Steam Injection Standard and CLEAN-STEEM TM models suitable for a wide range of applications DRI-STEEM’s Steam Injection humidifiers use steam from an external source, such as an in- house boiler or a district steam system. They are adaptable to virtually any size application, and a wide variety of models will accommodate a broad range of steam absorption requirements. All models shown in this catalog are available in either a standard configuration or as a CLEAN-STEEM model. Choose AREA-TYPE TM for ductless spaces AREA-TYPE Steam Injection humidifiers are designed for open spaces such as warehouses and manufacturing spaces that may not have a duct system. The steam discharged from the humidifier is quietly dispersed by a fan without introducing water droplets into the air. For more information about AREA-TYPE humidifiers, see Pages 14-15. Quality construction from the industry leader For more than 30 years, DRI-STEEM has been leading the industry with creative and reliable humidification solutions. Our focus on quality is evident in the construction of our Steam Injection models, which feature cleanable, stainless steel and an industry-leading, two-year warranty that covers all parts. CLEAN-STEEM humidifiers for controlled environments Some humidification applications require steam that is completely devoid of impurities. For these applications, boiler steam is often derived from DI water and then dispersed into the air through one of our CLEAN-STEEM humidifiers. CLEAN-STEEM humidifiers are typically used in environments with exacting temperature, air cleanliness and humidity require- ments, such as hospitals, clean rooms, laboratories, and pharma- ceutical plants. With CLEAN-STEEM, a wide range of humidifier capacities, valve options and humidifier configurations are available. See the next page for a description of CLEAN-STEEM features, and individual Steam Injection model descriptions for capacities. Humidification system
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Steam Injection
Standard andCLEAN-STEEMTM modelssuitable for a wide rangeof applicationsDRI-STEEM’s Steam Injectionhumidifiers use steam from anexternal source, such as an in-house boiler or a district steamsystem. They are adaptable tovirtually any size application, anda wide variety of models willaccommodate a broad range ofsteam absorption requirements.All models shown in this catalogare available in either a standardconfiguration or as aCLEAN-STEEM model.
Choose AREA-TYPETM
for ductless spacesAREA-TYPE Steam Injectionhumidifiers are designed for openspaces such as warehouses andmanufacturing spaces that maynot have a duct system. Thesteam discharged from thehumidifier is quietly dispersed bya fan without introducing waterdroplets into the air. For moreinformation about AREA-TYPEhumidifiers, see Pages 14-15.
Quality constructionfrom the industry leaderFor more than 30 years,DRI-STEEM has been leadingthe industry with creative andreliable humidification solutions.Our focus on quality is evidentin the construction of our SteamInjection models, which featurecleanable, stainless steel and anindustry-leading, two-yearwarranty that covers all parts.
CLEAN-STEEMhumidifiers for controlledenvironmentsSome humidification applicationsrequire steam that is completelydevoid of impurities. For theseapplications, boiler steam is oftenderived from DI water and thendispersed into the air throughone of our CLEAN-STEEMhumidifiers.
CLEAN-STEEM humidifiers aretypically used in environmentswith exacting temperature, aircleanliness and humidity require-ments, such as hospitals, cleanrooms, laboratories, and pharma-ceutical plants.
With CLEAN-STEEM, a widerange of humidifier capacities,valve options and humidifierconfigurations are available. Seethe next page for a description ofCLEAN-STEEM features, andindividual Steam Injection modeldescriptions for capacities.
Humidification system
2
Steam Injection features.Fe
atur
es.Proven performance• Stainless steel construction
allows for instantaneous heat-up, which minimizes conden-sation and eliminates spittingon cold start-up.
• Stainless steel separatorefficiently removes entrainedwater droplets and slugs ofcondensate using provencentrifugal design.
• Modulating steam controlvalves provide accurate control.
• A wide selection of valve kvsfactors permits close matchingof humidifier output capacityto actual job requirements,which eliminates valve huntingand results in precise control.
• Steam control valves areindependent of separators,allowing easy removal forservicing and providingflexibility in choice of valveused.
• Special tube adaptor fittings(with two internal O-ring seals)permit valve removal withoutdisassembling the humidifierpiping.
• Lightweight constructionsimplifies installation; nospecial supports or hangers arerequired.
Application flexibility• Wide range of models and
absorption distances meetvirtually any humidificationneed.
• Steam is dispersed throughductwork or directly into aspace.
• Adaptable to vertical as well ashorizontal ducts
• Can be designed for usewith DI water, for creatingchemical-free steam (seeCLEAN-STEEMTM features)
Programmable controloption• Output is programmable for
on-off or modulating control.• Compatible with most building
management systems; acceptsall input signals
• Easy-to-use keypad interfacedisplays current conditionsand, in the unlikely event of anerror, displays fault codes toreduce troubleshooting time.
CLEAN-STEEM features• The use of Series 304 stainless
steel on all wetted parts reducescorrosion potential. When verypure DI steam is in use, 316stainless steel is an availableoption. Passivation of humidi-fier weldments is an optionalso.
• Standard stainless steel valvesare machined to precisetolerances and provide thehighest rangeability in theindustry. While a rangeabilityvalue of 40 to 1 is consideredexcellent, CLEAN-STEEMvalves are capable of achievingup to 60 to 1.
• Steam valve options includeelectric, modulating, electricon-off, or pneumatic. Thepurchaser may also specify thevalve manufacturer.
Guaranteed absorption• Steam-jacketed dispersion
tubes are fitted with thermal-resin tubelets that havecalibrated orifices to ensureuniform steam dispersionacross the duct width.
• Thermal-resin tubelets haveexceptional ability to trap noisegenerated by the valve, makingthe DRI-STEEM SteamInjection system the quietest inthe industry.
• Cataloged and guaranteedsteam absorption distances
• Published absorption tables forsizing and selecting the correctdispersion option
• DRI-STEEM’s DRI-CALC®
software is available forcomputer calculation ofabsorption distances anddispersion unit selection.
3
Overview of models.
Stea
m In
jectio
n m
odels
.
AREA-TYPETM
• Suitable for medium capacitysystems
• Used in ductless spaces• Application-dependent
absorption distances
Choose standard orCLEAN-STEEMTM
configurationAll Steam Injection models,shown here, may be purchasedin either a standard or aCLEAN-STEEM configuration.
Single-Tube• Suitable for small capacity
systems• Long absorption distance• Pre-assembled
MINI-BANK®
• Suitable for medium capacitysystems
• Sized for small ducts• Short to moderate absorption
distance• Pre-assembled
Multiple-Tube orMAXI-BANK®
• Suitable for large capacitysystems
• Range of sizes to fit small ductsto large air handlers
• Short to moderate absorptiondistance
• Multiple-Tube is fieldassembled (with interconnect-ing pipe supplied bycontractor)
• MAXI-BANK is factory-assembled (and includesinterconnecting piping)
4
Principle of operation.
1. Boiler steam with entrainedwater enters the humidifier atline pressure and flowsthrough a chambersurrounding the innerdispersion tube, jacketing itwith hot steam to eliminatecondensation and dripping.
2. The steam with entrainedwater slows from entering thelarger space of the separatorand from hitting theperimeter deflector plate, andbegins to spin and separate.
3. The separated steam risesthrough the slots of themulti-baffle plate to theupper region of the separatorand enters the internal dryingtube that excludes anyremaining moisture particles,allowing only dry steam toleave the separator.
4. Separated condensate drainsfrom the separator to thesteam trap.
5. The steam valve controls theamount of steam allowedinto the preheated dispersiontube. The steam valve istypically controlled in one ofthree ways:• Humidity controller
connected to the steamvalve
• Control by another signal,such as a buildingmanagement system
• DRI-STEEM’sVAPOR-LOGIC2
®
microprocessor controller.
6. Steam is dischargeduniformly through thetubelets into the airstream.Any condensate formedwhile passing through thesteam valve is re-evaporatedin the inner tube by the outersteam-heated jacket.
Notes:* Standard Steam Injection bronze valve only** CLEAN-STEEMTM stainless steel valve only*** 1" 8.2 Kvs valve is a Baumann stainless steel valve† Excessive valve wear may be experienced when supply steam pressure is more than 240 kPa.
Single-Tube capacity.
6
Table 6-2: Standard dispersion tube insertion lengths (L) in millimeterssretemillimnishtgnelebutnoisrepsiddradnatS
¾" thermostatic trapmount horizontally orvertically as shown
Trapping for standard model
J
Trapping for CLEAN-STEEM TM model
Supplied by others
Tube insertion length (L)minimum = "L" minus 20 mm
Supportbracket
¾" fittings
(by others)
Single-Tube dimensions.
Figure 6-1: Single-Tube dimensions
Table 6-1: Single-Tube dimensions
Notes:*Variable 0-50 mm
Notes:End support brackets are available only on tube lengths of 300 mm or longer.* Model 70 and 80 tubes are available in lengths up to 4875 mm in 305 mm increments.
Table 6-3: Shipping weights
Notes:* Includes control valve, drain trap and strainerSi
Notes:* At connection to humidifierA steam pressure of 35 to 70 kPa at inlet connection to separator is recommended forthe most accurate control and quietest operation.
MINI-BANK humidifiersThe MINI-BANK humidifier isdesigned for use in small ducts. Itis a pre-engineered and pre-assembled packaged unit, readyfor mounting and hookup.
Slimline dispersion tubes withlaboratory-tested, optimum tubespacing promote rapid steamabsorption without excessivestatic pressure loss and heat gain.
With precision orifices of varyingdiameters spaced 25 mm oncenter, tubelets ensure propor-tional steam dispersion along theentire length of the tubes.Smaller diameter tubelets areinserted near the ends of thetubes to compensate for lowervelocity airflow along the sides ofthe duct.
C D E F G H I J K L M Nmm 67 83 98 97 721 46 54 041 46 762 98 201
MINI-BANK dimensions.
Figure 8-1: MINI-BANK dimensions
Table 8-1: MINI-BANK specifications
Table 8-2: MINI-BANK dimensions
Table 8-3: MINI-BANK air pressureloss and heat gain
MIN
I-B
AN
K.
®
Non-insulated
View A'- A'
45 mm
35 mm
Insulated
F & T traps(shipped loose)
A C
B
DE
F
G
I
J
K
L
NM
Airflow
Duct
Tubeopenings
Note:2-pieceescutcheonplate can bemounted withinlimits of 64 mm
A’
A’
H
30 mm
25 mm
9
Multiple-Tube/MAXI-BANK capacity.The components of the Multiple-Tube humidifier are shipped loosefor on-site assembly. All header andinterconnecting piping is suppliedby the contractor.
The MAXI-BANK humidifier is amultiple-tube humidifier that isfactory assembled and shippedready for installation. TheMAXI-BANK features a stainlesssteel header and black steel inter-connecting piping.
Table 9-1: Multiple-Tube/MAXI-BANK maximum capacity (kg/h)
Table 9-1: continued
Notes:* Standard SteamInjection bronze valveonly** CLEAN-STEEMstainless steel valve only*** 8.2 Kvs SST valveis not available in Siebe.Use Baumann orWarren valve.
Valve manufacturerrecommends not toexceed 240 kPa pressuredrop across the SSTvalve. The table is basedon 7 kPa back pressureon valve.
Multiple-Tube/MAXI-BANK HumidifiersMultiple-Tube/MAXI-BANKhumidifiers are best suited forlarge capacity systems able toaccommodate a short to moder-ate absorption distance. They aredesigned to disperse steam evenlyacross an entire duct height andwidth.
Notes:Refer to Tables 9-1 and 10-1 for capacities. Refer to Tables 11-1, 11-2, 12-1,12-2, and 13-3 for dimensions.1. “X” shall not be greater than “E” dimension nor less than ½ “E.”2. Tubes should span at least 90% of coil or airstream width.3. Steam should discharge against airstream.4. If tubes are insulated, the dispersion tube will disperse with airflow.
ebuThtgnel
mm
-07&-06seiressebut
-08seiressebut
098ot016 18 951
0221ot519 59 402
0221 311 832
11
ebuT.oN
A B C D E F
06 "½ 84 12 92 15 201
07 "¾ 76 12 84 67 201
08 "½1 67 72 46 98 041
Mul
tiple-
Tube
.
Table 11-1: Multiple-Tube/MAXI-BANK dispersion tubedimensions in millimeters
Table 11-2: Multiple-Tube/MAXI-BANKseparator dimensions in millimeters
Note:* Includes control valve, drain trap and strainer.
Figure 11-1:Stainlesssteel jacket0,6 mm
B
D
C
E
A
Insulated Non-insulated
Figure 11-2:
Figure 11-3:
Note:See Table 11-2.
K
M
DN20 (¾")
H
J
40 mm
Supportbracket
Orificed tubelets
Insertion Length (L)See Table 10-1.
50-105 mm
F
¾" - 60 & 70 series1½" - 80 series
2-piece movableescutcheon plateSize 60 =105 mm x 105 mmSize 80 =155 mm x 155 mm
E.AREA-TYPE humidifierThe AREA-TYPE humidifier isdesigned for open spaces, such aswarehouses and manufacturingspaces, that may not have a ductsystem. The steam dischargedfrom the humidifier is dispersedby the fan. The AREA-TYPEhumidifier quietly distributessteam without introducing waterinto the air.
Application noteSteam discharged from thehumidifier turns into a fog that islighter than air. Should this fogcontact any solid surface before itis absorbed, it may collect aswater and drip.
Table 14-2: AREA-TYPEcomponents
* Sound level greater than 95 db.
TM
Figure 14-1:AREA-TYPE
Table 14-1: AREA-TYPE maximum capacity
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Continuous product improvement is a policy of DRI-STEEM Humidifier Company.Therefore, product features and specifications are subject to change without notice.
DRI-STEEM, CLEAN-STEEM, MINI-BANK, MAXI-BANK, VAPOR-LOGIC2 and
DRI-CALC, are Registered Trademarks of the DRI-STEEM Humidifier Company.
Ask a distributorMany years of hands-on experi-ence have made DRI-STEEMsales distributors humidificationexperts. Supported by a strongforce of DRI-STEEM applica-tion specialists, they are availableto assist with any humidificationneed.
Or let your computerfigure it outDRI-STEEM’s exclusivesoftware, DRI-CALC® is auser-friendly software programdesigned to save engineeringtime. The software sizes loads,selects equipment, writes specifi-cations, and creates equipmentschedules for DRI-STEEMproducts. It also includes draw-ings of products and an encyclo-pedia of humidification terms.
Industry-leadingwarrantyDRI-STEEM guarantees itsproducts will be free from defectsin materials and workmanshipfor a period of 27 months fromproduct ship date.
DRI-CALC® computer softwarecan help you size and select theright DRI-STEEM product foryour particular application.
Read ourHumidificationHandbookRead this handbook for every-thing you’ve ever wanted toknow about humidification. Itcontains more than 150 pages oftechnical information written ina very readable style. Thehandbook covers process require-ments, RH control suggestions,design of systems, load sizing,use of the psychrometric chart,various humidifier types, andinstallation recommendations.
See the videoAsk your distributor for ourshort video describing humidifi-cation essentials, indoor airquality (IAQ) issues, andDRI-STEEM's humidificationsystems.