142.9.1 Water SupplyIn the place where icemaker is installed, it may require an additional processing system toprevent formation of scale and removing impurities and chlorine for the water quality side.2.9.2 Water Supply LinePlease refer to the following instructions for installing water supply line.- Do not connect hot water system to the icemaker.- Appropriate water pressure is 30 ~ 100 psig( 206.8-689.4kPa).- Install shut-off valve to the water supply line.- Insulate the water supply line to prevent condensation.2.9.3 Drainage LineTo prevent backflow of icemaker and storage container, please refer to the followinginstructions for installing drainage line.- For the smooth drainage, gradient of 1 inch for every 3.3 feet(2.5cm per meter) is needed.- Do not install any trap.- Do not connect drainage pipe directly into the sewage pipe.- There must be minimum 2 inch (5cm) of air gap vertically between end of drainage pipe and the drain hole.- Must install vent.- Do not combine each drain line for the machine head and the ice storage bin.- The machine applies gravity drains and does not prevent counter-flow. If you want parts for preventing it,you should purchase it separately.2.9 Water Supply & Drain ConnectionsWARNING- Installation of water supply and pipe system has to be done in accordance to thelaw and regulation of the Country, State, and District.- The icemaker is to be installed with adequate backflow protection to comply withapplicable federal, state, and local codes.- Water pipe work has to be done by qualified service technicians.