Choose the appropriate flange for your application. 0000017061 00000 n It may not display this or other websites correctly. Water heater not working? 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. I hope you enjoy and find them very beneficial! 0000003926 00000 n 0000023590 00000 n '', 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. Insert and tighten the screws provided with the flange. OD tubing. Good reading is 0 to 0.2 Ohms . Intermittent use. hb``Pc`` _Ps400! 0000066914 00000 n The first automatic valve is closed. They include a safety shutoff, a manual valve, two automatic operators, a pressure regulator, a pilot adjustment, and a conduit cover (VR4200 only). 0000010110 00000 n Never use pipe compound. Replace the thermocouple if voltages are outside the acceptable range. . Do not touch any electrical switch or use the phone. The best answers are voted up and rise to the top, Not the answer you're looking for? SUPER TRADELINE MODELSSUPER TRADELINE controls offer features not avail- able on TRADELINE or standard models, and are designed to replace a wide range of Honeywell and competitive controls.SUPER TRADELINE model specifications are the same as those of standard models except as noted below.SUPER TRADELINE MODEL AVAILABLE: VR8200A Continuous Pilot Dual Automatic Combination Gas Control. The second automatic valve diaphragm, controlled by the servo pressure regulator, opens and adjusts gas flow as long as the system is powered and the pilot is burning. I was just wondering about this the other day. Mount the gas control 0-90 degrees, in any direction, from the upright position of the gas control knob, including vertically. See Fig. Ensure the installer is a trained, experienced service technician. This product was the perfect replacement for the Honeywell thermopile in a circa 1975 gas fireplace unit. SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION. To ensure proper operation, follow these guidelines: Locate the gas control in the appliance vestibule on the gas manifold. The ON position allows pilot burner and main burner gas low under control of the thermostat and the two automatic valves. If the appliance uses LP (bottled) gas, be sure to smell next to the floor because LP gas is heavier than air. Category: HVAC. You can test the rest of the system by temporarily replacing the generator with a 1.5 volt standard flashlight battery. Filter. And after two or so minutes, the gas chambers will be lit. hex wrench, as noted.PILOT GAS OUTLET: Compression fitting for 1/4 in. Fig. Check the regulator setting either with a manometer or by clocking the gas meter. Run pipe or tubing to the gas control. Dont touch any electrical switch or use the phone. 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. 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. May be installed at any angle between 0 and 90 degrees from the upright position, including vertically. If the regulator cannot be adjusted and supply pressure is in the normal range, replace the gas control. Millivolt systems have been the industry standard for decades, and are in some ways simpler to troubleshoot than electronic ignition systems. 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. first the 360 millivolts you show should have been 750 to 800 millivolts since this is a pilot generator. Loss of power closes the automatic valves, but leaves the pilot lit, ready to return to normal service when power is restored. Adjust the thermostat several degrees higher than your current room temperature. With the . As for the gas valve it is probably a "general controls" valve but any 800 millivolt gas valve can be used as a replacement. the manual gas control knob is in the ON position. cut tubing to the desired length and bend as necessary for routing to pilot burner. Check fireplace to make sure it is levelled and properly positioned. Because gas is involved, problems with gas valves are a major safety concern. 0000002388 00000 n Learn more about Stack Overflow the company, and our products. Remove seals over gas control inlet and outlet if necessary. Hold each tester wand on the multimeter to one of the terminals on the gas valve. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Assure thermocouple connection to the power unit is tightened 1/4 turn beyond finger tight. Troubleshooting the valve and looking for known common issues will give you peace of mind by ensuring the safe operation of your Honeywell appliance. 0000011045 00000 n 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. The minimum regulated capacity is 20 feet 3 /hour [0.6 meters 3 /hour]. 7.). I show you how to Light the Pilot and Power the Main Burner! Check the power unit resistance. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. 0000055329 00000 n Because gas is involved, problems with gas valves are a major safety concern. Contact your Honeywell sales representative to request a gas valve with corrosion-resistant construction. 0000028628 00000 n Residential and Building Controls Division Customer Satisfaction. TROUBLESHOOTING MILLIVOLT GAS VALVES PART # 023625 (NATURAL) & 023624 (LP) TroubleMillvoltGasV 04/16 . If you smell gas, immediately shut off the manual valve in the gas piping to the appliance or, on LP, at the tank. 0000016504 00000 n 2 or 3) while you light the pilot burner. Resistance between the THTP & TH terminals must be 11.5 W0.2 W 2. Thanks for contributing an answer to Home Improvement Stack Exchange! Disconnect power supply before wiring to prevent electrical shock or equipment damage. A. Thermocouple-Only: Found in: Most gas log sets with standard safety pilot knob control. If necessary, adjust the pressure regulator to match the appliance rating. Troubleshooting an IID control system calls for an AC voltmeter with a 220-volt range or greater. This is How to Wire the Thermopile to The 750mv Gas Valve for the Pilot and Main Gas Burners. )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. 0000002119 00000 n TABLE 8PRESSURE REGULATOR SPECIFICATION PRESSURES IN kPa. 10 0 obj <> endobj Use only your hand to push down the reset button or turn the gas control knob. Do not try to light any appliance. 0000008225 00000 n As the pressure inside the gas control and underneath the automatic valve diaphragm equalizes, spring pressure closes the second automatic valve to provide a second barrier to gas flow. trailer 0000010874 00000 n Insert the replacement spring with the tapered end down. 0000001317 00000 n 0000011066 00000 n Set thermostat to the desired temperature. I'm wondering though if 750 mv is for all thermopiles..even my old one dating back to about the mid 50s??? 0000044905 00000 n Check the ratings given in the instructions and on the product to ensure the product is suitable for your application. Where the cost of an unexpected shutdown would be high, the system should be checked more ften. Ensure the main burner lights smoothly and without a flashback to the orifice and that all ports remain lit. This is an electrical connection and must be clean and dry. If tubing is used, ensure the ends are square, deburred and clean. 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. 0000034533 00000 n Note that using an adapter increases the overall length of the gas control. Exposure to water, dirt, chemicals, and heat can damage the gas control and shut down the control system. The maintenance program should include regular checkout of the gas control, see the Startup and Checkout section, and the control system as described in the appliance manufacturer literature. Assure the main burner primary air supply is properly adjusted for complete combustion (refer to the appliance manufacturer instructions). I would recommend replacing all the wiring and controls and the pilot generator. . 8Proper use of wrench on gas control. Do not remove the existing window frame assembly. But it has been reliable for a long time. For push-in clip-type pilot burners: From beneath, insert the tip of the Q340 into the hole or barrel of the pilot burner. If it is, simply replace the igniter/flame rod assembly. Use only your hand to push down the reset button or turn the gas control knob. The pilot light is auto so when the thermostat calls for heat, a spark is sent to the ignition lighting up the pilot. Only the gas valve manufacturer or someone certified by the manufacturer of the gas valve can make repairs. Connect the other end of the tubing to the pilot burner according to pilot burner manufacturer instructions. wc [1.8 kPa] inlet pressure and 3.5 in. This shuts off the pilot and main burner gas flow. Use new, properly reamed pipe free from chips. Some tips regarding the Honeywell Millivolt valve: Always ensure the switch is in the off position when lighting the pilot. <<50A7D4D2F74D8141B7F3BE8FD5737B51>]/Prev 36635>> Good info, thanks! After installation is complete, use these instructions to check out product operation. Adjustable servo regulator effectively maintains almost constant gas output pressure under wide fluctuation in gas supply pressure. TABLE 7PRESSURE REGULATOR SPECIFICATION PRESSURES IN INCHES WC. If necessary, adjust the pressure regulator to match the appliance rating. If any particular ad is your REASON for blocking ads, please let us know. This includes a WIRING DIAGRAM. 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. Kit for conversion from LP to natural gas is available for standard and slow opening models. inlet and 1/2 inch outlet; adapters available for 3/8 or 3/4 inch. Follow these warnings exactly: CAUTIONNever apply a jumper across or short the valve coil terminals. 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. This diverts gas flow from the automatic valve diaphragm and causes a reduction of pressure on the underside of this diaphragm. One more troubleshooting tip, on a residential gas furnace if a gas valve is not "clicking" meaning it's apparently not receiving 24 volts you can jump directly off of the control board using the R and the C terminals, R to one terminal on gas valve and C to the other terminal on gas valve (or wherever else you can retain 24 volts from) to the gas valve. 0000004421 00000 n Does that indicate more a gas valve problem or a thermopile generator/pilot flame problem? 0000007857 00000 n 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. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. 0000005594 00000 n Such heavy cycling wears out the gas control in one to two years. Use an ac voltmeter to measure the voltage across terminals TH and TR. Hunker may earn compensation through affiliate links in this story. Thread pipe into gas control. endstream endobj startxref Replace the thermocouple if voltages are outside the acceptable range. Voltage drop across the switch terminals Burner on: 35 mv or less. The low-pressureregulator maintains outlet pressure at the preset step rate for several seconds. Remove the pilot adjustment cover screw. If an adapter is used, place the wrench on the adapter rather than on gas control. The PILOT position allows pilot burner gas flow only. Tech Guru. Is it correct to use "the" before "materials used in making buildings are"? Straight-through body pattern; right-angle adapters available for inlet and outlet. The VS8421 Millivolt Gas Valve has a 60,000 Btuh capacity (1 in. 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. Troubleshooting Honeywell Millivolt Valve, Troubleshooting the Gas Control System, Troubleshooting the Gas Control System, Vermont Castings, Majestic Products: DVR33, SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION 0000011989 00000 n 0000017288 00000 n 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. A place where magic is studied and practiced? 0000002780 00000 n Standard-, slow- and step-opening models available. 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. 0000005081 00000 n 0000012011 00000 n 0000013473 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. Combination screw and quick-connect terminals on TRADELINE models. Determine if the pilot burner requires a thermocouple with a push-in clip or attachment nut, and attach the correct adapter to the. So, to diagnose a gas valve, first check to see if the pilot light is on. Both should be under cap screws. Zero clearance sleeve is required only for combustible walls. The Robertshaw - Uni-Line 700-500 and 710-500 Series millivolt gas valves are thermostatically actuated com- bination gas valves. 0000004711 00000 n Test the voltage using an AC voltmeter. The VR8200 Continuous Pilot Dual Automatic Valve Combination Gas Controls are used in gas-fired, standing pilot appliances. 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. Models for natural or LP gas. Do not overtighten. 0000000016 00000 n Mount the gas control so gas flow is in the direction of the arrow on the bottom of the gas control. Take care when handling the refractory panels as they are fragile until held in place and supported. ECO connector included with some models: also available as an accessory. The pilot must be manually relit when normal burner operation is desired. Push in firmly to lock in place. 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. Never use any tools. A stuck valve could release gas into the air without regulation or the valve could cause the unit not to fire up at all. 0000006449 00000 n 0000011088 00000 n If resistance is outside of specifications listed, the gas valve must be replaced. The gas valve ( which came over with Christopher Columbus :laughing is finally seizing up/kaput. Avoid locating gas control where exposure to corrosive chemical fumes or dripping water are likely. Then tighten one more turn with a wrench. Install sediment trap in the supply line to the gas control. MILLIVOLT SYSTEMS Millivolt systems provide their own power, so do not require outside battery power or line voltage to operate. Maintenance frequency must be determined individually for each application. Turn the pressure regulator adjustment screw clockwise. If pilot burner flame still goes out, measure the open and closed thermocouple output voltage. IMPORTANT: The specifications given in this publication do not include normal manufacturing tolerances. 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? A normal reading will be in the range of 145 to 195 millivolts. Release button; the pilot should remain lit. Please comment and ask for videos that you would like to see in the future! What you are experiencing is why such adjustments are discouraged! We come out with new videos every few days from my job sites, service calls, and the training shop! 0000005616 00000 n Refer to Figs. 0000039900 00000 n 0000015431 00000 n If so, how close was it? TO LIGHT THE PILOT BURNERSTOP! When the thermostat calls for heat, the first automatic valve and the second automatic valve operator open. SIT 822 Valve with a Honeywell Electronic Igniter NOTE: Remove glass before servicing. 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. 10 Easy Things to Check When Troubleshooting a Furnace Gas Valve. Combination 1/4 inch quick-connect and screw terminals (includes convenience terminals).