State GS6 65 XRRT - Manual (Page 12)

A gas line of sufficient size must be run to the water heater.
Consult the current edition of National Fuel Gas Code ANSI
Z223.1, also referred to as NFPA 54 and the gas company con-
cerning pipe size.
There must be:
– A readily accessible manual shut off valve in the gas supply
line serving the water heater, and
– A drip leg (sediment trap) ahead of the gas control valve to
help prevent dirt and foreign materials from entering the gas
control valve.
– A flexible gas connector or a ground joint union between the
shutoff valve and control valve to permit servicing of the unit.
Be sure to check all the gas piping for leaks before lighting the
water heater. Use a soapy water solution, not a match or open
flame. Rinse off soapy solution and wipe dry.
When installed at elevations above 2,000 feet, input rating should
be reduced at the rate of 4 percent for each 1,000 feet above sea
level which requires replacement of the burner orifice in accor-
dance with the National Fuel Gas Code ANSI Z223.1 / NFPA 54.
Contact your local gas utility for further information.
Connecting the gas piping to the gas control valve of the
water heater can be accomplished by either of the two
methods shown.
Installing the New Water Heater (cont’d)
Gas Piping
Venting (cont’d)
12
GAS PIPING WITH FLEXIBLE CONNECTOR
GAS PIPING WITH ALL BLACK IRON
PIPE TO GAS CONTROL
GROUND JOINT
UNION(Optional)
3 ″ min.
LOOP
GAS
CONTROL
VALVE
DRIP LEG
(Sediment trap)
CAP
3 ″ min.
GROUND JOINT
UNION(Optional)
GAS
CONTROL
VALVE
BLACK PIPE
DRIP LEG
(Sediment trap)
CAP
WARNING
Be sure vent pipe is properly connected to prevent escape of
dangerous flue gases which could cause deadly asphyxiation.
WARNING
Chemical vapor corrosion of the flue and vent system may
occur if air for combustion contains certain chemical vapors.
Spray can propellants, cleaning solvents, refrigerator and air
conditioner refrigerants, swimming pool chemicals, calcium
and sodium chloride, waxes, bleach and process chemicals
are typical compounds which are potentially corrosive.
WARNING
Make sure the gas supplied is the same type listed on the model
rating plate. The inlet gas pressure must not exceed 10.5 in.
water column (2.6kPa) for natural gas or 13 in. water column
(3.2kPa) for propane (L.P.) gas. The minimum inlet gas pressure
listed on the rating plate is for the purpose of input adjustment.
WARNING
The appliance and its individual shutoff valve must be discon-
nected 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 (3.5kPa).
The appliance must be isolated from the gas supply piping sys-
tem by closing its individual manual shutoff valve during any
pressure testing of the gas supply piping system at test pres-
sures equal to or less than 1 ⁄
2
pound per square inch (3.5kPa).
WARNING
Use pipe joint compound or teflon tape marked as being
resistant to the action of petroleum [Propane (L.P.)] gases.
WARNING
If the gas control valve is subjected to pressures exceeding 1 ⁄
2
pound per square inch (3.5kPa), the damage to the gas con-
trol valve could result in a fire or explosion from leaking gas.
WARNING
If the main gas line shutoff serving all gas appliances is used,
also turn “OFF” the gas at each appliance. Leave all gas appli-
ances shut off until the water heater installation is complete.
WARNING
The appliance and its gas connection must be leak test-
ed before placing the appliance in operation.
WARNING
Failure to replace the standard orifice with a high altitude ori-
fice when installed at elevations above 2,000 feet, could result
in improper and inefficient operation of the appliance, produc-
ing carbon monoxide gas in excess of safe limits, which could
result in serious injury or death. Contact your gas supplier for
any specific changes which may be required in your area.