A.O. Smith BFM - 100 Installation & Service Manual page 22

3
3.4.3
Description
Gas category: 30 through 100 II
Natural gas G20 - 20 mbar
Orifice diameter
Diameter of pilot flame orifice
(1) = Blank plate
(2) = Burner pressure regulator
Nominal load (upper value)
Nominal output
Supply pressure
(†)
Burner pressure
(*)
Gas consumption
LP gas data
G30 - 30 mbar (butane)
Orifice diameter
Diameter of pilot flame orifice
(1) = Blank plate
(2) = Burner pressure regulator
Nominal load (upper value)
Nominal output
Supply pressure
(†)
Burner pressure
(*)
Gas consumption
G31 - 37mbar (propane)
Orifice diameter
Diameter of pilot flame orifice
(1) = Blank plate
(2) = Burner pressure regulator
Nominal load (upper value)
Nominal output
Supply pressure
(†)
Burner pressure
(*)
Gas consumption
(*) Based on 1013.25 mbar and 15 °C.
(†) If using a blank plate instead of a burner pressure regulator, it is assumed that the burner pressure is equal to
the supply pressure. In practice, however, the burner pressure will be lower.
22
Installation
Gas data
Gas data
Unit BFM
30
, 120: II
2H3+ 2H3P
mm 2.60
mm 0.56/0.41
1 or 2 2
kW 32.2
kW 26.4
mbar 20
mbar 12.5
3
m /h 3.1
mm 1.45
mm 0.25
1 or 2 1
kW 31.4
kW 26.4
mbar 30
mbar -
kg/h 2.3
mm 1.45
mm 0.25
1 or 2 1
kW 30.4
kW 25.5
mbar 37
- -
kg/h 2.2
BFM BFM BFM
50 80 100
2.50 2.70 3.20
0.56/0.41 0.56/0.41 0.56/0.41
2 2 2
52.2 83.3 113.3
42.3 67.5 90.8
20 20 20
12.9 12.9 12.5
5.0 7.9 10.8
1.40 1.50 1.95
0.25 0.25 0.25
1 1 1
49.9 81.3 110.5
41.4 67.5 90.8
30 30 30
- - -
3.6 5.9 8.0
1.40 1.50 1.95
0.25 0.25 0.25
1 1 1
47.8 77.2 110.9
39.6 63.9 90.8
37 37 37
- - --
3.4 5.5 7.9
Instruction manual BFM
is
BFM
120
3.30
0.56/0.41
2
127.7
102.4
20
14.0
12.2
n.a.
2.30
0.25
2
125.0
102.4
37
22.0
8.9