Installation manual

ENGLISH
Conergy AS
Owners Manual
13
4 Important Installation Notes
4.1
4.2
Do not commence an installation until you have satisfied yourself that all safety issues associated
with working on and lifting components onto a roof have been addressed. All work associated with
the installation must comply with local authority regulations including AS/NZS 3500.4.2, where these
installation instructions and local regulations are in conflict, local regulations must prevail.
Roof location selection
There are six major factors to consider when selecting the solar water heater installation location;
1.
2.
3.
4.
5.
6.
Supplementary heat sources
If a supplementary heat source is connected to the storage tank, the maximum energy input can be
no more that 10 kW, including the electrical element. Where greater input is required, a pressure and
temperature relief valve with a higher kW rating shall be fitted to the storage tank.
Any supplementary heat source must be limited such that the maximum tank temperature is 80°C.
For the interconnecting details e.g. pipe work, of your specific model/configurations, please check
the assembly drawings in the following pages.
4 Important Installation Notes
For optimum performance the solar collectors need to face the equator (in Southern hemisphere
this is north and in the Northern hemisphere this is South). Installations on angles of up to 45°
away from the equator do not have a major effect on the annual solar output. Consequently, roof
locations which face less than 45° away from the equator are acceptable. If the collectors are
installed with an east facing bias then the best solar input is achieved in the morning. If there is a
west facing bias the best solar input is in the afternoon.
Careful site inspection is required to ensure the selected location is not subjected to shading
from adjacent trees or buildings throughout the day, but particularly between 9am and 3pm - the
highest solar input times. Shadows are longer in winter than in summer, so a site that is free of
shadows from adjacent objects in summer may have some shadows in winter.
The storage tank should be located as close as possible to the location which uses the most hot
water, usually the bathroom or kitchen. This is to reduce energy losses which may occur if the pipe
work between the solar water heater and the point of use is too long.
The collectors should be located as close as possible to the storage tank location. This is to
reduce energy losses due to long pipe work between the collectors and storage tank. For optimum
performance the collectors should be no more than 20 m of pipe run from the tank. (40m total
- send and return).
To achieve optimum performance the collectors should be installed on a roof pitch of greater than
8° and less than 30°. If the roof pitch is less than 8°, the system will require a mounting frame to
increase the pitch. Installations below 8° do not circulate effectively and the collector glass will
not self clean during rainy periods.
The roof system must be carefully inspected to ensure it can support the systems weight once it
is filled with water. If the roof cannot support the load, additional bracing must be installed before
the solar water heater is installed.