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Bob joins Steve Bottazzi, a plumbing contractor, who is taking out an old boiler system and installing a new state-of-the-art system. The new system at 280,000 BTU is three times the strength of the old boiler and is smaller in size. It also serves as the heater for the household hot water tank. Steve shows Bob how he adds the manifold on each side of the boiler to direct the flow to the four zones in the original and new sections of the home. He also gives Bob a lesson on threading pipe. More information
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