Hot answers tagged

108

Stop, turn off the gas, ventilate the house, and hire a pro. If you applied teflon tape to a flare fitting, you are NOT the person to be installing your gas range. You fundamentally don't understand what you are doing, and doing this wrong can blow up your house. That tends to impair the "learn from your mistakes" method of learning. This is not the place ...


25

Repeating the comments : Do NOT use any pipe dope or tape on flare connections . They are metal to metal seals and anything on the metal sealing surface can cause a leak. Pipe threads (tapered) require dope/tape to get a good seal. I analysed a house fire once and the primary cause was a leak caused by dope on a flare fitting.


24

You should be able to tell by the color, and connections used. Gas "Black pipe" is commonly used for natural gas, and is dark grey/black. All connections will be threaded. Water Water lines come in a variety of materials, some of the most common are. Copper This will be um... copper, in color. While there are other ways to join copper pipes, the most ...


24

The actual amount of combustion air - i.e., air flowing past the burner to provide oxygen and leave with less oxygen but more CO2 and possibly other combustion byproducts - is very little. The gap allows additional air to flow in and the combined air, if the ductwork is designed and installed properly, flows through the ductwork and out of the house. If you ...


13

This is a draft diverter. If the heater was connected directly to the chimney, the hot flue gas would rise, creating draft in the heater. While that is a good thing, the amount of draft would depend on the particular chimney configuration in that installation, amongst other things. Excessive draft can cause problems, such as too much air being drawn ...


12

manassehkatz covered a lot, but the simple answer is constant air flow The draft will change in the chimney as exhaust vents towards it – especially when going from cold air to hot. A draft hood is placed above the upper most part of the gas furnace to draw air into the chimney and makes it possible to draw more or less air through the chimney as ...


11

Gas leak A gas leak could be deadly not only due to inhalation, but also as an explosion hazard. Carbon Monoxide Carbon monoxide is an silent killer. It's colorless, odorless, tasteless, and can kill you before you know you're dead. Combustion Air If the home is sealed tightly, and a source of makeup air is not present (for example if the source is ...


10

What is happening is called product of combustion. Somewhere around in the house or near the house someone used or opened some sort of stain, paint, varnish or comparable compound including cleaners. The molecules carry over and get mixed in with air and then burned off from open flame. If you light a candle or a lighter you will smell the same odor, ...


10

I suspect you actually have two questions: 1) Does it meet current code, and 2) Do I have to do something about it. My understanding is that in most places you can't do anything new with lead gas pipe, BUT there's no obligation to upgrade old service as long as it's working OK. My understanding is that most places won't even let you replace lead pipe ...


10

Water heaters have a dip tube on the cold water side that puts the cold water into the bottom of the tank. If water pressure is lost on the cold water side, the tank can siphon down through the cold water inlet till it reaches the bottom of the dip tube. Then since there's no water in the tank to absorb heat, the dip tube can melt and the tank can be damaged....


8

Some of the more advanced thermostats will track how often they are running. I have a Filtrete Wifi-Enabled Progammable Thermostat. It gives you a per-day total of how often the heat and A/C are run. You can also download an hour-by-hour export of the usage in CSV format. I am in no way affiliated with this company. It is simply a product I have ...


8

There are two types of tubing most people think of, when you say "flexible gas tubing". The first and more common, are flexible gas connectors. These guys are typically 3-6' long, and are used to connect appliances to the gas piping. They are only to be used as a short link between the fixed piping and the appliance, and so are considered a "connector" and ...


8

WARNING: Furnaces are expensive, complex pieces of equipment. If you don't have the proper tools and/or knowledge, it's often best to let the professionals handle maintenance and repair. Gas Furnace Ignition Sequence: Thermostat calls for heat. Pilot gas valve opens. Ignition control starts (spark or glow). Pilot gas ignites. Flame sensor detects pilot ...


8

The elbow looks good, but what happens after that seems to be a mess. Circled in red appears to be a flared adapter, which is connected to the valve using far too much dope to tell exactly what's going on. I'd assume by the large amount of dope, that it's the wrong type of fitting. Circled in orange appears to be a galvanized steel nipple, which has tape ...


7

Do you have the manual for the thing? I've done a little poking around (I even found a bunch of parts diagrams at Sears website), and I'm getting the impression that it's got a spark ignition system, not a pilot. Is the range plugged in? Is there any chance that the circuit it's on has tripped it's breaker? I've got a cooktop with a spark ignition system, ...


7

Your question concerns me. I'm a general contractor and have had many new heating systems installed for customers and have NEVER had this complaint from anyone. As a matter of fact, I just had a complete change over from oil to natural gas done at my private home two weeks ago. I have never smelled any residue from cutting oil used to thread pipe. My sub ...


7

According to National Electrical Code, the pipe has to be bonded. However, it can be bonded using the grounding conductor serving the equipment that uses the gas. ...The equipment grounding conductor for the circuit that is likely to energize the piping shall be permitted to serve as the bonding means... As for lightning strikes, the gas company is ...


6

Your flue should always be open when the fireplace is operating. It is a fire and smoke risk to close the flue while the fire is lit. When not burning, the flue should be closed to prevent heat loss.


6

Get the 220v outlet while you can. With that wiring, you can run two 110v circuits in the future or install an electric oven if you change your mind. Running another line in the future would be much more difficult, so now is the time to have it installed. The only change you'll likely have to make is replacing the double breaker with two single breakers if ...


6

Corrugated pipe is generally intended only to be used as the last connection to an appliance, in a living space where it not vulnerable to banging or jostling (usually behind or in a space at the bottom of an appliance), but where it can be seen and accessed if work is being done. It is not intended to be buried in a wall, where it could be pierced by a ...


6

Before the use of pressure relief valves, homeowners were always urged to shut off the gas or electricity to a water heater which has the water cut off. The reasoning was simple: When the water heater came on to heat up its reservoir, it would cause the water to expand, and therefore pressurize, to the point where the tank or a pipe would rupture. As long ...


6

Bad thermocouple - it is supposed to sense the presence of a flame, and turn off the gas if it is on, but nothing is getting hot. Last one I replaced was less than $10 at home depot, it is held in with only a screw or two, and less than an hour of work, including the beer after fixing my friends water heater. Looks like this, they are pretty much universal....


6

Grounding Electrode System You're going to have to install a grounding electrode system. This is typically done by driving two ground rods spaced at least 6' apart, and connecting the rods together using a properly sized bonding jumper. Then you'll install a properly sized grounding electrode conductor, from one of the ground rods back to the main ...


6

Everyone else is right. It’s supposed to be a metal-metal seal, so tape won’t do anything. Glue or caulking would not fix it, and trying to welding it or solder it won’t end nicely. Basically, Either the seal or a thread is damaged and you should get a professional to fix it. If not, your leak could not only destroy your home and possibly your neighbor’s ...


5

Most furnaces have an AC component that is powered on when it is running. Put a ac clock in parallel with this. For up to 12 hr this will tell you the time the device is running. Other types of timers will go for longer. Most furnaces run at two speeds stop and full.


5

The standard pressure test for new natural gas or propane pipe in my area (NW Oregon) is something anyone can do. Same for installing the gas line. (Why are there so many naysayers on a DIY forum? This is not rocket science:   Just a few new skills to learn.) Before installing the gas pipe, I consulted with a pro (paid $80 for an hour of onsite ...


5

Gas appliances tend to use a thermocouple (which is a self-powering device) to keep the gas valve to the pilot light open. This means that the light will not go out when you turn off the breaker. Thermocouples are pretty interesting - learn more on Wikipedia here.


5

As Tester101 mentioned, a flexible hose is not suitable for concealing in the wall. Similar to plumbing that is in the way, the pipe needs to be re-routed and moved. Depending on your location, this might be something that is permitted by the home owner or it might require a licensed technician to complete. Unlike water where a small leak is unlikely to ...


5

Time to call a professional; either a plumber or the local fire department. They can use more sophisticated leak detectors to pinpoint the leak, and know how to do so safely. Leaking gas is not something to trifle with. Liquid leak detectors (the type that bubble up when gasses are leaking) are great for simple threaded connections, but you've got a whole ...


5

Around here (Pacific Northwest), electricity is inexpensive and gas is reasonable too. However, over the last five years, gas prices have declined and will continue to do so and electric has crept up slowly and probably will forever. Almost all houses here have electric dryers and every single rental (house, apartment, condo) is only electric, even those ...


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