Steam-to-Steam Humidification System
STS S te a m-to-S te amH umidification S y ste mPR 0 DU C T C ATALOG
IFNJDBM GSFF TUFBN XJUI 454 Figure 2-1:STS side cleanoutHumidify using an economical energy sourceThe STS steam-to-steam humidifier creates chemical-freehumidification steam while using boiler steam as its energy source.The STS accomplishes this by circulating boiler steam within a heatexchanger, transferring heat to clean fill water and boiling it intochemical-free humidification steam.No direct injection of boiler chemicalsThe side cleanout (shown with cleanoutplate removed) provides access to the heatexchanger and evaporating chamber floor.Another way to use boiler steam for humidification is to disperseit directly into the air. However, humidifier owners are findingthat chemically treated, boiler generated steam is unsuitable fordirect injection humidification. Boiler water is usually treated withanticorrosion chemicals that can contaminate spaces humidified bydirect steam injection.Airborne boiler chemicals have been found to irritate eyes and skin,and to aggravate respiratory disorders. In addition, they acceleratethe aging of certain materials like paper and wood, an issue especiallyrelevant to museum owners.To ensure chemical-free humidification while taking advantage ofeconomical on-site boiler steam consider using an STS steam-tosteam humidifier.Redesigned cover and cleanout plate ease maintenanceThe redesigned STS provides improved access for maintenance.The removable cover allows tank access without disconnectingsteam dispersion piping from the steam outlet. And the sidecleanout plate provides direct access to the heat exchanger.1BHF t %3* 45&&. 454 )VNJEJGJFS
.JDSPQSPDFTTPS DPOUSPMPrecise control with Vapor-logic3!Figure 3-1:STS features Vapor-logic3, DRI-STEEM’s state-of-the-art controller.Vapor-logic3 offers precise and complete humidifier control, and isso easy to use, it practically runs itself!Vapor-logic3 keypadMany new control capabilities. Key features of this modularcontroller include:t PID control provides accurate, responsive and adjustable RHcontrol.t The temperature sensor enables the controller to hold water at apreset temperature allowing rapid response to a call for humidityt Data reports help you monitor humidifier performancet Backlit display is easy to readt Menus are intuitive and easy to navigatet Real-time clock allows time-stamped alarm tracking and the abilityto program draining for preset timest LonTalk interoperability allows communication with a LonTalkbuilding automation systemt Multiple-humidifier control allows control of up to 16 humidifierswith one controller%3* 45&&. 454 )VNJEJGJFS t 1BHF
454 GFBUVSFT BOE CFOFGJUTFigure 4-1:STS humidifierReliable performancet POUSPM UP 3)t &MFDUSPOJDBMMZ NPOJUPSFE XBUFS MFWFM FOTVSFT TBGF BOE SFMJBCMF operationt %JBHOPTUJD UFTU BU VOJU TUBSU VQ WFSJGJFT TZTUFN QFSGPSNBODFApplication flexibilityt BQBDJUZ SBOHF VQ UP MCT IS LH I GPS FBDI VOJUt -JOL NVMUJQMF VOJUT UPHFUIFS GPS JODSFBTFE DBQBDJUZt 4VQQPSUT BMM UZQFT PG XBUFS UBQ TPGUFOFE SFWFSTF PTNPTJT PS deionized; easy to field-convert if water type changest %JTQFSTFT TUFBN UISPVHI EVDUXPSL PS EJSFDUMZ JOUP B TQBDFt 3PCVTU PVUEPPS FODMPTVSF BWBJMBCMF GPS PVUEPPS PQFSBUJPO JO BOZ climateSTS humidifier with H-legs and control cabinetMinimal maintenancet 3FEFTJHOFE DMFBOPVU QMBUF QSPWJEFT BDDFTT UP UIF IFBU FYDIBOHFSt 3FEFTJHOFE DPWFS BMMPXT UBOL BDDFTT XJUIPVU SFNPWJOH TUFBN dispersion pipingt 6TFS BEKVTUBCMF XBUFS TLJNNFS TLJNT PGG GMPBUJOH NJOFSBMTt 6TF PG TPGUFOFE XBUFS TJHOJGJDBOUMZ SFEVDFT NBJOUFOBODF requirementst POTUBOU UIFSNBM FYQBOTJPO BOE DPOUSBDUJPO PG IFBU FYDIBOHFS continuously sheds mineral buildupt POUSPMMFS PQFSBUFE ESBJO BOE GMVTI SFNPWFT QSFDJQJUBUFE minerals from evaporating chambert &OE PG TFBTPO BVUPESBJO NJOJNJ[FT NJDSPCJBM HSPXUIAdvanced control with Vapor-logic3t &BTZ UP VTF LFZQBE EJTQMBZT DVSSFOU DPOEJUJPOT BMBSN MPH graphed data and message reminder for tank cleaning based onwater usaget 5FNQFSBUVSF TFOTPS FOBCMFT GSFF[F QSPUFDUJPO BOE BMMPXT SBQJE warm-upt :FBST PG QSPWFO QFSGPSNBODF BT B %3* 45&&. DPOUSPMMFS FOTVSFT trouble-free operationt PME TOBQ PGGTFU PQUJPO QSFWFOUT XJOEPX DPOEFOTBUJPOt 7"7 DPOUSPM PQUJPO t "DDFQUT BMM JOQVU TJHOBMTt -PO5BML JOUFSPQFSBCJMJUZt .VMUJUBOL DPOUSPM OPU BWBJMBCMF XJUI -PO5BML1BHF t %3* 45&&. 454 )VNJEJGJFS
454 GFBUVSFT BOE CFOFGJUTOptional LW417 controlt 5IF -8 DPOUSPMMFS NPOJUPST BOE BEKVTUT XBUFS MFWFM DPOUSPMT periodic draining and flushing, allows adjustable skim duration,and automates end-of-season drainingt "WBJMBCMF BT BO PQUJPO PO TUBOEBSE XBUFS NPEFMTGuaranteed absorptiont BUBMPHFE BOE HVBSBOUFFE TUFBN BCTPSQUJPO EJTUBODFTt 6OJRVF UVCFMFUT JO EJTQFSTJPO UVCFT FMJNJOBUF DPOEFOTBUF ESJQTt 1VCMJTIFE BCTPSQUJPO UBCMFT GPS TJ[JOH BOE TFMFDUJOH UIF DPSSFDU dispersion optiont %SJ DBMD TPGUXBSF BWBJMBCMF GPS DPNQVUFS DBMDVMBUJPO PG absorption distances and system selectionFigure 5-1:STS steam outletThe redesigned, removable cover allows tank access without disconnecting steam dispersion piping from the steam outlet.%3* 45&&. 454 )VNJEJGJFS t 1BHF
454 DPNQPOFOUTFigure 6-1:Vapor-logic3 keypadFigure 6-2:STS components28976543OM-938B1. Controller (not shown)The Vapor-logic3 controller controls all functions of theIVNJEJGJFS LFZQBE TIPXO JO 'JHVSF 5IF PQUJPOBM -8 controller controls water levels for tap or softened water systems.4FF 1BHF GPS NPSF JOGPSNBUJPO 2. Water level controlTap or softened water systems control water levels electronicallyVTJOH B UISFF SPE QSPCF TFF BMTP 'JHVSF PO UIF OFYU QBHF %* 30 XBUFS TZTUFNT DPOUSPM XBUFS MFWFMT VTJOH B GMPBU WBMWF TFF 'JHVSF PO UIF OFYU QBHF 3. DrainStandard-water models are programmed to automatically drain ifthere is no call for humidity after a defined time period.%* 30 XBUFS NPEFMT IBWF B NBOVBM ESBJO VOMFTT PSEFSFE XJUI an electric drain to enable automated end of season drainingSFRVJSFT 7BQPS MPHJD PS TJHOBM CZ PUIFS 1BHF t %3* 45&&. 454 )VNJEJGJFS
454 DPNQPOFOUT4. Water skimmer/overflow portIn standard water systems, the water skimmer reduces surfaceminerals in the evaporating chamber. Skimming occurs eachtime the humidifier fills. The skim time duration is userBEKVTUBCMF %* 30 XBUFS TZTUFNT EP OPU SFRVJSF TLJNNJOH *O %* 30 TZTUFNT UIF TLJNNFS QPSU GVODUJPOT BT BO PWFSGMPX QPSU Figure 7-1:Water level control for standardwater systems5. Valve 6QPO B DBMM GPS IVNJEJUZ UIF WBMWF BMMPXT CPJMFS TUFBN UP FOUFS the heat exchanger.Fill valve closes6. Heat exchangerThe heat exchanger transfers energy from boiler steam to theclean fill water in the evaporating chamber, generating steam.The STS is available with either copper or stainless steel heatexchangers.7. Temperature sensorThis sensor, which is standard on all models withVapor-logic3, enables: t 'SFF[F QSPUFDUJPOt 1SFIFBUJOH BMMPXJOH SBQJE SFTQPOTF UP B DBMM GPS IVNJEJUZ8. Service accessThe redesigned access cover allows periodic inspection andservicing of the evaporating chamber without removing vaporhose or piping. The cleanout plate allows side access to the heatexchanger and tank floor.Fill valve opensLow-water cutoffSystems using tap or softened water controlwater levels electronically using a threerod probe. The controller responds with theabove actions when the water level reacheseach rod.VLC-OM-030Figure 7-2:Water level control for DI/ROwater systemsFill valveFloat rod9. Steam outletSteam generated in the unit rises and exits through the steamoutlet and travels to the dispersion assembly through eithervapor hose or piping.Float ballVLC-OM-026%3* 45&&. 454 )VNJEJGJFS t 1BHF
454 QSJODJQMF PG PQFSBUJPOFigure 8-1:STS principle of operation1423OM-938A1. 8IFO UIF TZTUFN JT GJSTU BDUJWBUFE UIF GJMM WBMWF PQFOT BOE UIF evaporating chamber fills with water to the operating level.2. 0O B DBMM GPS IVNJEJUZ CPJMFS TUFBN QBTTFT UISPVHI UIF WBMWF UP the heat exchanger, causing water in the evaporating chamber toboil. The fill valve opens and closes as needed to maintain theoperating water level. During refill in standard water systems, a portion of the surfacewater is skimmed off, carrying away precipitated minerals.%* 30 TZTUFNT EP OPU SFRVJSF TLJNNJOH 4. Steam created in the evaporating chamber flows through vaporhose or piping to the dispersion assembly, where it is dischargedinto the airstream.1BHF t %3* 45&&. 454 )VNJEJGJFS
454 DPOUSPM PQUJPOTAccurate, responsive control with Vapor-logic3Vapor-logic3 provides exceptional functionality, ease of use, andaccurate RH control. Standard on all STS models, this controllerfeatures:Figure 9-1:Vapor-logic3 keypadt 3FBM UJNF DMPDL allows time-stamped alarm tracking and threeways to program drain and flush cycles: 6TBHF VOJU ESBJOT BGUFS B TFU OVNCFS PG QPVOET PG XBUFS IBWF DZDMFE UISPVHI 6TBHF BOE UJNF VOJU ESBJOT BU B QSFTFU UJNF BGUFS B TFU OVNCFS PG QPVOET PG XBUFS IBWF DZDMFE UISPVHI3. At a preset timet ,FZQBE has a backlit display and features:– Intuitive menu-driven access to all system functions– Default screen for quick viewing of system status and set points– Data reports to track performance and efficiency– System diagnostics and alarm tracking for troubleshooting o 1BTTXPSE QSPUFDUJPO PG TFUVQ QBSBNFUFST– Easy viewing in low-light environments– Three ways to mount the keypad: )BOE IFME TIJQQFE XJUI B h N DBCMF .PVOUFE PO UIF DPOUSPM DBCJOFU 3. Mounted remotely using a standard telephone plate. The LFZQBE DBO CF MPDBUFE VQ UP h N UIF NBYJNVN MFOHUI PG UIF LFZQBE DBCMF GSPN UIF 454 The Vapor-logic3 keypad is easy to use andread, and it provides access to all humidifierfunctions.t 5BOL UFNQFSBUVSF TFOTPS mounted on the evaporating chamber,allows Vapor-logic3 to provide: o 0WFS UFNQFSBUVSF QSPUFDUJPO o 'SFF[F QSPUFDUJPO– Tank preheating, allowing rapid response to a call for humidityDPOUJOVFE PO OFYU QBHF%3* 45&&. 454 )VNJEJGJFS t 1BHF
454 DPOUSPM PQUJPOT DPOUJOVFEDI/RO water systems control water levelwith a float/fill valvet 1*% DPOUSPM provides accurate, responsive, and adjustable relativeIVNJEJUZ 3) DPOUSPM DI/RO humidifiers control water level witha float ball and fill valve (see Page 7).End-of-season draining is performed bymanually opening the drain valve, unlessthe humidifier is ordered with Vapor-logic3,which automates end-of-season draining.t -PO5BML JOUFSPQFSBCJMJUZ allows communication with a LonTalkbuilding automation system using Standard Network Variable5ZQFT 4/75T /PUF UIBU -PO5BML JOUFSPQFSBCJMJUZ XJUI B building automation system is not available when using multiplehumidifier control.t .VMUJQMF IVNJEJGJFS DPOUSPM allows control of up to 16humidifiers with one controller. The primary benefit ofmultiple-humidifier control is expanded capacity without givingup consistent humidity control. The Vapor-logic3 controlleranticipates increased demand and preheats tanks as needed toprovide a rapid response to demand changes.Optional control for standard water: LW4175IF -8 DPOUSPMMFS NPOJUPST BOE BEKVTUT XBUFS MFWFM DPOUSPMT periodic draining and flushing, allows adjustable skim duration,BOE BVUPNBUFT FOE PG TFBTPO ESBJOJOH 5IF -8 IBT GPVS MJHIUT indicating: power, full, ready water, and drain. Dip switches on thecontrol board can be field-set for automatic draining and flushingfrequency and skim duration. End-of-season draining is preset toBDUJWBUF BGUFS IPVST XJUIPVU B DBMM GPS IVNJEJUZ 1BHF t %3* 45&&. 454 )VNJEJGJFS
%SJQ GSFF EJTQFSTJPO CBTJDTGuaranteed absorption distances6TJOH EBUB DPMMFDUFE JO PVS PO TJUF UFTU MBC XF IBWF EFWFMPQFE HVBSBOUFFE TUFBN BCTPSQUJPO EJTUBODFT 1FSGPSNBODF DIBSUT BMMPX you to confidently choose equipment that will accommodate anyapplication.Figure 11-1:DRI-STEEM dispersion tubesDry steamAdding humidification to an airstream without creating wetnessin the duct system is critical for the maintenance of a healthyFOWJSPONFOU 8FU BSFBT JO EVDUT BSF B UISFBU UP UIF IFBMUI PG building occupants since they moisten dust on duct floors, creatingideal breeding grounds for disease-producing microbes. In addition,water accumulating in ducts can drip and cause building damage.Steam escapes drip-free through tubeletsAll DRI-STEEM evaporative dispersion tube units discharge steamthrough thermal-resin tubelets fitted into dispersion tubes. Thesetubelets extend from the center of the tube, where the steam isdriest, through the tube wall, to the duct airstream. In essence, thetubelets provide a temperature-neutral escape tunnel for steam,allowing steam to cross over lower-temperature metal withoutcondensing or dripping. Each tubelet contains a calibrated orificesized for steam capacity. These tubelets are a DRI-STEEM exclusive,and are essential for drip-free steam dispersion.DRI-STEEM’s dispersion tubes are fitted withone or two rows of closely-spaced thermalresin tubelets to evenly disperse steam acrossthe airstream.Figure 11-2:DRI-STEEM tubeletsCalibratedorificeTubeletCondensate drains awaySome condensation is inevitable in steam dispersion, but throughcareful design, condensate can be controlled and directed awayfrom where it can cause problems.'PS FYBNQMF UIF 6MUSB TPSC EJTQFSTJPO QBOFM IBT B VOJRVF EPVCMF header design that uses gravity to remove condensate. Steam entersthe supply header, escapes through the tubelets, and condensateESBJOT PVU UIF SFUVSO IFBEFS *O UIF 3BQJE TPSC EJTQFSTJPO VOJU steam enters one end of a single bottom header with velocitiescarefully managed so that condensate is not pushed out into the airalong with the steam, but rather drains out at the opposite end ofthe header.Air flowCondensate clingsto inner wallDRI-STEEM’s unique tubelets extend into thecenter of the tube so only the driest steamis discharged into the air.150-3bw'PS NPSF JOGPSNBUJPO BCPVU EJTQFSTJPO VOJUT TFF 1BHFT BOE %3* 45&&. 454 )VNJEJGJFS t 1BHF
454 TUFBN EJTQFSTJPO PQUJPOTUltra-sorb5IF NVMUJQMF UVCF 6MUSB TPSC BMMPXT WJSUVBMMZ instantaneous steam absorption. The factoryassembled panel can be installed within inchesupstream of dampers, coils or elbows withoutdripping.Figure 12-1:Ultra-sorb dispersionOM-910Figure 12-2:Rapid-sorb dispersion5IF 6MUSB TPSC T TUFBN EPXOGMPX EFTJHO allows for high capacity dispersion. The unitis preassembled at the factory within a mounting frame, andinstalls easily. Simply mount the panel and complete the steam andDPOEFOTBUF DPOOFDUJPOT TFF 1BHFT Rapid-sorbRapid-sorb has a single header design with steamflowing up from a bottom header. This design isan excellent choice for medium capacity systemswhere multiple tubes are needed to handle the loadBOE PS XIFO OPO XFUUJOH BCTPSQUJPO EJTUBODF JT limited. Rapid-sorbs are assembled on-siteTFF 1BHFT BOE OM-911Figure 12-3:Single or multiple tube dispersionReduce wasted energy by up to 85% with High-efficiency tubes%3* 45&&.hT 17%' JOTVMBUFE EJTQFSTJPO UVCFT SFEVDF XBTUFE FOFSHZ CZ VQ UP XIJMF TJHOJGJDBOUMZ SFEVDJOH BJSTUSFBN IFBU gain and dispersion-generated condensate production. Insulatingthe dispersion tubes makes more steam available for dispersion, andless is lost to condensate. High-efficiency dispersion tubes are anBWBJMBCMF PQUJPO GPS 6MUSB TPSC BOE 3BQJE TPSC EJTQFSTJPO BTTFNCMJFT 'PS NPSF JOGPSNBUJPO TFF UIF )JHI efficiency Tube option brochure,available at www.dristeem.comSingle or multiple tubesOM-912Figure 12-4:Area-type dispersionSingle or multiple dispersion tubesare an excellent choice for lowercapacity applications or where there is room forB MPOHFS BCTPSQUJPO EJTUBODF TFF 1BHFT BOE Area-typeOM-9131BHF t %3* 45&&. 454 )VNJEJGJFSThe Area-type dispersion unit disperses steam in largeopen spaces and is commonly used where there are noair-handling ducts. The fan distributes steam quietlyand efficiently without introducing water dropletsinto the air. Area-type is available for all STSNPEFMT PQFSBUJOH BU DBQBDJUJFT VQ UP MCT IS LH I 4FF 1BHF GPS NPSF JOGPSNBUJPO
454 DBQBDJUJFT BOE XFJHIUTTable 13-1:Output capacities for STS models with copper heat exchangersSteam pressure*STS modelnumber5 psi34 kPa10 psi69 kPa13 psi90 kPa15 psi103 5127557815006801600726Notes:* Steam pressure at connection to the STS steam valve (valve provided by DRI-STEEM)Table 13-2:Output capacities for STS models with stainless steel heat exchangersSteam pressure*STS modelnumber5 psi34 kPa10 psi69 kPa13 psi90 kPa15 psi103 * Steam pressure at connection to the STS steam valve (valve provided by DRI-STEEM)** SNC Stainless steel heat exchanger with no coating. For use with DI/RO water only.Heat exchangers and water typeTable 13-3:STS weightsSTS modelnumberShipping weightOperating 8Note:* Operating weight does not include weight of interconnecting piping provided by installer.Use with standard water:t 454 NPEFMT FOEJOH JO i w copper heatexchangers with a nickel coating)t 454 NPEFMT FOEJOH JO i4w stainless steelheat exchangers with a Teflon coating)Use with DI/RO water:t 454 NPEFMT FOEJOH JO i w copper heatexchangers with a nickel coating)t 454 NPEFMT FOEJOH JO i4w stainless steelheat exchangers with a Teflon coating)t 454 NPEFMT FOEJOH JO i4/ w stainlesssteel heat exchangers with no coating)%3* 45&&. 454 )VNJEJGJFS t 1BHF
454 DPOOFDUJPOT BOE DMFBSBODFTFigure 14-1:Hose connectionTable 14-1:Available steam outlet size and type by modelPipethread XXXX50XXXXX100XXXXXX3"Figure 14-2:Threaded pipe Area-typefanTable 14-2:STS connection sizesDescriptionConnection sizeWater makeup (fill)¼" pipe thread (DN8)Drain¾" (DN20) for standard water models 25 through 100(and all DI water models)1" (DN25) for standard water models 200 through 800Steam dispersionoutletVaries with capacity and dispersion type. To determine outletTJ[F TFF %SJ DBMD PS UIF i.BYJNVN TUFBN DBSSZJOH DBQBDJUZ BOE MFOHUI PG JOUFSDPOOFDUJOH IPTF UVCJOH BOE QJQFw UBCMF JO UIF DRI-STEEM Design Guide.Condensate return¾" pipe thread (DN20)Pressurized steam supplyinlet and return outletSee dimensions tables.Figure 14-4:Recommended clearancesDC-1456Top: 18" (457 mm)Left side:36" (914 mm)Figure 14-3:Flange connectionFront:36" (914 mm)Left side:6" (152 mm)Rear: 6" (152 mm)Rightside:6" (152 mm)Bottom:24" (610 mm)DC-14581BHF t %3* 45&&. 454 )VNJEJGJFSDC-1452
454 EJNFOTJPOTFigure 15-1:Dimensions, STS models 25, 50, 100, 200 and 400 (with copper or stainless steel heat exchangers)Front viewSide viewLM5/16"dia. (M8)mountingholesJKADECHOM-931BNote: See the dimension tables on the next page.OM-932Figure 15-2:Dimensions, STS model 800 (with copper or stainless steel heat exchangers)Front viewSide viewMLJKAFGDEHCBNote: See the dimension tables on the next page.OM-936%3* 45&&. 454 )VNJEJGJFS t 1BHF
454 EJNFOTJPOT DPOUJOVFETable 16-1:STS dimensions with copper heat exchangersSTS model 00755.15140155.151401168DDistance from bottom to supply inlet of first heat exchanger6.631686.631686.631686.631686.63EDistance from bottom to return outlet of first heat exchanger3.63923.63923.63923.63923.6392FDistance from bottom to supply inlet of second heat exchanger————————14.28363GDistance from bottom to return outlet of second heat exchanger————————11.24285HDistance from side to heat exchanger3.25833.25833.25833.25833.2583DN201¼" pipethreadDN321¼" pipethreadDN321½" pipethreadDN401½" pipethreadDN40¾" pipethreadDN201¼" pipethreadDN321¼" pipethreadDN321¼" pipethreadDN32JPressurized steam supply inlet¾" pipethreadKPressurized steam return outlet¾" pipethreadDN20LDistance from side to steam vapor ce from front to steam vapor outlet2.50642.25572.75703.75953.7595Notes:* Add 23.5" (597 mm) to overall height when STS is mounted on four support legs.* Add 22.5" (572 mm) to overall height when STS is mounted on two H-legs.Table 16-2:STS dimensions with stainless steel heat exchangersSTS model 40155.151401DDistance from bottom to supplyinlet of first heat 4EDistance from bottom to returnoutlet of first heat ance from bottom to supplyinlet of second heat tance from bottom to returnoutlet of second heat tance from side to Pressurized steam supply inlet¾" pipethreadDN201" pipethreadDN251" pipethreadDN251½" pipethreadDN401½" pipethreadDN401½" pipethreadDN40KPressurized steam return outlet¾" pipethreadDN20¾" pipethreadDN20¾" pipethreadDN20¾" pipethreadDN20¾" pipethreadDN20¾" pipethreadDN20LDistance from side to steamvapor 0MDistance from front to steamvapor outlet2.50642.25572.75703.75953.75953.7595Notes:* Add 23.5" (597 mm) to overall height when STS is mounted on four support legs.* Add 22.5" (572 mm) to overall height when STS is mounted on two H-legs.1BHF t %3* 45&&. 454 )VNJEJGJFS
4 5 4 Q J Q J O H TUBOEBSE XBUFS POF IFBU FYDIBOHFSFigure 17-1:Field piping overview for STS models 25, 50, 100, 200, 400 (models with one heat exchanger)Shock arrester recommendedto reduce water hammer,by installerWater supply shut-off valve, by installerIf water piping to humidifier is nonmetallic, we recommenda 2" (50 mm) metallic water seal or loop in the supply lineto isolate steam during maintenanceSteam vaporoutletWater supply line; water pressure range 25 psi to 80 psi(172 kPa to 582 kPa); water conductivity minimum100 μS/cmOptionalcondensate returnpiping fromdispersion unitAir venttube6" (152 mm)minimumInstall levelUnions, by installerVacuum breaker,by installerStrainerInstall levelAir vent heightmust be equalto or greatereredthan H2rize ters hu(see tablesnsPre am ebelow)steTrapManual or electric drain valveOvIf run is over 10'er(3 m), increase pipelineflowto 1¼" (DN32)12"(305 mm)minimumdrop totrapH1 (see Ptable) itch 1/8"/ftWaterline seal)Condensate return tononpressurized system,by gravity only¾" (DN20) minimumdrain, skim andoverflow piping ratedfor 212 F (100 C)¾" (DN20) minimumcondensate drain piping ratedfor 212 F (100 C)Figure 17-1 notes:t -PDBUF BJS HBQ POMZ JO TQBDFT XJUI BEFRVBUF UFNQFSBUVSF BOE BJS movement to absorb flash steam; otherwise, condensation may formon nearby surfaces. Refer to governing codes for drain pipe size andmaximum discharge water temperature.t 0GGTFU IVNJEJmFS GSPN nPPS ESBJO UP QSFWFOU nBTI TUFBN GSPN SJTJOH into the humidifier.t %BTIFE MJOFT JOEJDBUF QSPWJEFE CZ JOTUBMMFS t 5IF XBUFS TVQQMZ JOMFU JT NPSF UIBO NN BCPWF UIF TLJN overflow port, eliminating the possibility of backflow or siphoningfrom the tank. No additional backflow prevention is required;however, governing codes prevail.t %BNBHF DBVTFE CZ DIMPSJEF DPSSPTJPO JT OPU DPWFSFE CZ ZPVS DRI-STEEM warranty.t 4FF UIF OFYU QBHF GPS SFDPNNFOEFE XBUFS TVQQMZ QJQJOH GPS B %* 30 system or for piping a system with two heat exchangers.(1%Water seal lineMUST be belowdrain valve toensure humidifierdrains correctly1" (25 mm) air gapOpen floor drain.See first note below.DC-1451Table 17-1:Heights required to overcomehumidifier internal pressure (H1, H2)Unit outputWater sealheight (H1)Air vent height (H2)STS modelsSTS models25, 50,100, 200, 400All800lbs/hrkg/hinchesmminchesmminchesmmd 138d 621230527686——139–18363–831538130762—— 183 83184573383842.251073%3* 45&&. 454 )VNJEJGJFS t 1BHF
454 %* QJQJOH%* XBUFS UXP IFBU FYDIBOHFSTFigure 18-1:Field piping overview for STS-DI 800 (DI water model with two heat exchangers)Steam vapor outletWater supply line; water pressure range 60 psi to 80 psi(414 kPa to 582 kPa). First 3' (1 m) of supply line mustbe rated for 212 F (100 C)Install levelIf water piping to humidifier is non-metallic, we recommenda 2" (50 mm) stainless steel water seal or loop in the supplyline to isolate steam during maintenance.Unions, byinstallerStrainer, by installerOptional condensatereturn piping fromdispersion unitVacuum breakers,by installerInstall levelStrainer6"(152 mm)minimumOverlineflowPreentessurizers h d stere eamAir vent tubeAir ventheight mustbe equal toor greaterthan H2(see tableon Page 17)12"(305 mm)minimumdrop totrapTrapCondensate return tononpressurized system,by gravity only¾" (DN20)minimumcondensate drainpiping rated for212 F (100 C)¾" pipe thread(DN20) dispersionunit condensatereturn inletH1 (see Ptable itch 1/8"on/ft(1%Page 17))¾" (DN20) minimumdrain, skim andoverflow piping ratedfor 212 F (100 C)Manual or electric drain valveIf run is over 10' (3 m),increase pipe to 1¼" (DN32)Waterline sealWater seal line MUSTbe below drain valve toensure that humidifierdrains correctly1" (25 mm) air gapOpen floor drain. Seefirst note belowDC-1468Notes:t -PDBUF BJS HBQ POMZ JO TQBDFT XJUI BEFRVBUF UFNQFSBUVSF BOE BJS NPWFNFOU UP BCTPSC nBTI TUFBN PUIFSXJTF DPOEFOTBUJPO NBZ GPSN PO nearby surfaces. Refer to governing codes for drain pipe size and maximum discharge water temperature.t 0GGTFU IVNJEJmFS GSPN nPPS ESBJO UP QSFWFOU nBTI TUFBN GSPN SJTJOH JOUP UIF IVNJEJmFS t %BTIFE MJOFT JOEJDBUF QSPWJEFE CZ JOTUBMMFS t 5IF XBUFS TVQQMZ JOMFU JT NPSF UIBO NN BCPWF UIF TLJN PWFSnPX QPSU FMJNJOBUJOH UIF QPTTJCJMJUZ PG CBDLnPX PS TJQIPOJOH GSPN UIF tank. No additional backflow prevention is required; however, governing codes prevail.t 454 %* NPEFM SFRVJSFT TVQQMZ MJOF XBUFS QSFTTVSF UP CF CFUXFFO QTJ BOE QTJ L1B BOE L1B "O PQUJPOBM mMM BTTFNCMZ GPS these models is available for water pressures between 25 psi and 80 psi (172 kPa and 552 kPa). All other STS models operate with waterpressure between 25 psi and 80 psi (172 kPa and 552 kPa).t %BNBHF DBVTFE CZ DIMPSJEF DPSSPTJPO JT OPU DPWFSFE CZ ZPVS %3* 45&&. XBSSBOUZ t 4FF UIF QSFWJPVT QBHF GPS SFDPNNFOEFE XBUFS TVQQMZ QJQJOH GPS B TUBOEBSE XBUFS TZTUFN PS GPS QJQJOH B TZTUFN XJUI POF IFBU FYDIBOHFS 1BHF t %3* 45&&. 454 )VNJEJGJFS
454 NPVOUJOHFigure 19-1:Trapeze hangerFigure 19-3:H-legsSecure rods to overhead constructionProvide 18" (457 mm)minimum clearanceabove cover3/8" (M10) threaded rodof length requiredAngle or channel sized toproperly support humidifierHumidifier drain to appropriatebuilding waste. Do not drainhumidifier directly into drip pan.Install water seal as shown onPages 17 and 18.OM-947DC-1453Figure 19-4:Support legsFigure 19-2:Wall 53330762AOptional set offour legs andhardwareOM-933Table 19-1:Mounting options by modelBSTS/STS-DI modelsMountingmethodDRI-STEEMoptional wall brackets(two required)25, 50, 100StandardTrapezeDC-1454Optional200, 400, sx%3* 45&&. 454 )VNJEJGJFS t 1BHF
454 XFBUIFS DPWFSOptional STS weather coverThe optional weather cover is waterresistant and designed to protect an STSunit from rain and sun. The STS weathercover has been tested and approved by ETLTesting Laboratories, Inc., and is listed toUL Standard 1995 and certified to CAN/CSAStandard C22.2 No. 236.Figure 20-1:Weather cover exploded viewTop rear panelTop front panelRear panelRight side panelRear leftside panelFront leftside panelFront PanelOM-7466Figure 20-2:Weather cover dimensionsBCADOM-7465Table 20-2:Weather cover dimensionsTable 20-1:Weather cover weightsWeather cover sizelbskgSTS 25 to 100425193STS 200 to 8005502501BHF t %3* 45&&. 454 )VNJEJGJFSSTS 25 to 100LetterSTS 200 to Length43.51105531346CWidth62157578.251988DDistance from bottom2255922559
454 PVUEPPS FODMPTVSF PWFSWJFXOutdoor enclosure expands application flexibility0VUEPPS IVNJEJGJFS PQFSBUJPO JO BOZ DMJNBUF JT OPX QPTTJCMF XJUI UIF %3* 45&&. PVUEPPS FODMPTVSF 5IJT QSFQBDLBHFE factory-assembled unit ships complete to the job site, ready foreasy-to-connect water, electrical or steam field connections to theQSFJOTUBMMFE IVNJEJGJFS JOTJEF 8JUI B WBSJFUZ PG BWBJMBCMF NPVOUJOH options — curb, legs, or flush — installation is a snap.Figure 21-1:Outdoor enclosureOutdoor enclosure featurest *OTUBMM PO UIF HSPVOE PS PO UIF SPPG 0VUEPPS FODMPTVSFT BSF ideal for facilities that have limited interior space.t 'BDUPSZ DPOTUSVDUFE BOE BTTFNCMFE The outdoor enclosure isshipped complete with your humidifier preinstalled and tested.Humidifiers are prepiped within the enclosure with an integralwater seal and are ready for quick connection to water, steam andelectricity.t FSUJGJFE UFTUFE BOE QSPWFO In-house testing and numeroussuccessful installations have proven that the outdoor enclosureprovides reliable operation under extreme conditions.t &BTZ BDDFTT GPS TFSWJDF Steel enclosure doors provide full accessto all internal components. The doors feature stainless steel hingesand latches operable from both the exterior and interior of theunit.t 1SPUFDUT JO DPME BOE IPU DMJNBUFT To ensure complete safetyand operation in all climates, the outdoor enclosure hassupplemental hea
The STS steam-to-steam humidifier creates chemical-free humidification steam while using boiler steam as its energy source. . DRI-STEEM’s state-of-the-art controller. Vapor-logic3 offers precise and complete humidifier control, and is so easy to use, it practically runs itself!
the room humidity to unreasonable levels unless humidification is provided in the AHU or supply air duct. Humidification Applications Part 1: Isothermal Humidification Figure 3: Typical resistive steam humidifier Figure 4: Typical electrode steam humidifier continued on page 16 14 Air Conditioning and Refrigeration Journal July - August 2020
ML PRINCESS, ML SOLO, ML FLEX AIR HUMIDIFICATION When it has to be more The ML systems are designed for high-volume humidification applications. The individual modules have flexible expansion options and some offer unlimited humidification capacities. Customer-specific combined water treatment systems can handle volumes up to 10,000 litres .
Active humidification ventilated patients contact us 44 (0)118 9656 300 Smoothbore breathing systems for active humidification Systems are available with single or dual heated wires and can be supplied complete with an auto-fill humidification chamber if required 5025 Single heated wire breathing system, 1.6m length with 0.5m limb 10
17 Table 3. Compressed Water and Superheated Steam (continued) 0.01 MPa (ts 45.806 C) 0.02 MPa (t s 60.058 C) 0.03 MPa (t s 69.095 C) v ρh s t, C v h s t, C v ρ h s 26 446. 0.037 814 3076.7 9.2827 300 13 220. 0.075 645 3076.5 8.9625 300 8811.0 0.113 49 File Size: 630KBPage Count: 60Explore furtherCalculator: Superheated Steam Table TLV - A Steam .www.tlv.comSuperheated Steam Tables - Gilson Enggilsoneng.comCalculator: Superheated Steam Table TLV - A Steam .www.tlv.comCalculator: Superheated Steam Table TLV - A Steam .www.tlv.comSteam Table Calculator Superheated Steam Region Spirax .www.spiraxsarco.comRecommended to you b
Page 2 DRI-STEEM LTS Humidifier LTS Liquid-to-Steam system is economical For buildings with an existing 240 F (116 C) or greater hot liquid source, DRI-STEEM’s unique LTS system is an economical way to create steam for humidification. The LTS takes energy from an existing hot liquid source (such as water, oil or glycol), and transfers
LUX GEOx OPERATING INSTRUCTIONS 2 A: Keypad Lock B: Auto-changeover C: Current System Mode D: Active System Process E: Fan Status F: Wifi Connection Status G: Current Schedule Period H: Current Set Temperature I: Ambient Temperature J: Relative Humidity K: Humidification Mode L: Curren
ensuring that no fog droplets can travel downstream of the humidification section. Some types of cooling coils can be used as droplet eliminators. Figure 4 shows a typical MeeFog humidification system installation in an AHU. This system has two control valves (V1 and V2), which control the fog
Botany-B.P. Pandey 3. A Textbook of Algae – B.R. Vashishtha 4. Introductory Mycology- Alexopoulos and Mims 5. The Fungi-H.C. Dube . B.Sc. –I BOTANY : PAPER –II (Bryophytes, Pteridophytes, Gymnosperms and Palaeobotany) Maximum marks- 50 Duration - 3 hrs. UNIT -1 General classification of Bryophytes as Proposed by ICBN. Classification of Pteridophytes upto the rank of classes as proposed .
