Noisy Radiators after & before adding Sentinel x800

[brooky_agb]

Hi Folks,

I've had 2 litres of sentinel x800 in our 21 rads for a week now and some are still noisy and crackle when the heating comes on but stop after about a minute or so.

This wakes me up at 5am every day.

The x800 seems too have made no difference. Do you think its air? The problem is no air comes out the radiators aside from one that fizzles at you with a mixture of air/water coming out. The problem it is never stops!! Mainly water comes out and I don't want a great mess.

What should I do? Replace the noisy radiator? Is there a better method to bleeding?

I don't think this is caused by expansion/contraction of pipes. Its definitely inside the radiators.

I've been messing with this damned heating for two winters now. It has a brand new boiler too.

 

[londonboy]

Have you drained and cleaned the 800 out?

 

[brooky_agb]

Nope... I suppose I should. :S

I'll do that and post back. I suppose if it dislodges stuff it needs to come out to stop the noise.

The problem is it drains out really slowly.... I think it doesn't actually fulsh it out.

I might attach a hose to a radiator filling kit I have and flush it out from an upstairs windows after its drained.

The neighbours will think I'm mad.

 

[londonboy]

(don't quote me, I'm a spark)

I beleive the x800 is corrosive/acidic and can do damage if its left in for a long amount of time. It is intended for use with a powerflush machine, and then flushed out afterwards. x400 is more suitable to leave in the system for a number of days/weeks.

You need to drain down and clear the sludge out, and refill and add x100 inhibitor.

 

[brooky_agb]

Looks like I'll be doing that first thing in the morning then. Thanks folks!!

Please don't leak in the nigh central heating!?! I'll be forced to live outside with the chickens.

 

[MJN]

Please don't leak in the nigh central heating!?! I'll be forced to live outside with the chickens.

At least you'll have a chance of being warm!

Mathew