solar energy collectors for heating; solar heating installations; solar collectors (lighting); solar energy powered heating installations; solar heating panels; solar energy powered heating apparatus; solar thermal collectors for heating; thermal storage instruments (solar energy) for heating; solar thermal collectors (heating); solar heating apparatus; thermal storage apparatus (solar energy) for heating; solar panels for use in heating; solar powered ventilation apparatus; water heating installations; heating installations (water); hot water heating installations; heat exchangers for central heating purposes; chiller units being parts of water cooling installations; thermal fluid heaters; water heaters; industrial heating installations; coils (parts of distilling, heating or cooling installations)