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In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
why use primary/secondary if not needed?
We're getting an HTP Elite FT boiler (110 KBTU/H) installed in a few days. This boiler has the vertical fire-tube HX with larger water passages. HTP says P/S piping isn't needed if there is sufficient flow. There is certainly sufficient flow (house has old gravity system with monster pipes).
But installer is (not unreasonably) refuting me by pointing to the piping diagrams in the manual...ALL diagrams relevant to our boiler size show P/S piping. It's only in the promotional material that HTP says P/S piping isn't needed...pretty sneaky
Isn't it bad practice to use a energy-inefficient setup (one extra pump) when it isn't needed?
P/S is certainly the CYA setup, and it already exists from the previous boiler so it's also the "quick change artist" option. I realize P/S doesn't hurt anything...well, except the environment and my wallet, slightly.