WOW the two braided hoses going to the prv were both blocked with crap like rust. I've cleaned them out and put everything back together. It all seems to work just need to go around and bleed the radiators. The CH water pressure switch has a small leak so I will replace that. I think I'll call in a professional after Christmas to flush the system and give it a service. Thanks all for the help. Have a good Christmas. 
