Nortec RESDELUX User's Manual
Contents
1. 3 High Limit Duct Stat Mount the duct high limit humidistat downstream of the steam distributors far enough that under normal humidity and air flow conditions steam will have been fully absorbed typically at least 10 feet It must be located to sense high humidity only when uniform and representative air is over humidified or approaching saturation 4 Duct Air Proving Switch Mount the duct air proving switch so that it is able to sense air flow or lack of it Wire it to close when air flow is sensed and open when air flow fails 5 Check operation of all on off controls before starting the humidifier Note For wiring interface with a fan see wiring diagram provided on page 13 Steam humidifier will turn on fan when increase in humidity is required OPERATION INTRODUCTION The NORTEC RESDELUX humidifier is designed to provide clean steam humidification at an economical price It utilizes NORTEC s patented electronic Auto Adaptive internal control system for high efficiency and low waste of water and electricity RESDELUX OPERATION When the humidifier is first turned on the controller starts with a self test procedure which takes about 10 seconds The test consists of activating for a short time the drain valve fill valve and power relays The sound of the working solenoids is an indication of valves operation Green and yellow lights flash during this time If there is no call for humidity the humidifier i2. External wiring sizes must be in accordance with national and local electrical codes and by laws 6 Wiring is fed through holes in the bottom of the cabinet to terminal blocks respective to the supply voltage being used see Figure 12 ELECTRICAL REQUIREMENTS FOR THE CORD CONNECTED MODEL RESDELUX C 1 The external wiring must comply with local and national electrical codes and must be installed by a qualified electrician If you have any questions regarding the following instructions contact a qualified electrician 2 Check available power supply and resolve any wiring problems BEFORE installing and operating the unit 3 The 120 volt humidifier operates on 11 5 or less amps and may be used in any properly wired general purpose household receptacle See Table 2 for specifications for individual branch circuit requirements Table 2 Suggested Individual Branch Circuit Nameplate Amps 11 5 AWG Wire Size 14 AWG American Wire Gauge Based on copper wire at 60 C temperature rating 4 For your safety and protection this unit is grounded through the power cord plug when plugged into a matching wall outlet If you are not sure whether your wall outlet is properly grounded please consult a qualified electrician 5 The wall outlet you use must match the plug on the units power cord and must be within reach of the installed unit DO NOT use a plug adapter or extension cord with this product See Table 3 for receptac
3. O te PRINTED IN CANADA
4. due to partially blocked or poorly installed drain lines 2 The drain line should not drain into a sink used frequently by personnel or where plumbing codes prohibit it Route to a floor drain or equivalent for safety reasons since drain water from humidifier can be very hot 3 Keep drain lines as short as possible Keep drain lines sloped down not level and not up since low spots in drain lines will accumulate sediment and cause backup The drain line should be 7 8 O D copper pipe or larger Do not use plastic pipe for drain lines 4 Each drain line from these humidifiers must be routed without dips or sags to terminate above the flood level rim of a city approved indirect waste receptor ELECTRICAL ELECTRICAL REQUIREMENTS FOR PERMANENTLY CONNECTED RESDELUX 1 Check and ensure that available voltage and phase corresponds with operating voltage and phase of the humidifier as indicated on the humidifier nameplate label see Figure 12 2 Ensure that an adequate power supply is available to carry full humidifier amperage drawn as specified by rated amps on the humidifier nameplate label refer to local codes Figure 13 Primary Voltage Supply Wiring for Hard Wired Installations 3 A dedicated external disconnect must be installed Do not exceed the maximum circuit protection amps as indicated on the nameplate label 4 Connect ground wire to cabinet ground clamp Do not use the neutral wire as a ground 5
5. flow not required when using blower pack kit Figure 14 External Wiring Of On Off Controls External li NORTEC offers various versions of A Band C to suit each application In general A is essential for in space applications C is essential for induct applications whereas B is highly recommended in ducted applications 2 Field wiring from the humidistat to the humidifier and between devices should be a minimum of 18 AWG and kept as short as possible 3 Low voltage control terminal strips are provided in the electrical compartment Internal sides are factory wired External sides are for field wiring See Figure 14 4 Each humidifier is supplied with a wiring diagram inside Control Installation 1 Wall Humidistat Mount any wall humidistat control or high limit over the standard electrical box at a height similar to a typical thermostat Any wall humidistat should be in a location representative of overall space being humidified and not in the path of the blower pack or air supply grille Do not mount on an outside wall where temperature fluctuation can affect the control response 2 Duct Humidistat Mount the duct humidistat In a location representative of overall air humidity usually the return duct Do not mount it directly in front of the steam distributor or in a turbulent or mixing zone Mount it where the air s humidity and temperature are uniform and representative of spaces being humidified
6. humidistats in accardance with wiring diagram could permanently damage the electronics Such eros will void the warranty Cabling between humidistat and unit should be 18 AWG 2 ei Note Duct sensor used 1 eno __ onlywith On Off Duct Humidistat 3 o Package Part 2520273 PO A Duct Other On Off HRD Ca controls wired Su na Note Remove jumper between 1 amp 8 for Outdoor Temperature Reset EXT 2 nt Resdelux Terminal Strip Refer to Terminal Number Reference for terminal numbers WID Nortec On Off Digital Humidistat Diagram 2524678 RevA www humidity com December 6 2006 _ 14 SPARE PARTS LIST AND EXPLODED VIEW RESDELUX Item Number Part Number Description 1 151 9002 Cylinder type 202 2 158 1820 Steam distributor kit 3 153 5062 Steam distributor 4 158 1830 Steam blower pack 5 158 1821 Steam Hose 4 long 6 158 7104 Cabinet front door T 185 3104 Lock assembly with keys 8 145 6000 Drain valve complete 8a 145 5002 Screw Drain Valve 9 132 6002 Drain valve coil assembly 10 132 6004 Drain valve o ring 11 131 3244 Fill valve assembly 11a 145 5000 Fill valve gasket only 11b 145 5004 Fill valve screw 12 149 5072 Brass fitting with gasket 12a 132 6129 Elbow 13 158 1450 Fill cup assembly kit with hoses and clamps 13a 142 1050 Fill cup 13b 132 8850 Condensate hose small d
7. 8 DJEAMEYLINDEM cio onda i a AAA 8 WHEN TO REPLACE THE STEAM CYLINDER 2 004 8 HOW TO REMOVE THE STEAM CYLINDER 0 0 a 9 HOW TO INSTALL THE REPLACEMENT CYLINDER 9 MANDATORY CLEANING OF THE DRAIN VALVE 0 2 2 2 2 0048 10 EXTENDED SHUTDOWN lt lt ambala de be ek mr eed ED 10 TROUBLESHOOTING 11 DIAGNOSTIC PROCEDURES TROUBLESHOOTING La 11 PROCEDURES AND TERMS USED IN DIAGNOSING e e 12 PRINCIPLE OF OPERATION 22444422648 ea eee ee ue au ta ue 12 PILLARS kaha ee ee ae eRe kaskada ee aA een ae eee ea ee 12 DRAIN IME m 25 ee kee ae ee RA Pee nad 12 RATED AMPERS 22475 eR eee yeah tee LR 12 SHORT CYCLING s s w a eso sand eee dna es hi g 12 FOAMING a6 ee ee Cee e bee Be ed eae eee hi 12 BACKPRESSURE ssw sa wesa LR 12 MONITORED L G so FERIALI 12 RESDELUX WIRING DIAGRAM a lt 52 sun g Am e e ee ee e ew 13 SUGGESTED WIRING INTERFACE FOR FAN CONTROL 22 daba me eee eee wd 14 SPARE PARTS LIST AND EXPLODED VIEW 6034200 ded Ee we eee bes 15 16 PERIODIC MAINTENANCE CHECKLIST 0 17 INSTALLATION RECEIVING amp UNPACKING EQUIPMENT Check packing slip to ensure ALL material has been delivered All material shortages are to be reported to NORTEC within 48 hours from receipt of goods NORTEC assumes no responsibility for any material shortages beyond this period Inspect shipping boxes for damage and note on shipping waybill according
8. ET CHAMBER ELECTRODES 2 FILL CHAMBER 3 WATER OVERFLOW CHAMBER SAFETY DRAIN IN CASE OF FILL VALVE CONTROL BOARD FAILURE CYLINDER STRAINER TAP WATER SUPPLY a DRAIN CONNECTION OPEN TO ATMOSPHERE DRAIN CANAL A flashing yellow light indicates a fault of the humidifier and the controller shuts off the humidifier Please refer to troubleshooting section For periods of time with no call for humidity longer than 2 days the humidifier automatically drains water from cylinder MANUAL CAPACITY ADJUSTMENT The RESDELUX humidifier is rated in Ibs hr of steam output capacity Set to 100 it will operate at full output until the humidistat has sensed that the humidity has reached setpoint it will then stop when the control circuit 1 2 is interrupted See Figure 13 If the humidifier is oversized the humidistat will be quickly satisfied less then 10 minutes and stop the humidifier As the humidity level drops the humidistat starts the humidifier again It is quickly satisfied and stops again The resultant short cycling can be easily overcome A manual capacity adjustment potentiometer is provided on the RESDELUX main PC board to increase the runtime to about 15 minutes It is marked CAPACITY ADJUSTMENT and is adjustable from 25 to 100 of operating rating OTHER POTENTIOMETERS Do not adjust any other potentiometers on the PC board They are factory set and not to be adjuste
9. INSTALLATION 1 The length of the steam hose must not exceed 4 1 2m 2 It must not be restricted in any way i e a kink resulting from a short radius bend Figure 8 Steam Hose Routing Avoid Water Traps Avoid kinks Proper Slope AN Gentle Sweeping Turns 3 Avoid condensate traps in the hose see Figure 8 4 Use wall clips p n 158 5001 to support the steam and condensate hoses and maintain 1 clearance from the wall The connection can also be made with copper pipe with 1 thermal insulation rated for 215 F 101 C CONDENSATE HOSE supplied Under normal circumstances when the steam distribution nozzle is above the top surface of the humidifier the condensate hose is routed back to the top of the humidifier and fed through the opening provided to the fill cup Cut the ends diagonally and simply insert 72 in the appropriate hole in the top of the humidifier Install a 3 8 copper tubing trap at the lowest point in the condensate system Connect to the hose with a clamp Figure 6 BLOWER PACK CONNECTION The RESDELUX humidifier can be purchased with an optional blower pack for direct room humidification The blower pack is field installed on the RESDELUX humidifier cabinet or located remote from the RESDELUX humidifier The blower pack is powered directly from the RESDELUX control board It cannot be powered separately On a call for humidity blower fans are powered and remain powere
10. O RESDELUX md Nortec Steam Humidifiers Installation Operation Maintenance and Troubleshooting Guide IMPORTANT READ AND SAVE THESE INSTRUCTIONS This guide to be left with equipment owner 1505691 B Table Of Contents INSTALLATION 1 RECEIVING 8 UNPACKING EQUIPMENT 2 0 00000000 2 ee 1 PRE INSTALLATION CHECKPOINT LL 1 HUMIDIFIER CONFIGURATION aaa ser ra hihi a vaj 1 LOCATION amp MOUNTING 5 ele s we a 1 HUMIDIFIERS 44644484 kaaa dae bbe Bw a a a 1 STEAM DISTRIBUTOR NOZZLE in duct location a ra 048 2 STEAM HOSE INSTALLATION 3 CONDENSATE HOSE supplied e 3 BLOWER PACK CONNECTION 44 arr k sh awe beau e Hew 3 CABINET MOUNTING THE BLOWER PACK LL 3 REMOTE MOUNTING THE BLOWER PACK 0 000005 4 P HUMBING 0 es 3502 a ea a i SS es biro FRE SA DE a D WATER SUPPLY LINE 5320 00 ho Di Leida D DRANENE se da oa oe eae ee he ee SSE agda ee s ELECTRICAL EP EE EE EE 6 ELECTRICAL REQUIREMENTS FOR PERMANENTLY CONNECTED RESDELUX 6 ELECTRICAL REQUIREMENTS FOR THE CORD CONNECTED MODEL RESDELUX C 6 LOW VOLTAGE CONTROL WIRING AND INSTALLATION 2 6 CONTIROLVWIRING so gt oo roses apir p rasa os 6 CONTROL INSTALLATION LL T OPERATION 7 INTRODUCTION 3 u aa ee ee ve ee a naa a 7 RESDELUX OPERATION saaa a o Ra ew Aba AAN 7 MANUAL CAPACITY ADJUSTMENT LL 8 OTHER POTENTIOMETERS ps did hit 8 MAINTENANCE
11. SHOOTING PLEASE READ THIS SECTION BEFORE REFERENCING SPECIFIC DIAGNOSTIC MESSAGES 1 Ensure the installation detail conforms with the recommendations contained in the Installation section of this manual Understanding the Principle of Operation is an is provided in the section titled OPERATION For a more detailed understanding please contact your NORTEC representative 3 When contacting your local representative or NORTEC for troubleshooting assistance please ensure the serial number has been obtained for reference purposes 4 Whenever the troubleshooting steps indicate a problem with the main PCB first check all connections at the main control board asset when troubleshooting A basic description DIAGNOSTIC PROCEDURES TROUBLESHOOTING The RESDELUX controller provides a number of messages to simplify troubleshooting procedures The following table presents fault messages displayed by the controller their meaning and possible corrective actions Refer to the following section for detailed information about terms used in the table Table 4 Troubleshooting Guide Unit Status Lamp Yellow Green Symptom Corrective actions On On Maximum water level This usually happens on initial start up after replacing the cylinder inside cylinder normal Water is concentrated with minerals inside the cylinder Let unit run yellow light will disappear when the unit is at full output Th
12. apacity Adjustment Setting than 3 minutes 100 50 25 Water Conditions vs Cylinder Life 3 When completely drained push the main ON OFF DRAIN switch back to the OFF position N 4 Once drained disconnect all power supplies to the unit O YN YN oO O U L u O YN E U e O CaCO mg L ppm 5 Open the front cover door 6 Cylinder plugs are attached to the primary voltage cylinder wires Remove cylinder plugs 1000 2000 4000 8000 i i i j Cylinder Life Expectancy from cylinder pins by pulling vertically average operating hours 5 500 7 Using a slotted screwdriver loosen the steam hose clamp s and pull the steam hose off the HOW TO REMOVE THE STEAM CYLINDER cylinder vertically It is advisable to keep a spare cylinder in stock 8 The cylinder is now ready to be lifted out of the throughout the humidification season When ordering unit CAUTION Cylinder and any undrained a replacement steam cylinder always quote the three water might still be HOT or five digit model number on the label applied to the 9 Remove the used cylinder as previously described NORTEC does not recommend the Figure 17 use of any acid solutions to clean the used Cylinder Replacement cylinder Always replace a used cylinder HOW TO INSTALL THE REPLACEMENT CYLINDER 1 Reverse procedure should be followed to install a new cylinder Main power supply to the unit must be disconnect
13. ater contained in the cylinder increased Foaming is normally caused by short cycling a restricted drain or back pressure The foam generated in these instances is conductive and may lead to a false full cylinder indication if the level of the foam approaches the top of the cylinder BACKPRESSURE Restriction of steam flow caused by improperly sloped steam lines elbows changing the direction of the steam flow from horizontal to vertical without a condensate drain leg and any plumbing detail allowing the accumulation of condensate MONITORED LEG Refers to the primary wire to the cylinder which loops through the current sensing device on the main PCB This wire is terminated at the red cylinder plug at the cylinder 110 120 Vac Hookup 208 240 Vac 110 120 Vac Hookup CORD CONNECTED GND LIN 2 END LIN L2 SKIES MODEL RESDELUX MODEL RESDELUX C ON OFF pren one ents a sense esse utes an nee st CONTROLS LIN L2 pma A A TOOTS LANE dp e VISITS INTERNAL T i LOW VOLTAGE ee O DN E E NT i ad EEA soka TERMINAL STRIP STEP DOWN TRANSFORMER BE DA CONNECTION STATUS GREEN gt YELLOW RESLDELIJA WIRING DIAGRAM No 2524679 Rev A December 6 2006 www humidity com NORTEC DIGITAL ON OFF HUMIDIS TAT WIRING DIAGRAM Use for Resdelux Part Description 2520259 Digital On Off Wall Humidistat 2520273 Digital On Off Duct Humidistat Package Warming Failure to wre the
14. 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 Walter Meier s manufacture such as controls humidistats pumps etc is limited to the warranty of the original equipment manufacturer from date of original shipment of humidifier THE COMPANY makes no warranty and assumes no liability unless the equipment is installed in strict accordance with a copy of the catalog and installation manual in effect at the date of purchase and by a contractor approved by THE COMPANY to install such equipment THE COMPANY makes no warranty and assumes no liability whatsoever for consequential damage or damage resulting directly from misapplication incorrect sizing or lack of proper maintenance of the equipment THE COMPANY retains the right to change the design specification and performance criteria of its products without notice or obligation Model Serial Cylinder Cylinder Last Replaced MTH DAY YR MTH DAY YR MTH DAY YR E6518 Walter Meier Climate USA Inc 826 Proctor Avenue Ogdensburg New York 13669 Walter Meier Climate Canada Ltd 2740 Fenton Road Ottawa Ontario K1T3T7 Tel 866 NORTEC 1 Fax 613 822 7964 nortec humidity com www humidity com FAE NI NR L enilicate Wea 24
15. d for about two minutes after steam production is interrupted Cabinet Mounting of the Blower Pack The RESDELUX blower pack comes with a basic hardware kit The kit contains all the hardware required to cabinet mount the blower pack NOTE Mounting of the blower pack must be performed before the RESDELUX humidifier is installed and wired 1 Remove the RESDELUX humidifier and blower pack from their shipping boxes 2 Place the RESDELUX humidifier upright on a flat surface 3 Remove the 7 8 knockout on the top of the RESDELUX humidifier There are two knockouts select the one closest to the large Opening Put the power leads from the blower pack through this opening as you position the blower pack on top of the RESDELUX humidifier Push the blower pack forward until the locating tabs on the bottom of the blower pack with slots in the top of the RESDELUX push forward to engage Use two Phillips screws with star washers in the Blower Pack screw support tabs to secure to the RESDELUX unit Remove the front door and service cover from the RESDELUX humidifier Connect the power leads for the blower pack to terminal P7 on the RESDELUX control board located next to the capacity adjustment potentiometer Use the short piece of steam hose and hose clamps supplied with the basic hardware kit to connect the steam cylinder to the blower pack steam distributor Installation of the blower pack is now complete For inst
16. d in the field MAINTENANCE As with all automatic and mechanical devices humidifiers require periodic maintenance and servicingeither by the user or competent service personnel to provide continued customer satisfaction longer equipment life and reduction in customer cost WARNING DISCONNECT THE UNIT FROM THE POWER SUPPLY BEFORE SERVICING The plumbing and electrical compartments contain high voltage components and wiring The access door is equipped with a lock Access should be limited to authorized personnel only Note Review periodic maintenance Checklist on page 16 STEAM CYLINDER WHEN TO REPLACE THE STEAM CYLINDER After a period of operation not on initial startup the water level will approach the top of the cylinder Life varies from 500 to 2000 operating hours as cylinder or quote the unit s serial number model and illustrated in Figure 16 voltage located on the spec label nameplate The RESDELUX control board constantly monitors 1 Turn off the water supply to the unit unit performance and will shut down the humidifier and alert the customer to change the cylinder The yellow 2 The used cylinder must be drained completely light will flash 4 times in sequence before removal If the water has just been boiling allow it to cool before draining Push the Figure 16 ON OFF DRAIN switch to the MANUAL DRAIN position Leave it in this position just long enough to drain the cylinder usually not longer C
17. ed until the cylinder is completely installed and reconnected 2 The cylinder plug wires are color coded in accordance with colored dots beside the electrode pins on the top of the cylinder Figure 18 Reassembly Of The Drain Valve And Fill Valve Actuator Male Slip on Connection Tabs Plunger Spring AR AA iii Holding Coil 3 This color coding must be adhered to when replacing cylinder plugs on pins 4 The electrode plug with the orange wire always goes on the single pin surrounded by a plastic shoulder 5 Ensure that cylinder plugs fit snugly on the pins 6 Ifa cylinder plug becomes loose the cylinder harness must be replaced P N 158 1305 see parts list MANDATORY CLEANING OF THE DRAIN VALVE Always clean the drain valve before installing a new cylinder since the valve port may be as dirty as the used cylinder 1 Note the ring terminal for drain valve green ground wire is sandwiched between the drain valve body and drain pan 2 Remove the two screws securing drain valve body to the drain pan Disconnect the two slip on terminals from the two tabs on the 24 Vac drain valve coil 3 Remove the hose clip and hose connection from drain valve body 4 The drain valve assembly is now free to be taken to a sink for disassembly and cleaning 5 Remove the snap fit red cap from the coil assembly and slide coil off the actuator 6 Loosen the actuator with a wrench and unscrew from the plast
18. er NORTEC does not accept responsibility for installation code violations 1 Location of the humidifier should be below and as close as possible to the steam distributor location or blower pack Net output will be reduced as a result of heat loss through long steam hose 2 See Figure 2 for front clearance requirements for access during installation maintenance and troubleshooting Figure 2 Clearance Requirements NOTE Local and national codes may deviate Please consult applicable codes for clearance requirements Min 36 Frontal Clearance 3 Where possible mount humidifier at a height convenient for servicing 4 To mount the humidifier use two 8 screws 2 long and secure into a standard 2 X4 wood stud or equivalent structure Figure 3 l nozzle will have to be mounted from the inside of Wall Mounting Detail the duct Remove internal insulation material if necessary See Figure 5 Figure 5 Steam Distribution Nozzle Mounting Arrangement GI so max Duct Wall Fasten Humidifier To Wall Using Screws 2 long 2 supplied by other 12 1 30 7cm Thickness 5 Make sure humidifier is level Mounting Mounting From Inside From Outside 6 DONOT mount humidifier on hot surfaces 3 When the steam distribution nozzle is located 7 DONOT mount humidifiers in an area where above the top surface of the humidifier The freezing may occur nozzle must be at least 1 ft 305 mm ab
19. ia 13c 132 8860 Condensate hose medium dia 13d 132 5023 Clamp small house 13e 132 5035 Clamp medium hose 14 132 1216 Drain canal round 14a 132 5064 Screw drain canal 15 163 1026 Gasket for round drain canal 16 158 3511 Power control board provide unit serial number when ordering 17 150 1491 Transformer 120 24 Vac 18 158 3126 Fuse 1 5A 19 132 3097 On Off Drain switch 20 158 1309 Wire harness drain amp fill valves 21 158 1305 Wire harness cylinder complete 21a 135 4012R Cylinder plug RED 21b 135 4012B Cylinder plug BLACK 216 1352 4012 VV High water sensor pin 22 158 1311 Power Supply 23 158 1312 Blower Fan Assembly 24 150 2326 Wire extension for blower pack Not Shown 132 8810 Steam Hose Specify Length Not Shown 158 5001 Steam and condensate hose support bracket Specify Quantity Not Shown 132 8841 Condensate Line Specify Length 15 4 YQ DEL 7 lt NG D i 0 i T X AN Q O V f N Ny A PERIODIC MAINTENANCE CHECKLIST PREVENTIVE MAINTENANCE AND SERVICE CHECK LIST FOR NORTEC S RESDELUX Customer Address Equipment Location Serial Date Last Inspected Date of this Inspection Inspected By Humidifier Company Name Model Number Inspect Check Clean and Adjust all items listed STEAM GENERATORS kakaa nakana kaaa aaa aaa aaa aaa aaa aaa O Replace cylinder check drain valve and fill valve SUMP AND DRAIN LINES m Clean s
20. ic valve body 7 Clean the exposed core spring and plastic drain valve port 8 The tapered end of the spring must be installed toward the solenoid Reassemble and tighten the actuator 1 4 turn past hand tight 9 Clean out the end of the hose then reconnect it to the drain valve body with the clamp 10 Inspect the o ring to make sure it is in good condition 11 Fit mounting screws through the drain valve body one through the ring terminal on green ground wire 10 12 Push the two slip on terminals back onto the two tabs on the coil The terminals although not identical are reversible WARNING To prevent the possibility of electrical shock the green ground wire must be reinstalled before power is restored EXTENDED SHUTDOWN Before disconnecting power to the humidifier at the end of humidification season ALWAYS DRAIN the cylinder first Otherwise the electrodes are subject to harmful corrosion which shortens cylinder life Do NOT leave the switch in the DRAIN position indefinitely as the drain coil could burn out Leave the switch in the OFF position and open the main external fused disconnect to stop power to the humidifier Close the shut off valve in the water supply line feeding the humidifier Lock the cabinet door s to prevent unauthorized tampering All doors are factory supplied with keyed locks DO NOT LEAVE THE KEY IN THE LOCK ACCESS SHOULD BE LIMITED TO AUTHORIZED PERSONNEL ONLY TROUBLE
21. is may take a day or two Off Off No power to the Check for main power supply fault board Turn power switch to Drain position If drain valve is activated sound of solenoid check connection to the board or board itself When no sound present check fuse replace with 1 5A if needed transformer voltage should be present between fuse holder and ground screw 1 flash Off Over current Check drain valve operation drain time possible drain restrictions sequence Operating Zero Check if fill valve leaks not holding supply water pas Li Back pressure may also cause very conductive water conditions ene Li Er S Was the humidifier short cycling cylinder drain valve Check for short cycling on for 10 min 2 flashes in Off No current Check water level in the cylinder should be more than full If not sequence detection for 30 check fill rate 24 VAC voltage on fill valve terminals unit must be minutes with on with call for humidity green light steady on Verify fresh water continuous call for supply to the humidifier Leaking drain valve can be at fault humidity minerals blocking the plunger If cylinder is more than full check primary power connections to the cylinder continuity of wires to cylinder Are power wires connected to proper terminals on the cylinder Color coding Possibly wrong cylinder type Low water conductivity 4 flashes in Off End of cylinder life Check water level in the cylinder should be abo
22. le and breaker information Table 3 Receptacle and Fuse Types Rated Volts 115 Amps 15 Wall Outlet Fuse Size 15 Time Delay Fuse Plug Type or circuit breaker LOW VOLTAGE CONTROL WIRING AND INSTALLATION Control Wiring Controls are available from NORTEC as accessories If controls were not ordered with the humidifier they must be supplied by others The following information is relevant to all controls factory supplied or otherwise A B and C see Figure 14 or any on off controls are to be wired in series only one path for current across terminals 1 and 2 on the low voltage control terminal Caution This is the common wire from the transformer that is connected to the ground It will short on off control loop if it touches a grounded metal surface A Wall or Duct Mounted Control On Off Humidistat Wired to close when there is a drop in humidity and open when the setpoint is reached Set to desired RH B Duct Mounted Safety High Limit On Off Humidistat if used Wired to close when there is a drop in humidity and open when the safety setpoint is reached Set to approximately 85 RH as a safety to help prevent saturation and wetting in the duct not required when using blower pack kit C Duct Mounted Safety Air Proving On Off Switch if used Wired to close when sensing air flow and open when no air flow is sensed Used as a safety to prevent saturation of the duct when there is no air
23. ly After unpacking inspect equipment for damage and if damage is found notify the shipper promptly All NORTEC products are shipped on an F O B factory basis Any and all damage breakage or loss claims are to be made directly to the shipping company PRE INSTALLATION CHECKPOINT Ensure that available voltage and phase corresponds with humidifier voltage and phase as indicated on humidifiers nameplate label Ensure that the dedicated external disconnect switch is of sufficient size to handle the rated amps as indicated on the nameplate label Refer to local codes Report any discrepancy immediately Figure 1 RESDELUX Series Humidifier Condensate Return Steam Outlet Nameplate Label gt Power And Control Wiring Drain Water Supply HUMIDIFIER CONFIGURATION To avoid any danger never operate the humidifier with a door off To open the door use the key to unlock lift door up slightly and pull door forward LOCATION amp MOUNTING HUMIDIFIERS RESDELUX Series humidifiers are designed to mount on a suitable wall or vertical surface Do not sit on the floor due to additional clearances required for plumbing electrical and control access holes The clearance dimensions shown in this manual are for reference only and are the minimum required for maintenance of the humidifier Local and National Codes should be consulted prior to final location and installation of the humidifier Walter Mei
24. ne what caused the strainer or drain valve to clog in the first place Do not assume that if a strainer and or drain valve is clogged that itis to blame If the external drain has been impeding flow then waste accumulates resulting in a clogged strainer or clogged drain Clean the drain valve and install a fresh cylinder Then measure the manual drain time with and without the external drain connected Is the external drain impeding flow NORTEC recommends an open external drain line See the Installation section of this manual RATED AMPERS This refers to amps listed on the humidifier specification label a SHORT CYCLING When the on time of the humidifier is less than ten minutes upon a call for humidity To correct short cycling all humidifiers have a capacity adjustment which allows the output of the humidifier to be reduced as low as 25 of rated output thus extending the on time required to maintain output Excessive short cycling may cause higher water conductivity mineral content than designed for the unit FOAMING A phenomenon which can occur in water when impurities already in the water reach an excess concentration as result of boiling away pure water and the continued boiling action agitating the contained water The humidifier electronics are designed to prevent this occurrence although in extreme cases water will foam with little concentration making it necessary to have the drain time of the w
25. on the top of the RESDELUX humidifier and insert the closed finger grommet into the opening Put the power leads from the blower pack through this opening If the wire leads are not long enough field splice the additional requirement or get a wire extension kit P N 1502326 available from NORTEC Figure 10 Steam Absorption Distances Steam absorption space size in inches for ambient humidity 30 RH room temperature and selected steam outputs of RESDELUX humidifier NOTE Improper wiring could damage the blower pack or RESDELUX PCB 9 Remove the front door and service cover from the RESDELUX humidifier 10 Connect the power leads for the blower pack to terminal P7 on the RESDELUX control board located next to the capacity adjustment potentiometer 11 Replace the electrical service cover and front door Once the power is restored the RESDELUX humidifier is ready for service PLUMBING For humidifiers installed in some cities including the City of Los Angeles A city approved spring loaded double ball CHECK VALVE must be supplied and installed by contractor on each of the potable water inlets to each humidifier Recommended valve manufacturer Watts Regulator phone number 508 688 1811 Size Depending on supply line 1 4 3 8 or 2 NPT inlet and outlet Model 7 All water supply and drain line connections should be installed in accordance with local plumbing codes WATER SUPPLY LINE 1 The Humidifie
26. ove the top surface of the humidifier Locate the steam 8 DO NOT mount humidifiers on a vibrating surface hose so that it slopes at an angle of at least 20 Figure 6 10 DO NOT mount the humidifier to a duct or plenum Figure 6 STEAM DISTRIBUTOR NOZZLE in duct location Steam Plumbing Arrangement Above Humidifier 1 When installing the steam distribution nozzle of the RESDELUX humidifier it must be located in the supply duct at least 4 feet from any obstructions such as bends fans filters etc to prevent wetting see figure 4 Figure 4 Steam Distributor Nozzle in Duct Location Humidifier To be 2 50mm longer then duct static pressure or minimum NHB NHP NHMC RESDELUX ONLY 4 Steam distribution nozzle below top surface of humidifier The steam hose must first rise to the minimum height of 1 ft 305 mm above the top surface of the humidifier and thereafter slope a minimum 5 in a uniform manner toward the nozzle A separate drain line must be provided for condensate that collects at the steam distribution nozzle Figure 7 2 The steam distribution nozzle can be mounted in the bottom wall or on the vertical walls of the duct If the duct wall is more than 3 4 20 mm thick the Figure 7 Steam Plumbing Arrangement Below Humidifier Nortec Humidifiers All Models To be 2 50mm longer then duct static pressure or minimum min 20 Nortec Humidifiers All Models STEAM HOSE
27. r is intended to operate on potable cold tap water 2 Ifthe raw water is very hard NORTEC can provide longer cylinder life on softened water however softened water is more conductive and Figure 11 Drain Connection NOTE Steam hose should not reach bottom of the funnel Jo ClampAnd 7 8 1 D Hose Factory Supplied Drain Canal Air Gap lt q 7 8 O D Copper Pipe Or7 8 1 D l Copper Reducer To Hose Not Supplied ServeAs Funnel Drain By Others Min 11 4 OD more corrosive Some hardware changes may be required at the time of order or in the field 3 DO NOT supply hot water to the humidifier Minerals will adhere more easily to surfaces and the fill valve s small flow regulating orifice could become plugged 4 ALWAYS supply and install a shut off valve in the water supply line dedicated to the humidifier to facilitate servicing Use 7 O D copper to within 4 feet of the humidifier Reduce copper to 1 4 O D and connect to the factory supplied 1 4 olive compression fitting under the humidifier Figure 12 Drain Pump if necessary Humidifier 7 Drain Canal E Drain Line 142 9527 Surface 4 DRAIN LINE 1 The humidifier is equipped with a 7 8 O D unthreaded horizontal drain outlet from the drain canal on the bottom of the humidifier A field supplied funnel or reducer see Figure 11 is recommended It will prevent backup in the drain pan and in the cylinder
28. ructions on mounting the RESDELUX humidifier please see the location and mounting section Figure 9 Blower Pack Cabinet Assembly Remote Mounting of the Blower Pack 1 The remote mounted blower pack should be located at least 7 off the floor to prevent the discharged steam from coming in contact with pedestrian traffic or any obstruction When installing the remote blower pack ensure the primary voltage to the RESDELUX has been switched off at the electrical panel or that it is unplugged RESDELUX C Find a suitable location for mounting the remote blower pack The surface should be flat with adequate clearances for the top side and front Table 1 Clearances of Remote Mounted Blower Pack Minimum Ceiling Minimum Side Minimum frontal Clearance Clearance Clearance inches cm inches cm inches cm 18 45 18 45 60 150 Minimum slope of steam hose is 20 Steam lines longer than 5 ft require condensate trap installation see Figure 6 RESDELUX blower pack has two teardrop or keyhole openings on the back of the cabinet for mounting purposes They are located 8 Y apart and 1 from the top of the blower pack cabinet Measure the screw locations and use two 8 screws 2 long The screws should be anchored in a standard 2 x 4 wood stud or equivalent to ensure adequate support of the blower pack and connecting steam hose Remove the 7 8 knockout
29. s standing by and green light flashes When control loop is closed the green light is steady on and the humidifier starts its operation The controller waits 10 seconds before energizing the on board relays When the relays energize heating voltage is delivered to the cylinder After a 30 second delay the fill valve is activated if the output from the cylinder is below 100 If controller detects increase of amperage above allowed range the unit will activate drain valve for 2 seconds During operation the controller measures the rate at which water is converted to steam and thus the mineral content of water inside the cylinder When this rate exceeds the design optimum a drain of the cylinder takes place The amount of water drained is just enough to keep the contained water at design levels During start up when mineral content in the water is low water will reach the top of the cylinder at which point the yellow indicator light will come on This is normal operation with a fresh cylinder After a period of time the water level will drop and the yellow light will turn off High water level in the cylinder also indicates that the cylinder is near the end of its service life as electrodes become coated with minerals The yellow light coming on more often would be the first indication of approaching the end of the cylinder life Figure 15 Operation Schematic CONDENSATE RETURN OPTIONAL STEAM HOSE 1 INL
30. ump and drain lines and make sure drains and drain lines are free of restrictions Check for leaks and proper water level STEAM DISTRIBUTON ei O Check steam line sloping no leaks no condensate around blower pack or distribution nozzle oj E A O Humidistat check for proper operation All electrical terminals for tightness Disconnect switch check operation KEY DJ Okay C Needs Additional Service C Repair or Replace Remarks I LIMITED WARRANTY Walter Meier Inc and or Walter Meier Ltd hereinafter collectively referred to as THE COMPANY warrant for a period of two years from date of shipment that THE COMPANY s manufactured and assembled products not otherwise expressly warranted with the exception of the cylinder are free from defects in material and workmanship No warranty is made against corrosion deterioration or suitability of substituted materials used as a result of compliance with government regulations THE COMPANY s obligations and liabilities under this warranty are limited to furnishing replacement parts to the customer F O B THE COMPANY s factory providing the defective part s is returned freight prepaid by the customer Parts used for repairs are warranted for the balance of the term of the warranty on the original humidifier or 90 days whichever is longer The warranties set forth herein are in lieu of all other warranties expressed or implied by law No liability whatsoever shall be
31. ut full sequence change cylinder Check for foaming if water level lower or cylinder life shorter than expected Change cylinder clean drain valve Aia PROCEDURES AND TERMS USED IN DIAGNOSING PRINCIPLE OF OPERATION The conductivity of the water within the cylinder must be controlled in order for the humidifier to function properly The fill and drain rates must be maintained Filling too quickly can cause over amping and automatic shutdown or blown fuses Filling too slowly can cause insufficient steam output and foaming Water supply pressure should be between 25 and 110 psig Draining too slowly can cause over concentration and malfunction due to foaming These are just some examples of what can go wrong if the fill and drain rates are not maintained FILL RATE Fill rates of suspect units should be checked Fill rates should measure nominally at 1 to 1 1 2 of vertical rise in water level in the cylinder in one minute Clogged fill valve will cause lower fill rate The fill valve strainer is removable and can be cleaned DRAIN TIME Manual drain time of a half full cylinder takes approximately 25 seconds If time measurements are longer repeat with the external drain disconnected and draining into a pail to verify that the external drain is impeding flow If it still does not drain check for a clogged strainer or drain A clogged strainer or drain valve will cause shortened cylinder life Determi
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