I am converting my current set up so that my oil boiler will go cold. I have an owb (plan on getting a Garn Jr next year) with a heat exchanger and am converting from serial to parallel setup. I have a honeywell L8124A aquastat on my oil burner which controls one of my zones. (My system has a pump for each zone) The problem I am having is that the cirulator pump in that one zone won't active if the oil burner water is cold. I figured out its a feature designed into the L8124A aquastat to allow the oil burner to catch up. I believe I could just add another zone control relay (not use the zone control on the L8124A) so the pump works no matter what the temp is in the oil boiler. But I'm contemplating if I should do that or is there a control of some sort that I could replace the L8124A with that I can set up to recognize which system is needed. Like a control designed for primary and secondary heat sources? The additional zone control would be easiest and cheapest but was just wondering if there's a better way to do this?