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Core systems A. Use a central plumbing core, where plumbing areas are placed in close proximity to the water heater. B. Pipe hot water directly to each fixture or group of fixtures using smaller diameter piping when appropriate and as direct a path as possible. C. Are more expensive and take longer...
Demand-Initiated Recirculation Systems A. Consist of one continuous hot water supply loop that recirculates water throughout the home. B. Save water because they can reduce the wait time for hot water and return ambient-temperature water stored in the piping back to the heater. C. Are considered...
Manifold Plumbing Systems A. Uses larger, inflexible piping. B. Are also called parallel pipe or home run systems C. Use small diameter, flexible piping (such as PEX) that run directly to each individual fixture from a central manifold. D. Use of flexible piping allows these systems to be installed...
Trunk and branch systems A. Are the most common type of hot water delivery system. B. Are most suitable for larger homes in terms of maximizing hot water delivery system efficiency. C. Are characterized by one long, large diameter main line (i.e., the “trunk”) that runs from the water heater to the...
These lecture notes provide information about the improtance of system design and a balanced system.
The definition of a balanced HVAC system is: A system that operates under neutral pressure, where the amount of air blowing out the supply ducts should match the amount of air getting pulled into the return ducts. A system that operates under positive pressure, where the amount of air blowing out...
The “Four Ds”of controlling moisture and fungal growth resulting from moisture are: Deflection, drainage, drying, and durable components Diffusion, drainage, drying, and durable components Diffusion, deflection, drainage, and drying Deflection, diffusion, drainage, and durable components

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