Bleed Heating Pump

[craigb2120]

Hi,

I recently changed my hot water cylinder / immersion and pump.

I have bled al the rads and the pump and it all works.

I now have to bleed the pump each day to get the boiler to heat the water or heating. The boiler will only fire up if I release the air in the pump by ventng it.

It seems that it keeps getting air in it ?

I have to bleed the pump with all the system on - there is no air released if i open the vent with the system off

Before i replaced all of the above i had the same problem and also dirty water which is why i changed it. Also the tank was also very very old ...

Any ideas please ??

 

[gas4you]

Is the system filled up fully and the header tank full of water?

Which way up is the pump?

 

[craigb2120]

Hi,

The system is full and the header tank too.

The pump is the correct way with the arrow up.

 

[craigb2120]

I just bent the float so that the tank is a bit fuller as it was only a third full.

 

[gas4you]

Sorry, I wasn't very clear when asking which way up it was.

In my mind I was asking if it was horizontal with the air bleed screw pointing upwards.

 

[craigb2120]

Hi,

The bleed screw is on the front of the pump verticle. (i.e. not lying flat)

 

[gas4you]

Forget what I said then

 

[david17uk]

Is the cold feed from the tank blocked?