Gellfex
Member
I'm at the tail end of a long "new heating system" story. The short is that I've got a W-M CGi 4E 90k btu boiler running 3 heat zones in my 1300 ft apt, plus a Phase III HL-36 indirect WH. Since I tacked the indirect onto the zone manifold that was built entirely out of 3/4 by the plumbers who installed the CGi, it's not getting enough flow for a speedy recovery, and the 4 way WH priority zone controller (Taco zvc404) installed means that the house gets cold while the heater struggles to get up to 130 after my wife runs a bath. (There's a tempering valve and I'd prefer to be able to run it 140 for more effective capacity)
My plan is to rebuild the manifolds to give me 1" for the WH. The question is, since I'm tearing it back to the circulator flange anyway, should I tear it back to the boiler and install a 2nd circulator instead of just a 1" zone valve running on the current priority controller? Would it make any real difference, or would that be too much load on the CGi or a slow WH recovery if everything is calling at once and I'm no longer using the zone controller?
Thanks for any opinions.
My plan is to rebuild the manifolds to give me 1" for the WH. The question is, since I'm tearing it back to the circulator flange anyway, should I tear it back to the boiler and install a 2nd circulator instead of just a 1" zone valve running on the current priority controller? Would it make any real difference, or would that be too much load on the CGi or a slow WH recovery if everything is calling at once and I'm no longer using the zone controller?
Thanks for any opinions.