This recent install of Alpine 105 replacing oil boiler required all new near boiler piping. It looks like a good job but I'm having some issues with reaching the setpoint in zones on really cold days here in NH. It had been short cycling but the US Boiler rep was brought in by contractor a couple days ago and he tweaked some settings to fix that. I think he said that he reversed the modulation so that system starts out on lowest setting (this boiler has 5 mod steps) and will work it's way higher if necessary - vs. the default way which starts at highest and modulates down according to demand.
According to the boiler's manual, the primary/secondary loops require that the closely spaced tees adhere to some strict parameters when piped. My setup (closely space tees) doesn't meet recommended parameters. I asked the boiler rep if that could cause a problem or at least a loss of efficiency. He said that he wasn't the "piping police" - and that his tweaks to the boiler should be sufficient. My contractor just kinda shrugged his shoulders. I know he'd repipe that area of closely piped tee's if required but I don't want to bust his balls if it really doesn't make much difference.
What would you do?
According to the boiler's manual, the primary/secondary loops require that the closely spaced tees adhere to some strict parameters when piped. My setup (closely space tees) doesn't meet recommended parameters. I asked the boiler rep if that could cause a problem or at least a loss of efficiency. He said that he wasn't the "piping police" - and that his tweaks to the boiler should be sufficient. My contractor just kinda shrugged his shoulders. I know he'd repipe that area of closely piped tee's if required but I don't want to bust his balls if it really doesn't make much difference.
What would you do?
