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Breathing Hazard o Carbon Nono×id÷ Gas
, }lgh att;_e office rn}o_stbe in,stalled fat
oper_or_ _ove 2,000 feet (610 m).
* Corltsct a qualified i_'stalle_ or serwoe
agelncy
Breathing carbo_ mese;<de can cause b_'as dama_}e or
death Always _ead arid ar_deF'stardr_st_uction m_r_uai
Water heaters covered in this manual have been tested and
approved for installation at elevations up to 2,000 feet (610
m) above sea level. For installation above 2,000 feet (610 m),
the water heater's Btu input should be reduced at the rate of
4 percent for each 1,000 feet (305 m) above sea level which
requires replacement of the burner orifice in accordance with the
National Fuel Gas Code ANSI Z223.1/NFPA 54. Contact your
local gas supplier for further information.
Failure to replace the standard orifice with the proper high
altitude orifice when installed at elevations above 2,000 feet
(610 m) could result in improper and inefficient operation of the
appliance, producing carbon monoxide gas in excess of the safe
limits. This could result in serious injury or death. Contact your
local gas supplier for any specific changes that may be required
in your area.
Sediment Traps
Fire and Explosion Hazard
- Contaminants in gas lines can
cause fire or explosion.
• Clean ail gas piping before
installation.
- Install drip leg in accordance with
NFPA 54.
Contaminants in the gas lines may cause improper operation
of the gas control valve that may result in fire or explosion.
Before attaching the gas line be sure that all gas pipe is clean
on the inside. To trap any dirt or foreign material in the gas
supply line, a drip leg (sometimes called a sediment trap)
must be incorporated in the piping. The drip leg must be
readily accessible. Install in accordance with the Gas Piping
section. Refer to the current of the National Fuel Gas Code,
ANSI Z223.1tNFPA 54.
A sediment trap shall be installed as close to the inlet of the water
heater as practical at the time of water heater installation. The
sediment trap shall be either a tee fitting with a capped nipple
in the bottom outlet or other device recognized as an effective
sediment trap. If a tee fitting is used, it shall be installed in
conformance with one of the methods of installation, shown in
Figures 19 and 20.
Fire and Explosion Hazard
• Use joint compound or tape
compatiblewith propane.
Leak teat before operating
heater.
-Disconnect gas piping and
shut-off valve before pressure
testing system
GROUNDUNIONJOINT!_1
(OPTIONAL)
GAS CONTROL
VALVE
3" MIN. I DRIP LEG
(76.2 mm) SEDIMENT TRAP)
Use pipe joint compound or Teflon tape marked as being resistant
to the action of petroleum (Propane [L.P.]) gases.
The appliance and its gas connection must be leak tested before
placing the appliance in operation.
The appliance and its individual shutoff valve shall be
disconnected from the gas supply piping system during any
pressure testing of that system at test pressures in excess of
1/2 pound per square inch (3.5 kPa). It shall be isolated from
the gas supply piping system by closing its individual manual
shutoff valve during any pressure testing of the gas supply piping
system at test pressures equal to or less than 1/2 pound per
square inch (3.5 kPa).
Connecting the gas piping to the gas control valve of the water
heater can be accomplished by either of the two methods shown
in Figures 19 and 20.
®
TEFLON is a registeredtrademarkof E.I.Du PontDe Nemours andCompany.
FIGURE 19, GAS PIPING WITH FLEXIBLE CONNECTOR.
GROUND(OPTIONAL)UNIONJOINT _! _
BLACK PIPE GAS CONTROL
VALVE
3' MtN. I
(76.2 mm) SEDIMENT TRAP)
FIGURE 20. GAS PiPiNG WITH ALL
SLACK IRON PiPE TO GAS CONTROL.
17
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