An installer is asked to pipe up two larger commercial air handlers supplied by a dual boiler setup. 

An installer plans to use a single-speed monobloc air-to-water heat pump to supply several panel radiators. 

A multiple boiler system is set up as shown in Figure 1. The objective is to add heat to the system in three on/off stages. 

If you have a steam boiler you’re also going to have a pressuretrol.

Sherlock Holmes has always been one of my favorite fictional characters. I envied how he would notice each detail and use every one of his senses to solve the crime. 

Figure 1 shows a hydronic system that's intended to supply four panel radiators, each with its own thermostatic radiator valve, and an indirect water heater from a gas-fired sectional cast-iron boiler.

An installer is asked to connect an old (but still working) propane-fueled cast-iron boiler, which was salvaged from another project, to a slab-on-grade floor heating system in a new workshop.

An installer is asked to pipe two independent zones of high mass floor heating to a conventional gas-fired boiler.

How to become a psychologist and therapist in one easy lesson: Open a mechanical contracting firm!