Solar Boiler™ Installation Manual (OG-300), page 2 of 14
IN.410.06.DEC/99
S32 A
Solar Collector
S32B
Solar Collector
[Optional]
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
South
A
B
Inclined mount
H
L
Flush mount
South
H/L
0.25
0.33
0.42
0.50
0.67
1.0
Angle
14°
18°
23°
27°
34°
45°
Rise/Run
3/12
4/12
5/12
6/12
8/12
12/12
Solar Collector Installation
Micro-Flo® solar collectors are designed to work with the Solar
Boiler™ module and other Micro-Flo® systems.
Locate the solar collectors on the roof of your home that is oriented true
south or as close as possible. There are no major losses up to 45
°
east or
west of true south. If your orientation is not in this range, consider a
ground mounting system. The solar collectors are to be installed such
that they are not shaded for for at least 5-6 hours during the middle of
the day.
The recommended slope is equal to the local latitude plus or minus 10
°
.
For example, Halifax, Nova Scotia is at a latitude of 45
°
. Therefore the
recommended collector slope for a home located in or near Halifax is
between 35
°
and 55
°
. For effective snow removal in the winter a slope
of at least 45
°
is recommended.
To calculate the slope of your roof, measure the dimensions “H” and
“L” as shown in the figure. Calculate the quantity H/L and compare it
to the table to determine if an inclined mount is required.
Inclined Mount
•
The inclined mounting kit allows the collectors to pivot in the
front and uses aluminum channel to support the solar collector at
the rear. Instructions are provided with the rack mount kit.
How the Solar Boiler™ works
•
Solar collectors absorb sunlight and convert it to heat.
•
When there is sufficient sunlight, the photovoltaic module produces
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 water 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.
NOTE:
The Solar Boiler™ is designed to shut off when a temperature
of 180
°
F is attained in the solar storage tank.
The HTF is a 40/60 % by volume mixture of Propylene Glycol
USP and distilled water, and will provide freeze protection to -
10
°
F (-24
°
C)