Welcome to the forum. Although you can post in any forum, the USA forum is here in case of local regs or laws

View the thread, titled "Viessmann external flue run conundrum" which is posted in Gas Engineers Forum on Plumbers Forums.

mutley racers

Esteemed
Plumber
Gas Engineer
Subscribed
Hi all. Hope you have all been keeping well.

A while back I decided I only wanted to fit one brand of boiler and decided on Viessmann due to space for servicing and changing parts if ever needing to. I am finding my decision rather hard due to the different clearances on flue runs and cupboards to other boilers. Now I want to replace a 16yr old ecotec pro with a flat roof terminal which is adjacent to a window. Vailliant require 600mm which the current one is. Viessmann require 1000mm. Now I would need to run a flue externally up past the window and above the roof with a different terminal. Viessmann have an external flue kit which is 3 fittings and costs over £200! Anyone fitted one and know what this kit does? Any way, it makes it extremely expensive.

Now looking around, Atag give you 600mm and Baxi give 300mm clearance. What's the crack?

Rant over
 
You sure about vaillant as last time I looked it was 1500mm to a window and 600mm to
the edge / builders opening eg side so face on eg flue to window 1500mm vaillant would be

Eg c on the flueing diagram
 
Just looked at baxi there 1000mm as well eg s on theres
 

Attachments

  • IMG_8714.png
Providing the terminal is more than 300 away from the opening of a window eg bottom of the window / builders opening

Tbh I would still use c on that as read notes 1-2
 

Reply to the thread, titled "Viessmann external flue run conundrum" which is posted in Gas Engineers Forum on Plumbers Forums.

We recommend City Plumbing Supplies, BES, and Plumbing Superstore for all plumbing supplies.

Weekly or Monthly Email Digest

Back
Top