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I am installing a new boiler and have some problems with dimension.
1 1/2" piping coming from the boiler system supply in to the Air Scoop. there should be 18" of horizontal pipe witch i don't have.
Between the supply and the return I should put a 1 1/2" by pass valve. With two Ts and the valve I don't know if that will fit in 5". Must the By Pass Pipe also 1 1/2" or can I go smaller ? The boiler is a Burnham MPO-IQ 84 for two Zone and water heater.
The print shows 1 1/2" pipe lay out.
What to do? going around in loops or what ?