6 – Part 3: Solar water heater system installation
The Contractor shall obtain all required permits and approvals for installing the solar system. The installation shall conform to
all federal, state and local regulations governing solar water heating system installations. The contractor shall adhere to sound
building safety and trade practices. Special consideration must be given to building code requirements for the penetration
of structural members and fire rated assemblies. Before beginning with the installation, the contractor shall inspect the
condition of the roof and notify the homeowner of any existing roof damage or necessary repairs.
Installation check list
Collector location:
South facing within 45 degrees of due south
Roof pitch is between 15–60 degrees of horizontal
Collectors are located in an unshaded area
Collectors are located as close to tank as possible
Roof and roofing material are in good condition
Storage tank location:
Sufficient room to service water heater
Provisions made to protect area from water damage
Temperature and pressure relief valve properly installed
and discharge line runs to outdoors, or open drain
T&P discharge is not exposed to freezing temperatures
Tank and piping protected from freezing temperatures
Area free of flammable vapors
Potable water supply:
All related piping is free from leaks
Thermal expansion tank installed
Tank and piping properly purged of air
Anti-scald mixing valve set to 120°F
Systems with electric back-up solar tank:
Power supply voltage agrees with the water heater
rating plate
Branch circuit wiring and circuit breaker properly sized
Electrical connections tight and unit properly grounded
Systems with gas back-up solar tank:
Gas line properly sized and installed per code
Gas line and connections properly checked for leaks
Venting system properly sized and installed per code
Systems with boiler back-up solar tank:
Water heater sensor is secure in sensor well
Boiler back-up sensor is wired back to the boiler control
or relay center
Solar heat exchanger to solar panel:
Heat transfer fluid is added and copy of MSDS sheet is
left with manual for homeowner
Solar heat exchanger is completely purged of air
Expansion tank and pressure temperature gauge are
operating properly
Solar control shows circulators operating properly on
the solar loop system
Boiler heat exchanger; boiler back-up systems:
Heat exchanger is completely purged of air
Expansion tank and pressure temperature gauge are
operating properly
Boiler control is operating circulator for the boiler back-
up heat exchanger
Heat transfer fluid:
Make sure heat transfer fluids are as specified in
manual
Heat transfer fluid percentage must be calculated per
local area freeze level
Provide propylene glycol MSDS sheet to end user
Pump station / Controller:
Solar loop pressure set to 50 psi.
Air has been bled from circulating pump
Pressure relief valve is piped per local codes
Controller is set to “Automatic (Active)” Operation
Mode
Part 3: Solar water heater system installation
Содержание CLI U12 SD0W118 El B/U
Страница 53: ...Maintenance notes 53 Notes Maintenance notes...
