Navien NCB-180, Руководство по обслуживанию

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in Cubic Feet (ft 3 ) per Hour (0.60 Specific Gravity; 3.0” WC Pressure Drop). Contact your gas supplier for BTU/ft 3 ratings. Use 1,000
BTU/ft3 for simplified calculations. This table is recommended for supply pressures of 6” WC or greater.
Pipe
Size
Length (including fittings)
10'
(3m) 20'
(6m) 30'
(9m) 40'
(12m) 50'
(15m) 60'
(18m) 70'
(21m) 80'
(24m) 90'
(27m) 100'
(30m) 125'
(38m)
1/2" 454 312 250 214 190 172 158 147 138 131 116
3/4" 949 652 524 448 397 360 331 308 289 273 242
1" 1,787 1,228 986 844 748 678 624 580 544 514 456
1
1/4"
3,669 2,522 2,025 1,733 1,536 1,392 1,280 1,191 1,118 1,056 936
1
1/2"
5,497 3,778 3,034 2,597 2,302 2,085 1,919 1,785 1,675 1,582 1,402
2" 10,588 7,277 5,844 5,001 4,433 4,016 3,695 3,437 3,225 3,046 2,700
2
1/2"
16,875 11,598 9,314 7,971 7,065 6,401 5,889 5,479 5,140 4,856 4,303
3" 29,832 20,503 16,465 14,092 12,489 11,316 10,411 9,685 9,087 8,584 7,608
4" 43,678 30,020 24,107 20,632 18,286 16,569 15,243 14,181 13,305 12,568 11,139
Maximum Liquefied Propane Delivery Capacity
in Thousands of BTU/H (0.5” WC Pressure Drop)
Pipe
Size
Length (including fittings)
10'
(3m) 20'
(6m) 30'
(9m) 40'
(12m) 50'
(15m) 60'
(18m) 80'
(24m) 100'
(30m) 125'
(38m) 150'
(45m) 175'
(53m) 200'
(60m) 250'
(76m)
1/2" 291 200 160 137 122 110 101 94 89 84 74 67 62
3/4" 608 418 336 287 255 231 212 197 185 175 155 140 129
1" 1,150 787 632 541 480 434 400 372 349 330 292 265 243
1 1/4" 2,350 1,620 1,300 1,110 985 892 821 763 716 677 600 543 500
1 1/2" 3,520 2,420 1,940 1,660 1,480 1,340 1,230 1,140 1,070 1,010 899 814 749
2" 6,790 4,660 3,750 3,210 2,840 2,570 2,370 2,200 2,070 1,950 1,730 1,570 1,440
NOTE

For installations using CSST (flexible) gas piping, please refer to the sizing charts provided by the manufacturer.
 The use of single-stage regulators are recommended. Dual-stage regulators could cause operational issues with the boiler.