Installing an Automatic Shutoff for Boilers
I’m renovating a 150-year-old 3-story 5,000 sq ft building in Rutland, Vermont. It was constructed as a single-family home and then was split into 4 units.
The building currently has 4 boilers—one subdivided for each unit—that provide hot water for both domestic use and piped radiators. That is what I currently have but I’m on the verge of doing a heat pump retrofit and putting in heat pump hot water heaters.
I need to set up a temperature-controlled automatic shutoff for my boilers. My plan is to retrofit the building with air-source cold climate heat pumps and they are rated to be effective down to 0° Fahrenheit. My ideal solution would be for the heat pumps and boilers to communicate through a single thermostat and for the heat pumps to be used exclusively until the temperature drops so low that only the boilers can be effective. I don’t know of any way to network my heat pumps and boilers together like that—so I’m looking for a simple temperature-based shut-off system for my boilers that I can set (lower than 30° F).
What kind of simple temperature-based shutoff can I install for the boilers?
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