Taco 570 Series Zone Valve Animation
In this video, Ed Young demonstrates how the Taco 570 Series Zone Valve works, covering both its electrical and mechanical operation.
A Cautionary Tale for Replacing Boilers on Hot-Water Heating Systems
In this excerpt from his Classic Hydronics seminar, Dan Holohan tells a story about a mansion that had two Ideal Redflash boilers, each with a rating of 500,000 Btuhs. Dan talks about the importance of doing a heat-loss calculation for boiler replacement jobs, why this house (with only a heat-loss calculation of 375,000 Btuhs) had two giant boilers, and how they solved the problem with primary-secondary pumping.
Want to learn more? Read Dan Holohan’s book Classic Hydronics: How to Get the Most From Those Older Hot-Water Heating Systems.
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