3.2
Technical data
Tab.1
General
Boiler speed
Unit
SIRIUS
THREE FS
50
SIRIUS
THREE FS
70
SIRIUS
THREE FS
90
SIRIUS
THREE FS
110
Useful heat output at 80/60°C
Heating mode
Minimum
kW
5.0
7.2
9.4
11.4
Useful heat output at 80/60°C
Heating mode
Maximum
kW
45
65
85
102
Useful heat output at 50/30 °C
Heating mode
Minimum
kW
5.4
7.8
10.2
12.3
Useful heat output at 50/30 °C
Heating mode
Maximum
kW
48.6
70.2
91.8
110.2
Heat input -
Heating mode
Minimum
kW
5.1
7.4
9.7
11.7
Heat input -
Heating mode
Maximum
kW
46.3
66.9
87.4
104.9
Heat input -
Heating mode
Minimum
kW
5.6
8.2
10.7
12.9
Heat input -
Heating mode
Maximum
kW
51.4
74.2
97.0
116.4
Efficiency at 80/60 °C -
Heating mode under full load
Maximum
%
97.4
97.2
97.3
97.2
Efficiency at 50/30 °C -
Heating mode un
der full load
%
105.0
105.0
105.5
105.1
Efficiency - - Return temperature
30°C
Heating mode un
der part load
%
108.4
108.1
108.2
108.1
(1) The heat input with G31 gas is different and is 12.5 kW
Tab.2
Characteristics of the heating circuit
Unit
SIRIUS
THREE FS 50
SIRIUS
THREE FS 70
SIRIUS
THREE FS 90
SIRIUS
THREE FS
110
Water content (excluding expansion vessel) litre
2.81
4.98
8.34
9.83
Minimum operating pressure
MPa (bar)
0.05 (0.5)
0.05 (0.5)
0.05 (0.5)
0.05 (0.5)
Maximum operating pressure (MOP)
MPa (bar)
0.38 (3.8)
0.38 (3.8)
0.38 (3.8)
0.38 (3.8)
Maximum water temperature
°C
85
85
85
85
Maximum operating temperature
°C
80
80
80
80
Tab.3
Data on the gases and combustion gases
For gas flow rates at 15°C and
1013.25 hPA
Boiler speed
Unit
SIRIUS
THREE FS
50
SIRIUS
THREE FS
70
SIRIUS
THREE FS
90
SIRIUS
THREE FS
110
Minimum gas pressure (G20)
mbar
17
17
17
17
Nominal pressure (G20)
mbar
20
20
20
20
Maximum pressure (G20)
mbar
25
25
25
25
Minimum gas pressure (G25)
mbar
20
20
20
20
Nominal pressure (G25)
mbar
25
25
25
25
Maximum pressure (G25)
mbar
30
30
30
30
Minimum gas pressure (G31)
mbar
25
25
25
25
Nominal pressure (G31)
mbar
37
37
37
37
Maximum pressure (G31)
mbar
57.5
57.5
57.5
57.5
Consumption of natural gas (G20)
Minimum
m³/h
0.54
0.78
1.03
1.24
Consumption of natural gas (G20)
Maximum
m³/h
4.90
7.07
9.25
11.10
3 Technical specifications
12
7609493 - v08 - 24072018
