Once the pipe is thawed and the boiler has been successfully re-started, you can lag the pipe with waterproof and weatherproof lagging to help prevent it re-freezing. How are you all doing? For use with externally routed waste pipe when used as a boiler condensate drain. It’s sometimes very difficult to get condensate pipes across concrete floors, or under the floor due to laminate flooring or tiles. If the condensate drain pipe runs more than a metre or so externally and if it is 21.5mm in diameter, then it should be insulated. It will also be angled to ensure waste water doesn’t flow back into the system. x 25 mm thick wall x 2 m long: Length: 2 m: Size: 35.5 mm: Temperature Range-20°C to 150°C: Type: Pipe Insulation If this is an issue, a pump can be used to collect the water and pump up and over to a drain. There’s no way round it, so finding a suitable solution before installation is absolutely imperative. Again, this is filled with limestone chippings to neutralise the condensate water. (In a non-condensing boiler, this process is absent. I used this kit for a pipe run through or behind pre-installed kitchen cupboards and behind the washing m/c. For a better experience, please enable JavaScript in your browser before proceeding. 3. In new appliances, the energy in these gases is captured and used to preheat the cold water that enters the boiler. If your boiler has stopped working in a cold snap, check to see whether its condensate pipe has frozen before you call out a heating engineer. If a condensate pipe is running under a floor to connect to a drain, there are still potential issues. The condensate trap prevents toxic fumes from being expelled into the sewer. If it is connected to an external drain pipe, it will be found outside your property leading out from your boiler. Thanks for the question Mutley Racers! However, there are plenty of options. To avoid freezing, the pipe must also be lagged under the floor. Pumps with built in repellers that create a negative pressure in the pump stuffing box. The boss and I are installing a boiler tomorrow, and to be honest, the only place to install the condensate is into the rain water pipe. - Checkout our specific plumbing forum for you:USA Plumbing Forum, Discuss Condensate into rain water pipe...YAY or NAY?? In the end moved the pipework more or less inside (boiler also in the loft). If the pipe has to go outside, we now take extra measures to ensure no issues in the future. After this water has been collected, it gets expelled out the condensate pipe. Condensing boilers are designed to not only use the heat generated by the combustion process, but also the heat of water vapour content. To prevent this, a useful guide has been published by the Heating & Hotwater Industry Council (HHIC). But, it’s by no way an impossible task. Turned out there was a blockage at the bottom of the rain pipe, and all the rainwater flowed back up the condensate pipe. Finally, if a condensate pipe is taken to a rainwater pipe outside and is 32mm (1 1/4″), there must be an air break. The boiler also packed up. Thaw your condensate pipe to remove the blockage. The condensate, i.e., the water produced from the condensation process, is collected in a sump before entering the condensate trap. Tankless Water heater: Expansion tank burst. KIRKKKKKKK???? So, try not to panic! It’s usually a white or grey plastic pipe that travels from your boiler through the wall directly outside where your boiler is located. Plumbing codes everywhere address that issue. Internal condensate discharge pipework must be a minimum of 19mm ID (typically 22mm OD) plastic pipe or as per manufacturer’s instructions and this should “fall” a minimum of 45mm per metre away from the boiler, taking the shortest practicable route to the termination point. If it is in 32mm or greater then there is no need. Standards: BS 874-2:1986, BS 476-7:1997: Colour: Dark Grey: Diameter: 35.5 mm: Dimensions: 35.5 mm i.d. And the last thing you want is for that to happen in the depths of winter! I hope this blog has been helpful when finding out all you need to know about condensate waste pipes. Their drainage people seemed confused by the question, claiming that they had never been asked if before, … This is so the water doesn’t back up and flood the boiler during heavy downpours or storms etc. However, with modern solutions, the condensate water can be pumped through the pipe, meaning it doesn’t always have to run downhill. Worcester Bosch Boilers vs Ariston Combi Boilers, Review: We Reveal Just What the Vaillant EcoTEC Plus 825 Combi Boiler Has to Offer. You can then introduce an inline one way valve/trap into the 21.5mm pipe. For example, if the condensate pipe has to run through a garage. can you answer this one please lol. Boil the kettle: leave it to cool for 10-15 minutes afterwards, so that it’s warm rather than boiling. The above image shows Modulex high efficiency condensing boilers with condensate neutralisers installed in the pipes that connect the boiler drains to the point of discharge. Changed it to a wider pipe; froze again. It’s worth noting that boiler condensate can be slightly corrosive to certain materials, especially metals. in the Central Heating Forum area at PlumbersForums.net, Reply to Condensate into rain water pipe...YAY or NAY?? Lagging should also be used to insulate it. The condensate pipe is used to drain all the excess water produced from the condensing process in your boiler. That should be the other way around, the small white pipe going through the wall (21.5mm solvent weld) should be connected to the condensate pipe coming out the boiler and then the black pipe should run through the wall to connect to the stack. Valves above the water line can introduce oxygen as the velocity of the water lowers the pressure at the valve stem. This needs to be safely disposed of, within the buildings waste water system. Furnace and boiler condensate can corrode those pipes. Water vapour from the combustion process is channelled through the boiler until so much heat is drawn out of it, it condenses back into water. Happened to us a few years ago. Because metal piping cannot be used, the condensate pipe is relatively easy to identify. The condensate pipe runs from the boiler to a suitable existing waste pipe system, or external drain pipe. It should be a short length of pipe situated externally, which directly connects to your drainage system. Having gained this knowledge, we always try to keep the condensate internal, or fit a pump. Older, non-condensing models could waste up to 50 per cent of the heat produced due to gasses escaping up the flue. Prolonged periods of freezing weather can cause … It carries the ‘condensate’, which is the liquid produced when all the heat has been taken out of the gas that has burned to provide heating and hot water, to a drain. Finally, do you have any questions about condensate waste pipes when relocating your boiler? 2. Once enough heat is produced from this vapour, it’s condensed back into water form. And if the fluid sits in a pipe or a trap and evaporates, it becomes even more concentrated — and more corrosive. The hot gases are simply expelled out of the flue and the heat is wasted.) This can possibly be done through a void in a ceiling or a pipe box. You can definitely put it into a rainwater pipe if it leads to a combined drainage system, if the area has a seperate drainage system for rainwater and waste water then you can. I'd like to know a more official answer myself too. A condensate pipe carries condensation from your boiler to your outside drain. From the United States of America? The condensate pipe is a small, usually white, plastic pipe that comes out of the bottom of your boiler. A typical hour-long operation of your boiler may produce around 2 or 3 litres of the condensate water waste. No you can't sewer or a soak away officially. Required fields are marked *. If the pipe freezes during the winter then the boilers condensate trap will not be able to drain and the boiler will stop working until the pipe thaws out. No dramas. Homeowners. A condensate pipe should be 25mm+ in diameter, but many plumbers have used smaller gauge pipework that is easier to clog. It’s not good for clients, and it was costly for us having to go back to fix the issue. As with all externally-run condensate pipes, it is recommended to keep the external run to minimum and the pipe diameter to 32mm when exiting the property. It will be the only plastic pipe connected to your boiler. Boiler guy proposes running condensate pipe to the same drain that the gutters go into, because the soil stack is hard to reach from the boiler's location. You can put it in a rainwater pipe if it leads to a combined drainage system, some manufacturers state you need an external air gap though incase the pipe gets blocked. Fitting a condensate is actually quite straightforward, and there doesn’t have to be any drama. For this reason, it is advisable to try and ensure the condensate pipe, from boiler to drain, is less than 3m. I have done it if no real alternative but always cut the fallpipe and insert a box / hopper head which should allow for the occurance that Gasman states. Are you about to relocate your boiler, but worried about the fact you need to run a condensate pipe? It was an easy fix to the rigid 21.5mm boiler condensate outlet, and to a standard sink trap. Condensation inside Heat only boiler casing - a couple of questions. Due to UK legislation the pipe will typically be 22mm in diameter if the drainage system is connected internally, and may be 32mm where the pipe is drained externally. Madrab, 21 Dec 2019 #4 An efficient condensing boiler will generate around 2 litres of condensate water an hour at a temperature of around 30-40°c. This weekend it rained a bit hard, and my kitchen ended up flooded as rainwater poured out of the boiler. The installer used too narrow a pipe which runs nearly horizontally outside so the condensate liquid lies in the pipe and eventually freezes which cuts off the boiler. Condensate waste water is slightly acidic, and care must be taken as to where it is drained. How Much Should My Annual Boiler Service Cost? He said I could try disconnecting pipe from the boiler and blowing down it in case it were air stuck inside due to heavy rain. In other words, the correct distance from the property, and the correct depth down, so dampness does not come into the house. To improve efficiency, the boiler removes as much energy from the flue gases as possible and some of this waste gas cools and turns into a small amount of acidic water. Where the drain pipes from more than one unit are manifolded together for condensate drainage, the pipe or tubing shall be sized in accordance with an approved method. Oxygen is dissolved in makeup water that was added to the boiler because of condensate leaks. It may not display this or other websites correctly. Thanks for the question Mutley Racers! by John Carmichael | Jun 1, 2018 | heating | 0 comments. That’s why condensate pipes are usually made of plastic and not metal. It is possible to terminate a condensate pipe into a rain water down pipe that terminates into the foul waste system. Your boiler's condensate pipe will run directly into a drain, in most cases externally to your property. JavaScript is disabled. As an experienced engineer, I find this fear and confusion is usually completely unnecessary. You’ll never know if you don’t ask! This was a problem in the past as if it didn’t run down (fall), the water stayed in the pipe. Generally, a boiler heats water that’s delivered through copper and/or plastic (PEX) pipes inside a building’s walls and floors. They plumbed the condensate pipe under the floor and outside into the waste pipe (drop of a few feet, couple of meters long), but the drains here are not the best. You are using an out of date browser. It must also have a good fall to the drain, otherwise water will lie in the pipe and be susceptible to freezing. Is this allowed? All modern condensing boilers require a condensate pipe to run to a suitable drain. If your boiler is located quite far from a drain, it can be labour intensified. It’s sometimes very difficult to get condensate pipes … I’m here to help! This waste water is acidic and gets produced as the boiler extracts as much energy as possible from flue gases, which turns into a small amount of acidic water as it cools. Laminate or concrete flooring can be tricky. Before you can drain any corrosive liquid into the house drains, you have to neutralize it. The condensate pipe is usually a white PVC-U pipe, similar to one you may find on a washing machine or sink waste pipe which usually goes outside into a drain. Lol this is what cracks me up about this game one person says yay another says nay , end of day a bit of acidic water going down a rainwater drain is not end of world better off that than a gas leak !!! If, for example, you have an old property with a lead trap drain to an old sink, the condensate waste will burn through this within a few months. Post a job. Lagged the pipe; froze again. Pour the warm water over the pipe: start from the top of the pipe and work down until the ice has melted. I'd like to know a more official answer myself too. Flanges can have the same problem as valves. Just like many installers, when condensing boilers became popular we had condensate pipes freezing. I have put loads into rain water and never been picked up by gas safe even on inspection on contract works has never been mentioned . As long as your engineer is experienced and fits to manufacturer’s instructions, there shouldn’t be an issue. There are now even heaters that can be fitted to stop your condensate freezing. i am pretty certain you cant go into down pipes as its against building regs,but would need a copy of the regs to clarify anyway it will freeze in the winter. Landlords: Service vs Maintenance Contracts [What You’re Actually Paying For], Worcester Boiler Service Costs: A Detailed Guide. There are plenty of options, so you shouldn’t have to worry. TIP: If you know you live on a snow line or an area very open to the elements, state this to your installer. Usually your condensate pipe will be frozen on the most exposed external point, this will normally be at the end of the pipe, just below the drain or around the bend where the insulation is at its thinnest. They might even be able to advise you on other options when relocating your combi boiler. Condensate into rain water pipe...YAY or NAY?? Having fitted my fair share of condensates over the years, there are some things to know, however. What is a boiler condensate pipe? For instance, the pipe must be clipped or supported, so it will not sag with the weight of the water within. well you can put the condensate into a rainwater gully, so wouldnt it be the same thing hmmm.. Your e-mail address will not be published. Even if your boiler is to be located quite far from a drain, there are actually plenty of options available. Step-by-step guide to defrosting your condensate pipe. Cooling to this level creates water, known as ‘condensate’ which needs to be dispersed to the waste water drainage system or a soakaway. It should be ideally 32mm (1 1/4″), lagged and have a good (fall) run down to the drain. Condensate waste and drain line size shall not be less than 3/4-inch (19 mm) internal diameter and shall not decrease in size from the drain pan connection to the place of condensate disposal. If the only route is a long distance, and requires lifting carpets and flooring, it can up the cost and upheaval of your installation, and may take around 3 – 4 hours. It can be taken to the outside, run internally, or even pumped through a 10mm plastic tube rising vertically, then to a drain. Let me share the 6 most important facts about condensates with you below, so you can consider yourself clued-up. Rated 5 out of 5 by Canwefixit2 from Quick and easy to install Superb bit of kit that quickly solves condensate pipe run problems without having to run pipe externally. Smelled gas, called cadent, gas leak detected, do i need to replace the whole pipe. If the condensate discharges outside and no drain is available, a purpose made soakaway can be fitted. The condensate pipe also needs to be positioned at a gradient. It's not an overflow pipe, it's a condensate drain, it's meant to drain water. Your e-mail address will not be published. I WOULD BE CAREFUL TAKING IT INTO RAIN WATER DOWN PIPES, especially if you dont know what or where they run to,if it blocks it will back up and probably drown the boiler in a down pour,had it happen a few weeks ago on a greenstar blew the fan on that. It could be a relatively straightforward job. Essentially, a condensate pipe takes waste water away from the boiler. In nearly all of the cases of boiler breakdowns caused by the condensate pipe freezing, the condensate discharge pipe has been fitted externally to the property for some part or all of its length. Popular high-efficiency boilers tend to be more expensive at installation, but lower utility bills pay you back after time. Since the water, aka the condensate, is mildly acidic (that’s because it is a by-product of the condensed waste gasses), it needs to be drained through a … All condensing boilers have a condensate pipe which sends waste water outside and down a drain. This must be fitted to the manufacturer’s specifications. The most convenient place to drain the condensate to was a rainwater pipe. Locate the pipe: it will be a white pipe that comes out of the wall behind your boiler and runs directly to an outside drain. It does this by holding a small portion of … Let me know in the comments. Modern condensing boilers have a condensate pipe which transports acidic water away from the boiler and down a drain. Identifying your condensing pipe should be easy as it’s the only plastic pipe that is connected to your boiler. If you’ve heard stories of condensate pipes freezing or being awkward to route to a drain – or even that it may have to run across the surface of a wall from the boiler to a drain – then you’re not alone. It can be rerouted to another drain, or you can fit a PH equaliser which is a cartridge filled with limestone chippings that will fit on the pipe and neutralise the water as it passes through. However, speak to your chosen engineer, and see what they advise. I thought this was only allowed if the surface drains and sewers were in a combined system, so I phoned Thames Water to check. - Please check in each morning and let us know you are okay! in the Central Heating Forum area at PlumbersForums.net, Welcome to PlumbersForums.net - The international free. Locate the frozen blockage within the condensate pipe. So, if your condensate pipe is going to be external, ensure it’s larger than 22mm.
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