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Unit #7-hydronics 1-1

Horizontales
An air separator designed to be installed in hydronic piping for air elimination in installations that cannot use the standard dip tube boiler fittings.
An additional loop taken off of a secondary loop to provide HTF to an additional terminal unit.
The large pipe that distributes HTF from the heat source or chiller to smaller branch pipes.
A portion of a hydronic piping system carrying only a part of the total capacity of the system.
A smaller pipe taken off from the main or riser to supply other smaller branch lines or terminal units.
A system in which the first terminal unit taken off the supply main is the first to connect to the return main.
A horizontal branch connection from the main or riser to a terminal unit.
A piping system that circulates HTF through a single main in which each terminal unit serves as a portion of the main.
A fitting that creates a greater-than-normal pressure drop in a line in order to divert flow to another line.
Verticales
A section of a building that is controlled by one HVAC controlling device, such as a thermostat.
A system in which the first terminal unit taken off the supply main is the last to connect to the return main.
A hydronic heating and cooling system consisting of separate hot supply, hot return, chilled supply, and chilled return mains.
A separate piping configuration connected to the primary loop and supplies HTF to separate heat transfer loads or terminal units.
A hydronic piping system in which a single main, or primary circuit, provides HTF to terminal units that are each connected to the main by a separate secondary loop or circuit.
Vertical mains or large vertical branches from which smaller branch lines are taken off to provide HTF to terminal units.
The piping directly connected to the heat source or chiller inlet and outlet and to which the compression or pre-charged expansion tank is connected.
When two or more circuits or branches have a common starting and ending point.
The section of the main in a multiple circuit system that carries the combined capacity of the circuits.