Gas Information - Nordyne 80+ AFUE *SA Installation Instructions Manual

TIME FOR
ONE REVOLUTION
(SECONDS)
10
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
42
44
46
48
50
52
54
56
58
60
62
64
NOMINAL BLACK
IRON PIPE
DIAMETER (IN.)
1/2
3/4
1
1 1/4
1 1/2
The cubic feet per hour listed in the table above must be greater than the cubic feet per hour of gas fl ow required by the
furnace. To determine the cubic feet per hour of gas fl ow required by the furnace, divide the input rate of the furnace by the
heating value (from gas supplier) of the gas.
32

GAS INFORMATION

GAS FLOW RATES (CUBIC FEET PER HOUR)
CUBIC FEET PER REVOLUTION
OF GAS METER
1 5
360 1,800
300 1,500
257 1,286
225 1,125
200 1,000
180 900
164 818
150 750
138 692
129 643
120 600
113 563
106 529
100 500
95 474
90 450
86 429
82 409
78 391
75 375
72 360
69 346
67 333
64 321
62 310
60 300
58 290
56 281
Table 6. Gas Flow Rates
CAPACITY OF BLACK IRON GAS PIPE (CU. FT. PER HOUR)
FOR NATURAL GAS (SPECIFIC GRAVITY - 0.60)
10 20
130 90
280 190
520 350
1,050 730
1,600 1,100
Cubic Feet Per Hour Required =
Table 7. Black Iron Gas Pipe Capacities
TIME FOR
ONE REVOLUTION
(SECONDS)
10
3,600 66
3,000 68
2,571 70
2,250 72
2,000 74
1,800 76
1,636 78
1,500 80
1,385 82
1,286 84
1,200 86
1,125 88
1,059 90
1,000 92
947 94
900 96
857 98
818 100
783 102
750 104
720 106
692 108
667 110
643 112
621 114
600 116
581 118
563 120
LENGTH OF PIPE RUN (FT)
30 40
75 65
150 130
285 245
590 500
890 760
NOTES
Input To Furnace (Btu/hr)
Heating Value of Gas (Btu/Cu. Ft.)
CUBIC FEET PER REVOLUTION
OF GAS METER
1 5
55 273
53 265
51 257
50 250
49 243
47 237
46 231
45 225
44 220
43 214
42 209
41 205
40 200
39 196
38 191
38 188
37 184
36 180
35 176
35 173
34 170
33 167
33 164
32 161
32 158
31 155
31 153
30 150
50 60 70
55 50 45
115 105 95
215 195 180
440 400 370
670 610
10
545
529
514
500
486
474
462
450
439
429
419
409
400
391
383
375
367
360
353
346
340
333
327
321
316
310
305
300
80
40
90
170
350