Harsco Industrial SC-1500 Installation & Owner's Manual

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Harsco Industrial SC-1500 Installation & Owner's Manual Manual pdf 52 page image

P-K SONIC® Gas Fired BoilerTechnical Service 1.877.728.5351Revised: June 2, 2017Released: June 2, 2017 HARSCO Industrial, Patterson-Kelley 2017All Rights Reserved.1004905978 P-K SONIC NURO Installation andOwners Manual (Rev F Jun-2017).docxPage 43Adjusting High FireStart the boiler and observe proper operating parameters for the system.Access the “Manual Control Firing Rate”, as described above, andincrease the firing rate to 100%. Check combustion readings using thecombustion analyzer. If the combustion readings are not in accordancewith Section 3.11.2, adjust as follows:Required Tools: Flat head screwdriver/no 2.5 allen wrench,Combustion analyzer and water tube manometer.1. Using a slotted screw driver, set the maximum restrictor (high firescrew) on the outlet/shutter flange of the combination gas safetyshut off / control valve by turning clockwise or counterclockwise toachieve the desired CO2 or O2 level. To increase the O2 level,adjust towards the “-“ symbol to decrease gas flow. To decreasethe O2 level, adjust towards the “+” symbol to increase gas flow.2. There will be a slight time delay between the adjustment and theresponse of the CO2/O2 measuring instrument. Clockwise rotationdecreases gas flow. Counterclockwise rotation increases gas flow.Adjusting Low FireRequired Tools: 2.5 mm hex wrench and combustion analyzer.Start the boiler and observe proper operating parameters for the system.Set boiler to the “Manual Control Firing Rate” mode, as described above,and decrease the firing rate to 1%. Once the boiler has reached low fireoperation, check combustion readings using the combustion analyzer. Ifcombustion readings are not in accordance with the above table, adjustas follows:1. Using a 2 mm hex wrench, adjust the pressure regulator offsetadjustment (pictured above) to achieve the desired CO2 /O2 level.To increase the O2 level, adjust towards the “-“ symbol to decreasegas flow. To decrease the O2 level, adjust towards the “+”symbol to increase gas flow.2. Adjustments to the offset pressure regulator should not exceed ¼turn at a time before allowing the readings to respond and stabilize.Following all gas valve adjustments, check for proper light-off and verify correct fuel/air mix andcombustion quality throughout the entire firing rate (from low to high fire).Checking Flame SignalTouch the “Info” button in the lower left corner of the NURO display to load the “Information” menuwhich shows real-time read-only boiler values such as temperatures, relay states, etc. Scroll down the“Information” menu to find the “Flame Signal” value. This value displays the strength of the combustionflame (units = V) as measured by the ignition electrode/ionization probe. When the boiler is in standby,prepurge, or postpurge the flame signal should read 0V. During main flame, a strong flame signalshould read between 20-50V.Offset adjustmentNOTE: ALWAYS adjust high fire combustion first!