Gravikol™ gravity flat collector system for 4-6 people: 2 flat collectors + 200 liter horizontal heat exchanger boiler

Solar collector system

This system does not require a pump, expansion tank, control, BUT: the hot water storage boiler must be located inside the house, higher than the collector.

This can typically be realized in a house with a tent roof, where the collector must be installed close to the eaves and the tank high in the attic.
The other option is mounting it on the side wall of the house.
Simple, great and e also works for line writers!

The assembly does not include the heat transfer fluid, which can be an antifreeze mixture, or even better alcohol (e.g. denatured alcohol), the frame and the roof hook, or the pipeline.

More: www.napcsap.hu

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Gravikol™

With the solar collector package included in the offer, the hot water needs of 3-5 people can be met.

This is our package of 2 2 m2 Italian manufactured with flat collector,200 liter 1 heat exchanger Drazice supplied with horizontal hot water tank.

This system does not require a pump, expansion tank, control, BUT!
The tank must be located inside the roof, above the height of the collector, so that the hot water can travel from the solar collector to the boiler by gravity.
Warm water is lighter than cold, so the heat will automatically flow from the top of the collector to the boiler, and the colder, heavier water will automatically flow back from the boiler to the bottom of the collector.
There is no need to worry about the water in the boiler overheating, the liquid in the collector will turn into steam sooner and thus the gravitational flow.

If the standing boiler fits, ask for it, it's cheaper!

This system can also be made at home, but the soul of piping, the Gravikol™ solar collector charging and balancing unit, can be found among our products, but feel free to copy it!
The charging unit is NOT included in the system!

Orientation of the solar collectors:
The ideal orientation: south 40-45° - so you can use your solar collector system evenly throughout the year.
In summer, the sun is higher, in case of intensive summer use, the solar collector is flatter, It is recommended to place it at an angle of 25-30°, e.g. at holiday homes.
In winter, the sun is lower, so most of the sun hits the solar collectors at the steeper, 55-60° angle of inclination, then in winter heating is optimal.
In other words, if you want to use the system effectively even in winter, it is better to use it at a steep angle install, you will still have hot water in the summer.