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Solar warm water generation, heating of swimming pools and / or support of central heating. Designed also for large commercial solar systems.
Compatible for on-roof installation, homogenous in-roof installation and for remote mounting on a flat roof or other area
VFK 145 and VFK 155 are available in horizontal and vertical installation versions, VFK 125 for vertical installation
For solar earnings even on cloudy days or days with low irradiation
Laser-welded aluminium-copper serpentine absorber ensures optimal heat transfer

For supply of domestic hot water
Tank volumes 150, 200 and 300 litres
No additional energy costs for the pump function, electrical back-up can be added to the system
Reduced maintenance costs
Corrosion protection

Efficient solar use with single flat or multi-family houses, ideal as heating centre in the attic
Gas and power savings by self-optimizing operation and high efficiency pump
Compact dimensions and appealing design in one device, together with low noise emission – suitable even for integration in living area
Energy-saving preparation of domestic hot water with high comfort thanks to big integrated shift-load cylinder
Ready for upgrading in combination with ventilation system or storages

Well-adjusted drainback and pressurized system for the generation of solar domestic hot water
Minimum planning effort required, useable for domestic and light commercial segments
Protected from stagnation and frost damage
Little effort needed for installation and maintenance effort
Ideal solution especially for areas with high solar radiation

Vacuum tube collector with 6 or 12 tubes (1 or 2m²)
For application in system for solar domestic hot water generation but also for solar-supported heating systems
Low weight and compact dimensions
Fast and safe installation on tilt or flat roof roofs, alongside each other or one above the other
Easy-to-replace tubes

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