Recently, the thermostat (simple mercury switch style) stopped turning the fireplace on as it should. A thermopile is an electronic device that converts thermal energy into electrical energy. 1 x Long Thermocouple. How to Change a Thermocouple in a Heatilator Fireplace Turn off the gas to your Heatilator fireplace. The thermocouple lasts for 10 years or more, and when it fails, the pilot won't stay lit and the fireplace won't work. The way it works is when the thermophile/generator gets heated it produces millivolts. We would need to know a little more about the gas valve (model number) and the application that this product will be installed with. It is composed of several thermocouples connected usually in series or, less commonly, in parallel. In heating systems a thermocouple is one junction of metals that when heated by a pilot flame generates approximately 25 mv and holds open an electromagnetic valve to allow gas to pass as long as there is a pilot. This electricity is used to hold the pilot valve and main gas valves open when the pilot is lit or the fireplace is in operation. A thermophile produces electrical current to operate the gas valve. A thermopile is an electronic device that converts thermal energy into electrical energy. Quick View. I have a 11 year old Napoleon natural gas fireplace (GDS20N). Thermocouples operate by measuring the temperature differential from their junction point to the point in which the thermocouple output voltage is measured. Disconnect the thermocouple line from the gas line with a wrench. A typical application is flame failure. Once the pilot light is extinguished, the voltage drop triggers a valve shutting off gas … Set the gas control to pilot lighting setting and light it per the manufacturer’s instructions. Connect the red positive lead to the red thermopile wire, and the black lead to the white wire. Cleaning the thermocouple is a pretty simple process but should only be done when the fireplace is turned off and is completely cool. Price $33.27. ... $134.98. You may have to wiggle it a bit before it comes loose. Easy online ordering for the ones who get it done along with 24/7 customer service, free technical support & more. Checking your thermopile for a fault is a simple DIY solution as to why your gas fireplace wont function, but if the above steps don’t work you may need to call a technician to fix your issue. A gas fireplace thermocouple is often found among contemporary gas fireplaces. Other Reasons for Gas Fireplace that Won’t Stay Lit. It is used for ensuring safety of the ignition system and preventing fuel leakage. This small amount of voltage is sent to the wall switch. Most gas fireplaces have a start-up mode to allow heating of the thermocouple. The thermopile is a related device that you should test at the same time -- its function is to open the gas to the burners. Apart from a faulty thermopile and thermocouple, other possible reasons include: Add To Cart. The thermopile is used with 750 millivolt pilot systems. A thermopile generates electricity from the heat of a pilot light. The thermocouple on your gas furnace is a heat-sensitive device that transmits a small electrical signal to the gas valve to keep it open when the pilot is on. Hi Everyone, Can someone tell me the difference between the Thermocouple and the Thermopile and what their functions are exactly. Replacing the thermocouple is quick, and something you can easily do yourself. Quick View. It is composed of several thermocouples connected usually in series or, less … Grainger's got your back. 99 Open the maintenance hatch below or to the side of your fireplace. clear. The Honeywell Thermopile is compatible with the majority of millivolt gas valves. I have been repairing commercial kitchen gas appliances full time since 2006 and have never seen both used in the same piece of equipment. The thermocouple on a gas fireplace may eventually become clogged with dirt and soot, which can reduce the effectiveness of the thermocouple and may eventually prevent the fireplace from lighting as expected. Gas Type. A thermocouple is an electronic safety device. The thermopile is a related device that you should test at the same time -- its function is to open the gas to the burners. It does not have the two leads of the thermopile, nor the single tube of the thermocouple.It just has a single connection to CN4 on the controller. A thermopile generator generates electrical energy from heat. Looking for ROBERTSHAW Pilot And Thermopile, 90 Degree Right (2EWG1)? SIT 820 Series Millivolt Fireplace Valve 30% Turndown Natural Gas. Applicable gas: natural gas / liquefied petroleum gas. A thermopile is an electronic device that converts thermal energy into electrical energy. In a gas water heater, gas fireplace or gas stove a thermopile generator produces voltage while a pilot light is lit. Thermopile & Thermocouple Pilot Assemblies. i get no v reading on the wire connectors so I am assuming the sensor needs to be replaced. 750mv Thermocouple for Heat Glo Heatilator,Fireplace Thermopile Replacement Fireplace&Stove Accessories for Fire Gas Stoves Heat&Glo Gas Stoves Oven Water Heater&Frying Furnace (24", Aluminum) 4.4 out of 5 stars 434 Universal Thermopile, 24" long 750 millivolt for use in gas fireplacesCross ReferenceArchgard: 308-0056 / TP-38Astria (IHP): H5882 / 60J79 / 60J7901Avalon (Travis Industries): 98900752 / 93006519Coleman: 104499-01Comfort Flame: H5882 / 60J79 / 60J7901 / 88J53Comfort Glow: 104499-01Continental: W680-0004 / W680-0004 / W Seems like a waste of money/parts. The thermocouple on your gas fireplace is a heat-sensitive device that keeps the pilot gas tube open while the pilot is lit. Quick View. Quadrafire FAQ, quadrafire fireplace, Quadrafire gas stove, quadrafire thermocouple, thermocouple, thermopile What is the difference between a thermocouple and a thermopile? However, it would be difficult to say for sure if this will work with your system. I have just replaced the thermocouple and thermopile on my heatilator gas fireplace. Application areas: gas ovens, gas grills, gas boilers, gas … Q335 The Honeywell Q335 Thermocouple is a quick dropout thermocouple that generates 30mV. After replacing the pieces however, the pilot will not light now. The pilot was working just fine before but the fireplace itself would not stay lit. The Honeywell Q313 Thermopile generates 750 mV, which is sufficient to operate an automatic millivolt gas control system, independent of any outside power source. Thermocouples on heating appliances: this article describes thermocouples, safety devices used on gas fired heating equipment. Applicable gas: natural gas / liquefied petroleum gas. This article explains what a thermocouple (or thermopile) is, how these devices work, where they are installed, and what goes wrong with thermocouples. A gas fireplace thermocouple is a safety device that measures heat and recognizes if a pilot light has gone out, shutting down the fuel supply (such as gas or propane). It is composed of several thermocouples connected usually in series or, less commonly, in parallel.Such a device works on the principle of the thermoelectric effect, i.e., generating a voltage when its dissimilar metals (thermocouples) are exposed to a temperature difference.