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Post by wingnut on Feb 11, 2019 22:16:35 GMT
That’s a small budget. The boiler that you replace it with does the same job. Probs 2% more efficient if that save your money is my advice. Good boiler. Put it on a service contract/ insurance 1500 for the boiler and extra for fitting, I’m definitely getting a service contract with the new one (when we get it) 1000 would get me a 33kw duo-tec |
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Post by boilerdoktor on Feb 12, 2019 6:53:39 GMT
£1000 would get you a lot of boilers but then other costs are
new flue
timeclock and room stat
does the system need a flush ? Approximately 400
is the boiler being moved?
does the gas pipe need changing to 28mm
can the condenser just run outside or do you need a condenser pump
this is all on top of normal Labour just changing the boiler. The internet is great to give you price of a boiler bit there’s a hell of a lot more things involved that’s why I’m saying 1500 is cheap. I was charging that for a straight swap ten to 15 years ago
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Post by wingnut on Feb 12, 2019 6:57:27 GMT
£1000 would get you a lot of boilers but then other costs are new flue timeclock and room stat does the system need a flush ? Approximately 400 is the boiler being moved? does the gas pipe need changing to 28mm can the condenser just run outside or do you need a condenser pump this is all on top of normal Labour just changing the boiler. The internet is great to give you price of a boiler bit there’s a hell of a lot more things involved that’s why I’m saying 1500 is cheap. I was charging that for a straight swap ten to 15 years ago True, The boiler is running and with regular maintenance it’ll probably run for a lot longer, long term I’ll probably swap it out I’ve got a room stat It’s been flushed as per the video linked in this chat Boiler will be staying in original position Gas pipe is already 28mm Condense won’t need pumped |
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Post by battle1066 on Feb 12, 2019 17:53:29 GMT
£1000 would get you a lot of boilers but then other costs are new flue timeclock and room stat does the system need a flush ? Approximately 400 is the boiler being moved? does the gas pipe need changing to 28mm can the condenser just run outside or do you need a condenser pump this is all on top of normal Labour just changing the boiler. The internet is great to give you price of a boiler bit there’s a hell of a lot more things involved that’s why I’m saying 1500 is cheap. I was charging that for a straight swap ten to 15 years ago Is this jump in supplier pipe size (within the home) to make up for the reduced size of incoming gas supply (street main), as plenty boilers work first class with a 15mm supply, as long the street supplier is old school size not this new micro size mains in-comer? |
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Post by boilerdoktor on Feb 12, 2019 18:59:24 GMT
None of the new stuff will work on 15mm. Think the only one I’ve seen work was a 12 kw ri
22mm min all the way to boiler, anything over 32 kw I do in 28
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Post by battle1066 on Feb 12, 2019 19:34:11 GMT
None of the new stuff will work on 15mm. Think the only one I’ve seen work was a 12 kw ri 22mm min all the way to boiler, anything over 32 kw I do in 28 So if that's the case are they making every home a storage device at your own expense? |
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Post by tomplum on Feb 12, 2019 19:43:23 GMT
I have a baxi 105 combi, it has a 15mm pipe from the meter, I never bothered upgrading it, i thought. " I'll suck it and see " never had a problem with it, according to the figures it cannot produce 12 litres per minute, but it does, I'm not saying every boiler would work on 15 mm, it all depends on bends, lenght of pipe, meter type and boiler make, But there is a load of bullshit sprouted on the gas courses to justify the prices they charge,
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Post by dickpuller on Feb 13, 2019 7:41:56 GMT
On Gas Carcass & size of same, the gas supply from the meter will in a lot of cases supply more than the boiler.
But like Tom I’ve left 15mm pipe on the gas supply to a new boiler on a combi swop, but I always check the pressure drop meets the boiler manufacturers requirements that are stated in the MI’s.👍
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Post by glowbug on Feb 14, 2019 1:24:17 GMT
On Gas Carcass & size of same, the gas supply from the meter will in a lot of cases supply more than the boiler. But like Tom I’ve left 15mm pipe on the gas supply to a new boiler on a combi swop, but I always check the pressure drop meets the boiler manufacturers requirements that are stated in the MI’s.👍 Very politically correct DP, however , some boiler manufactueres are fuckwits, at one point some ( unamed german manufacterer) used to state , inlet working pressure of 13mb is 👍 I raised this with them ,( now it says 17mb) I said excuse me german boiler maker, you say your boiler is good to go at 13mbar?? Yes thats right(a regional mangaer no less) 👻 I replied, you are only allowed a 1 mbar drop from meter to appliance otherwise its at risk, a solicitor would have a field day. As you are basically stating workjng pressure at meter is ok at 14mb, His reply was”what solicitor would ever spot that?!” A bloody good one I said, the reply was like a silent wind 🧐whistling that went on for an long long time👻😂😂 |
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Post by DIYDafty on Feb 14, 2019 17:37:42 GMT
At risk of annoying one or two gas engineers (although I hope I don't) they make checking it look as easy as building a blue peter model out of double-sided sticky tape. Interesting that this link (google found) is a uk link. www.wonkeedonkeetools.co.uk/gas-testing-equipment/how-to-use-a-gas-test-gauge-to-check-the-pressure-of-appliances/Out of interest what is the risk with the pipe size. I mean if the pressure drop was huge (say 5mb) because you had very long small gas supply pipe with plenty of elbows what could happen? My total guess is that a modern boiler would just shut down and refuse to operate but an older boiler might do something worse - maybe not burn properly and release CO? |
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Post by glowbug on Feb 14, 2019 19:01:10 GMT
You right DD, its dead easy to test. Thats why I went into the industry. Why work like a ni... coalminer to make money🧐
The point made about MIs is that they sepercede gas regs, but what if they a fuckwit ?😂boiler maker?
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Post by dickpuller on Feb 14, 2019 19:05:33 GMT
On Gas Carcass & size of same, the gas supply from the meter will in a lot of cases supply more than the boiler. But like Tom I’ve left 15mm pipe on the gas supply to a new boiler on a combi swop, but I always check the pressure drop meets the boiler manufacturers requirements that are stated in the MI’s.👍 Very politically correct DP, however , some boiler manufactueres are fuckwits, at one point some ( unamed german manufacterer) used to state , inlet working pressure of 13mb is 👍 I raised this with them ,( now it says 17mb) I said excuse me german boiler maker, you say your boiler is good to go at 13mbar?? Yes thats right(a regional mangaer no less) 👻 I replied, you are only allowed a 1 mbar drop from meter to appliance otherwise its at risk, a solicitor would have a field day. As you are basically stating workjng pressure at meter is ok at 14mb, His reply was”what solicitor would ever spot that?!” A bloody good one I said, the reply was like a silent wind 🧐whistling that went on for an long long time👻😂😂 There’s always been a point of contention between boiler manufacturers & the Regs regarding the permissible working pressure drop GB. Most pre-gas burners work with only atmospheric pressure leaving the Gas Valve, so a squirrel’s fart of gas is all that’s required in most cases. I’ve had cases where I’ve had joint site visits with ‘engineers’ who take one look at a 15mm gas supply to a 24KW combi & screem ‘cowboy install’ & cap it off. However, IF they’ll have a joint visit, BG are reluctant for some reason, they soon get shown how a reall Tradesman knows his onions, they should fuck off back to their 6 week course & their trolley collection job done Asda!! |
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Post by glowbug on Feb 14, 2019 19:22:47 GMT
Absolutely on the money dpuller😎👍
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Post by DIYDafty on Feb 14, 2019 19:32:47 GMT
You right DD, its dead easy to test. Thats why I went into the industry. Why work like a ni... coalminer to make money🧐 The point made about MIs is that they sepercede gas regs, but what if they a fuckwit ?😂boiler maker? Just to say I didn't mean to make out it was easy - just that link makes it sound easy. For a dafty like me, there's every chance I'd end up cocking it up somewhere even if I know the theory. I'm getting a bit better as I age and being respectful of all jobs helps (especially around gas which so far I've done nothing with and maybe won't ). |
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Post by dickpuller on Feb 14, 2019 19:34:30 GMT
At risk of annoying one or two gas engineers (although I hope I don't) they make checking it look as easy as building a blue peter model out of double-sided sticky tape. Interesting that this link (google found) is a uk link. www.wonkeedonkeetools.co.uk/gas-testing-equipment/how-to-use-a-gas-test-gauge-to-check-the-pressure-of-appliances/Out of interest what is the risk with the pipe size. I mean if the pressure drop was huge (say 5mb) because you had very long small gas supply pipe with plenty of elbows what could happen? My total guess is that a modern boiler would just shut down and refuse to operate but an older boiler might do something worse - maybe not burn properly and release CO? Dafty, that link is a clear demonstration of how wrong Internet Shit is & how you can never fully trust these sorts of things. Believe me when I tell you it takes a lifetime of training, knowledge & experience to know what’s safe on gas installations. Even the best are learning every day. Gas should not be touched by DaftyDIYers. We can’t disclose the ‘dark arts’ to anyone!!! |
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