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PERFORMANCE DATA (cont)
HIGH ALTITUDE COMPENSATION
NATURAL GAS ONLY
ORIFICE CONVERSION — 3.5 in. wg MANIFOLD PRESSURE*
ALTITUDE (ft)
INPUT
(Btuh)
OUTPUT
(Btuh)
ORIFICE
NUMBER†
0-2000
40,000 32,040 #44
60,000 47,040 #38
90,000 71,910 #38
115,000 93,265 #33
130,000 104,390 #31
2001-4500
33,290 27,130 #49
49,930 40,690 #43
74,900 61,040 #43
95,700 78,000 #38
108,180 88,170 #36
4501-6000
31,310 25,520 #50
46,970 38,280 #44
70,450 57,420 #44
90,020 73,370 #40
101,760 82,930 #37
*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 distributor.
LIQUID PROPANE ONLY
ORIFICE CONVERSION — 3.5 in. wg MANIFOLD PRESSURE*
ALTITUDE (ft)
INPUT
(Btuh)
OUTPUT
(Btuh)
ORIFICE
NUMBER†
0-2000
40,000 33,200 #50
57,000 47,310 #46
85,500 70,965 #46
115,000 95,450 #42
127,000 105,410 #41
2001-4500
33,290 27,630 #53
47,430 39,370 #50
71,150 59,050 #50
95,700 79,430 #45
105,690 87,720 #44
4501-6000
31,310 25,990
NOT TO BE USED
ABOVE 4500 FT
44,620 37,030 #51
66,930 55,550 #51
90,020 74,720 #47
99,140 82,510 #45
*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 distributor.
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