Swimming Pool Heater Owner’s Information – Starting up your heater – Complete heater lighting and shutdown instructions are located on the inside of the heater. With a new pool or spa, always run the filter pump with the heater in the OFF position long enough to completely clean the water. This is to remove installation residue; it is also advisable to clean the filter after this residue clearing and before turning on the heater. When heating a cold pool, it is also recommended to run…