Twin flue options

[GQuigley67]

Evening folks

got a boiler replacement starting next week, existing boiler vokera with twin flue system, not sure how long the flue run is I would say around 6m or so, not had a proper measurement yet.

Customer wants worcester 30si, their vertical is max 6m.

If if is over 6m, what other options do I have? (Decent boiler not tat)

Changing boiler location not possible.

 

[Chalked]

Will you be able to access all the flue?

 

[ShaunCorbs]

up it to 80/125 then your max is 15m

 

[Last Plumber]

Vaillant

 

[GQuigley67]

up it to 80/125 then your max is 15m

Sounds like the way to go, cheers.

 

[GQuigley67]

Will you be able to access all the flue?

Yes

 

[tamz]

29 cdi classic can do 7.9m horizontal or 9.4m vert.
Deduct 1.5m for every 90º and 0.75m for every 45º
Will work out cheaper than using 5" flue

Btw water output is the same 11l/m