2 Requirements for installation and notice*The location to install this equipment must have AC power, water inlet and water outlet connection,floor drain and sewage discharge outlet.* All water pipe and electric connections used are recommended to meet relevant national standard;.*Keep this equipment away from acidic substance or gas to avoid corrosion.*Please use AC 220V / 50Hz single-phase electric power rather than any other power supply. Thepower socket should be grounded and equipped with overload protection units (such as breaker orsafety fuse).*The equipment should be installed vertically, not upside-down or horizontally. And it should be kept inan upright position in transit. Do not allow it to be tilted while handling to avoid damages toequipment.*The recommended water incoming pressure is 172-862 kPa (25-125 psi). Booster bump orpressure-relief valve is to be installed either below or above this standard.*Make sure that the sewer drainage remains clear and that there is a distance between the drainagepipe and sewage water to prevent back flow of sewage water into the eqeuipment. Do not insertdrainage pipe into the sewage water. Size of floor drain pipe should not be less than DN40.*To avoid leakage in the system or pipeline over time, take cautious on the height and angle whenconnecting the pipes to avoid stress.* Take care when using pliers or pipe wrenches to tighten plastic fittings, as overtightening may causedamages to the threading.* Before connecting the inlet water pipe, clear any residual impurities and dirt in the pipeline first. Turnoff the main valve then connect the pipes to the equipment.* Recommended to install system indoor or under shelter.For outdoor installation, it is recommendedto build awning and take protective measures for the body andthe pipeline. Prevent it from directsunlight, rain, wind, heat and cold, pollution, theft or animal damage.* The temperature of the incoming water should be between 4.4-37.8oC (40-100oF). If the waterheater is installed after the softener, one-way check valve should be installed at the pipeline toprevent backflow of hot water.*Make sure that the softener is installed and maintained by 3M or 3M authorized dealer and installers.3 Main steps for installation3.1 Preparation before Installation3.1.1 Checked that all installation conditions are met before installation. Confirm that the inlet and outletpipes, power and floor drain of sewage discharge outlet are conform to the requirements.3.1.2 First, turn off the main water supply. Then turn on the water faucet to drain off anyexcess water from the pipe.