Technical manual
SOLAR
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| Integrated roof kit | Integrated roof kit | ||
| without flashings fitted |
| with flashings fitted |
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Figure 18 – Dimplex SOLC220 integrated roof kit without and with flashing kit fitted
Free standing kits
The free standing kit is designed for the vertical installation of the solar collector on even ground with a slope of 45° to 60°. For lower sloping angles shorted support struts can be ordered, allowing the collector to slope between 30° and 40°.
As shown in Figure 24, the free standing mounting kit is usually fixed at 4 individual points. Alternatively a U – section rail is available as accessory aiding on uneven ground or for suspended installation.
When more than one row of solar collectors is being installed it is important to minimise the impact of shading of one row to the other. Equation 2 can be used to calculate the optimum row spacing to avoid shading at solar noon on the least favourable day of the year, i.e. 21st December.
p _ c = | 1870mm ⋅ sin(180° − (β + α s )) | [2] | ||
| sinα s |
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Where: p_c | [mm] | pitch between collector rows | ||
| β | [°] |
| sloping angle of solar collector |
| αs | [°] |
| solar altitude angle |
The solar altitude angle can be calculated applying Equation 3 or approximating it from Figure 19.
α s = 90° − (cosφ ⋅ cos 23.45° + sin φ ⋅ sin 23.45°) | [3] | |||
Where: | αs | [°] | solar altitude angle |
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| φ | [°] | latitude of installation |
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Page 19 of 72
ST0133 – A 02/09
