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ALTERNATE SPACE HEATING WATER CONNECTIONS
DANGER
Toxic chemical, such as those used for boiler treatment, shall not be introduced into potable water used for space
heating.
This water heater shall not be connected to an existing heating system or component(s) previously used with a non-
potable water heating appliance.
All piping components connected to this water heater for space heating applications must be suitable for use with
potable water.
WARNING
When the system requires water for space heating at temperatures higher than required for other means, a tempering
valve shall be installed to temper the water for those uses in order to reduce the scald hazard potential.
Failure to properly pipe this water heater may result in improper operation and damage to the water heater or
structure.
Oxygen contamination of this water heater will cause corrosion of iron and steel components, and can lead to water
heater failure.
Connect the system supply and return piping to the water heater.
Refer to Figure 10 and Figure 11 for installation examples. Maintain a minimum ½” clearance from hot water
piping to combustible materials.
Figure 10. Alternate Space Heating Connections
INTERNET VERSION FOR REFERENCE ONLY