Noritz ecoTOUGH NRC98-DV Installation Manual page 20

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