3 "gas data") – A.O. Smith 120 through 250 Series User Manual
Page 22
Installation
22
Instruction manual BFC
3
is
3.4.3
Gas data
Gas data
Description II
2H3+
Unit
BFC
28
BFC
30
BFC
50
BFC
60
Gas category 2H: G20 - 20 mbar
Injector orifice diameter
mm
4.90
5.10
7.00
7.10
(1) = Blank plate
(2) = Burner pressure regulator
1 or 2
2
2
2
2
Nominal load (gross calorific value)
kW
32.1
34.5
52.6
63.2
Nominal output
kW
30.5
32.7
48.8
59.6
Supply pressure
mbar
20
20
20
20
Burner pressure
mbar
8.5
8.5
8.5
11.5
Gas consumption
(*)
m
3
/h
3.1
3.3
5.0
6.0
General 3+
Injector orifice diameter
mm
2.50
2.60
3.40
3.80
(1) = Blank plate
(2) = Burner pressure regulator
1 or 2
1
1
1
1
Gas category: G30-30 mbar (butane)
Nominal load (gross calorific value)
kW
30.7
32.8
50.6
59.4
Nominal output
kW
29.8
31.8
48.1
57.4
Supply pressure
mbar
30
30
30
30
Burner pressure
(†)
mbar
-
-
-
-
Gas consumption
(*)
kg/h
2.2
2.4
3.7
4.3
Gas category: G31-37 mbar (propane)
Nominal load (gross calorific value)
kW
29.0
30.9
50.3
59.1
Nominal output
kW
28.1
29.8
47.7
56.9
Supply pressure
mbar
37
37
37
37
Burner pressure
(†)
mbar
-
-
-
-
Gas consumption
(*)
kg/h
2.1
2.2
3.6
4.2
(*) 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.