Flue design for greenstar 30 si boiler

[wlinton66]

Hi im fitting a central heating system for a friend, i am a plumber, and i have already paid to to my gas safe course sarting in october, my be commisioning this boiler and doing the gas connections, he is on holiday till saturday so i cant contact him for advice. Mt question is about the flue. It is coming out horizontal from the boiler, hits a 90 degree bend, goes vertical 105cm, hits another 90 degree bend, then goes through the wall to the out side. I was wondering if that design was ok. Thanks william

 

[Destroyer2813]

If you havent done your course and passed it you shouldnt be doing the job anyway

 

[wlinton66]

im only doing the system, hanging the boiler, and doing the water connections, cored the hole for the flue, but was just wondering if that was the correct design. flue position meets the regulations.

 

[heliotrope]

The boiler manufacturer give clear instruction for the flue in their
installation manual.

This is what you should be following for correct and safe fitting.

 

[wlinton66]

i am also aware that for every 90 degree bend fitted it takes off the overall lengh of the flue allowed. i am also aware that i am allowed to fit central heating systems but not the gas connetions, i can run the gas pipe te to the boiler and to the point of connection at the meter but cant make the final connections to both sources, and i cant operate the boiler until these conections are done and it has been commissioned by a gas safe registered person ie, my shadow. just looking for that advice to avoid getting slagged when he gets back,.

 

[Roger Welton]

This thread troubles me, if you're not sure then wait untill your mate returns then everything will be done correctly, within the law first time.

 

[SafeGasInstall]

pls give up the wind up , u electrician by trade ?

 

[wlinton66]

i will anyway, just curious, cheers

 

[wlinton66]

nope im definitely a plumber, just was not sure about the flue. as i need to buy either that design ive metioned or a vertical flue with one 90 degree bend . ie straight ut 105cm and then out horizontally by 58 cm

 

[snowhead]

Page 20 of the install manual.

None of the examples match your scheme.

But the table related to it gives a clue.

How big did you core the hole?

 

[wlinton66]

117 mm , is would be a 100m flue

 

[wlinton66]

i know the examples dont match wat i would like it to be, i was just wondering if the design i mentioned is the right one. either of them i mean. cheers