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4 Zone

Pete_34 Member Posts: 1
I have an Oil Burner, a SR503 Switching relay,a L7224a Aquastat controller and a Honeywell L4080 Aquastat for a hot water tank.I would like the tank to be zone one priority,which leaves 2 zones that can be wired to the SR503,but where do I hookup the fourth zone.I have x1 and x2 from the Sr503 going to tt on the L7224a to operate the boiler when the three zones call for heat,so can the fourth zone be wired to the L7224a???

Help! Pete


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