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5
!
WARNINGS:
• The installation of gas piping must conform to
local utility company requirements and/or in the
absence of local codes, use the latest edition of
National Fuel Gas Code (NFGC), ANSI Z223.1/
NFPA 54, or CAN/CSA B149.1, Natural Gas and
Propane Installation Code.
• If inlet gas pressure is out of allowable range
[4.0” w.c. (1.0kPa) – 10.5” w.c. (2.6kPa)] for
Natural Gas, or [8.0” w.c. (2.0kPa) – 13.0” w.c.
(3.2kPa)] for LP gas, a gas pressure regulator
must be installed to maintain the allowable inlet
gas pressure.
• Should overheating occur or the gas supply fail
to shut off, turn off the manual gas control valve
to the water heater.
!
CAUTIONS:
• DO NOT attempt repair of electrical wiring, gas
piping, remote control, burners, vent connectors,
or other safety devices. Refer repairs to qualified
service personnel.
• Turn off the manual gas shut-off valve if the water
heater has been subjected to overheating, fire,
flood, physical damage, or if the gas supply fails
to shut off.
• DO NOT turn on the water heater unless the
water and gas supplies are completely opened.
NOTICE:
• The factory setting allows operating
temperatures between 100°F (38°C) and 120°F
(49°C). Temperatures of 85°F (29°C) and up to
140°F (60°C) can be achieved with the MAIN
(UMC-117) remote control. Temperatures of 85°F
(29°C) can be achieved with the Bath (USC-117 or
USC2-117) remote control. Only qualified service
personnel should perform this adjustment. Only
factory-authorized remote control(s) should be
used.
Natural Gas and Liquefied Petroleum Safety
!
DANGERS:
• Never attempt to convert the water heater from
natural gas to LP. The water heater should only
use the fuel type in accordance with listing on
data plate—natural gas for natural gas units and
LP for LP units. Any other fuel usage will result
in death or serious personal injury from fire and/
or explosion. This water heater is not certified
for any other fuel type.
• Both natural gas and propane (LP) have an
odorant added to aid in detecting a gas leak.
Some people may not physically be able to smell
or recognize this odorant. If you are unsure or
unfamiliar with the smell of natural gas or LP,
ask the gas supplier. Other conditions, such
as “odorant fade,” which causes the odorant
to diminish in intensity, can also hide or
camouflage a gas leak.
• Water heaters using LP gas are different from
natural gas models. A natural gas water heater
will not function safely on LP and vice versa.
• LP water heaters should not be installed below
grade (for example, in a basement) if such
installation is prohibited by federal, state, and/or
local laws, rules, regulations, or customs.
• LP must be used with great caution. It is heavier
than air and will collect first in lower areas,
making it hard to detect at nose level.
• Before attempting to light the water heater,
make sure to look and smell for gas leaks. Use
a soapy solution to check all gas fittings and
connections. Bubbling at a connection indicates
a leak that must be corrected. When smelling to
detect a gas leak, be sure to also sniff near the
floor.
• Gas detectors are recommended in LP and
natural gas applications and their installation
should be in accordance with the detector
manufacturer’s recommendations and/or local
laws, rules, regulations, or customs.
• Combustible materials, such as clothing,
cleaning materials, or flammable liquids, must
not be placed in the vicinity of the water heater.
• If a gas leak is present or suspected:
– DO NOT attempt to find the cause yourself.
– Never use an open flame to test for gas
leaks. The gas can ignite resulting in death,
personal injury, or property damage.
– Follow the steps listed under “What to Do If
You Smell Gas” found on the front cover of
this manual.
Safety
IMPORTANT SAFETY INFORMATION
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