Stulz DAH Installation, Operation And Maintenance Manual Download

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DAH

Ducted Air Humidifier

Installation, Operation and Maintenance Manual

Ultrasonic Humidification

DAH Series
GEN2

Installation, Operation and Maintenance Manual

Energy Efﬁcient Ultrasonic Humidiﬁer

Summary of Contents for DAH

Page 1: ...DAH Ducted Air Humidifier Installation Operation and Maintenance Manual Ultrasonic Humidification DAH Series GEN2 Installation Operation and Maintenance Manual ...

Page 2: ...Technology Systems Inc STULZ 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is in direct violation of U S copyright laws and is strictly prohibited without the express written consent of STULZ Unpublished rights reserved under the copyright laws of the United States and of othe...

Page 3: ...and Control Wiring 13 Wire Sizing Control Box to Humidiﬁers 13 Connecting Humidiﬁer s to Control Box 14 Single Humidiﬁer 15 Multiple Humidiﬁers Grouped 15 Multiple Humidiﬁers Optional Multi Tier Mounting Rack Grouped 15 Operation 16 Purge the Water Line 16 Initial Operation Checklist 16 Operation Procedure 16 Precautions 17 Steps for Long Term Shutdown 17 Maintenance 18 Periodic General Maintenanc...

Page 4: ...Typical Wiring Diagram for Stand Alone Version 29 DAH 24 30 Typical Wiring Diagram for Stand Alone Version 30 DAH 24 30 Typical Wiring Diagram for Stand Alone Version 31 Figures Figure 1 Ultrasonic Humidiﬁer Model DAH 16 2 Figure 2 Booster Fan Assembly 6 Figure 3 Humidiﬁer Mounting Rack Front View Shown with Five Humidiﬁers 7 Figure 4 Ultrasonic Humidifier Mounting 10 Figure 5 Duct Mounting Vertic...

Page 5: ...Series GEN 2 Ultrasonic Humidifier IOM Manual Nomenclature DRH 04 S DRH DAH S Number of Transducers Ducted Air Humidifier Ducted Air Humidifier Blank Ultra Series Control S Stand Alone 04 08 12 16 24 30 ...

Page 6: ...UTION and WARNINGsymbols 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 that is important for protecting your equipment and performance Be especially careful to read and follow all cautions A bold text...

Page 7: ...gap per local and national plumbing codes 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 Observe the unit for water leakage A short circuit could occur if the humidiﬁer is splashed with water while operating Never attempt to remove the mist guide cover and or the mist blow tubes while the humidiﬁer is ...

Page 8: ...Water supply temperature F 40 to 104 These parts must be provided by the user DI or RO supply water Water supply valve Water supply tubing 1 4 stainless steel or poly tubing rated for DI water power supply wiring and control wiring to the control box 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 pow...

Page 9: ...r stream High Water Float Switch For maximum atomization it is essential the water level in the tank be constantly maintained The High Water Float Switch is an input to the Level Controller It is open when the water level is below the optimal level and is closed when the water level reaches the maximum level Low Water Float Switch Operating the humidiﬁerwhen the water level is belowthe top of the ...

Page 10: ...urned on When the water level falls below the high water level the microprocessor turns the Water Fill Valve Solenoid on again to maintain optimal water level When the on off command is removed the Solid State Relay is turned off and after a few seconds time delay to eliminate the remaining mist out of the humidiﬁer the Fan is turned off Proportional control is accomplished by the microprocessor m...

Page 11: ...nications 8 Transducer BoosterFan Optional DAH 24 30 Only DAH Series Ultrasonic Humidiﬁers are to be installed in air handlers or air ducts designed with a terminal velocity of 450 to 750 FPM across the humidiﬁer so the mist is readily eliminated by the pressure drop caused by the air passing over the mist guide When using continuously adjustingfan speeds in air handlers it is possible for the air...

Page 12: ...ishes the optimal spacing between units to ensure efﬁcient operation The humidifiers are shipped preassembled to the mounting rack This conveniently combines all the humidiﬁer s water connections For point to point wiring terminations follow the electrical drawing supplied with your system A manual shut off valve is installed for all the humidiﬁers on the rack A water conductivity probe is shipped...

Page 13: ...s provided for your unit in a clear plastic bag These documents need to be kept with the unit for future reference Site Preparation Install the unit in a secure location in an AHU or in the discharge ductwork where it cannot be tampered with and power cannot be inadvertently turned off Allow access to the unit for routine operation servicing and maintenance A sight window may be installed on the s...

Page 14: ...before or after an elbow If any obstacle exists in front of the atomized mist outlet the mist will be condensed on the obstacle to form water droplets Humidiﬁers should never be placed one behind the other on the same level They must be placed either one directly above the other in the same vertical plane Figure 4 or in a cascade arrangement with the highest humidiﬁer being the ﬁrst one in the dir...

Page 15: ...to a ﬂat surface Ensure the mounting surface 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 Figure 4 Ultrasonic Humidifier Mounting SIDE VIEW ...

Page 16: ...rangement Figure 6 Duct Mounting Cascade Arrangement NOTE Provide access panel sufficient for units to be removed ISOMETRIC VIEW See Note SIDE VIEW VERTICAL ARRANGEMENT NOTE Provide access panel sufficient for units to be removed ISOMETRIC VIEW See Note SIDE VIEW CASCADE ARRANGEMENT ...

Page 17: ...oly tubing rated for use with deionized water Prepare the water supply piping The water supply piping should be equipped with a water supply valve for maintenance purposes 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 Purge the Water Line This is a ...

Page 18: ...midiﬁer is rated to operate with a nominal input of 48VDC To maintain warranty coverage never allow the humidiﬁer input voltage to exceed 51 volts as damage will occur to the transducers and print plates Wire Sizing Control Box to Humidiﬁers The table below indicates the correct electrical wire sizing from the control box to the humidiﬁer power cable for three different distances All wire sizes li...

Page 19: ...ble is also provided with a moisture proof connector at one end humidifier connection Consult Product Support for assistance by fax 301 620 1396 telephone 888 529 1266 or E mail parts stulz ats com for optional cable lengths The table below lists the correct wire sizing from the Control Box to the Ultrasonic humidifiers for various models 48 VDC Wire Sizing Room Control Box To Ultrasonic Humidiﬁer...

Page 20: ...Additional factory provided 20 foot RJ45 cable s with moisture proof connectors at both ends must be used to make the data communications connections between humidiﬁers within the humidifier or ductwork The factory provided end of line termination resistor must be installed in the second RJ45 port of the last Ultrasonic Humidiﬁer Multiple Humidiﬁers Optional Multi Tier Mounting Rack Grouped Once t...

Page 21: ...ted and secured All parts are correctly installed After the above items are verified the humidiﬁer is ready to operate Operation Procedure 1 Turn on power 2 Verify the fan is operating 3 Turn the main power source switch on the control box to the On position 4 Open the water supply valve This allows water to ﬂow to the humidiﬁer 5 Perform a manual drain cycle to ﬂush any particulates from the tank...

Page 22: ...m the humidiﬁer during operation 3 For sanitary reasons drain the water from the tank if the humidiﬁer is turned off for more than 3 days Steps for Long TermShutdown If the humidiﬁer is not signaled to turn On for a period of three days the Level Controller will automatically signal the humidiﬁer to initiate a drain cycle When operation is stopped for a long time one week or longer the following s...

Page 23: ...ter supply valve When performing maintenance or repairs place small parts such as screws where you can find them such as in a cup Testing insulation resistance and dielectric withstand voltage should be avoided because the humidiﬁer incorporates sensitive electronic parts When parts are replaced genuine STULZ parts must be used Contact Product Support by fax 301 620 1396 telephone 888 529 1266 or ...

Page 24: ...iver Soft cleaning cloth Small brush Diagonal wire cutter Visually inspect water supply strainer ﬂow regulator Inspect clean every 3 months Replace as necessary Replacing Parts Replacing Temperature Sensor If damaged or upon failure Replacing transducer After about 10 000 to 15 000 hours of operation Replacing nebulizer print plate If damaged or upon failure Also recommended when replacing transdu...

Page 25: ...r 7 Remove the screws 4 pieces holding the electrical box access cover Photo 2 8 Remove the electrical box access cover Photo 3 and inspect the interior and verify the following No water leakage from the solenoid valvejoint No damage to electrical wires or cables No parts abnormalities 9 Slide the board out and ensure there is no discoloration deformation or deterioration of the printed circuit Ph...

Page 26: ...OTE When assembling do not to pinch the wires between the sheet metal Water Tank 1 Perform steps 1 to 3 in the Electrical Parts section Photo 1 2 Check the water tank interior for contamination 3 Wipe and clean the water tank interior 4 Clean 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 Water Supp...

Page 27: ...ensor detects overheating Check if ambient temperature and water temperature are within speciﬁed range Correct Amount of mist is too low Power supply system Supply voltage is low Check voltage at power supply output terminals while operating the humidiﬁer at 100 capacity Correct the voltage with the adjustment screw on the power supply Water supply control system Operating water level is high and ...

Page 28: ...eck the lead wire connecting terminals Reconnect or tighten connections as required Amount of mist is too low Water supply system overﬂowing Water supply ﬂoat switch is faulty If the water level in the tank is up to the overﬂow pipe remove the wire from terminal X3 on the printed circuit board and ensure there is no continuity on the ﬂoat switch If there is continuity re place the switch Water sup...

Page 29: ... side of the tank adjacent to the transducers Photo 14 Reassembling 1 Before reassembling the UltrasonicHumidiﬁer verify there is no water leakage by pouring water into thetank 2 When reassembling after replacing parts inspect the interior and check the following All the screws are tightly secured All the lead wires arecorrectly and securely connected Pay attention to the optional booster fan lead...

Page 30: ... a transducer remove the two transducer lead wires yellow and orange from the nebulizer print plate Photo 17 CAUTION Grasp the terminals when removing wires Never pull the lead wires 3 Using a 5 5 mm nut driver remove the transducer mounting nuts 2 pieces and remove the transducer spacer and O ring Save the nuts to mount the new part Photo18 4 Clean the spacer O ring groove and O ring 5 Assemble t...

Page 31: ...bling section reassemble the unit by reversing the procedure described in the Preparation for Repairs Removal of Water Tank section Water Solenoid Valves Float Switches and Level Control Board 1 Refer to the Removal of Water Tank section and remove the tank from the base 2 Place the tank on a well lit padded work surface Photo 23 3 Cut the wire ties bundling the solenoid valve and ﬂoat switch lead...

Page 32: ...he procedure described in the Preparation for Repairs section Float Switches 1 To replace a ﬂoat switch remove the lock nut on the faulty ﬂoat switch 2 Replace it with a new float switch Photo 27 Level Control Board 1 To replace the level control board slide the level control board out along the guides 2 Remove the lead wire terminal connectors 4 pieces Photo 28 from the board see Photos 3 and 4 N...

Page 33: ...information is found on the unit s nameplate Unit Model Number DRH XX Sales Order Number Unit Serial Number Description of Problem Obtaining Warranty Parts Warranty inquiries are to be made through the Technical Support Department at 888 529 1266 Monday through Friday from 8 00 a m to 5 00 p m EST A service technician will troubleshoot the system over the telephone with a field service technician ...

Page 34: ...ustomer Billing Address Shipping Address Customer s Telephone and Fax Numbers Contact Name Unit Model Number Serial Number The customer is responsible for the shipping cost incurred for returning the defective part s Return of defective part s must be within 30 days at which time an evaluation of the part s is conducted If the part is found to have a manufacturing defect a credit will be issued Wh...

Page 35: ...t application must be prepared and approved this process could take oneweek A 25 minimum restocking charge will be applied on returned stocked parts that were sold as spare or replacement parts If the returned part is not a stocked item a 50 restocking charge may be applied An RMA number is required when returning parts To receive credit for returned repair replacement parts the parts must be retu...

Page 36: ...m numbers listed below 1 Electric Box Cover 10 Mounting Foot 2 Power Connector 11 Hole For Drain Stub 3 Lock Nuts 12 Drain Stub 4 Mist Guide Cover 13 Drain Cap 5 Water Inlet 90 Fitting 14 Print Plates 6 Water Supply Strainer Flow Regulator 15 Solid State Relay 7 Nipple 16 Slot For Level Control Board 8 Water Tank 17 Data Communication Connectors 9 Base 18 Fill Solenoid ...

Page 37: ...Series GEN 2 Ultrasonic Humidifier IOM Manual DAH 04 16 Typical Wiring Diagram for Modbus Version 26 ...

Page 38: ...Series GEN 2 Ultrasonic Humidifier IOM Manual DAH 04 16 Typical Wiring Diagram for Stand Alone Version ...

Page 39: ...Series GEN 2 Ultrasonic Humidifier IOM Manual DAH 24 30 Typical Wiring Diagram for Stand Alone Version 28 ...

Page 40: ...Series GEN 2 Ultrasonic Humidifier IOM Manual DAH 24 30 Typical Wiring Diagram for Stand Alone Version ...

Page 41: ...Series GEN 2 Ultrasonic ...

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