Gravikol™ gravity solar collector system for 3-4 people: 1 extra large flat collector + support structure + 150 liter 1 heat exchanger boiler

Solar collector system

1 extra large Premium 2.5 m2 flat collector + the accompanying pitched roof mounting frame.
For flat roofs mounting frame can be ordered at extra cost.
Solar tank: 150 liter boiler, with 3 kW electric heating, with internal heat exchanger coil.
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 done 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 on the side wall of the house.
Simple, great and works for the writer of these lines too!

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

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Gravikol™

With the solar collector package included in the offer, the hot water needs of 3-4 people can be met.
This package includes 1 flat collector of 2.5 m2, with a support frame with a sloping roof, 150 liters, 1 supplied with a hot water tank (boiler) with a heat exchanger and electric heating.

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 reach the to get from the solar collector to the boiler.
Hot water is lighter than cold, so the heat flows from the upper part of the collector to the boiler flow towards it, and the colder, heavier water will automatically flow back from the boiler to the bottom of the collector. gravity flow ceases.

If the vertical boiler does not fit, look for horizontal heat exchanger tanks among our products!

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

The ideal orientation: 40-45° - so you can use it evenly throughout the year.
In summer, the sun is higher, in case of intensive summer use, it is recommended to place the solar collector flatter, at an angle of 25-30°, e.g. in holiday homes.
In winter, the sun is lower, so most of the sun hits the solar collectors at the steeper angle of inclination of 55-60°, then in winter the
In other words, if you want to use the system effectively in winter, it is better to install it at a steep angle, since you will still have hot water in the summer, but the boiler will not overheat either. water.