| Home > Solar Thermal Collectors > Tilt Kit(s) |
Solar tilt kits are optional, allowing collectors to tilt
between 18 and 60 degrees from the existing roof angle. Other angles
are available on request. Tilt kits are used when a better winter angle
is desired on a low pitch roof or to “re-orientate” panels to face
south by running the panels up and down an East or West facing roof.
Standard Tilt Kits
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| (3) 20-01 Collectors, Stacked Tilt, Comp Roof |
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(3) 20-01 Collectors, Stacked Tilt, Tile Roof |
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(2) 20-01 Collectors, Stacked, Flat Roof |
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"Sawtooth" Tilt Kits (Reorient collectors to face South)
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| (3) 20-01 Collectors, Sawtooth, Comp. Roof |
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| (2) 20-01 Collectors, Sawtooth, Comp. Roof |
Southern Orientation
Since the sun rises in the East,
crosses over the horizon on the South and sets in the West, you want
your collector to face as much to True South on your roof as possible.
This is especially true for space heating where you need to be within
15 degrees of True South. Click Here: Homepower true south article.
Up
to 45 degrees East or West of true South has very little effect on year
round domestic water heating. While less desirable, a West or even an
East facing water heating system can work well, especially with an
additional collector. Orientations over 45 degrees, such as a home with
a North-South ridgeline can tilt the collectors South with a
Click here to learn about optional tilt kits.
While
most collectors are mounted on the roof, many have been mounted on the
ground, or on an awning on the side of the house. Verticle mounting of
collectors on the South roof is great for space heating. Naturally, it
is important that there not be any shading where the collectors will go!
You Need a Good Collector Tilt
The
collector angle is known as "tilt." While a typical roof angle is 22 to
32 degrees, the tilt should be at least 15 degrees up from horizontal.
Additional tilt usually has little effect on total year-round
performance
unless you are in an area with very sunny winters like Colorado.
A tilt angle equal to latitude is considered ideal for space heating.
Because the winter sun is so low in the sky, great results have been
obtained by having collectors flush on a vertical wall for space
heating, which also prevents summer overheating.
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