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Adding Reset

I have a EFM oil boiler that I'm adding a Tekmar 256 to. The Tankless coil is not in use but still in place and plumbed. The previous owner of the house added a stand-alone Electric water heater( but that is another thread.) Am I wrong in thinking that I need to change the wiring of the Aqua-Stat (Honeywell 8124A) to allow the Tekmar 256 to do it's job? Can't find any info on this anywhere. I feel like I'm over thinking the fact that the aqua-stat will want to maintain the high and low limits set on it's dial as currently set up (140deg low/180deg high) Any help is appreciated, the weather sprites have been kind so far this year in PA but that won't last all season.