American Water Heater 6510238 - Manual (Page 7)

7
Manual gas
shutoff valve
Ground joint
union
3 In. Min.
Check with
local utility
for min. height
Drip leg
Figure 6: Gas Piping
Gas Pressure
Important: The gas supply pressure must not exceed the
maximum supply pressure as stated on the water heater’s
data plate. The minimum supply pressure is for the purpose
of input adjustment.
Gas Requirements
Read the data plate to be sure the water heater is made
for the type of gas you will be using in your home. This
information will be found on the data plate located near the
gas control valve. If the information does not agree with the
type of gas available, do not install or light. Call your dealer.
Note: An odorant is added by the gas supplier to the gas
used by this water heater. This odorant may fade over an
extended period of time. Do not depend upon this odorant
as an indication of leaking gas.
Gas Piping
The gas piping must be installed according to all local and
state codes or, in absence of local and state codes, the
”National Fuel Gas Code”, ANSI Z223.1 (NFPA 54)-latest
edition.
Tables 1 and 2 on page 8 are provided as a sizing reference
for commonly used gas pipe materials. Consult the “National
Fuel Gas Code” for the recommended gas pipe size of other
materials.
Refer To Figure 6
1.
Install a readily accessible manual shutoff valve
in the gas supply line as recommended by the
local utility. Know the location of this valve and
how to turn off the gas to this unit.
2. Install a drip leg (if not already incorporated as
part of the water heater) as shown. The drip leg
must be no less than 3 inches long for the
accumulation of dirt, foreign material and water
droplets.
3. Install a ground joint union between the gas
valve/thermostat and the manual shutoff valve.
This is to allow easy removal of the gas valve/
thermostat.
Explosion Hazard
Use a new AGA or CSA approved gas
supply line.
Install a shut-off valve.
Do not connect a natural gas water heater
to a L.P. Gas Supply.
Do not connect a L.P. gas water heater to
a natural gas supply.
Failure to follow these instructions can
result in death, explosion, or carbon
monoxide poisoning.