Compare it to the acceptable range charts in the thermocouple specifications or in the Gas Controls Handbook. Adjust the thermostat several degrees above room temperature. The electrical/scientific basis for millivolt systems is the Seebeck Seems my new millvolt gas valve turns off PILOT and MAIN BURNERS. If the gas control knob or reset button will not operate by hand, or if the reset button stays depressed after it is released, the gas control should be replaced by a qualified service technician. A forum community dedicated to Do it yourself-ers and home improvement enthusiasts. Troubleshooting a Furnace Gas Valve - Fox Family Heating & Air Both should be under cap screws. The main burner gas flow is blocked by both automatic valves. With the loss of outlet pressure, the second automatic valve closes and is held closed by spring pressure on the diaphragm. %PDF-1.5 % Dusty, wet, or corrosive environment. The combination of spring pressure under the second automatic valve diaphragm and the lack of outlet pressure holds the diaphragm firmly closed. Set the thermostat or the device's controller slightly above the current room temperature. Install the new plastic pressure regulator adjustment screw so that the top of the screw is flush (level) with the top of the regulator. Do not remove the existing window frame assembly. Where these instructions differ from the appliance manufacturer, follow the appliance manufacturer instructions.All wiring including 1/4 in. EASY FIXES! Push and hold down the red reset button (Figs. Straight-through body pattern; right-angle adapters available for inlet and outlet. Only the gas valve manufacturer or someone certified by the manufacturer of the gas valve can make repairs. Adjusting Honeywell VR8000 Series Gas Control Valves - YouTube 0000139520 00000 n 0000026478 00000 n How to Tell If a Honeywell Gas Valve Is Bad | Hunker 0000068133 00000 n 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. gas - Identify/troubleshoot this millivolt furnace valve - Home When making the conversion, the main pilot burner orifices must be changed to meet the appliance manufacturer specifications. Honeywell Gas Valve Code 5 Whirlpool Water Heater Flammable Vapor Sensor Lockout How To Reset Honeywell Water Heater Pilot Keeps Going out - CLEAN THE FILTER GRATE! honeywell millivolt gas valve troubleshooting From Gas Control Valve 1- Turn main gas on and proceed to next step. Any adjustments to gas control equipment should be checked using combustion efficiency test equipment by trained technicians. 250 items. the manual gas control knob is in the ON position. 0000055329 00000 n When the gas control knob is manually turned to OFF. CHECK SAFETY SHUTDOWN PERFORMANCEWARNING!FIRE OR EXPLOSION HAZARDS CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH.Perform the safety shutdown test any time work is done on a gas system. If you'd like to support the site, please allow ads. Set your voltmeter for the proper voltage that is, above 24 volts. 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. If you have additional questions, need further information, or would like to comment on our products or services, please write or phone: BODY PATTERN: Straight-through with 1/2 inch inlet and 1/2 inch outlet. 0000005081 00000 n Outstanding! If you have problems accessing your account, please contact us at 1-888-757-4774 and we'll help you out. If outlet pressure begins to rise, the pressure regulator the diaphragm moves slightly higher, allowing less gas flow to the gas control outlet. Never use any tools. PDF Robertshaw millivolt tests Refer to Fig. Read these instructions carefully. Do not bend tubing at gas control or pilot burner after compression fitting has been tightened, as this may result in a gas leakage at the connection. 0000041780 00000 n TRADELINE kits include a 9/64 in. With the main burner in operation, paint all pipe joints (including adapters) and gas control inlet and outlet with rich soap and water solution. 0000013008 00000 n When the thermostat calls for heat, the first automatic valve and the second automatic valve operator open. 2. WIRINGFollow the wiring instructions furnished by the appliance manufacturer, if available, or use the general instructions provided below. Did this satellite streak past the Hubble Space Telescope so close that it was out of focus? It has been obsolete for over 30 yrs now. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. 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. If it goes out, repeat steps 36. Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. The condition of the wiring is also suspect; loose connections, old oxidized control contacts, an old thermostat, are all potential problems. 0000126186 00000 n See Fig. If you don't test, it's just a. Models for natural or LPgas.ADDITIONAL FEATURES: STANDARD MODELSMODEL: VR8200 and VR4200 Continuous Pilot Dual Automatic Valve Combination Gas Controls. 0000072676 00000 n . Filter. Step 8. 0000017038 00000 n A consequence of unexpected shutdown. 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. 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'm wondering though if 750 mv is for all thermopiles..even my old one dating back to about the mid 50s??? WHEN THE CALL FOR HEAT ENDSWhen the call for heat ends, the first automatic valve and the second automatic valve operator close, bypassing the regulator(s) and hutting ff the main burner. 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. 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. If the appliance is a hot water heater but it's not firing up, the thermopile might be weak. Readjust the full rate outlet pressure if necessary to improve light off characteristics. Category: HVAC. Using Kolmogorov complexity to measure difficulty of problems? 54), whichever applies. Do not force the gas control knob on the appliance. Thanks. thatguy, I hear you. Slip the compression fitting over the tubing and slide out of the way. If the switches are good, that sort of defaults to a bad gas valve. Because gas is involved, problems with gas valves are a major safety concern. For a better experience, please enable JavaScript in your browser before proceeding. Paint all pipe connections upstream of the gas control with a rich soap and water solution. 0000028639 00000 n 0000016083 00000 n 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. 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. 0000006973 00000 n PRESSURE TAPPING: Inlet and outlet pressure taps accessible from the top of gas control. a. PDF Control Tips - Robertshaw Toolbox 2 or 3) clockwise. You may have to wiggle it a bit before it comes loose. (50/60 Hz models available on request. Why are Suriname, Belize, and Guinea-Bissau classified as "Small Island Developing States"? first the 360 millivolts you show should have been 750 to 800 millivolts since this is a pilot generator. The pilot light is auto so when the thermostat calls for heat, a spark is sent to the ignition lighting up the pilot. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. Force or attempted repair can result in fire or explosion. 0000023456 00000 n If it is, simply replace the igniter/flame rod assembly. I think I've had a service call on every millivolt system in my rentals.----I am debugging a Monessen millivolt gas valve. Place gas control knob in PILOT position. 0000019943 00000 n 0000137800 00000 n Learn more about Stack Overflow the company, and our products. 0000001116 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. While holding tubing all the way in, slide compression fitting into place and engage threadsturn until 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. PDF 95C-10024B - VS820 Powerpile Combination Gas Controls - SupplyHouse.com I show you how to Light the Pilot and Power the Main Burner! Remove the pilot adjustment cover screw. Home Honeywell Honeywell VR8200, VR4200 Combination Gas Controls User Guide. 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. Check the ratings given in the instructions and on the product to ensure the product is suitable for your application. 2 or 3) while you light the pilot burner. '', 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 the replacement spring with the tapered end down. It looks like you're using an ad blocker. startxref Dont touch any electrical switch or use the phone. Making statements based on opinion; back them up with references or personal experience. If resistance is outside of specifications listed, the gas valve must be replaced. 0000003373 00000 n Remove the thermopile wiring connector from the gas control. 0000012806 00000 n 0000062529 00000 n 13. A stuck valve could release gas into the air without regulation or the valve could cause the unit not to fire up at all. If you smell gas, immediately shut off the manual valve in the gas piping to the appliance or, on LP, at the tank. endstream endobj 11 0 obj <> endobj 12 0 obj <> endobj 13 0 obj <>stream 0000049205 00000 n If the O-ring is not attached or is missing, do not use the flange. TO LIGHT THE PILOT BURNERSTOP! By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Tighten the screws to 25 inch-pounds of torque to provide a gas-tight seal. Install ThermocoupleThe Q340A Thermocouple (with adapters) is provided with SUPER TRADELINE models of the VR8200A. 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. This includes a WIRING DIAGRAM. Does that indicate more a gas valve problem or a thermopile generator/pilot flame problem? 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. JavaScript is disabled. 0000002780 00000 n 0000016105 00000 n The minimum regulated capacity is 20 feet 3 /hour [0.6 meters 3 /hour]. Release button; the pilot should remain lit. A bad gas valve in a Honeywell appliance such as a water heater or furnace that is powered by natural gas can go bad and affect the performance of the unit. WARNINGFIRE OR EXPLOSION HAZARDS CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH. 0000016758 00000 n 750 Millivolt Furnace Thermopile Replacement - The Home Depot By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. hb``Pc`` _Ps400! Then tighten one more turn with a wrench. This increases gas pressure under the automatic valve and repositions the valve disc closer to the seat. 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. Connect the pipe to gas control inlet and outlet. How to Check the Furnace Gas Valve With a Multimeter | Hunker Follow these warnings exactly: CAUTIONNever apply a jumper across or short the valve coil terminals. Check the wiring between the thermocouple and the gas control valve operator. The diaphragm-operated second automatic valve opens under the control of the regulator and closes if gas or power supply is interrupted. The gas valve cannot be repaired in the field. 0000034510 00000 n Attempted disassembly or repair may damage the gas control. TABLE 5MAXIMUM LENGTH OF SUPPLEMENTARY LIMIT LEAD WIRES WHEN USING Q340A THERMOCOUPLE. 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. Turn the gas control knob counterclockwise. Support horizontal pipes every 3 (91 cm) with metal pipe straps. 4 41 Good reading is 0 to 0.2 Ohms . On LP installations, use compound resistant to LP gas. Pilot gas flows through a port in the ushing around the reset button shaft to the pilot burner. Adjust the thermostat several degrees higher than your current room temperature. For use in standing pilot appliances. We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. 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. 0000137823 00000 n . 0000007857 00000 n 0000031358 00000 n Check your instruction manual to determine the voltage that should be running at your control valve circuit. Proper gas valve adjustment can save your home from a devastating fire. Supervision is needed by a licensed HVACR Tech while doing this as Experience and Apprenticeship garners Wisdom and Safety.Tool List- https://www.amazon.com/shop/acservicetechSupport- https://www.patreon.com/acservicetechWe've Partnered with TruTechTools.com! rating 1/2 psi [3.5 kPa] inlet pressure.PRESSURE REGULATION: See Table 1. Connect and share knowledge within a single location that is structured and easy to search. Tubing installation must comply with approved standards and practices. 4 0 obj <> endobj Except for the 123 mV this circuit is pretty well obvious. 0000044905 00000 n Circuit Millivolt Check Symptom - Intermittent shutdown or main burner will not light with on/off switch. As with the millivolt system, you'll be testing a series of components to locate the faulty part. 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. Choose the appropriate flange for your application. Natural to LP gas conversion kit included with TRADELINE standard and slow-opening models. This is an electrical connection and must be clean and dry. Place one meter lead to soldered point on back of valve and one to ground. 0000060689 00000 n Read the safety information in the WARNING.This appliance has a pilot burner, which must be lit by hand. 0000006141 00000 n Gas valve troubleshooting looks for a problem. Outlet pressure to the main burner increases gradually from 0 in. I go over how it is Wired, wha. Do not make sharp bends or deform the tubing. GAS CONTROL KNOB SETTINGSThe gas control knob has three settings:OFF: Prevents pilot and main burner gas flow.PILOT: Permits pilot gas flow only. 0000043015 00000 n 0000012919 00000 n Turn the inner adjustment screw clockwise. What is a word for the arcane equivalent of a monastery? Refer to the Adjust the Pilot Burner Flame section. Unscrew compression fitting from the pilot outlet (Fig. A. Thermocouple-Only: Found in: Most gas log sets with standard safety pilot knob control. Square off and remove burrs from the end of the tubing. [10 to 13 mm] of the thermocouple tip. Bubbles indicate a gas leak. The three-position manual gas control knob has ON, OFF, and PILOT positions. 0000036872 00000 n This diverts gas flow from the automatic valve diaphragm and causes a reduction of pressure on the underside of this diaphragm. Troubleshooting an IID control system calls for an AC voltmeter with a 220-volt range or greater. If the voltage is dead or not as rated, replace the valve. As for the gas valve it is probably a "general controls" valve but any 800 millivolt gas valve can be used as a replacement. Why Do the Burners Work but the Oven Does Not Work on My Gas Stove. If the knob or reset button will not operate by hand, replace the control using a qualified service technician. These Videos are all part of our Training Series on HVACR Service, Installation, Preventative Maintenance, General Knowledge, and Tips. The ON position allows pilot burner and main burner gas low under control of the thermostat and the two automatic valves. 0000011045 00000 n Because gas is involved, problems with gas valves are a major safety concern. Prices are the same as normal- https://www.amazon.com/shop/acservicetech When purchasing replacement and modernization products from your TRADELINE wholesaler or your distributor, refer to the price sheets for complete ordering number, or specify. At least having yours done professionally would appear to put you in a position of a tax deduction for repairing it. 0000004324 00000 n Check the pilot burner flame adjustment. TRADELINE MODELSTRADELINE models are selected and packaged to provide ease of stocking, ease of handling and maximum replacement value. The VS8421 Millivolt Gas Valve has a 60,000 Btuh capacity (1 in. This may burn out the heat anticipator in the thermostat. Zero clearance sleeve is only required for combustible walls. 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]. I was trying to use the "MILLIVOLT TROUBLESHOOTING CHART", on page 2 of this . If the reset button does not pop up when released, stop immediately and call your service technician or gas supplier. Where the cost of an unexpected shutdown would be high, the system should be checked more ften. 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. For the VR4200, make sure the conduit cover is in position and secured to the gas valve with the screw provided. 0000010874 00000 n 0000026083 00000 n (supposedly so they could fix them :yes: ), Cool. 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. PDF Gas valves with ods pilots, thermocouples and thermopiles - Desa Tech This is a legacy product document supported by Resideo.This product is no longer manufactured. 0000003019 00000 n Loss of power closes the automatic valves, but leaves the pilot lit, ready to return to normal service when power is restored. Relight pilot burner and operate the system through one complete cycle to assure all controls operate properly. 1/2 in. 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 problem I'm having is very simple. Helping You to Do It Yourself! %PDF-1.3 % 0000028590 00000 n Advertisement Yes, there is one screw to adjust the gas to the pilot and another to adjust the gas to the main burner. There is a heat anticipator coil in there which limits current to the valve, and shorting that out can damage the valve. Check the regulator setting either with a manometer or by clocking the gas meter. Gas control is a safety device. *If higher than 35mv check connections and switch. 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. 0000060666 00000 n Mutually exclusive execution using std::atomic? 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. If either of the switches is bad, no go. The first automatic valve opens, and the second automatic valve operator valve disc is lifted off its seal. 30 0 obj <>/Filter/FlateDecode/ID[<07B8336975034BD12756FE90D2FD37D3>]/Index[10 37]/Info 9 0 R/Length 96/Prev 25390/Root 11 0 R/Size 47/Type/XRef/W[1 2 1]>>stream Your problem seems to involve large -- really large -- "industrial size" issues. This is a very useful thread and am learning a lot from it partly because of my situation with my current Weil McClain boiler. 10 Easy Things to Check When Troubleshooting a Furnace Gas Valve. https://www.trutechtools.com/?affid=43 Use our Promo Code: \"acservicetech\" for 8% off your order! After the adapter is installed, the gas control is attached to the adapter as outlined above. 0000062506 00000 n Use a wrench on the square ends of the 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. Connect control circuit to gas control terminals. See Fig. Insert and tighten the screws provided with the flange. 0000026384 00000 n 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. If it is re-energized within 60 seconds, it may bypass or shorten the length of the low-pressure step. Turn the pressure regulator adjustment screw clockwise. By creating an account you agree to the Hunker, How to Light the Pilot Light on a Honeywell VR8200. ' b1?T3/0.!0s.2c7oDp!c{|87*G2s>y~O9SNF. JavaScript is disabled. If the inlet pressure is in the normal range (refer to Table 7 or 8), replace the existing gas control. 0000052168 00000 n TABLE 7PRESSURE REGULATOR SPECIFICATION PRESSURES IN INCHES WC. Troubleshooting Honeywell Millivolt Valve, Troubleshooting the Gas Control System, Troubleshooting the Gas Control System, Vermont Castings, Majestic Products: DVR33, SYMPTOM POSSIBLE CAUSES CORRECTIVE ACTION 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. %PDF-1.3 % For screen reader problems with this website, please call 1-800-430 . Do I need a thermal expansion tank if I already have a pressure tank? pressure drop for straight-through configuration). The Thermopile, energized by the pilot flame, generates sufficient power to operate the gas valve and on/off switch. 0000011836 00000 n . Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). Then the regulator valve is forced fully open by the timing diaphragm, which is operated by bleed gas. 0000013496 00000 n WARNING!FIRE OR EXPLOSION HAZARDS CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH. The low-pressureregulator maintains outlet pressure at the preset step rate for several seconds. hb``b``r` LT, bBPQ%@AL;LiaP2l3 2 Ensure the ambient temperature does not exceed the ambient temperature ratings for each component. wc [0 kPa] to rated output pressure within 3-6 seconds (for an 80,000 Btuh furnace at 7 in. I would recommend replacing all the wiring and controls and the pilot generator. hex wrench, as noted.PILOT GAS OUTLET: Compression fitting for 1/4 in. Wiring terminal block color-coded beige to identify standing pilot models. If an adapter is used, place the wrench on the adapter rather than on gas control. PDF TROUBLESHOOTING MILLIVOLT GAS VALVES - Keating of Chicago 0000002263 00000 n This makes it ideal for fireplace and space heating uses that are vent free. Is a PhD visitor considered as a visiting scholar? 0000066936 00000 n ECO connector included with some models: also available as an accessory. Why are physically impossible and logically impossible concepts considered separate in terms of probability? Maintenance frequency must be determined individually for each application. 0000002189 00000 n Refer to Fig. Mount the gas control 0-90 degrees, in any direction, from the upright position of the gas control knob, including vertically. Otherwise, take the necessary steps to provide proper gas pressure to the gas control. It must measure at least 19.5VAC with the igniter powered. SIT 822 Valve with a Honeywell Electronic Igniter NOTE: Remove glass before servicing. Always replace the cover screw after adjustment and tighten firmly to assure proper operation. Solenoid-operated first automatic valve opens on thermostat call for heat and closes when the call for heat ends. to protect them and prevent gas from leaking, and discourage tampering by untrained people. 46 0 obj <>stream 0000000016 00000 n Apply a moderate amount of good quality pipe compound to bushing, leaving two end threads bare. What you are experiencing is why such adjustments are discouraged! If another gas leak is detected, tighten adapter screws, joints, and pipe connections. The VR8200 Continuous Pilot Dual Automatic Valve Combination Gas Controls are used in gas-fired, standing pilot appliances. Some considerations are: Cycling frequency. Appliances that are used seasonally should be checked before shutdown and again before the next use. Resistance between THTP & TP must be 10.0 W 0.2 W A normal reading will be in the range of 145 to 195 millivolts. We might be able to do something about it. Always install horizontal venting on a level plane. This category contains Honeywell SmartValve, Gas Controls, Millivolts, Pressure Regulators, Gas Control Parts and Industrial Gas Valves. Jimbo, Thanks for that tip. Voltage drop across the switch terminals Burner on: 35 mv or less. The gas control is likely to have operated for more than 200,000 cycles. For the battery test above only connect the battery for a second or two just to see if the gas valve works. 0000010088 00000 n wc [1.8 kPa] inlet pressure and 3.5 in. The pilot must be manually relit when normal burner operation is desired. Ever notice how civil DIY'ers are, generally? Cycle the main burner several times, allowing at least 30 seconds between cycles for the regulator to resume the step function. 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. See Fig. 10 0 obj <> endobj Thermopile readings: With all wires connected, with the pilot on and burners off, the thermopile reading at the TP & THTP terminals should be ~325mV. Check the power supply rating on the valve and make sure it matches the available supply. This is How to Wire the Thermopile to The 750mv Gas Valve for the Pilot and Main Gas Burners.