While taking a Millivolt reading on a safety magnet, disconnect thermocouple & wires from the valve. Repeat after allowing the main burner to cool. hb``Pc`` _Ps400! 0000023456 00000 n 0000027628 00000 n PROVIDE DISCONNECT MEANS AND OVERLOAD PROTECTION AS REQUIRED. TABLE 7PRESSURE REGULATOR SPECIFICATION PRESSURES IN INCHES WC. d7Pq~XxqJea6`^ Ys4Y/{ 5. 0000137800 00000 n Below are my tests: Adjust the thermostat several degrees higher than your current room temperature. Push tubing into the pilot gas tapping on the outlet end of the control until it bottoms. Installation of Logs and Lava Rock Material. Combination 1/4 inch quick-connect and screw terminals (includes convenience terminals). This category contains Honeywell SmartValve, Gas Controls, Millivolts, Pressure Regulators, Gas Control Parts and Industrial Gas Valves. To check for gas pipe leaks, put soap on the pipe connecting to the valve, if it bubbles, it means there's leakage. To ensure proper operation, follow these guidelines: Locate the gas control in the appliance vestibule on the gas manifold. Helping You to Do It Yourself! 10 0 obj <> endobj SIT 822 Valve with a Honeywell Electronic Igniter NOTE: Remove glass before servicing. I hope you enjoy and find them very beneficial! If another gas leak is detected, tighten adapter screws, joints, and pipe connections. Circuit Millivolt Check Symptom - Intermittent shutdown or main burner will not light with on/off switch. You should NOT short out the t'stat terminals to check it. 12Wiring connections for 120-volt control. I think I've had a service call on every millivolt system in my rentals.----I am debugging a Monessen millivolt gas valve. Choose the appropriate flange for your application. The boiler comes on twice a day - morning and night. TROUBLESHOOTING MILLIVOLT GAS VALVES PART # 023625 (NATURAL) & 023624 (LP) TroubleMillvoltGasV 04/16 . Open the manual gas switch if the gas valve fails to operate and look to see if gas is flowing to the main burner or pilot. [10 to 13 mm] of the thermocouple tip. The best answers are voted up and rise to the top, Not the answer you're looking for? *If higher than 35mv check connections and switch. If the inlet pressure is in the normal range (refer to Table 7 or 8), replace the gas control. Push in firmly to lock in place. Light the main burner. Where these instructions differ from the appliance manufacturer, follow the appliance manufacturer instructions.All wiring including 1/4 in. I would verify the valve type - It would either be the SIT 820 or the Honeywell VS8420. Any help and/or comment would be greatly appreciated. In this HVAC Furnace Video, I go over the Operation and Troubleshooting of a 750 Millivolt Gas Valve and Thermopile/PowerPile. Note that using an adapter increases the overall length of the gas control. Readings outside this range indicate the gas valve is defective and must be replaced. 14 when the: The power unit holds the safety shutoff valve disc off its seat, so gas can flow into the control. 2 or 3) while you light the pilot burner. With the main burner in operation, paint all pipe joints (including adapters) and gas control inlet and outlet with rich soap and water solution. Both should be under cap screws. Draw yourself the circuit. A consequence of unexpected shutdown. Square off and remove burrs from the end of the tubing. The condition of the wiring is also suspect; loose connections, old oxidized control contacts, an old thermostat, are all potential problems. The generator, heated by the pilot burner flame, pro- . These Videos are all part of our Training Series on HVACR Service, Installation, Preventative Maintenance, General Knowledge, and Tips. Proper gas valve adjustment can save your home from a devastating fire. When the pilot goes out or becomes too small to sustain normal ignition. What you are experiencing is why such adjustments are discouraged! If resistance is outside of specifications listed, the gas valve must be replaced. Refer to Fig. )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. 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? If it is flowing, measure the voltage between the 24V Hot and 24V Common leads to the SmartValve. Fig. 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. I recommend you call a heating expert. ADJUST THE PILOT BURNER FLAMEThe pilot flame should envelop 3/8 to 1/2 in. 0000013473 00000 n 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. Combination screw and quick-connect terminals on TRADELINE models. 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! 1/2 in. Turn the gas control knob (Figs. See Accessories.CAPACITY: 130 feet 3 /hour [4.2 meters 3 /hour]. 0000026384 00000 n Release button; the pilot should remain lit. One 3/4 inch straight flange assembly (with O-ring and screws). 0000139215 00000 n 394349 9/64 inch hex tool for flange assembly screws. 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. Install the Q340A asfollows: Connect ThermocoupleConnect thermocouple lead as shown in Fig. Connect the pipe to gas control inlet and outlet. It may not display this or other websites correctly. After the adapter is installed, the gas control is attached to the adapter as outlined above. 0000068110 00000 n This includes a WIRING DIAGRAM. 0 Never use any tools. (50/60 Hz models available on request. And, it was very cost competitive to other non-Honeywell thermopiles. If it is, simply replace the igniter/flame rod assembly. 0000005748 00000 n 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. Determine if the pilot burner requires a thermocouple with a push-in clip or attachment nut, and attach the correct adapter to the. Is there a solution to add special characters from software and how to do it. (supposedly so they could fix them :yes: ). %PDF-1.5 % Inlet and outlet pressure taps included; both taps accessible from the top of gas control. This is an electrical connection and must be clean and dry. Fig. See Table 1 for model specifications.SUPPLY VOLTAGE:VR4200: 120 Vac, 60 Hz.VR8200: 24 Vac, 60 Hz. Thermostat and gas control main burner gas flow.NOTE: Gas controls are shipped with the gas control knob in the ON position. Push and hold down the red reset button (Figs. Turn off the main gas supply to the appliance. 0000034533 00000 n If the inlet pressure is in the normal range (refer to Table 7 or 8), replace the existing gas control. Order separately: pilot burner, thermocouple, transformer, limit controller, and thermostat or controller as required. Do not force the gas control knob. VR8200 for use with 24 Vac heating appliances and VR4200 for use with 120 . Troubleshooting the valve and looking for known common issues will give you peace of mind by ensuring the safe operation of your Honeywell appliance. I'm wondering though if 750 mv is for all thermopiles..even my old one dating back to about the mid 50s??? 0000011045 00000 n If it is re-energized within 60 seconds, it may bypass or shorten the length of the low-pressure step. Is it correct to use "the" before "materials used in making buildings are"? This may burn out the heat anticipator in the thermostat. The pilot light is auto so when the thermostat calls for heat, a spark is sent to the ignition lighting up the pilot. Support horizontal pipes every 3 (91 cm) with metal pipe straps. What is a word for the arcane equivalent of a monastery? The main burner should go off and the pilot should remain lit. Before lighting, smell all around the appliance area for gas. 0000010088 00000 n If so, how close was it? Refer to Figs. rev2023.3.3.43278. Why Do the Burners Work but the Oven Does Not Work on My Gas Stove. 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. xref to protect them and prevent gas from leaking, and discourage tampering by untrained people. When the pilot remains lit, turn the gas control knob counterclockwise. Assure the main gas supply valve is open and the pilot gas supply line is purged of air. Filter. Thanks. 0000012919 00000 n I show you how to Light the Pilot and Power the Main Burner! rating 1/2 psi [3.5 kPa] inlet pressure.PRESSURE REGULATION: See Table 1. 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. I am trying to diagnose a problem with an old furnace. Good reading is 0 to 0.2 Ohms . Never use any tools. Dusty, wet, or corrosive environment. 0000005594 00000 n The servo pressure regulator monitors outlet pressure to provide n even the main burner gas flow. 1/4-inch male quick-connect terminals for electrical connections. 0000012695 00000 n There should not be a flame-up there if the valve is working correctly. Do not remove the existing window frame assembly. Prices are the same as normal- https://www.amazon.com/shop/acservicetech This is How to Wire the Thermopile to The 750mv Gas Valve for the Pilot and Main Gas Burners. This shuts off the pilot and main burner gas flow. Set your voltmeter for the proper voltage that is, above 24 volts. 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. 244 0 obj << /Linearized 1 /O 247 /H [ 2388 392 ] /L 541180 /E 139793 /N 4 /T 536181 >> endobj xref 244 91 0000000016 00000 n Only the gas valve manufacturer or someone certified by the manufacturer of the gas valve can make repairs. POWER SUPPLY. Turn the gas control knob counterclockwise. If you then smell gas in the appliance area or near the floor in an LP installation, immediately shut off the manual valve in the gas piping to the appliance or, with LP, shut off at the tank. 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. So, to diagnose a gas valve, first check to see if the pilot light is on. %%EOF 4 41 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 VR8200 Continuous Pilot Dual Automatic Valve Combination Gas Controls are used in gas-fired, standing pilot appliances.