TonyT Posted January 26, 2021 Posted January 26, 2021 Do it at the main flow and return, the heating pumps only push the water about the heating circuit
Nickfromwales Posted January 26, 2021 Posted January 26, 2021 Are the pump isolation valves all 100% open? Close them fully, then open them fully to be completely sure.
gck303 Posted January 27, 2021 Author Posted January 27, 2021 On 26/01/2021 at 23:39, Nickfromwales said: Are the pump isolation valves all 100% open? Close them fully, then open them fully to be completely sure. Expand Thank you very much. They were not quite 100% open. I fully opened the valves and the noise changed slightly and the flow picked up. I am now upto 16-17 l/m when heating the DHW!!! Is this what you would expect with two 15-50/60 pumps running at 'III' with 22mm pipework? Is still seems slow. The ASHP says the max from rate is 25.8 l/m. Or, am I hitting the limits of the 22mm pipework?
SteamyTea Posted January 27, 2021 Posted January 27, 2021 https://engineering.stackexchange.com/questions/8004/how-to-calculate-flow-rate-of-water-through-a-pipe
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now