Water Pump Issue

[ShaunCorbs]

your issue is not with hot water so the flange makes no difference

will as we don’t know what he’s done with the vent connection / will be pulling air into the pump

 

[green grant]

so have you already tested the water outlet and have readings of 3 bar? what is the flow rate? You need to test static (when nothing is happening) and then when using things (real world)
The tank's outlet pressure will be governed by a different quation which will include height

 

[green grant]

will as we don’t know what he’s done with the vent connection / will be pulling air into the pump

he said cold water side only..easy enough to test that though

 

[egizz983]

will as we don’t know what he’s done with the vent connection / will be pulling air into the pump

i could just do one way valve for vent so would not be pulling air if thats the problem

 

[ShaunCorbs]

he said cold water side only..easy enough to test that though

but he’s boosting both hot and cold

so hot side need a flange else pump will wear quick due to oxygen being pulling in / could air lock

cold side ball valve isn’t rated for mains pressure will have a gravity nozzle in

 

[ShaunCorbs]

i could just do one way valve for vent so would not be pulling air if thats the problem

no no no that’s a bomb

 

[ShaunCorbs]

Op please get a pro in before you do something bad

 

[green grant]

i could just do one way valve for vent so would not be pulling air if thats the problem

so replace air with a vacuum LOL not a good idea. You don't have enough water through the cold side (you said it was cold side right!) so you create an operational work around (only use the pump in isolation) or you find a permanent solution. I hate this man but it does show what is needed

 

[egizz983]

so replace air with a vacuum LOL not a good idea. You don't have enough water through the cold side (you said it was cold side right!) so you create an operational work around (only use the pump in isolation) or you find a permanent solution. I hate this man but it does show what is needed

i was looking his video on how to install the pump

 

[egizz983]

Op please get a pro in before you do something bad

in my city plumbers there is no really good plumber they might suggest to replace water cylinder D

 

[green grant]

but he’s boosting both hot and cold

so hot side need a flange else pump will wear quick due to oxygen being pulling in / could air lock

cold side ball valve isn’t rated for mains pressure will have a gravity nozzle in

no no no that’s a bomb

wow, prone to the dramtic are we lol a bomb...how silly are you.

 

[ShaunCorbs]

wow, prone to the dramtic are we lol a bomb...how silly are you.

if he puts a nrv on the vent yes it’s a bomb

 

[green grant]

so replace air with a vacuum LOL not a good idea. You don't have enough water through the cold side (you said it was cold side right!) so you create an operational work around (only use the pump in isolation) or you find a permanent solution. I hate this man but it does show what is needed

if he puts a nrv on the vent yes it’s a bomb

LOL

 

[ShaunCorbs]

 

[green grant]

View attachment 47074

that's a good drawing...