Solar thermal energy

100% „Made in Germany“

All-year highly efficient high-vacuum tube collectors


FK251 Blue Line

Due to its hydraulic properties, the FK251 BlueLine can be integrated to the building in axial inclination of 15° - 75° (pitched roof, flat roof and free standing). The s-power flat plate collector FK251 BlueLine can be used for domestic hot water, pool heating and for space heating. The main component of the FK251 BlueLine is the highly selective vacuum coated aluminum absorber. It ensures a high absorption (~ 95.0%) of solar radiation and simultaneously has a low emission (~ 5%) of heat radiation.

A copper pipe harp is laser-welded onto the absorber. The to be heated heat carrier fluid flows through this pipe. The heat carrier fluid absorbs the heat from the absorber. The absorber unit (absorber and harp) is surrounded by a highly thermally-insulated sea-water resistant aluminum collector housing, which minimizes the heat losses from the collector. The collector is covered by a special Prismatic solar glass, which increases the performance of the collector through its prism effect (transmission> 90%).
Through an easy to install mounting system, the collector can be easily and quickly installed on the building. The collector connection kit with insulated compression fittings allows for quick and safe connection of the collectors. Each collector is equipped with a thermowell for the collector sensor in order to detect the collector temperature accurately.

> Download: Technical datasheet (english version, PDF-Format, 700 KB)

 

Product advantages:
• unique look due to wave-frame design in combination with solar prism glass
• highly selective coated aluminum absorber
• maximum heat transfer between the absorber and the copper grid by optimized laser welding technology
• ventilation system for fog-free operation
• intelligent ventilation system prevents the penetration of contaminants
• high precision as a result of a robot-controlled manufacturing production line
• long lifetime and environmental quality due to the use of recyclable materials
• easy transportation and installation on the roof due to the low total weight of only 38kg
• short installation time due to intelligent mounting design with slot-head screw-hammer system
• variable mounting options for nearly all roof types
• variable types of connection (up / diagonal)
• Solar Keymark certification
• 10 year warranty from date of manufacture

Here you can find all the components, data and article numbers of our direct flow  collector systems.
 
Underneath are detailled descriptions of our products. For further information you can contact our technicians: 0049 5931 88 0 88 98.

 

 

Art.-No.: 67 00 00

Aluminum flat plate collector FK251 BLue Line

High efficient flat plate collector with an unique optic of a wave-frame design and solar prism glass.

Application: solar domestic hot water, space heating, pool heating and furnace support

Mounting:

  • upright, on flat roof, (roof integration upon request)
  • Maximal power: 1,814 kW
  • Gross area: 2,51 m2
  • Absorber area: 2,31 m2
  • Height: 2150 mm, Width: 1170 mm, Depth: 83 mm
  • Weight: 38 kg
  • Connection: 22 mm

Flat roof mounting set for flat plate collector FK251 BlueLine

for a 45° elevated collector row on flat roofs

Package consists of:

  • Aluminum mounting bracket (45°)
  • Aluminum mounting rails and all mounting accessories necessary
  • (weighting not included)

    Art.-No.: 67 11 20 For 2 collectors
    Art.-No.: 67 11 30 For 3 collectors
    Art.-No.: 67 11 40 For 4 collectors
    Art.-No.: 67 11 50 For 5 collectors
    Art.-No.: 67 11 60 For 6 collectors

    Mounting set for flat plate collector FK251 Blue Line

    for a collector row on an inclined tile roof and plain tile roof.

    Package consist of:

    • Adjustable Aluminum-rafter roof bracket
    • aluminum-mounting rail and all mounting accessories necessary 

    Art.-No.: 67 12 20 For 2 flat plate collectors  
    Art.-No.: 67 12 30 For 3 flat plate collectors
    Art.-No.: 67 12 40 For 4 flat plate collectors 
    Art.-No.: 67 12 50 For 5 flat plate collectors
    Art.-No.: 67 12 60 For 6 flat plate collectors

    Mounting set for flat plate collector FK251 BlueLine

    for a collector row on inclined slate-, shingel-, metal-, and tin-roof.

    Package consists of:

    • Steal hanger bolts with seal
    • Aluminum-mounting rail and all accessories necessary 

    Art.-No.: 67 13 20 For 2 flat plate collectors 
    Art.-No.: 67 13 30 For 3 flat plate collectors
    Art.-No.: 67 13 40 For 4 flat plate collectors
    Art.-No.: 67 13 50 For 5 flat plate collectors
    Art.-No.: 67 13 60 For 6 flat plate collectors

    Collector connection set for flat plate collector FK251 BlueLine

    for one collector row.

    Package consists of:

    • Clamping ring gland 22mm
    • Clamping ring vent plug 22mm
    • Clamping ring plug 22mm
    • Insolation piece for clamping ring gland
    • 2 x Stainless steal well tubing 850mm KRV22 

    Art.-No.: 67 21 20 For 2 flat plate collectors  
    Art.-No.: 67 21 30 For 3 flat plate collectors
    Art.-No.: 67 21 40 For 4 flat plate collectors
    Art.-No.: 67 21 50 For 5 flat plate collectors
    Art.-No.: 67 21 60 For 6 flat plate collectors

    Extension set for flat plate collector FK251 BLue Line

    for double row collector mounting.

    Package consists of:

    • Clamping ring gland 22mm
    • Clamping ring vent plug 22mm
    • Clamping ring plug 22mm
    • Insolation piece for clamping ring gland 

    Art.-No.: 67 22 20 For 4 flat plate collectors (2 x 2)    
    Art.-No.: 67 22 30 For 6 flat plate collectors (2 x 3)    
    Art.-No.: 67 22 40 For 8 flat plate collectors (2 x 4)    
    Art.-No.: 67 22 50 For 10 flat plate collectors (2 x 5)    
    Art.-No.: 67 22 60 For 12 flat plate collectors (2 x 6)

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