- Messages
- 4,817
I have skim read this thread with there being 70+ posts so forgive me if I repeat anything that has been said.
Your Boiler will give 13 litres per min @ a 40 deg rise +/- 15%.
If you are testing the mains cold water flow rate at a tap, that does not mean the flow rate at the entry point on the Boiler will be the same. The standing pressure would be similar of course, (depending on how high the appliance is) but not the flow rate.
You will lose flow rate due to frictional resistances in the pipe work from the mains entry point in your property to the appliance. This may only be minimal.
I would ask the installer to test the flow rate beneath the Boiler and see what it is there. Then you can address whether the issue is a lack of flow or a problem with the Boiler itself.
There is a flow regulator inside these (erp version) and there is a strainer in the inlet.
If you want to run two taps you will be sharing the hot water from the boiler between them. There is nothing you can do about that with this Boiler.
Did you seek advice and discuss your requirements with Heating Engineers prior to deciding on a combi?
Unfortunately it does sound as though you have the wrong system for you. Even if the Boiler was delivering 13 lpm at 40 deg rise, it would still be unsuitable for you by the sound of it.
Your Boiler will give 13 litres per min @ a 40 deg rise +/- 15%.
If you are testing the mains cold water flow rate at a tap, that does not mean the flow rate at the entry point on the Boiler will be the same. The standing pressure would be similar of course, (depending on how high the appliance is) but not the flow rate.
You will lose flow rate due to frictional resistances in the pipe work from the mains entry point in your property to the appliance. This may only be minimal.
I would ask the installer to test the flow rate beneath the Boiler and see what it is there. Then you can address whether the issue is a lack of flow or a problem with the Boiler itself.
There is a flow regulator inside these (erp version) and there is a strainer in the inlet.
If you want to run two taps you will be sharing the hot water from the boiler between them. There is nothing you can do about that with this Boiler.
Did you seek advice and discuss your requirements with Heating Engineers prior to deciding on a combi?
Unfortunately it does sound as though you have the wrong system for you. Even if the Boiler was delivering 13 lpm at 40 deg rise, it would still be unsuitable for you by the sound of it.
Last edited: