We are having water pressure issues after repiping the entire house. How do we program the recirculating pump after the repipe?
Most pressure regulators are adjustable, but 45 psi is adequate for the needs of most homes. Regulators often fail when removed from the system and should be replaced during a repipe but remain closed or open, not at 45 psi. I can't comment on your system design without a schematic, but I can say that you need to get a good plumber to review the entire re-pipe. You are probably losing pressure due to insufficient pipe size or a short circuit. Hot water recirculating systems are complicated and you need to call in a specialist that can come to your house and inspect what sounds like a poor installation.