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Gas Line Sizing for a Noritz Tankless Gas Water Heater
Maximum Natur
Natural Gas Delivery Capacity in Cubic Feet per Hour (0.60 Specific Gravity, 0.5" WC Pressure Drop)
Pipe
Size
3m (10') 6m (20')
1/2"
174
119
3/4"
363
249
1"
684
470
1 1/4"
1404
965
1 1/2"
2103
1445
2"
4050
2784
2 1/2"
4437
6455
3"
11,412
7843
3 1/2"
16,709
11,484
4"
23,277
15,998
Contact the Gas Supplier for Btu/Cubic Ft. of the Supplied Gas. 1000 BTU/Cubic Ft. is a Typical Value
Maximum Liquified P
Liquified Petroleum (Undiluted) Delivery Capacity in Thousands of Btuh (0.5" WC Pressure Drop)
Pipe
Size
3m (10') 6m (20')
9m (30') 12m (40') 15m (50') 18m (60') 21m (70') 24m (80') 27m (90') 30m (100')
1/2"
275
189
152
3/4"
567
393
315
1071
1"
732
590
1 1/4"
2205
1496
1212
1 1/2"
3307
2299
1858
2"
6221
4331
3465
** For reference only. Please consult gas pipe manufacturer for actual pipe capacities.
Maximum Capacity of Flex TracPipe in Cubic Feet per Hour of Natural Gas
Pipe
Size
3m (10')
6m (20')
206
147
3/4"
1"
383
269
1 1/4"
614
418
1 1/2"
1261
888
2"
2934
2078
Maximum Capacity of Flex TracPipe in Thousands of Btuh Liquified Petroleum
Pipe
Size
3m (10')
6m (20')
325
232
3/4"
1"
605
425
1 1/4"
971
661
1 1/2"
1993
1404
2"
4638
3285
** For reference only. Please consult gas pipe manufacturer for actual pipe capacities.
TracPipe® is a registered trademark of Omega Flex.
Maximum Capacity for Gas Flex Connectors in Cubic Feet per Hour of Natural Gas
Pipe
Size
300mm (12")
180
1/2"
3/4"
1"
1 1/4"
Maximum Capacity for Gas Flex Connectors in Thousands of Btuh Liquified Petroleum
Pipe
300mm (12")
Size
288
1/2"
3/4"
1"
1 1/4"
** For reference only. Please consult gas pipe manufacturer for actual pipe capacities.
Adapted from UPC 1997
Length in Feet
9m (30')
12m (40')
15m (50')
96
82
73
200
171
152
377
323
286
775
663
588
993
880
1161
1913
1696
2235
3049
2703
3563
6299
5391
4778
9222
7893
6995
12,847
10,995
9745
Length in Feet
129
114
103
267
237
217
504
448
409
1039
913
834
1559
1417
1275
2992
2646
2394
R
Length in Feet
9m (30')
12m (40')
15m (50')
18m (60')
121
105
94
86
218
188
168
153
334
284
251
227
723
625
559
509
1698
1472
1317
1203
R
Length in Feet
9m (30')
12m (40')
15m (50')
18m (60')
191
166
149
136
344
297
265
241
528
449
397
359
1143
988
884
805
2684
2327
2082
1902
Length in Inches
600mm (24")
900mm (36")
150
125
290
255
581
512
1470
1200
Length in Inches
600mm (24")
900mm (36")
240
200
465
409
930
825
2352
1920
18m (60')
21m (70')
24m (80')
27m (90')
66
61
56
138
127
118
259
239
222
532
490
456
798
734
683
1536
1413
1315
2449
2253
2096
4329
3983
3705
6338
5831
5425
8830
8123
7557
96
89
83
78
196
185
173
162
378
346
322
307
771
724
677
630
1086
1181
1023
976
2205
2047
1921
1811
(0.60 Specific Gravity, 0.5" WC Pressure Drop)
21m (70')
24m (80')
27m (90')
80
75
71
141
132
125
209
194
181
471
440
415
1114
1042
983
21m (70')
24m (80')
27m (90')
126
118
112
222
208
197
330
307
286
745
656
696
1761
1647
1554
(0.60 Specific Gravity, 0.5" WC Pressure Drop)
1200mm (48")
1500mm (60")
106
93
215
197
442
397
1130
960
1200mm (48")
1500mm (60")
169
149
344
315
708
638
1808
1536
30m (100')
37.5m (125')
53
50
44
111
104
93
208
197
174
428
404
358
641
605
536
1234
1165
1033
1646
1966
1857
3476
3284
2910
5090
4808
4261
7091
6698
5936
37.5m (125') 45m (150')
60m (200')
69
63
55
132
112
146
275
252
213
567
511
440
866
675
787
1496
1606
1260
60m (200')
30m (100') 45m (150')
67
55
48
118
94
82
171
137
116
393
320
277
933
762
661
( 0.5" WC Pressure Drop)
60m (200')
30m (100') 45m (150')
106
87
76
186
143
129
270
217
183
621
506
438
1475
1205
1045
1800mm (72")
86
173
347
930
( 0.5" WC Pressure Drop)
1800mm (72")
137
278
556
1488
47
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