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62
INSTALLATION INSTRUCTIONS
Piping for Space Heaters
Local codes or plumbing authority requirements may
vary from the instructions or diagrams provided in this
manual and take precedence over these instructions�
Combination Potable and Space
Heating Application
DANGERS:
When this system requires water for space heating
at elevated temperatures (above 125°F [52°C]),
a mixing or tempering valve must be installed in
the hot water supply line to the house in order to
reduce the scald hazard potential.
• Any piping or components used in the
installation of this water heater in a
combination potable and space heating
application must be suitable for use with
drinking water.
• If this water heater is installed in an
application intended to supply domestic
hot water needs and hot water for space
heating purposes, do not connect the heater
to an existing heating unit or components
of a heating system that have previously
been used with a nondrinking water
system. Toxic chemicals such as those
used for boiler treatment may be present
and will contaminate the drinking water
supply causing possible health risks. Never
introduce toxic chemicals, such as those
used for boiler treatment, into this system.
• This water heater is not approved as the
dedicated space heating unit. This water
heater must be used for combination
applications with air handler only and not for
indoor heating applications.
Air Handler
Space Heater
Typical Combination Illustration
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