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VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. *If higher than 35mv check connections and switch. 0000017038 00000 n 0000001836 00000 n Fig. Natural to LP gas conversion kit available for nonTRADELINE standard and slow-opening models. Step 8. 0000066914 00000 n xref 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. This type of gas valve used a single thermocouple. Do not overtighten. (See Fig. <<50A7D4D2F74D8141B7F3BE8FD5737B51>]/Prev 36635>> MILLIVOLT SYSTEMS Millivolt systems provide their own power, so do not require outside battery power or line voltage to operate. If necessary, adjust the pressure regulator to match the appliance rating. IF THE PILOT BURNER FLAME GOES OUT WHEN THE GAS CONTROL KNOB IS RELEASED, IF THE MAIN BURNER WILL NOT COME ON WITH A CALL FOR HEAT. Choose the appropriate flange for your application. ny outlet pressure change is immediately reflected back to the pressure regulator diaphragm, which repositions to change the flow rate through the regulator valve and, thus, through the diaphragm-operated automatic valve. There should not be a flame-up there if the valve is working correctly. 0000011045 00000 n . Two convenience terminals on top of control(optional). Honeywell VR8200, VR4200 Combination Gas Controls, Honeywell C437F1052 Auto Recycle Gas/ Air Pressure Switch Installation Guide, Honeywell Portable Single Gas Detector User Manual, RYOBI RY802925 PSI Gas Pressure Washer User Guide. 0000016105 00000 n This shuts off the pilot and main burner gas flow. Below are my tests: Pilot gas flow should stop within 2-1/2 minutes. The gas control must be manually reset. Do NOT use Teflon tape. 0000005081 00000 n OD tubing. And, it was very cost competitive to other non-Honeywell thermopiles. Thermostat and gas control main burner gas flow.NOTE: Gas controls are shipped with the gas control knob in the ON position. 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. 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]. Tubing installation must comply with approved standards and practices. I am trying to diagnose a problem with an old furnace. Any adjustments to gas control equipment should be checked using combustion efficiency test equipment by trained technicians. The maximum regulated capacity is 200 feet 3 /hour [5.7 meters 3 /hour]. 0000006740 00000 n Apply a moderate amount of good quality pipe compound (Do not use Teflon tape) to pipe only, leaving two end threads bare. 0000023456 00000 n 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. Regulator adjustment is accessible from top of gas control.MOUNTING: Can be mounted 0 to 90 degrees in any direction from the upright position of the gas control knob, including vertically.TEMPERATURE RATING:VR8200A,C,H,J; VR4200A,C,H: 0 F to +175 F [-18 C to +79 C].VR8200M,P; VR4200M,P: -40 F to +175 F [-40 C to +79 C]. A1/{;_Fe o(*=`. Voltage drop across the switch terminals Burner on: 35 mv or less. Gas valves nowadays are one piece with 100% shutoff for the pilot flame gas and shutoff valve etc all in one valve. 0000004302 00000 n I tried that once already, but I won't again. 6. DO NOT JUMPER THESE TERMINALS. 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. WARNING!FIRE OR EXPLOSION HAZARDS CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY OR DEATH.Do not disassemble the gas control; it contains no replaceable components. 0000039877 00000 n Now I'm sure my problem's the thermopile. If a gas leak is detected, tighten the pipe connection. 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. 0000002388 00000 n 0000139215 00000 n [10 to 13 mm] of the thermocouple tip. Is a PhD visitor considered as a visiting scholar? When the ow pressure regulator is fully open, the high-pressure regulator maintains the desired full-rate outlet pressure as described for the standard regulator.The step model requires approximately 60 seconds to reset once the main burner goes off. Dont touch any electrical switch or use the phone. This type of gas valve used a single thermocouple. In replacement applications, locate the gas control in the same location as the old gas control. Refer to Table 7 or 8 for factory-set nominaloutlet pressures and adjustment ranges. Does that indicate more a gas valve problem or a thermopile generator/pilot flame problem? Except for the 123 mV this circuit is pretty well obvious. Honeywell Gas Valves. 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. Your problem seems to involve large -- really large -- "industrial size" issues. Your system is quite old and somewhat unsafe, in that the pilot comes off ahead of the safety valve. rev2023.3.3.43278. Wait five minutes to allow any gas in the combustion chamber to vent. IF THE MAIN BURNER IS OVERFIRINGAdjust the gas control pressure regulator to the correct pressure. Refer to Fig. 0000036895 00000 n 0000001377 00000 n As for the gas valve it is probably a "general controls" valve but any 800 millivolt gas valve can be used as a replacement. 0000057714 00000 n TABLE 6MAXIMUM LENGTH OF SUPPLEMENTARY LIMIT LEADWIRES WHEN USING Q309A THERMOCOUPLE. This is How to Wire the Thermopile to The 750mv Gas Valve for the Pilot and Main Gas Burners. 0000012011 00000 n 0000060666 00000 n The electrical/scientific basis for millivolt systems is the Seebeck 0000000016 00000 n Push tubing into the pilot gas tapping on the outlet end of the control until it bottoms. 0000042992 00000 n 0000026455 00000 n 0000011836 00000 n I show you how to Light the Pil. 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 Lv 4. 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. Fig. Your email address will not be published. Seems my new millvolt gas valve turns off PILOT and MAIN BURNERS. Always install horizontal venting on a level plane. 0000019943 00000 n Unscrew compression fitting from the pilot outlet (Fig. Refer to Table 7 or 8 for the factory-set nominal outlet pressures and adjustment ranges. Connect the pipe to gas control inlet and outlet. 0000027369 00000 n %%EOF PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. 0000023590 00000 n Always install sediment trap in gas supply line to prevent contamination of gas control. Paint all pipe connections upstream of the gas control with a rich soap and water solution. Resistance between THTP & TP must be 10.0 W 0.2 W 0000031358 00000 n Gas control is a safety device. If the inlet pressure is in the normal range (refer to Table 7 or 8), replace the gas control. You must log in or register to reply here. 2 or 3) clockwise. Ensure the installer is a trained, experienced service technician. If the red reset button stays depressed after it is released, replace the gas control. If tubing is used, ensure the ends are square, deburred and clean. A stuck valve could release gas into the air without regulation or the valve could cause the unit not to fire up at all. 6 terminals + 2 jumpers = 4 effective terminals = 4 nodes. 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. Millivolt systems have been the industry standard for decades, and are in some ways simpler to troubleshoot than electronic ignition systems. Refer to Fig. If it is flowing, measure the voltage between the 24V Hot and 24V Common leads to the SmartValve. 0000126186 00000 n What is a word for the arcane equivalent of a monastery? 0 0000049228 00000 n When the thermostat calls for eat, the first automatic valve and the second automatic valve operator are energized. Home Honeywell Honeywell VR8200, VR4200 Combination Gas Controls User Guide. Bashing my head against the walls in some of the internet's finest chat rooms. 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. 0000139520 00000 n This makes it ideal for fireplace and space heating uses that are vent free. For a better experience, please enable JavaScript in your browser before proceeding. Filter. See Fig. Both pilot and main burner are shut off. Extinguish pilot flame. After the adapter is installed, the gas control is attached to the adapter as outlined above. Never use any tools. 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 0000072676 00000 n Required fields are marked *. The gas valve part numbe read more By creating an account you agree to the Hunker, How to Light the Pilot Light on a Honeywell VR8200. See Fig. inlet and 1/2 inch outlet; adapters available for 3/8 or 3/4 inch. PERFORM GAS LEAK TEST WARNING!FIRE OR EXPLOSION HAZARDS CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH.Check for gas leaks with rich soap and water solution any time work is done on a gas control. 0000001836 00000 n - Reg. 0000003581 00000 n Making statements based on opinion; back them up with references or personal experience. This product was the perfect replacement for the Honeywell thermopile in a circa 1975 gas fireplace unit. So in short, I get heat both times of the day for say an hour and it just sits idle with the pilot lit. The Thermopile, energized by the pilot flame, generates sufficient power to operate the gas valve and on/off switch. Your Purchases through Amazon provide a means for channels such as mine to earn advertising fees from any purchases after clicking through. The gas valve cannot be repaired in the field. You should NOT short out the t'stat terminals to check it. Good Reading Bad Reading In the "Resources for understanding gas valves" thread in the HVAC forum, someone wanted to know how a gas valve worked. Jumping between the TP/TH and TH does NOT turn the main burner on. If an adapter is used, place the wrench on the adapter rather than on gas control. Euler: A baby on his lap, a cat on his back thats how he wrote his immortal works (origin?). At least having yours done professionally would appear to put you in a position of a tax deduction for repairing it. Thanks. Allow the appliance to run through one complete cycle to ensure that the controls are functioning in the correct manner. If the appliance is a hot water heater but it's not firing up, the thermopile might be weak. 0000011088 00000 n 0000002780 00000 n This valve is only for vent free applications. 0000008826 00000 n 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. Helping You to Do It Yourself! Natural to LP gas conversion kit included with TRADELINE standard and slow-opening models. Vermont Castings, Majestic Products: DVR33, Window Frame Assembly Should be Removed Before Service Work, Troubleshooting Honeywell Millivolt Valve, Homeowner's Installation and Operating Manual. Apply a moderate amount of good quality pipe compound to bushing, leaving two end threads bare. Solenoid-operated first automatic valve opens on thermostat call for heat and closes when the call for heat ends. 2). So, to diagnose a gas valve, first check to see if the pilot light is on. wc [1.8 kPa] inlet pressure and 3.5 in. For your safety, read the following warnings before lighting the appliance: WARNING: BEFORE DOING ANY GAS CONTROL SERVICE WORK, REMOVE GLASS FRONT. With the main burner in operation, paint all pipe joints (including adapters) and gas control inlet and outlet with rich soap and water solution. If the reset button does not pop up when released, stop immediately and call your service technician or gas supplier. 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. 0000010088 00000 n How do you ensure that a red herring doesn't violate Chekhov's gun? 0000137800 00000 n Determine if the pilot burner requires a thermocouple with a push-in clip or attachment nut, and attach the correct adapter to the. If another gas leak is detected, tighten adapter screws, joints, and pipe connections. To ensure proper operation, follow these guidelines: Locate the gas control in the appliance vestibule on the gas manifold. Cycle the main burner several times, allowing at least 30 seconds between cycles for the regulator to resume the step function. 12Wiring connections for 120-volt control. Remove the burner access panel if provided on your appliance. 10Installing thermocouple to the power unit. 0000002189 00000 n 0000002119 00000 n Attempt to light pilot burner flame following procedures in the Light the Pilot Burner Flame section. 13. WHEN THE THERMOSTAT CALLS FOR HEATThe gas control allows pilot and main burner gas flow during the thermostat ON cycle, as shown in Fig. If the O-ring is not attached or is missing, do not use the flange. the manual gas control knob is in the ON position. 0000026478 00000 n Advertisement May be installed at any angle between 0 and 90 degrees from the upright position, including vertically. If you have not I will give some ideas. Ensure the main burner lights smoothly and without a flashback to the orifice and that all ports remain lit. on Honeywell VR8200, VR4200 Combination Gas Controls User Guide, Honeywell Humidity Controllers User Guide, Honeywell S8910U Universal Hot Surface Ignition Module User Manual. Taps are 1/8 inch NPT with a plug containing recess for 3/16 inch Allen wrench.PRESSURE RATING: A.G.A. SPECIFICATIONS Main Gas Connection: Valve: 3/8 in. Set the thermostat or the device's controller slightly above the current room temperature. 0000003019 00000 n Check if gas is flowing if you turn on the gas and the pilot burner doesn't light. When the pilot goes out or becomes too small to sustain normal ignition. CONVERTING BETWEEN NATURAL AND LP GAS WARNING!FIRE OR EXPLOSION HAZARDS CAN CAUSE PROPERTY DAMAGE, SEVERE INJURY, OR DEATH. Insert bushing in gas control and thread pipe carefully into bushing until tight. Readjust the full rate outlet pressure if necessary to improve light off characteristics. A stuck valve could release gas into the air without regulation or the valve could cause the unit not to fire up at all. Otherwise, take the necessary steps to provide proper gas pressure to the gas control. All adjustments, wiring connections, and pilot outlets are accessible from the top of the gas control. Thermopile readings: With all wires connected, with the pilot on and burners off, the thermopile reading at the TP & THTP terminals should be ~325mV. If the knob or reset button will not operate by hand, replace the control using a qualified service technician. The pilot will remain lit, ready for return to normal service without relighting.COMPLETE SHUTDOWN: Turn the gas control knob clockwise to OFF. If the appliance uses LP (bottled) gas, be sure to smell next to the floor because LP gas is heavier than air. For screen reader problems with this website, please call 1-800-430 . With O-ring facing the gas control, align the screw holes on the gas control with the holes in the flange. Place one meter lead to soldered point on back of valve and one to ground. 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. Troubleshooting the valve and looking for known common issues will give you peace of mind by ensuring the safe operation of your Honeywell appliance. It has been obsolete for over 30 yrs now. 0000001317 00000 n When the pilot goes out, the thermocouple current drops and the power unit drops out, closing the safety shutoff valve. 0000098789 00000 n Zero clearance sleeve is required only for combustible walls. The problem I'm having is very simple. If desired outlet pressure or flow rate cannot be achieved by adjusting the gas control, check the inlet pressure using a manometer at the inlet pressure tap or upstream of the gas control. Check the ratings given in the instructions and on the product to ensure the product is suitable for your application. Bulk update symbol size units from mm to map units in rule-based symbology. See Figs. Replace the thermocouple if voltages are outside the acceptable range. Some considerations are: Cycling frequency. Force or attempted repair can result in fire or explosion. 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. 0000012919 00000 n Then the regulator valve is forced fully open by the timing diaphragm, which is operated by bleed gas. Works with the majority of millivolt gas valves; Push-in clip for easy installation included; . Combination screw and quick-connect terminals on TRADELINE models. There is a heat anticipator coil in there which limits current to the valve, and shorting that out can damage the valve. It may not display this or other websites correctly. We come out with new videos every few days from my job sites, service calls, and the training shop! Relight pilot burner and operate the system through one complete cycle to assure all controls operate properly. SIT 822 Valve with a Honeywell Electronic Igniter NOTE: Remove glass before servicing. Pilot gas flows through a port in the ushing around the reset button shaft to the pilot burner. Gas valves are not serviceable; the following are simple troubleshooting and description of how gas valves operate. Do not secure conduit cover at this time. I have an old millivolt gas furnace that's stopped working. The diaphragm-operated second automatic valve opens under the control of the regulator and closes if gas or power supply is interrupted. If you'd like to support the site, please allow ads. If the gas control knob or reset button will not operate by hand, the gas control should be replaced by a qualified service technician. The PILOT position allows pilot burner gas flow only. Do not thread pipe too far. The pilot works fine but the main burner does not come on by the wall mounted thermostat or the manual on/off switch. Assure thermocouple connection to the power unit is tightened 1/4 turn beyond finger tight. For the battery test above only connect the battery for a second or two just to see if the gas valve works. 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. 7.). 0000028590 00000 n The servo pressure regulator monitors outlet pressure to provide n even the main burner gas flow. The first automatic valve opens, and the second automatic valve operator valve disc is lifted off its seal. It looks like you're using an ad blocker. The gas control knob must be held depressed or the thermocouple must be heated sufficiently to hold the safety control valve open.ON: Permits main burner and pilot gas flow. If either of the switches is bad, no go. Assure the gas control knob is in the ON position. . ' b1?T3/0.!0s.2c7oDp!c{|87*G2s>y~O9SNF. 0000034510 00000 n The opening is slowed because a gas flow restrictor in the passage from the second automatic operator slows the rate at hich gas pressure is reduced under the second automatic valve diaphragm after the automatic operator opens. Mutually exclusive execution using std::atomic? This is an electrical connection and must be clean and dry. These controls combine a manual gas cock, automatic pilot safety valve and a millivolt operator. A place where magic is studied and practiced? 0000041802 00000 n THEY ARE NOT INTERNALLY WIRED TO THE CONTROL CIRCUIT OR TO THE GROUND. Check your instruction manual to determine the voltage that should be running at your control valve circuit. What sort of strategies would a medieval military use against a fantasy giant? Use only your hand to push down the reset button or turn the gas control knob. There must be two terminals in this connector block that powers the gas valve coil. Use new, properly reamed pipe free from chips. TRADELINE MODELSTRADELINE models are selected and packaged to provide ease of stocking, ease of handling and maximum replacement value. I have some pictures to help clarify what I have, a ThermoPILE system. Use only glass approved by Vermont Castings, Majestic Products on this fireplace. 0000004421 00000 n Since these environments can cause the gas control to deteriorate more rapidly, the system should e checked more often. Read the safety information in the WARNING.This appliance has a pilot burner, which must be lit by hand. CONVENIENCE TERMINALS SERVE AS A TIE POINT ONLY. 0000010874 00000 n 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! One Q340A 36-inch thermocouple with adapters and clip. hb``Pc`` _Ps400! In many such applications, particularly commercial cooking, the equipment operates 100,000-200,000 cycles per year. Carefully check the main burner light off at the step pressure. 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. 0000055306 00000 n 0000012806 00000 n See Accessories.CAPACITY: 130 feet 3 /hour [4.2 meters 3 /hour]. If it isn't flowing, replace the SmartValve. Maintenance frequency must be determined individually for each application. 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. The low-pressureregulator maintains outlet pressure at the preset step rate for several seconds. But it has been reliable for a long time. thatguy, I hear you. wc [0 kPa] to rated output pressure within 3-6 seconds (for an 80,000 Btuh furnace at 7 in. 14 when the: The power unit holds the safety shutoff valve disc off its seat, so gas can flow into the control. For use in standing pilot appliances. 0000002758 00000 n Zero clearance sleeve is only required for combustible walls. When the pilot remains lit, turn the gas control knob counterclockwise. Capacity rated at 130 feet 3 /hour at 1-inch WC pressure drop [3.7 m 3 /hr at 0.25 kPa]. Gas valves exposed to high ammonia conditions, i.e., those used in greenhouses or animal barns may fail in one or two years. 54), whichever applies. Read these instructions carefully. They include a safety shutoff, a manual valve, two automatic operators, a pressure regulator, a pilot adjustment, and a conduit cover (VR4200 only). Light the main burner. Assure the main burner primary air supply is properly adjusted for complete combustion (refer to the appliance manufacturer instructions). 0000005594 00000 n Thus, the flow of gas through the second automatic valve is increased, and outlet pressure rises to the desired level.Slow-Opening Pressure Regulation (VR8200H and VR4200H); Delayed and Slow-opening Regulation (VR8200J)Slow-opening gas controls function the same as standard models except that when the thermostat calls for heat, the second automatic alve pens gradually. If something is wrong with the internal components of the gas valve, the gas valve should be replaced. 0000006677 00000 n 0000003838 00000 n If it is re-energized within 60 seconds, it may bypass or shorten the length of the low-pressure step. Appliances that are used seasonally should be checked before shutdown and again before the next use. Remove the thermopile wiring connector from the gas control. To adjust the pilot flame: LIGHT MAIN BURNERFollow the appliance manufacturer instructions or set the thermostat setting above room temperature to call for heat. ADJUST THE PILOT BURNER FLAMEThe pilot flame should envelop 3/8 to 1/2 in.