How long can a WB flue be?

[rpm]

As per the title really for my own idle curiosity.

 

[Ch4 plumbing]

They all differ mate, what Model?

 

[rpm]

The White one. lol

I didn`t look tbh. Was working in a 3 storey house today in the lower level where only the rear see`s daylight, went to use the bathroom (basically underground) and noticed the boiler which got me thinking where the hell does the flue go.

 

[Ch4 plumbing]

A WB 25/30 Si is as follows

100mm Horizontal/Vertical 6000mm

125mm Horizontal/Vertical 15000mm

Bare in mind that for every 90 degree bend minus 2000mm off total length
45 degree bend minus 1000mm off total length

they do vary a bit with each model.

 

[Ch4 plumbing]

A WB 25/30 Si is as follows

100mm Horizontal/Vertical 6000mm

125mm Horizontal/Vertical 15000mm

Bare in mind that for every 90 degree bend minus 2000mm off total length
45 degree bend minus 1000mm off total length

they do vary a bit with each model.

 

[ckyens]

The flue lengths for each WB boiler can be found in the manufacturers instruction installer manual. Best to phone WB customer technical helpline.