refil central heating system - airlock

[SUPERPLUMBER]

Hi All,

Ive drained a vented central heating system with an older NETAHEAT system boiiler. The system has 2 2port valves for the CH and hot water.

Ive refilled the system (opened up the ball valve in the FandE tank and bled the CH although i think theres an airlock as the pump is making a lot of noise.

any tips on how to remove the airlock.

redrain and refil?

if it makes any difference the property is a bungalow so rads only on one level

Thanks

 

[kevplumb]

lock both valves open with the levers when you fill and bleed the pump

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[SUPERPLUMBER]

thanks Kev,

ill try that, any way i can make sure the whole sys is full. do i need to drain the system again and refil? or just bleed the pump. I suppose if the pump is full then the +ve and -ve sides of the sustem should be flooded since the pump is at the neutral point.

you may be able to tell im not a CH engineer just a mere bathroom fitter.

 

[seco services]

useally opening the two valves and bleeding the pump will shift the airlock.
you can always run the pump on top speed to get it all circulating.

 

[Paul Barker]

Perhaps change your user name OP? Not being stumped by this scenario is basic plumbing ability. Lot to learn plumber.

 

[kevplumb]

bad day paul

 

[Paul Barker]

Nah, just seemed like an odd name for a green behind the ears. It's alright using funny names and not saying where you really live, but the forum is about helping people so a misleading name.

 

[SUPERPLUMBER]

thanks all, will give it a whirl tomorrow.

although whats my name or where i live got to do with asking for help from professionals? i dont claim to a CH engineer but just trying to deal with a prob ive never experienced before.

 

[seco services]

as you said your a bathroom fitter, so you called yourself super plumber.

least you never called yourself super gas engineer then i could understand if you didn't know the fault.

can't see whats wrong with your name

 

[kevplumb]

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[Paul Barker]

I wasn't referring to you specifically Superplumber in the sense of where you live I was referring to the strange habbit of some forum members to say they come from other countries. they may find this amusing or something.

Not really meaning to dis you, but noticed you know much less than a super plumber would whether or not heating is his main trade. Plumbing training does include heating.

 

[dextrous]

I wasn't referring to you specifically Superplumber in the sense of where you live I was referring to the strange habbit of some forum members to say they come from other countries. they may find this amusing or something.

Not really meaning to dis you, but noticed you know much less than a super plumber would whether or not heating is his main trade. Plumbing training does include heating.

But he had a cold that day

 

[SUPERPLUMBER]

lol.

maybe i was trying to be ironic with my name. How dextrous is Dextrous, he may only have 3 fingers...and how agile is Agile? i reckons hes a fat bloater, but who knows?

I thought that this forum was where people came to learn stuff from the time served pros. If your too busy to help those still trading with L plates then i suggest you dont post.

 

[JayJay1978]

I don't know how you plumbers cope sometimes, our old house had both motorised valves hidden under the kitchen floor!

How do you manualy open them then?

Same for hidden pumps.

 

[Paul Barker]

lol.

maybe i was trying to be ironic with my name. How dextrous is Dextrous, he may only have 3 fingers...and how agile is Agile? i reckons hes a fat bloater, but who knows?

I thought that this forum was where people came to learn stuff from the time served pros. If your too busy to help those still trading with L plates then i suggest you dont post.

you can't help people by using a misleading user name.