The schematic in Figure 1 represents a drawing I recently reviewed for a proposed system that was to supply three zones of finned-tube based, two zones of low-temperature radiant panel heating, and an indirect domestic water heater.
An installer is asked to install heating in the slab floor of a farm workshop. The owner has already purchased a used cast iron boiler that will run on propane.
The Glitch: Eager to keep up with this new technology, an installer decides to install a hydraulic separator between a boiler and distribution system as shown below.
An installer needs to provide heat from a conventional gas-fired boiler to a large buffer tank. The tank is necessary because of a highly zoned distribution system.