Heat Transfer Phoenix, Installation & Operation Manual

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Installation Manual
PART 3: PHOENIX SOLAR WATER HEATER INSTALLATION
(CONT’D)
17. Solar Heat Exchanger
The Solar Heat Exchanger is designed to transfer heated energy rapidly from the solar collector into
the potable water. The Heat Exchanger has an integral finned tube design. The Heat Exchanger is
constructed in 90/10 copper nickel for superior corrosion resistance and long term reliability.
18. Hot Water Outlet
Each Phoenix Solar Water Heaters has a hot water dip tube outlet which draws water from the very
top of the heater. This helps to keep the heat trapped inside the highly insulated storage tank.
19. Temperature and Pressure Relief Valve
The Relief Valve must comply with standards for relief valves (ANSI Z21.22) by a nationally recog-
nized lab that maintains periodic inspections of production listed equipment. No valve of any type
should be installed between the relief valve and tank. Local codes govern installation of relief valves.
The outlet of the relief valve must be piped to suitable open drain so that the discharge water can-
not contact live electric parts to eliminate potential damage. Piping used should be approved for hot
water distribution. The relief valve discharge line must be no smaller than the outlet of the relief
valve and must be pitched downward from the valve to allow complete drainage of the relief valve
and discharge line. The end of the discharge piping should be not be threaded or concealed and
should be protected from freezing. No valve of any type, restriction or reducer coupling should be
installed in the discharge line.
20. Anti-Scald Mixing Valve
Automatically blends the hot water and the cold water feed line to control the discharge tempera-
ture to an acceptable and safe temperature. This will also increase the amount of hot water that is
drawn from the Phoenix Solar Water by not allowing the incoming water to fully temper the hot
water stored inside the tank.
21. Ball valve (for cold water shut off) (Valve #24)
The cold water shut off valve should be used in the event of an emergency shut down.
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CAUTION
It is very important that you do the potable piping before you pipe into your solar
system. Failure to do so may damage your water heater.