A.O. Smith ADM - 115, Installation & Service Manual

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Installation
20 Instruction manual ADM
3
is
3.4.3 Gas data
Gas data
Description II
2H3+
Unit ADM
40 ADM
50 ADM
60 ADM
80 ADM
90 ADM
115 ADM
135
Gas category 2H: General
Orifice diameter mm 3.20 3.20 3.10 2.95 3.20 3.20 3.90
(1) = Blank plate
(2) = Burner pressure regulator
(3) = High/low regulator 1, 2 or 3 2 2 2 2 2 2 2
Gas category G20 - 20 mbar
Nominal load (gross calorific value) kW 42.2 56.5 66.4 82.5 98.3 126.6 143.4
Nominal output kW 32.3 42.8 50.2 62.4 74.3 95.8 109.8
Supply pressure mbar 20 20 20 20 20 20 20
Burner pressure mbar 8.5 8.5 8.5 8.5 8.5 8.5 11.3
Gas consumption
(*)
m
3
/h 4.0 5.4 6.3 7.9 9.4 12.1 13.7
Gas category 3+: General
Orifice diameter mm 1.70 1.70 1.70 1.50 1.70 1.70 2.25
(1) = Blank plate
(2) = Burner pressure regulator
(3) = High-low control 1, 2 or 3 1 1 1 1 1 1 3
Gas category G30 - 30 mbar
Nominal load (gross calorific value) kW 41.6 55.3 68.2 80.7 96.1 123.5 138.4
Nominal output kW 32.6 42.8 52.8 62.6 74.5 95.8 108.5
Supply pressure mbar 30 30 30 30 30 30 30
Burner pressure
(†)
mbar - - - - - - -
Gas consumption
(*)
kg/h 3.0 4.0 5.0 5.9 7.0 9.0 10.1
Gas category G31 - 37 mbar
Nominal load (gross calorific value) kW 38.4 51.1 63.3 77.7 89.6 113.0 130.1
Nominal output kW 30.0 39.5 48.9 60.1 69.2 87.4 101.7
Supply pressure mbar 37 37 37 37 37 37 37
Burner pressure
(†)
mbar - - - - - - -
Gas consumption
(*)
kg/h 2.7 3.7 4.5 5.6 6.4 8.1 9.3
(*) 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.