Here goes,
I bottom fill my mash tun. (filtered tap water@ 27deg C)Then I hook up my pump to my heat exchange and bring my mash up to 40c. Once I hit 40c I shut the tap off to maintain mash @ 40 and bump the temp up of the heat exchange up to 86c.
When I hit 86c I turn the pump back on to hit my next step of 60c in under a minute. At this point I only use the pump to maintain temp, so for most of the time it is off. After 40 min. I get the heat exchange up to 78c for the next step. Turn the pump on and when I hit 65 I dump that first lot of wort into the boiler. Then I dump water from my heat exchange into the mash tun at 65c and hold it there for 40min then dump it into the boiler. From here on in I fly sparg (using da pump) till I hit the quantity of wort I need.
So as you can see I use a mixture of heat and infusion profiles.
Hope this has been some help
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