Installation Manual for SB32-9PV and SB64-9PV
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Solar collectors absorb sunlight and convert it to heat.
•
When there is sufficient sunlight, the photovoltaic module pro-
duces electricity and turns the pump.
•
The pump circulates heat transfer fluid, (HTF), through the
solar collectors.
•
Heat is transferred to the HTF in
the solar collector.
•
The HTF is returned to the heat
exchanger in the Solar Boiler™
module.
•
The heat is transferred to the wa-
ter which circulates naturally to the
top of the solar storage tank.
•
Solar heated water is stored in the
solar storage tank until water is
drawn from the auxiliary tank (in
this case an electric water heater).
•
As hot water is drawn from the
electric water heater it is replaced
with solar heated water.
•
The electric heaters increase the
temperature of the solar heated
water, if necessary.
•
The electrical energy required
to heat water is significantly less
when water is preheated by the
solar water heater.
•
In this manner, the solar water heater saves electrical energy.
S32 A
Solar Collector
[Optional]
S32B
Solar Collector
PV module
Wire - supplies 12 VDC
from PV module to
Solar Boiler™
Cold Water IN
Hot Water OUT
Solar Storage Tank Auxiliary Water Heater
Solar Boiler™
module
Solar Pump™
Ball valve #1
Ball valve #3
Ball valve #2
Normal Operation
Ball valve #1 - Close
Ball valve #2 - Open
Ball valve #3 - Open
[Inside the Solar
Boiler™]
solar heated water IN
cold water IN
solar heated water IN
HTF [heat transfer fluid]
Domestic Water
How the Solar Boiler™ Works
NOTE:
The Solar Boiler™ is designed to shut off when a temperature of 70°C (158°F) is at-
tained in the solar storage tank.
The heat transfer fluid is a 40/60 % by volume mixture of Propylene Glycol USP and
distilled water. The Solar Boiler™ module contains 3.75 liters (1 US gallon) of heat
transfer fluid. An additional 3.75 liters (1 US gallon) is supplied with the system for
filling the system during start up.
The maximum safe working pressure of the heat transfer fluid is 60 psi, (410 kPa).
The Solar Boiler™ system is inherently grounded through copper piping connected
to the main water supply. Ensure that household ground is adequately electrically
grounded.
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