Title: 315.022 OSO-NANO-N-MANUAL-NO-SE-FI-EN-146007-05.pdf
E) Bring the heater to a drain, sink or other suit- able place and empty the tank by turning the pipe connections upside down. Remember that both the water and the product may be very hot.When the heater is to be put into operationagain, it must be filled with water and the tank vented by opening a hot water tap to the maxi- mum pressure until the water flows in an even stream. The power supply must not be switched on until this is done. Check that the pipe connec- tions for CW and HW are still tight after 3-4 hours of operation.4.5 Handover to end-userTHE INSTALLER MUST:Brief the end-user on safety and maintenance instructions. Brief the end-user on settings and emptying the product. Hand this installation manual over to the end- user. Enter contact details on the type plate on the product.5. USER GUIDE