Hello everyone! I need some advice on a mixing valve in a domestic water system. Here is how my system is set up. I have a wood/coal furnace with a hot water coil that thermosiphons into a 50 gallon storage tank. This usually supplies enough hot water when its cold, but on a warmer day it gets behind. We then have a tankless hot water heater we can switch over too on the warmer days or when the stove is not going. What I was thinking of doing is installing a mixing thermostatic mixing valve b…
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