Bryant 583B - High Altitude Compensation; Natural Gas Orifice Conversion; Liquid Propane Orifice Conversion

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HIGH ALTITUDE COMPENSATION
NATURAL GAS ONLY
ORIFICE CONVERSION — 3.5 in. wg MANIFOLD PRESSURE*
*As the height above sea level increases, there is less oxygen per cubic ft of air.
Therefore heat input rate should be reduced at higher altitudes.
†Orifices available through your Bryant distributor.
LIQUID PROPANE ONLY
ORIFICE CONVERSION — 3.5 in. wg MANIFOLD PRESSURE*
*As the height above sea level increases, there is less oxygen per cubic ft of air.
Therefore, heat input rate should be reduced at higher altitudes.
†Orifices available through your Bryant distributor.
ALTITUDE (ft)
INPUT
(Btuh)
OUTPUT
(Btuh)
ORIFICE
NUMBER†
0-2000
40,000 31,000 #44
60,000 46,000 #38
90,000 70,000 #38
115,000 92,000 #33
130,000 103,000 #31
2001-4500
33,290 25,800 #49
49,930 38,300 #43
74,900 58,270 #43
95,700 76,560 #38
108,180 85,680 #36
4501-6000
31,310 24,270 #50
46,970 36,030 #44
70,450 54,810 #44
90,020 71,300 #40
101,760 80,590 #37
ALTITUDE (ft)
INPUT
(Btuh)
OUTPUT
(Btuh)
ORIFICE
NUMBER†
0-2000
40,000 31,000 #50
57,000 43,720 #46
85,500 66,520 #46
115,000 92,000 #42
127,000 100,580 #41
2001-4500
33,290 25,800 #53
47,430 36,380 #50
71,150 55,350 #50
95,700 76,560 #45
105,690 83,710 #44
4501-6000
31,310 24,270
NOT TO BE USED
ABOVE 4500 FT
44,620 34,220 #51
66,930 52,070 #51
90,020 72,020 #47
99,140 78,520 #45