Liquid-to-Steam Humidification System
LTS Liquid-to-S te amH umidification S y ste mPR 0 DU C T C ATALOG
U s e e x i s t i n g h o t l i q u i d w i t h LT S Figure 2-1:LTS side cleanoutLTS Liquid-to-Steam system is economicalFor buildings with an existing 240 F (116 C) or greater hot liquidsource, DRI-STEEM’s unique LTS system is an economical wayto create steam for humidification. The LTS takes energy from anexisting hot liquid source (such as water, oil or glycol), and transfersthat energy through a heat exchanger to clean fill water in theLTS evaporating chamber. This heat exchange process generateschemical-free steam for humidification from the regularlyreplenished supply of clean fill water.Precise control with Vapor-logic3!The new side cleanout (shown with cleanoutplate removed) provides access to the heatexchanger and evaporating chamber floor.LTS features Vapor-logic3, DRI-STEEM’s state-ofthe-art controller. Vapor-logic3 offers precise andcomplete humidifier control, and is so easy touse, it practically runs itself!Many new control capabilities. Key features ofthis modular controller include: PID control provides accurate, responsive andadjustable RH control. The temperature sensor enables the controller to hold water at apreset temperature allowing rapid response to a call for humidity Data reports help you monitor humidifier performance Backlit display is easy to read Menus are intuitive and easy to navigate Real-time clock allows time-stamped alarm tracking and the abilityto program draining for preset times LonTalk interoperability allows communication with a LonTalkbuilding automation system Multiple-humidifier control allows control of up to 16 humidifierswith one controllerRedesigned cover and cleanout plate ease maintenanceThe redesigned LTS provides improved access for maintenance. Theremovable cover allows tank access without disconnecting steamdispersion piping from the steam outlet. And the new side cleanoutplate provides direct access to the heat exchanger.Mount outdoors with our robust outdoor enclosureNow you can install an LTS humidifier virtually anywhere withour enclosure for outdoor humidifier mounting. This prepackaged,factory-installed unit ships complete to the job site, ready for easyto-connect water and electrical connections (see Page 17).P a g e 2 D R I - S T E E M LT S H u m i d i f i e r
LT S f e a t u r e sReliable performanceGuaranteed absorption Control to 3% RH Electronically monitored water level ensures safe and reliableoperation Diagnostic test at unit start-up verifies system performance Cataloged and guaranteed steamabsorption distances Unique tubelets in dispersion tubeseliminate condensate drips Published absorption tables for sizing andselecting the correct dispersion option Dri-calc software available for computercalculation of absorption distances andsystem selectionApplication flexibility Capacity range up to 540 lbs/hr (245 kg/h) for each unit Link multiple units together for increased capacity Supports all types of water: tap, softened, reverse osmosis ordeionized; easy to field-convert if water type changes Disperses steam through ductwork or directly into a space Robust outdoor enclosure available for outdoor operation in anyclimateMinimal maintenance Redesigned cleanout plate provides access to the heat exchanger Redesigned cover allows tank access without removing steamdispersion piping User-adjustable water skimmer skims off floating minerals Use of softened water significantly reduces maintenancerequirements Constant thermal expansion and contraction of heat exchangercontinuously sheds mineral buildup Controller-operated drain and flush removes precipitatedminerals from evaporating chamber End-of-season autodrain minimizes microbial growthFigure 3-1:LTS steam outletAdvanced control with Vapor-logic3 Easy-to-use keypad displays current conditions, alarm log,graphed data and message reminder for tank cleaning based onwater usage Temperature sensor enables freeze-protection and allows rapidwarm-up Years of proven performance as a DRI-STEEM controller ensurestrouble-free operation Cold-snap offset option prevents window condensation VAV control option Accepts all input signals LonTalk interoperability Multitank control (not available with LonTalk)Optional LW417 control The LW417 controller monitors and adjusts water level, controlsperiodic draining and flushing, allows adjustable skim duration,and automates end-of-season draining Available as an option on standard-water modelsThe redesigned, removable cover allowstank access without disconnecting steamdispersion piping from the steam outlet.D R I - S T E E M LT S H u m i d i f i e r P a g e 3
LT S c o m p o n e n t sFigure 4-1:Three-way hot liquid valveFigure 4-2:LTS components829875643This is the pneumatic three-way hot liquidvalve shipped as standard equipment. LTSmodels 25 and 100 have one valve. LTSmodel 400 has two valves, one for eachheat exchanger.LTS-OM-07Figure 4-3:Water level control for standardwater systems1. Controller (not shown)The Vapor-logic3 controller controls all functions of thehumidifier. The optional LW417 controller controls waterlevels for tap or softened water systems. See Page 7 for moreinformation.2. Water level controlTap or softened water systems control water levels electronicallyusing a three-rod probe (shown above and in Figure 4-3).DI/RO water systems control water levels using a float valve(shown on the next page).Fill valve closesFill 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-030P a g e 4 D R I - S T E E M LT S H u m i d i f i e r3. DrainStandard-water models are programmed to automatically drain ifthere is no call for humidity after a defined time period.DI/RO models come standard with a manual drain, but maybe ordered with an electric drain to enable automated end-ofseason draining (requires Vapor-logic3 or signal by other).4. 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 useradjustable. DI/RO water systems do not require skimming. InDI/RO systems, the skimmer port functions as an overflow port.
LT S c o m p o n e n t s a n d p r i n c i p l e o foperation5. ValveUpon a call for humidity, the valve allows hot liquid to enterthe heat exchanger. The three-way hot liquid valve, shipped asstandard equipment, allows a constant flow of hot water at thevalve, resulting in a quick response to a call for humidity whenthe valve allows hot water into the heat exchanger (see Figure14-2 on Page 14).Figure 5-2:Water level control for DI/ROwater systemsFill valveFloat rod6. Heat exchangerThe heat exchanger transfers energy from hot liquid to the cleanfill water in the evaporating chamber, generating steam.Float ballVLC-OM-0267. Temperature sensorThis sensor, which is standard on all models with Vapor-logic3,enables: Freeze protection Preheating, allowing rapid response to a call for humidity8. 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.9. Steam outletPrinciple of operationSteam generated from the unit rises and exits through the steamoutlet and travels to the dispersion unit through either vaporhose or piping.Figure 5-1:LTS principle of operation1. When the system is first activated, thefill valve opens and the evaporatingchamber fills with water to the operatinglevel.2. On a call for humidity, hot liquid passesthrough the valve to the heat exchanger,causing water in the evaporatingchamber to boil. The fill valve opensand closes as needed to maintain theoperating water level.53. Hot liquid in the heat exchanger returnsto the hot liquid source.4. During refill in standard water systems, aportion of the surface water is skimmedoff, carrying away precipitated minerals.(DI/RO systems do not require skimming.)1432LTS-OM-195. Steam created in the evaporatingchamber flows through vapor hose orpiping to the dispersion assembly, whereit is discharged into the airstream.D R I - S T E E M LT S H u m i d i f i e r P a g e 5
LT S c o n t r o l o p t i o n sFigure 6-1:Vapor-logic3 keypadThe Vapor-logic3 keypad is easy to use andread, and it provides access to all humidifierfunctions.Optional control for standard water:LW417The LW417 controller monitors and adjustswater level, controls periodic draining andflushing, allows adjustable skim duration,and automates end-of-season draining. TheLW417 has four lights indicating: power, full,ready water and drain. Dip switches on thecontrol board can be field-set for automaticdraining and flushing frequency and skimduration. End-of-season draining is presetto activate after 72 hours without a call forhumidity.DI/RO water systems control waterlevel with a float/fill valveDI/RO humidifiers control water level witha float ball and fill valve (see Page 5).End-of-season draining is performed bymanually opening the drain valve, unlessthe humidifier is ordered with Vapor-logic3,which automates end-of-season draining.P a g e 6 D R I - S T E E M LT S H u m i d i f i e rAccurate, responsive control with Vapor-logic3Vapor-logic3 provides exceptional functionality, ease of use, andaccurate RH control. Standard on systems using tap or softenedwater, and required on DI/RO systems with optional end-of-seasondrain capability, this controller features: Real-time clock allows time-stamped alarm tracking and threeways to program drain and flush cycles:1. Usage (unit drains after a set number of pounds of water havecycled through)2. Usage and time (unit drains at a preset time after a set numberof pounds of water have cycled through)3. At a preset time Keypad 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– Password protection of setup parameters– Easy viewing in low-light environments– Three ways to mount the keypad:1. Hand-held, shipped with a 5' (1.5 m) cable2. Mounted on the control cabinet3. Mounted remotely using a standard telephone plate. Thekeypad can be located up to 500' (152 m; the maximumlength of the keypad cable) from the LTS. Tank temperature sensor, mounted on the evaporating chamber,allows Vapor-logic3 to provide:– Freeze protection– Tank preheating, allowing rapid response to a call for humidity PID control provides accurate, responsive and adjustable relativehumidity (RH) control. LonTalk interoperability allows communication with a LonTalkbuilding automation system using Standard Network VariableTypes (SNVTs). Note that LonTalk interoperability with abuilding automation system is not available when using multiplehumidifier control. Multiple-humidifier control 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.
Drip-free dispersion basicsGuaranteed absorption distancesUsing data collected in our on-site test lab, we have developedguaranteed steam absorption distances. Performance charts allowyou to confidently choose equipment that will accommodate anyapplication.Figure 7-1:DRI-STEEM dispersion tubesDry steamAdding humidification to an airstream without creating wetnessin the duct system is critical for the maintenance of a healthyenvironment. Wet areas in ducts are a threat to the health ofbuilding 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 7-2: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.For example, the Ultra-sorb dispersion panel has a unique doubleheader design that uses gravity to remove condensate. Steam entersthe supply header, escapes through the tubelets, and condensatedrains out the return header. In the Rapid-sorb dispersion unit,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.150-3bwFor more information about dispersion units, see Pages 8and 21-27.D R I - S T E E M LT S H u m i d i f i e r P a g e 7
LT S s t e a m d i s p e r s i o n o p t i o n sUltra-sorbThe multiple-tube Ultra-sorb allows virtuallyinstantaneous steam absorption. The factoryassembled panel can be installed within inchesupstream of dampers, coils or elbows withoutdripping.Figure 8-1:Ultra-sorb dispersionOM-910Figure 8-2:Rapid-sorb dispersionThe Ultra-sorb’s steam downflow designallows for high capacity dispersion. The unit ispreassembled at the factory within a mounting frame, andinstalls easily. Simply mount the panel and complete the steam andcondensate connections (see Pages 21-23).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 loadand/or when non-wetting absorption distance islimited. Rapid-sorbs are assembled on-site(see Pages 21 and 24-25).OM-911Figure 8-3:Single or multiple tube dispersionReduce wasted energy by up to 85% with High-efficiency tubesDRI-STEEM's PVDF insulated dispersion tubes reduce wastedenergy by up to 85% while significantly reducing airstream heatgain and dispersion-generated condensate production. Insulatingthe dispersion tubes makes more steam available for dispersion, andless is lost to condensate. High-efficiency dispersion tubes are anavailable option for Ultra-sorb and Rapid-sorb dispersion assemblies.For more information, see the Highefficiency Tube option brochure,available at www.dristeem.comSingle or multiple tubesOM-912Figure 8-4:Area-type dispersionSingle or multiple dispersion tubesare an excellent choice for lowercapacity applications or where there is room fora longer absorption distance (see Pages 21 and 26).Area-typeThe 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 LTSmodels operating at capacities up to 300 lbs/hr(136 kg/h). See Page 27 for more information.P a g e 8 D R I - S T E E M LT S H u m i d i f i e r
LT S c a p a c i t i e sTable 9-1:LTS output capacities using hot waterOutput (lbs/hr and kg/h)FlowLTS modelnumber25C100CPressure dropthrough heatexchangerHot water supply temperature240 F116 C250 F121 C260 F127 C280 F138 0.069400C*Notes:* Two heat exchangers and two valvesC Copper heat exchanger with nickel coatingThe LTS is not ASME-certified.D R I - S T E E M LT S H u m i d i f i e r P a g e 9
LT S c o n n e c t i o n s , w e i g h t s , w a t e rproperties, steam outletsTable 10-1:LTS connection sizesFigure 10-1:Hose connectionDescriptionConnection sizeWater makeup (fill)¼" pipe thread (DN8)Drain¾" (DN20) for standard water models 25C and 100C(and all DI water models)1" (DN25) for standard water model 400CSteam dispersionoutletVaries with capacity and dispersion type. To determine outlet size,see Dri-calc or the “Maximum steam carrying capacity and lengthof interconnecting hose, tubing, and pipe” table in the DRI-STEEMDesign Guide.Condensate return¾" pipe thread (DN20)Hot liquid supply inletand return outletSee dimensions tables.DC-1455Table 10-2:LTS weightsFigure 10-2:Threaded pipe connectionShipping weightOperating weightLTS 0C262119900409Table 10-3:Properties of water 212 F to 340 F (100 C to 171 C)*TemperatureDC-1456Figure 10-3:Flange connectionDC-1458P a g e 1 0 D R I - S T E E M LT S H u m i d i f i e rPressure F 10.1340171118.0813.1Note:* Valves supplied by DRI-STEEM have a maximum inlet water temperature of 280 F (138 C).
LT S d i m e n s i o n sFigure 11-1:Dimensions, LTS models 25C and 100C (one heat exchanger)Front viewSide viewKL5/16"dia. (M8)mountingholesHJADECFOM-931BOM-932Table 11-1:LTS dimensionsLTS model numberDescription25C100CinchesmminchesmmAOverall height*19.5049519.50495BFace width14.7537519.25490CFace length23.8360539.651007DDistance from bottom to returnoutlet of heat exchanger6.671696.67169EDistance from bottom to supplyinlet of heat exchanger3.67933.6793FDistance from side to heatexchanger3.20803.2080HHot liquid return outlet1.00251.0025JHot liquid supply inlet1.00251.0025KDistance from side to steam outlet7.3818710.75273LDistance from front to steam outlet2.50642.7570Notes:* Add 23.5" (597 mm) to overall height when LTS is mounted on optional support legs.C Copper heat exchanger with nickel coatingD R I - S T E E M LT S H u m i d i f i e r P a g e 1 1
LT S d i m e n s i o n s ( c o n t i n u e d )Figure 12-1:Dimensions, LTS model 400C (two heat exchangers)Front viewSide viewLKHJADEFCGBLTS-OM-03Table 12-1:LTS dimensionsLTS modelDescriptioninchesmmAOverall height*19.50495BFace width30.25768CFace length55.151401DDistance from bottom to return outlets of heat exchangers6.67169EDistance from bottom to supply inlets of heat exchangers3.6793FDistance from side to first heat exchanger4.20107GDistance from side to second heat exchanger16.50419HHot liquid return outlet1.0025JHot liquid supply inlet1.0025KDistance from side to steam outlet15.13384LDistance from front to steam outlet3.7595Notes:* Add 22.5" (572 mm) for total height with H-legs.C Copper heat exchanger with nickel coatingP a g e 1 2 D R I - S T E E M LT S H u m i d i f i e r400C
LT S p i p i n g( s t a n d a r d w a t e r, o n e h e a t e x c h a n g e r )Figure 13-1:Field piping overview for LTS models 25C and 100C (models with one heat exchanger)Shock arrester recommended toreduce water hammer, by installerSteam vapor outletWater supply shut-off valve, by installerIf water piping to humidifier is nonmetallic, we recommend a 2"(50 mm) metallic water seal or loop in the supply line to isolatesteam during maintenanceInstall levelWater supply line; water pressurerange 25 psi to 80 psi (172 kPa toOptional582 kPa); water conductivitycondensatereturn piping minimum 100 μS/cmfrom dispersionunitUnions, byinstallerAir venttubeModulating valve6" (152 mm)minimumAir vent heighturnretmust be equal to ordiugreater than H2t liqply(see table below) Hosupdiut liqHo¾" (DN20) minimumcondensate drain piping ratedfor 212 F (100 C)Install levelManual or electric drain valveH1(see Pitch1/8table)"Overlineflow/ftSeevalve detaildrawing onPage 14If run is over 10'(3 m), increase pipeto 1¼" (DN32)(1%)Waterline seal¾" (DN20) minimumdrain, skim andoverflow piping ratedfor 212 F (100 C)Water seal lineMUST be belowdrain valve toensure humidifierdrains correctly1" (25 mm) air gapOpen floor drain.See first note below.LTS-OM-01Figure 13-1 notes: Locate air gap only in spaces with adequate temperature and air movementto absorb flash steam; otherwise, condensation may form on nearby surfaces.Refer to governing codes for drain pipe size and maximum discharge watertemperature. The piping shown is for the standard three-way valve, normally closed to theheat exchanger. The three-way valve is recommended for constant system flow.If variable system flow is desired, a two-way valve located in the hot liquidreturn line is recommended. Offset humidifier from floor drain to prevent flash steam from rising into thehumidifier. Dashed lines indicate provided by installer. The water supply inlet is more than 1" (25 mm) above the skim/overflow port,eliminating the possibility of backflow or siphoning from the tank. No additionalbackflow prevention is required; however, governing codes prevail. Install vent or petcock in hot liquid supply line to ensure removal of entrained air. Damage caused by chloride corrosion is not covered by your DRI-STEEMwarranty. See the next page for recommended water supply piping for a DI/RO system orfor piping a system with two heat exchangers.Table 13-1:Heights required to overcomehumidifier internal pressure (H1, H2)Unit outputWater sealheight (H1)Air ventheight (H2)lbs/hrkg/hinchesmminchesmm 138 621230527686139–18363–831538130762 183 831845733838D R I - S T E E M LT S H u m i d i f i e r P a g e 1 3
LT S - D I p i p i n g( D I w a t e r, t w o h e a t e x c h a n g e r s )Figure 14-1:Field piping overview for LTS-DI 400C (DI model with two heat exchangers)Steam vapor outletWater supply line; water pressure range 25 psito 80 psi (172 kPa to 582 kPa). First 3' (1 m) ofsupply line must be rated for 212 F (100 C)Install levelIf water piping to humidifier is nonmetallic, we recommenda 2" (50 mm) stainless steel water seal or loop in the supplyline to isolate steam during maintenanceOptional condensate Strainer, by installerreturn piping fromdispersion unitModulatingAir vent tubevalve Horet t liquurn idHosup t liquply id6"(152 mm)minimumAir vent heightmust be equal toor greater thanH2 (see table onPage 13)Install levelOverlineflowSee valvedetail belowUnions, byinstaller¾" (DN20) minimumcondensate drain piping ratedfor 212 F (100 C)H1 (seetableon Page Pitch1/813)"/fIf run is over 10' (3 m),increase pipe to 1¼" (DN32) Locate air gap only in spaces with adequate temperature and air movement toabsorb flash steam; otherwise, condensation may form on nearby surfaces. Referto governing codes for drain pipe size and maximum discharge water temperature. The piping shown is for the standard three-way valve, normally closed to theheat exchanger. The three-way valve is recommended for constant system flow. Ifvariable system flow is desired, a two-way valve located in the hot liquid returnline is recommended. Offset humidifier from floor drain to prevent flash steam from rising into thehumidifier. Dashed lines indicate provided by installer. The water supply inlet is more than 1" (25 mm) above the overflow port,eliminating the possibility of backflow or siphoning from the tank. No additionalbackflow prevention is required; however, governing codes prevail. Install vent or petcock in hot liquid supply line to ensure removal of entrained air. Damage caused by chloride corrosion is not covered by your DRI-STEEM warranty. See the previous page for recommended water supply piping for a standard watersystem or for piping a system with one heat exchanger.Water seal lineMUST be belowdrain valve toensure thathumidifier drainscorrectlyWaterline seal%)1" (DN25) minimumdrain and overflowpiping rated for 212 F(100 C)Figure 14-1 notes:P a g e 1 4 D R I - S T E E M LT S H u m i d i f i e rt (1Manual or electric drain valve1" (25 mm) air gapOpen floor drain. Seefirst note belowLTS-OM-13Figure 14-2:Three-way valve detailAdquit liHo returnABeatm h ngerorF chatexhea gerTo chanexBdquit li plyoH upsWhen the three-way valve is retracted (in the upposition), flow is from B to AB, bypassing the heatexchanger.LTS-OM-21
LT S m o u n t i n gFigure 15-1:Trapeze hangerFigure 15-4:H-legsSecure rods to overhead construction3/8" (M10) threaded rodof length requiredProvide 18" (457 mm)minimum clearanceabove coverAngle or channel sized toproperly support humidifierHumidifier drain to appropriatebuilding waste. Do not drainhumidifier directly into drip pan.Install water seal as shown onPages 13 and 14.DC-1453LTS-OM-05Figure 15-2:Wall bracketsFigure 15-5:Support 0762BOptional set offour legs andhardwareDRI-STEEMoptional wall brackets(two required)DC-1454OM-933Figure 15-3:Recommended clearancesTop: 18" (457 mm)Left side withcontrol cabinetmounted: 36"(914 mm)Left side:6" (152 mm)Rear: 6" (152 mm)Table 15-1:Mounting options by modelLTS/LTS-DI modelsMountingmethod25C, 100CStandardTrapezeOptionalFront:36" (914 mm)Bottom:24" (610 mm)DC-1452StandardOptionalXH-legsRightside:6" (152 mm)400CXSupportlegsXWallbracketsXD R I - S T E E M LT S H u m i d i f i e r P a g e 1 5
LT S w e a t h e r c o v e rOptional LTS weather coverThe optional weather cover is waterresistant and designed to protect an LTSunit from rain and sun. The LTS 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 16-1:Weather cover exploded viewTop rear panelTop front panelRear panelRight side panelRear leftside panelFront leftside panelFront PanelOM-7466Figure 16-2:Weather cover dimensionsBCADOM-7465Table 16-2:Weather cover dimensionsTable 16-1:Weather cover weights*Weather cover sizelbskgLTS 25C, 100C425193LTS 400C550250Note:* Weight of the weather cover onlyP a g e 1 6 D R I - S T E E M LT S H u m i d i f i e rLTS 25C, 100CLetterLTS e from bottom2255922559
LT S o u t d o o r e n c l o s u r e o v e r v i e wOutdoor enclosure expands application flexibilityOutdoor humidifier operation in any climate is now possible withthe DRI-STEEM outdoor enclosure. This prepackaged, factoryassembled unit ships complete to the job site, ready for easy-toconnect water, electrical and hot liquid field connections to thepreinstalled humidifier inside. With a variety of available mountingoptions — curb, legs, or flush — installation is a snap.Figure 17-1:Outdoor enclosureOutdoor enclosure features Install on the ground or on the roof. Outdoor enclosures areideal for facilities that have limited interior space. Factory constructed and assembled. 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. Certified, tested and proven. In-house testing and numeroussuccessful installations have proven that the outdoor enclosureprovides reliable operation under extreme conditions. Easy access for service. 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. Protects in cold and hot climates. To ensure complete safetyand operation in all climates, the outdoor enclosure hassupplemental heating and ventilating systems that automaticallymaintain required operation conditions. DRI-STEEM humidifiershoused in outdoor enclosures operate properly when outdoortemperatures range from 40 F to 122 F ( 40 C to 50 C). Robust design. The outdoor enclosure is ruggedly built tocompletely protect internal components. The enclosure isconstructed of heavy-duty galvanized steel and is fully insulated.Gaskets on doors ensure a tight seal.Now you can install an LTS humidifier virtually anywhere with our enclosure for outdoor humidifier mounting. This prepackaged,factory-installed unit ships complete to thejob site, ready for easy-to-connect water andelectrical connections.D R I - S T E E M LT S H u m i d i f i e r P a g e 1 7
LT S o u t d o o r e n c l o s u r eFigure 18-2:Typical rooftop installation overviewFigure 18-1:Outdoor enclosure clearancesLeft side:36" (914 mm)Top:Back:Keep open12" (305 mm)Humidifier in outdoorenclosureRoof surfaceElectricalconnectionsFront:Right side:36" (914 mm)24" (610 mm)RemoteVapor-logic3keypadOM-955Steam pipingCurbDrain pipingWater pipingOM-7464Figure 18-3:Optional installation method for water supply pipingNormally closed fill valve(by factory)Disconnect box detail120VNMakeup watersupply piping(by installer)Open to drain120Vsupply(byinstaller)Vent with check valve(by installer)To solenoidvalves (byinstaller)ROOF DECKING120V from unitdisconnectDrain lineTo unitOM-954aOptional P-Trapdrain lineNormally closed(fail closed) ¼
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
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
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!
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
STEAM TABLE EXAMPLES. Q ICE SAT. ICE WATER COMP. LIQUID WATER Q Q SAT. LIQUID SAT. STEAM SAT. LIQUID SAT. STEAM SUPER-HEATED STEAM Q Q T T i ice point T T S . Liquid, Sat Liquid/Steam (Tables A-4, A-5, A-6, A-7) 0 100 200 300 400 500 0.0001 0.001 0.01 0.1 1 10 100 Specific Volume (m 3/kg) (o C)
2. Use the steam control to select the amount of steam you want ( m low, l medium, h high). 3.2. Squeeze the steam button to produce steam, release it to stop. NOTE: When you first start your steam station and pull the trigger for steam ironing, there will be a delay as your steam station pumps water from the reservoir to prime the system.
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