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After the tank is refilled, the appliance must be re-started according to the instructions located on the inside of the door. 3A. Start-Up Procedure With any new pool or spa installation, run the filter pump with the heater off long enough to completely clean the water. This removes any installation residue from the water. Clean the filter at Figure 24. Temperature Rise Measurement at Return Header. the end of this operation before starting the heater. Do not operate the heater unless the pool i