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Resumen del manual
All mechanical equipment needs occasional attention. The boiler should be inspected, cleaned and if necessary, adjusted once a year. We recommend that your serviceman be called as he has been trained for the job and will have the necessary instruments to check your boiler. This will assure you that the operation of your heating system will remain highly efficient. Your Weil-McLain boiler will give you a lifetime of heating comfort, if you follow the few simple suggestions listed on this card. FILLING STEAM AND WATER BOILERS Do not fill the boiler (except for leakage tests) until the boiler is ready to be fired. CAUTION: Do not add large quantities of cold feed water to any hot boiler! Steam Systems: The boiler should be filled to the normal water line and fired for about 15 minutes at a low rate sufficient to keep the boiler at steaming temperature with the steam vented to drive off dissolved gases (also see Skimming Steam Boilers). Water Sytems: The boiler and the entire system should be filled and heated to approximately 210°F for about 15 minutes to drive off dissolved gases. Before filling the system, make sure all the system air vents are closed. Open the hand water feed valve and beginning on the lower floor, open the air vents (one at a time) until water starts to flow; then, close the vent. Repeat this throughout the building until all heat distributing units are filled with water. Close the hand water feed valve when the correct boiler pressure is reached. After the system is in operation, keep the system filled with water by occasionally opening the air vents allowing any entrapped air to escape and adding enough make up water to maintain the correct system pressure. If your system is provided with a purge valve located in the system return piping, connect a garden hose to the drain valve located above the purge valve. Close the purge valve and open the hand water feed valve and allow the system to purge all air. Where the system has more than one circuit, purge each circuit separately by opening each balancing valve one at a time. When the system is purged of all air, close the drain cock located above the purge valve and open the purge valve. Fill the boiler and the entire system to the correct pressure. Air in the system can interfere with circulation of water and prevent the heat distributing units from properly heating. IF BOILER FAILS TO START, CHECK THE FOLLOWING 1. Check for loose connections and blown fuses. 2. Be sure the high limit control setting is above the boiler temperature or pressure. 3. Make sure that gas is turned on at meter. 4. Be sure pilot is burning. 5. Make sure manual main shut-off valve is open. 6. If the above checks do not eliminate the trouble, call in your serviceman. MEASURE GAS INPUT TO BOILER For proper aspiration, the gas pressure at the burner manifold should be at least 3.5 inches water column for natural gases and 11.0 inches water column for propane gases. Measure the gas input to the boiler by reading the rate of flow at the gas meter. Be sure any other appliances connected to the same meter are shut off. The measured rate of flow in cubic feet per hour multiplied by the heating value in B.T.U. per cubic foot of the gas employed should check with the A.G.A. design certified input shown on the boiler rating plate. If the actual input is within 5 percent of the rated input, adjust the gas pressure regulator to obtain the required gas flow. To adjust the gas input, remove the cap on the pressure regulator and turn the adjusting screw clockwise to increase the gas flow or counter-clockwise to decrease the gas flow. If the actual input is more than 5 per cent off the rated boiler input, change orifice sizes and again measure the gas input to the boiler. TO START THE BOILER 1. Be sure the main electric switch in the boiler electrical circuit is turned to the off position. 2. CAUTION: Make sure that the manual main shutoff valve and the pilot valve have been closed for at least five minutes before lighting the safety pilot burner. 3. Remove the jacket door and access panel. 4. Follow the “Starting up Boiler Instructions” on the operating instruction plate which is mounted on the Jacket Panel. SKIMMING STEAM BOILERS All new boilers and steam and water piping contain oil, grease, chips, and other foreign matter. It is essential to clean new steam heating boilers to remove these materials in order to avoid overheating of boiler metal, foaming and priming, and high maintenance costs on strainers, traps, and vents. The boiler installer should use the following procedure to clean oil, grease, and other impurities from the new boiler. 1. Close the valve in the building steam supply main(s). 2. Provide a full sized skim line, with valve, from the Form MC-1486-1271WM boiler skim tapping and run this line to a convenient floor drain. 3. Fire the boiler at a low rate sufficient to keep the boiler at steaming temperature allowing the steam, along wit...