Desiccant Dehumidification From 750 to 7,250...

Desiccant DehumidificationFrom 750 to 7,250 Scfm

Dry Desiccant DehumidificationSystems for Humidity Control

Founded in 1947, STULZ acquired Air TechnologySystems (ATS) in March 2001, naming the newcompany Stulz Air Technology Systems, Inc. (SATS).SATS is dedicated to providing innovative solutionsfor critical temperature and humidity control needs.SATS designs and manufactures specializedenvironmental control equipment for commercial,industrial and custom military applications. SATSserves a diverse marketplace - including telecommu-nications, information technology, medical, financial,educational, industrial process and governmentcontracts - utilizing world-class "island" manufacturingprocesses in a modern, 150,000 ft2 facility. Theaddition of SATS to the STULZ family of companiessolidifies STULZ as a global leader in the precision airconditioning marketplace. SATS combines a globalnetwork of sales and service companies with anextensive factory engineering staff and highly flexiblemanufacturing resources dedicated to providingworld-class quality, innovation and customer service.

ISO-9001:2001 Quality RegisteredStulz-ATS is committed to satisfying customerexpectations by meeting and exceeding customerrequirements. Our Quality Policy ensures that everyEmployee is committed to Customer Satisfaction,Teamwork and utilizing Continuous ProcessImprovement methods in order to deliver anexceptional product. We continually measure ourperformance to improve the effectiveness of ourquality management system.

SATS DESICAiR®- DRY DESICCANTDEHUMIDIFICATIONSATS DESICAiR dehumidifiers utilize a unique dry andstable desiccant. The desiccant is a synthesized silicagel that is permanently encapsulated in the rotor’s mo-lecular matrix. DESICAiR dehumidifiers provide precisehumidity and/or temperature control of either a roomor a process air stream such as may be required forpharmaceutical air preparation, tabletting, panning, etc;air conveying of hygroscopic products; preparation,hardening and packaging of confectionery, chocolate,candy; plastic molding operations; electronics manu-facturing, warehousing; archival storage of documents,films, artifacts or works of art; seed storage; invest-ment casting operations; stand by readiness of militaryhardware; battery manufacturing; general manufactur-ing; water remediation and many other applications.

DESICAiR dehumidifiers are available in sizes from50 to 15,000 scfm and with moisture removal capacitiesexceeding 500 Ibs per hour.

Stulz Air Technology Systems, Inc. (SATS)

PROCESSESPlastic Injection MoldingPharmaceutical Tabletting/ CapsulingElectronics ManufacturingCandy ProductionPackaging Operations

ENVIRONMENTALWarehouse & Storage FacilitiesMuseumsDocument ArchivesMilitary Equipment PreservationLaboratories & Clean RoomsPneumatic Conveying (Grain Elevators)Water Remediation

PERFECT FOR FLOOD DAMAGE RESTORATION!

DESICAiR Series DEZ 1000 and Series DES 2000dehumidifiers provide dry air for humidity controlwith many standard options.

DESICAiR DHP (Dry Handler Plus™) Seriessystems combine desiccant dehumidificationwith cooling, heating, humidifying, filtration andmany other custom features such as doublewall construction. This series facilitates singlesource, stand alone environmental control.

Product ReliabilityEach desiccant rotor is precision manufactured forlong life and low maintenance requirements anddriven by a positive grip synchronous drive belt.Each DESICAiR dehumidifier must pass stringentquality assurance testing before leaving ourfactory. SATS offers the industry’s only 5 year rotorprotection warranty as a standard!

Typical applications include:

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Table of ContentsSECTION - 1

Introduction to SATS.........................................1-1Table of Contents ............................................. 1-2

SECTION - 2

DESICAiR® SYSTEMS:How it Works .................................................... 2-1DHP Dehumidifier Advantages ...................... 2-2/9Model Nomenclature....................................... 2-10

SECTION - 3

SELECTED FEATURES:Standard/Optional Features .......................... 3-1/8

SECTION - 4

GUIDE SPECIFICATIONS:Guide Specifications ...................................... 4-1/7Microprocessor Controls ............................... 4-8/9Optional Features Guide Specifications .... 4-10/12

SECTION - 5

PERFORMANCE SPECIFICATIONS:

Performance Data ....................................... 5-1/10Performance Curves ................................. 5-11/13

SECTION - 6

DIMENSIONAL INFORMATION:

Dimensional Data “A” Cabinet ....................... 6-1/2Dimensional Data “B” Cabinet....................... 6-3/4

DESICAiR FAMILY OF PRODUCTS

DH 100 Series

DRY 500 Series

DEZ 1000 Series

DES 2000 Series

DHM 4000 Series

DHP 6000 Series

1-2

1

PROCESS AIR IN

2

34

PROCESS AIR OUT

9

REACTIVATION AIR IN

5

REACTIVATION AIR OUT

8

67

2-1

Desiccant Dehumidification - How It Works

How it Works ...Humid (process) air (1) is drawn into the dehumidifierthrough a filter (2) and a specially designed plenum.The air passes through the rotor (3) where moistureis adsorbed by the desiccant.

As moisture is adsorbed by the desiccant, heat isgiven off to the air stream. This heat gain causes thedry bulb temperature of the air stream to increase.The dehumidified air passes through a secondplenum and is discharged (4) by the process airblower.

The reactivation air (5) is drawn through a filter (6),heated (7) and enters the rotor through an insulatedplenum. Heating the air reduces the relative humidityof the reactivation air and increases its moistureholding capacity. The reactivation air also heats thedesiccant, reducing its moisture holding capacity anddelivers the necessary heat of vaporization to drivethe moisture from the desiccant in vapor form. As thisprocess continues, the reactivation air dry bulbtemperature is reduced due to the conversion ofmoisture to vapor. The reactivation air passes

through another plenum and is discharged (8) by thereactivation air blower.

The plenums are constructed to keep the processand reactivation air streams from mixing.

While the dehumidifier is operating, the rotor iscontinuously turned by the drive motor and belt (9).The moisture adsorbed from the process air streamis carried to the reactivation zone where the moistureis transferred to the reactivation air stream.

The air streams pass concurrently through the rotorin a counterflow air pattern. The process and reacti-vation air streams follow separate and isolated pathsthrough the dehumidifier. They are prevented frommixing by four significant design features:

• Entering through isolated plenums.• Solid rotor flute construction.• Unique process to reactivation face seals.• Double peripheral seals on each face.

DESICAiR DHP Series Desiccant Dehumidifier

DHP Series DehumidifiersThe DHP Series models are industrialduty dry desiccant dehumidifiers. Theydehumidify a space or process applica-tion to a humidity level chosen by theuser without lowering the air temperature.Using desiccant air drying technology,humidity can be reduced to levels belowthat which is achievable with a refrigera-tion based dehumidification system.Capacity range is from 750 through15,000 scfm.

DHP Series dehumidifiers even allow coldair streams to be dehumidified withoutfurther reducing the air temperature, sofreezing and/or frosting of components isprevented. Air to be dehumidified is drawn into the unit, filtered, dehumidified and then supplied to the spaceor process to be conditioned. Each dehumidifier is complete with all the necessary blowers, controls, filters anddrive components to assure the safe and automatic operation of the unit. Single point electrical power connec-tion is provided.

DHP Series Systems Offer Outstanding AdvantagesFlexibilityThe DryHandler Plus is manufactured using pre-designed modules which are integrated together withthe main DryHandler module on a single mountingskid. With this method SATS can rapidly incorporatecustom features using a standardized approach tothe system design and manufacture.

Versatility• Space or Process Conditioning

Standard Features• Durable Protective Finish• Skid Mounted- Eases Moving and Placement• Filtered Air Inlets• Vibration Isolated Process Blower• Easy to See Static Pressure Gauges

A range of options to meet your needs:• Electric, Gas or Steam Powered Reactivation• Round or Square Duct Connections• Status Indicator Lamps• Remote Unit Starting/Monitoring

Range of SizesA range of flow capacities to meet your space orprocess conditioning requirements from 750 to 7,250scfm.

Non-Proprietary PartsAll DHP Series systems incorporate non-proprietarycomponents where possible. Most major HVAC,refrigeration or electrical distributors stock an exactmodel cross reference or an alternate to most factoryprovided components.

Code Conformance

• Control enclosures are certified to UL508A Stan-dards.

• Gas reactivation units are designed toNFPA guidelines.

• Electric, Steam & Gas reactivation units may beoptionally certified to UL1995 Standards byNationally Recognized Testing Laboratories(NRTL).

Comprehensive WarrantyAll parts are warranted for two years from date ofinstallation.Note: Certain terms and conditions apply.

5-Year Rotor Warranty - The desiccant rotor isprotected with an exclusive SATS DESICAiR warrantyfor five (5) years against softening or collapse due toexposure to humid air.

2-2

Solid State ControlsPrecision humidity management with unrivaled, userfriendly controls that offer a wide range of functionsand features. Capacity controls are used to meet adesign control criteria or space condition. Do youneed to maintain RH, condensation or dew pointcontrol? With SATS/DESICAiR you can specify thetype and tolerance of control that you require foreach demanding project.

Desiccant RotorThe advantage to ourdehumidifying technologyis in the rotary style,desiccant rotor which ismanufactured using aunique, media (substrate)formulated for maximumperformance with minimalmaintenance.

The high performance silica gel desiccant is non-corrosive and non-toxic. The rotor is equipped with anon-slip, synchronous, belt-drive system.DHP Series dehumidifiers utilize an 8" deep rotor to

achieve the published performance data. For dewpoint requirements below those shown, please consultthe factory.

The desiccant is not adversely affected by exposureto air even at 100% relative humidity nor to idle or toprolonged storage in humid atmospheres. Thedehumidification rotor is capable of sustained opera-tion with either or both the process or the reactivationblower operating without reactivation heat applied.Such operation does not cause loss of desiccant orsoftening of the rotor.

The rotor is cleanable with either warm water, deter-gent or a solvent solution without damage or loss ofdesiccant. Performance is virtually unaffected. Degra-dation due to washing of the rotor is less than 3%over 10 years. This slight loss in performance isaccounted for in the published performance data.Initially, measured performance of a dehumidifier isactually better than indicated by the published datadue to SATS’s conservative approach to applicationsengineering.

The desiccant rotor is backed by a standard exclusivewarranty for five (5) years against softening or col-lapse due to exposure to humid air.

DHP Series Dehumidifiers - Outstanding Advantages

2-3

DHP Series Systems- Superior Features

DESICAiR DHP Modular ConstructionAir treatment modules, shown above, may be selected as required for a particular application. This approach allowsspeedy delivery of dehumidification systems that are efficiently manufactured using proven design features.

Front View

BLOWER MODULE

REACTIVATION HEATER

AIR IN

PROCEAIR OU

HINGED ACCESSDOORS

HER HOODEEN (OPTIONAL)

WEATHER HOODW/SCREEN (OPTIONAL)

FILTERMODULE

FILTERMODULE

DHP DEHUMIDIFIERMODULEMODULE MODULE

DIFFERENTIAL RESSUREGAUGE BOXESELECTRIC BOX


Pressure Indicating GaugesDifferential pressure indicatinggauges are provided to indicatethe pressure drops across therotor for air balancing.

Separate gauges are provided forprocess and reactivation airstreams. The gauges are factorymounted on the cabinet andvisible without requiring the remov-al of any panels or access covers.The gauges have a large face anddial and are suitable for eitherindoor or outdoor applications.

Air SealsThe process and reactivation sections are providedwith air seals to prevent leakage and mixing of one airstream to the other.

The rotor face seals are constructed of a two plymaterial with the contact surface made of a reinforcedPTFE material. The PTFE is bonded to a flexiblebacker to allow for thermal expansion and contraction.The seals and rotor construction allow for indepen-dent adjustment and balancing of the process orreactivation air flow. Dual, double lipped, continuoushigh temperature silicone seals are utilized to seal therotor periphery flange. Balloon or bulb type seals,which tend to split, are not used.

BlowersProcess Air Blower:A process air blower is provided and sized for the airrequirements of standard DHP Series units as listed inthe performance tables in section 5. The externalstatic pressure (ESP) available for standard units isalso shown in the tables.

Smaller units utilize directdriven process air blowers.Larger units utilize dual beltdriven process air blowers thatinclude an adjustable pulley toallow for field adjustment.

The process blower shaft is sealed to prevent mois-ture infiltration into the dehumidification system. Thestandard blower orientation is horizontal discharge.Up blast or other discharge orientations are available.

Reactivation Air Blower:A reactivation blower is provided and sized for the airrequirements of standard units. DHP Series unitsutilize direct drive reactivation blowers as standard.The standard blower orientation is horizontal dis-charge. Up blast or other discharge orientations areavailable as factory options.

MotorsIndustrial duty motors for either process or reactiva-tion blowers are TEFC and suitable for either indooror outdoor installation. Premium efficiency motors arealso available.

DampersManual air flow regulating dampers are provided asstandard on all direct drive blowers. Direct driveblowers have a single blade damper with bronzebushing. An external adjusting arm and positivelocking mechanism is included.

Opposed blade air flow regulating dampers areoptionally provided for belt driven blowers and formixing sections. When provided, opposed bladedampers are constructed of galvanized steel framesand blades, compressible stainless steel side seals,santoprene blade seals and acetal bearings. Manuallocking hardware is provided.

Motorized dampers are provided with a direct cou-pled, electric actuator.

Rotor DriveThe rotor drive system is equipped with all the neces-sary componentsfor continuous slipfree operation.The drive systemconsists of aspeed reducer,belt tensioner anda reinforcedsynchronous drivebelt. Matchingcleats are perma-nently mounted onthe rotor.

Rotor rotation iscontinuous. Thisfeature prevents humidity “spikes” caused by intermit-tent or indexing type machines. The rotation speed ispredetermined and is selected to achieve maximum

2-4


2-5

dehumidification effectiveness.

The rotor is shaft mounted and supported by ballbearings for long life and minimum maintenance. Theball bearings support the full weight of the rotorwithout inducing stress on the rotor’s outer wrapperor flutes.

Rotor rotation failure detection is not required toprotect the rotor and is not provided on standardunits however, it is available as a factory installedoption.

The speed reducer drive motor is housed within thecassette section of the dehumidifier cabinet and isnot exposed to ambient conditions.

Reactivation HeaterDHP Series units are available with electric, steam orgas fired reactivation heater sections. Heaters arecontrolled by an adjustable, solid state proportionalcontrol system designed to prevent overheating andprovide energy conservation by matching heat inputto the required moisture removal rate. The reactiva-tion heater section is mounted in an insulated hous-ing to minimize heat loss and to prevent incidentalcontact with hot surfaces by operating or servicepersonnel. This important conservation and safetyfeature is provided for all DHP Series units.

Electric Reactivation:Electric reactivation heaters havethree (3) levels of safety: airproving, high temperature over-heat cut out and leaving reactiva-tion temperature control. A reacti-vation cool down cycle removesresidual heat from the systemwhen the unit shuts down.

Electric reactivation heatersinclude an air proving safety switchthat is wired in the heater controlcircuit to prevent the heater fromoperating during loss of reactiva-tion airflow.

Additionallly, two high temperature safety cutouts areinstalled in the heater control circuit. One tempera-ture sensor is located between the heater and therotor inlet. The second temperature sensor is in-stalled in the reactivation air discharge. In the event

of an overheat occurrence, a fault light located onthe operator’s panel is signaled. A manual resetdevice is provided in order to avoid attemptedoperation by automatic resetting devices during afault condition.

Steam Reactivation:Steam heating coils are housed in an easily accessi-ble insulated section to ensure maximum thermaltransfer to the reactivation air stream and provide forpersonnel safety. This innovative design featurecomplies with OSHA regulations concerning person-nel safety protection from hot surfaces. Steam coilsare the non freeze steam distributing type. Coilconnections are stubbed out through the dehumidifi-er cabinet. Coil removal is provided through the frontof the cabinet as part of the service access.

The “heated to” temperature is limited by the supplysteam pressure. The reactivation leaving tempera-ture is automatically controlled by a factory installedsolid state controlled modulating damper. Thisstandard control feature conserves steam consump-tion by matching energy input with the requiredmoisture removal rate. When humidity loads are lessthan design conditions the controller modulates thedamper toward the closed position. As this modula-tion occurs, less air passes over the steam coilscausing less steam to be condensed. The damperspring returns closed when the unit is shut down orpower is removed. Since the steam coils do not “cooldown” unless the steam supply is turned off, a cooldown cycle is not required.

Direct Fired Gas Reactivation:Direct fired natural or LP gas reactivation heaters areavailable and include all the necessary controls todetect and monitor the gas flame. The ignitionsequence is controlled by a UL/FM/CSA approvedflame safety relay device. Controls include an airproving switch that is wired in the heater controlcircuit to prevent the heater from operating if thereactivation blower fails. An observation window isincluded to allow for the visual confirmation of thegas flame without removal of a service panel.

Two high temperature safety cutouts are installed inthe heater control circuit. One temperature sensor islocated between the heater and the rotor inlet. Thesecond temperature sensor is installed in the reacti-vation air discharge. In the event of an overheatoccurrence, a fault light located on the operator’spanel is signaled. A manual reset device is provided

in order to avoid attempted operation by automaticresetting devices during a fault condition.

A control system regulates the reactivation leavingtemperature. Energy saving automatic modulation ofthe gas supply is provided as standard. The gas firedreactivation heaters are mounted in double-wallsections with 300 series stainless steel liners.

The gas train is designed to NFPA guidelines. Compli-ance to local codes for venting and other require-ments are the responsibility of the owner.

The pilot flame can be adjusted and set independentof the main flame. Separate gas pressure regulatorvalves are provided for the pilot and main gas line. Aspark igniter system is used. Gas fired reactivationheaters have at least eight (8) levels of control andsafety features: air proving, ignition control, flamedetection, high gas pressure cutout, low gas pressurecutout, slow opening main gas supply valve, “heatedto” high temperature limit and reactivation leavingtemperature control. A reactivation cool down andpurge cycle removes residual heat and the by prod-ucts of combustion from the system when the unitshuts down. Indirect gas fired reactivation heaters areavailable as an option.

Cabinet ConstructionThe dehumidifier is constructed of high grade 5052aluminum alloy for corrosion protection. Standardunits have 1/8" thick single wall construction with rigidsupports. The outer surface is coated with an industri-al self etching “direct to metal” high quality low VOCepoxy coating. This coating system is designed foreither indoor or outdoor exposure.

Hinged service access doors or removable panels areprovided to allow for the service or replacement of all

major components without disconnecting duct work orpower supply connections. Full jam gaskets arestandard to prevent moisture infiltration into thecabinet. Convenient, turn-to-lock handles are provid-ed on access doors.

Test ports are provided as standard. Ports arelocated to allow for the measurement of temperatureor humidity both upstream and downstream of thedesiccant rotor. A port is also provided to allow for themeasurement of the reactivation “heated to” tempera-ture. These convenient test ports allow for the confir-mation of design conditions during startup andoperating cycles.

Double wall construction with 2” internal insulation isavailable as an option for applications when the inletair temperature is below the ambient air dew pointtemperature to prevent condensation from forming onthe cabinet. This option will also retard heat gain to alow temperature space should the dehumidifier belocated within the controlled space.

Process Air Blower Orientation:Standard units are of the Left hand orientation asshown in the preceding photo. The photo depicts aDHP unit with an optional, process air inlet weatherhood. The process air outlet is on the left side (hid-den from this view) as you are facing the accesspanels on the front of the unit. Right hand process airoutlet orientations are also available.

Skid:The dehumidifier skid is designed to support the fulloperating weight of the unit and to allow for rigging,transportation and handling at the job site. Liftingpoints are provided as standard to assist in loadingand placing the equipment at the job site.

Connections:All air connections have flanges as standard. Flangesare left blank for match drilling in the field. Optionalinlet and outlet designs include weather protectedhooded intakes or hooded outlets.


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FiltersTwo inch thick, replaceable 30% pleated filters areprovided as standard. Process air filters are easilyaccessed through hinged doors. Side access isprovided for reactivation air filters. High efficiency andHEPA filters are optionally available. HEPA filterapplications should consult the factory. Filter differen-tial pressure indicating gauges and Dirty Filter alarmsare available as factory installed options.

Unit ControlsA front access control panel with an ON/OFF/AUTOselector switch and status indicator lights is standard.The switch and indicator lights are panel mounted ona NEMA 4 electrical enclosure and are rated foroutdoor service. The control panel is listed UL508A.

Switch PositionsON: In the “ON” mode the dehumidifier operatescontinuously.

OFF: In the “OFF” position all motors, drives andheaters are de-energized. Upon shut down of thedehumidifier, the process blower and reactivationheater are de-energized. For electric and gas firedreactivated units, the rotor drive and reactivationblower continue to operate during a cool down cycle.This cool down cycle removes residual heat from therotor and reactivation sector.

AUTO: Automatic capacity control using one of four,factory configured control methods that are availableto fit your application. See Capacity Control Methodson next page.

Status indicator lights are mounted on the electricalenclosure front panel. Lights indicating Power On,Unit On and Fault Condition are standard. The unitOn light and Fault lights include a “Press-To-Test”feature to check light bulb operation.


Microprocessor Based SystemControlsMicroprocessor based controls are offered for controlof all DHP operations. The operator is given the abilityto select temperatures, relative humidity and/ordewpoint levels as desired for their process conditionor space. Building Management Systems are easilyinterfaced to the controls. The controller interfaceswith the industry standard building managementsystems such as BAC-NET, MODBUS, etc.

D-Tech 20 ControllerThe D-tech 20 is designed by industry leading engi-neers who’ve incorporated decades of experienceinto developing a controller complete with the mostsought after features. The D-Tech 20 controllerutilizes an advanced programmable microprocessorwith software designed specifically for the DHP Seriesdehumidifiers.

D-TECH 20 CONTROLLER

The D-Tech 20 operator interface panel includes aback-lit 4 line x 20 character alphanumeric display.The program is user friendly with operator prompts.The menu driven loop structures assist the operatorwith navigating through the various screens.

DHP Control FlexibilityDHP systems are designed to operate with a varietyof optional controllers as specified.

This greater flexibility enables easy integration intoexisting building control systems. Building Manage-ment Systems are easily interfaced to the controls.

SATS/DESICAiR dehumidifiers are offered with aselection of capacity control methods. Dehumidifiersare designed to meet maximum operating require-ments specified for the humidity control project. Mostof the time, the dehumidifier is operating at less than

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DHP Series Dehumidifiers - Outstanding Advantagespeak design conditions. If not controlled properly, toomuch energy would be consumed to meet perfor-mance requirements. Energy conservation controlensures that enough reactivation energy is applied tomeet the performance by modulating the reactivationheater. DHP Series capacity control methods utilizethe built-in, variable capacity of the high performancesilica gel desiccant to maintain the desired controlsetpoint.

Energy conservation is becoming an increasinglyimportant factor for engineers to consider whendesigning building environmental controls. Customaryface and bypass control, used to maintain humiditylevels, is rendered archaic when compared withexclusive energy saving capacity control methodsdesigned by SATS.

Capacity Control MethodsD-Stat II™:The D-Stat II control system is recommended wherethe dehumidifier is part of an air handling system orwhere control tolerance is more critical.

The dehumidifier responds to a control signal from ahumidistat. In the “AUTO” mode the dehumidifierresponds to a humidistat and remote start/stop signal.A wall mounted humidistat is available as an option forfield mounting. Terminal connections are included inthe electrical enclosure for connection of the humidis-tat. The D-Stat control system cycles the reactivationheater and blower On and Off to save energy whilethe process blower operates continuously. Thisfeature provides for an uninterrupted supply of air tothe space or process area. This is particularly impor-tant in systems where the humidity is just one of thecontrolled parameters. Air volume for upstream ordownstream heating or cooling processes are unaf-fected by the D-Stat II control system. The uniqueSATS control system monitors both the reactivationheater temperature and reactivation leaving tempera-ture to provide optimum drying while minimizingenergy consumption.

A wall mounted humidistat is available as an option forfield mounting.

“Trac” Control SystemsThe exclusive Dew-Trac™, H-Trac™ and C-Trol II™proportional control systems continuously adjust thedehumidifier capacity in response to load changeswithin the controlled space. Load changes can occurdue to changes in manufacturing rates, ventilation,product movement in, or out, of the “space” or man-

2-8

power requirements, etc. Since capacity is controlledby reactivation energy, only the minimal amount ofenergy is required to maintain design conditions.

Dew-Trac and H-Trac control methods can be utilizedfor precise humidity control without the use of custom-ary face and bypass damper sections. By eliminatingthe damper section, air instability, damper “leakage”,and actuator hysteresis are eliminated. Serviceintervals are extended as fewer mechanical compo-nents are required. Response to a change in load israpid and initiates as quickly as the signal reachesthe heater control system.

Dew-Trac:The Dew-Trac control system is recommended forapplications where the controlled humidity level isbelow the capability of a relative humidity sensor orwhere the dew point control is more critical to themanufacturing or laboratory process than controlbased upon relative humidity.

The dehumidifier responds to a control signal from adew point transmitter. In the “ON” mode the Dew-Traccontroller automatically regulates the reactivationheater to provide a constant process air leaving orspace dew point temperature. In the “AUTO” modethe dehumidifier responds to a remote start/stopsignal. The Dew-Trac control feature may include anoptional space mounted dew point sensor/ transmitterand adjustable set point microprocessor controller.

H-Trac:The dehumidifier responds to a control signal from anoptional unit mounted or space mounted relativehumidity transmitter. In the “ON” mode the H-Traccontroller automatically regulates the reactivationheater to provide a constant relative humidity of eitherthe process air or “space” condition. In the “AUTO”mode the dehumidifier responds to a remote start/stop signal. The H-Trac control feature may includean optional adjustable set point microprocessorcontroller. With the H-Trac control system, the dehu-midifier runs continuously and maintains a constantrelative humidity.

C-Trol II:The C-Trol II control system is recommended toprevent dripping and damage caused by condensate.The dehumidifier responds to a signal from thesystem controller to prevent condensation fromforming on cold surfaces such as pipes, tanks,pumps or any surface in contact with a cold liquid. Acold surface temperature sensor and a space RH/

temperature sensor are field installed by the contrac-tor. The controller compares the cold surface temper-ature to the ambient dew point temperature (calculat-ed by the controller) and controls the reactivationheater output as required.

Reactivation is controlled to maintain space dewpointto 5 degrees below the cold surface temperature. Ifthe space dewpoint is satisfied and the reactivationheater output is 0% for a pre-determined time period,the reactivation heater and blower will turn OFF tosave energy. When dehumidification is again re-quired, the reactivation will automatically re-start. Theprocess blower runs continuously.

Wiring Practices:Branch circuit protection, motor starters and overloadprotection are provided in accordance with the latestedition of the National Electric Code. All wiring is runin flexible liquid tight conduit. All wires are individuallynumbered and harness bundles are neatly tiewrapped. A grounding lug is provided in the electricalenclosure.

A lockable disconnect switch is available. It may beprovided as a factory installed option or shippedloose for field installation. When factory installed, thedisconnect is mounted on the dehumidifier cabinetand the power cable is factory wired between thepower supply terminals located within the electricalenclosure and the disconnect.

An elapsed run time hour meter isprovided as standard. The hourmeter is mounted within the electricalenclosure.

Pre/Post CoolingCooling coils may be mounted in the process air-stream before and/or after the desiccant rotor. Thecooling modules may use either DX (direct expansion)refrigeration or a CW (chilled water) cooling process.Pre-cooling may be used to cool and condensemoisture from the process airstream before it entersthe rotor. Moisture from the air condenses on the finsof the coil(s) and collects in a drain pan positionedbeneath each coil. Post cooling may be used to coolthe process air after it passes through the rotor. Postcooling may be used for maintaining the temperatureof the air being delivered to the space or processapplication. A stainless steel drain pan is provided foreach cooling coil.

DHP Series Dehumidifiers - Outstanding AdvantagesCondensing Units:A Remote Condensing Unit (RCU) is required tocondense refrigerant in DX cooled systems. The RCUmay be customer provided or selected as an optionand sized by SATS. R-22 refrigerant is utilized as astandard. Other refrigerants are optionally available.

Pre/Post HeatingHeating coil(s) may be mounted in the process airstream before the process side of the rotor for pre-heating and/or after the process side of the rotor forpost heating the process air. The heating modulesmay be electric heating elements or hot water/steamcoils.

Pre-heating may be used in cold environments toprevent the pre-cooling coils from freezing or icingover. Post-heating may be used to heat the processair after it passes through the rotor; for maintainingthe temperature of the air delivered to the space tobe conditioned.

Air Mixing ModuleAn air mixing module is optionally available with amanual balancing damper and manual locking hard-ware as standard.

Power SupplyA single point electrical power connection is provided.An optional main power disconnect is available. DHPSeries dehumidifiers are designed to operate using480/3/60 input power. Optional operating voltagesavailable are (208/230)/3/60 and 575/3/60. Optional50 Hz operation is also available.

WarrantySATS provides a limited warranty for 24 months fromdate of start up for mechanical and electrical compo-nents. Normal wear and tear is excluded. (Certainterms and conditions apply.) The desiccant rotor iscovered by an exclusive 60 month warranty againstsoftening or collapse even if exposed for prolongedperiods to saturated air.

Start UpStart up kits including replacement fuses control panelindicating lamps, blower belts and filters are available.

Supervision of start up activity or performance ofstartup can be provided by the SATS Product SupportGroup or by a factory authorized contractor for alldehumidifiers.

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DHP Series Dehumidifiers - Model Nomenclature

MODEL NOMENCLATUREDesicaire Product Identification Number

DHP – 4 2 5 0 – 1 0 7 – G – L –S

DHP= DryHandler™ Plus Cabinet ConstructionS =Single Wall

750 CFM D =Double Wall1150 CFM1500 CFM Cabinet Configuration2250 CFM L =Left Hand2750 CFM R =Right Hand3000 CFM3750 CFM Reactivation Types

Nominal Process Airflow = 4250 CFM S =Steam5500 CFM G =Gas6000 CFM E =Electric7250 CFM

055 cm077 cm107 cm122 cm

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3-1

“DHP” Model -750-55 -1150-55 -1500-55 -1500-77 -2250-77 -3000-77

Configurable Features - DHP Series Dehumidifiers

Dry Handler Module• Silica Gel Desiccant Rotor Standard Standard Standard Standard Standard Standard• Molecular Sieve Rotor Optional Optional Optional Optional Optional Optional• High Efficiency Rotor Opt Opt Opt Opt Opt Opt• Rotor Static Presssure Indicating Gauges Std Std Std Std Std Std• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt• Rotor Viewing Window Std Std Std Std Std Std

Reactivation Module• Direct Drive Motor Std Std Std Std Std Std• Flanged Air Inlet Std Std Std Std Std Std• Screened Air Inlet with Weather Hood Opt Opt Opt Opt Opt Opt• Flanged Air Outlet Std Std Std Std Std Std• Screened Air Outlet with Weather Hood Opt Opt Opt Opt Opt Opt• Inlet Filter- 30% Pleated Std Std Std Std Std StdElectric Reactivation Module• Nichrome wire Element(s) Std Std Std Std Std Std• Solid State Proportional Control Std Std Std Std Std Std• High Temperature Cut Out Std Std Std Std Std Std• Air Proving Switch Std Std Std Std Std StdGas Reactivation Module• Direct Natural Gas Std Std Std Std Std Std• Direct Propane Gas Opt Opt Opt Opt Opt Opt• High Temperature Cut Out Std Std Std Std Std Std• High/Low Gas Pressure Cut Out Std Std Std Std Std Std• Gas Pressure Regulating Valves Std Std Std Std Std Std• Air proving Switch Std Std Std Std Std Std• Burner Static Pressure Indicating Gauge Std Std Std Std Std StdSteam Reactivation Module• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Auto Modulating Damper Control Std Std Std Std Std Std

Make-up Air/Mixing Box Module - (Standard Module Width is 24”)

• Manual Damper Control Std Std Std Std Std Std• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt

Pre-Filter Module - (Standard Module Width is 24”)

• 30% Pleated Std Std Std Std Std Std• High Efficiency 45%-95% Filters w/Pre-Filter Opt Opt Opt Opt Opt Opt• HEPA Filters -----------------------------------Consult Factory----------------------------------• Dirty Filter Indicating Gauge Opt Opt Opt Opt Opt Opt• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt

Post Filter Module - (Standard Module Width is 24”)

• 30% Pleated with Pre-Filter Std Std Std Std Std Std• High Efficiency 45%-95% Filters w/Pre-Filter Opt Opt Opt Opt Opt Opt• HEPA Filters -----------------------------------Consult Factory----------------------------------• Dirty Filter Indicating Gauge Opt Opt Opt Opt Opt Opt• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt

>>> DHP Dehumidifiers may be configured from available modules listed <<<

Configurable Features

3-2

“DHP” Model -2750-107 -4250-107 -5500-107 -3750-122 -5500-122 -7250-122

Configurable Features - DHP Series Dehumidifiers

Dry Handler Module• Silica Gel Desiccant Rotor Standard Standard Standard Standard Standard Standard• Molecular Sieve Rotor Optional Optional Optional Optional Optional Optional• High Efficiency Rotor Opt Opt Opt Opt Opt Opt• Rotor Static Presssure Indicating Gauges Std Std Std Std Std Std• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt• Rotor Viewing Window Std Std Std Std Std Std

Reactivation Module• Direct Drive Motor Std Std Std Std Std Std• Flanged Air Inlet Std Std Std Std Std Std• Screened Air Inlet with Weather Hood Opt Opt Opt Opt Opt Opt• Flanged Air Outlet Std Std Std Std Std Std• Screened Air Outlet with Weather Hood Opt Opt Opt Opt Opt Opt• Inlet Filter- 30% Pleated Std Std Std Std Std StdElectric Reactivation Module• Nichrome wire Element(s) Std Std Std Std Std Std• Solid State Proportional Control Std Std Std Std Std Std• High Temperature Cut Out Std Std Std Std Std Std• Air Proving Switch Std Std Std Std Std StdGas Reactivation Module• Direct Natural Gas Std Std Std Std Std Std• Direct Propane Gas Opt Opt Opt Opt Opt Opt• High Temperature Cut-Out Std Std Std Std Std Std• High/Low Gas Pressure Cut-Out Std Std Std Std Std Std• Gas Pressure Regulating Valves Std Std Std Std Std Std• Air proving Switch Std Std Std Std Std Std• Burner Static Pressure Indicating Gauge Std Std Std Std Std StdSteam Reactivation Module• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Auto Modulating Damper Control Std Std Std Std Std Std

Make-up Air/Mixing Box Module - (Standard Module Width is 24”)

• Manual Damper Control Std Std Std Std Std Std• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt

Pre-Filter Module - (Standard Module Width is 24”)

• 30% Pleated Std Std Std Std Std Std• High Efficiency 45%-95% Filters w/Pre-Filter Opt Opt Opt Opt Opt Opt• HEPA Filters -----------------------------------Consult Factory----------------------------------• Dirty Filter Indicating Gauge Opt Opt Opt Opt Opt Opt• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt

Post Filter Module - (Standard Module Width is 24”)

• 30% Pleated with Pre-Filter Std Std Std Std Std Std• High Efficiency 45%-95% Filters w/Pre-Filter Opt Opt Opt Opt Opt Opt• HEPA Filters -----------------------------------Consult Factory----------------------------------• Dirty Filter Indicating Gauge Opt Opt Opt Opt Opt Opt• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt



“DHP” Model -750-55 -1150-55 -1500-55 -1500-77 -2250-77 -3000-77

Configurable Features (cont.) - DHP Series Dehumidifiers

Pre-Cool Module Chilled Water Cooled

• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Stainless Steel Casing Std Std Std Std Std Std• 3-Way Mixing Valve with Electric Actuator Opt Opt Opt Opt Opt Opt

DX Cooled• Split interlaced, Dual Distributer Coil(s) Std Std Std Std Std Std• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Stainless Steel Casing Std Std Std Std Std Std• R-22 Type Refrigerant Std Std Std Std Std Std• Other Refrigerants -----------------------------------Consult Factory----------------------------------• Thermostatic Expansion Valve Opt Opt Opt Opt Opt Opt

• Remote Air Cooled Condensing Unit Opt Opt Opt Opt Opt Opt

Post Cool Module Chilled Water Cooled

• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• 3-Way Mixing Valve with Electric Actuator Opt Opt Opt Opt Opt Opt

DX Cooled• Split interlaced, Dual Distributor Coil(s) Std Std Std Std Std Std• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• R-22 Type Refrigerant Std Std Std Std Std Std• Other Refrigerants -----------------------------------Consult Factory----------------------------------• Thermostatic Expansion Valve Opt Opt Opt Opt Opt Opt• Remote Air Cooled Condensing Unit Opt Opt Opt Opt Opt Opt

Pre-Heat Module - (Standard Module Width is 24”)

• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt OptElectric• Nichrome wire Element(s) Std Std Std Std Std Std• Solid State Proportional Control Std Std Std Std Std Std• High Temperature Cut Out Std Std Std Std Std Std• Air Proving Switch Std Std Std Std Std StdSteam• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• 2-Way Valve with Electric Actuator Opt Opt Opt Opt Opt OptHot Water• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• 3-Way Mixing Valve with Electric Actuator Opt Opt Opt Opt Opt Opt


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“DHP” Model -2750-107 -4250-107 -5500-107 -3750-122 -5500-122 -7250-122


Pre-Cool Module Chilled Water Cooled

• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Stainless Steel Casing Std Std Std Std Std Std• 3-Way Mixing Valve with Electric Actuator Opt Opt Opt Opt Opt Opt

DX Cooled• Split interlaced, Dual Distributer Coil(s) Std Std Std Std Std Std• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Stainless Steel Casing Std Std Std Std Std Std• R-22 Type Refrigerant Std Std Std Std Std Std• Other Refrigerants -----------------------------------Consult Factory----------------------------------• Thermostatic Expansion Valve Opt Opt Opt Opt Opt Opt

• Remote Air Cooled Condensing Unit Opt Opt Opt Opt Opt Opt

Post Cool Module Chilled Water Cooled

• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• 3-Way Mixing Valve with Electric Actuator Opt Opt Opt Opt Opt Opt

DX Cooled• Split interlaced, Dual Distributor Coil(s) Std Std Std Std Std Std• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• R-22 Type Refrigerant Std Std Std Std Std Std• Other Refrigerants -----------------------------------Consult Factory----------------------------------• Thermostatic Expansion Valve Opt Opt Opt Opt Opt Opt• Remote Air Cooled Condensing Unit Opt Opt Opt Opt Opt Opt

Pre-Heat Module - (Standard Module Width is 24”)

• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt OptElectric• Nichrome wire Element(s) Std Std Std Std Std Std• Solid State Proportional Control Std Std Std Std Std Std• High Temperature Cut Out Std Std Std Std Std Std• Air Proving Switch Std Std Std Std Std StdSteam• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• 2-Way Valve with Electronic Actuator Opt Opt Opt Opt Opt OptHot Water• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• 3-Way Mixing Valve with Electric Actuator Opt Opt Opt Opt Opt Opt


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“DHP” Model -750-55 -1150-55 -1500-55 -1500-77 -2250-77 -3000-77


Post Heat Module - (Standard Module Width is 24”)

• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt

Electric• Nichrome wire Element(s) Std Std Std Std Std Std• Solid State Proportional Control Std Std Std Std Std Std• Air Proving Switch Std Std Std Std Std StdSteam• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• 2-Way Valve with Electronic Actuator Opt Opt Opt Opt Opt OptHot Water• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• 3-Way Mixing Valve with Electric Actuator Opt Opt Opt Opt Opt Opt

Process Blower Module• Spring Isolated Blower Std Std Std Std Std Std• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt

Cabinet Construction - All Aluminum Construction

• Outdoor Rated Std Std Std Std Std Std• Structural Rail Mounting Std Std Std Std Std Std• Single Wall Construction Std Std Std Std Std Std• Double Wall Construction with 2” Insulation Opt Opt Opt Opt Opt Opt• Left Side Process Air Outlet Std Std Std Std Std Std• Right Side Process Air Outlet Opt Opt Opt Opt Opt Opt• Interior Lights and Convenience Outlet Opt Opt Opt Opt Opt Opt

Process Air Inlet• Flanged Std Std Std Std Std Std• Weather Hood with Screen Opt Opt Opt Opt Opt Opt

Process Air Outlet• Flanged Std Std Std Std Std Std• Manual Damper with Locking Handle Opt Opt Opt Opt Opt Opt

Reactivation Air Inlet• Flanged Std Std Std Std Std Std• Weather Hood with Screen Opt Opt Opt Opt Opt Opt

Reactivation Air Outlet• Flanged Std Std Std Std Std Std• Manual Damper with Locking Handle Std Std Std Std Std Std• Weather Hood with Screen Opt Opt Opt Opt Opt Opt

Paint- Industrial/ Marine, High Gloss• Pewter Std Std Std Std Std Std

• Other -----------------------------------Consult Factory----------------------------------

3-5



“DHP” Model -2750-107 -4250-107 -5500-107 -3750-122 -5500-122 -7250-122


Post Heat Module - (Standard Module Width is 24”)

• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt

Electric• Nichrome wire Element(s) Std Std Std Std Std Std• Solid State Proportional Control Std Std Std Std Std Std• Air Proving Switch Std Std Std Std Std StdSteam• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• 2-Way Valve with Electronic Actuator Opt Opt Opt Opt Opt OptHot Water• Copper Tube/Aluminum Fin Coil(s) Std Std Std Std Std Std• Galvanized Steel Casing Std Std Std Std Std Std• 3-Way Mixing Valve with Electric Actuator Opt Opt Opt Opt Opt Opt

Process Blower Module• Spring Isolated Blower Std Std Std Std Std Std• Access Door with Stainless Steel Hinge Std Std Std Std Std Std• Access Door Viewing Window Opt Opt Opt Opt Opt Opt

Cabinet Construction - All Aluminum Construction

• Outdoor Rated Std Std Std Std Std Std• Structural Rail Mounting Std Std Std Std Std Std• Single Wall Construction Std Std Std Std Std Std• Double Wall Construction with 2” Insulation Opt Opt Opt Opt Opt Opt• Left Side Process Air Outlet Std Std Std Std Std Std• Right Side Process Air Outlet Opt Opt Opt Opt Opt Opt• Interior Lights and Convenience Outlet Opt Opt Opt Opt Opt Opt

Process Air Inlet• Flanged Std Std Std Std Std Std• Weather Hood with Screen Opt Opt Opt Opt Opt Opt

Process Air Outlet• Flanged Std Std Std Std Std Std• Manual Damper with Locking Handle Opt Opt Opt Opt Opt Opt

Reactivation Air Inlet• Flanged Std Std Std Std Std Std• Weather Hood with Screen Opt Opt Opt Opt Opt Opt

Reactivation Air Outlet• Flanged Std Std Std Std Std Std• Manual Damper with Locking Handle Std Std Std Std Std Std• Weather Hood with Screen Opt Opt Opt Opt Opt Opt

Paint- Industrial/ Marine, High Gloss• Pewter Std Std Std Std Std Std

• Other -----------------------------------Consult Factory----------------------------------

3-6



“DHP” Model -750-55 -1150-55 -1500-55 -1500-77 -2250-77 -3000-77


Power• 460/3/60 Std Std Std Std Std Std• (230/208)/3/60 Opt Opt Opt Opt (1) Opt (1) Opt (1)• 575/3/60 Opt Opt Opt Opt Opt Opt

(1) Provided Only with Gas and Steam Reactivation Units

Disconnects• None Std Std Std Std Std Std• Knife, Non-fused, NEMA-3R Opt Opt Opt Opt Opt Opt• Knife, Fused, NEMA-3R Opt Opt Opt Opt Opt Opt• Rotary Switch, Cabinet Mounted Opt Opt Opt Opt Opt Opt• Circuit Breaker, Cabinet Mounted Opt Opt Opt Opt Opt Opt

Safety• Overheat Protection Std (2) Std (2) Std (2) Std (2) Std (2) Std (2)• Reactivation Air Proving Std (2) Std (2) Std (2) Std (2) Std (2) Std (2)• Emergency Stop Opt Opt Opt Opt Opt Opt• Voltage/Phase Monitor Opt Opt Opt Opt Opt Opt

(2) Provided Only with Electric and Gas Reactivation Units

Capacity Control MethodD-Stat II• Duct Mounted Control Sensor Provision Opt Opt Opt Opt Opt Opt• Wall Mounted Control Sensor Provision Opt Opt Opt Opt Opt OptH-Trac• Duct Mounted Control Sensor Provision Opt Opt Opt Opt Opt Opt• Wall Mounted Control Sensor Provision Opt Opt Opt Opt Opt OptDew-Trac• Duct Mounted Control Sensor Provision Opt Opt Opt Opt Opt Opt• Wall Mounted Control Sensor Provision Opt Opt Opt Opt Opt OptC-Trol II• Control Sensor Provision Opt Opt Opt Opt Opt Opt

Status Monitoring Indicator Lights• Power On (White) Std Std Std Std Std Std• Unit On (Green) Std Std Std Std Std Std• Motor Fault (Red) Opt (3) Opt (3) Opt (3) Opt (3) Opt (3) Opt (3)• Rotor Rotation Fault (Red) Opt Opt Opt Opt Opt Opt• High Reactivation Temp (Red) Std (2) Std (2) Std (2) Std (2) Std (2) Std (2)• Air/Gas Fault (Red) Std (1) Std (1) Std (1) Std (1) Std (1) Std (1)• Burner Fault (Red) Std (1) Std (1) Std (1) Std (1) Std (1) Std (1)

(1) Provided Only With Gas Reactivation Units; (2) Provided Only With Electric & Gas Reactivation Units;

(3) Provided As Standard On Steam Reactivation Units Only

Customer Interface Terminals• Process Blower Interlock Dry Contact Std Std Std Std Std Std• Remote Start/Stop Contact Std Std Std Std Std Std• Summary Fault Dry Contact Opt Opt Opt Opt Opt Opt• Process/Reactivation Dirty Filters Dry Contact Opt Opt Opt Opt Opt Opt• Process Air Proving Dry Contact Opt Opt Opt Opt Opt Opt• Reactivation Air Proving Dry Contact Opt Opt Opt Opt Opt Opt

3-7



“DHP” Model -2750-107 -4250-107 -5500-107 -3750-122 -5500-122 -7250-122


Power• 460/3/60 Std Std Std Std Std Std• (230/208)/3/60 Opt (1) Opt (1) Opt (1) Opt (1) Opt (1) Opt (1)• 575/3/60 Opt Opt Opt Opt Opt Opt

(1) Provided Only with Gas and Steam Reactivation Units

Disconnects• None Std Std Std Std Std Std• Knife, Non-fused, NEMA-3R Opt Opt Opt Opt Opt Opt• Knife, Fused, NEMA-3R Opt Opt Opt Opt Opt Opt• Rotary Switch, Cabinet Mounted Opt Opt Opt Opt Opt Opt• Circuit Breaker, Cabinet Mounted Opt Opt Opt Opt Opt Opt

Safety• Overheat Protection Std (2) Std (2) Std (2) Std (2) Std (2) Std (2)• Reactivation Air Proving Std (2) Std (2) Std (2) Std (2) Std (2) Std (2)• Emergency Stop Opt Opt Opt Opt Opt Opt• Voltage/Phase Monitor Opt Opt Opt Opt Opt Opt

(2) Provided Only with Electric and Gas Reactivation Units

Capacity Control MethodD-Stat II• Duct Mounted Control Sensor Provision Opt Opt Opt Opt Opt Opt• Wall Mounted Control Sensor Provision Opt Opt Opt Opt Opt OptH-Trac• Duct Mounted Control Sensor Provision Opt Opt Opt Opt Opt Opt• Wall Mounted Control Sensor Provision Opt Opt Opt Opt Opt OptDew-Trac• Duct Mounted Control Sensor Provision Opt Opt Opt Opt Opt Opt• Wall Mounted Control Sensor Provision Opt Opt Opt Opt Opt OptC-Trol II• Control Sensor Provision Opt Opt Opt Opt Opt Opt

Status Monitoring Indicator Lights• Power On (White) Std Std Std Std Std Std• Unit On (Green) Std Std Std Std Std Std• Motor Fault (Red) Opt (3) Opt (3) Opt (3) Opt (3) Opt (3) Opt (3)• Rotor Rotation Fault (Red) Opt Opt Opt Opt Opt Opt• High Reactivation Temp (Red) Std (2) Std (2) Std (2) Std (2) Std (2) Std (2)• Air/Gas Fault (Red) Std (1) Std (1) Std (1) Std (1) Std (1) Std (1)• Burner Fault (Red) Std (1) Std (1) Std (1) Std (1) Std (1) Std (1)

(1) Provided Only With Gas Reactivation Units; (2) Provided Only With Electric & Gas Reactivation Units;

(3) Provided As Standard On Steam Reactivation Units Only

Customer Interface Terminals• Process Blower Interlock Dry Contact Std Std Std Std Std Std• Remote Start/Stop Contact Std Std Std Std Std Std• Summary Fault Dry Contact Opt Opt Opt Opt Opt Opt• Process/Reactivation Dirty Filters Dry Contact Opt Opt Opt Opt Opt Opt• Process Air Proving Dry Contact Opt Opt Opt Opt Opt Opt• Reactivation Air Proving Dry Contact Opt Opt Opt Opt Opt Opt

3-8


Desiccant Rotor

The desiccant rotor shall consist ofa high temperature, corrugated,synthetic fiber substrate media witha non-migrating, water selectivesilica gel desiccant uniformly andpermanently encapsulated in thematrix structure of the media. Thesilica gel desiccant shall haveuniform macro-pore openings.The high performance silica geldesiccant shall remove watervapor from the passing airstreamat the rate specified in the sched-ule. Nominal face velocity shall notexceed 800 fpm. The silica gelshall be bonded to the substrate insuch a way that the entire rotorsurface shall be active as a desic-cant. The desiccant shall not beloose within the rotor. Rotors withgranular or coated desiccants shallnot be acceptable. Dehumidifiersrequiring either “topping off” or re-impregnation of the desiccant shallnot be acceptable.

The rotor shall be an extendedsurface contactor with a plurality ofparallel flutes and have laminar airflow characteristics. The rotor shallbe manufactured by windingcontinuous, alternating layers ofcorrugated and flat sheets to forma strong fluted shaped rotor. Therotor shall be fabricated to includemechanical support of the mediaand shall have an external sheetmetal wrapper to encase the

moisture removal at an enteringair temperature condition of ___°F DB / ___ °F WB, ___°F DewPoint (___ % RH).

The DHP unit shall be of similardesign and construction asproven in previous applications bya minimum of ten years operatingexperience. All system compo-nents except the desiccant rotorshall have provisional warrantycoverage for a period of 2 yearsafter installation. The rotor shallbe warranted for a period of 5years against softening or col-lapse due to exposure to humidair.

The dehumidification systemmanufacturer shall be an ISO-9001 registered company. Thesystem shall be a model DHP-_________ DESICAiR dehumidifi-er as manufactured by Stulz AirTechnology Systems, Inc. (SATS)in Frederick, Maryland, USA.

DesiccantDehumidification

The dehumidifier shall be of thenon-cycling type with dry non-granular, non-deliquescent, non-corrosive, non-toxic silica geldesiccant. The unit shall providefor continuous dehumidificationwith concurrent reactivation of thedesiccant. The blower arrange-ment shall provide counter flow ofthe process and reactivation airstreams.

The dehumidification processshall be by adsorption. Absorp-tion type desiccants such aslithium chloride or other salt typesorption materials which require achange in state for the dehumidifi-cation process shall not be ac-ceptable.

General Description

The dehumidification system shallbe a desiccant dehumidifier de-signed to provide precision humidi-ty control to a space or processapplication. The dehumidifier andoptions selected shall be factoryassembled, tested and shippedcomplete with all components asdescribed here-in to maintain thespecified humidity level within theintended space or to maintain thedischarge outlet within the designload limits of this project. Thedehumidifier shall include a highperformance silica gel desiccantrotor, process air blower, reactiva-tion air blower, reactivation heater,positive drive rotor drive systemand all necessary controls forcontinuous and safe unattendedoperation.

The system cabinet shall bedesigned for outdoor installationand year round service. Thesystem shall require only connec-tion of ductwork, utilities, remotesensors and/or control signalsunless shipping splits are indicat-ed.

At a process air flow rate of______ SCFM, the system shallprovide ___ lb/hr (___ Gr/lb)

GENERAL GUIDESPECIFICATIONS

QUALITY ASSURANCE(ISO 9001:2001 Registered)SATS operates in an ISO 9001registered quality control envi-ronment. Each SATS employeeis committed to satisfying his orher customer expectations withthe highest level of consistent,measurable and continuousquality improvement.

4-1

Guide Specifications - Standard Equipment

Guide Specifications - Standard Equipm

ent

Removal of the rotor shall not berequired to replace the drive beltor seals.

A motor starter shall be providedand wired by the manufacturer.The rotation shall be continuous.Intermittent operation or indexingshall not be permitted.

The rotor shall be shaft supportedby ball bearings for long life andlow maintenance. Ball bearingsshall be sized to support the rotorat full saturated weight withoutinducing stress on the rotor’s outerwrapper or flutes. The dehumidifi-cation rotor shall not be mountedon casters or rollers.

Rotor Pressure Drop

Gauges:Pressure indication gauges shallbe provided to indicate the pres-sure drop across the rotor. Sepa-rate gauges and static pressuretips shall be installed for processand reactivation air streams.

The gauges shall be externallymounted on the cabinet. Thegauges shall be suitable for eitherindoor or outdoor service andhave 4-1/2" face and analog dial.The scale shall be selected suchthat the design pressure indicationis within the mid-range of thegauge. The DHP unit manufactur-er shall provide a Technical DataSheet which shall state the expect-ed pressure drop for each airstream. The Technical Data Sheetshall be included with the Opera-tions & Maintenance manualprovided with each unit.

Rotor Air Seals

The process and reactivationsectors shall be provided with airseals to prevent cross leakage.The seals shall prevent leakagefrom one air stream to the other.

A seal shall be installed against aflange mounted on the peripheryof the rotor to prevent air from by-passing the rotor. Seals shall bemounted on both the entering andleaving face of the rotor. Balloonor bulb type seals are not accept-able.

Seals shall provide minimumleakage up to 8” w.c. pressuredifferential.

Blowers/Motors

Process Blower:The process air blower shall becentrifugal type with a continuouswelded housing, unless otherwisespecified. The blower shall besized for the air requirements andstatic pressure as indicated in thesubmittal.

Belt driven blowers shall include aminimum of two drive belts. Anadjustable sheave shall be provid-ed for two belt drives and it shallbe selected such that the operat-ing rpm does not exceed 90% ofthe blower maximum speed.Process air blowers shall bemounted on nominal 2” deflection,spring vibration isolators. Theprocess blower housing and shaftshall be sealed to prevent moistureinfiltration into the dehumidificationsystem. The blower motor shall beTEFC. An IEC style motor starterwith branch circuit protection shallbe included and wired at thefactory.

media. The rotor shall be 200 mmthick in the direction of airflow tominimize airflow pressure drop.Dehumidifiers requiring either“topping off” or re-impregnationare not acceptable.

The desiccant rotor shall not beadversely affected by exposure toair even at 100% relative humidityor to prolonged storage or intermit-tent use in humid atmospheres.The desiccant dehumidificationrotor shall be capable of sustainedoperation with either the processor the reactivation blower operat-ing without reactivation heatapplied.

The rotor shall be able to becleaned with either warm water ordetergent wash without damage orloss of desiccant. The desiccantshall retain a minimum of 95% ofits working capacity after ten yearscontinuous service with propermaintenance and care.

The rotational speed shall bedesigned for the maximum dehu-midification effectiveness per themanufacturer’s performance dataand to prevent wave front breakthrough at design conditions. Thedesiccant rotor shall be shaftsupported with ball bearings

Rotor Drive

The desiccant rotor shall be beltdriven from a fractional horsepow-er gear motor. The rotor drivesystem shall be provided with allthe necessary components forcontinuous slip free operation.The drive system shall consist of afixed speed motor, speed reducerand a reinforced flexible drive beltand belt tensioner. The speedreducer shall have lifetime lubrica-tion and not require field or period-ical maintenance lubrication.

4-2



ent

with the reactivation heater toprevent the heater from energizingin the event of loss of air flow.

Natural Gas:Direct fired natural gas reactivationheaters shall include all the neces-sary controls to detect, monitorand regulate the gas flame andreactivation temperature as re-quired. Automatic modulation ofthe gas supply shall be included bythe dehumidifier manufacturer.Gas supply pressure shall rangefrom a minimum of 10” w.c. to amaximum of 14” w.c.

Controls shall include an airproving switch which is wired in theheater control circuit to prevent theheater from operating in the eventof reactivation air flow loss. TheDHP unit heater controller shalllimit the reactivation temperatureas well as regulate the reactivationoutlet temperature. The pilot flameshall be adjusted and set indepen-dent of the main gas flame. Sepa-rate gas pressure regulator valvesshall be provided for the pilot andmain gas line. A spark ignitionsystem and a listed flame safetyrelay shall be utilized. Both highgas and low gas pressure cut-outsshall be provided.

The gas components and controlsshall be in accordance with NFPAguidelines. Compliance to localcodes for venting or other installa-tion regulations is the responsibilityof the installing contractor.

Steam Reactivation:Steam reactivation coils shall behoused in an insulated enclosureto ensure maximum thermal trans-fer to the reactivation air streamand to comply with OSHA regula-tions concerning personnel safetyprotection from hot surfaces.

Steam reactivation coils shall bethe non-freeze steam distributing

housed in an insulated enclosureto minimize heat loss and toprevent incidental contact with hotsurfaces by operating or servicepersonnel.

Electric:Electric heaters shall include ahigh temperature cut out. Thesensor shall be located betweenthe heater section and the rotorinlet. A summary fault light locatedon the operator’s panel shall beilluminated in the event of anoverheat occurrence. A manualreset shall be required in order toprevent attempted repeatedoperation by automatic resettingdevices in a fault condition.

Electric heaters shall be stagednot to exceed 48 amps per branchand circuit protection shall not begreater than 60 amps in accor-dance with the National ElectricCode.

Electric heaters shall be open Ni-chrome wire elements with awattage density of less than 35watt/in2 of heater element crosssectional area. Heater elementsshall be mounted in 304 stainlesssteel frames and have ceramicinsulators. Heater wire runningfrom the heater contactor to theheater terminal box shall be ratedfor 200oC service.

Electric heaters shall be controlledby an adjustable solid state pro-portional control system designedto prevent overheating and toprovide energy conservation. Acool down purge shall be incorpo-rated to operate the reactivationblower for a minimum of 5 minuteswhenever the heater is de-ener-gized by the controls.

An air proving switch shall beinstalled in the reactivation airstream and connected in series

Process Blower Motor:The process blower/motor assem-bly shall be sized to provide______ CFM @ ______ inchesstatic pressure.

Reactivation Blower:

The reactivation air blower shall bea direct drive centrifugal type witha welded housing. The blower shallbe sized for the air volume andexternal static pressure as indicat-ed in the submittal. The blowermotor shall be TEFC. An IEC stylemotor starter with branch circuitprotection shall be included andwired at the factory.

Reactivation Blower Motor:The reactivation heater blower/motor assembly shall be sized toprovide ______ CFM @ ______inches static pressure.

Reactivation Heater

The reactivation heat source shallbe electric, steam or direct firednatural gas as specified on theschedule. The reactivation heatshall be of sufficient capacity toensure the complete and continu-ous reactivation of the desiccantduring summer or winter operationof the dehumidifier.

The reactivation heater shall beselected to satisfy the summer andwinter performance requirementsper the schedule and shall becompletely factory assembled.The reactivation heater shall be

4-3



ent

Access Doors:

Hinged access doors shall beprovided on at least one side ofthe cabinet in order to allowservice of all major internal com-ponents. A minimum of two latches,operable from either inside oroutside, are included per accessdoor. Access door handles shallbe tool operated, non-lockingtype. Latching systems shall bethe roller cam type for smoothoperation, less friction to doorseal, and increase ramp-up toallow for more seal compression.Hinge shall be stainless steel typepiano hinge.

Access doors are available with anoptional 8” x 8” clear viewingwindow. See Optional FeaturesGuide Specifications.

Test Ports:

Probe style test ports shall beprovided as standard. Ports shallbe located to allow for the mea-surement of temperature andhumidity both upstream anddownstream of air “conditioning”components including the desic-cant rotor, cooling and/or heatingcoils, and/or humidifier. A singleport shall be mounted to allow forair temperature measurementbetween the reactivation heaterand rotor.

type with NPT pipe connections,0.049" thick copper tubes, 0.0075aluminum fins with maximum 12fins per inch, copper header,galvanized casing. Coils shall bepressured tested to 300 psig andrated for 150 psig maximumoperating pressure. Face velocityshall not exceed 800 fpm.

Coil connections shall be stubbedout through the reactivationcabinet. A bulkhead seal shall beused to seal the pipe penetration.Steam fittings and piping shall beprovided and installed by others.

The reactivation leaving tempera-ture shall be automatically main-tained at setpoint by modulatingthe reactivation inlet damper tovary the reactivation air volume.The damper shall be a low leakagetype with high temperature siliconeedge seals, stainless steel bush-ings and a solid state controlleddirect shaft mounted actuator.

Cabinet Construction

The DHP unit cabinet shall beconstructed of formed 0.125" thick5052 grade aluminum for corrosionprotection. The cabinet modulesshall be of formed sections, weld-ed, sealed and painted. Modulesare welded and sealed together ona unitized skid. Unit air leakageshall be less than 1% of designairflow rate measured at 8” w.c.negative static pressure. The DHPmanufacturer shall provideplugged floor drains in eachsection of the process air side ofthe unit.

Double wall, insulated cabinets areavailable. See Optional FeaturesGuide Specifications.

Paint:The cabinet shall be painted with adurable high gloss protectivecoating. The coating shall bepewter in color and shall beweather and chemical resistant.The coating shall be applied toprovide a finish with a minimum dryfilm thickness of 3 mils.

Skid

The dehumidifier shall include askid adequate to support the fulloperating weight of the unit and toallow for rigging, transportationand handling at the job site as wellas leveling at installation. Liftingpoints shall be provided to assistin loading and placing the DHPunit at the job site. Non-conductinggalvanic isolation is requiredbetween dissimilar materials of theskid and cabinet.

Air Connections

All air connections shall be squareor rectangular with turned outinterface flanges. Flanges shall beblank for match drilling in the fieldby the installing contractor.

Protective weather hoods orlouvers for outdoor air connectionsare available. See Optional Fea-tures Guide Specifications.

4-4



ent


4-5

Dampers

A manually adjustable balancingdamper shall be provided on thereactivation blower outlet and ondirect drive process blowers toallow for setting the air flow vol-ume. The damper shall be mount-ed on a steel shaft with a bronzebushing. A locking arm with apositive locking mechanism shallbe provided.

Proper flow shall be determined bysetting the static pressure dropsacross the desiccant rotor to apre-determined value as shown onstatic pressure gauges. A Techni-cal Data Sheet which includes thespecified pressure drops for eachair stream shall be included by themanufacturer with the InstallationOperation & Maintenance manualfurnished with the unit.

Filters

Process Inlet Filter:The process air inlet shall have 2inch thick, pleated disposablefilters rated at a minimum of 30%efficiency per ASHRAE Standard52-76.

Reactivation Inlet Filter:The reactivation air inlet shall have2 inch thick, pleated disposablefilters rated at a minimum of 30%efficiency per ASHRAE Standard52-76.

Controls

In the AUTO mode all componentsshall operate automatically andcontinuously as described in ONmode below. Also, the unit ispermitted to be enabled anddisabled remotely. In the OFFmode all motors, drives andheaters shall be de-energized.Upon shut down of thedehumidifier, the process blowerand reactivation heater shall bede-energized; for electric and gas-fired reactivated units, the rotordrive and reactivation blower shallcontinue to operate during a cooldown cycle to remove residualheat from the rotor andreactivation sector.

In the ON mode the dehumidifiershall be controlled by (specify oneof the following):

D-Stat II™:The dehumidifier control shallcompare the conditioned spacehumidity to the humidity setpoint.The process air blower will remainoperating while the reactivationcomponents cycle off in responseto the measured humidity.

H-Trac™:The reactivation heater shallrespond to a proportional controlsignal from the unit controller tomodulate the dehumidifier capac-ity. The H-Trac control shallautomatically regulate the reacti-vation heater to provide a con-stant relative humidity of either theprocess air or “space” condition.The controller shall proportionallyregulate the reactivation heater tomaintain the set point value. Faceand by-pass dampers shall not beused for capacity modulation.

Dew-Trac™:The temperature and humidity ofthe conditioned air or space ismeasured and the correspondingdewpoint is calculated by the DHPunit controller. The Dew-Traccontrol shall automatically regulatethe reactivation heater to providea constant dew point temperatureof either the process air or spacecondition.The controller shall proportionallyregulate the reactivation heater tomaintain the set point value. Faceand by-pass dampers shall not beused for capacity modulation.

C-Trol II™:The reactivation heater shallrespond to a control signal fromthe unit controller which comparesa cold surface temperature toambient dew point temperature.The C-Trol control shall automati-cally regulate the reactivationheater to prevent condensationfrom forming on cold surfaces. Theprocess air blower runs continu-ously in the AUTO mode to providea circulating air current within thespace.

System Controller

The unit shall be controlled by astand alone controller. The con-troller shall be configurable tomeet the specific application. TheDHP unit controller shall be mount-ed in a NEMA 4 enclosure.

DHP unit controllers are capableof remote communications viaavailable options. See OptionalFeatures Guide Specifications.


ent

Electrical Components& WiringPractice

Wiring practices, branch circuitprotection, motor starters andoverload protection shall be inaccordance with the NationalElectric Code. IEC style motorcontactors equipped with motorcircuit controllers, and auxiliarycontacts shall be provided.

Status indicator lights are mountedon the electrical enclosure frontpanel. Lights are LED with anexpected life of up to 50,000hours. Power On and Fault lightsare provided as a minimum.Indicator lights, other than PowerOn, have a “press-to-test” featureto verify functionality

All controls components shall bemounted in a NEMA 4 UL listedelectrical control enclosure. Aground lug connection shall beprovided in the electrical enclo-sure. The main control panel shallbe UL508A listed.

All wiring shall be run in flexibleliquid tight conduit. Wires shall benumbered at both ends. The wireharness shall be neatly arrangedand tie wrapped.

Pre-/Post Cooling Coils

Cooling coils shall be housed ininsulated sections. Coils shall beaccessed through the modulesbefore and after the cooling coilmodules and shall be removablethrough assembly panels.

Coils shall be provided with insu-lated 304 stainless steel drainpans extending at least 12 inchesdownstream of the coil. The panshall be sloped in the direction ofair flow for positive drainage. Theface velocity of wet surface coolingcoils shall not exceed 500 fpm.

The face velocity of dry surfacecooling coils shall not exceed 600fpm.

All coils including dry surface coilsshall be provided with a drain panto assist moisture removal at start-up and during operation. Conden-sate drains for wet surface coilsshall be provided with factorydrains lines which shall be ex-tended through the cabinet forfield connection of traps andadditional drain lines. Condensatedrains for dry surface coils shallbe extended through the cabinetand provided with a factory in-stalled removable threaded cap.

Chilled Water CoilsChilled water cooling coil supplyand return connections shall beexternal of the cabinet.

Pre-Cooling:Pre-cooling coils for chilled wateror glycol service shall have amaximum of 10 fins per inch,0.075" thick aluminum fins, .025"thick copper tubes, copper head-ers and stainless steel casings.

Post Cooling:Post cooling coils for chilled wateror glycol service shall have amaximum of 12 fins per inch,0.075" thick aluminum fins, 0.025"thick copper tubes, copper head-ers and galvanized steel casings.

DX Type CoilsDX type cooling coil connectionsshall be internal of the cabinet.

Pre-Cooling:Pre-cooling evaporator coils forDX refrigerant type R-22 serviceshall have a maximum of 10 finsper inch. Coil circuiting shall besplit interlaced with two distribu-tors.

Post Cooling:Post cooling evaporator coils forDX refrigerant type R-22 service

shall have a maximum of 12 finsper inch. Coil circuiting shall besplit interlaced with two distribu-tors.

Pre-/Post Heating

Pre-/post heating coils are provid-ed in 24” wide cabinets.

Electric HeatersElectric heaters shall include ahigh temperature cut out. Thesensor shall be located in theheater section. A fault shall besignaled in the event of an over-heat occurrence. A manual resetshall be required in order toprevent attempted repeatedoperation by automatic resettingdevices in a fault condition.

Electric heaters shall be stagednot to exceed 48 amps per branchand circuit protection shall not begreater than 60 amps in accor-dance with the National ElectricCode. Electric heaters shall beopen Ni-chrome wire elements witha watt density of less than 35 watt/in2 of heater element cross sec-tional area. Heater elements shallbe mounted in 304 stainless steelframes and have ceramic insula-tors. Heater wire running to theheater terminal box shall beinsulated and shall be rated for200oC. service. Electric heatersshall be controlled by an adjust-able solid state proportionalcontrol system. The pressure dropaccross the electric pre-/postheating coils is approximately 0.1”w.c.

Steam CoilsSteam heating coils shall be thenon-freeze steam distributing typewith NPT steel pipe connectionsbrazed to copper headers, 0.049"thick copper tubes, 0.075 alumi-num fins with maximum 12 fins perinch, copper header, galvanizedcasing. Coils shall be pressured


4-6


ent

tested to 300 psig and rated for150 psig maximum operatingpressure. Face velocity shall notexceed 800 fpm. Coil connectionsshall be stubbed out through thecabinet. A bulkhead seal shall beused to seal the pipe penetration.

Steam fittings, piping, and insula-tion shall be provided by theinstalling contractor in accordancewith the schedule. The pressuredrop across the steam pre-/postheating coils is approximately 0.2”w.c.

Hot Water CoilsHot water heating coils for water orglycol service shall have a maxi-mum of 12 fins per inch, 0.075"thick aluminum fins, 0.025" thickcopper tubes, copper headers andgalvanized steel casings. Coilsupply and return connectionsshall be external of the cabinet. Abulkhead seal shall be used toseal the pipe penetration.

Valves, fittings, piping, and insula-tion shall be provided by theinstalling contractor in accordancewith the schedule. The pressuredrop across the electric pre-/postheating coils is approximately 0.5”w.c.

Dry Handler Plus(Model DHP-1500-55-E Shown with Optional, Self Contained Condensing Unit)

4-7


Power Supply

The power service provided by theowner shall be:

460/3/60

Other operating voltages andfrequencies are available. Foroptional voltage operation, pleasecontact SATS.

Warranty

The dehumidifier shall include aconditional, limited parts warrantyfor 24 months from the date ofshipment for mechanical andelectrical components when acompleted start-up form, providedby the manufacturer, is returned bythe owner. The warranty shallinclude repair or replacement ofparts which may be defective ineither material or workmanship.(Some restrictions may apply.)

The desiccant rotor shall be cov-ered by a 60 month limited warran-ty against softening or collapse dueto exposure to even 100% humidair. The rotor warranty shall beincluded at no additional expenseand shall commence from the dateof shipment.

Submittal Data

The dehumidifier manufacturershall submit _______ sets ofdrawings and technical data forapproval by the Engineer.The data shall consist of:1. Installation diagram includingoutline dimensions of the unit andutility connection locations.2. Component layout diagramshowing the location of all majorcomponents.3. Electrical diagram showingpoint-to-point wire connections.4. Technical data sheet showingthe performance characteristics ofthe unit including moisture remov-al rate, air pressure loss throughthe rotor and energy consumptionas a minimum.5. Air flow diagram showingthermodynamic and psychrometricvalues at each station.

Approved Manufacturer

The dehumidifier manufacturermust have a minimum of 15 yearsof industry experience. Thedehumidifier shall be DESICAiRDHP Series as manufactured byStulz Air Technology Systems, Inc.Frederick, Maryland.


ent

4-8

Advanced MicroprocessorHumidity & Dewpoint

Controller with Alarms

The Dry Handler Plus desiccantdehumidification system shall beprovided with SATS’ D-Tech-20advanced humidity and dewpointmicroprocessor controller. Thecontroller incorporates a “user-friendly”operating environment to allow easysystem setup and operation.

Display / Keypad

The D-Tech-20 shall require only sixoperation buttons to navigate andcontrol the system and features aneasy to read, built-in 4 X 20 characterLCD; not to mention the option to adda remote wall-mounted keypad/display. A scrolling menu shall allowan operator to effortlessly select unitfunctions for viewing and customizing;as well as password protection onthose levels that configure the unit.

Display/Sensor Options

Display Location Options:The D-Tech-20 user-interface display/keypad shall be factory unit mountedin a weather-resistance enclosure.

Temp/Humid Sensor Options:The D-Tech-20 control system shallinclude the following factory providedtemperature and humidity sensors:

Factory Installed Sensors:• Reactivation Temperature

Probes: Qty. 2(two) PT1000

• Process Inlet Temperature &Humidity Sensor: Qty. 1(one)±3% 4-20mA , (see note-1)

• Pre-Rotor Temperature Sensor:1 (one) ±3% 4-20mA pre-rotortemperature sensor, (See Note 1)

Field Installed Sensors:• Process Outlet Temperature &

Humidity Sensor Qty. 1(one) ±3%4-20mA process temperature/humidity sensor, (See Note 1)

(Note 1: Dependent on unit configura-tion options selected.

Optional Sensors:• Optional Process Air Outlet

Temperature & Humidity Sensor:Qty. 1(one) ±2% 4-20mAprocess temperature/humiditysensor.

• Optional Process Air OutletTemperature & Humidity Sensor:Qty. 1(one) ±1% 4-20mA.

System Setup & Adjustments

The D-Tech-20 shall be completelyfactory pre-programmed via flash-memory, and therefore, most applica-tions shall not require field setup. The“default” setpoints and user parame-ters shall be field adjustable.

The system shall include the followingMAIN MENU selections for theoperator:

• SYSTEM STATUS DATA:Provides real-time informationabout the system’s current modeand operation.

• MOTOR RUN TIMES:Provides unit & component run-times.

• SETPOINTS/TUNING:Supplies operator with the unit’sadjustable control parameters (i.e.setpoints, proportional bands,integral bands, differentials).

• CALIBRATE READINGS:Allows operator to calibratesensor readings.

• PROGRAM CONTROLLER:Supplies operator adjustable userparameters such as: Passwordmodification, SUMMARY ALARMassociation, Clearing the ALARM

LOG, SCREENSAVER MODEtimeout, Input/Output statuses, &an EVENT LOG.

• ALARM LOG:Provides a history of the last 25alarms that occurred on the unit.

• SET DATE/TIME:Allows the date & time to bechanged.

• INFORMATION ABOUT:Provides information on how tocontact SATS.

System Status Data(Systems Information Only)

The D-Tech-20 shall display currentunit operational functions and airtemperature & humidity conditions:

System Status: (if applicable)• Local-On, Remote-On, Alarm• Actual Dewpoint & Dewpoint

Setpoint (if applicable)• Actual Humidity & Humidity

Setpoint• Process Temperature• Process Inlet Temperature &

Humidity• Process Inlet Enthalpy &

Capacity Percentage• Actual Pre-Cool/Pre-Heat

Temperature• Actual Reactivation Heater

Temperature & HeaterResponse Percentage

• Actual Reactivation Air LeavingTemperature

The D-Tech-20 shall automaticallyinitialize SCREENSAVER MODE androtate the above information if noaction is taken at the user interface.

Alarm Conditions

Alarm conditions shall activate avisual indicator and, if associated,shall close a SUMMARY ALARMcontact connection.

Microprocessor Control - D-Tech-20

D-Tech-20 Series Controls

Guide Specifications - M

icroprocessor Control

The D-Tech-20 shall alert to thefollowing alarm conditions (if applica-ble):

Rotor Rotation FaultLoss of Process Air FlowLoss of Reactivation Air FlowDirty Pre-Filter on the Process AirDirty Post-Filter on the Process AirDirty Filter on the Reactivation AirBurner FaultLow Process Inlet Air TemperatureGas Pressure FaultHigh Reactivation Air TemperatureLow Reactivation Air TemperatureSpecific Sensor FailureLoss of PowerEmergency Mode Shutdown

The operator shall be able to selectwhich alarms are enabled or disabled.

Summary Alarm Contacts:A 24 VAC normally open or closedsummary alarm signal contactconnection shall be provided forremote indication of a SUMMARYALARM condition. The operator shallbe able to configure which alarms areassociated with the SUMMARYALARM.

Alarm Log:The last 25 alarms, including the time& date of the alarm shall be viewablethrough an operator interface function.The operator shall be able to clear theALARM LOG.

Event Log

The D-Tech-20 shall display the last50 events the system logged. Thefollowing events shall be logged by thesystem:

All alarms listed aboveUnit ON & OFF StatusProcess Blower ON & OFFPre-Cooling ON & OFFReactivation Blower/Rotor ON & OFFPre-Heating ON & OFFReactivation Heat ON & OFFPost-Cooling ON & OFFPost-Heating ON & OFFPassword Levels Accessed

Control Inputs & Outputs

The D-Tech-20 shall be capable of bothdigital (ON/OFF) and analog (propor-

tional integral, PI) control. Prior toshipment, each Dry Handler Plus unit’sD-Tech-20 shall be factory programconfigured to match the unit’s systemrequirements.

Analog Outputs:Reactivation HeaterPre-HeatPost CoolPost HeatPre-Heat

Digital Outputs:3 Pre-Cooling Stages3 Post Cooling StagesProcess BlowerReactivation Blower/Rotor DriveReactivation Heater2 Heater StagesPost HeatSummary FaultPre-Heat

Enhanced Features

Remote Stop/StartIncluded in the system’s electricalcontrol circuit shall be a 2-pin terminalconnection for remote stop/startcontrol of the dehumidifier.

Power Loss RestartIn the event power is lost to thesystem, the D-Tech-20’s flash memo-ry shall automatically enable thesystem to restart when power isrestored, without the loss of the “last”stored setpoints or other systemconfiguration settings.

Sequential Load ActivationTo minimize the total in-rush currentduring system start-up/restart, the D-Tech-20 shall be configured for time-delayed sequential start-up of theReactivation Heaters, the Pre-Coolingstages, & the Post-Cooling stages.

Short Cycle ProtectionDX Pre-Cooling and/or DX Post-Cooling compressors shall be protect-ed from frequent compressor cyclingthrough the D-Tech-20’s minimumcompressor ON and OFF timers.

SecurityMultiple security levels shall preventunauthorized adjustment of critical

system parameters. The user shallbe required to provide a four-digitpassword to access the unit’s set-points, sensor calibrations andconfiguration parameters.

Screensaver ModeThe microprocessor shall incorporate a“screensaver-mode” that automaticallyand continuously scrolls through theSystem Status Data Level

The D-Tech-20 shall automaticallyinitiate an adjustable timer as soon asone of the key-pad buttons is released.If no action is taken for the adjustabletime delay, the controller shall auto-matically begin cycling all the screensin the “System Status Data” level.

Control ModesThe D-Tech-20 can be factory config-ured for 4 different modes of control:“D-Stat II”, “H-Trac”, “DEW-Trac” & C-Trol II. These 4 configurations allow theuser to select if the Dry Handler Plusoperates by ON/OFF humidity control,proportional humidity control, orproportional dewpoint control.

Diagnostics & Service Mode

The microprocessor shall incorporate aself-diagnostic algorithm that continuallytests system functions and hardwareoperation. In the even of such a failure,the user shall be alerted to the conditionvia a visual and contact closure alarm.

Control Board:Initiates a self-test of the controlsystem:

Output Diagnostics:(Service Mode)All microprocessor control inputs & outputscan be manually controlled & tested at thecontroller by a certified technician.

Pre-Cool Valve Pre-Cool Compr(s)Post-Cool Valve Post-Cool Compr(s)Process Blw Motor Rotor Drive MotorReact Heaters React Blw Motor

Alternate Sensor ReplacementIn the event a sensor would needimmediately replaced, the D-Tech-20provides the ability to change the signaltype on all the process sensors.

Microprocessor Control - D-Tech-20

Guide Specifications - M

icroprocessor Control

4-9

Optional Features - Guide Specifications

Desiccant Rotors

SATS offers a selection of optionaldesiccant rotor media designedspecifically for extreme applications.Contact the factory regarding specificapplication of these rotor medias.

Molecular Sieve:Preferred with low inlet % RH (<50%)and/or when lowest possible outletdewpoints are required.

Ultra High Efficiency:Preferred when reactivation energy islimited. Requires less reactivationenergy per pound of moisture removalthat the standard rotor.

Cabinet Options

Double Wall Cabinet:The cabinet shall be double wall type,constructed of 0.125" thick 5052grade aluminum with an inner wall of0.090" thick 5052 grade aluminum.The cabinet shall be of unitizedformed sections. The gap betweenthe outer and inner wall shall be 2inches. Two inch thick 3 lb densityfiberglass thermal insulation, with athermal heat transfer rate of less than0.27 Btu/ft3/F, shall be installed toprevent exterior cabinet condensation.A thermal break shall be incorporatedbetween the inner and outer cabinetwalls to prevent through metalcontact. Unit air leakage shall be lessthan 1% of design airflow rate mea-sured at rated unit static pressure of+10 inches w.c. The DHP manufactur-er shall provide plugged floor drains ineach section of the process air sideof the unit.

Air Inlet/Outlet Openings:Process Inlet ProtectionThe process make-up air inlet shallinclude a screened weather hood or aflanged outlet with louvers whererequired.

Weather Hood

Flanged w/ Louvers

Automatic Process Inlet DamperThe process make-up air inlet shallinclude an opposed blade type open-closed damper. When the DHP unit isenergized the opposed blade dampershall move to the fully open position.Contact closure by the end switchshall allow the DHP unit to be ener-gized. When the DHP unit is de-energized the damper shall move tothe fully closed position.

Reactivation Inlet/Outlet Protection

Reactivation Outlet Hood

Optional protective weather hood withscreens are available for the reactiva-tion outlet and for the reactivationinlet.

Filtration

Optional Air Filtration:Dryhandler Plus systems are availablewith high efficiency IAQ consciousand HEPA filters. High efficiency filtermodules are 36” wide. The pressuredrop across the modules are 1.5” w.c.for high efficiency and 2.0” w.c. forHEPA filter modules. HEPA filterapplications should consult thefactory.

Process Air InletF1: High Efficiency 45% to 95% Filters

with 30% Pre-FilterF2: HEPA Filters

Process Air OutletF1: High Efficiency 45% to 95% Filters

with 30% Pre-FilterF2: HEPA Filters

(Note: Please consult your local SATS salesrepresentative if your application requiresF1or F2 filtration or for filtration other thanlisted above.)

Dirty Filter Gauges:Dirty filter condition shall be detectedby a factory mounted static pressureindicating gauge, used to show thepressure drop in w.c. across aspecified filter bank.

A static pressure gauge shall bemounted on the front of the cabinet toindicate pressure drop across thefollowing filter banks as specified:G1: Process Air InletG2: Process Air OutletG3: Reactivation Air Inlet

Dirty Filter Pressure Switches:Dirty filter condition shall be detectedby a factory mounted, adjustabledifferential pressure switch andindicated on the unit controller.

An adjustable differential pressureswitch shall be provided to indicatethat the pressure drop has reachedan undesirable level across thefollowing filter banks as specified:S1: Process Air InletS2: Process Air OutletS3: Reactivation Air Inlet

SELECTED OPTIONS

Optional Features - G

uide Specifications

4-10

4-11

DX Air Cooled

Thermostatic Expansion Valve:

Thermostatic expansion valves, for DXcooling coils, are provided shippedloose for installation by others.Valves are externally equalized andbalanced port design wheneverpossible. Solder connections arestandard.

Remote Condensing Unit:A remote air cooled condensing unit(RCU) rated for _____ tons of evapora-tor cooling capacity at 95 oF. con-densing air temperature shall beprovided by the DHP unit manufactur-er. Refrigeration controls and interfaceshall be by the DHP unit manufactur-er. The condensing unit shall includethe condenser coil, fan(s) and lowambient head pressure controls ifrequired to operate below 50 oF.ambient temperature; compressorwith crankcase heater if RCU isinstalled outdoors; compressorservice valves; schrader type chargingvalves; low pressure and high pres-sure controls; liquid line filter-drier;sight glass and moisture indicator anda suction line accumulator.

Water/Glycol Cooled

Pre & Post Cooling Chilled WaterControl Valves:

Systems incorporating Chilled Water(Glycol) Pre and/or Post Cooling Coilsshall have 3 way mixing valves, withproportional electric actuators provid-


ed as an option and shipped loose forinstallation by others. 120VAC powerand proportional control signal areprovided from the DHP control panel,interconnecting wiring is by others.Three way mixing valves are globetype with bronze seat, stainless steelstem, and brass plug. Valves through3" are threaded with bronze body,valves larger than 3" are flanged withiron body.

Pre/Post Heating

Pre & Post Steam Heating Con-trol Valves:Systems incorporating Steam Preand/or Post Heating Coils shall have 2way, valves with proportional electricactuators provided shipped loose forinstallation by others. 120VAC powerand proportional control signal areprovided from the DHP control panel,interconnecting wiring is by others.Two way valves for steam to 35 psigare globe type with bronze seat andbody, stainless steel stem, and brassplug. Two way valves for steam over35 psig to 100 psig are globe typewith bronze body, stainless steelseat, plug, and stem.

Control Sensors

D-Stat II Control Sensor:A duct or wall mount humidistat isavailable as an option, for mounting bythe installing contractor. The snapacting switch is actuated through along life, nylon ribbon sensing ele-ment. Humidistats have adjustablesetpoint (10-90%RH wall mount, 15-95%RH duct mount) with a 5%RHfixed differential.

H-Trac Control Sensor:A duct or wall mount humidity trans-mitter is available as an option formounting by the installing contractor.Humidity measurement is 0-95%RHwith accuracy up to +/- 2% RHutilizing a capacitive thin film polymersensor. Transmitters are loop pow-ered.

Dew-Trac & C-Trol II ControlSensor:A duct or wall mount humidity andtemperature transmitter is availableas an option, for installation by theinstalling contractor. Humidity mea-surement is 0-95%RH with accuracyup to +/- 2%RH utilizing a capacitivethin film polymer sensor. Temperaturemeasurement is (-)4 to 176 oF. ductmount, 23 to 131 oF. wall mount, withaccuracy to +/- 0.4 oF. Transmittersare loop powered.

Controller

Remote Control Panel:The DHP controller shall be interfacedthrough a remote mounted display/operator panel. (Optionally availableonly with the D-Tech 20 controller.)

Building Management Systems:Microprocessor inputs and outputsshall be capable of being remotelymonitored and controlled via a Build-ing Management System (BMS)/LocalArea Network (LAN) that can commu-nicate via Modbus protocol. (Option-ally available only with the D-Tech 20controller.)

The unit microprocessor shall beinternally configured for Modbusprotocol and shall incorporate anoptional RS485 serial card for a fieldwired connection to a remote system.(Note: A list of the communicationaddresses shall be available uponrequest from your local SATS SalesRepresentative.


uide Specifications

4-12


Electrical

Main Power Disconnect Switch:

Non-Fused DisconnectThe system shall be provided with anon-fused main power electricaldisconnect switch shipped loose forinstallation by others. The switch shallbe NEMA 3R rated for outdoor useand shall be the lockable type.

Fused DisconnectThe system shall be provided with afused main power electrical discon-nect switch shipped loose for installa-tion by others. The switch shall beNEMA 3R rated for outdoor use andshall be the lockable type.

Rotary Disconnect

The system shall be provided with afactory installed, main power rotaryelectrical disconnect switch.

Circuit BreakerThe system shall be provided with afactory installed, rotary, main powerelectrical circuit breaker switch.


uide Specifications

Interior Cabinet Lights:

Optional vapor resistant lights withbump guards shall be installed ineach cabinet section. The interiorlights shall be equipped with an on/offswitch. A 15 Amp, 120 VAC GFCIduplex electrical receptacle shall beprovided The lights and receptacleshall be wired in liquid tight conduit toa common point, 120VAC powerrequired by others

Dry Handler Plus(Model DHP-4250-77-G Shown)

Start-up

The DHP unit manufacturer shallprovide the services of a FactoryTechnician or Factory AuthorizedRepresentative to supervise start-upand provide on site training of theowner’s operating personnel orrepresentative.

5-1

Performance Data - (“A” Cabinet 750 to 3,000 CFM AirFlow)

Performance D

ata - 750 to 3,000 CFM

AirFlow

System Nominal Performance Capacity Data - (System Contains Pre-Cool and Post Cool)

Process Air Volume (SCFM) 750 1,150 1,500 1,500 2,250 3,000

100% Outside Air Rating:Entering Air Conditons Into DHP SystemDrybulb / Wetbulb (DB/WB °F) 95.0/78.0 95.0/78.0 95.0/78.0 95.0/78.0 95.0/78.0 95.0/78.0Dew Point Temperature (°F) 71.8 71.8 71.8 71.8 71.8 71.8Moisture Content (Gpp) 117.5 117.5 117.5 117.5 117.5 117.5

Leaving Air Conditons Out Of DHP SystemDrybulb / Wetbulb (DB/WB °F) 55.0/40.8 55.0/41.5 55.0/42.0 55.0/40.8 55.0/41.4 55.0/42.0Dew Point Temperature (°F) 19.3 22.4 24.2 19.4 22.0 24.4Moisture Content (Gpp) 15.0 17.3 18.9 15.1 17.0 18.9

Moisture Removal Capacity lb/hr 49.4 74.1 95.1 98.7 145.4 190.2 ( Gpp) 102.5 100.2 98.6 102.4 100.5 98.6

Mixed Air Rating:Entering Air Conditions Into DHP SystemDrybulb / Wetbulb (DB/WB °F) 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0Dew Point Temperature (°F) 62.9 62.9 62.9 62.9 62.9 62.9Moisture Content (Gpp) 85.9 85.9 85.9 85.9 85.9 85.9

Leaving Air Conditons Out Of DHP SystemDrybulb / Wetbulb (DB/WB °F) 55.0/40.8 55.0/41.5 55.0/42.0 55.0/40.8 55.0/41.4 55.0/42.0Dew Point Temperature (°F) 19.3 22.4 24.2 19.4 22.0 24.4Moisture Content (Gpp) 15.0 17.3 18.9 15.1 17.0 18.9

Moisture Removal Capacitylb/hr 34.2 50.7 64.6 68.3 99.7 129.2 ( Gpp) 70.9 68.6 67.0 70.8 68.9 67.0

Process Blower/Motor Data

External Static Pressure 1.0 1.0 1.0 1.0 1.0 1.0Horsepower 1.5 3 3 3 5 7.5Blower Type SWSI, FC SWSI, FC SWSI, BI SWSI, BI SWSI, BI SWSI, BIDrive Type Direct Direct Belt Belt Belt Belt

Desiccant Rotor Nominal Performance Data - (After Pre-Cooling)

Entering Air Temperature Into Desiccant RotorDry Bulb / Wet Bulb (DB/WB °F) 55.0/54.9 55.0/54.9 55.0/54.9 55.0/54.9 55.0/54.9 55.0/54.9Dew Point Temperature (°F) 54.8 54.8 54.8 54.8 54.8 54.8Moisture Content (Gpp) 64.0 64.0 64.0 64.0 64.0 64.0

Leaving Air Temperature Off Desiccant RotorDry Bulb / Wet Bulb (DB/WB °F) 116.3/65.9 113.5/65.5 112.0/65.3 116.2/65.9 114.0/65.6 111.9/65.3Dew Point Temperature (°F) 19.3 22.4 24.2 19.4 22.0 24.4Moisture Content (Gpp) 15.0 17.3 18.9 15.1 17.0 18.9


Desiccant Rotor Physical Data

Diameter (mm)- 550 550 550 770 770 770Rotor Nominal Face Velocity (fpm) 400 600 800 400 600 800Desiccant Media Type Silica Gel Silica Gel Silica Gel Silica Gel Silica Gel Silica Gel

“DHP” MODEL -750-55-( ) -1150-55-( ) -1500-55-( ) -1500-77-( ) -2250-77-( ) -3000-77-( )

5-2

Performance D

ata - 750 to 3,000 CFM

AirFlow


Desiccant Rotor Physical Data (Cont.)

Rotor Drive Motor Data:Motor Horsepower 1/80 1/80 1/80 1/80 1/80 1/80Drive Type Synchronous Belt (ALL)

Reactivation Blower / Motor DataAir Flow Rate (CFM) 250 383 500 500 750 1,000External Static Pressure 0.5 0.5 0.5 0.5 0.5 0.5Horsepower 0.75 0.75 1.0 1.0 1.5 3Blower Type SWSI, FC SWSI, FC SWSI, FC SWSI, FC SWSI, FC SWSI, FCDrive Type Direct Direct Direct Direct Direct Direct

Reactivation Design Air Temperature RiseEntering Air Temperature (°F DB Summer) 95 95 95 95 95 95Leaving Air Temperature Off Heater 285 285 285 285 285 285

Electric Heat Reactivation Data

“DHP” MODEL: -750-55-E -1150-55-E -1500-55-E -1500-77-E -2250-77-E -3000-77-E

kW Rating 15.0 22.5 30.0 30.0 45.0 60.0Control Type Proportional SCR (ALL)Heater Element Type Nichrome Wire Nichrome Wire Nichrome Wire Nichrome Wire Nichrome Wire Nichrome Wire

Steam Heat Reactivation Data

“DHP” MODEL: -750-55-S -1150-55-S -1500-55-S -1500-77-S -2250-77-S -3000-77-S

Steam Coil Data:Rows 2 2 2 2 2 2Face Velocity, fpm 150.0 229.8 300.0 300.0 450.0 600.0Coil Construction Al2 Fin/Cu Tube (ALL)

50 psig Inlet Steam Rating: (Standard Option)BTU/H Rating 51,410 81,260 104,310 104,310 157,880 206,390Condensate (lb/hr) 60.2 94.5 120.8 120.8 182.9 226.6Number of coils 2 3 3 3 4 4

100 psig Inlet Steam Rating: (Optional)BTU/H Rating 61,400 90,430 114,070 114,070 159,530 228,850Condensate (lb/hr) 75.6 110.4 138.7 138.7 192.7 279.7Number of coils 2 2 2 2 2 3

Direct-Natural Gas Fired Heat Reactivation Data

“DHP” MODEL: -750-55-G -1150-55-G -1500-55-G -1500-77-G -2250-77-G -3000-77-G

BTU/H Rating 51,300 78,592 102,600 102,600 153,900 205,200Gas Inlet Pressure Range (inches w.c.) 10 - 14 10 - 14 10 - 14 10 - 14 10 - 14 10 - 14Control Type Proportional Valve (ALL)

Electrical Data -

“DHP” MODEL w/Electric Reactivation: -750-55-E -1150-55-E -1500-55-E -1500-77-E -2250-77-E -3000-77-E @460-480V/3PH/60HZ- FLA/MCA/MFS 23.9/29.5/30 34.4/43/45 44.3/55.4/60 44.3/55.4/60 66/82.5/85 88.9/111.1/125

“DHP” MODEL w/Steam Reactivation: -750-55-S -1150-55-S -1500-55-S -1500-77-S -2250-77-S -3000-77-S @460-480V/3PH/6HZ- FLA/MCA/MFS 4.8/6/10 6.1/7.6/15 6.6/8.3/15 6.6/8.3/15 9.5/11.9/20 13.5/16.9/2

“DHP” MODEL w/Gas Reactivation: -750-55-G -1150-55-G -1500-55-G -1500-77-G -2250-77-G -3000-77-G @460-480V/3PH/60HZ- FLA/MCA/MFS 4.8/6/10 6.1/7.6/15 6.6/8.3/15 6.6/8.3/15 9.5/11.9/20 13.5/16.9/25

“DHP” MODEL -750-55-( ) -1150-55-( ) -1500-55-( ) -1500-77-( ) -2250-77-( ) -3000-77-( )

(Represents single point power requirement for standard DryHandler Plus System with standard Process Blower Motor andstandard Pre-Cooling and Post-Cooling Modules.)

Note: Reactivation heaters may not operate at their maximum capacity under normal operating conditions. Pleasecontact the factory for actual heater power ratings or for gas therms or steam consumption specific to an application.

Performance D

ata - 750 to 3,000 CFM

AirFlow


5-3

Chilled Water Pre-Cooling Coil Data

100% Outside Air Rating:Entering Air ConditionsEntering Air Temperature (DB/ WB °F) 95.0/78.0 95.0/78.0 95.0/78.0 95.0/78.0 95.0/78.0 95.0/78.0

Net Cooling CapacityTotal Cooling Capacity (BTU/H) 65,230 101,270 127,440 127,440 191,160 267,960Sensible Cooling Capacity (BTU/H) 34,260 52,990 67,180 67,180 100,760 267,960

Leaving Air ConditionsLeaving Air Temperature (DB/WB °F) 53.2/53.1 52.9/52.7 54.0/53.9 54.0/53.9 54.0/53.9 52.3/52.2Leaving Air Dew Point Temperature (°F) 19.3 22.4 24.2 19.4 22.0 24.4Moisture Content (Gpp) 53.0 52.5 53.8 53.8 53.8 52.1


Chilled Water ConditionsEntering/Leaving Water Temperature (°F) 45.0/55.3 45.0/55.4 45.0/55.1 45.0/55.1 45.0/55.1 45.0/55.6Chilled Water Flow Rate (GPM) 12.6 19.4 25.3 25.3 37.9 50.6Chilled Water Coil Pressure Drop (Ft.w.g.) 5.6 6.5 10.4 10.4 12.0 6.0

Chilled Water Coil DataRows 6 6 6 6 6 8Face Velocity, fpm 321.4 306.7 400.0 400.0 400.0 436.4Coil Construction Al2 Fin/Cu Tube (ALL)

Control Valve Data

Valve Type 3-way 3-way 3-way 3-way 3-way 3-waySize (Cv) 4.4 7.5 14.0 14.0 14.0 20.0Control Type Proportional Valve (ALL)

Mixed Entering Air Rating:Entering Air ConditionsEntering Air Temperature (DB/ WB °F) 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0Net Cooling CapacityTotal Cooling Capacity (BTU/H) 40,840 63,500 79,560 79,560 118,300 157,240Sensible Cooling Capacity (BTU/H) 26,100 40,240 51,660 51,660 76,470 102,410



Chilled Water Conditions

Entering/Leaving Water Temperature (°F) 45.0/55.7 45.0/55.8 45.0/55.4 45.0/55.4 45.0/55.3 45.0/55.3Chilled Water Flow Rate (GPM) 7.6 11.7 15.3 15.3 22.9 30.5Chilled Water Coil Pressure Drop (Ft.w.g.) 12.6 13.9 4.3 4.3 19.0 6.2


Control Valve Data

Valve Type 3-way 3-way 3-way 3-way 3-way 3-waySize (Cv) 4.4 4.4 7.5 7.5 7.5 14Control Type Proportional Valve (ALL)

“DHP” MODEL -750-55-( ) -1150-55-( ) -1500-55-( ) -1500-77-( ) -2250-77-( ) -3000-77-( )

Performance D

ata - 750 to 3,000 CFM

AirFlow


5-4

Chilled Water Post Cooling Coil Nominal Data - (Based on System With Pre-Cooling)

Entering Air Conditions From Desiccant CassetteEntering Air Temperature (DB °F) 116.3 113.5 112.0 116.2 114.0 111.9

Net Cooling CapacityTotal Cooling Capacity (BTU/H) 55,460 81,750 103,060 109,840 156,210 202,000

Leaving Air Conditions- (Compensated for Blower Heat Gain)Leaving Air Temperature (DB °F) 48.1 48.0 48.7 48.7 50.0 49.8


Chilled Water Coil DataRows 6 6 6 6 6 8Face Velocity, fpm 321 307 400 400 400 533Coil Construction Al2 Fin/Cu Tube (ALL)

Control Valve Data, Optional (Field Installed)

Valve Type 3-way 3-way 3-way 3-way 3-way 3-waySize (Cv) 4.4 7.5 7.5 7.5 14.0 20.0Control Type Proportional Valve (ALL)

Air Filtration

Pre-Cooling Section FiltrationNominal Size (Qty.) 12”x24”x2” (1) 12”x24”x2” (1) 12”x24”x2” (1) 12”x24”x2” (1) 12”x24”x2” (1) 12”x24”x2” (1)Efficiency Rating (per ASHRAE 52/76) 30% 30% 30% 30% 30% 30%Filter Type Pleated Pleated Pleated Pleated Pleated Pleated

DX Pre-Cooling Coil Nominal Data





DX Coil DataRows 6 6 6 6 6 6Face Velocity, fpm 309 493 429 429 429 468Saturated Suction Temperature (DB °F ) 40 40 40 40 40 40Coil Construction Al2 Fin/Cu Tube (ALL)

“DHP” MODEL -750-55-( ) -1150-55-( ) -1500-55-( ) -1500-77-( ) -2250-77-( ) -3000-77-( )

5-5

Performance D

ata - 750 to 3,000 CFM

AirFlow


“DHP” MODEL -750-55-( ) -1150-55-( ) -1500-55-( ) -1500-77-( ) -2250-77-( ) -3000-77-( )

DX Pre-Cooling Coil Nominal Data (Cont.)

Mixed Entering Air Rating:Entering Air ConditionsEntering Air Temperature (DB/ WB °F) 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0





DX Post-Cooling Coil Nominal Data - (Based on System With Pre-Cooling)





Electric Pre-Heating Coil Data- (Provided Specific to the Application- Contact SATS)

Direct Natural Gas Pre-Heating Data- (Provided Specific to the Application- Contact SATS)

Electric Post-Heating Coil Data- (Provided Specific to the Application- Contact SATS)

Direct Natural Gas Post Heating Data- (Provided Specific to the Application- Contact SATS)

5-6

Performance Data - (“B” Cabinet 2,750 to 7,250 CFM AirFlow)

Performance D

ata - 2,750 to 7,250 CFM

AirFlow

“DHP” MODEL -2750-107-( ) -4250-107-( ) -5500-107-( ) -3750-122-( ) -5500-122-( ) -7250-122-( )

System Nominal Performance Capacity Data - (System Contains Pre-Cool and Post Cool)

Process Air Volume (SCFM) 2,750 4,250 5,500 3,750 5,500 7,250

100% Outside Air Rating:Entering Air Conditions Into DHP SystemDrybulb / Wetbulb (DB/WB °F) 95.0/78.0 95.0/78.0 95.0/78.0 95.0/78.0 95.0/78.0 95.0/78.0Dew Point Temperature (°F) 71.8 71.8 71.8 71.8 71.8 71.8Moisture Content (Gpp) 117.5 117.5 117.5 117.5 117.5 117.5

Leaving Air Conditions Out Of DHP SystemDrybulb / Wetbulb (DB/WB °F) 55.0/40.5 55.0/41.3 55.0/41.9 55.0/40.8 55.0/41.3 55.0/41.9Dew Point Temperature (°F) 18.1 21.6 23.8 19.3 21.6 24.1Moisture Content (Gpp) 14.2 16.7 184 15.0 16.7 18.6


Mixed Air Rating:Entering Air Conditions Into DHP SystemDrybulb / Wetbulb (DB/WB °F) 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0Dew Point Temperature (°F) 62.9 62.9 62.9 62.9 62.9 62.9Moisture Content (Gpp) 85.9 85.9 85.9 85.9 85.9 85.9

Leaving Air Conditions Out Of DHP SystemDrybulb / Wetbulb (DB/WB °F) 55.0/40.5 55.0/41.3 55.0/41.9 55.0/40.8 55.0/41.3 55.0/41.9Dew Point Temperature (°F) 18.1 21.6 23.8 19.3 21.6 24.1Moisture Content (Gpp) 14.2 16.7 18.4 15.0 16.7 16.6


Process Blower/Motor Data

External Static Pressure 1.0 1.0 1.0 1.0 1.0 1.0Horsepower 5.0 7.5 10.0 5.0 10.0 15.0Blower Type SWSI, BI SWSI, BI SWSI, BI SWSI, BI SWSI, BI SWSI, BIDrive Type Belt Belt Belt Belt Belt Belt

Desiccant Rotor Nominal Performance Data - (After Pre-Cooling)

Entering Air Temperature Into Desiccant RotorDry Bulb / Wet Bulb (DB/WB °F) 55.0/54.9 55.0/54.9 55.0/54.9 55.0/54.9 55.0/54.9 55.0/54.9Dew Point Temperature (°F) 54.8 54.8 54.8 54.8 54.8 54.8Moisture Content (Gpp) 64.0 64.0 64.0 64.0 64.0 64.0

Leaving Air Temperature Off Desiccant RotorDry Bulb / Wet Bulb (DB/WB °F) 117.7/66.2 114.6/65.7 113.2/65.6 116.3/65.9 114.6/65.7 112.8/65.5Dew Point Temperature (°F) 18.1 21.6 23.8 19.3 21.6 24.1Moisture Content (Gpp) 14.2 16.7 18.4 15.0 16.7 18.6


Desiccant Rotor Physical Data

Diameter (mm)- 1,070 1,070 1,070 1,220 1,220 1,220Rotor Nominal Face Velocity (fpm) 400 600 800 400 600 800Desiccant Media Type Silica Gel Silica Gel Silica Gel Silica Gel Silica Gel Silica Gel

Performance D

ata - 2,750 to 7,250 CFM

AirFlow


5-7

“DHP” MODEL -2750-107-( ) -4250-107-( ) -5500-107-( ) -3750-122-( ) -5500-122-( ) -7250-122-( )

Desiccant Rotor Physical Data (Cont.)

Rotor Drive Motor Data:Motor Horsepower 1/12 1/12 1/12 1/12 1/12 1/12Drive Type Synchronous Belt (ALL)

Reactivation Blower / Motor DataAir Flow Rate (CFM) 917 1,417 1,833 1,250 1,833 2,417External Static Pressure 0.5 0.5 0.5 0.5 0.5 0.5Horsepower 2.0 3.0 3.0 3.0 3.0 5.0Blower Type SWSI, FC SWSI, FC SWSI, BAF SWSI, FC SWSI, BAF SWSI, BAFDrive Type Direct Direct Direct Direct Direct Direct

Reactivation Design Air Temperature RiseEntering Air Temperature (°F DB Summer) 95 95 95 95 95 95Leaving Air Temperature Off Heater 285 285 285 285 285 285

Electric Heat Reactivation Data

“DHP” MODEL: -2750-107-E -4250-107-E -5500-107-E -3750-122-E -5500-122-E -7250-122-E

kW Rating 60.0 90.0 112.5 75.0 112.5 150.0Control Type Proportional SCR (ALL)Heater Element Type Nichrome Wire Nichrome Wire Nichrome Wire Nichrome Wire Nichrome Wire Nichrome Wire

Steam Heat Reactivation Data

“DHP” MODEL: -2750-107-S -4250-107-S -5500-107-S -3750-122-S -5500-122-S -7250-122-S

Steam Coil Data:Rows 2 2 2 2 2 2Face Velocity, fpm 222.0 343.0 444.0 303.0 444.0 547.0Coil Construction Al2 Fin/Cu Tube (ALL)

50 psig Inlet Steam Rating: (Standard Option)BTU/H Rating 195,000 293.000 368,000 261,000 368,000 498,000Condensate (lb/hr) 214.0 321.0 404.0 303.0 404.0 547.1Number of coils 3 3 3 3 3 4

100 psig Inlet Steam Rating: (Optional)BTU/H Rating 218,000 316,000 390,000 284,000 390,000 555,000Condensate (lb/hr) 248.0 361.0 428.0 324.0 428.0 623.0Number of coils 2 2 2 2 2 3

Direct-Natural Gas Fired Heat Reactivation Data

“DHP” MODEL: -2750-107-G -4250-107-G -5500-107-G -3750-122-G -5500-122-G -7250-122-G

BTU/H Rating 188,168 290,768 376,132 256,500 376,132 495,968Gas Inlet Pressure Range (inches w.c.) 10 - 14 10 - 14 10 - 14 10 - 14 10 - 14 10 - 14Control Type (Proportional Valve- ALL)

Electrical Data-

“DHP” MODEL w/Electric Reactivation: -2750-107-E -4250-107-E -5500-107-E -3750-122-E -5500-122-E -7250-122-E @460-480V/3PH/60HZ- FLA/MCA/MFS 85.5/106.9/110 128.4/160.5/175 160.7/200.9/225 106.0/132.5/150 160.7/200.9/225 215.2/269.0/300

“DHP” MODEL w/Steam Reactivation: -2750-107-S -4250-107-S -5500-107-S -3750-122-S -5500-122-S -7250-122-S @460-480V/3PH/60HZ- FLA/MCA/MFS 10.1/12.6/20 15.3/19.1/30 19.3/24.1/40 11.8/14.7/25 19.3/24.1/40 26.7/33.4/60

“DHP” MODEL w/Gas Reactivation: -2750-107-G -4250-107-G -5500-107-G -3750-122-G -5500-122-G -7250-122-G @460-480V/3PH/60HZ- FLA/MCA/MFS 10.1/12.6/20 15.3/19.1/30 19.3/24.1/40 11.8/14.7/25 19.3/24.1/40 26.7/33.4/60

(Represents single point power requirement for standard DryHandler Plus System with standard Process Blower Motor andstandard Pre-Cooling and Post-Cooling Modules.)

Note: Reactivation heaters may not operate at their maximum capacity under normal operating conditions. Pleasecontact the factory for actual heater power ratings or for gas therms or steam consumption specific to an application.

Performance D

ata - 2,750 to 7,250 CFM

AirFlow


5-8

“DHP” MODEL -2750-107-( ) -4250-107-( ) -5500-107-( ) -3750-122-( ) -5500-122-( ) -7250-122-( )

Chilled Water Pre-Cooling Coil Data







Control Valve DataValve Type 3-way 3-way 3-way 3-way 3-way 3-waySize (Cv) 20 28 41 28 41 41Control Type Proportional Valve (ALL)

Mixed Entering Air Rating:Entering Air ConditionsEntering Air Temperature (DB/ WB °F) 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0Net Cooling CapacityTotal Cooling Capacity (BTU/H) 147,570 247,580 330,000 221,000 330,000 422,000Sensible Cooling Capacity (BTU/H) 95,550 158,250 206,200 139,000 206,000 267,000

Leaving Air ConditonsLeaving Air Temperature (DB/WB °F) 53.2/53.0 51.4/51.3 50.2/50.1 51.3/51.2 50.2/50.1 51.3/51.2Leaving Air Dew Point Temperature (°F) 52.8 51.1 50.0 51.1 50.0 51.1Moisture Content (Gpp) 59.4 55.7 53.5 55.7 53.5 55.7


Chilled Water Conditions

Entering/Leaving Water Temperature (°F) 45.0/55.5 45.0/56.4 45.0/56.8 45.0/56.6 45.0/56.8 45.0/56.4Chilled Water Flow Rate (GPM) 28.0 43.2 55.9 38.1 55.9 73.7Chilled Water Coil Pressure Drop (Ft.w.g.) 3.3 6.5 4.6 5.2 4.6 7.4


Control Valve Data

Valve Type 3-way 3-way 3-way 3-way 3-way 3-waySize (Cv) 14 28 28 20 28 41Control Type Proportional Valve (ALL)

5-9

Performance D

ata - 2,750 to 7,250 CFM

AirFlow


“DHP” MODEL -2750-107-( ) -4250-107-( ) -5500-107-( ) -3750-122-( ) -5500-122-( ) -7250-122-( )

Chilled Water Post Cooling Coil Nominal Data - (Based on System With Pre-Cooling)





Chilled Water Coil DataRows 6 6 6 6 6 6Face Velocity, fpm 366 453 345 400 345 455Coil Construction Al2 Fin/Cu Tube (ALL)

Control Valve Data, Optional (Field Installed)

Valve Type 3-way 3-way 3-way 3-way 3-way 3-waySize (Cv) 20 28 41 28 41 41Control Type Proportional Valve (ALL)

Air Filtration

Pre-Cooling Section FiltrationNominal Size (Qty.) 24”x24”x2” (4) 24”x24”x2” (4) 24”x24”x2” (4) 24”x24”x2” (4) 24”x24”x2” (4) 24”x24”x2” (4)Efficiency Rating (per ASHRAE 52/76) 30% 30% 30% 30% 30% 30%Filter Type Pleated Pleated Pleated Pleated Pleated Pleated

DX Pre-Cooling Coil Nominal Data






5-10

Performance D

ata - 2,750 to 7,250 CFM

AirFlow


“DHP” MODEL -2750-107-( ) -4250-107-( ) -5500-107-( ) -3750-122-( ) -5500-122-( ) -7250-122-( )

DX Pre-Cooling Coil Nominal Data (Cont.)

Mixed Entering Air Rating:Entering Air ConditonsEntering Air Temperature (DB/ WB °F) 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70.0 85.0/70. 85.0/70.0


Leaving Air ConditonsLeaving Air Temperature (DB/WB °F) 54.0/53.1 54.7/53.8 54.8/53.8 55.0/53.9 54.8/53.8 51.1/50.9Leaving Air Dew Point Temperature (°F) 52.4 53.1 53.1 53.1 53.1 50.7Moisture Content (Gpp) 59.7 61.3 61.2 61.3 61.2 56.0



DX Post-Cooling Coil Nominal Data - (Based on System With Pre-Cooling)





Electric Pre-Heating Coil Data- (Provided Specific to the Application- Contact SATS)

Direct Natural Gas Pre-Heating Data- (Provided Specific to the Application- Contact SATS)

Electric Post-Heating Coil Data- (Provided Specific to the Application- Contact SATS)

Direct Natural Gas Post Heating Data- (Provided Specific to the Application- Contact SATS)

5-11

Grains Per Pound(GPP)

1. Find the correct “Process EnteringMoisture” (humidity) value in grainsper pound (GPP) on the x-axis of theMoisture Removal Capacity graph.

2. Move vertically in a straight line tointersect the curve closest to theentering air temperature. Interpolateas required.

3. Move horizontally to the left andintersect the scale marked “ProcessLeaving Air Moisture”. The value atthis point represents the moisture/humidity leaving the dehumidifier ingrains per pound.

Degrees Fahrenheit(°F)

1. Find the correct process “ProcessEntering Moisture” (humidity) value ingrains per pound (GPP) on the x-axisof the Process Leaving Air Tempera-ture graph.

2. Move vertically in a straight line tointersect the curve closest to theentering air temperature.

3. Move horizontally to the left andintersect the scale marked “ProcessLeaving Air Temp.” The value at thispoint represents the air temperatureleaving the dehumidifier in °F.

Moisture Removal Capacity

Performance Curves - 400 FPM Rotor Face Velocity

Process Leaving Air Temperature400 FPM Process Air Velocity

Moisture Removal Capacity400 FPM Process Air Velocity

Note:Process leaving air temperatures as shown are at maximum values at standard full rated heater output. The actual leaving airtemperature will be lower whenever the heater output is below full rated output. The condition will occur during heater modula-tion cycles due to partial loading of the dehumidifier.

Process LeavingTemperature

Performance C

urves - 400 FPM Face Velocity

Performance curves are provided for reference only. Data is based on reactivation entering air conditions at95 oF/130 GPP. Please contact SATS for precise performance modeling specific to your application.

Pro

cess

Lea

ving

Air

Tem

p: °

FP

roce

ss L

eavi

ng A

ir M

oist

ure:

GP

P

Process Entering Moisture: GPP


5-12

Moisture Removal Capacity



Moisture Removal Capacity600 FPM Process Air Velocity


Grains Per Pound(GPP)

1. Find the correct “Process EnteringMoisture” (humidity) value in grainsper pound (GPP) on the x-axis of theMoisture Removal Capacity graph.








Performance C



Pro

cess

Lea

ving

Air

Tem

p: °

FP

roce

ss L

eavi

ng A

ir M

oist

ure:

GP

P



5-13


Moisture Removal CapacityMoisture Removal Capacity800 FPM Process Air Velocity Grains Per Pound

(GPP)1. Find the correct “Process Entering

Moisture” (humidity) value in grainsper pound (GPP) on the x-axis of theMoisture Removal Capacity graph.










Performance C



Pro

cess

Lea

ving

Air

Tem

p: °

FP

roce

ss L

eavi

ng A

ir M

oist

ure:

GP

P



5-14

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Notes

TYPICAL CONFIGURATION - Standard Left Hand Orientation

6-1

Dimensional Data - (“A” Cabinet 750 to 3,000 CFM AirFlow)

Dim

ensional Data - 750 to 3,000 C

FM A

irFlow

46.00

33.50

33.34

REACTIVATION HEATER BOX

ELE

PROCESS INLET

REACTIVATION HOOD

SKID

REACTIVATION FILTER BOX

HOOD

(OPTIONAL)

(OPTIONAL)

DISCONNECT

(OPTIONAL)SWITCH

USER INTERFACE BOX

VIEWING WINDOW

DIFFERENTIAL PRESSUREGAUGE BOX

DESICCANT DRIVE

VATION AIR INLET

LOCKING HANDLES

POST FILTER MODULE

PRE FILTER MODULE

POST COOL MODULE

DRYHANDLER MODULE

MODULE

PRE-COOL MODULE

MODULE

PROCESS BLOWER

TYPICAL CONFIGURATION SHOWING MODULE SPLITS

Dimensional Data - (“A” Cabinet 750 to 3,000 CFM AirFlow)

6-2

Dim

ensional Data - 750 to 3,000 C

FM A

irFlow

MODULE SECTION REF. LTR. DIMENSION

PROCESS BLOWER A 56.0"

POST FILTER B 24.0"

POST COOL C 36.0"

DRY HANDLER D 62.0"

PRE-COOL E 36.0"

PRE-FILTER F 24.0"

28.00

30.004X 1.50 8.00

K

J

L

G

H84.50

30.00

28.00

15.50

19.87

59.57

15.93

8.00

4X 1.50

FRONT

LEFT SIDE RIGHT SIDE

USER INTERFACE BOX

51.00

D EA B C F

OCESSR IN

PAIR OUT

DOORFILTERAREA

ACCESSDOOR DOOR

ACCESSDOOR

WEATHER HOOD

238.00

SWITCH(OPTIONAL)

DISCONNECT

R HOODN

44.31

NOTE: LOCATION OF ELECTRICAL CONTROLS MAY VARYDEPENDING ON OPTIONS SELECTED

DHP MODEL DIM G DIM H DIM J DIM K DIM L

750-55-( )-LS/SD 30.88" 7.50" 2.25" 2.00" 1.50"

1150/1500-77-( )-LS/SD 30.88" 8.00" 3.69" 2.00" 1.50"

1500/2250-77-( )-LS/SD 30.88" 8.00" 3.69" 2.00" 1.50"

3000-77-( )-LS/SD 30.88" 8.75" 4.25" 2.00" 1.50"

Dimensional Data - (“B” Cabinet 2,750 to 7,250 CFM AirFlow)

TYPICAL CONFIGURATION - Standard Left Hand Orientation

6-3

Dim

ensional Data - 2,750 to 7,250 C

FM A

irFlow

61.00

41.00

47.00

DISCONNECT SERVICE SWITCH(OPT

REACTIVATION HEATER BOX

USER INTERFACE

E

PRESSURE GAUGE BOX

REACTIVATION HOOD

SKID

REACTIVATION FILTER BOX

REACTIVATION AIR INLET

PROCESS INLETHOOD(OPTIONAL)

(OPTIONAL)

DESICCANT DRIVEVIEWING WINDOW

LOCKING HANDLES

POST FILTER MODULE

PRE FILTER MODULE

POST COOL MODULE

DRYHANDLER MODULE

PRE-COOL MODULE

PROCESS BLOWER

MODULE

ULE

TYPICAL CONFIGURATION SHOWING MODULE SPLITS

Dimensional Data - (“B” Cabinet 2,750 to 7,250 CFM AirFlow)

6-4

Dim

ensional Data - 2,750 to 7,250 C

FM A

irFlow

USER INTERFACE BOX

69.00

D E

53.98

A B C F

TION

PROCESSAIR IN

ACCESS

WEATHER HOODw/ SCREEN (OPTIONAL)

WEATHER HOODw/ SCREEN (OPTIONAL)

DISCONNECT SWITCH(OPTIONAL)

254.00

NOTE: LOCATION OF ELECTRICAL CONTROLS MAY VARYDEPENDING ON OPTIONS SELECTED

24.75

30.00

4X 1.50 48.00 6.50

G

H

K

L

J

110.00

48.00

23.50

30.00

19.87

31.31

81.32

4X 1.506.50

26.85

FRONT

LEFT SIDE RIGHT SIDE

MODULE SECTION REF. LTR. DIMENSION

PROCESS BLOWER A 72.0"

POST FILTER B 24.0"

POST COOL C 36.0"

DRY HANDLER D 62.0"

PRE-COOL E 36.0"

PRE-FILTER F 24.0"

DHP MODEL DIM G DIM H DIM J DIM K DIM L

2750/4250-107-( )-LS/SD 49.25" 8.00" 5.31" 2.00" 1.50"

3750-122-( )-LS/SD 49.25" 8.00" 5.31" 2.00" 1.50"

5500-107-( )-LS/SD 54.88" 11.80" 10.69" 2.19" 1.13"

5500/7250-122-( )-LS/SD 54.88" 11.80" 10.69" 2.19" 1.13"

Date post:	15-May-2018
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Desiccant Dehumidification From 750 to 7,250...

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