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1. Check if the heater is filled with water and that the primary system is ready. 2. Set the controls on the primary circuit t of the boiler to the required sanitary water temperature. 3. Open boiler supply and return valves (if installed) 3.3 Shutting down For longer periods 1. Close the cold-water tap. 2. If there is any risk of frost damage, drain the tank completely. 3.4 Maintenance The pressure relieve valve must be tested regularly by opening test lever for some seconds. The water must run out in a full jet. Close lever again, making sure it sets properly and the valve is not leaking. Check if the drainpipe is open. It is recommended to arrange for a maintenance contract with the installer. 4. WARRANTY 4.1 Warranty in general If within one year of the original installation date of the tank supplied by A.O. Smith any part or component other than the tank shall prove upon examination by A.O. Smith, and in the exclusive opinion of the latter, to be defective in material and/or workmanship, A.O. Smith will exchange or repair such part or component. 4.2 Warranty of the tank If within 5 years of the original installation date of the tank supplied by A.O. Smith, the tank shall prove upon examination by A.O. Smith, and in the exclusive opinion of the latter, to be leaking due to rust or corrosion from the waterside, A.O. Smith will supply a complete new tank of equivalent size and quality on ex factory basis. On the replacement tank a warranty will be granted sufficient to cover the not expired portion of the original 5 year warranty of the originally installed water heater. WARNING: the warranty period will be reduced to 1 year from the original installation date, if unfiltered or water softened to less than 70 ppm flows through or remains in the tank. 4.3 Conditions for installation and use The warranty ensuing from sections 4.1 and 4.2 will only be valid, if the following conditions have been met: a. The tank is installed in accordance with A.O. Smith’s installation instructions for that specific model, as well as the local installation and building regulations, and all relevant rules and regulations imposed by the authorities. b. The tank remains installed in the original installation location. c. Exclusively potable water, free to circulate at all times, is used (for heating salty or corrosive water a separately installed heat exchanger is mandatory). d. The tank is free of damaging scale deposits, due to periodic maintenance; e. The water pressure and/or water temperature does not exceed the maximum values stated on the water heater’s type plate and /or in this manual. f. The tank is located in a non-corrosive atmosphere or area. g. The tank is fitted with an expansion tank or inlet unit that is approved by the relevant authorities, that is of sufficient capacity, not exceeding the working pressure rating as indicated on the tank; the tank is possibly also fitted with a temperature and pressure relief valve that is approved by the relevant authorities, and that has been fitted in accordance with A.O. Smith’s installation instructions for that specific water heater model, and furthermore, the local installation and building regulations, and all relevant rules and regulations imposed by the authorities. h. The anodes have been inspected and renewed when worn for 60% or more. 4.4 Exclusions The warranty ensuing from sections 4.1 and 4.2 will be null and void: a. If the tank...

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