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Version 11.04
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e 2011 SUNF
LOWER SOLAR
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9
Installation angle
It is common for solar water heaters to be installed at an angle that is similar to the latitude of your location.
Installing it with a tilt angle
(as measured from horizontal) less than 20° is not recommended as the heat
pipes perform best in the range of 20-70 degrees. While adhering to this guideline, an angle of your latitude
+/-10° is acceptable, and will not greatly reduce the solar heater output.
Angles out of this range can also be used, but a decrease of heat output will result. When the
angle is lower
than the latitude, it will increase summer output, while a higher angle will enhance winter output.
10
Wind resistance and snow accumulation
When installing the solar water heater, please consider the issue of wind resistance and the resultant stress
on the fixed points. The standard frame is designed to withstand wind speeds of up to
100km/h (62 mph) and
30cm (about 11.8 inches) of snow accumulation without damage. For areas with the possibility for high winds,
additional reinforcement of attachment points
(e.g. into roof rafters, or ground anchors) may be required and
can easily be supplied by your local installers.
11
Maintenance Requirements
11.1 Cleaning
Regularly raining could keep the heat pipe vacuum tube clean, but if it is particularly dirty then it may need
to be cleaned with a soft cloth and warm, soapy water or other glass cleaning solutions. If the tubes are not
easily and safely accessible, a water spray from a garden hose may also be used.
11.2 Leaves
During autumn, leaves may accumulate between or under the tubes. Please remove these leaves regularly
to ensure optimal performance and to prevent any fire hazard. (The solar water heater will not cause the
ignition of flammable materials).
11.3 Broken Tube
If one heat pipe vacuum tube is broken, please don’t worry, the system will still work. You just need to
replace the broken tube. It is very easy.
Follow the instructions in step
5.3.2.
