Troubleshooting DHW Recirculation Systems

0:00 Intro
2:36 Learning objectives
5:16 Residential DHW system designs
22:25 Recirculation temperature creep
28:43 Commercial DHW system designs
30:55 Minimum flow rates
34:27 Energy codes
40:30 Valve sizing
48:04 Replacement market
51:07 Hot water wait times
53:10 Unbalanced commercial DHW systems
55:46 Types of balancing valves
1:03:38 Multiple pressure zones

It is of utmost importance to understand how to effectively apply mixing and balancing technology in order to optimize hot water delivery times, energy efficiency, water conservation and safety in domestic hot water (DHW) systems. In this panel discussion, Cody Mack and Kevin Freidt will reveal common symptoms found in problematic DHW recirculation systems and how to effectively resolve these issues. The seasoned duo will recap strategies they have shared with engineers and installers over the years, which led to a positive result for the occupants.

→ What to do if a mixing valve is not controlling the temperature consistently
→ How to size a digital mixing valve when replacing a thermostatic mixing valve
→ How to rectify DHW recirculation temperature fluctuations
→ How energy codes can impact your DHW recirculation systems
→ Addressing long wait times in multi-family projects
→ What to do in applications with multiple pressure zones

Cody has nearly 20 years’ experience as installation contractor, service technician, application engineer, product manager and national training manager for Caleffi.

Kevin is the director product management and technical support at Caleffi North America. Freidt has a bachelor's degree in mechanical engineering technology, more than 30 years of experience in the commercial plumbing and heating industry.

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Видео Troubleshooting DHW Recirculation Systems канала Caleffi Hydronic Solutions