dont worry about rewiring your aquastat. turn the lo limit all the way down on the oil boiler. set the high limit about 10* higher , this shiuld let the pump run for you. the zone valves look like old honeywell units, if they are they might stay open without power. if you ran out of oil, and the protector relay tripped ,dont touch the red button and the oil gun will not try to light. hope this helps.