Installation of Chinese gas wok cooker

[adam1998]

Hi guys, I hope someone can help me out here. First of all let me say that I am only 16 years old, and I have just started my apprenticeship in plumbing, so as you can expect not a lot of knowledge but I am willing to learn and hopefully one day I'll become a very good plumbing engineer. One of the plumbers looking after me, has just given me a task which he knows is a bit too much for someone who just started, but I want to show him that I will find the answers and with your help guys I hope I do it, at the end of the day that's is how I'll learn things by trying to find the answers.

Ok, in about a week or two he have to install a Chinese type gas wok cooker in a restaurant, basically he have to replace the old one, so he showed me the cooker and said this to me:

1. Ok, take a closer look at the cooker and tell me if you think there is anything wrong with the plumbing?

2. Then he said: Ok we have a 15mm water and a 22mm gas pipes that are currently connected to the existing old cooker. You need to tell me what parts/components do we need to connect the new cooker (it's not brand new actually, it's reconditioned)?

So first I looked at the cooker's plumbing underneath and I have to say them small tubes look a bit untidy, I've looked at the joints and most of them have the jointing compound, although some of hem feel a bit loose. First when I looked at the valve I thought I would need a 28mm to 22mm coupling reducer, but on the actual valve it says 1" and when I measured it inside it was almost 30mm internal diameter, so I guess the 28mm coupling won't work, although I have looked everywhere and can't find 30mm to 22mm reducer?

Please take a look at the images on the address blow where you'll get the idea of what exactly I am talking about.

hthweb.com/cooker

I would highly appreciate if somebody can give me advice on that.

Many thanks.

P.S. I'll be ok with the water connections, but puzzled with the gas.

 

[Riley]

Hey buddy and welcome along. Stick around here whilst you're training there is a wealth of knowledge for pretty much most questions.

Sadly though we are unable to offer gas related guidance from a safety perspective. I'm sure you understand. Over the Internet it's very easy for someone to find diy info and kill themselves. you might be who you say but that doesn't stop Mr Smith finding the info and thinking that he doesn't need a gas safe engineer and causing himself or others harm.

Couple of alternatives would be get your gas safe plumber to register on here or alternatively get your post count up to 100+ then you can get in the plumbers arms section where we are happier to discuss things re training and learning.

 

[Dotty]

As Matt said, welcome along.

We have very strict rules about giving gas advice on open forum, we don't do it.

This isn't because we want to keep the knowledge to ourselves, far from it, but because of people reading this forum in the background who could quite easily kill themselves by misusing or misunderstanding the information posted.

However we are keen for you to learn and equally keen to help you.

Stick around kiddo, get your post count up to 100 then we'll see what we can do about getting into the plumbers arms where we can open up and help you a lot more.

BUT! Because you're underage you'll only be getting lemonade and a bag of crisps. Oh, and you might get conscripted as a potboy.

We sacked the last one, kept finding him under the table, drunk.

 

[stevetheplumber]

the waqter is floated ontop to keep the surrounds cool due to the heat output these need huge amounts of gas which will necessitate big pipework

 

[Dotty]

You'll also probably find that because they want a very fierce flame you'll be asked do do things to the gas supply that you can't legally do.

 

[oz-plumber]

Prior to installation, I would be looking at what was done to 're-condition' the appliance.
I would also be asking for some documentation stating that the appliance has been re-conditioned to the original manufacturers specifications.

Personally, if someone asked me to install a re-conditioned commercial wok burner, I would have some reservations

 

[adam1998]

Thank you very much guys, I understand what you are saying and I appreciate your time. I won't be installing it though, my mentor will, mine is just the theoretical part.

 

[Stanios]

Blimey two weeks into my apprenticeships I havnt touched the blowtorch, was on the broom duty! Good going kido!

 

[adam1998]

I think I find the solution, it is 22mm to 1" fitting, so basically the 1" male side of the fitting get screwed into the 1" valve on the cooker, and into the other 22mm end goes the 22mm copper gas pipe with a compression fitting.

 

[solutions]

I think I find the solution, it is 22mm to 1" fitting, so basically the 1" male side of the fitting get screwed into the 1" valve on the cooker, and into the other 22mm end goes the 22mm copper gas pipe with a compression fitting.

So that resolves mechanically connecting the existing pipe work dimension of pipe to the appliances valve but how do you know the size of pipe is appropriate for the appliance?

 

[adam1998]

So that resolves mechanically connecting the existing pipe work dimension of pipe to the appliances valve but how do you know the size of pipe is appropriate for the appliance?

Because there is an existing cooker that has been fitted there for many years, I don't know the exact fittings on the existing cooker, but if that cooker was working with the 22mm gas supply, why not the new one? I don't understand, why does the size of the gas supply pipe matters, surely if let's say for example all the gas pipe work in the place is 22mm from the gas meter, so it doesn't make sense because of one new appliance to change the size of the gas pipes, so what happens to the other appliances that do need o have 22mm? Or is not a problem from bigger to smaller, but from smaller to bigger?

 

[solutions]

Never assume. Do the calculations and confirm what the pipe size should be.

 

[adam1998]

How do I do this calculation?

 

[Dotty]

Getting into the realms of too much gas info being divulged.

Thread closed.