Gas Information - Nordyne R8HE Series Installation Instructions Manual

NOMINAL PIPE
DIAMETER (IN.)
1/2
3/4
1
1 1/4
1 1/2
Cubic Feet Per Hour Required =
NOTE: The cubic feet per hour listed in the table above must be greater than the cubic feet per hour of gas flow required by
the furnace. To determine the cubic feet per hour of gas flow required by the furnace, divide the input rate of the furnace by
the heating value (from gas supplier) of the gas.
GAS FLOW RATES
(CUBIC FEET PER HOUR)
TIME FOR
REVOLUTION OF GAS METER
ONE REVOLUTION
(SECONDS)
1
10 360
12 300
14 257
16 225
18 200
20 180
22 164
24 150
26 138
28 129
30 120
32 113
34 106
36 100
38 95
40 90
42 86
44 82
46 78
48 75
50 72
52 69
54 67
56 64
58 62
60 60
62 58
64 56

Gas Information

CAPACITY OF BLACK IRON GAS PIPE (CU. FT. PER HOUR)
FOR NATURAL GAS (SPECIFIC GRAVITY - 0.60)
10 20 30
130 90 75
280 190 150
520 350 285
1,050 730 590
1,600 1,100 890
Table 14. Gas Pipe Capaacities
CUBIC FEET PER
5 10
1,800 3,600
1,500 3,000
1,286 2,571
1,125 2,250
1,000 2,000
900 1,800
818 1,636
750 1,500
692 1,385
643 1,286
600 1,200
563 1,125
529 1,059
500 1,000
474 947
450 900
429 857
409 818
391 783
375 750
360 720
346 692
333 667
321 643
310 621
300 600
290 581
281 563
Table 15. Gas Flow Rates
LENGTH OF PIPE RUN (FEET)
40 50
65 55
130 115
245 215
500 440
760 670
Input To Furnace (Btu/hr)
Heating Value of Gas (Btu/Cu. Ft.)
GAS FLOW RATES
(CUBIC FEET PER HOUR)
TIME FOR
ONE REVOLUTION
(SECONDS)
66
68
70
72
74
76
78
80
82
84
86
88
90
92
94
96
98
100
102
104
106
108
110
112
114
116
118
120
60 70 80
50 45 40
105 95 90
195 180 170
400 370 350
610
CUBIC FEET PER
REVOLUTION OF GAS METER
1 5 10
55 273 545
53 265 529
51 257 514
50 250 500
49 243 486
47 237 474
46 231 462
45 225 450
44 220 439
43 214 429
42 209 419
41 205 409
40 200 400
39 196 391
38 191 383
38 188 375
37 184 367
36 180 360
35 176 353
35 173 346
34 170 340
33 167 333
33 164 327
32 161 321
32 158 316
31 155 310
31 153 305
30 150 300
29