4 | User safety instructionsInstaller and user reference guide18RWEYQ8~14T9Y1BVRV IV water-cooled system air conditioner4P452191-1B – 2020.10▪ Units are marked with the following symbol:This means that electrical and electronic products may NOT be mixed withunsorted household waste. Do NOT try to dismantle the system yourself: thedismantling of the system, treatment of the refrigerant, of oil and of other partsmust be done by an authorized installer and must comply with applicablelegislation.Units must be treated at a specialized treatment facility for reuse, recycling andrecovery. By ensuring this product is disposed of correctly, you will help toprevent potential negative consequences for the environment and humanhealth. For more information, contact your installer or local authority.▪ Batteries are marked with the following symbol:This means that the batteries may NOT be mixed with unsorted householdwaste. If a chemical symbol is printed beneath the symbol, this chemical symbolmeans that the battery contains a heavy metal above a certain concentration.Possible chemical symbols are: Pb: lead (>0.004%).Waste batteries must be treated at a specialized treatment facility for reuse. Byensuring waste batteries are disposed of correctly, you will help to preventpotential negative consequences for the environment and human health.4.2 Instructions for safe operationCAUTION▪ NEVER touch the internal parts of the controller.▪ Do NOT remove the front panel. Some parts inside aredangerous to touch and appliance problems mayhappen. For checking and adjusting the internal parts,contact your dealer.CAUTIONDo NOT operate the system when using a roomfumigation-type insecticide. Chemicals could collect in theunit, and endanger the health of people who arehypersensitive to chemicals.CAUTIONIt is unhealthy to expose your body to the air flow for along time.