Speed Queen AT050E, Installation Manual

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Gas Requirements
M414905
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High Altitude Burner Orifice Sizing
For proper operation at altitudes above 2000 feet
(610 m), the gas burner orifice size must be reduced to
ensure complete combustion. Refer to
Table 6 .
For CE models, consult local gas supplier.
Table 6
Model Gas
Altitude Burner Orifice New Rate
feet meters No. inches mm Quantity Part Number (Btu/hr.)*
50 Pound
Natural Gas 2001-6000 610-1830 28 0.1405 3.6 2 M401014 110,400
6001-8000 1831-2440 29 0.1360 3.4 M400997 100,800
8001-10,000 2441-3050 30 0.1285 3.3 M401021 91,200
L.P. Gas 2001-4000 610-1220 44 0.0860 2.2 M401011 110,400
4001-6000 1221-1830 45 0.0820 2.1 M401027 100,800
6001-8000 1831-2440 46 0.0810 2.1 M401003 91,200
8001-10,000 2441-3050 47 0.0785 2.0 M400999 81,600
75 Pound
Natural Gas 2001-4000 610-1220 29 0.1360 3.4 3 M400997 151,800
4001-8000 1221-2440 30 0.1285 3.3 M401021 138,600
8001-10,000 2441-3050 31 0.1200 3.0 M401017 125,400
L.P. Gas 2001-4000 610-1220 45 0.0820 2.1 M401027 151,800
4001-6000 1221-1830 46 0.0810 2.1 M401003 138,600
6001-8000 1831-2440 47 0.0785 2.0 M400999 125,400
8001-10,000 2441-3050 48 0.0760 1.9 M401001 112,200
F75
Natural Gas 2001-4000 610-1220 23 0.1540 3.9 3 M401020 197,800
4001-6000 1221-1830 25 0.1495 3.8 M402997 180,600
6001-8000 1831-2440 27 0.1440 3.7 M400998 163,400
8001-10,000 2441-3050 29 0.1360 3.4 M400997 146,200
L.P. Gas 2001-4000 610-1220 42 0.0935 2.4 M403017 197,800
4001-6000 1221-1830 43 0.0890 2.3 M406184 180,600
6001-8000 1831-2440 44 0.0860 2.2 M401011 163,400
8001-10,000 2441-3050 45 0.0820 2.1 M401027 146,200
* Btu/hr. derate of 4% per 1000 feet (305 meters) of altitude.