A.O. Smith ATX-199 Instruction Manual page 39

INSTALLATION NOTES
1.
2.
3.
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.
Table 2 (page 10)
REGULATED GAS
SUPPLY LINE
MAIN GAS
SHUTOFF VALVE
TEE FITTING
SEDIMENT TRAP
PIPE CAP
Figure 44. Supply Gas Line Installation
GAS LINE SIZING
Z223.1/NFPA 54 in the USA or B149.1
•
•
•
•
type of gas.
Table 4 (page 13)
39
Figure 44.
ANSI
WARNING
Table 4 (page 13) for the