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Aug 10, 2013 · Todays' condensing boilers of whatever ilk require a greater gas flow rate than older boilers. The only way to achieve that is to upsize the pipework - normally from 15mm to 22mm. There are two choices. Do it outside the building or do it inside the building.
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Oct 19, 2014 · The boiler itself has a 22mm inlet for gas, plus the length of the 15mm gas pipe was approx 3.5 metres back to the gas meter tee. I questioned him about this and he said he'd checked and the boiler would get enough gas and it would be OK, but on my insistence he changed the run to 22mm.
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Jul 20, 2010 · 15mm from the meter has never been acceptable, regs stated 22mm to within 1 metre of appliance. Basically you have know about pipes, sizes, appliance gas rates etc - it's not as simple as just connecting up. If incorrect pipe size is used - if you have a gas fire, oven or hob and the boiler comes on, the other appliances could be starved of gas.
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>> The supply to existing boiler is 1/2" steel pipe. >> I'm told that I need to have a 22mm supply for a new condensing boiler. >> The routing of existing pipework cannot be followed without demolishing >> about half of the interior of the house. I'm not willing to do that. >> >> Would it be legal to run the majority of the pipework in armoured
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In terms of gas boiler installations in existing homes, the government has proposed putting an end to this by 2035. There is no need for existing homes with gas boilers to get rid of them, and when your existing gas boiler needs replacing, you can replace it with a new gas boiler.
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condensing boiler gas supply is 15mm ok | DIYnot Forums. 7/14/2008 · condensing boiler gas supply is 15mm ok. Hi Gents can you please answer a question for me, we are having our old combi boiler replaced with a new condensing combi. The old gas supply to the boiler is 15mm and we have been told the supply needs to be in 22mm? Online Chat Email
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Jun 02, 2018 · Well that was a waste of time. Installers turned up but only with a basic vertical flue kit. We decided that moving the boiler closer to the garage door would solve that. But then they discovered that the gas supply pipe was too thin (it's only 15mm to the boiler). So that was that - installation cancelled.
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Sep 03, 2019 · DIYnot Forums. Home Forums > How to > Plumbing and Central Heating > 15mm supply on gas inlet on Greenstar 24 Ri. Discussion in 'Plumbing and Central Heating' started by Rupinder, 4 May 2015. Having an oversized boiler reduces the efficiency as a result of excessive cycling.
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Dec 23, 2020 · "A condensing boiler is one of the most efficient types of boiler. This is because it is able to recover virtually all the heat from the flue gases and use this to heat your home. For the boiler to work at its most efficient, the heat exchanger needs to be equal to or below the dew point temperature.
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But to tell you the truth, with radiators, I would not hesitate recommending the gas condensing/modulating boiler like the GB-142 over the oil boiler. But it depends on what else the boiler will be heating, like domestic hot water, fin tube baseboard, fan coils, etc. Use the Find a Pro feature on this site to find a good contractor to help you!
Get priceDec 20, 2021 · The boiler you have is 80,000 BTUs - equivalent to 23.4 kW. This is the heat output of the boiler, but it needs 29.3 kW of power to get there, which means it is about 80% efficient. To achieve 23.4 kW of output heat it requires a certain amount of gas to be burned, and this needs to be supplied at a pressure of 13.9 mbar.
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Nov 29, 2010 · Nonsense! The analysising of gases at flue has nothing whatsoever to do with gas supply pipe. Most modern boiler require 22 mm SUPPLY pipe although one or two will run off of 15mm supply. All boilers will run off 15mm but not as efficiently as …
Get priceDec 24, 2021 · Heatline Solaris 24PC/30PC Pre-mix Condensing Combination Boiler of the Installation manual, must be left with the end user and the relevant sections completed on each subsequent Service visit. 24 - Manual air vent A - Heating Flow (22mm) B - D.H.W. Outlet (15mm). · Comments heatline vizo 24 manual this Manuals Your Name.
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I have gas fired boiler laars mini therm jvs model and when one zone calls for hest boiler makes sound like plane passing by over the house but when two zones are calling for heat boiler runs fine snd the noise goes away. Do i have flow issue. Any advise is appreciated. On Kefid - …
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May 21, 2007 · The pipe work between your side of the gas meter the boiler/combi' and the gas cooker/hob should be in 22mm pipe work. Time and time again I am coming across new or relatively new installs where the pipe work from the meter is left in 15mm, this is not acceptable.
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Removal/replacement of gas fire with back boiler - MyBuilder. 2020/1/4 · Replacement options & costs Back boiler servicing When you can repair your back boiler The original back boilers had a gas fire on the front, the Baxi Bermuda was by far the most popular model and many are still operating today.
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The Fagor FEB-24ED is wall hung, room sealed, fan assisted, microprocessor controlled, fully modulating gas combination boiler for providing both central heating and domestic hot water. 7 4 3 2 FEB-24ED 1 5 6 1.-Pressure gauge 5.-Orange light.
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Feb 10, 2016 · 15mm copper supply to boiler sounds strange, I thought 22mm supply was the standard? Trust. This allows the return temperature to be as low as possible. Condensing boilers only condense when the return temperature is under 56c, if you have the flow temperature set at 70-75c, like many older systems run at, the return temperature will be
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Gas pressure has to be tested at the meter and the boiler. If OK at the meter when the boiler is on, then is it OK at the boiler. Before the new district governor was fitted, the gas rate pressure may have been too high, hiding the undersized pipe problem.
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Worcester Bosch state that the gas supply pipe should be no less than 22mm in any circumstances. All Greenstar boilers have a gas inlet of 22mm. Vaillant boiler gas pipe sizes. Most Vaillant boilers are designed to be fitted with a 15mm gas inlet pipe, where it connects to the boiler, although the ecoTEC Exclusive 843 combi is 20mm.
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condensing boiler gas supply is 15mm ok page 2. 170condensing boiler gas supply is 15mm ok | DIYnot ForumsThe old gas supply to the boiler is 15mm and we have been told the supply needs to be in 22mm? Is this correct? If so the gas pipe runs underneath the bathroom flooring to where the Believe it or not i have found that by reading responses
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Jun 02, 2018 · Well that was a waste of time. Installers turned up but only with a basic vertical flue kit. We decided that moving the boiler closer to the garage door would solve that. But then they discovered that the gas supply pipe was too thin (it's only 15mm to the boiler). So that was that - installation cancelled.
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Apr 04, 2007 · I'd say if gas pipe is longer than 3m, then upsize the remainer back to meter in 22mm. as you mentioned also depends on what else is supplied, also on the length, & compplexity of pipe run. Vaillant only say " the gas supply must give the boiler 17mbar minimum when boiler is on full rate" spacer frame : is this included with the boiler or an extra?
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Jan 22, 2019 · For natural gas boilers, the dew point is around 55C. In other words, the water in the return pipe needs to be 55C or lower or your boiler will not operate at …
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Mar 08, 2008 · 15mm gas pipe for boiler Page 3 DIYnot Forums - Hdpe 15mm gas pipe for boiler Page 3 DIYnot Forums It never causes the boiler a did not include any bonding of incomer gas pipe to then LPG boiler or gas fire. system that had a coal-converted-to-gas boiler and old fashioned radiators.
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In terms of gas boiler installations in existing homes, the government has proposed putting an end to this by 2035. There is no need for existing homes with gas boilers to get rid of them, and when your existing gas boiler needs replacing, you can replace it with a new gas boiler.
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Sep 02, 2008 · Condensing boiler - any views. I need to replace our heating boiler and as our hot water supply is fine as is so am not inclined to get a combi as gas pipe sizes are ok for condensing but not combi boiler. I would like any views positive or negative on the Ideal Icos 24HE condensing regular boiler or the Potterton HE 80 condensing boiler
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Oct 06, 2018 · The boiler is designed to provide a level of comfort while keeping gas consumption and the resulting environmental effect as low as possible. The gas supply to the burner is controlled according to the level of demand for heat. The boiler continues to operate with a low flame if the demand of heat reduces.
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Sep 03, 2019 · This boiler may not have been hyper-efficient, but it has served our heating needs perfectly. Trying to get quotes for a straight replacement - or a condensing equivalent - but some chaps have told me vaguely that the 15mm gas supply is inadequate and would need upgrading to 22mm. If this is necessary, I'd like to be confident why.
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Dec 05, 2019 · Just that section of 15mm pipe (including a few elbows) will result in the maximum permitted pressure drop let alone the rest of the gas carcass. Your new boilers manufacturer will void the warranty if the gas pipe is incorrect, and of course you new building control notice (if he actually notifies) will be pointless.
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I am planning to upgrade my mid efficiency boiler (Slantfin) to either a Bosch Greenstar boiler or combi boiler, or a Navien combi boiler. Last Dec (2017), I received two quotes to install a Bosch, about Cdn $11,800 to $12,000. In Sep 2018, a different installer indicated that a Navien boiler will cost about Cdn $5,900.
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Jul 14, 2010 · The Baxi Duo-Tec is an excellent boiler. Try googling DIYNot, MSE or the Screwfix forum for some impartial advice. Never had a callback on a single one of them Do NOT buy the W-B junior range, they are the cheap contract model, the CDI is more expensive but far superior. But, hey, Seacam is the acknowledged and undisputed expert here
Get priceJun 04, 2013 · I'm just about to convert my CH system from Y plan to S plan. Currently I just have a 15mm gate valve bypass in the airing cupboard and that is shut as I don't have TRVs on all rads. The guy who installed my boiler said that was fine, just open it enough to hear a bit of water flowing. However
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Oct 14, 2014 · Boilers are different sizes if you had a 15kw boiler 3 meters away from the gas meter you would be fine but if you had a 37kw boiler 3 meters from gas meter you would not with a 15mm supply.
Get priceA combi boiler works differently, by heating the water instantly, meaning it needs a larger volume of gas for a. 15mm gas pipe for boiler Page 3 DIYnot Forums. Aug 23, 2011 · they will beed to upgrade the gas pipe from its current 15mm to 22mm as most new condensing boilers, be it system or combi, require a 22mm pipe to supply the correct gas
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Jan 31, 2018 · According to Gas Safe regulations, a 22mm supply pipe must be fitted from the combi boiler to the meter. So, if you have an old 15mm pipe, it must be replaced. Now I don't know why they say a 22m supply pipe must be fitted if a 15mm supply pipe is adequate for the job.. but that's regulations for you.
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Jul 14, 2008 · DIYnot Forums. Home Forums > How to > Plumbing and Central Heating > condensing boiler gas supply is 15mm ok. Discussion in 'Plumbing and Central Heating' started by wennners, 9 Jul 2008. Page 1 of 2 1 2 Next > wennners. Joined
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All condensing boilers have a condensate pipe, which acts as a safe route for harmful gases produced during boiler operation to leave the boiler and your property. Should a blockage prevent these gases from escaping through the condensate …
Get priceOct 22, 2012 · New Combi Boiler with 15mm gas supply. I'm a little concerned, I have always been advised that for a combi you need a 22mm gas supply. I've just had a worcester combi installed and the gas registered fitter located the 22mm in the ground but from the wall up it is 15mm. Therefore there is approx 1.5 meters where the gas supply is connected with
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