Takagi AT-KJr3U-IN Installation Manual And Owner's Manual page 8

• Installation and service must be performed by a qualified installer (for example,
a licensed plumber or gas fitter). Otherwise, the warranty will be void.
• The installer (licensed professional) is responsible for the correct installation of
WARNING
the water heater and for compliance with all national, state / provincial, and local
codes.
• The manufacturer does not recommend installing the water heater in a pit or
location where gas and water can accumulate.
• Do not have the vent terminal pointing toward any operating window, door, or
opening into a building.
• Do not install next to any source of airborne debris, such as a clothes dryer, that
can cause debris to be trapped inside the combustion chamber, unless the system
is direct-vented.
• The manufacturer does not suggest installing the water heater in an attic due to
safety issues. If you install the water heater in an attic:
• Make sure the unit will have enough combustion air and proper ventilation.
• Keep the area around the water heater and its termination clean. When dust
collects on the flame sensor, the water heater will shut down and produce an
error code.
• Place the unit for easy access for service and maintenance.
• A drain pan, or other means of protection against water damage, is
recommended to be installed under the water heater in case of leaks. The
manufacturer is not responsible for damage due to water leaks.
• The warranty will not cover damage caused by water quality.
• Only potable water can be used with this water heater. Do not introduce pool
or spa water, or any chemically treated water into the water heater.
• Water hardness levels must not exceed 7 grains per gallon (120 ppm) for
CAUTION
single family domestic applications or more than 4 grains per gallon (70 ppm)
for all other types of applications. Water hardness leads to scale formation
and may affect / damage the water heater. Hard water scaling must be
avoided or controlled by proper water treatment.
• Water pH levels must be between 6.5 and 8.5
• Well water must be treated.
• Do not install the unit where water, debris, or flammable vapors may get into the
flue terminal.
• The manufacturer recommends direct venting when the water heater is installed
in beauty salons, dry cleaners or any other locations in which such chemicals
are present in the air. Some chemicals used in beauty salons or dry cleaners may
affect the flame sensor. In such cases, the water heater may not work properly.
• Although the water heater is designed to operate with minimal sound, the
manufacturer does not recommend installing the unit on a wall adjacent to a
bedroom, or a room that is intended for quiet study or meditation, etc.
• Locate your heater close to a drain where water leakage will not do damage to
surrounding areas. As with any water heating appliance, the potential for leakage
at some time in the life of the product does exist. The manufacturer will not be
responsible for any water damage that may occur. If you install a drain pan under
the unit, ensure that it will not restrict the combustion air flow.
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Installation Manual
Installation