honeywell millivolt gas valve troubleshooting

For the battery test above only connect the battery for a second or two just to see if the gas valve works. Refer to Figs. (50/60 Hz models available on request. For a better experience, please enable JavaScript in your browser before proceeding. Failure to follow them could damage the product or cause a hazardous condition. 0000052145 00000 n WARNING!FIRE OR EXPLOSION HAZARDS CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH. TABLE 6MAXIMUM LENGTH OF SUPPLEMENTARY LIMIT LEADWIRES WHEN USING Q309A THERMOCOUPLE. 2 or 3. It must be replaced in case of any physical damage such as bent terminals, missing or broken parts, stripped threads, or evidence of exposure to heat. Leave the building and call your gas supplier. The maximum regulated capacity is 200 feet 3 /hour [5.7 meters 3 /hour]. I would not work on it, without completely replaceing the gas control system, and the furnace may not be worth that expense. The combination of spring pressure under the second automatic valve diaphragm and the lack of outlet pressure holds the diaphragm firmly closed. Do not try to light any appliance. Fig. 9. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. Turn off the main gas supply to the appliance. 0000023567 00000 n Turn the pressure regulator adjustment screw clockwise. If the gas control knob or reset button will not operate by hand, the gas control should be replaced by a qualified service technician. Do NOT use Teflon tape. 394349 9/64 inch hex tool for flange assembly screws. This product was the perfect replacement for the Honeywell thermopile in a circa 1975 gas fireplace unit. '', New members: Adding your location to your profile helps in many ways.--M--, valves" thread in the HVAC forum, someone wanted to know how a gas valve worked. To convert control from one gas to another: INSTALL ADAPTERS TO GAS CONTROLIf adapters are to be installed on the gas control, mount them as follows: USING ADAPTERS TO SOLVE SWING RADIUS PROBLEMSIn some field service applications, it is difficult or impossible to thread the gas control onto the gas supply pipe because of space limitations. 0000001317 00000 n Readjust the full rate outlet pressure if necessary to improve light off characteristics. All adjustments, wiring connections, and pilot outlets are accessible from the top of the gas control. Thanks. Yes, there is one screw to adjust the gas to the pilot and another to adjust the gas to the main burner. Thermostat and gas control main burner gas flow.NOTE: Gas controls are shipped with the gas control knob in the ON position. The pilot light is auto so when the thermostat calls for heat, a spark is sent to the ignition lighting up the pilot. The gas valve ( which came over with Christopher Columbus :laughing is finally seizing up/kaput. After the adapter is installed, the gas control is attached to the adapter as outlined above. . 0000052168 00000 n 0000011045 00000 n Hold down the gas control knob about one minute, then release. View our resources. The servo pressure regulator monitors outlet pressure to provide n even the main burner gas flow. IMPORTANT: These gas controls are shipped with protective seals over inlet and outlet tappings. Use only your hand to push down the reset button or turn the gas control knob. Never use any tools. I hope you enjoy and find them very beneficial! Robertshaw low profile millivolt gas valve- http://amzn.to/2iLXzEhWhite Rodgers 750mv thermopile- http://amzn.to/2zhKVnFRobertshaw pilot and thermopile combo-http://amzn.to/2zZAH8wHoneywell 750mv thermopile- http://amzn.to/2yfR9UKThermopile and Millivolt Gas Valve Troubleshooting Video-https://youtu.be/riaN_j5tmX4Thermopile Testing- https://youtu.be/63zFDe6P1bkWater Heater Thermopile and Millivolt Gas Valve Troubleshooting- https://youtu.be/RASBzK_XF2kHere are some of the Tools I use:Yellow Jacket Refrigerant Gauge Set http://amzn.to/2aenwTqRefrigerant hoses with valves http://amzn.to/2aBumVIYellow Jacket Gauge set \u0026 hoses https://amzn.to/2vLVkV9Yellow Jacket 4 Port Manifold w Hoses https://amzn.to/2BkuGIqFieldpieceSMAN360 Digital Manifold Set https://amzn.to/2BdoaD4FieldpieceSMAN460 Digital Manifold Set https://amzn.to/2nB4Fe6Compact Ball Valve for Refrigerant Hose https://amzn.to/2KUisW8QuickDisconnect 90 for refrigerant hose https://amzn.to/2MMtVcgUEI DL479 Multimeter with temp sensor http://amzn.to/2jtsUbJJB 6 CFM Vacuum Pump http://amzn.to/2nqbvo8Appion Blue 3/8\" to 1/4\" Vacuum Hose http://amzn.to/2uYlVycAppion Red 3/8\" to 1/4\" Vacuum Hose http://amzn.to/2uYg6RoAppion Valve Core Removal Tool http://amzn.to/2uYr8WLYellow Jacket 1/4\" by 1/4\" hose http://amzn.to/2umtcodCPS Vacuum Micron Gauge http://amzn.to/2v1nM3OSupco Vacuum Micron Gauge http://amzn.to/2v1JRiARectorSeal Bubble Gas Leak Detector http://amzn.to/2ckWACnUEI DL389 Multimeter http://amzn.to/2xAdaJfFieldpiece ST4 Dual Temp Meter http://amzn.to/2wc1ME3Air Acetylene Torch setup http://amzn.to/2aQalsb 15% Silver Brazing Rods http://amzn.to/2gVLyLcNitrogen Regulator http://amzn.to/2bXdR5fNitrogen Flow Meter http://amzn.to/2brvoBgDigital Refrigerant Scale http://amzn.to/2b9oXYl Accutrak VPE Ultrasonic Leak Detector https://amzn.to/2nFYKVeImperial Kwik Charge 535-C http://amzn.to/2uipEI6 FieldpieceSDMN6 Dual Manometer Pump http://amzn.to/2jyK5KaSupco Magnet Jumpers http://amzn.to/2gS4h6z2 pairs of alligator clips- http://amzn.to/2CtIL5zJB Vacuum Pump Oil http://amzn.to/2mGrlXyGeneral Tools digital Psychrometer http://amzn.to/2cSHsi1Fieldpiece SDP2 Digital Psychrometer http://amzn.to/2nniMVRRatcheting Service Wrench http://amzn.to/2dGV4NhAppion G5 Twin Recovery Pump http://amzn.to/2dGSEyr Irwin Wire Stripper/Cutter/Crimper http://amzn.to/2dGTj2VShop through Amazon! It looks like this: the thermopile is a generatorputs out up to 400 MV. There is a heat anticipator coil in there which limits current to the valve, and shorting that out can damage the valve. This includes a WIRING DIAGRAM. Ensure the main burner lights smoothly and without a flashback to the orifice and that all ports remain lit. Some tips regarding the Honeywell Millivolt valve: Always ensure the switch is in the off position when lighting the pilot. Resistance between the THTP & TH terminals must be 11.5 W0.2 W 2. 2 or 3) clockwise. Refer to Startup and Checkout section. Water heater not working? 2). 0000062506 00000 n Carefully check the main burner light off at the step pressure. Some considerations are: Cycling frequency. 0000066914 00000 n Does that indicate more a gas valve problem or a thermopile generator/pilot flame problem? The rod, which should be cleaned annually, by the way, will heat up and send a millivolt signal down to its ceramic base and on to the control board. Use only your hand to push down the reset button or turn the gas control knob. If the pilot flame is engulfing the thermopile and you are not getting enough voltage to open the main gas valve then the thermopile may need to be replaced.Supervision is needed by a licensed HVAC Tech while doing this as Experience and Apprenticeship garners Wisdom and Safety.We've Partnered with TruTechTools.com! 0000026455 00000 n Troubleshooting Honeywell Millivolt Valve, Troubleshooting the Gas Control System, Troubleshooting the Gas Control System, Vermont Castings, Majestic Products: DVR33, SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION Where the cost of an unexpected shutdown would be high, the system should be checked more ften. A stuck valve could release gas into the air without regulation or the valve could cause the unit not to fire up at all. Only the gas valve manufacturer or someone certified by the manufacturer of the gas valve can make repairs. startxref VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Set the thermostat to the lowest setting and shut off the electric power to the appliance. TRADELINE kits include a 9/64 in. 0000011066 00000 n The VR8200 Continuous Pilot Dual Automatic Valve Combination Gas Controls are used in gas-fired, standing pilot appliances. Use an ac voltmeter to measure the voltage across terminals TH and TR. Bulk update symbol size units from mm to map units in rule-based symbology. Force or attempted repair can result in fire or explosion. Use conversion factors in Table 2 to convert to capacities for other gases. Required fields are marked *. With the main burner in operation, paint all pipe joints (including adapters) and gas control inlet and outlet with rich soap and water solution. 0000139236 00000 n Your system is quite old and somewhat unsafe, in that the pilot comes off ahead of the safety valve. Learn more about Stack Overflow the company, and our products. Support horizontal pipes every 3 (91 cm) with metal pipe straps. TRADELINE model specifications are the same as those of standard models except as noted below.TRADELINE MODEL AVAILABLE: VR8200A Continuous Pilot Dual Automatic Combination Gas Control. SAFETY SHUTOFF OPERATIONIn the safety shutoff position, pilot and main burner gas flow is permitted.Safety shutoff occurs: Gas Control Knob Turned to OFFWhen the gas control knob is turned to OFF, it pulls up and locks the reset button, and closes the first automatic valve. Remove the thermopile wiring connector from the gas control. Mutually exclusive execution using std::atomic? It must measure at least 19.5VAC with the igniter powered. Do not use a gas control set for natural gas on an LP gas system or a gas control set for LP gas on a natural gas system. pressure drop for straight-through configuration). The next time the valve fails to open you need to measure the voltage across this valve coil, or, better, the current through it.. What gauge number wire and what length do you use to your t'stat? If necessary, adjust the pressure regulator to match the appliance rating. If you'd like to support the site, please allow ads. In this HVAC Furnace Video, I go over the Operation and Troubleshooting of a 750 Millivolt Gas Valve and Thermopile/PowerPile. 0000098813 00000 n Open the manual gas switch if the gas valve fails to operate and look to see if gas is flowing to the main burner or pilot. TROUBLESHOOTING MILLIVOLT GAS VALVES Part # 023625 (natural) & 023624 (LP) TH TP TH TP MILLIVOLT CONTROL VALVE To check Resistance of the gas valve, connect one wire to the valve as shown. quick-connect terminals, must comply with applicable electrical codes and ordinances.Disconnect power supply before making wiring connections to prevent electrical shock or equipment damage. Works with the majority of millivolt gas valves; Push-in clip for easy installation included; . 0000031335 00000 n [10 to 13 mm] of the thermocouple tip. honeywell millivolt gas valve troubleshooting From Gas Control Valve 1- Turn main gas on and proceed to next step. When installing the appliance as a rear vent unit, the 90. 5. Before lighting, smell all around the appliance area for gas. 0000126186 00000 n For a better experience, please enable JavaScript in your browser before proceeding. It only takes a minute to sign up. Inlet and outlet pressure taps included; both taps accessible from the top of gas control. I have some pictures to help clarify what I have, a ThermoPILE system. IMPORTANT: The specifications given in this publication do not include normal manufacturing tolerances. VR8200 for use with 24 Vac heating appliances and VR4200 for use with 120 . The pilot must be manually relit when normal burner operation is desired. http://www.robertshawtstats.com/spaw2/SiteContent/Files/faq/ControlTips-MillivoltSystems.pdf, http://en.wikipedia.org/wiki/American_wire_gauge, http://americanhvacparts.com/Merchantegory_Code=GV, http://americanhvacparts.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=GSV820A1047A&Category_Code=GV, http://en.wikipedia.org/wiki/Node_(circuits, http://www.emersonclimate.com/en-US/products/valves/Documents/0037-6264.pdf. Note that using an adapter increases the overall length of the gas control. 0000002246 00000 n ADJUST THE PILOT BURNER FLAMEThe pilot flame should envelop 3/8 to 1/2 in. Read these instructions carefully. TABLE 7PRESSURE REGULATOR SPECIFICATION PRESSURES IN INCHES WC. The gas control is likely to have operated for more than 200,000 cycles. CONVENIENCE TERMINALS SERVE AS A TIE POINT ONLY. Dusty, wet, or corrosive environment. This makes it ideal for fireplace and space heating uses that are vent free. 0000008826 00000 n IF THE MAIN BURNER IS OVERFIRINGAdjust the gas control pressure regulator to the correct pressure. They include a safety shutoff, a manual valve, two automatic operators, a pressure regulator, a pilot adjustment, and a conduit cover (VR4200 only). Extinguish pilot flame. Thus the flow of gas through the second automatic valve is reduced, and outlet pressure falls to the desired level. The gas valve part numbe read more Check the pilot burner flame adjustment. %PDF-1.3 % 0000012806 00000 n Below are my tests: See you next time at ACSERVICETECH Channel!Check out All of the ACSERVICETECH Playlists- https://www.youtube.com/channel/UCOZR-1IqsAer9wzlvFgb4mA/playlists?view_as=publicIf you want to support the ACSERVICETECH Channel and receive more HVAC content, check out www.Patreon.com/acservicetechACSERVICETECH is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to Amazon.com.You can enter Amazon through this http://amzn.to/2aenwTqHere is a link to the Fieldpiece SC640 Multimeter- http://amzn.to/2x8k4KbHere is a link to the Fieldpiece SC660 Wireless Multimeter- http://amzn.to/2gWDUhcHere is the link for the Robertshaw low profile millivolt gas valve- http://amzn.to/2iLXzEhHere is the link for the White Rodgers 750mv thermopile- http://amzn.to/2zhKVnFHere is the link for the Robertshaw Pilot and 750mv Thermopile combo- http://amzn.to/2zZAH8wHere is the link for the Honeywell armored cable 750mv Thermopile- http://amzn.to/2yfR9UKHere is a link to the Pro 3000 24v Thermostat used in the video- http://amzn.to/2keuUbsHere is a link to the JB 6 CFM Vacuum Pump http://amzn.to/2nqbvo8Here is the Link to the Appion Blue 3/8\" to 1/4\" Vacuum Hose- http://amzn.to/2uYlVycHere is the Link to the Appion Red 3/8\" to 1/4\" Vacuum Hose- http://amzn.to/2uYg6RoHere is the link to the Appion Valve Core Removal Tool- http://amzn.to/2uYr8WLHere is the link to the Yellow Jacket 1/4\" by 1/4\" heavy duty hose straight- http://amzn.to/2umtcodHere is the link to the CPS Vacuum Micron Gauge- http://amzn.to/2v1nM3OHere is the link to the Supco Vacuum Micron Gauge- http://amzn.to/2v1JRiAHere is a link for RectorSeal Bubble Gas Leak Detector http://amzn.to/2ckWACnHere is a link to the UEI DL389 Multimeter used in the videos- http://amzn.to/2xAdaJfHere is the link to the Fieldpiece ST4 Dual Temp Meter- http://amzn.to/2wc1ME3Here is a link to the Air Acetylene Torch setup- http://amzn.to/2aQalsb Here is a link to the 15% Silver Brazing Rods- http://amzn.to/2gVLyLcHere is a link the Nitrogen Regulator http://amzn.to/2bXdR5fHere is a link to the Nitrogen Flow Meter http://amzn.to/2brvoBgHere is a link to the Digital Refrigerant Scale used in the videohttp://amzn.to/2b9oXYl Here is the Link for the Yellow Jacket Refrigerant Manifold Gauge Set used in the videos http://amzn.to/2aenwTqHere is a link to Refrigerant hoses with valves used in the videos http://amzn.to/2aBumVIHere is the link for the Imperial Kwik Charge 535-C- http://amzn.to/2uipEI6 Here is the link to the Fieldpiece SDMN6 Dual Pressure Testing Manometer with Pump-http://amzn.to/2jyK5KaHere is a link for the Supco Magnet Jumpers http://amzn.to/2gS4h6zHere is a link to 1 gallon of JB Vacuum Pump Oil http://amzn.to/2mGrlXyHere is a link to the General Tools digital Psychrometer http://amzn.to/2cSHsi1Here is a link to the Fieldpiece SDP2 Digital Psychrometer- http://amzn.to/2nniMVRHere is the link for the Ratcheting Service Wrench http://amzn.to/2dGV4NhHere is a link to the Appion G5 Twin Recovery Pump http://amzn.to/2dGSEyr Here is a link to the Malco Sheet metal scribe- http://amzn.to/2qCwu9DHere is a link to the Wiss Right Tin Snips- http://amzn.to/2rGnBvXHere is a link to the Wiss Bulldog snips- http://amzn.to/2rd1Dz5Here is a link to the Malco 90 Degree Right Hand Vertical Snips- http://amzn.to/2qHHpu4Here is the link for the Irwin Wire Stripper/Cutter/Crimper http://amzn.to/2dGTj2VThank You, ACSERVICETECH Set your voltmeter for the proper voltage that is, above 24 volts. 0000016083 00000 n The low-pressureregulator maintains outlet pressure at the preset step rate for several seconds. The adapter is installed on the end of the supply pipe in place of the gas control, following the same precautions and instructions that are used for installing the gas control. Both pilot and main burner are shut off. Order number, SUPER TRADELINE or TRADELINE if desired. Do not overtighten. Run pipe or tubing to the gas control. The first automatic valve opens, and the second automatic valve operator valve disc is lifted off its seal. 0000066936 00000 n LP to natural gas conversion kit available for standard and slow-opening models. Safety shutoff or pilot gas proves complete shutdown since the safety shutoff valve permits main burner and pilot gas flow. Do I need a thermal expansion tank if I already have a pressure tank? We might be able to do something about it. See Fig. See Table 3. an Elbow (angle) flange cannot provide a right-hand inlet when the ECO connector is used.NOTE: Flange Kits include one flange with attached O-ring and four mounting screws. Regulator Cap Conversion Screw Pressure Regulator Housing, Cleaning the Standing Pilot Control System. %%EOF VR8200 for use with 24 Vac heating appliances and VR4200 for use with 120 Vac heating appliances that burn natural or liquefied petroleum (LP) gas. 0000002780 00000 n If: Measure the open and closed thermocouple output voltages and compare to the acceptable range charts in the thermocouple specifications or in the Gas Controls Handbook. PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. Do not touch any electrical switch or use the phone. 0000007857 00000 n Refer to Table 7 or 8 for the factory-set nominal outlet pressures and adjustment ranges. 0000016105 00000 n IF CHECKING GAS INPUT BY CLOCKING THE GAS METER: IF CHECKING GAS INPUT WITH A MANOMETER (PRESSURE GAUGE): The gas control outlet pressure should match the manifold pressure listed on the appliance nameplate. 1/4-inch male quick-connect terminals for electrical connections. 0000013496 00000 n 0000034510 00000 n I go over how it is Wired, wha. Slip the compression fitting over the tubing and slide out of the way. Asking for help, clarification, or responding to other answers. 0000016980 00000 n 0000002778 00000 n The gas valve is the load.need to have current flow from one leg of the thermopilethrough the limit switch ( zero ohms ) througn the thermostat switch ( approx zero ohms on call for heat) through the coil of the valveand back to the other terminal of the generator. Please comment and ask for videos that you would like to see in the future! 0000002758 00000 n You can test the rest of the system by temporarily replacing the generator with a 1.5 volt standard flashlight battery. I'll show you how to troubleshoot and diagnose the problem with your water heater and Honeywell gas val. 0000006141 00000 n This wiring should reduce to a simple series circuit: a gas valve coil in series with a thermopile in series with a t'stat with normally open contacts in series with a limit switch with normally closed contacts. Contact your Honeywell sales representative to request a gas valve with corrosion-resistant construction. 0000006677 00000 n Using Kolmogorov complexity to measure difficulty of problems? Install Piping to Gas ControlAll piping must comply with local codes and ordinances or with the National Fuel Gas Code (ANSI Z223.1 NFPA No. 54), whichever applies. If the regulator cannot be adjusted and supply pressure is in the normal range, replace the gas control. 0000011989 00000 n This is How to Wire the Thermopile to The 750mv Gas Valve for the Pilot and Main Gas Burners. If the reading is higher,magnet is defective therefore Change the Valve - Do not try to repair. The boiler comes on twice a day - morning and night. 0000027369 00000 n 0000028628 00000 n The gas control should e replaced if: It does not perform properly on checkout or troubleshooting. If it is flowing, measure the voltage between the 24V Hot and 24V Common leads to the SmartValve. Terminal block color-coded beige.THERMOSTAT HEAT ANTICIPATOR SETTING:VR4200: 0.1AVR8200: 0.5ATYPE OF GAS: VR8200 and VR4200 set up for naturalgas includes a 393691 LP Conversion Kit. wc [0 kPa] to rated output pressure within 3-6 seconds (for an 80,000 Btuh furnace at 7 in. If you have not I will give some ideas. Yes, this shows the pilot gen. in series with the limit switch in series with the t'stat. rating 1/2 psi [3.5 kPa] inlet pressure.PRESSURE REGULATION: See Table 1. 10 Easy Things to Check When Troubleshooting a Furnace Gas Valve. Apply a moderate amount of good quality pipe compound to bushing, leaving two end threads bare. If you do not smell gas, turn the knob on gas control counterclockwise. Tech Guru. If it fires, it is working correctly. To check for gas pipe leaks, put soap on the pipe connecting to the valve, if it bubbles, it means there's leakage. I'm looking for help identifying what model it actually is (so I can search for information specific to it) or ideas on what might be wrong. Jimbo, Thanks for that tip. Home and Building ControlHoneywell Inc.1985 Douglas Drive NorthGolden Valley, Minnesota 55422, Home and Building ControlHoneywell LimitedHoneywell Limite740 Ellesmere RoadScarborough, OntarioM1P 2V9, This is a legacy product document supported by Resideo. Pilot gas flow should stop within 2-1/2 minutes. 0000137800 00000 n The Fora platform includes forum software by XenForo. 0000060689 00000 n When the thermostat calls for heat, the automatic operator valve disc opens. hb``b``r` LT, bBPQ%@AL;LiaP2l3 2 This may burn out the heat anticipator in the thermostat or damage the DI module.IMPORTANT: Allow 60 seconds after shutdown before reenergizing the step-opening model to assure light off at step pressure. 6. 0000028651 00000 n 10 0 obj <> endobj 0000012695 00000 n Install thermostat, and other controls as required. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). The gas control knob is hard to turn or push down, or it fails to pop back up when released. This increases gas pressure under the automatic valve and repositions the valve disc closer to the seat. first the 360 millivolts you show should have been 750 to 800 millivolts since this is a pilot generator. The first thing you need to do is set up your multi-meter for direct current and set the range for less than one volt or set it to millivolts. Troubleshooting the valve and looking for known common issues will give you peace of mind by ensuring the safe operation of your Honeywell appliance. CHECK AND ADJUST GAS INPUT TO THE MAIN BURNER, Standard-Opening and Slow-Opening Pressure Regulator, Step-Opening Pressure Regulator and Delayed and Step-Opening Pressure Regulator. Gas valves nowadays are one piece with 100% shutoff for the pilot flame gas and shutoff valve etc all in one valve. If resistance is outside of specifications listed, the gas valve must be replaced. If tubing is used, obtain a tube-to-pipe coupling to connect the tubing to the gas control. I have an old millivolt gas furnace that's stopped working. I go over how it is Wired, what Voltages you should be reading while the flame is present and the voltages needed for the pilot valve and main gas valve to work correctly. . 0000002263 00000 n If it is, simply replace the igniter/flame rod assembly. Do not bend pilot tubing at gas control or pilot burner after compression fitting has been tightened, or gas leakage at the connection may result.