Noisy hot water system - Any ideas? (includes pictures)

[pop80_uk]

Hello all.
System is a Baxi WM 30/3 boiler (old but has had a new thermostat last year) and does work fine, a new Grundfos intelligent Alpha pump, Magentic filter, Honeywell 3 way valve.
2 tanks in the loft, one tank in the airing cupboard, boiler in the garage

Problem is:
When the hot water comes on in the morning on the timer, the whole system in the airing cupboard makes a whoooosing sound, like there is air in the system, but it been bled so many times now and no air comes out. The noise only comes from the pipes in here. And it stops after around 2 minutes.
What is it and how do we fix it please? Any ideas?

I have uploaded some pictures so you can see the pipe work.
Thanks!

 

[cross thread]

check pump setting ,also put a magnet round the expansion /cold feed connection (l/hand pic joint by wiring box) is should not stick to copper if it does sludge in system

 

[pop80_uk]

check pump setting ,also put a magnet round the expansion /cold feed connection (l/hand pic joint by wiring box) is should not stick to copper if it does sludge in system

Thanks for the reply,
It did not sticky, but there was more friction that I expected.

I think it might need a clean maybe,

I was going to use this:
http://www.screwfix.com/p/sentinel-x800-ultimate-cleaner-1ltr/84921

then drain it off and put this in:
http://www.screwfix.com/p/sentinel-...tr/99730#product_additional_details_container

http://www.screwfix.com/p/sentinel-x100-central-heating-scale-inhibitor-1ltr/79683

What do you think will this help?

Thanks!

 

[kittedup]

I'd swap out that manual air vent for an auto one first.

Ted

 

[pop80_uk]

I'd swap out that manual air vent for an auto one first.

Ted

Could you advise which valve and what I should replace it with please?

Thanks

Can I mix the sentinel X100 and leak sealer?


Thanks

 

[kittedup]

It's the brass fitting at the end of the 15mm pipe which is t'd off the cylinder circuit. (In the first pic, at the very top)

Why are you adding leak sealer?

Ted

 

[pop80_uk]

It's the brass fitting at the end of the 15mm pipe which is t'd off the cylinder circuit. (In the first pic, at the very top)

Why are you adding leak sealer?

Ted

Thanks
Could you recommend an automatic bleeder thing?

Also was going to pour it into the header tank after draining it. I have a couple of radiators I think have pin hole leaks

Thanks!

 

[kittedup]

http://m.screwfix.com/p/bottle-air-vent-15mm/34359

If you've got pin holed rads your better off replacing them to be honest. Leak sealer should really be a last resort for hidden/hard to get to leaks.

Ted

 

[pop80_uk]

http://m.screwfix.com/p/bottle-air-vent-15mm/34359

If you've got pin holed rads your better off replacing them to be honest. Leak sealer should really be a last resort for hidden/hard to get to leaks.

Ted

Ok, I will ask plumber to replace. I do think we might have s hidden leak though as well

Can this be left in the system and mixed with sentinel x100?

Thanks

 

[Scarum]

If you have a hidden leak this could be where air is being drawn in to the system. No idea where the leak may be? Why do you think there's a leak somewhere?

Try the pump at speed 3 for a few secs then down to 1... wait and repeat. It might push the air up and out.

Though it's not the cause of your air issue I'd fit the Spirotech filter on the boiler return pipe, if at all possible. Could be done when you change the rads.

 

[pop80_uk]

If you have a hidden leak this could be where air is being drawn in to the system. No idea where the leak may be? Why do you think there's a leak somewhere?

Try the pump at speed 3 for a few secs then down to 1... wait and repeat. It might push the air up and out.

Though it's not the cause of your air issue I'd fit the Spirotech filter on the boiler return pipe, if at all possible. Could be done when you change the rads.

Thanks

I think we have a air leak somewhere as the radiators need bleeding every other week

Can I mix the two sentinel products?

Thanks

 

[Scarum]

If you have a hidden leak this could be where air is being drawn in to the system. No idea where the leak may be? Why do you think there's a leak somewhere?

Try the pump at speed 3 for a few secs then down to 1... wait and repeat. It might push the air up and out.

Though it's not the cause of your air issue I'd fit the Spirotech filter on the boiler return pipe, if at all possible. Could be done when you change the rads.

Thanks

I think we have a air leak somewhere as the radiators need bleeding every other week

Can I mix the two sentinel products?

Thanks

With corrosion and pin holes in the rads it might be hydrogen sulphide, not air. Does the gas smell of rotten eggs?

Sounds like your system needs a powerflush as well as new rads.

 

[pop80_uk]

If you have a hidden leak this could be where air is being drawn in to the system. No idea where the leak may be? Why do you think there's a leak somewhere?

Try the pump at speed 3 for a few secs then down to 1... wait and repeat. It might push the air up and out.

Though it's not the cause of your air issue I'd fit the Spirotech filter on the boiler return pipe, if at all possible. Could be done when you change the rads.

Thanks

I think we have a air leak somewhere as the radiators need bleeding every other week

Can I mix the two sentinel products?

Thanks

With corrosion and pin holes in the rads it might be hydrogen sulphide, not air. Does the gas smell of rotten eggs?

Sounds like your system needs a powerflush as well as new rads.

Nope gas is not smelly. Thanks

 

[pop80_uk]

If you have a hidden leak this could be where air is being drawn in to the system. No idea where the leak may be? Why do you think there's a leak somewhere?

Try the pump at speed 3 for a few secs then down to 1... wait and repeat. It might push the air up and out.

Though it's not the cause of your air issue I'd fit the Spirotech filter on the boiler return pipe, if at all possible. Could be done when you change the rads.

Thanks

I think we have a air leak somewhere as the radiators need bleeding every other week

Can I mix the two sentinel products?

Thanks

With corrosion and pin holes in the rads it might be hydrogen sulphide, not air. Does the gas smell of rotten eggs?

Sounds like your system needs a powerflush as well as new rads.

Nope gas is not smelly. Thanks

Can I mix the two sentinel products?

Thanks

 

[pop80_uk]

I'd swap out that manual air vent for an auto one first.

Ted

Good evening all,
Can I just inquire does an open vented system need a AAV? Everything I have read seems to point to.

All advice welcome,

Thanks