Ferroli Sigma 30 FF 41-267-07 Installation And Servicing Instruction page 4

Wall mounted cast iron, gas fired boiler for central heating fan assisted, room sealed, electronic flame ignition and control
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1.03 Technical data
Heat
output
Model
Max
kW
8,8
Sigma 40
11,7
Sigma 50
14,7
17,6
Gas supply pressures
Model
G20-NG
mbar
Sigma 30
Sigma 40
Sigma 50
Sigma 60
Model
Flow
1
Ø
Sigma 30
22
22
Sigma 50
22
Sigma 60
22
N.B. • Maximum working temperature 100°C, adjustable between 60°C and 82°C.
4
Heat
input
(net)
Min
Max
Min
kW
kW
kW
5,5
9,8
6,1
8,5
13,0
9,4
11,4
16,3
12,7
14,4
19,5
16,0
G31-LPG
mbar
20
37
20
37
20
37
20
37
Max. working
Connections
Return
Gas inlet
2
3
Ø
Ø
22
15
22
15
22
15
22
15
Sigma
Heat
input
(gross)
G20-NG
Max
Min
Ø
kW
kW
10,9
6,8
2,6
14,4
10,5
3,0
18,1
14,1
3,30
21,7
17,8
3,60
Burner gas pressures
G20-NG
Minimum
mbar
6,2
7,3
9,3
10,7
pressure
Protection
level
C.H.circuit
bar
3
IP 40
3
IP 40
3
IP 40
3
IP 40
Injectors
(mm)
G20 m
G31-LPG
Ø
Max
1,6
1,03
1,8
1,37
2,10
1,72
2,30
2,06
Nominal
Minimum
mbar
mbar
15,3
14,0
14,0
19,0
15,3
23,6
15,3
25,0
Boiler
water
Weight
contents
kg
litres
30
1,3
30
1,3
35
1,6
35
1,6
Gas flow rates
3
/h-NG
G31 kg/h-LPG
Min
Max
Min
0,64
0,77
0,48
0,99
1,02
0,74
1,34
1,28
0,99
1,69
1,53
1,25
G31-LPG
Nominal
mbar
36
36
36
36
Gas valve
Ø 1/2"
Honeywell
VK 4105 A
VK 4105 A
VK 4105 A
VK 4105 A

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