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Installation (Water Connections) continued-
Hydrogen gas can be produced in an operating water heater that has not had
water drawn from the tank for a long period of time (generally two weeks or
more). HYDROGEN GAS IS EXTREMELY FLAMMABLE. To prevent the
possibility of injury under these conditions, we recommend the hot water faucet
to be open for several minutes at the kitchen sink before you use any electrical
appliance, which is connected to the hot water system. If hydrogen is present,
there will be an unusual sound such as air escaping through the pipes as hot
water begins to flow. DO NOT smoke or have open flame near the faucet at the
time it is open.
This water heater can deliver scalding temperature water at any faucet in the
system. Be careful whenever using hot water to avoid scalding injury. Certain
appliances such as dishwashers and automatic clothes washers may require
increased temperature water. By setting the thermostat on this water heater to
obtain the increased temperature water required by these appliances, the potential
for scald injury increases. To protect against injury, you should install an ASSE
approved mixing valve in the water system. This valve will reduce point of
discharge temperature by mixing cold and hot water in branch supply lines. Such
valves are available from the manufacturer of this water heater or a local plumbing
supplier. Please consult with a plumbing professional.
APPROXIMATE
TIME/TEMPERATURE
RELATIONSHIPS IN SCALDS
120°F (49°C)
125°F (52°C)
130°F (54°C)
135°F (57°C)
140°F (60°C)
145°F (63°C)
150°F (66°C)
155°F (68°C)
Gas Connections
The gas supply lines must meet all requirements of the National Fuel Gas Code
(ANSI Z223.1-Latest Edition), or in Canada CAN/CGA B149.1 Natural Gas
Installation Code (Latest Edition) or CAN/CGA B149.2 Propane Installation Code
(Latest Edition).
The minimum permissible gas supply pressure for the purpose of input adjustment
is 1 in (0.25 kPa) water column above the operating manifold pressure. See the
rating plate and gas valve for the manifold pressure and gas type. The maximum
permissible gas supply pressure is 14 in (3.5 kPa) water column for natural gas
and liquefied petroleum gases/propane gas.
More than 5
minutes
1½ to 2 minutes
About 30 seconds
About 10 seconds
Less than 5
seconds
Less than 3
seconds
About 1½ seconds
About 1 second
WARNING
13
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