STULZ Ultrasonic Engineering Manual
Contents
1. 8 81 Iu 15 75 8 9 STULZ 27 00 30 66 n 0 0 STUILZ Ultra Series Control System Diagram Ultra Series Control System Diagram e H H 48V CONTROL POWER WIRES H H H H H H STRAINER RECOMMENDED E SHUT OFF Pi M TO DRAIN include Air Gap RECOMMENDED SHUT OFF ADDITIONAL HUMIDIFIERS ON CONTROL BOX TYPICAL TO DRAIN include Air Gap STAINLESS STEEL OR D I GRADE PVC 48V CONTROL POWER WIRES TO CONTROL BOX SEE TABLE FOR NUMBER OF WIRES CONTROL BOX INDOOR USE ONLY eeeeeeee REMOTE COMMON SUMMARY ALARM 2 WIRE CLOSE ON ALARM x2 eeeeeeee REMOTE ON OFF 2 WIRE ON OFF OPTIONAL XE HUMIDITY HI LIMIT STAT 2 WIRE ON OFF OPTIONAL X4 PROPORTIONAL HI LIMIT SENSOR 2 WIRE 4 20mA OPTIONAL X4 eeeeeeee HUMIDITY CONTROL SENSOR 2 WIRE 4 20mA STANDARD 2 WIRE 4 20mA OR 0 10Vdc IF BMS SIGNAL OPTIONAL POWER SUPPLY 2 WIRE W GRN SINGLE PHASE 3 WIRE W GRN THREE PHASE m I 0 X3 2 WIRE RECOMMENDED CONDUCTIVITY PROBE SHUT OFF PROBE 3 4 WATER SUPPLY 48 VDC WIRE SIZING FROM CONTROL BOX TO HUMIDIFIERS cwarts MP Inn ndes Gnd DA 246 DA 366 DAH 16 486 DAH 24 726 DAH 24 w BF 24 766 DAH 30 DAH 30 w BF 30 946 LIS N DRH 04 134 DRH 06 195 DRH 08 252. pas 2 wither3o wither30 2 wither3o 15 wa u u u ufoju u UJI 2 2 2 2 NOTE Electrical data based on UL 508 requirements to indicate full component loading 26 a Controls Guide Specification A Series Control Box On Off The STULZ Ultrasonic control box shall be the A Series one step control type The control box shall work with a wall or duct humidistat that will automatically turn ON or OFF the ultrasonic humidifier A water conductivity measurement circuit board shall be provided and be integral to the control box A conductivity probe shall ship loose and is to be installed in the water line supplying the humidifier and connected to the control box to monitor mineral content of feed water The control box shall operate one humidifier Each A Series control box shall contain a power supply contactor circuit breaker fan switch and lights necessary to control the humidifier system and shall be housed in an enclosure designed for indoor use only The control boxes shall be UL listed as a complete assembly A Series Options Wall or duct mount high limit humidistat e Dry contact for remote annunciation of water quality alarm Air pressure fan proving switch Ultra Series Control Box Proportional The STULZ Ultrasonic control box shall be the Ultra Series proportional control ty
3. 00000 ULTRA SERIES AUXILLIARY CONTROL BOX Unit weight 250 Ibs Unit weight 250 Ibs Ultra Series Control Box Ultra Series Control Box ULS 8 81 27 00 30 66 27 00 8 81 R TT 1 15 75 0 0 g STULZ 27 00 30 66 1 HL o 0 STUILZ Iq seuueg enJn SJ01 UO0D ISUDW jeuo suime 23 Ultra Series Trim Control Box Controls Ultra Series Dimensional Drawings 24 277 amp Unit weight 115 Ibs MIU MU Unit weight 115 Ibs Ultra Series Trim Control Box ULT 18 00 8 81 Lh E E STULZ oc 27 00 30 66 0 6 18 00
4. D 9 090 Humidification STULZ Ultrasonic Humidification Systems Energy Efficient Ultrasonic Humidifiers For Duct AHU Wall Mounted amp Stand Alone Applications EM Engineering Manual STULZ STULZ Driving innovation in our industry providing highest quality environmental control products superior technology customer solutions and exceptional customer service while being a socially and environmentally responsible and ethical company STULZ is dedicated to providing innovative solutions for critical temperature and humidity control needs STULZ designs and manufactures specialized energy efficient environmental control equipment STULZ serves a diverse marketplace our customers represent a variety of industries including telecommunications information technology medical financial educational industrial process and government Our world class island manufacturing process takes place in a modern 150 000 ft facility located in Frederick MD USA STULZ combines a global network of sales and service companies with an extensive factory engineering staff and highly flexible manufacturing resources dedicated to providing world class quality innovation and customer service This commitment to excellence along with a standard two year warranty fast lead times and outstanding customer service make STULZ the perfect choice for all your environmental control needs Solutions that help y
5. NS NN NS iN Multiple Humidifier Power and Data Communications Wiring End of Line Resistor on Last Humidifier in Data Communications String One per Controller Data Communications Cable Humidifier to Humidifier 6 Ft Power Cable 1 Per Humidifier 25 Ft Data Communications Cable to Controller DAH Series Optional Features Technical amp Dimensional Data 3 4 Water Connection Mounting Rack Rear View 12 STUILZ Duct Mounted Recommended Installation CASCADE ARRANGEMENT AIR FLOW gt VERTICAL ARRANGEMENT AIR FLOW gt 30 TYPICAL ALL TRANSITION SURFACES AIR FLOW gt MAX 30 TYPICAL ALL TRANSITION SURFACES AIR FLOW gt SECTION A A SECTION A A Note 1 Provide access panel sufficient for units to be removed STUILZ Duct Mounted Applications DAH Series Humidifiers uornej eysuj PING 59195 HVA 13 AHU Mounted Applications DAH Series Air Handling Unit Recommended Installation DAH Series Humidifiers Air Handling Unit Recommended Installation RETURN AIR OPTIONAL RECOMMENDED LOCATION LOCATION OUTSIDE AR gt SUPPLY gt AIR S HEATING COIL COOLING COIL FILTERS MIN MIN Note Avoid mounting humidifiers directly upstream of b
6. Proportional Ultra Series Controls s o3u0 5 Standard ULS Control Box Auxiliary UKS Box Not always required Proportional Ultra Trim Controls Trim ULT Control Box Trim Auxiliary UXT Box Not always required Auxiliary boxes shall be used to locate power supplies near the humidifiers to maintain the maximum wire length requirement and to provide power for additional humidifiers when the capacity of the control box is exceeded STULZ 27 Controls Guide Specification Controls Guide Specs 28 All alarms outputs displays and signals associated with the microprocessor are listed below for reference All points may not necessarily be utilized depending on the configuration of the system Each control box contains a transformer power supplies contactors circuit breakers switches and fan necessary to control the humidification system and shall be housed in enclosures designed for indoor use only The microprocessor shall be password protected to ensure against unauthorized change of parameter settings The control boxes shall be UL listed as a complete assembly CONTROL ALARMS DISPLAYS AND SIGNALS Alarms Water Conductivity Pre alarm Water Conductivity Alarm Displays Actual Humidity Humidity Setpoint High Humidity Current Capacity Output 96 Low Humidity Fill Cycle Sensor Input Alarm Drain Valve Activated Low Temperature Unit Output 96 Water Leak Detection Flu
7. To calculate the humidification load always arrive to the difference in grains of water per cubic foot see table below between the outside air and the room design conditions Whenever possible use the three methods and pick the largest load to size your humidification equipment See examples shown for reference Grains of Water Per Cubic Foot Saturated Air 10096 RH Example 1 a Make up Air assume that an HVAC system serving a meeting room with a total air volume of 10 000 cfm uses 1596 outside air for make up during the winter season Worst case winter conditions for this area are 10 F at 3096 RH Room conditions are to be maintained at 72 F and 45 RH The amount of make up air entering the HVAC system is 15 x 10 000 1500 cfm From Table 1 at 10 F there are 0 78 grains of water per cubic foot of 10096 RH saturated air At 3096 RH there are 0 3 x 0 78 0 234 grains ft For the room conditions 72 F and 4596 RH 0 45 x 8 59 3 866 grains ft Humidification Load 1500cfm x 3 866 0 234 grains ft x 60 min hr 7000 grains Ib 46 7 lbs hr b Exhaust Air assume that the same room has a separate kitchen with a 200 cfm exhaust fan The humidification load for the kitchen only is H 200 cfm x 3 866 0 234 grains ft x 60 min hr 7000 grains Ib H 6 2 Ibs hr Example 2 Natural Ventilation assume t
8. safety circuits shall shut off the humidifier A heat sink dissipater shall be used to serve as temperature protection for the print plate and shall be located in the water tank of the nebulizing module The drain overflow shall provide protection from overflow conditions In addition an internal solenoid valve shall provide for drain command from the internal controller and shall provide automatic drain if the humidifier is idle for 72 hours Additionally shorter drain on idle times may be set in the Ultra Series controller A water filter shall be provided to prevent foreign materials from entering the system When connected to a drain system the plumbing shall include an air gap and conform to all local and national plumbing codes Each nebulizing module shall be equipped with two devices a transducer print plate and a transducer Each circuit shall use the thickness vibration method of humidification via the transducer The transducer print plate shall generate electric high frequency energy in the oscillatory circuit and the transducer shall convert the electric energy into mechanical energy causing the water particles to vibrate at high speed cavitation to produce high energy vapor nebula The nebula particles shall have an average diameter of 1 micron 0 001 mm Any water particles of larger diameter shall be trapped by the nebula distribution device cover and collected back in the water tank The vibrating frequency of
9. 6 7 8 9 10 11 12 13 14 15 16 o o o u amp 5 w Nv 3 o o u 5 w mwm o w m Note See the following pages for control box dimensions 1 1 1 1 1 1 1 1 il 1 1 1 1 1 il 4 1 1 1 1 1 1 1 1 il 1 1 1 1 1 1 1 1 1 1 1 1 w m 3 oj oj 2 2 oj o oj o u u 2 amp 5 uw uw r Nw 25 3 o o w w m wm 2 o o 2 o Control Auxiliary Box Sample Configuration ABjw w 2 oj w mw 3 o RECOMMENDED RECOMMENDED SHUT OFF SHUT OFF VALVE VALVE STRAINER DATA TO DRAIN COMMUNICATION CABLE include Air Gap RECOMMENDED SHUT OFF VALVE TO DRAIN include Air Gap o o o ol lo Men TO DRAIN TO DRAIN Include Air Gap Include Air Gap RECOMMENDED RECOMMENDED RECOMMENDED SHUT OFF SHUT OFF SHUT OFF VALVE VALVE Y TO DRAIN Include Air Gap TO DRAIN Include Air Gap DATA COMMUNICATION CABLE 8 o o 000 a8 voc 48 VDC TO POWER SUPPLY ULTRA SERIES MASTER CONTROL BOX 2 WIRE SHIELDED CABLE TO POWER SUPPLY D 1 WATER SUPPLY D I WATER CONDUCTIVITY PROBE SUPPLY 00000 VDC ULTRA SERIES AUXILLIARY ITROL BOX To POWER SUPPLY
10. DRH DIRECT ROOM HUMIDIFIER AUXILIARY TRIM S STANDALONE NO ULTRA SERIES CONTROL NUMBER OF TRANSDUCERS Blank STANDARD ULTRA SERIES CONTROL Ultra Series Control Model Nomenclature ULS 4 DAH 08 _ MODEL OF HUMIDIFIERS ULS ULTRA SERIES CONTROL BOX soJnje euulawN APO Jeuipiung 2 21015 UXS ULTRA SERIES AUXILIARY BOX TO BE CONTROLLED ULT ULTRA SERIES TRIM CONTROL BOX UXT ULTRA SERIES TRIM AUXILIARY BOX NUMBER OF HUMIDIFIERS TO BE CONTROLLED Examples ULS 6 DRH 08 Ultra series control box 6 humidifiers Model DRH 08 UXT 4 DRH 08 A Trim auxiliary box 4 humidifiers Model DRH 08 A STUILZ 7 Features Accessories Features Controls Water Treatment a On Off A Series Controls Proportional Ultra Series Controls Complete RO DI Systems Accessories NG f j f f f f i 2i 2 H H H Lj j f f y NS SO SNG S Wall Mounting Brackets DRH Series Humidifiers Add on Booster Fans DAH Series Humidifiers f Mounting Racks DAH Series Humidifiers STUILZ DAH Series Duct amp Air Handling Unit Mounted The DAH Series STULZ Ultrasonic Humidifier is designed for use with central station Air Handling Units AHU and can be located conveniently in
11. Off and Ultra Series Proportional All control boxes have water quality monitoring as standard The water quality monitoring is provided to ensure clean mineral free mist production The control boxes are designed for indoor installation only A Series control boxes are intended for single humidifier operation For multiple humidifier groups the Ultra Series proportional control box is required Options include A Series Control System Diagram CONTROL POWER WIRES 48 VOLT SEE TABLE FOR NUMBER OF WIRES STRAINER RECOMMENDED SHUT OFF TO DRAIN include Air Gap CONTROL BOX INDOOR USE ONLY TO REMOTE 24 VOLT SHUTDOWN 2 WIRE OPEN FOR SHUTDOWN TO HUMIDITY HI LIMIT SENSOR 3 WIRE ON OFF OPTION TO HUMIDITY SENSOR 2 WIRE ON OFF STANDARD TO POWER SOURCE OR D I GRADE PVC STAINLESS STEEL RECOMMENDED CONDUCTIMETER SHUT OFF PROBE 3 4 ol ee OPTIONAL D I BOTTLE ae WATER SUPPLY STUILZ A Series Control On Off A Series On Off control boxes are provided for a single humidifier per system The A Series On Off control systems are supplied as standard with Wall mount enclosure Rotary main power disconnect On Off switch Component circuit protection 48 VDC power supply Humidifier contactor Conductivity circuit board Water quality indicator lights On Off control humidistat specify as wall or duct mount ship loose Water q
12. SNMP V1 V2c e Air pressure proving switch Ships loose e Air velocity sensor e On Off high limit humidistat specify as wall or duct mount Ships loose e High RH limit sensor Ships loose e Water leak detector Condensate pan detector The Ultra Series controller is capable of controlling up to 16 STULZ Ultrasonic Humidifiers per system The control output is fully proportional from 096 to 10096 call for humidification Through pulse width modulation all humidifiers are switched on and off as segments of approximately one second simultaneously dependant on the level of the control Input 1 and high limit Input 2 when used inputs A run hour meter is provided as standard function of the Ultra Series controller to provide a sum total of time segments the humidifiers have operated In conjunction with the built in drain solenoid valves the controller will drain the tank based on humidifier idle time If a freeze alert condition exists an automatic drain will initiate to protect the tank from freezing Information displayed during normal operation includes e Controller enabled via remote on off e General humidity production range 0 100 e Room or return duct humidity level when control sensor is used Control signal level when BMS control is used Humidity set point when control sensor is used Current alarm conditions Humidifier drain solenoid valve energized Humidifier fill solenoid valve energized Air velocity in duct i
13. When the mineral removal capacity of the resin has been exhausted the bottles are exchanged out with bottles containing new or regenerated resin as part of a service interval DI regeneration is a common service available in most areas Contact your local STULZ representative for a list of water service companies in your area Reverse Osmosis Reverse Osmosis RO is a crossflow membrane separation process RO removes virtually all organic compounds and 90 to 99 percent of all ions RO rejects 99 9 percent of viruses bacteria and pyrogens Pressure on the order of 200 to 1 000 psig 13 8 to 68 9 bar is the driving force of the RO purification process Complete RO systems are made up of multiple components RO DI systems include as standard e Carbon dechlorinator e Sediment filter e Softener e plant RO water storage e Repressurization for atmospheric storage only e DI polishing Resilite water purity monitoring Ultraviolet UV sterilization Water Purity The demineralized water specified for use in STULZ Ultrasonic Humidifiers has conductivity less than 5 microsiemens resistivity greater than 200 000 ohms See the STULZ Water Treatment Technical Documentation CD for conversions between all common expressions of water purity Water purity conductance monitoring is standard with all STULZ Ultrasonic control boxes Water Piping Demineralized water piping is to be of non corrosive material either p
14. electrical energy and water usage and due to reduced compressor operating hours payback periods of less than one year are common Energy Analysis A STULZ Ultrasonic Humidifier needs only 796 of the power required by an electrode steam humidifier Assuming a humidification requirement or 20 Ibs hr a DAH 16 has a power requirement of 0 495 kW at 21 1 Ibs hr Using a comparable capacity steam electrode type humidifier the power requirement is 6 8 kW at 20 Ibs hr which is an energy savings of approximately 93 In a typical application the yearly humidification requirement is approximately 2500 3000 hrs At a 0 08 per KWH utility rate Ultrasonic yearly power requirement Yearly electrical energy cost Cc 3 D D 0 Oz D D per ied o 2 o Q E 3 5 et Yearly electrical energy savings 3 000 hrs x 0 495 kW 1 485 kWH 1 485 x 0 08 KWH 118 80 3 000 hrs x 6 8 kW 20 400 kWH 20 400 kWH x 0 08 KWH 1 032 1 513 20 STUILZ _STULZ Ultrasonic Humidifiers DAH Series From 5 3 to 39 6 lb hr amp Up DRH Series Duct Mounted and Rack Mounted From 4 4 to 17 6 lb hr amp Up In Air Handling Units Stand Alone Wall or Shelf Mounted Multiple humidifiers per control zone typical for all Ultrasonic Humidifier Model Nomenclature 04 5 DAH DUCTED AIR HUMIDIFIER 1
15. the air stream ductwork or rack mounted within the AHU itself General Application Parameters For All Types of STULZ Ultrasonic Humidifiers Humidifier must be installed in a level horizontal position The operating air temperature range of humidifier is 34 F to 122 F The operating air relative humidity range of humidifier is 9096 Water pressure operating range at the inlet of humidifier is 30 psi to 75 psi Inlet water temperature operating range is 40 F to 104 F For dust free humidifier mist generation inlet water is to be demineralized by mixed cation anion resin bed deionization to a water conductance of 5 microsiemens purity DI water supply piping must be non corrosive i e stainless steel or plastic rated for use with de ionized water Check building code requirements Humidifier overflow drain pipe is to be directed to condensate pan or drain Humidifier capacity rated at 48 VDC power supply via factory furnished control box Allowable voltage range at humidifier 46 VDC to 51 VDC Humidifier power source must be isolated with a circuit breaker Multiple humidifiers can be supplied and controlled by a single control box for larger capacity systems Refer to Control Section for information regarding maximum quantity of humidifiers possible per system based on options selected and system wiring requirements To minimize voltage drop wire gauge between control box and humidifier is dependent on model
16. the ultrasonic humidifier shall range from 1 65 to 1 75 MHz Nominal main power voltage to the control box shall be specified as 115 1 60 208 1 60 460 3 60 depending on number of humidifiers in the system and available power supply Humidifier units shall operate from the control box with a nominal voltage of 48 VDC Capacity output shall be 10096 at 48 VDC supplied to the transducer The ultrasonic humidifier shall have the capability to provide instant on and instant off operation for precise room humidity control Deionized water must be supplied to the ultrasonic humidifier in order to prevent any airborne mineral contaminants from being deposited into the room or air stream The conductance of the deionized water shall be less than 5 microsiemens purity Options Booster fan for use in low velocity air streams model DAH only AHU system vertical mounting rack model DAH only e Wall mounting brackets designed for stand alone model DRH Code Conformance The humidifier unit shall be a UL recognized component The supplied system shall be certified as meeting the following EMI compliance requirements EN 5501 EN 61000 3 3 EN61000 3 3 EN61000 6 1 STULZ Humidifier Control All STULZ Ultrasonic Humidifiers require a UL Listed control box for each system providing power component electrical protection humidifier operation and alarm indication Two types of control boxes are offered A Series On
17. 6 DRH 16 505 N 2 o UJ 5 zai ae AJo UJ NOTE Table reflects correct electrical wire sizing from the control box to the humidifiers for three different distances All wire sizes are listed for stranded wire either THHN or NTW only No solid wire is to be used 75 ft maximum distance In addition to the above wires humidifiers controlled by the Ultra Series Controller require a 3 conductor shielded 22 AWG cable daisy chained from the control with a termination resister installed on the last humidifier do not exceed 1000 feet total distance for this 3 conductor cable 21 M pue Wa SAS s o41u0 seuies enn sjo3u0 5 25 Ultra Series Control Se Model Humidifiers Per m Control Box H 04 0 H 04 H 04 H 04 H 04 H 04 H 04 H 04 H 08 H 08 H 08 H 08 H 12 H 12 H 12 H 12 H 16 H 16 H 16 H 16 H 24 DAH 24 DAH 24 AH 24 with BF 24 with BF 24 with BF 24 with BF 24 DAH 30 DAH 30 DAH 30 DAH 30 with BF 30 with BF 30 with BF 30 with BF 30 H 04 H 04 DRH 04 DRH 04 DRH 04 DRH 04 DRH 04 DRH 04 DRH 06 DR DRH 06 DRH 06 DRH 06 H 06 H 06 H 06 DRH 08 DRH 08 DRH 08 DRH 08 DRH 16 DRH 16 DRH 16 gt gt gt 15 Controls Electrical Data Dae 01 2 DAH whera witherza 2 wither2a
18. Humidifier models include integrated circulating fans to insure correct operating terminal velocities Care must be taken to insure the inlet or outlet sections are not obstructed Locate the DRH model to allow unrestricted path for absorption of mist onto the space ft ft ft min ft min oF Ibs hr 300 600 ft min 450 750 ft min Outlet air temperature from the humidifiers Total system humidification 1054 CFM 1 08 F Is a Booster Fan Being Provided for Low Terminal Velocity Application under 450 ft min Is there a minimum of 8 in of clearance between top of humidifiers and top of air handler ductwork Is there a minimum 4 in of clearance from bottom of air handler ductwork and bottom of humidifiers Is there a minimum of 4 in from connection side of the humidifiers and air handler duct work Is there a minimum of 8 in from the right side non connection side of the humidifier and the air handler ductwork STULZ suoneJepisuo uondaosqy A ipiunH 15 Stand Alone amp Direct Room DRH Series Application Parameters 16 DRH Series Stand Alone Ultrasonic Humidifiers The DRH Series STULZ Ultrasonic Humidifiers are designed for stand alone direct room applications DRH humidifiers are typically mounted on a wall column or suspended below the ceiling serving such applications as printing houses lithographic printing processes bakeries dair ies telephone exchanges
19. acement in Air Handling Units 14 Humidity Absorption Considerations 15 Direct Room Application Type DRH DRH Series Application 16 DRH Series Technical Data amp 17 Placemernti esos a KE eaa aa a Aa a aa naa a aa eka gag a ag 17 Guide Specs General Guide Specs for All STULZ Ultrasonic Humidifiers 18 Guide Specs for Control 27 28 Control Boxes A Series ON OFF Control for Single Humidifier 19 Ultra Series Proportional Control for Single or Multiple Humidifiers 20 24 Wire sizing and electrical 2 25 26 Controls Guide 5 2 eene 27 Water Treatment Demineralization Principles of Demineralization 29 Mixed Bed Deionization DI Only for Small 30 Demi Cabinet Deionization for Small Capacity 30 Reverse Osmosis RO DI Systems for Large Capacity 30 Hydropneumatic Pressurized vs Atmospheric Re Pressurized Water 30 Demi Cabinet Dimensions ssssssssssssee
20. ation but can not due to its mass inertia A momentary vacuum and strong compression are produced in the water In the negative oscillation of the transducer the momentary vacuum causes the water to cavitate into a vapor at low temperature and pressure In the positive oscillation of the transducer high pressure compression waves are produced and by focusing the pressure waves on the surface of the water very tiny droplets average one micron in diameter of water are generated and are quickly absorbed into the air stream WATER FINGER AIR FLOW PIEZO ELECTRIC WATER LEVEL TRANSDUCER ge DISCONNECT OSCILLATOR 1 65Mhz SOLID STATE RELAY STULZ Ultrasonic Advantages Maximum Energy Savings Compared to Electrode Boiler or Infrared humidifiers the STULZ Ultrasonic Humidifiers require 93 less electrical energy Lowest Electrical Wiring Costs As the STULZ Ultrasonic Humidifier only requires 7 of the electrical power required for conventional systems significant savings can be realized in the cost of wiring electrical distribution boards standby generation and even the main input transformer to the building Reduced Air Conditioning Requirements The STULZ Ultrasonic Humidifier is an adiabatic constant enthalpy humidifying process which reduces air temperature during the process a
21. d with Wall mount enclosure Rotary main power disconnect with lockout feature Component circuit protection 48 VDC power supply one per humidifier Proportional output control Microprocessor control board and backlit panel display user interface Password protected menus Weekly timer and night setback function Remote start stop Dry contact for remote indication of shut down alarms Time stamping event log for 100 events Water conductivity probe Ships loose 4 20mA proportional humidity control sensor specify as wall or duct mount Ships loose Cabinet thermostat controlled fan e Proportional Integral P I control The controller can accept the following proportional control signals from a Building Management System in lieu of the factory furnished sensor Input 1 0 5 VDC 0 1 VDC 0 20 mA 4 20 mA Standard 0 10 VDC with converter Standard STULZ The controller can accept the following proportional high limit signals from a Building Management System in lieu of the factory furnished sensor Input 2 0 5 VDC 0 1 VDC 0 20 mA 4 20 mA Standard 0 10 VDC with converter Standard Options include e Audible alarm Averaging control board for 2 4 sensors Temperature compensated control Capacity Assist control for groups of humidifiers Duct Proximity control for multiple humidifiers Serial port for remote BMS communication and control over ModBus RTU BACnet MS TP BACnet over ethernet BACnet over IP HTTP
22. eam of humidifiers may alleviate potential for impingement on duct surfaces An access door in the duct or AHU should be provided adjacent to the humidifier for service The door may be furnished with viewing window to visually monitor operation of humidifier High humidity hi limit sensor is recommended to control humidity level in conditioned air and to reduce potential for oversaturating wetting Locate hi limit downstream of humidifier beyond the range of complete mist absorption A fan interlock or air proving device must be provided to ensure the humidifier will not operate when air flow is not present in air moving system STULZ sJ93euleJeg uone ijddy 59 Hva Duct amp Air Handling Unit Mounted DAH 04 thru 16 Power Connection Data Connections Water Supply 1 4 Tube Drain 1 8 NPT DAH TYPE UL Listed for Duct or Air Handling Unit Installation Humidifier Capacity Weight m 4 SEN S MNT id ETSI ERN E owe s owe 27 owe se o Come m Como ss m 20 ro va 202 Note Capacity based on terminal velocity and may vary DAH 24 amp DAH 30 Power Connection Data Connections Water Supply 1 4 Tube Drain 1 8 NPT DAH Series Technical Data amp Dimensional Drawings 10 STUILZ Duct amp Air Handling Unit Mounted ga e STULZ Ultrasonic DAH With Booster Fan BF Water Supply 1 4 Tube Data Con
23. eeneeeeennnen 31 DI Media Life Estimating sssssssssssseeeee e 31 Humidity Control Overview Why Humidify What Is Humidity Humidity is water vapor in the air Relative Humidity is the amount of water vapor in a given volume and temperature of air compared with the maximum amount of water vapor that volume of air can hold at that temperature saturation In a constant volume of air the amount of water vapor the air can hold increases as temperature increases 1 cubic foot is the most common measurement of volume Amount of water vapor is expressed in grains 1 cubic foot of air at 70 F holds 8 10 grains of water vapor 1 cubic foot of air at O F holds 0 48 grains of water vapor If 1 cubic foot of air at 70 F is holding 8 10 grains of water vapor then it is saturated and is at 100 relative humidity If 1 cubic foot of air at 70 F is holding 4 05 grains of water vapor then it is at 5096 relative humidity If 1 cubic foot of air at O F is holding 0 48 grains of water vapor saturated 70 F 100 RH 8 10 gr ft and is then heated to 70 F the grains of water vapor remain constant and the relative humidity is 696 Why Humidify Today s high tech environments require meticulous control of humidity to eliminate static electricity ensure quality manufacturing processes preserve precious documents and works of art and provide comfort while adhering to Indoor Air Quality standards The specific reas
24. endent on latent removal of HVAC system or process and should be calculated for year round use A cubic ft of mixed bed DI media X 10 000 grains TDS B grains TDS removal capacity B grains C grains per gallon TDS D gallons of pure water capacity D gallons X 8 3 Ibs gallon lbs of pure water capacity 165 F Ibs hr humidifier cap hours of full load humidifier operation capacity hours full load humidifier operation G service intervals per season Application of Reverse Osmosis RO system as a pretreatment to DI provides approximately 10 times the bottle life of DI only based on average RO mineral removal capacity of 9096 Minimum once per year service interval recommended for all water treatment systems STUILZ INIA uOISU s eAJ93U 92IAJ9S pue s 31 Production Facilities U S A e Germany Italy e China India STULZ mission is to be the premier provider of energy efficient temperature and humidity control solutions for mission critical applications STUILZ STULZ Air Technology Systems Inc 1572 Tilco Drive Frederick Maryland 21704 Phone 301 620 2033 Fax 301 662 5487 E mail info stulz ats com www STULZ com ISO 9001 Quality Management System Requirements B O Aug 2013 QEUU004A Specifications subject to change without notice
25. endent on the installation and control system applied DAH Application Data System CFM Duct Cross section HXW Humidifier Model Number of Humidifiers in airstream Humidifier Cross section total Terminal Area Duct cross section Total humidifier cross section Duct Velocity CFM Duct cross section Terminal Velocity CFM Airstream Cross Section Inlet air temperature to the humidifiers Total system humidification The absorption distance is the distance downstream of the humidifier s that is required to insure the suspended water droplets are fully converted to vapor and therefore will not cause wetting on downstream obstructions The inlet air conditions to the humidifier must be dry enough to fully absorb the maximum humidifier capacity without saturating the air further than 8096 R H A leaving relative humidity higher than 8096 saturated may lead to wetting of surfaces There are several factors the affect the absorption distance of a given application to insure full absorption into the air stream the air flow velocity air temperature air moisture content and humidifier capacity must be reviewed and confirmed The table below may be used to assess DAH applications For DAH ducted mounted models the air velocity at the humidifier also referred to as terminal velocity must be within the range of 450 750 fpm This velocity range insures that the humidifier s output capacity can be achieved The DRH Direct Room
26. erating on the principle of piezoelectric nebulization The humidifier system will be comprised of humidifier unit and control box Proportional control via variable input sensing device or external signal to the control box shall provide the primary humidifier control The humidifier components shall be built to the highest engineering and manufacturing standards and shall be completely factory tested before shipment The humidifier shall be described in the following specification and shall be manufactured by STULZ The main components of the STULZ Ultrasonic Humidifier unit shall be a water supply module one or more nebulizing modules with piezoelectric converter transducer corresponding transducer printed circuit control board print plate and fitted nebula distribution device cover The casing and distribution components shall be made of high quality stainless steel The water supply shall be strained for particulates and limited by a pressure compensating flow regulator that utilizes a flexible orifice to supply a constant flow rate across the full range of inlet line pressures The water level in the unit shall be maintained by a solenoid valve This valve is automatically controlled by two floats One float senses high water level and the other senses low water level The second serves as dry running protection In the case of disruption of the water supply overheating or detection of high mineral content levels in feed water supply
27. f configured Room temperature if configured Duct temperature if configured All shut down alarms activate the standard summary alarm dry contact for possibility of remote indication Ultra Series Control Proportional Multiple Humidifier Grouping Ultra Series controllers can be configured to provide 2 Pulse Width Modulated PWM output signals for two groups of humidifiers The 2 groups can be configured in three different ways Standard Capacity Assist and Proximity Limitation m NI No More Than 16 Humidifiers Per Controller Group 2 Multiple Humidifier Grouping Standard Operation In standard operation both humidifier groups receive identi cal output signals and both humidifier groups function as one large group In proportional control the Ultrasonic humidifiers require 48 volts DC and commands from the Ultra Series Controller Communications is via an RS 485 interface daisy chained from the Ultra Series Controller through each humidifier The last humidifier on the daisy chain requires a termination resistor included with the Ultra Series Control Box Up to 16 ultrasonic humidifiers can be placed on this daisy chain The wiring is to be done with a three conductor 22 AWG shielded cable and cannot exceed 1000 feet Power to the humidifiers is supplied by the Control Box and Auxiliary Boxes The size of the humidifier controls the size of the po
28. for DI water distribution The RO process water is stored in a hydropneumatic tank Control of the RO plant is via pressure switch on distribution side set at 30 psi On and 50 psi Off Pressurized storage systems are designed for localized applications with DI water distribution losses of less than 20 feet of head Pressurized storage minimizes water system floor space and cost B Atmospheric storage utilizes a large volume non pressurized tank and an independent pump to repressurize the water for distribution A float assembly integral to the storage tank controls the On Off operation of the RO plant The standard repressurization assembly is a 1 HP pump mounted on a pressure tank to minimize pump cycling and will deliver up to 15 GPM at 50 psi Atmospheric storage systems are designed for remote applications with DI water distribution losses of more than 20 feet of head If higher flows and or system losses are required than standard please contact your local STULZ representative for special repressurization pump selection Standard RO DI systems ship with individual components loose for installation and application of intermediate water piping in the field RO DI Systems Options Skid mounting provides all system components except atmospheric storage tank and salt brine storage on a corrosion resistant coated steel base with all intermediate water piping installed Brine tank and atmospheric tank ship loose Single
29. h steel cabinet with a lockable hinged access door A water shut off valve is factory pre piped in the supply side piping to the DI bottles A factory installed conductivity sensor includes a 10 ft cable for connection to the STULZ Ultrasonic control box for monitoring the water purity of the DI process supply Water inlet and outlet connections are made available from the outside of the DI cabinet The Demi Cabinet does not require a utility drain connection STULZ Demi Cabinet systems are available in the following sizes DI 05 Two 5 cubic ft bottles 10 000 grains TDS capacity DI 1 0 Two 1 0 cubic ft bottles 20 000 grains TDS capacity DI 1 5 Two 1 5 cubic ft bottles 30 000 grains TDS capacity DI 2 2 Two 2 2 cubic ft bottles 44 000 grains TDS capacity Reverse Osmosis RO DI Systems for Large Capacity For total humidifier capacities greater than 50 Ib hr or for applications requiring increased service frequency due to hours of operation and or poor raw water quality RO with DI polishing is applied There are two types of complete systems offered and defined by method of water storage and product water pressurization STUILZ Hydropneumatic Pressurized vs Atmospheric Re Pressurized Water Storage When applying RO DI systems proper storage system pressurization must be selected A Pressurized storage utilizes the pressure generated by the RO plant within the system to provide
30. hat this same meeting room has one side exposed to the outside and medium traffic 1 1 5 air changes hr Use 1 5 The room size is 50 x 40 with a 9 ceiling Air volume 50 x 40 x 9 x 1 5 27 000 ft hr Humidification Load 3 866 0 234 grains 7000 grains lIb 14 Ibs hr Example 3 Economizer Cycle The economizer cycle is used to mix outside air and return air in varying amounts to reach a set mixed air temperature of usually 55 F HVAC systems using economizer cycles usually have a fixed minimum outside percentage eg 1096 when outside air reaches the coldest design temperature As outside air temperature increases more outside air is mixed with return air to reach the set mixed air temperature of 55 F Humidification load calculations must be performed at each temperature mixing ratio to find the maximum load However for the purpose of this example let us assume that maximum load will occur at 10096 outside air with a 55 F 40 RH outside air conditions 10 000cfm x 3 866 0 4 x 4 89 grains ft3 x 60 min hr 7000 grains lIb 163 7 Ibs hr STUILZ uone n je peo uone iipiung Advantages amp Energy Analysis Advantages amp Energy Analysis Principle of Operation A piezo electric transducer immersed in a water bed converts a high frequency electronic signal into a high frequency mechanical oscillation The water tries to follow the high frequency mechanical oscill
31. ification Isothermal type humidification systems use electricity Adiabatic type humidification systems use mechani or gas as an external heat source to change water to cal energy to generate water particles and or evaporate steam Energy consumed from an external energy source is water to from media Energy extracted from air stream is approximately 1 000 BTU Ib of moisture approximately 1 000 BTU Ib of moisture e Electrode Canister e Ultrasonic piezoelectric transducer Infrared High Pressure Water Nozzle Electric Resistance Direct Steam Injection Building Steam Steam to Steam Gas Fired Compressed Air Nozzle Centrifugal Atomizing sling type Evaporative Pad STUILZ Humidification Load Calculation The humidification load for a given space depends on the amount of outside air introduced to that space There are three different ways by which outside air can be introduced into a controlled space 1 Through mechanical ventilation such as make up air or exhaust air both of which are usually achieved through mechanical HVAC systems 2 Through natural ventilation such as with leaks through cracks usually found in the building structure or through the opening and closing of doors and windows On loose structures use 2 air changes per hour on medium use 1 1 5 air changes per hour on tight structures use 0 5 0 75 air changes per hour 3 Through the economizer cycle of an HVAC system wherever applicable
32. ification process Because of all these savings STULZ Ultrasonic humidifiers qualify for sizable rebates offered by utilities promoting energy efficiency Proudly Made in the USA STUILZ Table of Contents Introduction to STULZ and Ultrasonic 2 Table oT COMPS TS se saat aaa na aa En a a Na a E a aa a ba eaaa bate cesi aa Kan a aa pa ada 3 General Information What is E rnidity etie saa aote aa awan 4 WY HUMAY Z M 4 Isothermal vs Adiabatic 4 Load CalculatlGn c elt Dt tnde c te ctae nabi 5 STULZ Ultrasonic Humidifiers Principle OF Operation ado dedit Kae emus 6 Advantages P EE 6 Erieray Analysis iet 6 Family of Products Model Nomenclature 7 Optional Features Accessories een 8 Duct AHU Application Type DAH DAH Series Application Parameters 9 DAH Series Technical Data amp 10 BOOSTS EET p rr E E aga E 11 Back otn REM EL EL UE 11 Multiple Humidifier Wiring 12 Placement im DUCbWOIK sa ss sana ang ga ndane gaga gagana pa amah 13 Pl
33. ifying directly over work areas Install humidifier to discharge between work stations Minimum distance from nozzle discharge to seated personnel in front of humidifier is 16 feet Absorption distance varies with temperature and relative humidity of room air Conditioned space with greater than 5096 RH set point may require additional absorption distance STULZ Stand Alone amp Direct Room DRH Series Mist Guide Tubes 4 0 Mist Guide Cover Data Connections Drain Fan Casing 2X Mounting Foot Air Filters Units FI a SECRET CS UN Stand Alone i it Number of Dimensions UL Listed Stand Alone Humidifiers Capacity Weight Rated lbs hr Nebulizer omo se 20a 6 es rea ss 3 e rejana 9 DRH ROOM PLACEMENT DIAGRAM Power Connection Water Supply M Smoke 3 0 Min 4 i Ceiling Detector 12 Humidifier Path zi 163 88 q En 4 M m m m we j Racks N ja See Detail N pgr 813 8 m m m Mounting Bracket Detail STUILZ JedIUUD2 Sales HUG SUOISU9UII 17 Humidifier Guide Specifications Humidifier Guide Specs 18 General Specification The humidifier unit shall be of a self contained ultrasonic type op
34. ineralized water In order to provide clean mineral free humidification it is recommended that all STULZ Ultrasonic Humidifier systems incorporate water demineralization Principles of Demineralization There are two types of demineralization processes presented in this manual Mixed Bed Deionization DI and Reverse Osmosis RO RO systems defined in this manual include DI as a polishing step to achieve the specified water purity DEIONIZATION PROCESS POSITIVE IONS CATIONS Calcium Magnesium Sodium Potassium NEGATIVE IONS ANIONS Carbonates BiCarbonates Sulfates Chlorides Iron Nitrates Manganese Silica D I BOTTLE DIMENSIONS CAPACITY DIAMETER NOMINAL CUBIC FT A HEIGHT B OVERALL HEIGHT C Water Treatment Options Mixed Bed Deionization Mixed Bed Deionization DI is a method used for the removal of all ionized organic and inorganic minerals and salts from water using a concurrent ion exchange procedure The positively charged ions are removed by cation exchange resin in exchange for a chemically equivalent amount of hydrogen ions The negatively charged ions are removed by anion exchange for a chemically equivalent amount of hydroxide ions The hydrogen and hydroxide ions introduced in this process unite to form deionized water molecules See illustration left The mixed bed DI resin is housed in plastic bottles and has a nominal mineral removal capacity of 10 000 grains
35. l box and humidifier is dependent on model of humidifier and length of wire run Refer to Controls Section for proper selection Follow all local state and federal electrical and safety guidelines Application Parameters For Stand Alone direct in space Systems e The STULZ Ultrasonic Type DRH Ultrasonic Humidifier is designed to be installed directly in a room or conditioned space Humidifier must be installed in a level horizontal position When selecting the installation location attention should be paid to the air flow in the room so that the generated mist is not effected by HVAC system supply or return air terminal devices Locate humidifier to allow unrestricted path for absorption of mist into the room air Humidifier to be installed using brackets mounted to wall column or suspended from overhead structure by hanger rods Humidifier is designed to mount on top of brackets Install humidifier with mounting hardware and attachment rated for weight of humidifier Install so the air intake opening is not restricted and air filter is accessible for maintenance Minimum distance from nozzle discharge to ceiling is 18 inches Mount with sufficient space between humidifier and wall to allow for water and electrical connections Minimum distance from air terminal or smoke detector in front of humidifier is 12 feet To minimize mist blowing in the direction of personnel working in conditioned space avoid humid
36. lastic or stainless steel Refer to local codes and project requirements for selection of specific piping material and schedule uonezi e1eurujeg JO sejdi uug 3ueuneoJ 1936 29 Water Treatment Options Water Treatment Demineralization and Reverse Osmosis 30 Mixed Bed Deionization DI For Small Capacity For total humidifier capacities up to 50 lb hr and raw water quality of fewer than 10 grains per gallon mixed bed deionization may be used The raw untreated water is passed through one or two mixed bed DI bottles to obtain the required water quality for operating ultrasonic humidification systems The quantity and size of bottles are determined by total humidifier capacity seasonal hours of operation raw water quality and desired service intervals See DI Bottle Life Analysis Calculation on page 8 3 to determine if Dl only is sufficient Larger bottles and or two bottles in series can be used to increase total DI media capacity For critical DI only applications two bottles should be used in series with an intermediate water purity indicator to alert that service is required on first bottle worker prior to second bottle polisher being exhausted If the desired service intervals cannot be met with Dl only an RO DI system should be applied Demi Cabinet Deionization For Small Capacity The Demi Cabinet system consists of two DI bottles connected in series pre piped with flexible hoses and housed in a painted finis
37. lower housing Blower Humidifier Humidifier Rack Rack SECTION A A AHU Side Elevation Duct amp AHU Mounted Applications Humidity Absorption Distance Cooling Effect of Ultrasonic Humidification The principle of using ultrasonic nebulizing technology to generate moist air for the purpose of humidification involves no heating or boiling of water This lack of a heating process eliminates the main source of energy consumption Stulz Ultrasonic humidifiers transform electrical energy into mechanical energy through the use of a vibrating piezoelectric element which produces fine water particles The process of introducing this fine water mist into the air stream takes place under a constant enthalpy process which cools the air downstream of the humidifier This cooling is usually referred to as the latent heat of vaporization and is approximately equal to 970 btu lb of water vaporized at standard atmospheric conditions When energy is removed from the air stream the air temperature is cooled down by an approximate amount arrived at by using the following equation AT F Ibs hr x 970 cfm x 1 08 Absorption Distance It is critical that the humidified area be properly designed for the environment that will be produced Considerations will need to be applied to all portions of the space that can directly interact with the humidified area Successful implementation of most humidification systems is highly dep
38. nd reduces the air conditioning cooling load Most Economical Water Consumption Spray Humidifiers have a water loss of up to 7096 through mist elimination and standard steam generators or infrared humidifiers have a water loss of up to 20 for the flushing cycles STULZ Ultrasonic Humidifiers have no water loss e Clean Humidification Deionized DI water is used for cleaner mineral free humidification e Freeze Protection Auto drain for freeze protection e No Fire Risk Humidification is generated with no heating or boiling of water thus the risk of fire is minimized e Redundancy by Design Each humidification module transducer is independently wired thus if one fails redundancy is achieved through the other modules e Excellent Control Features The STULZ Ultrasonic Humidifier has an immediate response to the call for humidification and also switches off immediately preventing delay and overrun humidity cycles The STULZ Ultrasonic Humidifier is also available with proportional control utilizing return and hi limit sensors Very Fine Mist STULZ Ultrasonic Humidifiers produce a very fine mist of approximately 0 001 mm 1 micron average diameter which is quickly absorbed into the air stream Long Service Life All the main components of the STULZ Ultrasonic Humidifier are made from high quality stainless steel or ABS plastic Fast Payback Period Energy analysis calculations show that due to lower
39. nections Power Connection p pA IN 2 Drain 1 8 A E SN ae A NPT Optional Booster Fan for DAH 24 30 Use when air velocity is less than 300 fpm Air Volume Weight Dimensions Inches cw e a 235 eo 2s 132 3220 STULZ Ultrasonic Mounting Racks Single piece rack with single point water connection Modules available up to 5 tiers high Over 5 tiers require field coupling and additional water hookup 12 00 A Dimensions inches Min max Note Height in table includes adjustable legs at bottom standard Reduce height 1 0 with legs removed Stabilizer legs are available for mounting between top of the rack to ceiling of AHU duct next page SN SANAN NS IN S NN NY NS NAN SA IN NA 34 MPT Water Connection Model S ur Inches a jeuoIsuaWIG JEDIUYIS jeuondo seues HYG NAN mS LS STUILZ 11 Duct amp Air Handling Unit Mounted Legs Adjustable Stabilizer Legs Fr stabilize Optional adjustable legs are field installed at two Specify er es diagonal corners on top of the mounting rack to Length 4 stabilize the rack against the ceiling of the duct Specify p required length from top of rack with lower legs fully R extended to ceiling of duct m N
40. ng of humidifiers in cascade arrangement by others Do not locate one humidifier directly in front of another in direction of air stream A stainless steel drain pan should be installed in such a manner that it is directly under the humidifier and extends two feet downstream past discharge side of lowest humidifier A stainless steel duct section with drained panned bottom may also be used The pan is provided for incidental carryover and is not an active component of the humidifier system To minimize potential for moisture impingement when ideal air temperature humidity and velocity conditions are not met or are unknown it is recommended that the humidifiers be installed at least 10 12 feet upstream from any turns duct liner or obstructions in the ductwork absorption distance In cases where shorter absorption distances are desired due to space limitations consult factory or your local STULZ Representative for assistance The absorption distance is dependent on entering air velocity air turbulence and dry bulb wet bulb temperatures If duct design does not provide a distance allowing for full absorption a mist eliminator may be applied Laminar airflow throughout the humidification section should be provided for optimum operation Where turbulent air is expected in the humidification section use of field furnished perforated sheet metal serving as an equalizing grid or individual humidifier air deflectors applied upstr
41. of humidifier and length of wire run Refer to Controls Section for proper selection Follow all local state and federal electrical and safety guidelines Application Parameters For Ducted and Air Handling Unit AHU Systems The STULZ Ultrasonic Type DAH Ultrasonic Humidifier is designed to be installed directly in air distribution ductwork or AHU The DAH type humidifiers are intended to be used only in horizontal air moving systems Installation should allow for air flow around top bottom and both sides of humidifier Size the duct section housing the humidifier for air entering and downstream velocity of 300 to 600 fpm Terminal velocity at the humidifier should be designed for 450 750 fpm Refer to Table on next page for specific model cross sectional areas for calculation of terminal velocity Use of STULZ Ultrasonic Booster terminal velocities below 300 fpm Fan is recommended for Multiple humidifiers should be installed in vertical or side by side arrangement STULZ vertical stainless steel Rack Systems provide a single point water connection up to 5 humidifiers per single point connection A cascade arrangement may also be used i e the uppermost humidifier to be closest to the entering air stream See diagrams on following pages for recommended clearances Cascade arrangement provides reduced humidifier cross sectional area for each humidifier plane when calculating terminal velocity Provision for mounti
42. ons to humidify are as numerous as the applications but the purpose is common across the board to eliminate problems that can damage products ruin buildings or jeopardize health When RH reaches levels below 3596 static electricity may develop on surfaces and materials Static electricity is not only annoying it can wreak havoc on computers by burning microchips and wiping out memory cards Elimination of static electricity also greatly reduces the risk of solvent fires in the printing industry Commercial presses develop extraordinary amounts of electricity at the roller and ignite solvents in the ink wells If you have ever wiped your finger across your television screen you know that static electricity attracts dust This is a real problem in the plastics and films manufacturing process where dust can ruin a product and in the healthcare industry dust can jeopardize lives Indoor Air Quality affects man and machine and both operate best at optimum environmental conditions IBC and IEC standards are forcing manufacturers and building owners to adjust their management of air quality control If a building s main HVAC system does not have the capacity to maintain RH levels within a comfort zone of 4096 to 6096 then proper humidification can help reduce adverse effects of occupant discomfort bacteria growth viruses fungi mites allergic reactions respiratory infections chemical interactions and ozone production Isothermal vs Adiabatic Humid
43. ou reach your goals Precision Air Conditioning e Ultrasonic Humidifiers Ceiling amp Floor Mounted from 1 100 tons 4 4 39 6 lbs per hour Air Water Glycol Chilled Water Duct AHU Wall Mounted amp Stand alone Free Cooling Clean Energy Efficient Alternate Water Source Adiabatic Cooling ISO 9001 Quality Registered STULZ is committed to satisfying customer expectations by meeting and exceeding requirements Our Quality Policy ensures that every Employee is committed to Customer Satisfaction Teamwork and utilizing Continuous Process Improvement methods in order to deliver an exceptional product We will continually measure our performance to improve the effectiveness of our quality management system STULZ Ultrasonic Humidifiers STULZ has engineered and installed humidification systems all over the world With thousands of installations in Europe and Asia and the broadest customer base in North America ultrasonic humidification is second nature to us We offer the most comprehensive and complete product line in the industry and can match an ultrasonic humidifier to any application you might have STULZ Ultrasonic Humidifiers use 93 less electrical energy than electrode boilers or infrared humidifiers Water is not heated and wasted as with typical humidification flush cycles No heat is added to the conditioned space but instead a cooling effect that helps reduce compressor run time is achieved due to the ultrasonic adiabatic humid
44. pe The control box shall be equipped with a microprocessor based ultrasonic controller which shall be used to monitor operate and control the humidifier system The controller shall have an LCD interface mounted on the door of the control box optionally wall mounted to continuously display current conditions and allow the user to change parameters The control box shall operate the scheduled quantity of humidifiers The controller shall take into account the specific features of ultrasonic humidification and control all outputs to meet those specific requirements The microprocessor shall be capable of recording the humidity upstream and if provided for downstream of the humidifying process via sensors Alternatively the controller shall operate in response to external analog signals in lieu of closed system sensors The microprocessor shall be capable of monitoring water conductivity via a ship loose probe Proportional control is by pulse width modulation Upon receiving a call for humidification the microprocessor shall switch on the humidifiers for a time interval segment of one second which is dependent on the strength of the control signal The stronger the control signal the longer the interval Furthermore the maximum output of the humidifier can be set at 10096 or lower which further allows the user to customize the humidification output to meet the application requirements On Off A Series Controls
45. point power connection only available with skid mount option Combines all electric device RO plant repressurization pump when applicable water purity monitoring and UV sterilizer power connection in common junction distribution box Analog resistivity meter provides actual water purity measurement in addition to or in lieu of standard resistivity lamp DEMI Cabinet with 2 bottles CONDUCTIMETER PROBE SHUT OFF VALVE DEMI Cabinet DOOR amp LATCHES HAVE BEEN with REMOVED FOR CLARITY 2 0 5 ft bottles 2 1 0 ft bottles 2 1 5 ft bottles 2 2 2 ft bottles To calculate estimated DI bottle service intervals per season A total mixed bed DI media volume If worker polisher arrangement is used use volume of first bottle only For each cubic ft of mixed bed DI media 10 000 grains TDS Total Dissolved Solids removal capacity Raw water quality C must be known from utility company data or water lab test results Humidifier capacity F is total of all humidifiers served by water system H hours per season of full load humidifier operation Season depends on application and geographic location of installation Typically for HVAC systems utilizing an outside air component the season and hours of operation will be dependent primarily on percentage of and ambient conditions of outside air For full recirculation applications load and run hours will be primarily dep
46. rements The water quality specified for supply to STULZ Ultrasonic Humidifiers during normal operation is conductance of 5 microsiemens The humidifier controller monitors water quality via the probe installed in the demineralized water supply piping The controller will provide a visible alert when this water quality is not present by activating the pre alarm status indicator If water quality drops to conductance 20 microsiemens the controller will shut down humidifier operation and indicate via visible alert common summary alarm dry contact closure and audible alarm when option is provided The unit is equipped with a 10 foot long shielded control wire for the conductivity sensor The conductivity circuit is sensitive to electromagnetic interference so the control wiring should not be run near high voltage wires The length of the conductivity sensor control wiring should never exceed 25 feet STUILZ J euonJodoug seuieg enJn sj o33u0 21 Ultra Series Control Proportional Controls Ultra Series Configuration and Dimensional Data 22 Humidifier per Power Source Control Box Humidifier Model Number of Humidifiers Standard Control Box Trim Control Box Number of Control Boxes Number of Auxiliary Boxes Number of Control Boxes Number of Auxiliary Boxes Configurations 1 Phase 0 0 D H 04 5 8 DRH 06 9 12 13 16 1 2 3 4 5
47. s in the second group are turned off and the humidifiers in the first group return to proportional control Humidifier Duct Proximity Limitation The Proximity Limitation option serves to limit the humidity production of the group of humidifiers that may be near the ceiling or floor of an AHU or in another position in which condensation losses may be common In this case the limited humidifiers would be in Group A and the standard operation humidifiers would be in Group B By default both humidifier groups have identical output signals Stan dard mode HUMIDIFIER 1 HUMIDIFIER 2 HUMIDIFIER 3 HUMIDIFIER GROUPA HUMIDIFIER GROUP B HUMIDIFIER 4 HUMIDIFIER 5 Proximity Humidifier Grouping Control box size and type wall or floor mount are determined by the quantity of humidifiers per system See table that follows for control box sizes The 48 VDC humidifier electrical power wiring between humidifier and control box must be sized according to the model of humidifier and the distance between humidifier and control box See table on page 22 for wire gauge selection All wire sizes listed are for stranded wire either THHN or NTW No solid wire is to be used Insufficient electrical wire gauge will result in excessive voltage drop between control box and humidifier Distances of over 75 ft are not recommended Water quality mineral content is expressed in a variety of measu
48. sh Cycle Frequency Low Air Flow Weekly On Off Timer High Air Flow High Humidity Alarm Setpoint Control Enclosure High Temp Summary Alarm User Configurable Alarm High Temperature Low Humidity Alarm Setpoint Room Temperature If configured Duct Temperature If configured Air Velocity in Duct If configured Conductivity of Water Freeze Alarm if configured Outputs Summary Alarm User Configurable Alarm Cabinet Cooling Fan ModBus Communications to Humidifiers Inputs Possible input signals from control sensor or an external controller 0 5 VDC 4 20 mA 0 20 mA 0 1 VDC 0 10 VDC with optional converter Ultra Series Options e Serial port for remote BMS communication and control over pLAN ModBus RTU BACnet MS TP BACnet over ethernet BACnet over IP HTTP SNMP V1 V2c Duct or wall mount high limit analog humidity sensor e Duct or wall mount on off high limit humidistat e Air pressure fan proving switch e Return temperature humidity sensor dewpoint e Remote temperature humidity sensor for temperature humidity dewpoint limit Air velocity sensor transmitter e Water Leak Detector s STUNLZ Water Treatment Demineralization Raw water contains minerals When water is atomized any minerals present in the water will not evaporate and will drop out of the air as fine dust While ultrasonic humidifiers will operate with raw water there is a maintenance and IAQ benefit in the use of dem
49. telecommunications rooms electronics manufacturing wood and textile processing plus many more General Application Parameters For All Types STULZ Ultrasonic Humidifiers Humidifier must be installed in a level horizontal position The operating air temperature range of humidifier is 34 F to 122 F The operating air relative humidity range of humidifier is 9096 Water pressure operating range at the inlet of humidifier is 30 psi to 75 psi Inlet water temperature operating range is 40 F to 104 F For dust free humidifier mist generation inlet water is to be demineralized by mixed cation anion resin bed deionization to a water conductance of lt 5 microsiemens purity DI water supply piping must be non corrosive i e stainless steel or plastic rated for use with de ionized water Check building code requirements Humidifier overflow drain pipe is to be directed to condensate pan or drain Humidifier capacity rated at 48 VDC power supply via factory furnished control box Allowable voltage range at humidifier 46 to 51 VDC Humidifier power source must be isolated with a circuit breaker Multiple humidifiers can be supplied and controlled by a single control box for larger capacity systems Refer to Controls Section for information regarding maximum quantity of humidifiers possible per system based on options selected and system wiring requirements To minimize voltage drop wire gauge between contro
50. uality probe ship loose Remote shut down Cabinet thermostat controlled fan Remote shut down dry contacts for remote indication of water quality alarms On Off high limit humidistat specify as wall or duct mount ship loose Air pressure proving switch ship loose 18 00 J40 UO Seues y sjo 3u0 INDICATOR STU H F o LAMPS m OT 1 M POWER 27 00 30 40 OFF SWITCH T1 Unit weight 115 Ibs 19 Proportional Controls Ultra Series 20 Humidifier Control All STULZ Ultrasonic Humidifiers require a UL Listed control box for each system providing power component electrical protection hu midifier operation and alarm indication Two types of control boxes are offered A Series On Off and Ultra Series Proportional All control boxes have water quality monitoring as standard The water quality monitoring is provided to ensure clean mineral free mist production The control boxes are designed for indoor installation only Ultra Series Proportional Control Boxes The STULZ Ultra Series Proportional control boxes are provided for single or multiple humidifiers per system Each individual system is defined as the quantity of humidifiers controlled by one control input di The Ultra Series Proportional control systems are supplied as standar
51. wer supply it needs The Control Box and Auxiliary Boxes can hold as many as 8 power supplies for smaller humidifiers or 4 power supplies for larger humidifiers The Ultra Series Trim Control Box and Trim Auxiliary boxes can hold as many as 4 power supplies for smaller humidifiers or 2 power supplies for larger humidifiers The location of each box can be optimized to be near the humidifiers powered from the boxes as the control of the humidifiers is done completely with the RS 485 interface This minimizes wire runs from the boxes to the humidifiers reducing both length and wire size Each system must contain one Control Box and can have as many Auxiliary Boxes as needed Capacity Assist This feature can be used to maximize efficiency for conservation of energy and allow more precise control of humidity production at low demand The Capacity Assist option enables one group of humidifiers to proportionally handle the demand for humidification up to their maximum capacity If the output of the first group of humidifiers reaches 10096 capacity and they are unable to satisfy the demand the controller enables the second group of humidifiers to operate controlling their output proportionally while the first group continues to operate at 100 capacity As humidity conditions approach setpoint the controller scales back the proportional output control signal to the second group accordingly until they are no longer required At this point the humidifier
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