HTP PH130-80S - Potable Water Piping

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Solar Heat Exchanger to Solar Panel
• Anti-freeze (if required) is added and rated as non-toxic with copy of MSDS sheet for homeowner
• Solar heat exchanger completely purged of air
• Expansion tank and pressure temperature gauge operating properly
• Solar control shows circulators operating properly on the solar panels
Anti-Freeze Fluid
• Make sure freeze protection fluids are certified non-toxic
• Glycol percentage must be calculated per local area freeze level
• Provide glycol MSDS sheet to end user
B. POTABLE WATER PIPING
The design and installation of the solar water heating system should be done by qualified individuals. It is
important that good design and installation practice be followed to assure that your system will operate
properly. Failure to follow installation guidelines for you solar water heater system could cause
component failure and possible safety issues.
Many heat transfer fluids are classified as toxic. Do not introduce heat transfer fluids into any fittings on
the heater except those clearly marked for that purpose.
It is mandatory that all plumbing be done in accordance with all local and state codes or warranty will be
void. It is also necessary to use both thread tape and pipe dope on all mechanical connections. The
potable water piping is located on the side of your solar water heater and marked Hot and Cold. It is
recommended that unions or flexible copper connectors be used so heater can be easily serviced. Install
a shut-off valve on the cold feed near the solar water heater to isolate the tank for future service.
Provide clear access to the storage tank, pump, expansion tank, mixing valve, time clock and other key
components. The components on the potable side of the system may require future service or
maintenance, so it is recommended that the connections be made with brass unions. You must use
copper and brass fittings in plumbing the solar storage tank and expansion tank. The use of galvanized
fittings, nipples, dielectric unions, CPVC, PVC, or other plastic pipe is prohibited.
Hard copper connections to the city cold water supply line and home hot water feed lines are
recommended.
The gaskets in standard water heater flex hose connectors can become brittle and compressed over time
and begin leaking on the water heater. If not detected in a timely manner, a drip or leak may cause
serious damage to the tank’s electrical components, or, in extreme cases, cause the tank to leak from the
outside in.