22mm Gas reduced to 15mm?

[Dan Robinson]

How many kW is the cooker?

 

[muggles]

Current gas installation sounds absolutely fine from a gas supply point of view. You'd only need to replace the tee and the 30cm of 15mm pipe though, not the whole lot.

I'm still intrigued as to why you're changing the boiler

 

[Agile]

The Potty Performa style of Main has been about from about 2000.

Whilst I always consider them totally repairable, many engineers like to pretend they are beyond repair and persuade the customer that they need a new boiler.

 

[Dan Robinson]

​

 

[muggles]

How many kW is the cooker?

It'd have to be about 35kW to exceed the carrying capacity of 5m of 22mm, even accounting for elbows

 

[TCCHeating]

How many kW is the cooker?

It'd have to be about 35kW to exceed the carrying capacity of 5m of 22mm, even accounting for elbows

What's 35 plus 24 muggles?

59kw on a 5m 22mm pipe with elbows etc?

 

[Dan Robinson]

Depends on the number of bends, but an average freestanding cooker, with a 24kw combi, with say 4 elbows is giving a 0.89 drop if my guess is correct ( on the sofa watching the Simpsons..... Can't be bothered to with it out

 

[Dan Robinson]

Max 6 elbows?

 

[Great500]

Current gas installation sounds absolutely fine from a gas supply point of view. You'd only need to replace the tee and the 30cm of 15mm pipe though, not the whole lot.

I'm still intrigued as to why you're changing the boiler

It is basically a 22mm gas pipe which reduced to a 15mm pipe just before it enters the boiler and cooker.

 

[muggles]

How many kW is the cooker?

It'd have to be about 35kW to exceed the carrying capacity of 5m of 22mm, even accounting for elbows

What's 35 plus 24 muggles?

59. OK smartypants, so that doesn't allow for very many elbows, but I was more making a point than anything else - nobody is actually going to have a 35kW cooker in their house

 

[Dan Robinson]

Do you have to start sentences with "basically"?

 

[TCCHeating]

Current gas installation sounds absolutely fine from a gas supply point of view. You'd only need to replace the tee and the 30cm of 15mm pipe though, not the whole lot.

I'm still intrigued as to why you're changing the boiler

It is basically a 22mm gas pipe which reduced to a 15mm pipe just before it enters the boiler and cooker.

We already know that. Basically what everyone is saying is that your installer is correct in what he says. Just make sure that he has accounted for the cooker in his pipe sizing calcs

 

[TCCHeating]

How many kW is the cooker?

It'd have to be about 35kW to exceed the carrying capacity of 5m of 22mm, even accounting for elbows

What's 35 plus 24 muggles?

59. OK smartypants, so that doesn't allow for very many elbows, but I was more making a point than anything else - nobody is actually going to have a 35kW cooker in their house

I know. I know. Just teasing muggles

 

[muggles]