replacing a gas hob

The ignition system on our old (probably 20 years) gas hob has failed and we've been using matches. I've seen some in shops that look about the same size, so I'd expect to be able to disconnect the old one, unscrew it, and drop the new one in. From the last time I rummaged around under the oven (which is under the hob but completely separate from it, and not gas-connected), I think it the hob has a flexible gas line coming down to a bayonet or similar fitting. Is reconnecting this suitable for a DIY job? Are the fittings likely to have changed over the years?

Also, I noticed that most --- but not all --- of the ones I've seen in shops say "flame failure" on them. Are they not all required now to cut the gas off if the flame gets blown out?

Thanks, Adam

Reply to
Adam Funk
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More likely that was the oven connection. Hobs have to be "hard plumbed" as I understand it.

As ever, only if you're "competent".

Tim

Reply to
Tim Downie

I'm pretty sure the gas hose is not for the electric fan oven. ;-)

"Competent" in the usual sense, or trained & qualified to do gas work?

Reply to
Adam Funk

Outlawed since 2004 apparently.

Competent means competent. You don't need a qualification unless you're charging for your work.

Suggest you do some googling. Here's a good place to start.

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might be a few years out of date though.

Tim

Reply to
Tim Downie

My brother mentioned that to me at the weekend, and I said "what, can't plug in a bayonet hose any more? My gas service plumber has never mentioned that" It was only when I got home that I remembered he only has a gas hob, not a gas cooker. Is it correct that a freestanding gas cooker should be (has to be? is allowed to be?) connected via a hose and a fixed gas just-a-hob must be connected by fixed piping?

JGH

Reply to
jgharston

Which bit of

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did you = not understand?

Tim

Reply to
Tim Downie

Can you please point me to what has outlawed the use of a flexible house if (i) the hob's manufacturer states that is a suitable method and (ii) the hob is not fitted over an oven (and not anywhere else that might lead the hose to come into contact with temperatures over 70)?

I'm asking from ignorance rather than knowledge because it was a method I'd had in mind if we ever get around to re-doing the kitchen and I thought others had said that it was OK in such circs..

Reply to
Robin

I'm only quoting from section 4(a) of this.

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dare say someone will be along to quote chapter and verse.

Tim

Reply to
Tim Downie

Flame supervision devices are required on cookers and hobs installed in flats, multiple tennancy buildings and the like. There is no requirement as yet to fit these in in houses, semis,town house etc.

Flexi hoses can be fitted to hobs if manufacturer's instructions do not forbid it.

Here is a quote from BS 6172

A gas hob shall be connected to the termination point by means of rigid pipework or, unless stated otherwise in the manufacturer?s instructions, a flexible connector and self-sealing plug device conforming to BS 669-1. Connections for a free-standing cooker shall be by means of a flexible connector for use with a self-sealing plug-in device or rigid pipework.

--- Posted via news://freenews.netfront.net/ - Complaints to snipped-for-privacy@netfront.net

Reply to
Heliotrope Smith

"As of autumn 2004 it is no longer acceptable to supply a fixed hob with a flexible connector."

Akh, B**Ks, didn't read that far, just searched for "hob". Slapped wrist accepted.

JGH

Reply to
jgharston

Hard plumbed unless otherwise directed by the manufacturer's installation instructions.

Reply to
John Rumm

I thought I'd read all about it here before and have now found the relevant thread with expert words of interpretation from John Stumbles and Ed Sirrett on successive editions of BS 6172. The key words seem to be:

11.1.3 A gas hob shall be connected to the termination point by means of rigid pipework or, unless stated otherwise in the manufacturer?s instructions, a flexible connector and self-sealing plug device conforming to BS 669-1.

But the full thread's here for reference

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Reply to
Robin

If the manufacturer's instructions specifically say that you may use a hose then you may (in accordance with whatever they say); otherwise it would not be considered an 'approved fitting' (because hoses are generally intended for appliances such as slot-in cookers and tumble- driers which can be moved) and the Gas Safety (Installation and Use) Regulations prohibit use of non-approved fittings.

There's probably more in BS6891 about hoses but it's late and I cba looking it up.

BTW I have a different take from Ed (makewrite) and others on the 'competent' business, which I've written about on my wibble (below - under DIY gas or something). Regardless of interpretation however, in the case of the OP I'd guess not.

Reply to
YAPH

Yup, unless manufacturer either requires or allows otherwise.

Reply to
YAPH

I had a look in BS 6172:2010 version, and it has the wording:

"11.1.3 A gas hob shall be connected to the termination point by means of rigid pipework or, unless stated otherwise in the manufacturer's instructions, a flexible connector and self-sealing plug-in device conforming to BS 669-1."

which seems to be the inverse of what I originally understood. i.e. use rigid unless explicitly directed otherwise.

Not much that I could see.

Reply to
John Rumm

Certainly to me is it reads as, "Take your pick unless the manufacturer specifies one particular method".

Tim

Reply to
Tim Downie

That makes sense, thanks. I'll check the hobs' documentation before picking one. In this situation, I'd strongly prefer one that can be connected with a flexible hose because I think installing fixed piping might require taking the oven out for access.

I like the Cistern Chapel artwork (and the page showing how it was done)! Interesting content too, thanks.

I wouldn't try to do gas pipe myself. I'd feel confident about reconnecting flexible hose to the existing fitting while dropping in a hob in the same place as the old one. (I'll probably buy a new hose if the hob didn't come with one, since I don't know how old the current hose is.)

Reply to
Adam Funk

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