An installer was asked to include an air-to-water heat pump into a low-temperature radiant panel heating system supplied by a mod/con boiler.

An installer sets up a zoned distribution system as shown below. To keep it simple, he uses the same size piping for the headers and all the distribution circuits. The heat source is a low-mass, copper-tube boiler with high-flow resistance.

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.

The Glitch & Fix: October 2018

The Glitch and Fix: September 2018

Drawings have consequences. Can you spot few details that are incorrect?