Tony, a couple things to clear up first...
You say that your boiler has a 'coil'... just wanna be sure you are talking about the domestic hot water coil.
You said that you 'removed the aqua stor' tank... how come? Did you abandon using the boiler for domestic hot water, and also abandon the coil in the boiler?
And now you are swapping out the boiler aquastat from the old 'triple' aquastat and installing the L7224 to run the boiler as a cold start?
It sounds as though you have the wiring correct. But you must be asking questions because it's not working?
This basic diagram without wire colors, etc, shows the hookup for two valves... imagine there's three... and I believe that it illustrates and agrees with your description: