Technical description

• Heat pipes with temperature limitation device 90°C (SUN 501) or 135°C (SUN 551).
• Coated aluminium box.
• Copper absorber plate with highly selective coating (absorption 95%, emissivity 5%) with adjustable orientation (+/-25°).
• 65mm glass tube with “plug and play” connection.
• Low-iron content soda lime glass has one of the highest transmission characteristics of any glass on the market today.
• One of the only vacuum tube collectors to have passed the optional Hail Impact Test which is covered under specification EN 12975.
• One of the best vacuum levels on the market, inferior to 1.10^-6 mbar, that provides an excellent thermal insulation.
• One of the largest getter surface area with defined length, assuring a vacuum integrity for many years to come.
• Patented hermetically fused glass-to-metal seal with design life superior to 30 year.
• Fully automated European manufacturing process, improving production quality.
• High quality flexible stainless steel neck relieves stress on the glass to metal seal.
• 22mm “plug-ang-play” fittings with double O-rings.
• Mechanical load up to 1,5 tonne (SUN 501.30).
• The longest warranty period on the market today.