Click here to Find a Contractor in your area.
Welcome! Here are the website rules, as well as some tips for using this forum.

If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Need to contact us? Visit https://heatinghelp.com/contact-us/.

Calculating Head Pressure loss

Linkman24Linkman24 Posts: 10Member
Hi, I am trying to figure out what size circulator pump I need for a heating system install. When calculating head pressure on a system with zone valves, do I consider the longest run in a zone as well as the supply and return lines from the boiler? For example, I have total supply and return line length at 208 ft and one of my five zones has a run of 145 ft. Please let me know as I don't want to buy the wrong circulator.

Comments

  • EBEBRATT-EdEBEBRATT-Ed Posts: 6,035Member
    If you have several zones the longest zone usually has the most head loss, but it depends on the pipe size and the flow through the pipe.

    The common piping in and out of the boiler and the boiler itself is calculated separately using the total flow (as if all zones are on) and that total is added to the zone with the highest head loss
Sign In or Register to comment.

Welcome

It looks like you're new here. If you want to get involved, click one of these buttons!