Power-Fin 250-1000 Literature - Lochinvar

Gas FiredBoilersLOWNOXNOX88% Thermal EfficiencyCompact DesignMultiple Venting OptionsCategory II Venting

The High-Efficiency,High-Output Compact BoilerThe Power-Fin’s unique approach to boiler design meansbenefits everyone will enjoy. For the installer, it meanslighter weight and easier servicing. And end-userseverywhere will appreciate the significant energy savingsand fast, accurate response to the call for heat.What’s more, unit capacities range as high as 1,000,000Btu/hr but require just 5.75 sq. ft. of floor space. Only thePower-Fin—with its high efficiency output—can offersuch heavyweight performance in a boiler so compact.Here’s how.Unique Circular Copper-Fin ® Heat ExchangerAt the heart of this unit is our circular Power-Fin heatexchanger. Using a special process, the outer wall of thecopper tube is precision extruded to form exactly 7 fins perinch. The result is anintegrateddesign with aheat transferratio that is 9times greaterthan ordinary coppertubing.To create the combustionchamber, these highlyefficient copper tubes aresecured by two high-gradecast iron headers ina circular pattern—completely surrounding theflame. This not onlyensures optimumefficiency, it alsoeliminates the need fora bulky refractory lining.Finally, the entire assembly is hydrostatically-tested, ASMEstamped and approved for 160 psi working pressure.The Advantages Of Sealed CombustionAnother feature contributing to the remarkable efficiencyof the Power-Fin boiler is its unique combination of a sealedchamber and fan-assisted combustion. This design allows theamount of intake air to be precisely metered to match gasinput for better, cleaner and more complete combustion. Andthe unique burner design projects flames in a full 360° pattern.The combustion air fan serves a dual function byproviding the exact volume of combustion air as wellby Lochinvar ®as inducing a continuous flow of cooling air around thecombustion chamber. Pre-purge and post-purge cyclesprovide added protection, while a pressurized, sealedchamber prevents spillage of gas and combustionby-products.Diagnostic Systems And ControlsTo ensure fail-safe operation, every major function of thePower-Fin is automatically controlled and checked by aconvenient plug-in control panel with advanced diagnosticfeatures. A series of relays, warning lights and provingswitches continually monitor each phase of the system’soperation.These not only warn against boiler failure, they actuallyhelp pinpoint the source of any problems—fromcombustion air or low gas pressure, to water temperature orwater flow.We also designed the Power-Fin with our own fuel-savingHot Surface Ignition. And a convenient built-in temperatureresistant glass viewing port allows for visual checks ofignition and burner operation.Compact, Accessible DesignThe Power-Fin gives you the best of both worlds:high efficiency and a compact design. In fact, our onemillion Btu/hr system requires just 5.75 square feet of floorspace—making it a designer’s dream. Plus, its highefficiency and unique circular heat exchanger eliminates theneed for a bulky refractory lining. So at just over 700pounds, it’s an installers’ dream too.For added flexibility, the Power-Fin is approved for zeroclearance installations and offers five convenient ventingoptions from which to choose. Both vertical and horizontaldirect-vent sealed combustion configurations are available,as well as venting for outdoor applications.The Power-Fin is designed for faster servicing, too. Thebolted header inspection cover on all models can be easilyremoved for field inspection of tube interiors. And the entireheat exchanger can be removed through the front of theboiler.2

Modular FlexibilityWith input capacities from 250,000 to 1,000,000, Btu/hrthere’s a Power-Fin boiler to meet every need. And ourexclusive Mod-U-Pak TM sequencer gives you the flexibilityto create larger systems. As demand increases, additionalunits can easily be added for greater flexibility.A single sequencing controller monitors and providesstage-firing for up to eight separate boilers. Multiple devicescan even be combined to control more units—for virtuallyunlimited capacity. This makes it possible to meet peakdemands, while also reducing system wear and achievingmaximum energy savings during off-peak periods.FT / HDPressure Drop Chart181716151413121110987651,000,000 BTU/HR250,000 BTU/HRBoiler Output Boiler Output Btu FuelBtu/hr @ 75% @ 88% Savings Year One SavingsModel Rated Thermal Thermal per Hour Fuel Over 5Number Input Efficiency Efficiency of Operation Savings YearsPBNO250 250,000 187,500 220,000 32,500 $320 $1,599PBNO500 500,000 375,000 440,000 65,000 640 3,198PBNO750 750,000 562,500 660,000 97,500 959 4,797PBN1000 1,000,000 750,000 880,000 130,000 1,279 6,396Fuel savings calculated a $0.66 per therm.Based on 1500 hours of operation per year.432100 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100Boiler Temperature Rise Chart95908580Power-Fin PerformanceWhat’s more, the Power-Fin operates condensate-freewith boiler water temperatures as low as 150°F or, whencombined with a simple external piping by-passarrangement, at system temperatures as low as 80°F with nodamage to the boiler.With it’s instantaneous response and high heat transferratio, the Power-Fin is ideal for water source heat pumpsystems. In fact—thanks to a small footprint, 88% thermalefficiency, and greater installation options—the Power-Finis perfect for almost every application. And it’s onlyavailable from Lochinvar.T TEMPERATURE RISE75706560555045403530252015105100075050025000 5 10 15 20 25 30 3540 45 50 55 60 65 70 75 80 85 90 95 100GPMVenting OptionsConventional Vent:Power-Fin may be ventedinto a conventional flueor vent breaching if itis convenient andcost-effective. RequiresCategory II venting.Through-Wall Vent:Provides a quick and easymeans of installation whenno vent stack is readilyavailable.Direct Vent/SealedCombustion:Combustion air is drawninto the heater fromout-of-doors, then exhaustis vented back out throughthe same wall. Especiallygood for contaminatedindoor air situations.Vertical Vent/SealedCombustion:Provides the advantages ofdirect venting in a verticalconfiguration.Outdoor:An all-weather system foreven the most ruggedoutdoor applications. Usewhen space is not availableor when outdoor locationprovides better access to hotwater point-of-use.3

Power-Fin ® Boilers Dimensions & SpecificationsF23"FRONTVIEWING PORT36" TOP VIEWELEC.CONN.GASCONN.BACK VIEWINLET OUTLET6"VENT DIA.INLETDIA.AFOR EASE IN ORDERINGBY MODEL NUMBERPB N 0250 F9ModelNatural GasMBH InputFiring ControlsGDEThis is a 250,000 Btu/hrnatural gas Power-Fin boilerwith F9 firing controls.11 1/2"Model Btu/hr Btu/hr A D E F G Gas Air Inlet ShippingNumber Input Output Conn. Size WeightPBN0250 250,000 220,000 34" 16-1/4" 20-1/4" 5" 28-1/4" 3/4" 8" 460PBN0500 500,000 440,000 41-1/2" 24-1/4" 26-1/2" 5" 35-1/2" 1" 10" 520PBN0750 750,000 660,000 52-1/2" 33-1/4" 25-1/2" 6-1/2" 40-1/4" 1-1/4" 12" 615PBN1000 1,000,000 880,000 60-1/2" 41-1/4" 28-1/2" 8-1/2" 47-1/2" 1-1/2" 14" 650Notes: Change ‘N’ to ‘L’ to denote L.P. models. All water connections are 2”.U.S. and Foreign patent numbers 3650248 and 4723513Performance data based on manufacturer test results.VENT DIAMETERConventional† Through Wall* Direct Vent**5" 4" 4"7" 6" 6"9" 8" 8"10" 10" 10'† Requires Category II venting material.* Requires factory supplied venting material.** Requires factory supplied venting material and concentriccombustion air intake piping (Inlet diameter).Standard Features• 88% Thermal Efficiency• Aquastat with Adjustable Differential• Sequential & Diagnostic Control Panel• Radial Stainless Steel Burner• Low NOx Operation Exceeds the mostStringent Air Quality Requirements• ASME Copper Finned Tube Heat Exchanger• 160 PSI Working Pressure• Glass-Lined Water Surfaces• Two Water Temperature Gauges (inlet/outlet)• Redundant Gas Valves• Main Gas Pressure Regulator• Low Gas Pressure Switch• High & Low Air Pressure Switches• Hot Surface Ignition• Adjustable High Limit with Manual Reset• Down Stream Test Cock• Zero Clearance to Combustible Materials• ASME Pressure Relief Valve• Flow Switch• Small Footprint• 24 Volt Control System• Barometric Damper• 10 Year Limited Warranty on Heat ExchangerAvailable Firing SystemsF9 Hot Surface Ignition withElectronic Supervision (Standard)F13 Factory Mutual (FM)F14 Industrial Risk Insurers (IRI)(PB 0500 - 1000)F7 California CodeOptional Equipment• Alarm Bell• Contacts for Air Louvers• Contacts on any Failure• Cupro-Nickel Heat Exchanger• High or Low Gas Pressure Switch• Indoor/Outdoor Control• Low Water Cut-Off• Pump Relay• Solenoid Gas Valve• Time ClockMod-U-Pak Sequencer• 2-6 Stage• 7-10 Stage• Indoor/Outdoor ResetPBN-02Lochinvar Corporation • 300 Maddox Simpson Pkwy • Lebanon, TN 37090 • 615-889-8900 / Fax: 615-547-1000www.Lochinvar.com45M-2/04-Printed In U.S.A.