11
Alpha SolarSmart 150 - General Information
3.6
SOLAR COLLECTOR INFORMATION - Fig. 7
The solar energy supplied by a system varies with the orientation and tilt of the collector, which will usually be
determined by the existing roof. However, the predicted variation is slight. For a collector facing anywhere between SE
and SW and tilted upto 60° from the horizontal, the annual solar energy supplied will be at least 90% of that obtained at
the optimum collector position (South at 30°).
It should be remembered that shading from trees, buildings etc., can produce a significant decrease in system
performance, and collectors should be positioned to minimise shading from the sun.
The solar collector can be installed using one of the following methods:
a.
Integration of the collector into the tiles of a pitched roof: Using the Alpha Flashing Kit (portrait or landscape),
landscape or portrait collectors can be integrated into the structure of a pitched roof as shown in Fig. 7. The roof must
have an inclination of more than 20° for portrait and 30° for landscape. The tiles used with the flashing kit must be
suitable to ensure that the installation is weatherproof. Full details of this type of installation are provided in the
instructions supplied with the kit.
b.
Positioning of a landscape collector onto a flat roof: Using the Alpha Flat Roof Kit (Part No. 6.4000800), the collector is
mounted on the framework supplied. The collector is fixed at an inclination of 30° and ballast is used to secure the frame
in the required position. Refer to Fig. 8 for details of location of the drain back unit in relation to the collector. Full details of
this type of installation are provided in the instructions supplied with the kit.
1.2 m
1.2 m
1.2 m
1.2 m
Max. 5 metres
X
DBU
2.5 m
2.5 m
DBU
Max. 5 metres
X
Collectors
Portrait
inclined
roof
Landscape
inclined
roof
Flat roof
2
X = 10m
X = 10m
X = 10m
3
X = 5m
X = 5m
X = 5m
4
X = 1m
X = 1m
X = 1m
Please note: All maximum distances X are under the
condition that the connecting pipework between the
individual collectors does not exceed the 5 metres !
Fig. 7
Fig. 8
Note: When fitted, the collector must be level
within 2 mm per metre.
A Preheated solar water to boiler
B Cold water inlet
C Warm solar heated water into the cylinder
D Cool water to DBU
Drain back unit
(DBU)
Roof
Max.
3m
Solar cylinder
Maximum of 4
collectors
Minimum decline of 40mm
per metre required
For latest prices and delivery to your door visit MyTub Ltd - www.mytub.co.uk - [email protected] 0844 556 1818
