0000002119 00000 n 2 or 3) clockwise. With the . Use conversion factors in Table 2 to convert to capacities for other gases. WHEN THE THERMOSTAT CALLS FOR HEATThe gas control allows pilot and main burner gas flow during the thermostat ON cycle, as shown in Fig. Support horizontal pipes every 3 (91 cm) with metal pipe straps. Check the ratings given in the instructions and on the product to ensure the product is suitable for your application. I am trying to diagnose a problem with an old furnace. Remove the pilot adjustment cover screw. TROUBLESHOOTING MILLIVOLT GAS VALVES PART # 023625 (NATURAL) & 023624 (LP) TroubleMillvoltGasV 04/16 . 14 when the: The power unit holds the safety shutoff valve disc off its seat, so gas can flow into the control. Now I'm sure my problem's the thermopile. But it has been reliable for a long time. Tighten the screws to 25 inch-pounds of torque to provide a gas-tight seal. 0000004689 00000 n 2). The main burner gas flow is blocked by both automatic valves. The pilot works fine but the main burner does not come on by the wall mounted thermostat or the manual on/off switch. Installation of Logs and Lava Rock Material. Connect and share knowledge within a single location that is structured and easy to search. Always install horizontal venting on a level plane. This is How to Wire the Thermopile to The 750mv Gas Valve for the Pilot and Main Gas Burners. This diverts gas flow from the automatic valve diaphragm and causes a reduction of pressure on the underside of this diaphragm. 0000011088 00000 n 0000044905 00000 n Locate gas control in a well-ventilated area. Push and hold down the red reset button (Figs. 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. Yes, there is one screw to adjust the gas to the pilot and another to adjust the gas to the main burner. After installation is complete, use these instructions to check out product operation. The low-pressureregulator maintains outlet pressure at the preset step rate for several seconds. rev2023.3.3.43278. Gas valves nowadays are one piece with 100% shutoff for the pilot flame gas and shutoff valve etc all in one valve. If the inlet pressure is in the normal range (refer to Table 7 or 8), replace the existing gas control. Refer to Table 7 or 8 for the factory-set nominal outlet pressures and adjustment ranges. There must be two terminals in this connector block that powers the gas valve coil. CAUTION!Do not apply a jumper across or short the valve coil terminals. TABLE 5MAXIMUM LENGTH OF SUPPLEMENTARY LIMIT LEAD WIRES WHEN USING Q340A THERMOCOUPLE. Fig. Mount the gas control 0-90 degrees, in any direction, from the upright position of the gas control knob, including vertically. Proper gas valve adjustment can save your home from a devastating fire. This decreases gas pressure under the second automatic valve diaphragm and repositions the valve disc further from the seat. first the 360 millivolts you show should have been 750 to 800 millivolts since this is a pilot generator. Step-Opening Pressure Regulation (VR8200C,P andVR4200P)Step-opening gas controls actually combine two pressure regulators, one for the low pressure and one for the full-rate pressure. If necessary, adjust the pressure regulator to match the appliance rating. Straight-through body pattern; right-angle adapters available for inlet and outlet. This is a very useful thread and am learning a lot from it partly because of my situation with my current Weil McClain boiler. 0000034510 00000 n We come out with new videos every few days from my job sites, service calls, and the training shop! . 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. <<50A7D4D2F74D8141B7F3BE8FD5737B51>]/Prev 36635>> 0000017061 00000 n JavaScript is disabled. I have an old millivolt gas furnace that's stopped working. 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. Refer to Fig. Gas control operation is described in more detail below.VALVE POSITION DURING THERMOSTAT OFFCYCLEThe valve is positioned as shown in Fig. Combination screw and quick-connect terminals on TRADELINE models. the robertshaw link gives max lengths vs. gauge. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). Capacity is based on 1000 Btu/feet 3, 0.64 specific gravity natural gas at 1-inch water column pressure drop [37.3 MJ/meters 3, 0.64 specific gravity natural gas at 0.25 kPa pressure drop].The maximum regulated capacity is 200 feet 3 /hour [5.7 meters 3 /hour]. This valve is only for vent free applications. I go over what to do if you are not receiving the correct voltages. Come join the discussion about tools, projects, builds, styles, scales, reviews, accessories, classifieds, and more! I'm wondering though if 750 mv is for all thermopiles..even my old one dating back to about the mid 50s??? 0000007879 00000 n See Figs. 0000013496 00000 n Replace the part if the gas leak cannot be stopped. 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. Inlet and outlet pressure taps included; both taps accessible from the top of gas control. 0000139520 00000 n TRADELINE kits include a 9/64 in. 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 If you have not I will give some ideas. 0000060689 00000 n It does so for the very first instance both in the morning and night but thereafter, the pilot just stays lit and the chambers aren't lit or heating the house. Thermopile readings: With all wires connected, with the pilot on and burners off, the thermopile reading at the TP & THTP terminals should be ~325mV. Circuit Millivolt Check Symptom - Intermittent shutdown or main burner will not light with on/off switch. 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. If the red reset button stays depressed after it is released, replace the gas control. A stuck valve could release gas into the air without regulation or the valve could cause the unit not to fire up at all. Therefore, this unit may not exactly match the listed specifications. 0000011066 00000 n 0000043015 00000 n Test the voltage using an AC voltmeter. 0000028590 00000 n 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. For a better experience, please enable JavaScript in your browser before proceeding. 0000137823 00000 n 0000001317 00000 n IMPORTANT: The specifications given in this publication do not include normal manufacturing tolerances. Natural to LP gas conversion kit available for nonTRADELINE standard and slow-opening models. Do not overtighten. Do not try to light any appliance. (See Fig. WARNING!FIRE OR EXPLOSION HAZARDS CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH. 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! If the regulator cannot be adjusted and supply pressure is in the normal range, replace the gas control. If the O-ring is not attached or is missing, do not use the flange. Do not touch any electrical switch or use the phone. Always install sediment trap in gas supply line to prevent contamination of gas control. 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. For a better experience, please enable JavaScript in your browser before proceeding. I searched for that gas valve, and found this one as the replacement: I would seriously consider what Jimbo said, but, yes, if you bypass the t'stat and the limit switch with jumper wires and the pilot is on, the valve should open if the schematic is what I think it is. 0000009803 00000 n The VR8200 Continuous Pilot Dual Automatic Valve Combination Gas Controls are used in gas-fired, standing pilot appliances.
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