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Posted by Sam Watson on October 03, 2008 at 11:58:22:
I have a Weil Mclain gas boiler.
Model: CG-6
Year: 1987
Series: 9
BTU: 175,000
Water, MBH 124
I had to empty the system of all the water so I could replace the pressure relief valve. Can anyone tell me if I need a rust inhibitor and if so how much?