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SUPPLY GAS LINE INSTALLATION
Fire and Explosion Hazard
Do not use water heater with any gas
other than the gas shown on the rating
label.
Excessive gas pressure to gas valve can
cause serious injury or death.
Turn off gas lines during installation.
Contact a qualified installer or service
agency for installation and service.
rating label.
REGULATED GAS
SUPPLY LINE
MAIN GAS
SHUTOFF VALVE
TEE FITTING
SEDIMENT TRAP
(DIRT LEG)
PIPE CAP
Figure 52
GAS LINE SIZING
DO NOT
SUPPLY GAS LINE SIZING U. S. UNITS
TABLE 8
LENGTH
IN
INPUT IN THOUSANDS BTU/HR
10
1400
2100
20
950
1460
30
770
1180
40
660
990
50
580
900
60
530
810
70
490
750
80
460
690
90
430
650
100
400
620
125
360
550
150
325
500
175
300
460
200
N/A
430
SUPPLY GAS LINE SIZING METRIC UNITS
TABLE 9
LENGTH
IN
METERS
3.0
410
615
6.1
278
428
9.1
225
346
12.2
193
290
15.2
170
264
18.3
155
237
21.3
143
220
24.4
135
202
27.4
126
190
30.5
117
182
38.1
105
161
45.7
95
146
53.3
88
135
61.0
N/A
126
37
3960
6300
11000
23000
2750
4360
7700
15800
2200
3520
6250
12800
1900
3000
5300
10900
1680
2650
4750
9700
1520
2400
4300
8800
1400
2250
3900
8100
1300
2050
3700
7500
1220
1950
3450
7200
1150
1850
3250
6700
1020
1650
2950
6000
950
1500
2650
5500
850
1370
2450
5000
800
1280
2280
4600
INPUT IN kW
1160
1845
3221
6735
805
1277
2255
4626
644
1031
1830
3748
556
878
1552
3192
492
776
1391
2840
445
703
1259
2577
410
659
1142
2372
381
600
1083
2196
357
571
1010
2108
337
542
952
1962
299
483
864
1757
278
439
776
1610
249
401
717
1464
234
375
688
1347
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