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Does Aquastat Function Differently For Reverse Indirect vs. Standard Indirect?
As I understand it, in a standard indirect, the sensor/aquastat communicates the temperature of the DHW in the tank back to the boiler control. On DHW priority, the dedicated circulator will move hotter boiler water through the indirect's coils to raise the temperature of the tank water--hopefully to at least 140, to be then mixed down to 115º or so.
However with a Turbomax or other reverse indirect, there is no stored hot water supply, it's basically on-demand. The aquastat/sensor is measuring the BOILER water(?) in the tank which can heat the DHW in the coils very rapidly and activating the circulator when temp goes below the low limit.
Does the fact that with the standard direct the DHW itself is being measured and the reverse indirect the boiler water is measured have any bearing on how the controls should be set up? Does it make any difference to let's say, a Hydrostat 3200+ what it's sensing or does one just experiment a bit and find which setting gives you the right temperature water? (gas atmospheric boiler.) In this case, turbomax aquastat is the Ranco 060-100. Turbomax will not be used as a buffer, only as indirect.