After discovering that the direction of the water supply and return of the PEX Fittings Plastic manifold is reversed, the filter must be changed to the correct pipe direction in time.

If a circulating pump and other devices are installed on the previous return pipe, then it must be removed in time.

Because if it is not removed at this time, the original filtering and boosting accessories will hinder the normal passage of water flow, and the impurities entering from the main pipeline will be "sealed" in the floor heating pipeline, which cannot be eliminated.

If the indoor space is not suitable for operation, or the filter is installed on the outdoor household valve, then it must be re-taken after the heating household valve, and the indoor PEX Ball Valve does not need to be modified.