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PERFORMANCE DATA (cont)
Durablade Economizer Barometric
Relief Damper Characteristics —
580D036-150
Parablade Economizer Barometric
Relief Damper Characteristics —
580D036-072
Parablade Economizer Barometric
Relief Damper Characteristics —
580D090-150
ALTITUDE COMPENSATION* —
580D036-072
ELEVATION
(ft)
72,000 AND 115,000
BTUH NOMINAL
INPUT
150,000 BTUH
NOMINAL INPUT
Natural
Gas
Orifice
Size†
Liquid
Propane
Orifice
Size†
Natural
Gas
Orifice
Size†
Liquid
Propane
Orifice
Size†
0-2,000 33 43 30 38
2,000 34 43 30 39
3,000 35 44 31 40
4,000 36 44 32 41
5,000 36 44 33 42
6,000 37 45 34 43
7,000 37 45 35 43
8,000 38 46 36 44
9,000 39 47 37 44
10,000 41 48 38 45
11,000 43 48 39 45
12,000 44 49 40 46
13,000 44 49 41 47
14,000 45 50 42 47
*As the height above sea level increases, there is less oxygen per cubic
foot of air. Therefore, heat input rate should be reduced at higher
altitudes.
†Orifices available through your local distributor.
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