39
SUPPLY GAS LINE INSTALLATION
Fire and Explosion Hazard
Turn off gas lines during installation.
Contact a qualified installer or service
agency for installation and service.
Excessive gas pressure to gas valve can
cause serious injury or death.
Do not use water heater with any gas
other than the gas shown on the rating
label.
REGULATED GAS
SUPPLY LINE
MAIN GAS
SHUTOFF VALVE
TEE FITTING
PIPE CAP
SEDIMENT TRAP
Figure 52
GAS LINE SIZING
SUPPLY GAS LINE SIZING U. S. UNITS
TABLE 8
LENGTH
IN
10 175 360 680 1400 2100 3960
20 120 250 485 950 1460 2750
30 97 200 375 770 1180 2200
40 82 170 320 660 990 1900
50 73 151 285 580 900 1680
60 66 138 260 530 810 1520
70 61 125 240 490 750 1400
80 57 118 220 460 690 1300
90 53 110 205 430 650 1220
100 50 103 195 400 620 1150
125 44 93 175 360 550 1020
150 40 84 160 325 500 950
175 37 77 145 300 460 850
200 35 72 135 280 430 800
SUPPLY GAS LINE SIZING METRIC UNITS
TABLE 9
LENGTH
IN
METERS
INPUT IN kW
51 105 199 410 615 1160
35 73 142 278 428 805
28 59 110 225 346 644
24 50 94 193 290 556
21 44 83 170 264 492
19 40 76 155 237 445
18 37 70 143 220 410
17 35 64 135 202 381
16 32 60 126 190 357
15 30 57 117 182 337
13 27 51 105 161 299
12 25 47 95 146 278
11 23 42 88 135 249
10 21 40 82 126 234
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