A multiple boiler system using sectional cast-iron boilers has been configured to supply two loads as shown below. A “crossover pipe” is installed in case the flow rate in the primary circuit is different from the flow through the boilers. There are several piping errors in this proposed design. Can you spot at least five of them?

Southern Trust Home Services began life on a farm. An electrician by trade, Ted Puzio founded his contracting business in 1995 while raising his two teenage sons. Then named TP Electric, Puzio and his sons renovated and flipped farmhouses before building a two-story facility to both live in and use as a workshop.

Plumbing & Mechanical Chief Editor Nicole Krawcke had a chance to chat with Chris Carrier, director of marketing for RWC, and David McCulloch, executive director of Trade Talks USA, about their partnership and campaign to attract new blood to the plumbing industry.

One of the most recent initiatives undertaken by the Radiant Professionals Alliance Hydronics Industry Alliance — Commercial (HIA-C) committee is designed to create interest in the Hydronic University and introduce the future “Hydronic Solutions” videos and tutorials, white papers and training.

For decades, changing out a thermostat for a retrofit hydronic heating system was a simple task for a service technician. From Bangor, Maine, to Breckenridge, Colorado, the mere two, 18-gauge thermostat wires running through a home was not a concern (short of the random nail or mouse taking one of the two out).

How can engineers and contractors design wet fire sprinkler systems equipped to prevent corrosion and dry systems equipped to prevent freezing? That has long been a question central to code requirements and new product development.

Water heater manufacturer Rinnai America Corp. has been working for the last three years with a state department of corrections to upgrade the water heating systems in five prison facilities.