2-in-1 function

Thermal performance testing for solar air collector; Pressure drop test; Time constant test; Visual inspection; Internal pressuretest; Rupture or collapse test; Stagnation temperature; Exposure test; Externalthermal shock; Internal thermal shock; Rain penetration; Freeze resistance; Mechanical load; Impact resistance test using steel ball; Final inspection. All above listed tests of the standard EN12975-1:2006+A1:2010 and ISO 9806:2017 were passed successfully in accordance with the criteria.

The Solar Keymark is a voluntary third-party certification mark for solar thermal products, demonstrating to end-users that a product conforms to the relevant European standards and fulfills additional requirements. It is widely spread across the European market and beyond. The Solar Keymark is a quality label.

Standard function

Videos & Documents Download

Function introduction video

Installation video 

Operation video for LCD thermostat

Note:The correct clock must be set for the collector to work normally. To set the clock, press the SET and M buttons at the same time for more than 2 seconds. Other operations can be ignored.

Solar Air Heater Testing Video

Product guides and documents

Catalogue 2022

Nakoair® test report

Installation Manual of solar air heater 

Installation Manual in Japanese

LCD thermostat Instruction

LCD thermostat Instruction in Japanese

Roof mounting kits manual for OS40/42

The TUV Rheinland Group is a leading provider of technical services worldwide. Founded in 1872 and headquartered in Cologne, the Group employs 19,700 people. It generates annual revenues of EUR1.92 billion.

Download  TUV ISO9001

The Solar Keymark is a voluntary third-party certification mark for solar thermal products, demonstrating to end-users that a product conforms to the relevant European standards and fulfills additional requirements. The Solar Keymark was developed by the European Solar Thermal Industry Federation (ESTIF) and CEN (European Committee for Standardisation) in close co-operation with leading European test labs and with the support of the European Commission. It is widely spread across the European market and beyond. Note: The difference between the Solar Keymark and the CE-mark The Solar Keymark is a quality label and the CE-mark just attests that the product fulfills minimum legal requirements according to specific European directives.

Download  Solar Keymark certificate in German

Download  Solar Keymark certificate in English

TUV Thermal performance testing for solar air collector: Pressure drop test; Time constant test; Visual inspection; Internal pressure test; Rupture or collapse test; Stagnation temperature; Exposure test; External thermal shock; Internal thermal shock; Rain penetration; Freeze resistance; Mechanical load; Impact resistance test using steel ball; Final inspection. All above listed tests of the standard EN12975-1:2006+A1:2010 and ISO 9806:2017 were passed successfully in accordance with the criteria.

Download  TUV test report for OS22

Download  TUV test report for OS42

Download  CE certificate

Download  CE test report

Download  Rohs certificate

Download  Rohs test report