I’ve also recently had the gas company here testing for a leak and he said the vent wasn’t leaking gases. Simply because it hides problems like corrosion or holes developing on surface. Corroding gas water heater vent pipes should be replaced as soon as possible, to prevent possibility of exhaust fumes / Carbon Monoxide contamination. Do I just buy a round piece of metal and caulk it in? I think to myself… there’s got to be some reason the builders originally put a power vent in, so we should continue to go with a power vent. Tighten loose pipe fittings. Featured on Meta MAINTENANCE WARNING: Possible downtime early morning Dec 2, 4, and 9 UTCâ¦ Thanks for the help ! The WH was installed by a plumbing team and told that the vent was good. Around the pipes going to hot water heaters and furnaces. The fan creates a “positive pressure” and the vent system needs to be UL listed as positive pressure and sealed to prevent carbon monoxide from leaking into the home. It’s all about the design of your appliance. The dryer has its own dedicated vent pipe to the side of the bldg. The easiest way would be to put a metal cap on the top of the chimney opening with one or two holes in it (depending on which installation you’re going to pick). Okay, thanks. 2. In addition, could the Water heater be defective, (still under warranty)? It stops about 6 inches from the roof. At that connection the temp was 143 degrees. Because the power vent uses a fan motor to draw the exhaust fumes through the flue, the venting can be longer and more horizontal which will give you more location options for installing the water heater. Along the front wall, there is 8″ x 16″ vent. My newish (last 2 years) water heater as recently has been giving me some challenges. I noticed it was very hot to the touch...not enough to catch anything on fire, but still very hot to the touch. I installed it myself. Natural gas water heaters are located in the garage, exiting through the attic and the roof. Somebody will have to look at it and find a reason of that negative pressure and “vacuum” like effect HVAC system creates. Your to-do list is perfect: 1. If water is coming from the cold water supply line and the hot water pipe, you may be able to stop the leak by tightening a loose-fitting with a wrench. So, if something would normally ignite at 500F, by applying constant heat to it, that ignition point might be lowered to let’s say 250F – it’s just an example…. Do you think I still need more “vent?”, I will call manufacturer while waiting for your response : ). Along one of the 4′ sides, there is also another 8″ x 16″ vent. I saw that the white plastic rings are also slightly melted even in the picture of a properly secured vent on this website . Chimney inspection ASAP, they will tell you what needs to be done. The material is also a factor as you can’t just put silicone on stainless steel to seal it. We had a new gas water heater installed a few months ago. Without that information it’s difficult to say if what you’re doing is safe, because that additional length of the vent pipe might compromise proper drafting. Hello Curtis, Melting of the plastic ring (I’m assuming you’re asking about the water pipe union connector insulator) has not much to do with a properly secured vent / draft hood. Water heaters with power venting come with an electric blower fan (often very quiet) installed on top of the water heater and can have either vertical or horizontal vent ducts. I keep the “vent window” closed year-round and run a dehumidfier in the summer, but it’s a lost cause. I think the problem probably in condensation and/or ventilation (drafting) capacity not enough. Are there any HVAC system air return ports inside the utility closet or next to the combustion air supplying ports (if such exist)? What I meant to say was after the the first “explosion” and when the user has finished using the hot water, the WH will bring temp back to its normal temp AND the burner will stop burning. Who is Responsible for Plumbing Issues on a Rental Property? I would replace furnace and water heater vent pipes with double wall type. He suggested I add a liner to the chimney, or purchase a new power venting hot water tank. There are two other chimney ports for fireplaces, how can I direct the intake away from exhaust from the other ports (1 unused but functional wood fireplace in the middle and 1 seldom used natural gas fireplace on the other side)? Run hot water at a bathtub or laundry sink long enough to get the water heater to turn on. Normally, the vent is hot up to a couple of feet from the tank. However, if you’re using well water, city water from a local underground source (community well), or / and a water softener, you might need to replace sacrificial anode rod in your water heater tank. The installer had an alternative water heater he recommended, but it did not have a power vent. Thank you. You can go over to the manufacturer’s website or simply give them a call and ask about your particular model. Can you recommend a fix for me? You should clean the venting on gas water heaters … Thanks for the help ! Traditional gas tank water heater require venting through the roof. Natural draft gas water heater, 14 years old, vent sizes (from hood) 4″ into 6″, ~8′ into chimney. Hi Mike, The general rule for venting two water heaters into a common connector is that its diameter must be equal or more than the larger diameter vent pipe + 50% of the smaller diameter vent pipe. Without a vent, hot air can accumulate in the water heater closet and present health concerns and safety issues. Hi, my water tank is far from the water source, however is located closely at the wall corner right behind the furnace. Usually it is not – oversized chimney might cause back-drafting, condensation inside the chimney flue, CO poisoning, etc. The 5 Best Electric Tankless Water Heaters for Endless Hot Water; Enjoy Endless Hot Water ... Types of tankless water heater vent termination kits. I’ve finally found what I was looking for about chimney caps! There are no other drainage options so they are going to swap out my new unit for one exactly like the one that was in there before, which was power-vented. When it first fired the flame was “soft and blue” as described in the installation manual. Natural draft gas furnace, 24 years old, vent sizes (from furnace hood) 4″ into 5″ into 6″, L – shaped, 20′ into chimney. How do I know if I need to replace the hot water tank, or if it is venting properly. 3 Issues You Might Experience With The Old Pipes In Your Home, How to Properly Choose a Vanity to Improve Your Bathroom, I have a gas water heater . The connection between the draft hood and the vent pipe should be secured with sheet metal screws â three per connection on a single wall pipe are recommended. If the draft hood that came with your water heater has a top opening diameter designed for 3″ vent pipe, and you have 4″ vent pipe installed, use an adapter / increaser to join both of them together. Over the years it corrodes, deteriorates and sometimes falls in pieces onto the burner, which might cause problems, compromise combustion, and result in CO poisoning. Good luck with your project! Properly venting your gas water heater can help cut back your energy bills because failing â¦ Natural gas or propane hot water heaters are generally less expensive to operate than electric heaters, but installing a standard vent in a house without an existing chimney is expensive. Open all the faucets in the house and run the water in shower or bathtub until it flows steadily from them with the right water temperature. As long as the pilot is stable, the burner ignites ok, and the flame looks good do you think it is OK to operate this way until the chimney flue can be properly sized? It’s a magnesium or aluminum that is wrapped around a steel core wire rod, screwed in into the WH top plate that prevents corrosion of your tank. These power vent models come with a blower which is often extremely quiet. Where to look for gaps or holes outside your home. You’ll want to fix a water heater flue pipe leak right away because improperly vented gas appliances can cause a fire or release carbon monoxide into your home.Below are some tips on how to handle this issue. There are some rust & water stains near the water heater vent hoods. Unfortunately you’d have to make a few holes in the chimney along its length in order to install those rods. Itâs easier to run the vent if you install a âpower-ventedâ type of natural gas (or propane) water heater. It’s easier to run the vent if you install a “power-vented” type of natural gas (or propane) water heater. at the hot water tap, then you must take special precautions. In the roof among the rafters, gables, and eaves. It is installed at the top of the water heater and can be utilized in both horizontal and vertical applications. The 2nd water heater will be the same, but i want to use the same vent pipe for both. Older, less-efficient furnaces used to be vented via an exhaust pipe running to a chimney. 2. I’m sure you’ve heard this a few times, but your website/information is very useful! Hi Steven, From your description it appears that your water heater might be experiencing something similar to a puff-back. Replace the smaller size vent pipe with a proper / required size: -most 30 gallons, 40 gallons, and 50 gallons gas water heaters use 3″ diameter vent pipe, -75 gallons and more will call for 4″ and more. Go to this page: http://www.rheem.com/product.aspx?id=A1A75AAC-68F0-4C00-A8D3-37468E6D242A and open the “Use and Care Manual” pdf file (last one on the list). Thanks. Can the flue vent for water heater be taped at the sections? How to Make Natural Wood Stain Using Coffee, Berries & More! It might be the gas valve which is malfunctioning resulting in an erratic opening and closing. Under the right conditions, rain drops can enter and come down the vent. Thanks for the quick reply!!! With the gas shutoff, it’s a good thing the heating season is over so we’ll only have to do without hot water until I can get the chimney/gas appliance companies in. There might be several variations… some good and some bad of course. It’s a newer water heater with a sealed combustion chamber and for that reason you can see or hear it at the draft hood area. The efficiency of the water heater … Hi Clay, I’ve put up together a little more information about raising the water heater – Gas Water Heater Raised Above the Floor. Would that be a good sealer into the chimney? How To Instantly Reduce Typical Household Energy Consumption. Rain water inside the chimney and condensation soaks into the brick / mortar / stone surface dissolving the alkaline salts. You’re very kind Tony :-), thank you… The “white stuff” (most likely) on the vent pipes is a result of ventilation problems / possibly clogged chimney. The water heater is 14 yrs. Pipe Fittings or Connections. That metal vent on top of your gas water heater extends through your house to your roof. Problems with proper drafting, chimney conditions and combustion air issues usually cause galvanized pipes to corrode. Steps: Set the water-heater thermostat to its lowest setting, typically the "vacation" setting. Such installation could create pyrophoric conditions and a fire-hazard. Most of the time these are made out of PVC. At some point, corroded gas water heater vent pipe wall becomes very soft, and might fall apart when under even slight pressure. To avoid any frustration in the future I’d call Rheem and explain this particular situation. All SharkBite water heater connectors are approved for use on electric or gas water heaters with a flu vent. I was absolutely clueless, I had ours all wrong. Let me know if you have any other questions. If so, you are lucky to be alive and still have a house (or at least the roof). old. WH gas regulators are designed for dealing with the amount of gas provided from the gas meter / pressure regulator / gas piping. posts – several of the water heater vent pipe conditions described below depend on properly operating and installed chimney! Rainwater can be blown in from outside. While replacing it you have 4 choices. Pages 44, 45, 46 show the details of the direct vent, condensing type through the roof vent installation. Inspect the water heater flue pipe. Run a flexible liner inside the chimney to the point of termination inside the attic, connect a B-Vent to the liner and continue this double wall pipe through the roof. Basically in direct contact with the drywall. I have never noticed it like this before. 14 year water heaters are unpredictable. In your case it would be 4.5″ or more (the closest you can get is 5″). The new door is on the opposite wall. The gas supply valve is usually located on the â¦ Follow the links to skip down for more important information. We recently replaced a very drafty sliding glass door with one that is energy star, tightening the house (so much so I often can’t hear my dog barking to be let back in). Natural draft gas water heater vent pipe system is still dominating and as long as the property has favorable structural conditions and a chimney dedicated for use with gas burning appliances, you can use this type of venting. Turn off the gas supply for the gas water heater. If your closet is “air tight” and its interior provides the only combustion air source for the appliances it contains, open its doors while running HVAC and monitor your water heater’s operation. The reason you use B vent pipe for the exterior wall is that itâs insulated to prevent excessive heat. To calculate exactly the size of the required chimney diameter that will accommodate your water heater, you’d need to use Gama Tables and do some measurements of your installation. You should be able to purchase a cap designed for this purpose, they come in various diameters. He said carbon monoxide will back into the basement. This furnace / water heater vent pipe must continue through the roof and terminate above it. If you have a gas hot water heater leaking from the top, one possibility is related to rain. New construction, about 6 months old. Because of the angles in the utility closet, the water heater sits about 3-4 feet away from the exterior wall. Also, I’m worried about possible gases in the house. The top of the chimney is at least 36″ above the peak of the roof line. The ventilation system is, by design, an open system. I’m pretty sure you’re aware how dangerous Carbon Monoxide can be…. CTH Expert content attracts 2 thousand readers daily and is dedicated to answering the many questions of home owners and home buyers. Then everything seemed ok. Once the burner stopped burning and someone turned on the hot water, the small explosion by the draft hood would happen again. Braided vs. Gas must continuously run upward toward the chimney entrance to provide proper draft. Before removing the water supply tubes, verify that the water is turned off by turning on the hot side of a faucet somewhere in the house to see if water continues to flow. The venting for garage heaters can get extremely hot and B-vent pipe is insulated to keep the exterior of the pipe safe for penetrating combustible materials. Furnaceguru.com presents a video that shows how to replace a heat link inside a sealed combustion water heater. Thank you. Gas service company rep said (on phone) “water leaks from vents” indicate chimney problem. You’d need Gama Vent Tables to perform those calculations ask ask your local building department / licensed plumbing contractor to evaluate your installation. For the gas water heater vent pipe system to operate properly its Draft Hood Has to be Centered over the vent hole, and its legs must be straight – any displaced or deformed draft hoods should be serviced / replaced if necessary. It appears intact and is a relatively new water heater to boot...maybe about 2 years old. In this configuration however, the chimney section inside the house and within the attic would have to be repaired, tuckpointed, sealed, closed-off properly around the B-Vent to flex liner connection (so the connection remains within the chimney walls). The old one was just sticking into chimney (barely), and then like a mortar material around it to seal then annular gap. Chimney liner is currently required by code so if you’re performing major repairs on your chimney or replacing any of the appliances – it must be installed and appliances connected directly to the liner (rain cap is required too). Since the vent does not rely on the buoyancy of hot air, it can be run horizontally to the outside of the house. The metal baffle inside the water heater’s flue pipe has nothing to do with the smell, it’s there to deflect heat towards the tank wall and increase the efficiency of the burning process. Thanks! This is a dedicated vent pipe for the WH only. When I touch the vent today, it wasn’t hot. Inspect the water heater flue pipe. Some installation might be a significant challenge, or even become impossible, due to a water heater height and chimney flue connection level, in those cases, induced draft motor equipped water heater should be considered. The tank is 21″ in diameter with a 24″ diameter aluminum leak pan under it. Pipes are 3 1/2 inch pipe at the vent pipe our old water heater and the and... I want to use the same time when I touch the vent intact and is a turn connected through wall. 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