how does a fireplace gas valve work

The valve does exactly what it sounds like, it controls the amount of gas flowing to create a steady flow without allowing any gas to leak. The control valve regulates the pressure and the amount of gas that is supplied to the unit. The thermocouple generates about 20-30 millivolts, enough electricity to keep the part of the gas valve that controls gas flow to the pilot assembly open. This is also why it stops releasing gas if the pilot light goes out. This valve is similar to the thermocouple only valve, however has a pilot which heats up . The thermopile, like the thermocouple, is a temperature sensor that generates electric voltage. Fortunately, most gas fireplace issues require nothing more than a little troubleshooting. First post here.... Been battling my furnace for the past month. Everything was working fi... American Standard/Trane Ignitor comes on, gas valve clicks, then fails to light. This creates a higher temperature. - YouTube Sometimes the original plumbing of your gas fireplace puts your valve in an inconvenient spot, especially if you've renovated the room. The valves are always closed unless something opens it. This prevents gas from flowing into your home when the fireplace is not lit. 09 Oct How Gas Fireplaces Work with an IPI vs. Milivolt Ignition System. Questions of a Do It Yourself nature should be The piezo ignitor is usually connected to a button that generates a spark when depressed. $23.99 $ 23. They offer convenience and safety, with sealed combustion systems that protect indoor air quality by drawing outside air for the fire and expelling 100% of combustion exhaust and byproducts outside the home. Too much pressure could result in fires or explosions. The pressure is important. Today's gas fireplace sets are a bit more sophisticated and can be installed in standard or "ventless" fireplaces, may include remote controls and come in sizes to fit any fireplace. It gives off both radiant and convected heat and provides an experience similar to … The piezo ignitor is usually connected to a button that generates a spark when depressed. This is another relatively small piece of your fireplace that converts heat to electricity, ultimately opening up the gas valve when you turn on the fireplace. If the temperature is not reached, the valve will cut off the supply. This prevents potentially deadly gas from sitting around and escaping in to the environment. The thermopile is basically just a large thermocouple, but instead of generating 20-30 millivolts, it generates up to 900 millivolts, enough power to ignite the main burner when the wall switch is turned on. In the fireplace, that is. Gas Valve. No Ignition. The old gas valve was hidden and defective so they called me to make it work. If you need to know the specifics, here is a brief overview detailing how the control valve functions. We welcome your comments and This replacement on/off gas valve … How To Remove And Replace A Gas Fireplace Valve Read More » These sensors contain material that creates a small amount of voltage when heated. The limit for a unvented gas fireplace valve is forty thousand BTU's regardless of the size of the fireplace burner. Ensure that it is screwed in tightly and in the correct position. If you’re using a fireplace key and your fireplace has a front cover, remove it completely and set it aside to access the burner. Gas fireplace won’t stay lit, but the pilot light does. Too little pressure will not allow the proper amount of gas to be ignited for the appliance to operate. The piezo ignitor is usually connected to a button that generates a spark when depressed. The most common type of gas fireplace uses a millivolt ignition system. The thermopile is basically just a large thermocouple, but instead of generating 20-30 millivolts, it generates up to 900 millivolts, enough power to ignite the main burner when the wall switch is turned on. submitted to our "DoItYourself.com Community Forums". The pilot flame heats both the thermocouple and thermopile sensors. The thermocouple generates about 20-30 millivolts, enough electricity to keep the part of the gas valve that controls gas flow to the pilot assembly open. View our Privacy Policy here. If your fixture comes with 1 of these valves, make sure to move it until the handle sits parallel to the gas line, allowing fuel to enter the … How to Replace the Gas Control Valve on ... How to Replace the Gas Control Valve on Your Furnace. Gas fireplace repair how to replace a gas valve on a gas fireplace. Get it as soon as Mon, Jan 4. There are straight gas ball valves and angled gas ball valves. Check the breaker box and reset any tripped breakers you run across. Before the remote can work, the master switch must be in the “On” position on the fireplace. Readers want to know how to troubleshoot gas fireplace problems. The control valve regulates the pressure and the amount of gas that is supplied to the unit. If you've installed a large mantel, or tiled over your fireplace, the valve may need to be moved. This is also why it stops releasing gas if the pilot light goes out. The pressure is important. DoItYourself.com®, founded in 1995, is the leading independent As you can see, the hearth serves as a protective heat shield for many components within and near the fireplace. The most common gas appliance found in US homes is the hot water heater, although the valve serves the same purpose for heating systems and stoves as well. This is why the pilot stays lit on its own after the initial lighting. The thermocouple is in the pilot flame which must be lit for gas to enter and if the flame goes out, this low (20 millivolt) signal goes to zero and the main solenoid valve closes cutting the gas supply off, which is a safety measure. We ran some tests and determined that the valve was stuck in the closed position. Pilot-operated gas log fireplaces incorporate a thermocouple to monitor the pilot flame and a thermopile to enable control via a thermostat or other remote device. These sensors contain material that creates a small amount of voltage when heated. The gas supply pipe into the back of the fireplace was the yellow coated flex line that all of the plumbers are using now and this line extended down to about 10 inches from the bottom of the heat-a-later and the a black iron nipple was used to extend into firebox area where a manual shut off valve was installed. A peek inside a gas fireplace. A gas control valve can be found on any appliance that utilizes gas. A gas burner sits underneath the appliance and heats the gas that is supplied. Gas logs … 4.7 out of 5 stars 140. A gas burner sits underneath the appliance and heats the gas that is supplied. The pilot flame heats both the thermocouple and thermopile sensors. How to Test if Your Fireplace Main Control…. The first gas log fireplaces were simple---just a pipe with a valve and a set of ceramic logs in a wood-burning fireplace. When your gas fireplace stops working the way it should, you might think that you must immediately call a repair person and watch your money disappear. A gas fireplace is actually a great, energy-efficient way to heat your home. Identifying All the Different Gas Furnac... Identifying All the Different Gas Furnace Parts. It makes perfect sense that direct vent gas fireplaces are the most purchased hearth systems today. to this site, and use it for non-commercial use subject to our terms of use. Thermocouple, Thermopile, and Wiring: The thermocouple is a metal probe that controls the gas valve, sensing the temperature and generating electricity to ignite the gas if necessary. suggestions. Most modern valves are 90-degree valves, which means opening and closing them is done with a simple quarter turn. When learning how to turn on a gas fireplace without a key, see if the unit has a control panel with an igniter switch. The most common type of gas fireplace uses a millivolt ignition system. Convection sends this gas up the chimney, where it is wasted. Try these suggested fixes to get your gas fireplace working normally again. The thermocouple still acts to prove that the pilot flame is on and allows this flame to continue after startup. Usually, there is a key to the side of the fireplace that controls the flame inside. How Gas Fireplaces Work with an IPI vs. Milivolt Ignition System. A solenoid valve is controlled with an electric current through the solenoid to allow/restrict the flow of gas; unlike a millivolt valve, this solenoid requires a larger amount of voltage than a thermocouple/thermopile can produce to snap open, where it makes use of latching magnets that secure the solenoid in the open position - thus, the "latching" solenoid doesn't require a constant electric … Different gas Furnac... identifying All the Different gas Furnac... identifying All the Different gas Furnac... identifying the... Does temp control in shower valve works, this isn ’ t necessarily the.. Fires or explosions or tiled over your Natural gas Water Heater the illusion of a real wood-burning.... This is also why it stops releasing gas if the pilot stays lit on its Own after initial... Some typical questions asked by readers and Expert answers radiates from the fireplace area valve if it ’ gas... Mantel, or tiled over your Natural gas Water Heater on a... how troubleshoot... 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