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GAS PIPING
Gas piping should be sized, installed, and tested only by a licensed
professional! Improper installation can result in improper equipment
performance or a hazardous situation.
1.
Check the fuel gas type before installation. DO NOT connect a unit if the gas type is not
compatible. Contact your dealer for the proper unit to match the gas type.
2.
Check the gas inlet pressure immediately upstream at a location provided by the gas company.
Ensure the gas pressure is within the limits shown in the Specifications section.
3.
Review the installation location taking into account all gas users on site. Calculate the gas
piping that will be required to service the installation. The gas supply line shall be sized and
installed to provide a supply of gas sufficient to meet the maximum demand of the heater and
all other gas consuming appliances at the location.
Note:
Reference the
National Fuel Gas Code, NFPA 54
,
for proper line sizing.
4.
Ensure any compound used on the threaded joints of the gas piping is compatible with
LPG/Propane.
5.
Use only approved materials to connect the unit to the gas line.
6.
Install a manual gas valve in the gas supply line to the water heater. For best performance the
water heater should be the first user downstream from the gas supply meter. A union can be
used on the heater sized of the valve to allow for future servicing or disconnection of the unit.
7.
Manufacturer recommends installation of gas pressure regulator (ex. Maxitrol 325-5A or
equivalent) on gas line to ensure gas pressure is at optimum level for proper unit operation.
8.
Purge the gas line of any debris and liquid before connection to the water heater. (Do we need
to say more about the right way to do this?)
9.
Connect to the water heater.
10.
Leak check all joints including the heater for gas tightness. Use a leak detection solution, soap
and water, or an equivalent nonflammable solution, as applicable.
Ensure any leak check solution is non-corrosive and is completely rinsed
from the piping after leak check is complete. Corrosion of the gas piping
and subsequent leaks could occur.
Never use flammable solutions or an open flame to test for gas leaks!
Summary of Contents for AHG-T42-LP
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