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Recomendation for 2 DHW tanks; Series or parallen equal distance?
Currently have a job with 2 tanks, 1 40 gal, 1 50 gal. It has been piped in series, but I am not sure if this is the best Idea? Any help greatly appreciated. The reason the tanks are mismatched is that they added a large spa type tube and needed more hot water so someone piped the 50 gal. in series.