huffdawg said:Whats the most simple inexpensive way to control an indirect .
Its 9' just to the top of the buffer tank..Would it not get to HOt Elliot ,ewdudley said:huffdawg said:Whats the most simple inexpensive way to control an indirect .
With those three meter ceilings, the most simple and inexpensive would be to hang the indirect tank sideways from the ceiling and thermo-siphon self regulating flow from the buffer tank.
--ewd
I was kinda half serious.huffdawg said:Its 9' just to the top of the buffer tank. Would it not get to HOT?
maple1 said:Does that tank have a thermostat built in?
I would try to get the tank as high as possible, and plumb it so that it heats by simple convection, as ewdudley was getting at. But throw a small circ in that circuit (non-checked), so that if convection flow can't keep up, or there's a big demand, it will kick in when the temp drops to the calling point. Put a mixer on the DHW out in case the tank gets hotter than comfortable - all the bases should be covered?
huffdawg said:Any way you can do a diagram for me Eliot . I'm good at doing the work part but not design. I have three aquastat wells in the buffer tank , high middle and low.ewdudley said:Yeah, the TriangleTube Smart Tank has a conventional adjustable snap-disc aquastat, so can't get much simpler than a normal zone relay controlled by the indirect tank's existing aquastat, since the pump and plumbing are all in place.
Some scheme would be desirable to guarantee that the buffer is hotter than the DHW tank setpoint, either a differential control or a simple aquastat, so that the pump won't run if water in the buffer tank is not hot enough.
jebatty said:Good point on constantly running circulator; still by doing so I would not want my DHW to backfeed my storage/system through the hx and cool down because DHW is at a higher temp than storage. A differential controller will prevent this.
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