The solar thermal kit Hermann Saunier Duval HelioSet 3 to emptying DB are constituted by a series of places solar collectors on the roof, capable of absorbing the radiation from the sun to heat the heat transfer fluid.
Only when the temperature in solar collectors is higher than that present in the kettle, and the kettle has not reached its maximum temperature, then the heat transfer fluid in the solar collectors is pushed by the circulator present in the solar pump unit and transferred to the kettle FE S BM .
When the air circulator is not active in the solar circuit goes up to the collectors, emptying them completely. With this operation the components in the solar circuit are better protected from freezing and overheating created by the prolonged and high solar radiation.
The kettle FE S BM, place inside the building, stores the hot water to be used by the user when needed. The components in the system are:
- Collector SRD 2.3 V vertical plane, for overhead installation with gross area 2,51 sqm and 2,35 sqm net, absorber with selective treatment, hydraulic circuitry meander with 4 water connections with quick coupling, anodised aluminum frame with rear sheet of embossed aluminum protection. The fixtures available to allow you to install the SRD 2.3 V collectors on a flat roof or a pitched roof, thereby covering all types of cases.
- Kettle FE S1 150 BM 150 liters monoserpentino or kettles FE S2 BM 250/350 from 250/350 liter twin coil, all glazed and suitable for hot water up to a maximum temperature of 85 ° C. Water connections positioned in the upper part of the tank (ErP class B).
- Solar pump unit complete with control unit GHSD8 installable on the kettle. Ability to install a 2.5 kW electrical resistance in the solar circuit, which allows you to heat the domestic water storage tank with no risk of scale formation.
- Solar expansion tank and premixed antifreeze.