Problems with boiler leaking water

[aggis]

could muck get into an auto air bleed valve and create a drip as a prv can?

Yeap! it's possible, but very unlucky if that happens on 1st fill, the system mush be really dirty!!

 

[stevetheplumber]

why fit an auto vent and then close it? a manual vent would be sufficent if it only needed doing at service intervals most mi's state leaving auto vents open half a turn or similar the only time ive seen instructions to close an air vent is on a boiler with two fitted where one can be closed after filling

 

[Lancashire Lass]

Thanks for all the advice everyone! This at least gives us a few ideas/suggestions to run past the company we've got the maintenance contract with.

 

[diesel_ltd]

if an automatic air vent is left open to expel air on a sealed system this can cause the system pressure to drop too low for the boiler to fire up.

I understand where some of yous are coming from about an automatic valve remaining open to expel air from the pump but if the system is vented correctly, flush and treated you will get very little air in the system so you should close the auto vent and then a sealed system becomes just that sealed

 

[Blackcatgas]

if an automatic air vent is left open to expel air on a sealed system this can cause the system pressure to drop too low for the boiler to fire up.

I understand where some of yous are coming from about an automatic valve remaining open to expel air from the pump but if the system is vented correctly, flush and treated you will get very little air in the system so you should close the auto vent and then a sealed system becomes just that sealed

So why dont the manufacturers just fit a manual valve?.

 

[migoplumber]

why not ring a manufacturer and ask ?
i always leave mine open, but havnt really thought about the above points before.
think i will still leave mine open, because that is what they were designed to do.
same as putting aav's anywhere else in a cct.

 

[diesel_ltd]

i would say they fit and automatic vent to make sure you get all the air out of the system while you are commissioning the appliance i but should be closed after commissioning to pervent pressure loss or leakage hence sealed system

 

[mrlennie]

I think the guys are doing their best and you should chill out things don't always go our way I feel for you though probably just feel for them more though.
They know that it's not good for business the way things have went and they will be more stressed out about this than you BELIEVE me.

 

[diesel_ltd]

good point mrlennie as plumber/heating engineers we do try our best at all times but we are human and sometimes things dont always go our way first and the best thing for you to do as a customer is remain patient and i'm sure this engineer will get it sorted

 

[Lancashire Lass]

Trust me, we know that plumbers/heating engineers are only human and sometimes things aren't that easily resolved. I think that we are being patient and giving them an opportunity to get it sorted. My husband and I both know that they'll be as keen as we are to get this one resolved once and for all.