Plumbing & Mechanical columnist Ray Wohlfarth has a new book on the service of hydronic and low-pressure steam boilers titled, “Lessons Learned Servicing Boilers.”
Grundfos’ PACOpaQ is a compact HVAC packaged pumping system designed for systems such as chilled- and hot-water distribution, geothermal loop, and district heating and cooling.
A designer needs to connect an indirect water heater to a multiple boiler system. He selects a hydraulic separator and connects the piping of the indirect water heater on the same side as the boilers.