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.
Installing condensing gas combi boiler or boiler only
When you are installing a condensing gas combi boiler or condensing gas heating boiler only I know the boiler manufacturer has certain GPM needed for the primary pump my question is the secondary pump(s) do these pumps need to have a higher GPM than the primary pump or does it not matter?