NINFA锅炉中文样本
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锅炉的中文翻译资料技术规格型号:NUK-HP 700设计:垂直的,自然循环式锅炉饱和蒸汽输出:1717kg/h热输出:700kw加热表面积:39m2锅炉水: 按照专门规定处理锅炉水含量: 512升蒸汽冷凝系统的总容量必须等于锅炉容量或高于锅炉容量的1.5倍.锅炉水容量膨胀: 加热时,从20C/1 bar到291C/75 bar=37% 容量测试压力: 175 bar设计压力: 80 bar最大操作压力: 75 bar在80bar时饱和蒸汽温度: 296C热效率: 约86%(操作压力为65bar)压力测试: 冷水压力测试管材:不锈钢35.8 I,材料号 1.0305(管直径为60.3mm,压力80bar)不锈钢35.8 Ⅲ,材料号1.0305 (管直径大于60.3mm,压力大于80bar)分气包:1个蒸汽出口喷嘴,管88.9x8.8-焊接端1个法兰DN25/PN160/DIN2638,供安全阀和安全膜的安装2个U-型管,用于安装压力表和限压器冷凝管1个冷凝进口管口,管88.9x8.8-焊接端1个U-型管,用于安装压力表2个带螺纹连接的管口,用于安装两个低位电极1个止回阀R 1/2”用于低温和无压力状态下的低位测试,1个疏水阀和注入阀DN25/PN160烟气连接: 圆形的,带法兰和反法兰锅炉框架:金属表面,手动除锈,不含油脂和灰尘1个底漆为防腐涂料,带成分为磷酸锌颜色的干膜,厚度约为35my tone:RAL 6011木犀草绿色2个有光泽防水面漆,在醇酸树脂底涂合成树脂青漆,干膜厚度为70 my tone:RAL7001-银灰色锅炉盖板:金属表面,手动除锈,不含油脂和灰尘2个耐热面漆,硅铝色调:银色安全附件的规格型号:1个装弹簧的安全阀法兰连接: 入口DN25,PN160, DIN2638出口DN50, PN40, DIN 2635设置压力:根据80/95 bar压力系统来定1个蒸汽压力表:刻度范围0-250 bar1个带测试接口的压力表阀:DIN 16271 A型连接R1/2”。
目录CONTENTSⅠ概述 (1)Ⅰ General (1)Ⅱ主要技术参数 (1)Ⅱ Main technical parameters (1)Ⅲ.结构特点及工作原理:(参看附图1) (2)Ⅲ.Construction and working principle (See Fig.1) (2)Ⅳ.设备的安装(参阅总图) (3)Ⅳ. Installation of equipment (See the general drawing) (3)Ⅴ试车 (3)Ⅴ Commissioning (3)Ⅵ运行与维护 (4)Ⅵ Running and maintenance (4)Ⅶ易损件明细 (5)Ⅶ Wearing parts (5)附图1 XGS1009型倾斜式滚动筛煤机结构图 (6)Fig.1 Construction drawing of XGS1009 (6)附图2 设备基础图 (7)Fig.2 Foundation drawing of Equipment (7)Ⅰ概述Ⅰ GeneralXGS1009型倾斜式滚动筛煤机是我厂新开发的筛煤机械,是目前我国火力发电厂输煤系统中广泛选用的筛煤设备之一。
XGS1009 inclined roller screen is a new developed coal screening machine by our plant. It is one of screening equipment which are widely used in the coal conveying systems in Chinese thermal electric power plants.该产品具有结构合理、筛分效率高、噪音低、无振动、无粉尘、不堵煤、维修方便等特点。
This product has advantages of rational construction, high screen efficiency, low noise, no vibration, free of dust, free from clogging or jamming, easy maintenance and so on.Ⅱ主要技术参数Ⅱ Main technical parametersⅢ.结构特点及工作原理(参看附图1)Ⅲ.Construction and working principle (See Fig.1)1.结构特点:Construction:滚动筛主要由前筛箱、后筛箱、下筛箱、筛轴及煤挡板五部分组成。
工业锅炉使用说明书Industrial Boiler Operation InstructionsCS-SM8一、前言Preface本说明书适用于工作压力《2.5Mpa,蒸发量《35t/h的工业锅炉。
This book is suitable for the boiler with capacity ≤35t/h, and working pressure ≤2.5MPa.1、本说明书仅作为用户在制定运行规程中的参考资料。
This boos is written as per the boiler specifications and only for reference to the operation regulations of boiler.2、有关燃料部分、传动部分使用说明,请另见炉排,炉排传动装置,碎渣机使用说明书。
The operation instruction of fuel and driven part shall see details on the books of stoker, grate driven device and slag crusher.3、本说明书如与国家颁布的有关规程有抵触,以上级规程为准,建议用户单位注意参阅。
If there is something in this book against the regulations, subject to the superiors regulations.二、锅炉升火Boiler Firing(一)、升火钱的检查准备 Preparing before firing1、炉墙不允许有凸出裂缝,所有看火孔、人孔、吹灰孔等均需关严。
The furnace wall is not allowed to be cracked. All the fire holes, manholes and ash holes shall be closed.2、所有烟道及风道的挡板,闸门等位置应正确,开关要灵活。
Serie 4, Forno da incasso, 60 x 60cm, AcciaioHBA534BR0Accessori integrati1 x Griglia combinata, 1 x Leccarda universale smaltataAccessori opzionaliHEZ634000 Griglia combinata 455x375x31 mm (LxPxA), HEZ636000 Leccarda in vetro 455x364x30 mm (LxPxA), HEZ638000 Guide telescopiche clip a 1 livello, HEZ660050 Accessory, HEZ664000 Griglia combinata 455x375x59 mm (LxPxA), HEZ915003 Pirofila in vetro con coperchio 5,4 l., HEZG0AS00 Cavo di collegamento 3m, HEZ317000 Teglia per pizza, HEZ327000 Pietra per pane e pizza, HEZ333001 Coperchio per leccarda extra profonda, HEZ530000 2 leccarde slim 455x188x39 mm (LxPxA), HEZ531000 Leccarda bassa 455x375x30 mm (LxPxA), HEZ531010 Leccarda antiaderen455x375x30mm (LxPxA), HEZ532000 Leccarda profonda 455x375x38 mm (LxPxA), HEZ532010 Leccarda antiaderen 455x400x38mm (LxPxA), HEZ533000 Leccarda profonda 455x375x81 mm (LxPxA), HEZ538000 Guide telescopiche clip a 1 livello, HEZ629070 Teglia per grigliare adatta a pirolisi, HEZ633001 Coperchio per tegame professionale, HEZ633070 Tegame professionale Cottura HotAir 3D: risultati perfetti di cottura grazie alla distribuzione omogenea del aria al interno della cavità, che consente di cucinare fino a 3 livelli allo stesso tempo.• Display digitale LED rosso: facile e comodo da utilizzare.• Pulizia EcoClean su parete posteriore: un modo semplice, ecologico, sicuro ed economico per la pulizia della parete posteriore del forno durante la cottura, senza alcun detergente o agente chimico.Dati tecniciTipologia costruttiva del prodotto: .....................................Da incasso Sistema di pulizia: ..................................Idrolisi, 1 pannello catalitico Dimensioni del vano per l'installazione (AxLxP): 585-595 x 560-568 x 550 mmDimensioni (AxLxP): ............................................595 x 594 x 548 mm Dimensioni del prodotto imballato (AxLxP): .......675 x 690 x 660 mm Materiale del cruscotto: ...................................................acciaio inox Materiale porta: ..........................................................................vetro Peso netto: ..............................................................................31.0 kg Volume utile: .................................................................................71 l Metodo di cottura: .Grill a superficie grande, Aria calda delicata, aria calda, Riscaldamento statico, Funzione pizza, riscaldamento inferiore, grill ventilatoMateriale della cavità: .................................................................Altro Regolazione della temperatura: ..........................................Meccanico Numero di luci interne: (1)Lunghezza del cavo di alimentazione elettrica: .....................120.0 cm Codice EAN: (4242005033768)Numero di vani - (2010/30/CE): (1)Classe di efficienza energetica: .........................................................A Energy consumption per cycle conventional (2010/30/EC): ........0.97 kWh/cycleEnergy consumption per cycle forced air convection (2010/30/EC):0.81 kWh/cycleIndice di efficienza energetica (2010/30/CE): ..........................95.3 % Potenza: ..................................................................................3400 W Corrente: .....................................................................................16 A Tensione: .............................................................................220-240 V Frequenza: ...........................................................................50; 60 Hz Tipo di spina: ..........................................................................Schuko Accessori inclusi: .......1 x Griglia combinata, 1 x Leccarda universale smaltataSerie 4, Forno da incasso, 60 x 60cm, AcciaioHBA534BR0Cottura HotAir 3D: risultati perfetti di cottura grazie alla distribuzione omogenea del aria al interno della cavità, che consente di cucinare fino a 3 livelli allo stesso tempo.- Eco Clean: parete posteriore- Display digitale LED rosso- Orologio elettronico con impostazione inizio e fine cottura- Regolazione della temperatura da 50 °C a 275 °C- Illuminazione interna alogena- Volume cavità: 71 l- <8088brandlookup_nl(TUE,- KIN, SIK, SIB, REW, STA, TKS)>- Ventola tangenziale di raffreddamento- Assorbimento massimo elettrico: 3.4 kW- Dimensioni apparecchio (AxLxP): 595 mm x 594 mm x 548 mm- Dimensioni nicchia (AxLxP): 560 mm - 568 mm x 585 mm - 595 mm x 550 mm- Si prega di fare riferimento alle quote d'installazione mostrate nel disegno tecnicoEtichetta energetica- Classe di efficienza energetica (acc. EU Nr. 65/2014): A(in una scala di classi di efficienza energetica da A+++ a D)- Consumo energetico per ciclo durante funzionamento convenzionale:0.97 kWh- Consumo energetico per ciclo durante funzionamento ventilato:0.81 kWh- Numero di cavità: 1 Tipo di alimentazione: elettrica Volume della cavità:71 lDimensioniSerie 4, Forno da incasso, 60 x 60cm, Acciaio HBA534BR0。
SPECIFICATION FOR BUTTERFLY VALVE (MANUAL ) 1. The specification Contains :Part I - Standard Requirement , Page : 2 & Data Sheet : 1Part II A - Vendor check listPart II B - Special contract requirements.2. If the requirement of part II B is differing with part I. The requirement of part II B will be mandatoryVendor should fill up the Part II after studying Part I and submit along with offer.3.Vendor should fill up the Part II datasheet if any after placement of order and submit for approval.4.Vendor offer will be rejected if part II is not filled up and submitted with offer or incomplete submission.PREPARED BY: K.B.Choudhury CHECKED BY:C.PalanisamyAPPROVED BY :K.P.A.Jaffer AliDATE:30.04.1997REV No. DETAILS REVISED BY APPROVED BY DATESPECIFICATION FOR AIR LINE BUTTERFLY VALVE (MANUAL )Tenderer shall offer for the butterfly valve confirming to the following specifications. Tenderer to state clearly with reasons, wherever deviating from the specification:-1. Application :Isolating the cooling / sealing air lines to various equipment.2. Ambient conditions:a. The ambient air is normally dust laden:b. Ambient temp. 70 deg C max.:3. Flow data through the valve:a. flow medium : Ambient airb. Operating pressure : 1500mm W.C.gc. Operating temp. : Ambientd. Allowable pressure drop at max. flow with the valve in fully open position : 10 to 20 mm w.c ( max.)e. Shut off pressure : 1800mm W.C.g.4. Valve construction :a. Body : A536/IS 210 Gr.25 or equivalent.b. Shaft : Stainless steel.c. Valve flap material : Alloy steel or SS for resistance to corrosion.d. Bushes, gland or stuffing box. : Stainless steel, with packing, if necessary.e. Sealing material : Nitrile or BUNA ‘N’5. General requirements :a. The flap shall be minimum of 5 mm thickness plate. Shaft flap and bushing shall be well aligned and balanced for easyoperating and of leak proof gland packing. End connection shall be suitable for mounting between flanges ( WAFER TYPE).b. Valve to be suitable for mounting either in horizontal or in vertical piping.c. The butterfly valve must be capable of being locked in any position, suitable locking device to be provided.d. Valve sizes NB 300 and below shall be provided with hand levers and all other higher size valves shall be provided with gear unit.e. Seat leak tightness and leakage through glands shall be as per API-598 standards.6. Inspection and testing:-a. Materials used for various components shall be as called for and certified.b. Valve body shall be hydraulic tested at 5.5 kg/cm2 (g)c. Seal leak test for valve at 1.5 times the shut off pressure.7. Marking:a. Stainless steel nameplates with following boldly engraved shall be firmly fixed to the body;Suitable local indicators for open/ closed position of the valve.Maker’s name and production serial number; service;BHEL material code ; Type ,size & rating of body ; Size of disc.b. Each spare shall be individually tagged with part name, maker’s name & spare code and BHEL material code.8. Paintinga. All interior surfaces applied with rust preventive oil ,following hydraulic test and drying.b. All exposed surfaces degreased ,derusted and epoxy coated.9. Packinga. All openings ( fluid,pneumatic and electric ) shall be firmly capped.b. Valves shall be seaworthy packed in wooden boxes with water proof under cover.c. Liberal packing material & struts shall be provided to arrest rolling & to protect from transit damages.10. Documents to be furnished by the supplier along with the offer:-a. Filled up specification sheet.b. Three sets of general assembly drawing showing clearly the arrangement of all the components.c. Catalogues and other relevant documents and drawings of the components of the assembly.d. Spares offer for two years trouble free operation for butterfly valves.11. Documents to be furnished along with the supply:-a. 3 copies of the approved drawing and one reproducible print.b. Test and material certificates of the components.c. 6 sets of operation and maintenance manuals with illustrated figures.12. Guarantee:Performance guarantee for a period of one year from the date of commissioning or 18 months from the date of supplywhichever is earlier.DATA SHEET FOR BUTTERFLY VALVE (MANUAL)IIA BHEL SPECIFICATION0.01.0 SERVICE Isolating the cooling / sealing air lines1.1 Flow max. Ncu.m/hr1.2 Inlet pr. Normal / Max. mmWC1.3 Allowable DP mmWC1.5 Temp. Normal / Max. 30 / 70 deg C1.6 CV Reqd. @ 100% open1.7 Valve CV rating1.8 Valve opening / closing time <5 Sec.2.0 VALVE MAKE & TYPE2.1 Valve size overall : L x b x h x x mm2.2 Valve / Disc Type Wafer type / butterfly2.3 Flange ( provided by BHEL ) NB ANSI Class 1502.4 Ends Suitable to mount between flanges2.5 Body rating Class 1502.6 Body Material carbon steel (cast/ fabricated)material2.7 Disc2.8 Seatmaterial2.9 Stem material Stainless steel2.10 Seal material2.11 Packing material2.12 Stem size2.13 Seat leak class As per API 598 stds.2.14 Leakage thro’ glands2.15 Torque required for Butterfly valve operation2.16 Weight of entire valve assemblies3.0 Type of Bearings4.0 Lubricant5.0 JUNCTION BOX45.1 Enclosure NEMA6.0 RecommendedsparesPREPARED BY (VENDOR) DATE APPROVED BY ( BHEL) DATEPART- IIA: VENDOR CHECK LIST FOR BUTTERFLY VALVE (MANUAL )BHEL MATERIAL CODE : ENQUIRY No.:IIA BHEL SPECIFICATION VENDOR CONFIRMATION1.0 Service Isolating cooling / sealing air1.1 Flow max. Ncu.m/hr1.2 Inlet pr. Normal / Max. mmWC1.3 Allowable DP mmWC1.4 Temp. Normal / Max. deg C1.5 CV Reqd. @ 100% open1.6 Valve CV rating1.7 Valve opening / closing time Sec.2.0 Valve size overall Lxbxh x mm2.1 Valve / Disc Type Wafer type / Butterfly2.2 Ends To suit flanges2.3 Flanges (BHEL ) NB ANSI Class 1502.4 Body rating Class 1502.5 Body Material A536/IS 210 Gr.25 or Equivt.2.6 Valve Flap material : Alloy steel / Stainless steel2.7 Bushes,gland,stuffing box : Stainless steel2.8 Packing material vendor to specify2.9 Seat leak class As per API-598 Stds2.10 Leakage thro’ glands vendor to specify3.0 Type of bearings4.0 Lubrication5.0 Junctionbox vendor to specify45.1 Enclosure NEMA6.0 Marking6.1 Stainless steel name plate6.2 Each spares shall be individually tagged7.0 Painting7.1 Interior surface with rust preventive oil7.2 Epoxy coated over red oxide primer8.0 Packing8.1 All opening shall be firmly capped.8.2 Seaworthy packed in wooden boxes.9.0 TestCertificates9.1 Body hydraulic test9.2 Seat Leak Testtest9.3 Material9.4 Standard performance test9.5 Dimensionaltest9.6 Chemical composition test10.0 Documents enclosed :10.1 O & M manuals10.2 Complete dimensional drawings10.3 Quality plan10.4 Spares identification Drgs.BHEL VENDORPREPARED BY APPROVED BY DATE PREPARED BY APPROVED BY DATEPART- IIA: VENDOR CHECK LIST FOR BUTTERFLY VALVE (MANUAL )BHEL MATERIAL CODE : ENQUIRYNo.:IIB SPECIAL CONTRACT REQUIREMENT, IF ANYBHEL SPECIFICATION VENDOR CONFIRMATION(USE AN ANNEXURE IF THIS SPACE IS INADEQUATE )BHEL VENDORPREPARED BY APPROVED BY DATE PREPARED BY APPROVED BY DATE。
锅炉设计说明书1.锅炉技术规范哈尔滨锅炉厂有限责任公司由三菱重工业株式会社(Mitsuibishi Heavy Industries Co. Ltd)提供技术支持,为本工程设计的锅炉是超超临界变压运行直流锅炉,采用П型布置、单炉膛、低NO X PM主燃烧器和MACT型低NOx分级送风燃烧系统、反向双切园燃烧方式,炉膛采用内螺纹管垂直上升膜式水冷壁、循环泵启动系统、一次中间再热、调温方式除煤/水比外,还采用烟气分配挡板、燃烧器摆动、喷水等方式。
锅炉采用平衡通风、露天布置、固态排渣、全钢构架、全悬吊结构,燃用神府东胜煤、晋北煤。
锅炉主要参数如下:2.设计条件2.1 煤种电厂燃煤设计煤种为神府东胜煤,校核煤种为晋北烟煤,煤质分析数据及灰份组成如下表:2.2点火助燃用油油种#0轻柴油粘度(20℃时) 1.2~1.67°E凝固点不高于0℃闭口闪点不低于65℃机械杂质无含硫量不大于1.0%水份痕迹灰份不大于0.025%比重817kg/m3低位发热值Qnet.ar 41800KJ/ kg2.3自然条件玉环地区气象有关数据如下:累年平均气压1004.9hPa年最高气压1028.4hPa年最低气压954.1hPa累年平均气温17.0℃极端最高气温34.7℃极端最低气温-5.4℃累年平均相对湿度80%累年最小相对湿度8%最大的月平均相对湿度91% (此时月平均最高气温25.5℃)累年平均水汽压17.7hPa累年平均降水量1368.9mm累年最大24小时降水量284.6mm累年最大1小时降水量147.0mm累年最长连续降水日数18d累年最大过程降水量225.3mm累年平均蒸发量1379.0mm累年平均雷暴日数37.5d累年平均雾日数49d累年最大积雪深度14cm累年平均风速 5.2m/s累年十分钟平均最大风速40.6m/s(1994年8月21日)累年瞬时最大风速50.4m/s(1994年8月21日)50年一遇10M高压基本风压0.8kN/m3(初步)全年主导风向N(16%)夏季主导风向SW冬季主导风向N2.4锅炉运行条件锅炉运行方式:带基本负荷并参与调峰(锅炉的效率—负荷曲线见附图)。
High Performance, Cast-iron, Power Vent Gas BoilerVHS SERIESVICTORY IIContractor-friendly features speed installation and reduce service time.Design innovations developed with the installer in mind make the Victory II easier to install and service. Boilers are fully packaged and ready to install. We even include additional flue system components, assembled with the boiler at the factory,saving field purchase cost and installation time.Horizontal flue discharge components are factory installed to save field assembly.3-inch flue connector with integral adapter for easy connection to stainless steel venting.Drain tube for condensate is factory installed and pre-configured with water trap.Intermittant pilot “spark” ignition saves energy.Ignition control, Hydrostat temperature control and gas valve are included for reliability.Junction box for line voltage facilitates placement and wiring of shut-off switch.Pressure switch is the same for all boiler sizes and all altitudes.Controls , circulator pump and other “trim” are top qual-ity brand names that are widely available to heating pro-fessionals and easy to service.Flexibility in venting.A wide variety of options permit you to select the most practical and economical venting method. Consult the Victory II boiler installation instructions for complete details and restrictions on these venting options:Fo r side wall o r thro ugh the ro o f po wer (pressure) venting -- Easy, economical horizontal or vertical power venting with 3" diameter AL29-4C stain-less steel pipe. Several brands of venting material are ap-proved. Some restrictions apply.Chimney or type “B” venting --with galvanized or stainless steel pipe. Natural draft venting for VHS-90through VHS-180 boilers•Thermal targeting technology to conserve fuel•Near zero CO emissions •LWCO function•30,000 to 180,000 Btuh CSA input •Thermal pre-purge option•LED display for operational infoThe perfect boiler for new construction or replacement boiler for older homes.Look for ourHydronic Explorer app oniTunes and Google Play!(Works on iPad, iPhone & Android devices)RATINGS FOR WATERCSA D.O.E. NET AHRI NETMODEL INPUT CAPACITY WATER WATER EFFICIENCY No. (Btuh) (Btuh) (Btuh)† (Sq. ft)‡ (A.F.U.E.) VHS-30 30,000 26,000 23,000 153 84.5 VHS-60 60,000 50,000 43,000 287 83.4 VHS-90 90,000 75,000 65,000 433 82.8 VHS-120 120,000 100,000 87,000 580 82.2 VHS-150 150,000 125,000 109,000 727 82.1 VHS-180 180,000 149,000 130,000 867 82.0† Ratings must be reduced by 4% at 2,000 feet elevation and an additional 4% for every additional 1,000 feet elevation over 2,000 feet. Net ratings shown include allowance from normal piping loss and pick-up load. For installations having unusual piping and pick-up requirements, additional allowances should be made before selecting the size of boiler required. Ratings are based on a piping and pick-up factor 1.15.‡ Based on heat emission rate of 150 Btu per square foot.Note: All boilers under 300,000 Btuh input are tested and rated for capacity under the U.S. Dept. of Energy (D.O.E.) Test Procedure for Boilers.Supply water tapping 11⁄2"Circulator return flange* 11⁄4"Gas tapping, natural or propane 1⁄2"* When not equipped with circulator, boiler 1-1/2” return tapping.Crate dimensions: 34-5/8” length, 22-1/2” width, 33-1/2” height.▲ AL 29-4C is a registered trademark of Allegheny Ludlum Corp.Victory VHS boiler minimumclearances for combustible construction(See installation instructions for further details.)RATINGS FOR NATURAL AND L.P . GAS*6" if enclosedDimensions VHS-30 VHS-60 VHS-90 “A” 81⁄8" 111⁄8" 141⁄8" “B” 145⁄8" 175⁄8" 205⁄8" LEFT END VIEW FRONT VIEW RIGHT END VIEW NOTE:Height dimensions increase by 1⁄" and depth increases to 22⁄" when combustible floor kit is used.Features1.Insulated jacket2.Cast iron heat exchanger3.Thermal pins4.Metal push nipples (Avoids leaks)5.Insulated base6.Long life stainless steel burners7.Rollout safety switch 8.Gas valve 9.Junction box10.Brand name controls 11.Power vent12.Horizontal flue discharge40 ft. for all models. May differ for certain vent system manufacturers and altitudes. See installation instructions,Pub. VHS-40.MAX EQUIVALENT FLUE LENGTH DIMENSIONS©2017 Slant/Fin Corp. Publication VHS-10 Printed in U.S.A. 217123546789101112VICTORY II VHSDimensions VHS-120 VHS-150 VHS-180“A” 171⁄8" 201⁄8" 231⁄8" “B” 235⁄8" 265⁄8" 295⁄8"®BOILERS & BASEBOARDW e B ui l d T r u s t a n d C o m f o r tSince 1949U.S.A.Slant/Fin Corporation • 100 Forest Drive Greenvale, NY 11548 • CanadaSlant/Fin LTD/LTEE • 400 Ambassador Drive,Mississauga, Ontario L5T 2 J3 • 905-677-8400www.slantfin.caPACKAGED WATER BOILER includes: Pre-assembled cast-iron heat exchangerwith built-in air eliminator, Insulated Base, Pre-assembled insulated flush jacket, Gas burners,Gas orifices and manifold assembly, Combination gas valve - including manual shut-off, pres-sure regulator and pilot adjustment, Intermittent pilot ignition system, Pressure and tempera-ture gauge, LWCO function, Control w/LED and display, Pressure relief valve (ASME)** ,Circulator 1-1/4", Circulator 1-1/4", Drain cock, Inducer assembly, Air flow proving switch,Built-in condensate drain, T rap and stainless steel vent pipe adapter, and Rollout safety switch.For propane, specify when ordering.OPTIONAL EQUIPMENT: Air package consisting of diaphragm expansion tank, fill and pressure re-ducing valve, and automatic air vent. Combustible floor kit. AL 29-4C ▲stainless steel venting material,outdoor reset kit.** Boilers are factory equipped with 30 psi A.S.M.E. relief valves. Boilers are rated for 50 psi working pressure.。