thanks... found the serial number (A2EA-6520 Beckett) and looking online, looks like the manufacturer doesnt give much in the way of a manual or schematic...
www.beckettcorp.com/product/productdetail.asp?detailid=12
though i did find some additional detail on:
www.alpinehomeair.com/_viewresource.cfm/...s_and_Service_Manual
and:
www.alpinehomeair.com/_viewresource.cfm/..._Installation_Manual
while they give some better detail they still lack anything i am recognizing as a bypass or setting to not use the return line.
doing some more research before i break down and either call someone or start taking apart my boiler.
if you need any computer or technology help, i'd gladly help you for the help you have already given me (espically since you stoped me from taking out my boiler pump)