Desert Aire Aura QS Installation And Operation Manual page 26

Note: When sizing supply lines, consider possibilities of future expansion and
26
Desert Aire - QS/QV Manual
Cubic Feet per Hour based on 0.3" w.c. Pressure Drop
Specific Gravity for Natural Gas - 0.6 (Natural Gas - 1000BTU/Cubic Ft.)
Specific Gravity for Propane Gas - 1.6 (Propane Gas - 2550BTU/Cubic Ft.)
Length
of 1/2"
Pipe Natural
Propane
20' 92
30'
73
40' 63
50'
56
60' 50
70'
46
80' 43
90'
40
100' 38
125' 34
150'
31
175' 28
200'
26
Length
1-1/4"
of
Pipe
Natural Propane
20' 730
30' 590
40' 500
50' 440
60'
400
70' 370
80'
350
90' 320
100'
305
125' 275
150'
250
175' 225
200' 210
Refer to National Fuel Gas Code for additional information on line sizing.
Figure 9 - Gas Pipe Capacity in Cubic Feet per Hour
Capacity of Piping
Diameter of Piping
3/4"
Natural Propane
56 116
190
45 152
38
130
34
115
31
105
28
96
26 90
24
84
23 79
21
72
19 64
17
59
16 55
Diameter of Piping
1-1/2"
Propane
Natural
445 1100 671
360 543
890
305 760 464
268 409
670
244 610 372
226 342
560
214 323
530
195 299
490
186 281
460
168 410 250
153 232
380
137 350 214
128 195
320
increased requirements.
1"
Propane
Natural
214
350
93 174
285
79 149
245
70 131
215
64 119
195
59 110
180
55 104
170
51 98
160
48 92
150
44 79
130
39 73
120
36 67
110
34 61
100
2"
Propane
Natural
1281
2100
1007
1650
885
1450
775
1270
674
1105
641
1050
604
990
567
930
531
870
476
780
433
710
397
650
372
610