I have an NTI200 propane boiler that takes care of all my radiant and domestic hot water. It was installed with a primary and secondary loop. Ive been given an older tarm combination boiler that will burn wood, coal or oil. Any thoughts on how to tie these two systems together?
	
		
			
		
		
	
				
			 
	 
	 
 
		 
 
		 
 
		