Head pressure in a piping system for hot water heating is defined as what?

Head pressure in a piping system for hot water heating refers to the height of water that can be supported by the pressure in the system. It is closely related to the concept of resistance in the entire piping system, which is measured in feet of water. This measurement quantifies how much pressure is required to move water through the piping system against various resistances created by friction, elevation changes, and any fittings or valves.

Understanding head pressure is crucial when designing and evaluating hot water heating systems, as it directly impacts the efficiency and effectiveness of water movement. A system that has adequate head pressure ensures that water can circulate properly, allowing for consistent heating throughout the system without restrictions.