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Nortec NH-EL Series Installation And Operation Manual Download Page 74

 

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Troubleshooting

 

Organization of Troubleshooting Chapter 

The troubleshooting chapter is broken down into 2 sections.   

General Troubleshooting

   

Deals with troubleshooting incorrect humidifier operation, 
steam line and plumbing issues without any control 
software warnings or faults. 

Humidifier Warnings and Faults

    Deals with warning and error messages that are generated 

by the humidifier’s control software.    

Troubleshooting Requirements 

 

Ensure the installation meets the installation requirements outlined in the Installation 
Chapter of this manual. 

 

Familiarize yourself with the operation of the humidifier by reading the Operation Chapter of 
this manual. 

 

Wiring diagram specific for your humidifier is installed on the inside of the humidifier door.  A 
generic copy of the NH-EL wiring diagram is also included at the end of this chapter for 
reference purposes.   

 

When contacting your local representative or NORTEC for troubleshooting assistance, please 
ensure the serial number has been obtained for reference purposes. 

 
 
 
 
 
 
 
 
 
 
 
 

CAUTION:

 Be aware, when troubleshooting, that the humidifier is powered by high voltage. 

Familiarity with both good practices and wiring of the humidifier is recommended.  Any 

troubleshooting that requires opening the cabinet should be done by qualified personnel. 

NOTE:

 Most humidifier faults are not caused by faulty equipment but rather by improper 

installation.  A complete fault diagnosis always involves a thorough examination of the 

entire system. Often, the steam hose connection has not been properly executed, or the 

fault lies with the humidity control system. 

 

Summary of Contents for NH-EL Series

Page 1: ...eration Manual Includes installation operation maintenance and troubleshooting information for your NH EL Electric Steam humidifier 2570435 D 25 JUN 2014 Important Read and save these instructions This guide to be left with equipment ...

Page 2: ...tten authorization of Nortec Humidity Ltd except to the extent required for installation or maintenance of recipient s equipment Liability Notice Nortec does not accept any liability for installations of humidity equipment installed by unqualified personnel or the use of parts components equipment that are not authorized or approved by Nortec Copyright Notice Copyright 2014 Nortec Humidity Ltd All...

Page 3: ...39 Installation Check 40 NH EL User Interface 41 Start Up Procedure 42 Information Screens 43 Nortec Digital Controls 46 NH EL Pre Start Up Checklist 47 NH EL Start Up Checklist 48 Operation 49 LED Status Lights 51 How the Humidifier Works 54 NH EL Humidifier Configuration 62 Maintenance and Servicing 63 Required Maintenance 68 Extended Shutdown 69 NH EL Maintenance Checklist 70 Troubleshooting 72...

Page 4: ...rformed by a licensed electrician CAUTION Plumbing Plumbing to be performed by a licensed plumber Drain water from humidifier can be very hot Do not drain to public sink All plumbing work should be done according to local plumbing code CAUTION Installation Do not mount on hot surfaces Do not mount in area where freezing can occur Do not mount on vibrating surface Do not mount on floor The NH EL pr...

Page 5: ... basis Any and all damage breakage or loss claims are to be made directly to the shipping company Before Installation 1 Ensure that available voltage and phase corresponds with humidifier voltage and phase as indicated on humidifier s specification label 2 Ensure that the dedicated external fuse disconnect is of sufficient size to handle the rated amps as indicated on the specification label Refer...

Page 6: ...g Touch Screen Display On Off Switch Auxiliary Drain Switch Door Interlock Switch Driver Board Remote Relay Board Contactor High Voltage Terminal Block Transformer Integrated Controller Control Terminal Strip NOTE NH EL 005 030 shown component location may vary slightly for other models TEST Humidifier Components Figure 2 NH EL Humidifier Components ...

Page 7: ...rain Canal Combines cylinder drain water and fill cup overflow into a single drain outlet Drain Valve Drains water from cylinder Driver Board Provides input and output connections to humidifier components Fill Cup Provides an air gap for backflow prevention Fill Valve Controls flow of water into humidifier High Voltage Terminal Block Primary power connection from remote disconnect to humidifier Hi...

Page 8: ...iver board controls each cylinder See Figure 3 NH EL Sizes Double units can operate both cylinders in series or parallel from a single set of control signals or independently based on two sets of control signals see Double Mode NH EL 150 200 only on page 56 for configuration instructions Independent Operation If configured for independent operation then 2 sets of control wiring must be provided Co...

Page 9: ...ng steam into air ducts where short absorption is required Digital or Analog Control Humidistats Controlling the output of the humidifier based on sensed RH can be mounted in the space being humidified or in the duct Digital RH Transducers Communicating RH in a space or duct to the humidifier Digital or Analog High Limit Humidistats Preventing over humidification in a duct by shutting down or thro...

Page 10: ...2573399 31 7 40 11 4 421 0 3 1 2 45 80 21 37 220 240 2573400 27 5 35 11 4 421 440 480 2573402 13 7 20 11 4 411 550 600 2573403 11 0 15 11 4 411 50 22 5 208 2573404 51 9 70 18 7 621 0 5 2 0 85 150 39 68 220 240 2573405 45 0 60 18 7 621 440 480 2573407 22 4 30 18 7 605 550 600 2573408 18 0 25 18 7 605 75 34 208 2573409 77 9 100 28 1 621 0 5 2 0 220 240 2573410 67 4 90 28 1 621 440 480 2573412 33 8 4...

Page 11: ...2573441 13 20 7 8 309 3 20 9 208 2573442 21 8 30 7 8 303 0 13 0 5 220 240 2573443 18 9 25 7 8 303 440 480 2573445 9 5 15 7 8 311 550 600 2573446 7 6 15 7 8 311 30 13 5 208 2573447 32 4 40 11 7 421 0 3 1 2 83 118 38 54 220 240 2573448 28 1 35 11 7 421 440 480 2573450 14 20 11 7 411 550 600 2573451 11 3 15 11 7 411 50 22 5 208 2573452 52 6 70 18 9 621 0 5 2 0 123 188 56 85 220 240 2573453 45 6 60 18...

Page 12: ...2 Control Wiring 22 Control Location 24 On Off Control Wiring 25 Keep Warm Wiring 26 Modulating Control Wiring 28 Transducer Control Wiring 29 Double Unit Control Wiring 33 Remote Fault Option Wiring 34 Multi Mode Wiring 35 Modbus Digital Control 36 Options and Accessories 37 Fill Cup Extension 37 Extreme Drain Water Cooling 37 Condensate Cooling External 37 Foam Protection 37 Internal Fusing 37 R...

Page 13: ...VAC 2 Security Loop 3 Common 4 Channel 1 5 Channel 2 6 5 VDC 7 Ground 8 Blower Pack 9 Blower Pack On Off Controls Modulation Controls E X T E R N A L N H E L L1 L2 L3 Ground Dedicated Circuit Breaker or Disconnect NH EL EXTERNAL Cold potable water 150 1200 microsiemens 30 80 psig Air Gap in NPT 2 in 5 cm min 1ft 30 cm 1 ft 30 cm min 1 24 VAC 2 Security Loop 3 Common 4 Channel 1 5 Channel 2 6 10 VD...

Page 14: ...tenance of the humidifier Consult local and national codes before final location and installation NORTEC does not accept responsibility for installation code violations Install only in areas with ambient temperature 41 104 F 5 40 C relative humidity 5 95 non condensing When possible install the humidifier below the steam distributor Take care to provide proper steam line routing and proper condens...

Page 15: ...lower Packs on High Speed Humidifier Capacity lbs hr kg hr Minimum No of Blower Packs Min Frontal Clearance Inches cm Min Overhead Clearance Inches cm Min Left side Clearance Inches cm Min Right side Clearance Inches cm 30 13 6 1 120 305 12 31 12 31 12 31 100 45 4 1 248 630 36 91 30 76 30 76 NOTES Nominal Conditions 72 F 22 2 C 43 RH Low speed not recommended for 100 lbs hr humidifier Consult fact...

Page 16: ...her 4 Raise the unit and place the screws through the keyholes Make sure the unit is level then tighten the screws to secure the unit in place 5 Place L Shaped brackets on top of the unit with holes inline with the studs Using the appropriate sized wood screw fasten the L brackets to the studs securing the unit from any upward motion See Figure 6 Mounting with Keyholes Figure 6 Mounting with Keyho...

Page 17: ...Supply water should at 30 to 80 PSIG and be between 150 750 microsiemens Hardness 0 12 GPG For 750 1200 microsiemens please consult factory Install water shut off valve and union before humidifier to facilitate servicing The drain line should not end in a sink used frequently by personnel or where plumbing codes prohibit Route to a floor drain or equivalent for safety reasons Ensure drain line is ...

Page 18: ...ze condensate losses and the possibility of generating back pressure in the steam distribution line Figure 8 Distributor Location in Duct provides common guidelines for locating a steam distributor in a duct Figure 8 Distributor Location in Duct 12 in 30 cm min Calculated absorption distance to any obstruction or 8 10 ft 2 4 3 m if unknown Mount distributor to side of duct 2 x duct height min 2 3 ...

Page 19: ...steam runs 5 14 4 1 1 125 X 0 049W 0 06 0 09 10 24 7 20 34 10 30 44 13 50 86 26 2 2 0 X 0 065W 0 11 0 16 75 150 94 28 100 200 100 30 Nortec Steam Hose 5 30 10 3 Pt No 1328810 7 8 0 1 0 15 50 200 10 3 Pt No 1328820 1 3 4 0 15 0 22 Note The use of steam line other than copper stainless steel tube or Nortec supplied steam line will void the warranty and may adversely affect the operation of the humid...

Page 20: ...valent Condensate normally cools in traps but is still hot A SAMe or larger steam line generates more condensate and water may not cool in the trap A drain water cooler option may be installed if required by code Route condensate to floor drain or equivalent in multi unit to single SAM e installation 12 in 30 cm min drop to top of P Trap P Trap min 6 in 15 cm or duct static pressure 2 in whichever...

Page 21: ...ine Installation 1 Allow minimum of 12 in 30 cm before first bend in steam line 2 Slope the steam lines Never 1 ft 30 cm min 1 ft 30 cm Best Never 1 ft 30 cm min 1 ft 30 cm Best Best Good Never Best Good Never 1 ft 30 cm min 0 5 in 12 mm 1 ft 30 cm min 2 in 5 cm Steam Line Rules The following 10 points provide rules for installing steam lines connecting the NH EL humidifier to ASD BSD CSD SAMe and...

Page 22: ...utor with Nortec adapter 7 Install condensate traps at low points and horizontal to vertical transitions Best Never 12 in 30 cm min Radius 12 in 30 cm Radius Best Never 12 in 30 cm min Radius 12 in 30 cm Radius Good min 12 in 30 cm Never 12 in 30 cm Good min 12 in 30 cm Never 12 in 30 cm Good Never Notes 1 Units must operate in parallel 2 Also for double units cylinders must operate in parallel Go...

Page 23: ... valve or other obstruction Never Never Reduce Steam Line Size Install Copper or SST without Insulation Never Ne Reduce Steam Line Size Install Copper o Never Install a valve or other obstruction Never Never Reduce Steam Line Size Install Copper or SST without Insulation Never Install a valve or other obstruction Never Never Reduce Steam Line Size Install Copper or SST without Insulation Never Ins...

Page 24: ... Disconect Note 1 2 3 4 Optional internal fuses are not a substitute for external fuses Dedicated external fused disconnect must be installed Fusing must not exceed max circuit protection as indicated on the specification label Ensure that adequate power is available to carry full humidifier amp draw as indicated on the specification label All wiring to be in accordance with national and local ele...

Page 25: ...tion Control Location Figure 13 Control Location Duct Humidification Duct Humidification 1 Air Proving Switch Locate so that it can sense air flow or lack of it 2 Duct High Limit NH EL can be modulating On Off or a humidity sensor Locate at least 10 feet from steam distributor or far enough that under normal conditions steam is fully absorbed 3 Humidity Control NH EL can be Modulating On Off or a ...

Page 26: ... Mount on indoor wall in area representative of room humidity draft doorways sunlight or overhang such as a shelf can affect reading 2 High Limit Humidistat not shown Install a high limit On Off humidistat in area representative of room humidity 3 Outdoor Temperature Sensor not shown Mount outside in area representing air temperature Note Regardless of selecting on off or modulating control method...

Page 27: ...d shorting while wiring Digital Humidistat requires 24 VAC power from terminals 1 and 3 of humidifier 2520273 Digital On Off Duct Humidistat can also be used for duct high limit Wire in series to 3 Common and 4 Digital Out of the humidistat Humidifier Terminal Strip Air Proving Switch Duct High Limit 2548731 Digital On Off Humidistat 1 Common 2 24 VAC 3 Digital In 4 Digital Out 5 Fan Activation 6 ...

Page 28: ...Optional Modulating Humidity Controller Channel 2 Humidity Controller Channel 1 Other On Off Controls Figure 17 Duct Sensor Wiring Keep Warm Wiring For the keep warm feature to work the security loop between terminal 1 and 2 on the low voltage terminal strip must be closed To accomplish this 1 Install an On Off high limit humidistat between terminal 1 and 2 2 Install any other On Off controls in s...

Page 29: ... must be duct mounted It can be On Off or modulating Control Humidistat can be mounted in space or in return air duct and can be On Off or modulating Air Proving Switch High Limit Humidistat Control Humidistat Humidifier Terminal Strip SPACE SPACE Modulating Control Wiring Figure 19 Modulating Controls Figure 20 Digital Modulating Humidistats 1 Common 2 24 VAC 1 Common 2 24 VAC Analog Out 3 24 VAC...

Page 30: ... shown below wire digital display to humidifier as shown for 1510142 Digital Wall Humidistat 1509858 Wall Sensor 2520261 Digital Wall W O Sensor 2520261 Digital Wall W O Sensor 1509858 Wall Sensor Figure 21 Digital Wall Humidistat Remote Wall Sensor Figure 22 Digital Wall Humidistat On Off High Limit Duct Humidistat 1 Common 2 24 VAC 1 Common 2 24 VAC 3 Common 4 Digital Out 7 Temperature 8 Tempera...

Page 31: ...cer Note 1 2 3 4 Install On Off controls or jumper between terminal 1 and 2 of humidifier Terminal 1 is 24 VAC Hot turn unit off to avoid shorting while wiring Duct High limit can be duct humidity transducer as shown or duct On Off humidistat Humidity Control can be wall humidity transducer as shown duct humidity transducer or On Off humidistat Humidifier Terminal Strip 1 Common 2 24 VAC 3 Analog ...

Page 32: ...or independently from two sets of control signals See Double Mode NH EL 150 200 only on page 56 for more information Parallel or Series One set of control signals Double Mode Series or Parallel wire the controls to terminal block A Figure 25 Parallel or Series Mode Control Wiring Double Unit Always select Parallel operating mode when connecting both cylinders to one SAM e Use separate steam distri...

Page 33: ...Installation 30 Double Unit Control Wiring Continued Figure 26 Double Unit Parallel or Sequence Wiring ...

Page 34: ...le Unit Figure 28 Double Unit Independent Mode Wiring Zone B Cylinder B Controls Zone A Cylinder A Controls Connect zone B controls to terminal block B Connect zone A controls to terminal block A B A Zone B Cylinder B Controls Zone A Cylinder A Controls Connect zone B controls to terminal block B Connect zone A controls to terminal block A B A 1 24 VAC 2 On Off Loop 3 Common 4 Channel 1 5 Channel ...

Page 35: ...the humidistat and wiring the outdoor temperature sensor to these terminals When the outdoor temperature setback feature is in effect the humidistat will normally display the calculated setpoint limit based on the outdoor air temperature A snowflake will also be displayed to indicate cold weather operation When any key on the controller is pressed the LCD screen will display the customer specified...

Page 36: ... on the board The relays indicate the following status 1 Unit On The normally open relay is closed when the humidifier has power and the On Off switch is set to on 2 Steam The normally open relay is closed when the control board detects that the cylinder is drawing current and steam is being produced 3 Service The relay can be wired to open NC or close NO when a warning is displayed on the humidif...

Page 37: ...t up to 16 units equivalent of 1600 lb hr using 18 24 AWG multi strand twisted pair shielded cable Connect humidistats transducers and security loop to master unit only Jump the security loops on slave units When connecting double units connect only to driver board A See NH EL Humidifier Configuration on page 54 and Multi on page 57 for software configuration Figure 32 Multi Mode Wiring ...

Page 38: ... Module to BMS Modbus EIA 485 2 wire 18 24 AWG Shielded Twisted Pair 120 Ω Should not exceed 2200 ft Connect humidifiers in daisy chain to the Modbus RTU Ground shield at one end only BMS or humidifier Modbus Communication Requirements Table 9 Modbus Communication Parameters lists the requirements for Modbus communication with the NH EL and the range of adjustable parameters Adjustable parameters ...

Page 39: ...e identical to installation of an NH EL without a blower pack The steam line condensate return and wiring connections to the blower pack have been done at the factory For in space distribution with large steam size capacities humidifier Dual cylinder NH EL 150 200 the RM BP remote mounted blower pack can be added to the humidifier Figure 34 Remote Mounted Blower Pack For installation instructions ...

Page 40: ...m traps distributors and SAMe headers If condensate cannot be routed back to the humidifier tank via the humidifier s fill cup then an external condensate cooler may be required to meet regulations restricting the temperature of hot water that can be fed to drain The external drain water cooler is only available for field installation Foam Protection NORTEC s NH EL includes software detection of f...

Page 41: ...witch 41 Start Up Procedure 42 Information Screens 43 Nortec Digital Controls 43 Demand Control 43 On Off Control 44 Transducer Control 44 Multi Unit Operation 45 Modbus Control 45 BACnet MS TP and IP 45 Other Building Automation Systems 45 Nortec ONLINE 46 NH EL Pre Start Up Checklist 47 NH EL Start Up Checklist ...

Page 42: ...r gap 1 2 in line min 30 80 PSI Not plastic drain Not to sink High Limit Wired to terminal 5 On Off in series between terminal 1 and 2 Mounting Unit level Screws into structural member L Bracket on top Spec label Calculated absorption distance to any obstruction or 8 10 ft 2 4 3 m if unknown 2 x duct height from fan or transition SPACE SPACE Installation Check Before turning on power to the NH EL ...

Page 43: ...der even if software is not functioning To drain the cylinder put the switch into the drain position For normal operation the switch should be in the off position If the unit has multiple cylinders the switch will have both Cylinder A and Cylinder B settings This allows single cylinder draining Door Interlock Switch The door interlock switch cuts power to the contactor when the door is removed It ...

Page 44: ... page 43 If transducer controls have been installed then adjust the humidity setpoint using the touch screen display see NH EL Humidifier Configuration on page 54 7 When either the external humidistat or internal controller generate a demand for humidity higher than 27 and the security loop is closed the LED will turn solid green the main contactor will engage the fill valve will activate after a ...

Page 45: ...e screen The Information screens also provide access to an output graph that displays a trend graph indicating the performance of the humidifier To view the graph press View The buttons on the screen change the time scale at the bottom of the graph Buttons at the bottom of the screen activate deactivate display of indicated data The Humidifier Status screen shows the control mode configuration Con...

Page 46: ... to open and close a relay that opens and closes the humidifier s security loop Adjust the setpoint to the desired setting by using the up down arrow buttons on the controller Output signal is shown on modulating controller proportional to the demand State of On Off humidistat Setpoint RH Humidity RH Indicates the humidistat is on A half moon indicates it is off Snowflake indicates the setpoint is...

Page 47: ...e unit configured to operate between 20 and 30 the demand to the master must be greater than 22 7 Each unit connected in a multi mode system will display its demand as a percentage of the range for which it is configured Example a slave unit configured to operate between 20 and 30 demand will display a demand of 50 when demand to the master is 25 Note See Multi on page 57 for software configuratio...

Page 48: ...net IP interface then the Source parameter in the Control Setting Menu must be set to BACnet See page 60 See supplemental Building Management manual for more information Other Building Automation Systems Additional protocols such as LonWorks and Johnson N2 can be used with the NH EL by purchasing the respective Building Automation System option See supplemental Building Management manual for more ...

Page 49: ...nsate traps No Hose Kinks Restrictions Type of Insulation Condensate Line s P Trap min 6 in or duct press 2 in P Trap min 12 in drop Water Line Conductivity 150 750 microsiemens Water pressure 30 80 psig Drain Line Air gap within 3 ft of the unit Diameter Size Cylinder Seated in drain valve and secured yes no Wiring Wiring connections and connectors secured yes no Controls Control Location Control...

Page 50: ...1 and 2 closed yes no Controls Installed Controls Match Configuration yes no Control Setpoint High Limit Setpoint Demand Modulating Humidistat yes no or Sensed RH Setpoint Transducer yes no The Humidifier will undergo a self test when the power is turned on activating the LED s and other internal components If the above listed prerequisites are fulfilled the humidifier will start filling the cylin...

Page 51: ...H Setpoint 54 NH EL Humidifier Configuration 54 Navigating the NH EL Software 54 Main Menu NH EL Password 55 Configuration Submenu 55 Features Submenu 56 Controls Submenu 57 Multi Mode 58 General Submenu 59 Comms Submenu 61 Service Submenu 61 Admin Submenu Note For Description of Components in Introduction 3 Humidifier Components 4 Description of Components ...

Page 52: ... are common during normal operation and do not normally indicate that service is required For a new cylinder the Level Sensor On warning indicates that full capacity cannot be reached because cylinder water is not concentrated For an old cylinder the Level Sensor On warning may be an indication that the cylinder will soon have to be replaced Warning Max Level The above warning is normal during the...

Page 53: ...e 41 Humidifier Schematic Control Board Contactor Steam Distributor Steam Line Cylinder Drain Canal Fill Valve Condensate Return Fill Cup Overflow Electrodes Internal Air Gap Drain Valve High Water Sensor External Air Gap Air Gap Current Sensor Driver Board ...

Page 54: ...level The NH EL repeats the fill and boil down cycle repeatedly to match output to demand Over time minerals in the water will adhere to the cylinder electrodes The humidifier will automatically fill to a higher water level to maintain full capacity during the life of the cylinder Eventually because of scale formation it will no longer be possible for the humidifier to reach its full capacity The ...

Page 55: ...ent over humidifying Temperature Setback In cold climates it is often necessary to reduce the humidity level in a space to prevent build up of condensation on the inside of exterior walls windows and trim It is highly recommended that the temperature setback function of the NORTEC digital controls be used under these conditions to prevent damage from condensation The digital control with an outdoo...

Page 56: ...53 Maintenance and Servicing SAM e Manifold Steam Line P Trap Condensate Drain Blower Pack Condensate Drain P Trap Steam Line Figure 42 SAM e Manifold Figure 43 Remote Blower Pack ...

Page 57: ...sons In order to access the menu level press the Menu icon and when prompted enter the password 0335 Enter Password Press the Menu button from the main status screen Enter the user level code 0335 Press the check mark to accept the entered password Main Menu From here you can access the Configuration Service Setpoint and Administrator submenus Select any sub menu by touching it on the screen Note ...

Page 58: ...e contents of the cylinder every 3 days regardless of demand or idle condition It can improve performance for water conditions with sediment or other contaminants Default Off Dfactor Increases or decreases the drain time used to control cylinder water conductivity It should not normally need to be adjusted A NORTEC representative will provide instructions if it should need to be adjusted Default 1...

Page 59: ...lt Off Short Cycle When On reduces the capacity if short cycling is detected This will reduce the possibility of short cycling Default Off Controls Submenu Control Settings allow you to set the type of external controls the humidifier is connected to In most cases the NH EL humidifier is factory configured to operate with the external controls that were specified for the site Source Configures the...

Page 60: ...owing is required One humidifier must be designated the master and all others as slave units The master unit must be the unit to which external controls including security loop are connected Each humidifier in the system including the master must have the range of demand signal in which it will operate configured Based on the setting of the Full Out and Zero Out the humidifiers can be configured t...

Page 61: ...em demand at which the humidifier should output its full capacity Default 100 Zero Out System demand at which the humidifier should shut off Default 0 General Submenu The General menu allows you to set the date time language units and general display settings Date Sets the date Enter MM DD YYYY Use arrows to move to digit you wish to change or press Delete to clear entry completely Press checkmark...

Page 62: ...e humidifier For information purposes only and cannot be changed by the user Modbus On The humidifier will connect to a Modbus network Additional Modbus parameters are only displayed if Modbus On Default Off Modbus Address The Modbus address that has been assigned to the humidifier on the network Default 10 Parity Sets the parity that the humidifier will use for communicating on the Modbus network...

Page 63: ... 47808 BMS Timeout Sets a maximum time the humidifier will wait with no communication from the BACnet network before a BACnet timeout warning is generated Exceeding the timeout also stops humidifier operation if the humidifier Source is set to BACnet in the Controls Menu Default 300s Nortec Online Enabled When enabled the humidifier will connect to Nortec Online Additional Online parameters are on...

Page 64: ...xport History Allows export of the service history to a USB memory stick plugged into the humidifier controller USB port The file can be sent to Nortec for analysis Input Diagnostics Displays a list of the humidifier s inputs and the current status value Output Diagnostics Displays a list of the humidifier s components and remote indication relays The components and relays can be activated for dia...

Page 65: ...cing 63 Required Maintenance 63 Cylinder Spent Warning Fault 64 Replacement Cylinder 65 Removing the Cylinder 66 Drain Valve Cleaning 67 Installing the New Cylinder 68 Extended Shutdown 68 Starting After Extended Shutdown 69 NH EL Maintenance Checklist ...

Page 66: ...s that the cylinder is spent it first displays a warning and turns on the yellow service LED The humidifier will continue to operate for another 72 hours after the warning is displayed Fault After 72 hours the humidifier will display a fault and shut down If a replacement cylinder is not yet available the humidifier can be temporarily put back into service by turning the humidifier off and on The ...

Page 67: ...el Identifies cylinder type in top left Always replace cylinder with the same model Replacement Cylinder The label on the existing cylinder identifies the cylinder type in its top left corner When ordering a cylinder always quote the three or five digit model number on the label the humidifier s serial number and the humidifiers voltage Serial number and voltage are located on the specification la...

Page 68: ...lose supply water shut off valve 3 Turn the humidifier On Off switch off 4 Turn off power to the humidifier with the external disconnect 5 Loosen the plumbing door screw and remove the door 6 Remove the cylinder plugs from the cylinder pins by pulling vertically 7 Using a flat screwdriver loosen the hose clamp where the hose is connected to the cylinder 8 Using a small flat screwdriver press the t...

Page 69: ...d and remove the solenoid from the valve 5 Loosen brass nut holding actuator to plastic housing with a wrench and disassemble actuator 6 Clean actuator components and valve housing inlet port outlet port and cylinder port Put new o ring that was supplied with new cylinder into valve 7 Reassemble actuator making sure tapered end of spring is oriented as shown in Figure 50 Drain Valve Actuator Assem...

Page 70: ...sor plug Spring loaded plugs should fit snuggly onto the cylinder pin Replace if they are loose or damaged 4 Replace the humidifier door and secure with door screw 5 Turn on power to humidifier with the external disconnect 6 Open supply water shut off valve 7 Turn the humidifier On Off switch to On 8 After the software has completed its start up self check reset the cylinder by pressing in the cyl...

Page 71: ...o the humidifier with the external disconnect 3 Turn the On Off switch to the On position 4 Drain the humidifier completely by pressing and releasing the manual drain button Wait until there is no water flowing to drain It usually takes less than 10 minutes 5 Follow the start up procedure in the chapter on Start Up Note As long as the NH EL is powered it will automatically drain the cylinder when ...

Page 72: ... shut off valve closed door removed Cylinder removed Drain valve removed cleaned new O Ring Drain valve installed ground wire attached New Cylinder Installed and hose clamps tight 12 in lbs for 7 8 steam hose and 16 in lbs for 1 steam hose New cylinder model Should be same as removed cylinder Cylinder plug colors match cylinder dots Cylinder plugs snug and in good condition High Water Sensor plug ...

Page 73: ...1 Troubleshooting Requirements 72 General Troubleshooting 72 Humidifier 73 Steam Distributors 74 SAM e 74 Blower Pack 74 Digital Humidistat 75 NH EL Warnings and Faults 75 Warnings 75 Faults 75 Clearing a Fault 81 NH EL Wiring Diagram Cylinder A 82 NH EL Wiring Diagram Cylinder B ...

Page 74: ... humidifier is installed on the inside of the humidifier door A generic copy of the NH EL wiring diagram is also included at the end of this chapter for reference purposes When contacting your local representative or NORTEC for troubleshooting assistance please ensure the serial number has been obtained for reference purposes CAUTION Be aware when troubleshooting that the humidifier is powered by ...

Page 75: ...ch out to override Caution The electrical and plumbing compartment contains high voltage components and wiring Humidifier will not humidify or not reaching RH setpoint 1 Security loop open 1a Check if Security loop Security loop is displayed on the humidifier s display 1b Check if there is 24 VAC at terminal 2 1c Check wiring and operation of On Off devices connected to terminal 1 and 2 Ensure the...

Page 76: ...nsure flow Relocate if required 3 Condensate line not sloped sufficiently 3 Sufficient slope to ensure flow is required Reinstall if required 4 Trap blocked 4 Check that water flows through trap Clear out if blocked 5 Condensate line double trapped 5 Condensate lines must not have two traps in sequence This can cause an air lock and prevent water draining 6 Steam line not insulated 6 If steam line...

Page 77: ...ace any damaged grommets Blower Pack Symptom Cause Corrective Action s Blower not operating Note Blower pack does not come on unless steam is being produced by the humidifier 1 No power to blower pack 1a Check power connection 1b Check blower pack fuses 2 On Off Thermostat not closing 2 Check wiring to thermostat replace if it does not close when it is exposed to steam Digital Humidistat Symptom C...

Page 78: ...played on the screen for information purposes and the humidifier continues to operate If the condition which generated the warning is eliminated the warning is cleared from the display While a warning is displayed the status LED is Yellow Faults If the humidifier is not able to self correct a problem symptom it will if necessary respond by shutting down When this occurs the humidifier illuminates ...

Page 79: ...Eliminate source of noise causing interference Control Signal Warning Fault No signal from RH control sensor No signal from RH Limit sensor 1 Sensor not powered 1 Use multimeter to check that sensor is powered 2 Sensor not wired correctly 2 Check wiring is secure and wired correctly per instructions in installation chapter 3 Defective sensor 3 Check if sensor output is corresponding to RH If not r...

Page 80: ... level in cylinder should rise faster than 1 per minute 1 Drain valve leaking or stuck open 1 Clean drain valve or replace see maintenance chapter 2 Water shut off valve closed 2 Open shut off valve 3 Fill Valve strainer blocked 3 Clean out strainer on fill valve inlet Red 4 High system back pressure 4a Check for kinked hose 4b Check for proper condensate removal see installation chapter 4c Instal...

Page 81: ...stall cylinder of same model number as was previously installed 4 Newly installed cylinder not reaching demand for extended time due to Low water conductivity 4a Add 1 4 teaspoon of salt to fill cup 4b Adjust drain factor to 0 7 in User Defined Settings see operation chapter 4c Turn on the Low Conductivity feature on page 56 Max Level Warning Water level at top of cylinder or foaming 1 Humidifier ...

Page 82: ...n 1 Normal operation for humidifier on network control Contact network administrator to enable humidifier RH High Warning RH higher than high RH setpoint 1 Setpoint higher than RH alarm setting 1 If the humidifier is still operating then check and adjust setpoints RH Low Warning RH Lower than low RH setpoint 1 Humidifier not running 1 Check why humidifier is not running and put it into operation 2...

Page 83: ...isconnected 3 Check that wire connected to J10 of Master and Slave and that polarity is not reversed 4 Incorrect wire type used 4 Use 18 24 AWG multi strand twisted pair shielded cable Unstable Control Warning Demand swinging from low to high rapidly 1 Improper Proportional and Integral settings in control 1 Adjust proportional and integral settings to reduce swings in demand signal 2 Control humi...

Page 84: ...NTROL BLOWER POWER SUPPLY CURRENT SENS LEV SENSOR LIMIT 10V F1 V IN IN 24V 24Vac 24 24 SL SL IN GND GND GND 1 2 3 4 R R R R R or or R R R R R bl bl br br G G G W W W B B B B B B B B Cylinder B Diagram 2569829 U U U U J15 J1 J2 J3 J6 J10 J12 J14 J19 J21 J23 J16 Master Slave Port ON ON For cylinder A identification DIP switch 1 and 2 must be in the OFF position Contactor Contactor Optional Fuses Fil...

Page 85: ...ND Circuit for Cylinder B A B C D E F CONTROL BLOWER POWER SUPPLY LEV SENSOR LIMIT 10V F1 V IN IN 24V 24Vac 24 24 SL SL IN GND GND GND R R R R R or or R R R R bl bl br br G G G G W W W W W B B B B B B B B B B External Internal External Internal Cylinder A Diagram 2569829 ON ON For cylinder B identification DIP switch 1 and 2 must be in the ON position Optional for drain water cooling Contactor Inl...

Page 86: ... used NH EL parts First locate the part you require in the illustration corresponding to your NH EL unit Find the item number in the first column of the table adjacent to the illustration Read across the table to the column which corresponds to the number of phases voltage and capacity of your unit To order parts or help in identifying the part you need contact your local Nortec agent ...

Page 87: ...Spare Parts 84 NH EL Plumbing Parts Figure 54 NH EL Plumbing Parts ...

Page 88: ...1 1 1 1 1 1 1 1 VALVE SINGLE FILL 1 2 L min 2573522 1 1 1 1 1 VALVE DUAL FILL 3 3 L min 0 5 L min 2574133 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 VALVE DUAL FILL 3 3 L min 1 2 L min 2574134 1 1 1 1 1 7 FITTING BRASS 3 4 BSP WASHER 1 2 NPT 2574137 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 8 CABLE TIE REUSABLE 1 400 CYL SZ X2 2574138 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 CYLINDER PLUG KIT QTY ...

Page 89: ...Spare Parts 86 NH EL Plumbing Parts Figure 55 NH EL Plumbing Parts ...

Page 90: ... 2 2 2 2 VALVE DUAL FILL 3 3 L min 2 0 L min 2574135 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 VALVE DUAL FILL 3 3 L min 3 3L min 2574136 1 1 1 1 1 2 2 2 2 2 7 FITTING BRASS 3 4 BSP WASHER 1 2 NPT 2574137 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 8 CABLE TIE REUSABLE 5 600 CYL SZ X2 2574139 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 CYLINDER PLUG KIT QTY 3 2573529 2 2 2 2 2 2 2 2 2 4 4 4 4 SUPE...

Page 91: ...Spare Parts 88 NH EL Electrical Parts Figure 56 NH EL Electrical Parts ...

Page 92: ...1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 IC ASSEMBLY NH EL SIM 2576572 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 IC ASSEMBLY NH EL 2570436 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7 DRIVER BOARD NH EL 2570437 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 8 SWITCH PUSH ON OFF 2569654 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9 SWITCH SPST 208 240V 1473010 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

Page 93: ...Spare Parts 90 NH EL Electrical Parts Figure 57 NH EL Electrical Parts ...

Page 94: ...ULT REMOTE OPTIONAL 2574171 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 IC ASSEMBLY NH EL SIM 2576572 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 IC ASSEMBLY NH EL 2570436 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7 DRIVER BOARD NH EL 2570437 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 8 SWITCH PUSH ON OFF 2569654 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 9 SWITCH...

Page 95: ...Spare Parts 92 Blower Pack Parts Figure 1 Blower Pack Parts Figure 58 Blower Pack Parts ...

Page 96: ...573806 1 3 Switch Assembly 2573807 1 4 Thermostat Assembly 2573808 1 5 Relay Assembly 2573809 1 6 Capacitor 8uF fastening nut included 2573810 1 7 Capacitor 20uF fastening nut included 2573811 1 8 Fan Assembly 2573812 1 9 Spare fastener kit included low voltage connector 2573813 1 10 Power Cable Connector and Cable together 2573814 1 ...

Page 97: ...Spare Parts 94 This Page Intentionally Left Blank ...

Page 98: ... shall be attached to THE COMPANY until said products have been paid for in full and then said liability shall be limited to the original purchase price for the product Any further warranty must be in writing signed by an officer of THE COMPANY THE COMPANY s limited warranty on accessories not of the companies manufacture such as controls humidistats pumps etc is limited to the warranty of the ori...

Page 99: ...U S A 826 Proctor Avenue Ogdensburg NY 13669 CANADA 2740 Fenton Road Ottawa Ontario K1T 3T7 TEL 1 866 NORTEC1 FAX 613 822 7964 EMAIL nortec humidity com WEBSITE www humidity com ...

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