3216 3116
2669 2589 2512 2437 2365 2296
1982 1925 1870 1817 1766 1717
1491 1451 1411 1373 1336 1300
1137 1108 1079 1051 1024 998
Murelle Revolu-
U/M
tion 30
l 9,0
kPa 100
bar 1,0
l 5,0
l 124
4.10

Circulation pump

The flow-head performance curve available for the heating sys-
tem 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 en-
sures water circulation in the boiler when thermo-
static valves are used in the system. The heating sys-
tem design should incorporate a room thermostat.
Thermostatic radiator valves fitted to all radiators
except the room where the room thermostat is fitted.
Properties with floor areas exceeding 150squre me-
tres should be zoned.
600 800 1000 1200
FLOW (l/h)
Fig. 36