dave1967

Ok they came out. Said water in expansion tank is not always an issue with viessmamm 100. It was pressured up again with a pump. Prv was ok. Not sure what else he did but said it was not set up correctly for external control which he fixed. Not Sure how that was the main issue as it been fine for 10 months but seems ok now and no pressure loss. So all good.

Viessmann doing it next week under warranty after I explained the issue. Cheers all

Will do. Cheers

The grey drain hose drips but i believe it is shared with the condensate drain so im not sure.

Thanks but i don't get a pressure increase.

Maybe, just insure why im osing pressure when inam ot getting the telltail high pressure associated with u/s expansion tank.

Ok. Still loosing pressure and water present in the expansion tank when shreger valve tested. Dont have any high pressure issues apparent as is normal. I think something may have happened in the summer as shower wouldn't get warm one morning an found the system pressure was zero from about 1.3 bar a few days before.

Ok. Still loosing pressure and water present in the expansion tank when shreger valve tested. Dont have any high pressure issues apparent as is normal. I think something may have happened in the summer as shower wouldn't get warm one morning an found the system pressure was zero from about 1.3 bar a few days before.

Thanks

Thanks. Is the 15mm elbow ok?.

Good evening. I had the boiler installed last year and have been losing pressure on the heating side without any trace of leaks. Also had two overnight drops in ch water pressure causing the boiler to fail to operate about 4 months ago. I have removed the condensate line tonight to see if it could be a passing valve. Ive noticed i have a 15mm bend to the boiler from 22mm gas supply which i believe may be undersized. The flue also drips as it is not angled correctly . Does anyone have similar issues with this boiler or suggestions. Thanks

Evening all I have permission for balcony over my kitchen extension. Currently i been doing a bit of prep work as it had a flat roof originally but was turned into a pitched and tiled roof at some point in the 70s. I have now removed that as it was not fit for purpose and it looked a diy job. Currently got a 6x5m epdm installed on 18mm osb on 19mm t & g floorbords all in good cond from original build. 9x3 joists at 400 centers. Looking to float a qwickbuild or similar ali structure to support a deck. I have been told that these systems can only support balustrades up to 600mm off ground level without further structural support due to building regs. I dont want to compromise the epdm and don't want to fix the posts to the walls as they just don't look secure. Im happy to inset the post a couple of feet in and loose some space. Any ideas if a a 6x3 or similar timber frame around the deck fixed one end would be acceptable to support the posts.

Thank you both for this.

Viessmann say preheating pre boiler is a no so need a new plan. I am not sure of the benefits of having an unvented tank after the boiler.

Thanks Nick. Plenty to think about there.