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2.1 Technical specifications
Maximum operating pressure: 6 bar
Boiler thermostat setting: 30 to 90°C
Safety thermostat setting: 110 °C
Boiler
Useful output
Power input
Number of sections
Water content
∆ T = 10K
∆ T = 15K
Water resistance
∆ T = 20K
Pressure in the furnace for nozzle pressure
= 0
(1) (3)
Flue gas temperature
Mass flue gas flow
Fuel oil
(1) (2)
rate
Gas
Inscribed diameter
Equivalent diameter mm
Combustion chamber
Depth
Volume
Maintenance
∆ T = 30K
consumption*
*Maintenance consumption: total heat emission when the burner is
off as a percentage of the nominal input power when the difference
between the mean boiler temperature and the room temperature is
30 K.
(1)
Nominal operation (top boiler power)
)
(2
CO
= 13.1 to 13.5% with fuel oil and 9.5% with natural gas.
2
(3)
Boiler temperature: 80 °C
Ambient temperature: 20 °C
6
P 520-13
P 520-15
kW
696 to 754
812 to 870
kW
763 to 831
897 to 967
13
15
l
617
693
57.6
77.6
mbar
25.8
34.7
14.4
19.4
mbar
2.2
2.4
K
<190
<190
1070
1220
Kg/h
1120
1280
mm
614
614
694
694
mm
1372
1594
3
0.53
0.61
m
%
0.08
0.07
P 520
P 520-17
P 520-19
P 520-21
1044 to
1160 to
928 to 986
1102
1218
1022 to
1146 to
1265 to
1093
1216
1336
17
19
21
769
845
943
30.2
41.4
53.6
13.5
18.5
24
7.6
10.4
13.4
2.6
2.85
3.1
<190
<190
<190
1370
1520
1670
1440
1590
1750
614
614
614
694
694
694
1816
2038
2300
0.70
0.78
0.88
0.07
0.07
0.06
P 520-23
P 520-25
1276 to
1400 to
1334
1450
1393 to
1532 to
1464
1595
23
25
1019
1095
64.8
78.4
29
35
16.2
19.6
3.3
3.5
<190
<190
1820
1970
1910
2070
614
614
694
694
2522
2744
0.96
1.05
0.06
0.06
14/06/2012 - 300016859-001-01
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