I have just installed a Tarm OT50. I have the oil side set up and running. I also have a 3 zone controller set up to run the two zones for the house and one zone for the superstor. I want to start using wood, but i need to set up the overheat control. I have a honeywell L4008 high limit aquastat. The wiring schematic in the Tarm manual shows the aquastat being set up as a jumper for thermostat for the main zone to use it as a dump zone. I want to get a little more complicated. I Have two zones for the house, one upstairs, and one downstairs. I would like to somehow set both of them to be the dump zones for the boiler so if it overheats it just dumps the extra into the house. Is there a way to wire this aquastat to two zone but still have them work independantly? If i just simply connect a thermostat wire from the aquastat to the connection on the zone controller for the two zones it will jump the zones so the thermostat for one will control both. I want them to still work independently when the boiler is not overheating. Can someone possibly explain how to do this, or point me to a diagram that would show me. I've been searching but coming up with nothing.