Title: 315.022 OSO-NANO-N-MANUAL-NO-SE-FI-EN-146007-05.pdf
The overflow from the safety valve must NOT be sealed or plugged. Any overflow pipe from the safety valve MUST be >1/2 mm inside, clear, undamaged and frost-free with a fall to the drain. Fixed electric fittings should be used for installation in new homes or when changing an existing electrical setup in accordance with regulations. The mains cable should withstand 90°C. A strain reliever must be fitted. The product should be filled with water before the power is switched on. The relevant regulations and standards, and this installation manual, must be followed.