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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
(Pump Included)
