Bryan,
I think that you just had a little communication problem with ITR. You may try calling them back and explain what your problem is. If they can not help you, it would probably be worth looking at the heating system that Jim Rixen at Rixen Enterprises sells that is a direct replacement for the Hurricane unit in our coaches. Rixen's unit is a diesel boiler like the Hurricane and it incorporates electric elements like the Comfort Hot system, and it is all in one unit that fits into the same spot the Hurricane is in.
Gerald