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Should condensate pipe go below vent and how?

Use an appliance "wye" installed in an existing drain line, that way the water flows on an angle downward. Holes in drain lines ...
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What is causing leak at my boiler through pressure relief valve?

A problem I had (twice) with a boiler, was a pin-hole leak in the coil for the domestic HW supply. It let curb pressure cold water into the boiler which exceeded the relief valve. Eventually had to ...
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