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Domestic Hot Water Systems

Start Date:8/26/2021

Start Time:11:00 AM CDT

Duration:120 minutes


This course will provide an overview of domestic hot water design issues. Topics covered will include hot water fixtures; demand in GPM, GPH or fixture units for various buildings and number of occupants; water heater sizing (instantaneous vs. storage); temperature controls such as thermostatic mixing valves; pipe routing to minimize dead legs; hot water temperature maintenance (pumps and heating cables); and hot water velocity/pipe sizing. The course will also discuss the maximum and minimum temperature requirements per ASHRAE 188 for scalding and bacterial growth (Legionella) issues, as well as the importance of system maintenance to prevent such issues.

Attendees will be able to earn 2.0 LU | HSWs through the American Institute of Architects (AIA) and 0.2 CEUs through the American Society of Plumbing Engineers (ASPE) and the International Code Council (ICC).

Learning Objectives:
•Learn how to properly size water heaters and determine the amount of hot water required for various building types
•Learn about the different types of temperature controls in domestic hot water systems
•Learn how to maintain hot water temperatures throughout the system with proper circulating pumps and balancing valves
•Learn the maximum velocities for hot water distribution piping to prevent erosion
•Learn the maximum and minimum temperature requirements and maintenance practices to prevent scalding and Legionella growth

Price To Attend: $39

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Ronald George


Plumb-Tech Design & Consulting Services LLC

Ron George is a longtime columnist for Plumbing Engineer magazine and the president of Plumb-Tech Design & Consulting Services LLC. George has over 42 years of experience designing plumbing and mechanical systems. He has taught plumbing design and code review classes at the University of Wisconsin, the University of Minnesota, and Oakland Community College. George has also taught numerous plumbing, mechanical and fuel gas seminars around the country. His design experience includes hospitals, hotels, casinos, nursing homes, high rise buildings, convention centers, pro sports stadiums, airports, Industrial manufacturing facilities, schools and universities. He has served on and participated in many plumbing and mechanical product standards committees and plumbing, mechanical and fuel gas code committees. George is a constant advocate for safe plumbing systems and he has developed websites for scald prevention and legionella prevention.
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