My son's house uses a large gas water heater for both hot water and hydronic heat in winter. Last week we had a couple hours of extremely heavy rain. The water heater failed to light the next day and water was leaking from the bottom of the heater. Eventually it was found that rain had entered the water heater via one of the vent pipes and after the water was removed, the water heater would light up and function properly.
Question is.... every time I see one of these high efficiency systems, the pvc [assume gas rated] pipes leaving the building have one pipe with an elbow pointed down and the other is just horizontal. Why can't they both point down, ensuring less change of water intrusion? Is it against code?
Question is.... every time I see one of these high efficiency systems, the pvc [assume gas rated] pipes leaving the building have one pipe with an elbow pointed down and the other is just horizontal. Why can't they both point down, ensuring less change of water intrusion? Is it against code?