I batch sparge in my 48 qt cooler MLT + CPVC manifold with room-ish temp (80*-100* F) RO water treated w/ CaCl. Calculate sparge water with: http://www.brew365.com/mash_sparge_water_calculator.php.
Stir, wait 5 mins, stir, vourlaf, drain, boil, cool, pour, pitch, ferment, bottle, and pray.