Eclipse ThermJet Burners for Preheated Combustion Air - Power ...

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Key to system schematicsSYMBOL APPEARANCE NAME REMARKSBULLETIN/INFO GUIDEThermJet burnerMain gasshut-offvalve trainMain gas shutoff valve trainEclipse, Inc. strongly endorsesNFPA as a minimum.756Combustion air blowerThe combustion air blowerprovides the combustion airpressure to the burner (s).610PAir pressure switchThe air pressure switch givesa signal to the safety systemwhen there is not enough airpressure from the blower.610NCGas cockSolenoid valve(normally closed)Gas cocks are used to manuallyshut off the gas supply on bothsides of the main gas shut-offvalve train.Solenoid valves are used toautomatically shut off the gassupply on a bypass gas system oron small capacity burner systems.710760Manual butterfly valveManual butterfly valves are usedto balance the air or gas flow ateach burner, and/or to control thezone flow.720Automatic butterfly valveAutomatic butterfly valves aretypically used to set the output ofthe system.72020 Eclipse ThermJet PCA Design Guide No. 206, 3/5/07
Key to System Schematics (Continued)SYMBOL APPEARANCE NAME REMARKSBULLETIN/INFO GUIDERatio regulatorA ratio regulator is used tocontrol the air/gas ratio. Theratio regulator is a sealed unitthat adjusts the gas flow in ratioto the air flow.742ControllerA controller senses pressure andcontrols flow.CCRS valveA CRS valve is used in a high/low time-proportional controlsystem to quickly open and closethe air supply.744Pressure tapsThe schematics show the advisedpositions of the pressure taps.Impulse lineThe impulse line connects theratios regulator to the air supplyline.Heat Exchanger/EductorThe heat exchanger/eductorrecovers wast heat fromindustrial exhaust gases. Therecovered heat is used topreheat combustion air forthe systems burners, therebyincreasing fuel efficiency.Eclipse ThermJet PCA Design Guide No. 206, 3/5/0721
Page 1 and 2: Design Guide 2063/5/07Eclipse Therm
Page 4: DocumentConventionsThere are severa
Page 7 and 8: Safety2IntroductionSafetyImportant
Page 9 and 10: System Design3DesignDesign structur
Page 11 and 12: Step 2: Control Methodology(continu
Page 13 and 14: Step 3: Ignition SystemFor the igni
Page 15 and 16: Step 5: CombustionAir System: Blowe
Page 17 and 18: Example BlowerCalculation(Continued
Page 19: AppendixConversionFactorsMetric to

Eclipse ThermJet Burners for Preheated Combustion Air - Power ...

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