Retrofitting

An industrial-sized boiler is a complex and intricate mechanism that requires periodic adjustment to operate most efficiently. The manufacturer’s guidelines are the best sourcebook for maintenance scheduling, although there are some general tips that apply […]

A three-way valve is the basis for the most common way to supply individual coils off a main hydronic loop. The valve opens on a signal from the thermostat, diverting a portion of the water […]

A large facility that requires several chillers to satisfy the peak building load usually has chillers that have different capacities and efficiencies. As the building load increases from zero to the peak daily use, there’s […]

Chillers operate more efficiently when they provide chilled water at warmer temperatures. A familiar EMS controls application keeps close tabs on the building load by measuring the return fluid temperature and rate of flow, then […]

Hydronic systems are often designed with a backup pump for both the hot-water and chilled-water loops. This not only allows uninterrupted service when one of the pumps is down for maintenance, but also— with a […]