Humidifiers Latisys
Contents
1. 1 0 Introduction ccceeeeeeeeeeeeeeeeseenees 1 1 5 4 1 Preparation For Repairs ccccseeeeeees 5 7 1 1 eneral aniier 1 1 5 4 2 Re Assembing seeen 5 8 1 2 GUY E AATE ET EE 1 1 5 4 3 Replacing Transducer and Nebulizer 1 2 1 EEE E E A 1 1 Print Plate eee tteeeteeesniten 5 9 1 2 2 Safety SUMMALPY cceeeeeceeeeesteeeeeeeeseaes 1 1 5 4 4 Water Supply Solenoid Valve Float 1 3 Product Warranty ccccccccceeeceeeeeeeeeees 1 3 Switches ancl Erie Ci eur atG siete ian eee 5 4 5 FAN eevieecsestseine a niekina adsa iania 5 11 1 4 SPECIHICALIONS ensenis o i 1 4 1 5 Gener OSI g aces ag E E T 1 5 6 0 Product Support Group s scssscesee 6 1 1 6 Main Parts ea esate acceso 1 5 64 Technical SUpport sesscsccccssssseseescssssseseeseee 6 1 1 7 Parts Illustrations seeee a 1 6 6 2 Obtaining Warranty Parts socccccccccsssssseccceee 6 1 2 0 Installation ssssssssssssssssssssssssssssssette a fe SRE eee E 2 1 Receiving the Equipment eee 2 1 2 2 Site Prepatation aieri 2 1 Drawings ean 2 So a esse oa 2 3 Mounting Placement 0 cece 2 2 n Layout Drawing a punnais E a 2 4 Exit Pipe Adjustment eeeeeeeeeeeeeeeees 2 2 re Fea CArGui DIANANI paisaia ee 25 Supply and Overflow Piping 000 808 2 2 2 6 Main Power Control Wiring 00eeee 2 4 List of Figures 3 0 Trial Operation oiscecanccccsnc sciences esecnsiest 3 1 Figure1 Installation of Humidifier c cee2. SPA Ate ST ae a SL Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 1 5 General Design The BNU Ultrasonic humidifier directly atomizes water producing a fine mist and is equipped with a fan to deliver the mist into a room It is possible to adjust the atomization to maintain room conditions by changing the air volume Acomplete system consists of the humidifier to produce mist and a transformer optionally provided by SATS to supply power to the humidifier The humidifier incorporates ultrasonic nebulizer unit s to produce ultrasonic waves a fan to send out the mist and an automatic water supply mechanism to maintain the supply water at a constant level When conducting routine maintenance it is important to clean the air filter and water tank because it significantly affects the humidifying capacity and life of the ultrasonic nebulizers 1 6 Main Parts 1 6 1 Ultrasonic Nebulizer Unit 1 6 4 Fan s Modular sub assembly located in the bottom of the Blows the mist produced from the humidifier into the water tank incorporating a plate with amplifying circuitry conditioned space and a transducer The transducer oscillates at a high frequency producing ultrasonic waves which are 1 6 5 Air Filter directed to the water surface atomizing the water Filter for removing coarse dust from the air and prevent 1 6 2 Solenoid Valve and Float Switch ae water tank and interior from beco
3. the power supply to the unit J i January 2008 STULZ 1 5 ERTE Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 1 7 Parts Illustrations 1 7 1 Mist Generator 2 Control water tank cover 3 O ringfor watertank 4 Watertank Cd 5 Exitpipebase Cd 6 Exit pipe ooo Exit pipe grommet 8 Mist generator bottom 9 Float panel 13 Float switch gasket Transducers 20 Internal wiring 22 Ultrasonic nebulizer print plate 23 Water supply piping 24 Drainage hose Cid 25 Mist generator s mounting foot STULZ ae Air Technology Systems Inc January 2008 BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 1 7 2 Humidifier No _ NAMEOF PARTS 26 Enclosure Ha Water supply joint 30 Ovreflow pipe 31 Drain i 32 Fan i 33 Junctionbox 34 Junction box cover 35 Bushing 36 Terminal block 38 Enclosure cover 39 Air flow guide panel 40 Mist generator January 2008 STULZ r A Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 2 0 INSTALLATION 2 1 Receiving the Equipment Your Ultrasonic humidifier has been tested and inspected prior to shipment To ensure that your equipment has been received in excellent condition make a visual
4. 2 6 Main Power And Control Wiring For wiring refer to the electrical drawing supplied with your unit to determine the total number of interconnecting conductors required for your system and for the proper wire terminations For internal wiring of the humidifier see the Electrical Circuit Diagrams on page 7 2 NOTE Wiring terminations may become loose during transit of the equipment therefore verify all wiring terminations are secure prior to operation Verify that the main power supply coincides with the voltage phase and frequency information specified on the system nameplate The nameplate also provides the full load amps FLA the current that the unit will draw under full design load the minimum circuit ampacity MCA for wire sizing and the maximum fuse size MFS for circuit protection The power source must be provided with a circuit breaker for safety Ensure a ground is connected to the unit The humidifier is rated to operate with an input of 48VAC single phase To maintain warranty coverage never allow the humidifier input voltage to exceed 51 volts as damage will occur to the transducers and print plates WARNING On SATS supplied control boxes the 48 volt Hot wire will not be connected when the unit ships Depending on the incoming power supply voltage the taps on the secondary side of the transformer may be a higher voltage than labeled It is important that the taps be checked with a voltmeter to ensure the vo
5. 2 1 3 1 Initial Operation ccccceeeesseeeeeeeesseeeees 3 1 Figure 2 Locating the Humidifier 0 0c 0cc00 2 9 3 1 1 Initial Operation Checklist eee 3 1 Figure 3 Exit Pipe ccesscseccsescsessesetesseeeseees 2 2 3 1 2 Procedure For inital Operation 00 3 1 Figure 4 Compression Fitting Section View 2 3 ole ad et We UIE aactezeee teeter a Figure 5 Piping Connection ceceeeeeeeeeeees 2 3 4 0 OpEratiON secnccctiiccstenccscewcssenccceencesecneee 4 1 4 1 PRECAUTIONS usscesscstavsrennadestinothiestaectesveewcarts 4 1 4 2 Operation Procedure and Control 4 1 4 3 Steps for Long Term Shutdown 00 4 1 5 0 Maintenance Repairs sseee 5 1 5 1 Periodic General Maintenance 0 5 1 5 1 1 General araen cevedanensecs 5 1 5 2 Maintenance Items and Necessary Tools 5 2 5 2 1 Air Pulte foniatria rani 5 3 5 2 2 Water Tank Interior and Electrical Parts 5 3 5 3 Troubleshooting and Repair ceee 5 5 5 4 General Common Repairs Parts Replacement cccsccccccceeeeeeeeeeeeeees 5 7 January 2008 i STUILZ Saar aS Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 1 0 INTRODUCTION 1 1 General Recognized as a world leader Stulz Air Technology Systems Inc SATS ultrasonic humidifiers are designed and manufactured with the highest quality craftsmans
6. Site Preparation SATS ultrasonic humidifiers are designed with easy service access in mind Install the unit in a secure location where it cannot be tampered with and the power switch cannot be inadvertently turned off Allow access to the unit for routine operation servicing and for necessary maintenance Position the humidifier in such a way that the unit can be easily removed for future maintenance and inspection Refer to the installation drawing provided with your unit for the dimensions of the humidifier NOTE Working clearance requirements need to be established prior to mounting the unit Refer to local and national electrical codes Figure 1 Installation of Humidifier When selecting the installation location attention should be paid to the air flow in the room so that the atomized mist can be uniformly diffused throughout the room When itis installed above the air conditioner ensure mist isn t attracted toward the bottom of the humidifier If any obstacle exists in front of the atomized mist outlet the mist will be con densed on the obstacle to form water drop lets A 2 f Ceiling system Bracket system k J 2008 2 1 STULZ January ae Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual The humidifier must be installed horizontally and level Prepare hanging bolts for ceiling or brackets for wall see Figure 1 The distance
7. TYPE i NBil n l n Ultrasonic Nebulizer Unit NB 59S AC4BVAC 2 Viev4a Varistar 3 TP Thermostat 4 881 2NB Power Relay 4BVAC 2T 5 RY1 Auxiliary Water Relay 24VDC ja 6 FS Float Switch for Water Supply ON in down position T FS2 Float Switch for Low Water Level ON in up position 8 5V Solenoid Valve 4BVAC 9 CH Printed Circuit Board 10 FANI 2 FAN 4BVAC January 2008 STUILZ er eae een Air Technology Systems Inc Globally close to you Stulz ATS located in Frederick MD USA is part of The STULZ Group with headquarters in Hamburg Germany and production facilities world wide Our network of manufacturer s representatives and sales partners span the globe providing innovative solutions to your unique environmental control needs www stulz ats com Stulz Air Technology Systems Inc 1572 Tilco Drive Frederick Maryland 21704 Phone 301 620 2033 Fax 301 662 5487 Email info stulz ats com www stulz ats com eS ISO 9001 2001 Quality Registered 1 08 BNU Series Installation Operation amp Maintenance Specifications are subject to change without notice
8. from the humidifier to the ceiling should be a minimum of 18 and the distance to the wall 3 or more For the installation mounting base dimensions see Layout Drawing of Humidifier on page 7 1 Figure 2 Locating the Humidifier 3 0 Min Smoke Ceiling Detector 18 0 Min 12 Air b Humidifier Path Diffuser ba Support Bracket NOTE Humidity control can only be achieved in a sealed room or if the room has vapor barriers installed It is recommended that walls ceilings and floors be sealed to prevent migration of humidity 2 3 Mounting Placement SATS ultrasonic humidifiers are designed for mounting to a flat surface Ensure the base is capable of supporting the weight of the unit Weight estimates can be found on the installation drawing provided with your unit Secure the unit with fasteners field supplied by others so that it will not move during operation Ensure the front of the humidifier is not hanging out over the edge of the support bracket 2 4 Exit Pipe Adjustment The exit pipes are provided to direct mist out horizontally During initial operation adjust the exit pipes shown in Figure 3 to direct blown mist away from obstructions and towards the room Figure 3 Exit Pipe January 2008 2 2 STUILZ Saar aS Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Oper
9. inspection of the equipment immediately upon delivery Care fully remove the shipping container and all protective packaging Open the box and thoroughly inspect the unit for any signs of transit incurred damage If there is shipping damage it must be noted on the freight carrier s delivery forms BEFORE signing for the equipment Any freight claims MUST be done through the freight carrier SATS ships all equipment FOB factory SATS is not liable for any equipment damage while in transit SATS can assist in the claim filing process with the freight carrier Should any such damage be present notify the SATS Product Support Group prior to attempting any repairs Refer to Section 6 0 of this manual for instructions Check the equipment against the packing slip to see if the shipment is complete Report all discrepancies to the appropriate authority Contents of Package 1 Humidifier 2 Compression Fitting 1 4 3 Installation Operation and Maintenance manual Avoid dropping or jarring the unit to prevent damage to the internal parts The unit should always be stored in a dry location prior to installation A Data Package has been sent with your unit It contains this manual system drawings applicable MSDS s and other applicable instructions based on the configuration and options of your unit The data package has been placed in your unit in a clear plastic envelope These documents need to be kept with the unit for future reference 2 2
10. of Humidifier 2 7 0 94 1 17 MOUNTING HOLE Mode BNU2000 BNU3000 Opening for conduit 7 8 22 Water supply valve To be provided by user Water supply tube 1 4 6mm O D To be provided by user Filter Exit pipe PE Overflaw pipe 172 0 D 3 8 1 0 2 OOOO OOO OOOO OO Drain 1 2 0 D 3 8 1 D Fan ABVAC Mist generator ABS Mounting foot STAINLESS STEEL Junction box STAINLESS STEEL Enclosure cover STAINLESS STEEL Enclosure STAINLESS STEEL PART NAME SPEC TYPE 5 S gt Tees i I Sten Fr o MIST OUTLET 1 a GEA a eee ee ee A Ss oN os sy Se ld TISS NM AIR OUTLET gt gt T A EA cea ig T a ee ss l m ic a l i wo or N I Oi i a PY of f l i ieee ata 4 AIR INLET to a y E 5 as BNU4000 BNU6000 BNU8000 Dimension L inch mm 15 4 390 20 1 510 24 8 630 34 3 870 43 7 1110 Dimension P inch mm 14 6 370 19 3 490 24 0 610 33 5 850 42 9 1090 STLILZ Pees er Aaa a aa 2 Air Technology Systems Inc January 2008 BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 7 2 Electrical Circuit Diagrams BNB1000 BNB4000 Typical Wiring Diagram 48VAC 48VAC ITEM SYMBOL PART NAME SPEC
11. Be careful not to splash water onto the electrical parts 10 If the water tank interior is contaminated clean the interior of the tank and the surface of the transducers by wiping with a soft oil free cleaning cloth Photo 8 Note Be careful not to scratch the surface of the transducers 11 If any damage or scaling is present on the surface of a transducer replace it referring to Sect 5 4 3 on page 5 9 12 Remove the control water tank cover Photo 9 Inspect the inside of the control water tank and check the following points No parts are leaking and no water leakage from the solenoid valve joint No condensation No discoloration deformation or deterioration of printed circuit board No damage to electrical wires or cables 13 Remove the float panel and check for contamination of the float switches Manually operate the float switch arms to ensure they raise and lower smoothly Wipe and clean the float switches with a small brush Note Be careful not to remove the float portion from the stem 14 Remove the mist exit pipes from the exit pipe base re moved in step 9 15 Clean the mist exit pipes with clean water Note It is essential that the mist outlet and its surrounding area are free from foreign material Note Be careful not to damage the rubber ring on the exit pipes 16 If no defects are found through the above inspection re assemble by reversing the above procedure Note When assembling be
12. Humidifier is not level Visually check Air filter clogging Pull out the filter and Clean the filter visually check Mist supply is too Power supply system Supply voltage is high Check voltage at trans Modify the mist high former input and output output by adjusting terminals the supply voltage 2 If the cause can not be located through the above checking remove the mist exit pipes base and check the interior of the water tank No mist is Dust and foreign material are accumulated in Clean the interior of the water generated the water tank tank Amount of mist is Dust and foreign material are accumulated in Visually check the too low the water tank interior of the water tank Scale deposited on transducer surface Clean interior of water tank and replace the transducer Remarks The causes of failures marked can be prevented through periodic maintenance inspection See Section 5 1 Periodic General Maintenance J 2008 STUILZ tan ae Se Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 3 If the cause cannot be located through the above checking parts may faulty Check the interior of the mist generator No mist is Water suppl generated aid control system Oscillation control system Water supply system overflow ing Amount of mist is too low 4 Consumable parts No mist output or mi
13. Ultrasonic BNU Type Humidifier MODELS BNU2000 BNU3000 BNU4000 BNU6000 BNU8000 Installation Operation STLILZ amp Maintenance Manual TS Air Technology Systems Inc Notice This document contains information protected by copyright All rights are reserved The owner of the equipment for which this manual is written may photocopy the contents of this manual for internal use only No part of this docu ment may be photocopied reproduced or translated into another language for use by anyone other than the owner of the equipment for which this manual is written without the prior written consent of Stulz Air Technology Systems Inc SATS This document contains confidential and proprietary information of Stulz Air Technology Systems Inc Distributing or photocopying this document for external distribution is in direct violation of U S copyright laws and is strictly prohibited without the express written consent of SATS Unpublished rights reserved under the copyright laws of the United States and of other countries Other brands and tradenames are trademarks of their respective owners Copyright 2007 by Stulz Air Technology Systems Inc Printed in the United States of America Allrights reserved Stulz Air Technology Systems Inc 1572 Tilco Drive Frederick MD 21704 USA 01 08 BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual TABLE OF CONTENTS
14. at is important for protecting your equipment and performance Be especially careful to read and follow all cautions that apply to your applica tion Abold text WARNING safety alert appears with information that is important for protecting you from harm and the equipment from damage Pay very close attention to all warnings that apply to your application A safety alert symbol J accompanies a general WARNING or CAUTION safety statement A safety alert symbol accompanies an electrical shock hazard WARNING or CAUTION safety state ment 1 2 2 Safety Summary The following statements are general guidelines followed by warnings and cautions applicable through out the manual Prior to performing any installation operation mainte nance or troubleshooting procedure read and under stand all instructions recommendations and guide lines contained within this manual WARNING High voltage is used in the operation of this equipment Death on contact may result if personnel fail to observe safety precautions CAUTION This unit must be installed according to local and national electric codes CAUTION All maintenance and or repairs must be per formed by a qualified technician All personnel working on or near equipment should be familiar with hazards associated with electrical mainte nance CAUTION Always turn off the main power and unplug the unit before beginning work on the equipment NOTE Wiring termi
15. ation amp Maintenance Manual 2 5 Supply and Overflow Piping The humidifier will require a field installed water supply line and overflow line Refer to the piping diagram provided with your unit for details For the water supply use DI or RO water The water supply to the humidifier cannot be taken directly from the public water service pipe Untreated supply water will cause a problem in the room where white powder is produced after evaporation from calcium or magnesium dissolved in the water In cases where water quality especially residue from evaporation pH total hardness and water conductivity exceeds or is outside the range of standard routine maintenance intervals for keeping normal operation will be shorter than usual Also the operating life of the transducers and print plates will be significantly reduced CAUTION It is essential that DI or RO water be used as the supply water source to maintain warranty coverage The use of untreated water will VOID THE WARRANTY NOTE The water supply piping must be non corrosive stainless steel or poly tubing rated for use with de ionized water Prepare the water supply piping The water supply piping should be equipped with a water supply valve user provided at a place as close as possible to the humidifier The valve must be rated for use with DI water After the water supply valve is installed flushing should be done by supplying water see Section 3 0 Tr
16. be defective for a period of 24 months from date of shipment when a completed start up form has been submitted to Stulz Air Technology Systems Inc within 90 days from shipment In the event that a completed start up form is not received by Stulz Air Technology Systems Inc within 90 days from shipment the company s obligation will be for a period of 12 months from date of shipment Parts repaired or replaced under this warranty are shipped FOB Factory and warranted for the balance of the original warranty period or for 90 days from the date of installation whichever is greater Stulz Air Technology Systems Inc s warranty does not cover failures caused by improper installation abuse misuse misapplication improper or lack of maintenance negligence accident normal deterioration including wear and tear or the use of improper parts or improper repair Purchaser s remedies are limited to replacement or repair of non conforming materials in accordance with the written warranty This warranty does not include costs for transportation costs for removal or reinstallation of equipment or labor for repairs or replacement made in the field If any sample was shown to the buyer such sample was used merely to illustrate the general type and quality of the product and not to represent that the equipment would necessarily conform to the sample This is the only warranty given by the seller and such warranty is only given to buyers f
17. careful not to pinch the wires be tween the sheet metal January 2008 STLILZ ea eae een Air Technology Systems Inc 5 4 BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 5 3 Troubleshooting and Repair Should any failure occur make the necessary repairs referring to the following table As a rule power must be turned off when troubleshooting is performed but if it is absolutely necessary to troubleshoot when power is supplied special attention must be paid to avoid electric shock and short circuiting 1 First the humidifier and its surrounding area should be checked No mist is Power supply Power source switch Visually check switch Turn switch on generated system circuit breaker turned off position Humidistat set too low Raise the setpoint Humidistat is not on Faulty transformer Measure the voltage at Replace the transformer input and transformer output terminals Water supply system Water supply valve is Check opening closing of Open the valve closed the valve Thermo protector switch Check if ambient tempera Correct TP tripped due to ture and water temperature overheating are within specified range Amount of mist is Power ee oe system e voltage is low Check voltage at transformer Correct the too low input and output terminals voltage Water ata control el water level is Visually check See 3 on next system high and overflowing page
18. ce the heat sink and o ring Tighten the mounting screws securely taking care not to damage the o ring Photo 26 14 Referring to Sect 5 4 2 Re assembling on page 5 7 re assemble by reversing the above procedure 5 9 January 2008 STUILZ SPA Ate ST ae a SL Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 5 4 4 Water Supply Solenoid Valve Float Switches and Printed Circuit Board 1 Referring to Section 5 4 1 Preparation for Repairs on page 5 7 take the humidifier to a convenient place for working 2 Cut the band bundling the solenoid valve and float switch lead wires Photo 27 Note Be careful not to damage the lead wires 3 Remove the connecting wires of the parts to be replaced from the terminals on the printed circuit board Photo 28 Note Grasp the terminals when removing wires Never pull the lead wires 4 When the solenoid valve is replaced remove the pipe fitting from the inlet side of the solenoid valve Photo 29 5 Loosen the 2 screws holding the float panel and remove it with the solenoid valve and float switches Photo 30 6 Remove the solenoid valve mounting screw on the reverse side of the float panel and remove the solenoid valve Photo 31 7 Remove the elbow on the outlet side and install it on the outlet side of the new solenoid valve Be sure to seal the fittings with teflon tape Note Ensure the elbow is faci
19. cked and if no trouble is found the trial operation is completed 3 1 3 Purge the Water Line The first time the unit is operated metal shavings or debris that may form during the installation process will be flushed through the supply water piping After performing the steps in Section 3 1 2 above follow the steps below to purge the water line Set the main switch of the power source to OFF for safety Close the water supply valve Remove the water tank drain plug and drain the tank After draining securely install the plug J 2008 STUILZ i eaae aaa i Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 4 0 OPERATION 4 1 Precautions Do not remove the mist exit pipe base from the humidifier during operation Do not remove the air filter at the back of the humidifier during operation Do not block the mist outlet of the mist exit pipes It could cause a failure when the mist flow is reversed Drain the water from the water tank for sanitary reasons if the unit is turned off for more than 3 days 4 2 Operation Procedure and Control 1 2 3 4 ato 5 Open the water supply valve and supply water to the unit Check the setting of the humidistat and set it to a desired humidity level Turn on the main power switch circuit breaker suppying power to the humidifier When power is supplied to the humidifier water flows into the unit When the r
20. d wires 3 Remove the screws securing the fan to be replaced and install a new fan using the same mounting screws Photo 37 Ensure the new fan is facing the correct direction 4 Referring to Section 5 4 2 Re assembling on page 5 7 re assemble the humidifier 5 11 January 2008 STULZ eaae aaa i Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 6 0 PRODUCT SUPPORT GROUP SATS provides to its customers a Product Support Group PSG which not only provides technical support and parts but the following additional services as requested performance evaluations start up assis tance and training 6 1 Technical Support The SATS Product Support Group PSG is dedicated to the prompt reply and solution to any problem encountered with a unit Should a problem develop that cannot be resolved using this manual you may contact PSG at 240 529 1399 Monday through Friday from 8 00 a m to 5 00 p m EST If a problem occurs after business hours dial the page number 301 414 4514 and follow the steps below 1 Wait for the dial tone 2 Dial your telephone number including area code 3 Press the pound key 4 Wait for a busy signal 5 Hang up the telephone One of our service technicians will return your call When calling to obtain support it is vital to have the following information readily available information is found on unit s
21. de the filter up along the guides to remove it Photo 1 2 Wash the filter media with clean water 3 Lightly shake off excess water and dry it well in the shade 4 When the filter is dried slide it back in the guides 5 If the filter is seriously clogged and cannot be cleaned by washing with water or if it is seriously deteriorated it should be replaced with a new one 5 2 2 Water Tank Interior and Electrical Parts 1 Stop the humidifier set the power supply circuit breaker main switch to OFF and close the water supply valve 2 Remove the plug from the drain pipe and drain the water tank After draining re install the plug securely Photo 2 3 Remove the the water supply piping Be sure to use two wrenches to prevent the body of the compression fitting on the humidifier from turning Photo 3 4 Remove the junction box cover and the power cables from the terminal block Then remove the screws from the conduit plate 5 Take the humidifier to a convenient place for working 6 Remove the screws 4 Pcs holding the junction box and remove it Photo 4 7 Remove the screws holding the enclosure cover and remove it Photo 5 8 Remove the air flow guide panel Photo 6 5 3 January 2008 STLILZ ee i Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 9 Remove the exit pipe base and inspect the interior of the water tank Photo 7 Note
22. dy to operate by going through the following checklist prior to start up The humidifier is installed horizontally and level No obstacle is within 15 feet in front of the atomizing direction The electrical wiring is correctly connected De ionized or Revere Osmosis water supply is used The water supply piping and overflow piping are correctly connected and secured oar wn All parts are correctly installed After the above items are checked the trial operation may begin 3 1 2 Procedure for Initial Operation 1 Open the water supply valve allowing water to flow to the unit 2 Set the humidistat to a desired humidity level 3 Turn the main power source switch circuit breaker to ON 4 If the humidistat is ON power is supplied to the humidifier the water supply is started and when the required water level is reached atomizing starts 5 If the operation does not start increase the set point of the humidistat After operation is started check the following items on a regular basis Atomizing is visible through all the mist exit pipes Check the humidifier parts overflow pipe and other piping for signs of leaking water By operating the ON OFF contact of the humidistat ensure that it is interconnected properly and controls operation of the humidifier Check to see that the mist diffusion is good and that objects in the room or any obstacle is not directly exposed to the mist After the above items are che
23. e inspections together with the actions taken For assistance contact the SATS Product Support Group Ensure adherence to all safety precautions while performing any type of maintenance 5 1 1 General Before the maintenance inspection and repairs are done be sure to set the power supply circuit breaker main switch to OFF and close the water supply valve WARNING Turn off power to the unit unless you are performing tests that require power With power and controls energized the unit could begin operating automatically at any time CAUTION The transducer is a very delicate part When the water tank interior is cleaned special care must be taken to ensure the transducer is not scratched on the surface with a screwdriver etc Do not supply power to the ultrasonic nebulizer units while the transducer lead wires yellow and orange are removed Proper tools must be used Excessive tightening or insufficient tightening may cause failure When performing maintenance or repairs care must be taken to ensure small parts such as screws will not be lost Care must be taken avoid injury by sharp edges of the sheet metal etc Solid scaffolding must be provided for working in high places Testing insulation resistance and dielectric withstand voltage should be avoided because the humidifier incor porates sensitive electronic parts When parts are replaced genuine SATS parts must be used Contact SATS Product Support Group for assis
24. equired water level is reached mizing starts During operation stopping and restarting of the humidifier is controlled by means of the signal from the humi distat 6 The water level in the water tank is maintained by means of the float switch and solenoid valve 4 3 Steps for Long Term Shutdown When operation is stopped for a long time one week or longer the following steps must be performed Also refer to Section 5 1 Periodic General Maintenance Set the main switch circuit breaker from the power source to OFF Close the water supply valve Drain the water tank Check and clean the water tank interior and air filter For restarting operation after a long term shutdown see the previous Section 4 2 Operation Procedure and Control January 2008 4 1 STULZ ERTE Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 5 0 MAINTENANCE REPAIRS 5 1 Periodic General Maintenance Systematic preventive maintenance of the humidifier is recommended for optimum system performance Routine periodic maintenance should include but is not limited to the following Tightening electrical connections Cleaning inspecting the unit s components visually Checking the level of water and ensuring no leaks are present A system should be established to record any problems defects or deficiencies noted by operators and discov ered during maintenanc
25. hip using the finest materials available in the industry Your ultrasonic humidification system will provide years of trouble free service if installed and maintained in accordance with this manual Damage to the unit from improper installation operation or mainte nance is not covered by the warranty This manual contains information for installation operation maintenance troubleshooting and repair STUDY the instructions contained in this manual They must be followed to avoid difficulties Spare parts are available from SATS to ensure continuous opera tion Using substitute parts or bypassing electrical components in order to continue operation is not recommended and will VOID THE WARRANTY Due to technological advancements components are subject to change without notice SATS BNU Series Ultrasonic Humidifiers are de signed as stand alone direct room humidifiers Any use beyond this is deemed to be not intended SATS is not liable for any damage resulting from improper use The system is designed to be installed indoors unless otherwise noted on the equipment nameplate 1 2 Safety 1 2 1 General Stulz Air Technology Systems Inc uses NOTES along with CAUTION and WARNING symbols throughout this manual to draw your attention to important operational and safety information A bold text NOTE marks a short message in the information to alert you to an important detail A bold text CAUTION safety alert appears with information th
26. ial Operation This is a necessary step to prevent chips and oil in the piping from entering the humidifier Connect the water supply piping to the humidifier by means of a 1 4 stainless steel or poly tubing user pro vided Acompression fitting is provided see Figure 4 Use two adjustable wrenches to tighten the connection on the humidifier Tightening torque approximately 90 in Ibs Figure 4 Compression Fitting Section View Figure 5 Piping Connections Nut Body of Fitting Water supply valve 1 To be opened into the atmosphere Install an isolation valve in the supply water line for maintenance purposes If there is a risk that the water supply piping could freeze wrap the piping with insulating material Overflow piping must be provided from the water tank for safety should any failure or problem occur The overflow pipe stub approximately 1 2 outside diameter should be connected with tubing so that overflowing water can be directed into a drain pan or an appropriate place such as building drain The overflow tubing must be sloped downward and away from the unit and the end should not be plugged NOTE The drain plug in the bottom of the water tank should not be removed unless an optional drain down solenoid is supplied 2 3 January 2008 STUILZ SPA Ate ST ae a SL Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual
27. ic nebulizer unit or transducer may result CAUTION Never drop the humidifier or apply hard shock to it It may damage internal parts CAUTION Drain the water in the tank for sanitary rea sons when humidifier is turned is off for more than 3 days Ultrasonic Humidifier Model BNU2000 STUILZ aa Air Technology Systems Inc January 2008 BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 1 3 Product Warranty SATS offers a standard two year limited warranty as stated below VA O YY O OS lt F gt O O Se SD O gt YS oS SKE K O O O ODI gt gt O O Se SS O gt oS SKE K O O O DR SKC F O Q O O gt O gt O DIC gt K ky K O DSR SKE SD O Q O O gt O gt ODIO gt K ky K O O DR SKE F XK O O OKO AS O gt oS SKE K O O DR SKE SD O Q AS O gt O gt O DIC gt K o K O O DIC gt O NY x E 2 Year Standard Limited Warranty Stulz Air Technology Systems Inc warrants to the original buyer of its products thatthe goods are free from defects in material and workmanship Stulz Air Technology Systems Inc s obligation underthis warranty is to repair or replace atits option free of charge to the customer any part or parts which are determined by Stulz Air Technology Systems Inc to
28. ications Ultrasonic Humidifier BNU a ec u e e e e Ce fs fe fe Single phase 48VAC 50 60Hz i Electrical Characteristes O O Allowable voltage range Within 10 on primary side of transformer 51VAC max on secondary side Power source Rated power consumption W A 2 45 Nos of Ultrasonic nebulizer unit Le ee Parts to be provided by user Humidistat DI or RO supply water Water supply valve Water supply tubing 1 4 stainless steel or poly tubing rated for DI water Transformer Power source and wiring to Transformer Wire type 16AWG minimum rated 125V 176 F Notes 1 Calcium magnesium or other agents that may be contained in the supply water are atomized into the air together with the mist and may form white powders after the water has evaporated To avoid this always use DI or RO supply water 2 The nebulizing capacity of the transducer in the ultrasonic nebulizer unit decreases gradually with use It should usually be exchanged after about 10 000 to 15 000 hours of operation depending on water quality and suitable voltage although the unit may continue to run as long as it s effective capacity meets the particular requirements 3 To ensure full warranty coverage the input voltage to the humidifier must not exceed 51VAC If the voltage on the secondary side of the transformer exceeds 51VAC damage to the transducers and print plates will result J 2008 1 4 STULZ January
29. loat switch Clean the switch If operation is not re stored replace switch Water supply solenoid Overflowing occurs even Replace the valve is faulty after power is turned off solenoid valve Deterioration of transducer due to The life is about 10 000 to Replace the transducer 15 000 hours of humidifier operation If the humidifier is operated for a long time with a deteriorated transducer the nebulizer print plate may fail The transduc ers should be replaced using the estimated lifetime of 10 000 to 15 000 hours as the point of reference If the cause cannot be located through the above checking please contact SATS Product Support Group If the humidification system is supplied with a water conductivity meter control optional ensure the meter is operating properly and that the supply water is within the recommended guidelines for mineral content January 2008 5 6 STUILZ er eae een Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 5 4 Common Repairs Parts Replacement When parts are replaced the following sections 5 4 1 Prepara tion for Repairs and 5 4 2 Re assembling must be observed 5 4 1 Preparation for Repairs 1 Stop the humidifier set the power supply circuit breaker main switch to OFF and close the water supply valve 2 Remove the drain pipe plug and drain the water tank After draining re ins
30. ltage is within the proper range Select the secondary transformer tap that is the closest to 48 volts and connect the Hot wire Never exceed 51 volts as damage will occur to the transducers and print plates CAUTION It is important to note that if the control transformer is supplied with the equipment by SATS it is sized and selected based upon the expected load for the unit Do not connect any additional loads to the control transformer Connecting additional loads to the factory supplied control transformer may result in overloading of the transformer which will cause the transformer circuit breaker to trip 2 6 1 Humidistat The humidistat may be optionally provided by SATS It should be installed at a well ventilated place where changes in room humidity can be accurately sensed If customer provided the humidistat must be a normally open dry contact type which closes when the relative humidity drops to a user selected setpoint Refer to the electrical drawing for the voltage and current rating requirements for the contact When one humidistat is used to control multiple humidifiers relays should be provided so each humidifier has an independant contact January 2008 24 STULZ ERTE Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 3 0 TRIAL OPERATION 3 1 Initial Operation 3 1 1 Initial Operation Checklist For new installations ensure the unit is rea
31. ming Automatic water supply mechanism For maximum atomization it is essential that the water 1 6 6 Control Board level in the tank be constantly maintained Water level Contains relays and protective circuit devices used to suitable for atomizing is maintained by means of a control the operation of the unit solenoid valve and float switch When the water level in the tank falls below the designed level the float switch 1 6 7 Water Supply Valve contact turns ON and the solenoid valve opens to Tob ided b supply water to the tank When the correct water level To be provided by user is attained the float switch contact turns OFF closing This valve should be installed upstream from the the solenoid valve humidifier for service and maintenance The valve must be rated for use with DI water 1 6 3 Relay Board and Float Switch 1 6 8 Water Supply Tubing Automatic low water level shutdown mechanism To be provided by user Operating the humidifier when the water level inthe tank This connects the water supply to the water supply is below the top of the transducers will damage the compression fitting The tubing must be rated for use transducers and the circuitry in the ultrasonic nebulizer with DI water unit A float switch and a relay are used to prevent the humidifier from dry running If the water in the tank falls below a safe level for any reason the float switch contact turns off shutting off the relay thus cutting off
32. nameplate e Unit Model Number BNUXXXX e SATS Item Number 123456 e Unit Serial Number 1234567 e Description of Problem 6 2 Obtaining Warranty Parts Warranty inquires are to be made through the Product Support Group PSG at 240 529 1399 Monday through Friday from 8 00 a m to 5 00 p m EST A service technician at SATS will troubleshoot the system over the telephone with a field service techni cian to determine the defect of the part If it is deter mined that the part may be defective a replacement part will be sent UPS ground If the customer requests that warranty part s be sent by any other method than UPS ground the customer is responsible for the shipping charges If you do not have established credit with SATS you must provide a freight carrier account number A written or faxed purchase order is required on warranty parts and must be received prior to 12 00 p m for same day shipment The purchase order must contain the following items e Purchase Order Number e Date of Order e SATS Stated Part Price obtained from PSG e Customer Billing Address e Shipping Address e Customer s Telephone and Fax Numbers e Contact Name e Unit Model No Serial No amp SATS Item No The customer is responsible for the shipping cost incurred for shipping the defective part s back to SATS Return of defective part s must be within 30 days at which time an evaluation of the part s is conducted and if the part is fo
33. nations may become loose during transit of the equipment therefore verify all wir ing terminations are secure prior to operation NOTE Do not attempt to make repairs without the proper tools January 2008 STUILZ E aS Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual NOTE SATS offers no warranty protection on humidifcation systems using controls that are not provided by SATS CAUTION It is essential that De ionized DI or Reverse Osmosis RO water be used as the supply water source to maintain full warranty cover age The use of untreated water will VOID THE WARRANTY CAUTION Use only non corrosive stainless steel or poly tubing rated for use with DI water to supply the humidifier CAUTION Never block the mist outlet or the opening of the air inlet The humidifier may be filled with the condensed mist and electrical shorts may result CAUTION Observe the unit for water leakage A short circuit could occur if the humidifier is splashed with water while operating CAUTION Never attempt to remove the mist guide cover and or the mist blow tubes while the humidifier is operating or electrical shorts may result CAUTION If there is a risk of supply water freezing pipe insulation should be provided CAUTION Never apply power when the humidifier is overturned or upside down Damage to the ultrason
34. ng the correct direction 8 Install the new solenoid valve to the float panel and re install the pipe fitting Note Ensure the o ring is not damaged If it is damaged replace it with anew one January 2008 5 10 STUILZ ear eae een Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 9 To replace the float switch remove the nut securing the float switch and replace the switch with a new one Photo 32 Note Since there are two types of float switches one type for the water supply and one type for low water level the type must be checked when the float switch is replaced Photo 33 Type for water supply FS1 Type for low water level FS2 10 To replace the printed circuit board remove the bottom of the mist For low level For water supply generator and remove all the lead wires connected to the bottom of the board Photo 34 11 Slide the printed circuit board out along the guides remove it and install a new one Photo 35 anat 12 Referring to Section 5 4 2 Re assembling on page 5 7 assemble Stopper by reversing the above procedure Stem 5 4 5 Fan s 1 Referring to Section 5 4 1 Preparation for Repairs on page 5 7 take the humidifier to a convenient place for working 2 Remove the fan lead wires from the terminals on the printed circuit board Photo 36 Note Grasp the terminals when removing wires Never pull the lea
35. no water leakage by pouring water into the tank 2 When re assembling after replacing parts inspect the interior and check the following points All the screws must be securely tightened All the lead wires must be correctly and securely connected Special attention should be paid to the fan lead wires All the plates boards and relays must be free from discoloration deformation and deterioration Electrical wires must not be damaged Mist generator must be properly secured 3 After re assembly is completed supply water and power and operate the unit Check to see that normal nebulizing mist is visible from all the mist exit pipes and that there is no water leakage January 2008 STULZ 5 8 er eae een Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 5 4 3 Replacing the Transducer and Nebulizer Print Plate 1 Referring to Section 5 4 1 Preparation for Repairs on page 5 7 take the water tank to a convenient place for working 2 Turn the mist generator upside down Remove the screws holding the bottom and remove it Photo 21 3 When replacing the transducer remove the two transducer lead wires yellow and orange from the nebulizer print plate Photo 22 Note Grasp the terminals when removing wires Never pull the lead wires 4 Using a phillips screwdriver remove the transducer mounting screws 2 Pcs and remove the transduce
36. or commercial or industrial purposes This warranty is not enforceable until the invoice s is paid in full THE FOREGOING SHALL CONSTITUTE SATS S ENTIRE LIABILITY AND YOUR EXCLUSIVE REMEDY INNOEVENT SHALL SATS BE LIABLE FOR ANY DIRECT INDIRECT SPECIAL INCIDENTAL CONSEQUENTIAL OR EXEMPLARY DAMAGES INCLUDING LOST PROFITS EVEN IF ADVISED OF THE POSSIBILITY THEREOF ARISING IN ANY WAY OUT OF THE INSTALLATION USE OR MAINTENANCE OF THE EQUIPMENT THIS WARRANTY IS IN LIEU OF ALL OTHER WARRANTIES EXPRESS OR IMPLIED INCLUDING WARRANTIES OF MERCHANTABILITY OR FITNESS FORA PARTICULAR PURPOSE gt SIRO OR om O O DIO OQR DIKO O K D O O CIRO DQR OKO pt O O O CIRO DIKO ii O ORO O O O O XXL OQR O O O O OKO ii LY iti O QXL DQR DIKO XK O W K O L DQR DIKO O DIR DQR DIKO O XK O O K O DIO DQR DIKO D W QXL DQR DIKO K O XK O OKO O O OKO o N2 Q O LY Conditions for Maintaining Warranty Coverage 1 De ionized DI or Reverse Osmosis RO water is used as the supply water for the humidifier 2 SATS provided controls are used with the humidification system 3 Input voltage to the humidifier does not exceed 51VAC January 2008 STUILZ Saar aS Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 1 4 Specif
37. r spacer and o ring Save the screws to mount the new part Photo 23 5 Clean the spacer o ring groove and o ring 6 Assemble the new transducer with the spacer and o ring and install them with the saved mounting screws Photo 24 Notes Ensure the o ring is not damaged If it is damaged replace it with anew one Carefully align the transducer s rubber packing in the indent in the bottom of the water tank to prevent leakage The mounting screws must be evenly tightened Do not overtighten 7 Connect the lead wires to the nebulizer print plate The colored lead wires must be inserted as shown on the plate Orange wire to ORG Yellow wire to YEL 8 To replace the nebulizer print plate remove the four wires connected to the circuit board terminals from the plate to be replaced 9 Remove the plate mounting screws and remove the plate from the heat sink Save the screws to mount the new part Photo 24 10 Install the new plate together with the silicon sheet provided to promote heat transmission using the saved mounting screws 11 Connect the nebulizer print plate interconnecting wires black to H white to G and transducer lead wires orange to ORG yellow to YEL Note When the nebulizer print plate is replaced it is recommended that the transducer be replaced also 12 When replacing the heat sink remove the 2 nebulizer print plates Loosen the 4 screws securing the heat sink and remove it Photo 25 13 Repla
38. st output is too low Remarks Water supply float switch FS1 is faulty Water supply float switch arm sticking Water supply solenoid valve is faulty Float switch for low water level is faulty Float switch for low water level is sticking Fan lead wires are loose or disconnected from the terminals Drain the water tank remove the printed circuit board terminal FS1 and test the continuity of the float switch If there is no continu ity replace the switch Clean the switch If operation is not re stored replace switch Replace the solenoid valve If no continuity exists replace the switch Clean the switch If operation is not re stored replace switch No water supply is provided even if the water tank is drained and voltage of the SV terminal on the printed circuit board is 48VAC With the water tank filled with water remove the wire from terminal FS2 on the printed wiring board and check conti nuity of float switch Open the electrical Correct section and check the lead wire connecting terminals Fan is Faulty Fan won t operate when Replace fan 48 VAC is applied Water supply float switch is faulty Water supply float switch arm sticking If there is continuity replace the switch If the water level in the tank is up to the overflow pipe remove the wire from terminal FS1 onthe printed circuit board and ensure there is no continu ity on the f
39. tall the plug securely Photo 10 3 Remove the connection of the water supply Be sure to use two wrenches to prevent the body of the compression fitting on the humidifier from turning 4 Remove the junction box cover and the power cables from the terminal block Then remove the screws from the conduit plate 5 Move the Humidifier body to a place where you can work on it easily 6 Remove four screws holding the junction box and remove it Photo 11 7 Remove screws for the enclosure cover and remove it Photo 12 8 Remove the screws holding the airflow guide panel and remove it Photo 13 9 Remove exit pipe base and check the interior of Water tank Photo 14 10 Remove the screws from the fan base Photo 15 5 7 STUILZ ee i Air Technology Systems Inc January 2008 BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 11 Remove the control water tank and remove the 2 lead wires from terminals H and G on the printed circuit board Photo 16 amp 17 Note Grasp the terminals when removing wires Never pull the lead wires 12 Remove the water supply piping by loosening the fitting in two places Photo 18 13 Loosen the hose clamp and remove the drainage hose Photo 19 14 Remove the screws fan side from the mist generator s mounting tabs and remove the mist generator Photo 20 5 4 2 Re assembling 1 Before re assembling the humidifier confirm there is
40. tance 2 J 2008 i STULZ i ae Se Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 5 2 Maintenance Items and Necessary Tools ltem Cyce Description _ Necessary Tools Air filter cleaning Check water tank interior mist exit pipes and electrical parts Routine Maintenance About once a month depend Sect 5 2 1 on ing on the extent of contami page 5 3 nation The interval should be shortened if environmental conditions are particularly dusty Once every 6 months or as required if environment is dusty or water supply quality is poor Sect 5 2 2 on page 5 3 Replacing Parts Adjustable wrenches 2 Replacing transducer Replacing nebulizer print plate Replacing water supply solenoid valve Replacing float switches Replacing the printed circuit board Replacing the fan After about 10 000 to 15 000 Phillips screwdriver hours of operation Saison 7 32 Nut driver If damaged or upon failure page 5 8 Also recommended when replacing transducer Small brush Soft cleaning cloth Diagonal wire cutter Sect 5 4 4 on page 5 9 Sect 5 4 5 on page 5 9 If damaged or upon failure January 2008 STLILZ oe Saas See Air Technology Systems Inc BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual 5 2 1 Air Filter 1 Locate the air filter in the rear of the unit and sli
41. und to have a manufac turing defect a credit will be issued When returning defective part s complete the Return Material Authorization Tag and the address label received with the replacement part See SATS Standard Warranty located in section one of this manual 6 3 Obtaining Spare Replacement Parts Spare and replacement parts requests are to be made through the Product Support Group PSG by fax 301 620 1396 telephone 240 529 1399 or E mail parts stulz ats com Quotes are given for specified listed parts for a specific unit SATS accepts Visa and MasterCard SATS may extend credit to its customers a credit application must be prepared and approved this process could take one week A 25 minimum restocking charge will be applied on returned stocked parts that were sold as spare replacement parts If the returned part is not a stocked item a 50 restocking charge may be applied Additionally a Return Material Authorization Number is required when returning parts To receive credit for returned repair replacement parts the parts must be returned to SATS within 30 days of the purchase date Spare part sales over 30 days old will be considered final and the parts will remain the sole property of the ordering party January 2008 6 1 STUILZ er eae een Air Technology Systems Inc 7 0 BNU Ultrasonic Humidifier Installation Operation amp Maintenance Manual DRAWINGS 7 1 Layout Drawing
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