Gas Supply; The Gas Supplier - Power Flex Power VentedGas Water Heater Manual

GAS SUPPLY

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
This gas piping must be installed according to all local and
state codes or, in the absence of local and state codes,
the "National Fuel Gas Code", ANSI Z223.1(NFPA 54)-lat-
est edition. Canadian installations must be performed in
accordance with CAN/CGA-B149.
Tables 1 and 2 on page 7 are provided as a sizing refer-
ence for commonly used gas pipe materials. Consult the
"National Fuel Gas Code" for the recommended gas pipe
size of other materials.
Refer to Figure 2
Note: When installing gas piping, apply approved pipe
joint compound.
1. Install a readily accessible manual shut-off 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 three 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 shut-off valve. This is to
allow easy removal of the gas valve/thermostat.
4. Turn the gas supply on and check for leaks. Use a
chloride-free soap and water solution (bubbles forming
indicate a leak) or other approved method.
6
FIGURE 2
Gas Piping
Manual gas
shut-off valve
Install a readily acces-
sible manual shut-off
valve in the gas supply
line as recommended
by the local utility.
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 pur-
pose of input adjustment.
Gas Pressure Testing
Important: This water heater and its gas connection must
be leak tested before placing the appliance in operation.
• If the code requires the gas lines to be tested at a
pressure exceeding 14" W.C., the water heater and
its manual shut-off valve must be disconnected from
the gas supply piping system and the line capped.
• If the gas lines are to be tested at a pressure less
than 14" W.C., the water heater must be isolated
from the gas supply piping system by closing its
manual shut-off valve.
U.L. recognized fuel gas and carbon monoxide (CO) detec-
tors are recommended in all applications and should be
installed using the manufacturer's instructions and local
codes, rules, or regulations.
Note: Air may be present in the gas lines and could
prevent the pilot from lighting on initial start-up. The gas
lines should be purged of air by a qualified service
technician after installation of the gas piping system.
L.P. Gas