A.O. Smith ADM - 40 Installation, User And Service Manual page 21

3.4.3 Gas data
Description II
2H3+
Gas category 2H: General
Orifice diameter
(1) = Blank plate
(2) = Burner pressure regulator
(3) = High/low regulator
Gas category G20 - 20 mbar
Nominal load (gross calorific value)
Nominal output
Supply pressure
Burner pressure
(*)
Gas consumption
Emissions of Nitrogen Oxides (NO )
2
Gas category 3+: General
Orifice diameter
(1) = Blank plate
(2) = Burner pressure regulator
(3) = High-low control
Gas category G30 - 30 mbar
Nominal load (gross calorific value)
Nominal output
Supply pressure
(†)
Burner pressure
(*)
Gas consumption
Gas category G31 - 37 mbar
Nominal load (gross calorific 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.
Unit ADM 40 ADM 50
mm 3.20 3.20
1, 2 or 3 2 2
kW 42.2 56.5
kW 32.3 42.8
mbar 20 20
mbar 8.5 8.5
3
m /h 4.0 5.4
mg/kWh
mg/kw 240 235
mm 1.70 1.70
1, 2 or 3 1 1
kW 41.6 55.3
kW 32.6 42.8
mbar 30 30
mbar - -
kg/h 3.0 4.0
kW 38.4 51.1
kW 30.0 39.5
mbar 37 37
mbar - -
kg/h 2.7 3.7
ADM 60 ADM 80 ADM 90
3.10 2.95 3.20
2 2 2
66.4 82.5 98.3
50.2 62.4 74.3
20 20 20
8.5 8.5 8.5
6.3 7.9 9.4
235 229 283
1.70 1.50 1.70
1 1 1
68.2 80.7 96.1
52.8 62.6 74.5
30 30 30
- - -
5.0 5.9 7.0
63.3 77.7 89.6
48.9 60.1 69.2
37 37 37
- - -
4.5 5.6 6.4
ADM 115 ADM 135
3.20 3.90
2 2
126.6 143.4
95.8 109.8
20 20
8.5 11.3
12.1 13.7
311 276
1.70 2.25
1 3
123.5 138.4
95.8 108.5
30 30
- -
9.0 10.1
113.0 130.1
87.4 101.7
37 37
- -
8.1 9.3