Ideal Logic boiler flue

[Bee1985]

Hello,
I hope everyone is well.
I am hoping someone can help me,
I have spent many hours researching.

Im due to have a lean to catio built (cat-patio), very much like a carport. The boiler flue is on the wall where the catio will be built.

What options would you recommend?
Eg: Is there a way of extending the flue? So it can either feed through the catio roof or sit slightly above the roof but entend it vertically?

I have looked at the ideal heating Hugh-Level plume kit and noticed the air inlet is in the elbow, are there any clearance regulations for air inlet distance from a sloped roof?

My boiler is a Ideal Logic Combi 30 (GC no: 47 348 57)

The catio will be 3sided timber frame which will have wire meshed all around & from ground to roof, with no closed sides.
The ceiling wont be closed off or sealed as it will be Corrugated polycarbonate sheets.
The roof will be slightly sloped and each wave at the edge of the corrugated sheets/roof will allow air flow(I hope this make sense lol)

I have been told that the catio would come under the regulations for a carport, as its not a closed building.

I have included some photos of catios, catios that have been fitted with flies near them, photos of my wall & flue and also some examples of the idea I have in mind regarding my flue.

 

[kidgreen61]

I would have thought that could be solved using a plume management kit as in pic 5, you'll need a gas bod to install it .

 

[Bee1985]

The engineer that came out today said its best to have the plume kit fitted slightly above the catio roof.
He said that the clearance between the air inlet elbow on a plume kit and a sloped roof or combustible materials is 25mm, Is this correct?

He also mentions a 500mm clearance between the air inlet elbow to the flue terminal.
300mm from the flue terminal to the sloped roof.

He explained that the flue terminal is the part which the plume/smoke exits from (exhaust)
Is this correct?

I’ll add a screenshot of what he showed me and a photo of the plume kit for my particular boiler

 

[Justin Passing]

The boiler Manufacturer's instructions rule. If they are silent on a matter then Normative documents apply. (BS etc)

The clearance of 25mm is probably the fire thing where the flue passes through the roof. It seems odd that it applies whether it's the hot tube or the air-carrying part of the flue but that's what they say so there it is. Boilers come with a rubber seal that fits snug to a flue, so they must be thinking that's not combustible - there's a grey area there.
It is solidly up to your installer to get it right. I expect the manufacturer will talk to you though, I always found them reasonable as long as they're assured you aren't going to do the work yourself.
If an installer wants an extra heat-shield or something however, respect his judgment.

 

[Bee1985]

The boiler Manufacturer's instructions rule. If they are silent on a matter then Normative documents apply. (BS etc)

The clearance of 25mm is probably the fire thing where the flue passes through the roof. It seems odd that it applies whether it's the hot tube or the air-carrying part of the flue but that's what they say so there it is. Boilers come with a rubber seal that fits snug to a flue, so they must be thinking that's not combustible - there's a grey area there.
It is solidly up to your installer to get it right. I expect the manufacturer will talk to you though, I always found them reasonable as long as they're assured you aren't going to do the work yourself.
If an installer wants an extra heat-shield or something however, respect his judgment.

No part of the plume kit will be passing through the roof. The air inlet part of the plume kit will be slightly above the roof.

 

[Justin Passing]

No part of the plume kit will be passing through the roof. The air inlet part of the plume kit will be slightly above the roof.

ALL parts of the plume kit are defined as flue, unless it expressly says otherwise in the MI. Ideal used to be strictest on that. They may have relented.
Thou shalt not use common sense!

 

[CountryFan]

If yours won't be any higher than the yellow outline on photo 1 and have 300mm clearance then afaik you don't need to do anything

 

[Bee1985]

ALL parts of the plume kit are defined as flue, unless it expressly says otherwise in the MI. Ideal used to be strictest on that. They may have relented.
Thou shalt not use common sense!

The image is from Ideals MI

 

[Bee1985]

If yours won't be any higher than the yellow outline on photo 1 and have 300mm clearance then afaik you don't need to do anything

Between the current flue and yellow line there isn't 300mm clearance

 

[Justin Passing]

It appears to be clear, to me. If it's not, to you, why not? An RGI would be clear having dealt with the same a lot.

There's a bit in a BS about snow, which isn't covered there, is all I can think of offhand. Consider snow a foot deep. Blocked air inlet => carbon monoxide.
ALL documents have to be respected including recent guidance notes from the GSR people or anyone relevant, building regs etc., not just the MI. That's why you need an RGI - he would be familiar with the latest regs. But call Ideal for a chat.

 

[Bee1985]

It appears to be clear, to me. If it's not, to you, why not? An RGI would be clear having dealt with the same a lot.

There's a bit in a BS about snow, which isn't covered there, is all I can think of offhand. Consider snow a foot deep. Blocked air inlet => carbon monoxide.
ALL documents have to be respected including recent guidance notes from the GSR people or anyone relevant, building regs etc., not just the MI. That's why you need an RGI - he would be familiar with the latest regs. But call Ideal for a chat.

If plume kit fitted there would be a sloped roof and just over 150mm between Air inlet and the start of the roof

 

[gas112]

300mm clearance required from where the flue exits the building and the roof of catio this is incase of snow why not leave a couple of foot square section out of that part of the roof and you do not have to alter anything