The first automatic valve is closed. Dont touch any electrical switch or use the phone. I forgot to mention that I got the main burner to light on 2 occassions by tapping on either the gas pipe before the main shutoff valve, or on the honeywell gas millivolt valve itself. Turn the gas control knob to the "On" position if the main burner does not turn on when the thermostat or controller is adjusted to start the appliance. Gas valve troubleshooting looks for a problem. Check the ratings given in the instructions and on the product to ensure the product is suitable for your application. The generator, heated by the pilot burner flame, pro- . Refer to Fig. Assure the main gas supply valve is open and the pilot gas supply line is purged of air. 0000028651 00000 n Set the thermostat or the device's controller slightly above the current room temperature. Free shipping for many products! For use in standing pilot appliances. 0000028628 00000 n Minimum regulated capacity is 20 feet 3 /hour [0.6 meters 3 /hour]. 0000036872 00000 n Use an ac voltmeter to measure the voltage across terminals TH and TR. 0000003581 00000 n For a better experience, please enable JavaScript in your browser before proceeding. The pilot will remain lit, ready for return to normal service without relighting.COMPLETE SHUTDOWN: Turn the gas control knob clockwise to OFF. 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! Combination 1/4 inch quick-connect and screw terminals (includes convenience terminals), One 3/4 inch straight flange assembly (with O-ring and screws). If something is wrong with the internal components of the gas valve, the gas valve should be replaced. 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. Readjust the full rate outlet pressure if necessary to improve light off characteristics. This makes it ideal for fireplace and space heating uses that are vent free. If the appliance is a hot water heater but it's not firing up, the thermopile might be weak. Check if gas is flowing if you turn on the gas and the pilot burner doesn't light. 0000006449 00000 n 4 41 Voltage drop across the switch terminals Burner on: 35 mv or less. 0000068110 00000 n millivoltage automatic valve operator, and optional gas pressure regulator. cut tubing to the desired length and bend as necessary for routing to pilot burner. I have some pictures to help clarify what I have, a ThermoPILE system. Any help and/or comment would be greatly appreciated. These Videos are all part of our Training Series on HVACR Service, Installation, Preventative Maintenance, General Knowledge, and Tips. With the loss of outlet pressure, the second automatic valve closes and is held closed by spring pressure on the diaphragm. Set your thermostat to under the room's current temperature and let at least one minute pass to allow the appliance to attempt to get fuel. Some considerations are: Cycling frequency. Leave the building and call your gas supplier. How do you ensure that a red herring doesn't violate Chekhov's gun? See Figs. I have an old millivolt gas furnace that's stopped working. Then tighten one more turn with a wrench. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Also, this product is tested and calibrated under closely controlled conditions, and some minor differences in performance can be expected if those conditions are changed. The power unit drops out, closing the safety valve and stopping all gas flow through the control.With the loss of outlet pressure, the second automatic valve closes and is held closed by spring pressure on the diaphragm. Filter. Check the pilot burner flame adjustment. 0000005081 00000 n Fig. On LP gas installation, use compound resistant to LP gas. The PILOT position allows pilot burner gas flow only. With the main burner operating, check the gas control flow rate using the meter clocking method or check the gas pressure using a manometer connected to the gas control outlet pressure tap. rev2023.3.3.43278. It may not display this or other websites correctly. In this HVAC Furnace Video, I go over the Operation and Troubleshooting of a 750 Millivolt Gas Valve and Thermopile/PowerPile. 0000005616 00000 n Use conversion factors in Table 2 to convert to capacities for other gases. 0000043015 00000 n When the thermostat calls for heat, the automatic operator valve disc opens. 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. 0000126162 00000 n pressure drop for straight-through configuration). Install ThermocoupleThe Q340A Thermocouple (with adapters) is provided with SUPER TRADELINE models of the VR8200A. See Table 1 for model specifications.SUPPLY VOLTAGE:VR4200: 120 Vac, 60 Hz.VR8200: 24 Vac, 60 Hz. Do not make sharp bends or deform the tubing. 0000066936 00000 n By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Replace the thermocouple if voltages are outside the acceptable range. Yes, this shows the pilot gen. in series with the limit switch in series with the t'stat. If the O-ring is not attached or is missing, do not use the flange. %%EOF 0000027628 00000 n 0000036895 00000 n Push in firmly to lock in place. When making the conversion, the main pilot burner orifices must be changed to meet the appliance manufacturer specifications. The pilot stays lit fine and the thermopile generates about 360 millivolts, and there's no problem at the thermostat (checked voltage and shorting past it), but the main valve no longer opens. What you are experiencing is why such adjustments are discouraged! 0000006141 00000 n Thanks. A1/{;_Fe o(*=`. honeywell millivolt gas valve troubleshooting From Gas Control Valve 1- Turn main gas on and proceed to next step. 0000072700 00000 n The internal valve coil must then be connected to the topmost and bottommost of the four terminals. If you have not I will give some ideas. 0000072676 00000 n Extinguish pilot flame. A. Thermocouple-Only: Found in: Most gas log sets with standard safety pilot knob control. Relight pilot burner and operate the system through one complete cycle to assure all controls operate properly. Do not try to light any appliance. This is an electrical connection and must be clean and dry. a. And we already know that the t'stat + terminal is jumpered to the t'couple + terminal, and that the t'stat - terminal is jumpered to the limit switch + terminal. Only the gas valve manufacturer or someone certified by the manufacturer of the gas valve can make repairs. If tubing is used, ensure the ends are square, deburred and clean. Safety shutoff or pilot gas proves complete shutdown since the safety shutoff valve permits main burner and pilot gas flow. 0000003485 00000 n Yes, there is one screw to adjust the gas to the pilot and another to adjust the gas to the main burner. Here are a couple pictures of the valve: Since this question was asked 1 year ago, I have to assume you have solved the problem. The Robertshaw - Uni-Line 700-500 and 710-500 Series millivolt gas valves are thermostatically actuated com- bination gas valves. Otherwise, take the necessary steps to provide proper gas pressure to the gas control. If necessary, adjust the pressure regulator to match the appliance rating. 6. 0000013040 00000 n )POWER UNIT:Hold-in current: 300 mA maximum.Drop-out current: 250 to 90 mA.THERMOCOUPLE:Nominal output: 30 mV (0.018 ohms).Open Circuit Turndown Voltage: 2 mV.ELECTRICAL CONNECTIONS (2): 1/4 inch male quick-connects. 15. Thermopile readings: With all wires connected, with the pilot on and burners off, the thermopile reading at the TP & THTP terminals should be ~325mV. A place where magic is studied and practiced? Install sediment trap in the supply line to the gas control. One Q340A 36-inch thermocouple with adapters and clip. WARNING!FIRE OR EXPLOSION HAZARDS CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH. Connect the other end of the tubing to the pilot burner according to pilot burner manufacturer instructions. If it isn't flowing, replace the SmartValve. Why isn't the spark gap lighting the pilot on my furnace? I have a Superior Gas Fireplace model DR-500CMP that currently has a Honeywell Millivolt Gas Valve that I need to replace but the part number does not cross to a valid number. 0000003019 00000 n 0000007638 00000 n Find many great new & used options and get the best deals for Robertshaw 710-502 Millivolt Low Capacity Gas Valve, 1/2" x 1/2", 70,000 BTU at the best online prices at eBay! All adjustments, wiring connections, and pilot outlets are accessible from the top of the gas control. 0000003838 00000 n Cycle the main burner several times, allowing at least 30 seconds between cycles for the regulator to resume the step function. Bashing my head against the walls in some of the internet's finest chat rooms. 0000028639 00000 n If another gas leak is detected, tighten adapter screws, joints, and pipe connections. Square off and remove burrs from the end of the tubing. Mount the gas control 0-90 degrees, in any direction, from the upright position of the gas control knob, including vertically. 0000002263 00000 n 0000062506 00000 n Is it correct to use "the" before "materials used in making buildings are"? 0000016083 00000 n Why are physically impossible and logically impossible concepts considered separate in terms of probability? 44 0 obj <>stream For screen reader problems with this website, please call 1-800-430 . 0000000016 00000 n For your safety, read the following warnings before lighting the appliance: WARNING: BEFORE DOING ANY GAS CONTROL SERVICE WORK, REMOVE GLASS FRONT. 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. Determine if the pilot burner requires a thermocouple with a push-in clip or attachment nut, and attach the correct adapter to the. Tech Guru. 0000031358 00000 n If it then "clicks" meaning it is opening with voltage supplied to it than most likely it's not the gas valve which is bad. 0000139236 00000 n Refer to Figs. thatguy, I hear you. 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. The condition of the wiring is also suspect; loose connections, old oxidized control contacts, an old thermostat, are all potential problems. Comment * document.getElementById("comment").setAttribute("id","aac0d23d4efdcbcc5f3480c59cc4754f");document.getElementById("afe6277d1c").setAttribute("id","comment"); Save my name, email, and website in this browser for the next time I comment. If the voltage is dead or not as rated, replace the valve. Thanks for that well-descriptive tips. It has been obsolete for over 30 yrs now. Turn the inner adjustment screw clockwise. When Pilot Flame Goes OutWhen the pilot flame goes out or is too small to reliably light the main burner, thermocouple output drops below the power unit hold-in valve. Does that indicate more a gas valve problem or a thermopile generator/pilot flame problem? 4 0 obj <> endobj Never use any tools. 0000002758 00000 n I'll show you how to troubleshoot and diagnose the problem with your water heater and Honeywell gas val. This is How to Wire the Thermopile to The 750mv Gas Valve for the Pilot and Main Gas Burners. 6 terminals + 2 jumpers = 4 effective terminals = 4 nodes. 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. A stuck valve could release gas into the air without regulation or the valve could cause the unit not to fire up at all. After the adapter is installed, the gas control is attached to the adapter as outlined above. Please comment and ask for videos that you would like to see in the future! Turn the gas control knob (Figs. The pilot works fine but the main burner does not come on by the wall mounted thermostat or the manual on/off switch. https://www.trutechtools.com/?affid=43 Use our Promo Code: \"acservicetech\" for 8% off your order! Proper gas valve adjustment can save your home from a devastating fire. Do not force the gas control knob. 9. Intermittent use. You are using an out of date browser. d7Pq~XxqJea6`^ Ys4Y/{ 0000060689 00000 n Contact your Honeywell sales representative to request a gas valve with corrosion-resistant construction. CONVENIENCE TERMINALS SERVE AS A TIE POINT ONLY. SIT 822 Valve with a Honeywell Electronic Igniter NOTE: Remove glass before servicing. Slip the compression fitting over the tubing and slide out of the way. Set thermostat to the desired temperature. 0000011836 00000 n This is a legacy product document supported by Resideo.This product is no longer manufactured. Install the new plastic pressure regulator adjustment screw so that the top of the screw is flush (level) with the top of the regulator. If the pilot flame has gone out, follow these instructions exactly: TO TURN OFF THE APPLIANCEVACATION SHUTDOWN: Turn gas control knob clockwise from ON to PILOT. Because gas is involved, problems with gas valves are a major safety concern. The combination of spring pressure under the second automatic valve diaphragm and the lack of outlet pressure holds the diaphragm firmly closed. See Fig. The first automatic valve opens, and the second automatic valve operator valve disc is lifted off its seal. Use only your hand to push down the reset button or turn the gas control knob. Since these environments can cause the gas control to deteriorate more rapidly, the system should e checked more often. hb``Pc`` _Ps400! 0000034533 00000 n 0000002167 00000 n 0000013496 00000 n 0000013473 00000 n 0000027369 00000 n The small valve seat attached to the reset button closes and shuts off the pilot gas flow. Home Honeywell Honeywell VR8200, VR4200 Combination Gas Controls User Guide. May be installed at any angle between 0 and 90 degrees from the upright position, including vertically. Your email address will not be published. Water heater won't light? The ON position allows pilot burner and main burner gas low under control of the thermostat and the two automatic valves. 2 or 3. Use only your hand to push down the reset button or turn the gas control knob. Do not force the gas control knob. 0000066914 00000 n . To check for gas pipe leaks, put soap on the pipe connecting to the valve, if it bubbles, it means there's leakage. Hunker may earn compensation through affiliate links in this story. Avoid locating gas control where exposure to corrosive chemical fumes or dripping water are likely. THEY ARE NOT INTERNALLY WIRED TO THE CONTROL CIRCUIT OR TO THE GROUND. 0000012695 00000 n Why Do the Burners Work but the Oven Does Not Work on My Gas Stove. A normal reading will be in the range of 145 to 195 millivolts. 0000026083 00000 n INSTRUCTIONS TO THE HOMEOWNER FOR YOUR SAFETY, READ BEFORE OPERATING WARNING!IF YOU DO NOT FOLLOW THE WARNINGS BELOW AND THE LIGHTING INSTRUCTIONS EXACTLY, A FIRE OR EXPLOSION CAN RESULT WITH PROPERTY DAMAGE, PERSONAL INJURY OR LOSS OF LIFE. 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. LP to natural gas conversion kit available for standard and slow-opening models. to protect them and prevent gas from leaking, and discourage tampering by untrained people. 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 Zero clearance sleeve is required only for combustible walls. A contractor came by and gave it a crack at it and said it was the gas valve but I'm not confident that that could be the problem as from reading this post, the thermoCOUPLE should be swapped out first before assuming it is the gas valve as it is a more pricey unit to replace. They include a safety shutoff, a manual valve, two automatic operators, a pressure regulator, a pilot adjustment, and a conduit cover (VR4200 only). The boiler comes on twice a day - morning and night. Turn the pressure regulator adjustment screw clockwise. Insert bushing in gas control and thread pipe carefully into bushing until tight. The electrical/scientific basis for millivolt systems is the Seebeck 0000041780 00000 n Combination 1/4 inch quick-connect and screw terminals (includes convenience terminals). See Fig. Assure the main burner primary air supply is properly adjusted for complete combustion (refer to the appliance manufacturer instructions). Thread pipe into gas control. 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? 0000023590 00000 n Kit for conversion from LP to natural gas is available for standard and slow opening models. 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. Replace the thermocouple if voltages are outside the acceptable range. In many such applications, particularly commercial cooking, the equipment operates 100,000-200,000 cycles per year. I suspect they are the "white" terminal and TH1. The problem I'm having is very simple. ECO connector included with some models: also available as an accessory. This type of gas valve used a single thermocouple. This product was the perfect replacement for the Honeywell thermopile in a circa 1975 gas fireplace unit. The second automatic valve operator is de- energized, closing the channel to the pressure regulator, and opening a channel to the underside of the second automatic valve diaphragm. Set your voltmeter for the proper voltage that is, above 24 volts. Furnace gas valves cannot be repaired. 0000011989 00000 n This material is proprietary to Honeywell Limited and shall not be reproduced, copied or used in any manner without prior written consent of . 0000012011 00000 n ' b1?T3/0.!0s.2c7oDp!c{|87*G2s>y~O9SNF. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. 0000006677 00000 n Straight-through body pattern; right-angle adapters available for inlet and outlet. A separate reset button must be held down to permit gas flow while lighting the pilot; can be pushed down only in the PILOT position. Regular preventive maintenance is important in applications that place a heavy load on system control such as in the commercial looking and agricultural and industrial industries because: The VR8200, VR4200 gas controls provide 3-position (OFF-PILOT-ON) manual control of gas flow.
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