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Using Pex Radiant Manifold for Cast Iron Baseboard.
I'm in the process of redoing the heating system in my house 2 stories with unfinished basement. It use to have case iron standing radiators. I took them out and I'm installing 9" Cast Iron Baseboard. Before everything was on one loop and one zone. I'm splitting it into 2 zones for each floor and using 3/4 pex to make the connections. Now this is what I'm planning. I am going to have 2 loops on each zone. Meaning two Manifolds one for each zone. http://www.pexuniverse.com/ssm102-steel-radiant-heat-manifold
. Now the Pex Radiant Manifolds have a max flow rate of around 1.6 gpm per loop. Is that going to hinder my BTU output for the cast iron baseboard? Is it worth using this manifolds or am I better off making my own using 3/4 tees and ball valves for each loop? I know that the manifolds have flow gauges. Any advice will be greatly appreciated.