how to turn pump speed down?

[DrGonzo]

How do you turn the pump speed down on a boiler to stop the whistling sound in the radiator pipes?

 

[ianmcd]

is the pump within the boiler and is it a combi boiler ?

 

[DrGonzo]

is the pump within the boiler and is it a combi boiler ?

vaillant ecotec plus so yes I assume so.

 

[ianmcd]

Then in that case sorry but you can not adjust the pump speed it MUST be on the factory setting in order for the boiler to operate correctly, have a read on here about balancing your system , this might reduce any noise issues you may have

 

[picasso]

I thought you could change the pump speed on d19 on the ecotec plus depending on system load ? as its a combi I cant see the system being that big, (although you never know)

 

[petertheplumber12]

yes d19 mode it can be changed from factory setting of 2 speed or down to 1 speed but no higher than 2

 

[DrGonzo]

yes d19 mode it can be changed from factory setting of 2 speed or down to 1 speed but no higher than 2

what's d19 mode?
Can I do that on the digital control panel on the front of the boiler?

 

[Agile]

Yes, if you read the instructions with the boiler.

However, I would suggest you check the balancing first because its not normally necessary to do that.

Tony

 

[DrGonzo]

Yes, if you read the instructions with the boiler.

However, I would suggest you check the balancing first because its not normally necessary to do that.

Tony

How do you measure the tempeature of a radiator?
So, across the whole house, radiators should not differe in temp by more than 12 degrees?
At the moment, they all have the thermostatic valves turned to full.

 

[kevplumb]

two thermometers
one flow
one return
11 deg drop
or you can spend a lot of wedge on a fancy all singing dancing gizmo