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Solar Heaters

Wunder ANSG

Selective-coated flat plate collector, Solar Keymark certified

Models1808 · 2108 · 2510
AbsorberSelective coating, α 95 %
Efficiency (Aa)77 %
CertificationSolar Keymark

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Overview

Wunder ANSG sits between the ANP and ALS grades: it pairs a selective-coated aluminium absorber with normal-iron tempered glass, delivering most of the yield of the premium range at a more accessible price. The Almeco-Tinox type selective coating provides 95% absorptance with only 4% emittance, so the plate keeps absorbing solar gain instead of radiating it back out. Three sizes are offered: ANSG 1808, 2108 and 2510.

Thermal efficiency is 70% referred to gross area and 77% referred to absorber area. Gross areas are 1.79, 2.07 and 2.42 m², with absorber areas of 1.65, 1.93 and 2.27 m², empty weights of 24, 27 and 32 kg and absorber volumes of 1.0 to 1.3 litres. Eight to ten laser-welded copper risers of 8 mm feed an 18 mm manifold terminated in 3/4" unions.

A 50 mm glass wool blanket at 50 kg/m³ limits rear losses, 3.2 mm tempered glass protects the absorber, and the reinforced aluminium case with EPDM seals and couplings is built for UV exposure, wind load and thermal shock. Every model handles 10 bar and 130 °C at a 72 kg/h·m² design flow. ANSG is Solar Keymark certified under registration 011-7S2322 F and carries a ten-year warranty.

Key features

  • Selective-coated aluminium absorber, 95% absorptance and 4% emittance
  • Thermal efficiency 70% (gross area) / 77% (absorber area)
  • Laser-welded copper harp: 8 mm risers, 18 mm manifold, 3/4" connections
  • 3.2 mm tempered glass with reinforced aluminium frame and EPDM seals
  • 50 mm glass wool insulation at 50 kg/m³
  • 10 bar maximum working pressure, 130 °C maximum operating temperature
  • Solar Keymark certified (registration 011-7S2322 F), 10-year warranty
  • Three sizes: 1.79, 2.07 and 2.42 m² gross area

Applications

  • Residential solar domestic hot water
  • Hotels and apartment buildings
  • Commercial hot water systems
  • Industrial process pre-heating
  • Pitched roof, flat roof and ground-mounted arrays

Technical specifications

ParameterWunder ANSG 1808Wunder ANSG 2108Wunder ANSG 2510
Thermal efficiency Ag (%)707070
Thermal efficiency Aa (%)777777
Dimensions (mm)1927 × 927 × 901988 × 1041 × 901988 × 1218 × 90
Gross area (m²)1.792.072.42
Absorber area (m²)1.651.932.27
Weight empty (kg)242732
Absorber volume (L)11.151.3
Max working pressure (bar)101010
Max operating temp (°C)130130130
Flow rate (kg/h·m²)727272
Absorber plate materialSelective coating aluminumSelective coating aluminumSelective coating aluminum
Absorptance (%)959595
Emittance (%)444
Manifold pipe Ø (mm)181818
Absorber pipe Ø (mm)888
Connection3/4"3/4"3/4"
Number of pipes8910
Glass materialNormal iron tempered glassNormal iron tempered glassNormal iron tempered glass
Glass thickness (mm)3.23.23.2
Insulation materialGlass woolGlass woolGlass wool
Insulation thickness (mm)505050
Insulation density (kg/m³)505050

Values are taken from the manufacturer's current catalogue and may change without notice. Please request the latest datasheet before final design.

Certifications

  • Solar Keymark (registration No. 011-7S2322 F, DIN EN 12975:2022-06 / DIN EN ISO 9806:2018-04)

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