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Posted by Dave on January 05, 2006 at 20:41:14:
I have the Lochinvar boiler that will be getting repiped this month with the addition of an Ergomax reverse indirect tank.
Currently, the piping in the boiler loop is 2" black threaded pipe and the supply and return manifolds are 1.5" black pipe.
The plumber came over tonight to finalize what he will be ordering for piping/parts. He wants to repipe the boiler loop in 2" copper. So the piping to and from the boiler and buffer tank would be 2" copper.
Then he would use 1.5" copper to connect the existing steel supply and return manifolds to the tees at the buffer tank.
With only the 150,000 btu burner running, you said we needed about 16 gpm flow. And with both burners running, we would need about 26-30 gpm.
From what I've read, the 2" copper would allow 45 gpm max, while the steel would allow 50 gpm max.
Will the Taco 0010 pump be able to supply the needed 26-30 gpm flow through the 2" copper pipe? He figures we need about 30 feet of piping plus the needed checkvalve and gate valves.
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