Navien NFC-175, Service Manual

Page: 24 / 138

24 NFC Service Manual
Version 1.0
Maximum Liquefied Propane Delivery Capacity
In Thousands of BTU/H (0.5 in WC pressure drop)
Pipe Size
Length (including fittings)
10 ft
(3 m)
20 ft
(6 m)
30 ft
(9 m)
40 ft
(12 m)
50 ft
(15 m)
60 ft
(18 m)
80 ft
(24 m)
100 ft
(30 m)
125 ft
(38 m)
150 ft
(45 m)
175 ft
(53 m)
200 ft
(60 m)
250 ft
(76 m)
1 /
2
in 291 200 160 137 122 110 101 94 89 84 74 67 62
3
/
4
in 608 418 336 287 255 231 212 197 185 175 155 140 129
1 in 1,150 787 632 541 480 434 400 372 349 330 292 265 243
1
1
/
4
in 2,350 1,620 1,300 1,110 985 892 821 763 716 677 600 543 500
1
1
/
2
in 3,520 2,420 1,940 1,660 1,480 1,340 1,230 1,140 1,070 1,010 899 814 749
2 in 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