Nortec NHRS 010-090 Installation And Operation Manual Download Page 32 | Manualshive

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29 | Installation

Optional Outdoor Temperature Setback Sensor

Figure 23: Outdoor Temperature Setback



Each digital controller is equipped with an integrated reset function that can reduce the
setpoint during cold weather operation. This will prevent condensation on windows and
building structures. The above graph illustrates how the setpoint reset feature operates.



This feature is enabled by removing the jumper from terminals 8 and 1 on 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 setpoint for a short duration.

Figure 24: Outdoor Temperature Setback wiring

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Summary of Contents for NHRS 010-090

Page 1: ...on Manual Includes installation operation maintenance and troubleshooting information for your NHRS Resistive Element Steam Humidifier 2530618 J 10 NOV 2014 Important Read and save these instructions This guide to be left with equipment ...

Page 2: ...e written 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 Lt...

Page 3: ...rical 22 External Controls 29 Optional Outdoor Temperature Setback Sensor 30 Remote Fault Option Wiring 31 Options and Accessories 33 Start Up 34 Installation Check 36 Start Up Procedure 38 Information Screens 45 How the Humidifier Works 47 Selecting an RH Setpoint 48 Maintenance and Servicing 52 Troubleshooting 53 General Troubleshooting 55 Wiring Diagrams 57 Start Up Checklists 60 Maintenance Ch...

Page 4: ...erformed 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 NHRS pr...

Page 5: ...rd FOB factory 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 specification label 2 Ensure that the dedicated external fuse disconnect is of sufficient size to handle the rated amps as indicated on the specification...

Page 6: ...3 Introduction Humidifier Components Figure 2 NHRS Humidifier Components ...

Page 7: ...on from remote disconnect to humidifier High Voltage Transformer Steps primary voltage down to 24 VAC for the controller and internal components such as the fill valve and drain pump On Off Switch Turns power On Off to humidifier controller Note Turn off humidifier disconnect to shut off primary power to the humidifier Remote Relay Board option Provides a terminal strip to dry contacts which open ...

Page 8: ...nd installation of double units is identical to units with a single tank with the following exceptions In addition to having two tanks double units also have two Driver Boards One Driver Board controls each tank Double units can operate both tanks in series or parallel from a single control signal Parallel Operation If configured for parallel operation only one set of control wiring is required Th...

Page 9: ...utdoor standard Maintains water temperature in boiling tank at 160ºF 70ºC for quick response of the unit to a call for humidity while minimizing health concerns associated with standing water See P N 1504561 Nortec Online LINKS2 Provides monitoring and control allowing humidifier to communicate with a Building Management System BMS Controller is factory installed and located internally to the humi...

Page 10: ... 20 30 13 6 220 240 2530553 42 5 60 10 20 30 13 6 440 480 2530554 21 3 30 10 20 30 13 6 550 600 2530555 17 0 20 10 20 3 30 13 6 208 2530556 31 9 40 11 48 30 13 6 220 240 2530557 27 6 35 11 48 30 13 6 440 480 2530558 13 8 20 11 48 30 13 6 550 600 2530559 11 1 15 11 48 45 20 4 208 2530560 42 5 60 15 30 45 20 4 220 240 2530561 36 9 50 15 30 45 20 4 440 480 2530562 18 4 25 15 30 45 20 4 550 600 253056...

Page 11: ...1 Electrical 22 External Controls 22 Control Wiring 22 Duct Humidification 23 Space Humidification 24 On Off Control Wiring 26 Modulating Control Wiring 28 Transducer Control Wiring 29 Optional Outdoor Temperature Setback Sensor 30 Remote Fault Option Wiring 31 Options and Accessories 32 Keep Warm Outdoor Standard 32 Nortec Online LINKS2 32 Remote Relay Board 32 Scale Management System 32 Solid St...

Page 12: ...9 Installation Typical Humidifier Installation Figure 4 Typical Humidifier Installation Mounting Page 10 Steam Distribution Page 14 Controls Page 21 Electrical Page 20 Plumbing Page 13 ...

Page 13: ...ient temperatures between 41 and 104ºF 5 and 40ºC and relative humidity between 5 and 95 non condensing When possible install the humidifier below the steam distributor If mounted above the steam distributor take care to provide proper steam line routing and proper condensate traps DO NOT locate the humidifier any further than absolutely necessary from the steam distributor location as net output ...

Page 14: ...45 4 Not recommended Not recommended Not recommended Not recommended Table 5 Clearances for Blower Packs on High Speed Humidifier Capacity lb hr kg hr Min Frontal Clearance Inches cm Min Overhead Clearance Inches cm Min Left Side Clearance Inches cm Min Right Side Clearance Inches cm Up to 30 13 6 132 336 12 31 12 31 12 31 30 100 13 6 45 4 Not recommended Not recommended Not recommended Not recomm...

Page 15: ...n standard stud spacing dictates Insert screws into the studs until there is 0 6 cm of screw exposed Ensure the screws are level to each other 4 Raise the unit and place the screws through the keyholes Make sure the unit is level before tightening the screws to secure the unit in place 5 Place L shaped brackets on top of the unit ensuring the holes are in line with the studs Using the appropriate ...

Page 16: ... soft water de ionized reverse osmosis or potable 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 adequately sized to provide free and easy draining Ensure air gap is installed as shown A ...

Page 17: ... close as possible to the humidifier Short steam distribution lines minimize condensate losses and the possibility of generating back pressure in the steam distribution line Figure 8 provides common guidelines for locating a steam distributor in a duct Figure 8 Distributor Location in Duct Note Install the NHRS as close as possible to whatever steam distributor is used Refer to distributor SAM e o...

Page 18: ... 1 5 180 180 50 tank 15 NOTES 1 This chart gives the maximum length of recommended steam line by unit size 2 The use of steam line other than copper stainless steel or Nortec steam hose will void the warranty and may cause adverse effects regarding the operation of the humidifier 3 Nortec steam line shall only be used for steam line runs of 10 ft 3m or less 4 Long steam runs affect accuracy of hum...

Page 19: ... 625 OD 0 30 10 30 3 Copper Tube 2 0 MED L Tubing 2 125 OD RO or DI 0 30 0 10 0 3 Stainless Steel Tube 1 75 Tube x 0 065 thick 0 30 10 30 3 Stainless Steel Tube 2 0 Tube x 0 065 thick Potable 45 90 0 20 0 6 Copper Tube 1 5 MED L Tubing 1 625 OD 45 90 20 6 Copper Tube 2 0 MED L Tubing 2 125 OD RO or DI 45 90 0 20 0 6 Stainless Steel Tube 1 75 Tube x 0 065 thick 45 90 20 6 Stainless Steel Tube 2 0 T...

Page 20: ...ll low points and recommended intervals using full size T for traps Condensate should not be routed to a sink used frequently by personnel Route to a floor drain or equivalent Condensate normally cools in traps but is still hot A SAM e 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 ...

Page 21: ...cm before first bend in steam line 2 Slope the steam lines Steam Line Rules The following 10 points provide rules for installing steam lines connecting the NH humidifier to ASD BSD CSD SAMe and remote blower packs In addition to these rules never use unapproved material for steam lines ...

Page 22: ...team hose maintain minimum 12 30 cm bend radius 5 Install traps on condensate lines at least 12 30 cm below connection 6 Only combine steam lines at steam distributor with Nortec adapter 7 Install condensate traps at low points and horizontal to vertical transitions ...

Page 23: ...slope or install condensate trap 9 Install condensate traps if steam line 15 feet 4 5 m 10 In addition never After installation always Purge steam lines to remove any contaminants and installation materials Ensure all condensate lines traps flow freely ...

Page 24: ...21 Installation Electrical Figure 12 Primary Power Connection Caution Wiring to be performed by a licensed Electrician To humidifier high voltage terminal strip ...

Page 25: ...ate at least 10 feet 3 0 m from steam distributor or far enough that steam is fully absorbed under normal conditions 3 Humidity Control NHRS can be modulating On Off or a humidity sensor Can be located either in return air duct preferred or in room being humidified Mount in area representative of room humidity draft doorways sunlight or overhang such as shelf can affect reading Avoid placing near ...

Page 26: ...nt on indoor wall in area representative of room humidity draft doorways sunlight or overhang such as 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 outdoor air temperature Note Regardless of selecting on off or modulating control meth...

Page 27: ...Installation 24 On Off Control Wiring Figure 15 On Off Controls Figure 16 Digital On Off Humidistat ...

Page 28: ...25 Installation Figure 17 Duct Sensor Wiring ...

Page 29: ...Installation 26 Modulating Control Wiring Figure 18 Modulating Controls Figure 19 Digital Modulating Humidistats ...

Page 30: ...27 Installation Figure 20 Digital Wall Humidistat Remote Wall Sensor ...

Page 31: ...Installation 28 Transducer Control Wiring Figure 21 Transducers Figure 22 Digital Transducers ...

Page 32: ...erates This feature is enabled by removing the jumper from terminals 8 and 1 on 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...

Page 33: ...llowing 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 humidifier display and the yellow service LED i...

Page 34: ...ration are piped in the field and are wired to the humidifier RMBP power source or a separate power source if the installation requires For detailed installation information refer to the Blower Pack installation and operation manual document 2572641 Refer to Table 4 and Table 5 on Page 11 for clearance information Note For installation of options and accessories follow the instructions that are pr...

Page 35: ...service and unit power The kit can be factory or field installed and can interface with a BMS See Page 30 for wiring and installation Part number 1508069 Scale Management System The Scale Management System provides a separate reservoir underneath the steam tank for scale collection The addition of this option reduces maintenance time significantly Minerals removed from the water during steam produ...

Page 36: ...S User Interface 35 Auxiliary Drain Switch 35 Door Interlock Switch 36 Start Up Procedure 36 Initial Start Up Procedure 38 Information Screens 45 How the Humidifier Works 45 Start Up 45 Automated Operation 46 System Drains 47 Selecting an RH Setpoint ...

Page 37: ...k Before turning on power to the NHRS inspect the installation to ensure that it was carried out correctly Refer to figure below the NHRS Pre Start Up Checklist and the preceding chapter on installation Figure 27 Installation Check ...

Page 38: ...ff position If the unit has multiple tanks the switch will have both Tank A and Tank B settings This allows single tank draining Door Interlock Switch The door interlock switch cuts power to the contactor when the door is removed It is an additional safety device intended to prevent the possibility of service technicians coming into contact with live electrical wiring while working on the humidifi...

Page 39: ...system test is successful the steam tank fills up and a float test is carried out function check on the level unit The display below appears If a fault is detected during the float test a corresponding fault message is triggered When both tests are successful the NHRS will enter normal operating mode The display below appears and the green LED lights Initial Start Up Procedure The following proced...

Page 40: ...le 8 NHRS Operational Status LEDs LED Action Meaning Green Constant Unit Producing Steam Yellow Flashing Major or Minor Service Due Red Flashing The Unit is trying to self correct a problem Red Constant Insoluble Problem NOTE Relevant data will be displayed on the NHRS LCD display during normal operation and when in fault 3 If the humidifier is equipped with the optional Remote Fault Indication th...

Page 41: ... of steam production are displayed in percentage of total output 2 Nominal value unit capacity x input signal value 3 Actual value max unit capacity x input signal value x capacity limitation If the internal controller is activated only the actual value is shown Under the following conditions the actual value may differ from the nominal value upon activation of the heating power if capacity limita...

Page 42: ...2 on the control board Table 10 Maintenance intervals with rotary switch S2 S2 Position Interval Minor Maintenance Interval Major Maintenance 0 200 hours 600 hours 1 300 600 2 300 900 3 450 900 4 400 1200 5 600 1200 6 500 1500 7 750 1500 8 3000 3000 9 6000 6000 NOTE S2 rotary switch is set at factory to 0 0 200 hours 600 hours 1 300 hours 600 hours 2 300 hours 900 hours 3 450 hours 900 hours 4 400...

Page 43: ...als at 100 Steam Capacity 0 0 min 1 720 2 360 3 180 4 120 5 60 6 30 7 20 8 10 9 5 NOTE S1 rotary switch is set at factory to 9 Figure 31 Drain Cycle adjustment S1 NOTE Water quality conditions resulting in component failures are not covered under Nortec s standard warranty The factory settings are based on the following water conditions when the unit leaves the factory Should you have water condit...

Page 44: ...f NOTE If stand by heating is active the water temperature in the steam tank is constantly kept at approximately 158ºF 70ºC by the control board h Capacity Limitation 1 To change the Power Limit Maximum Capacity complete the following Press both arrow keys simultaneously Enter code 8808 Change to desired value and Press both arrow keys simultaneously i Inlet Valve Correction 1 Set inlet valve corr...

Page 45: ...ory default l Serial Interface 1 Serial Interface activated on consult factory Deactivated off factory default m Full Drain Cycle 1 Full Drain Cycle activated on consult factory Deactivated off factory default n Flush Cycle 1 Flush Cycle activated on consult factory Deactivated off factory default ...

Page 46: ...e of the analog signal may be adjusted using the rotary switch S3 on the control board Table 13 Control signal settings with rotary switch S3 S3 Position Signal 0 No signal selected 1 Spare 2 0 5 VDC 3 0 10 VDC 4 Other 5 1 5 VDC 6 2 10 VDC 7 Other 8 4 20 mA 9 0 20 A Figure 32 Control signal setting S3 ...

Page 47: ...Start Up 44 p Software Version 1 Displays software version for the steam humidifier q Unit Type ...

Page 48: ...s control inputs that are specific to the system configurations Once the configured control inputs are satisfied and water levels are within operational requirements level 1 4 steam production can commence 2 Steam production sequence will vary depending upon hardware configuration Units with the optional SSR relay kit should progress to step 2 2 Units with standard contactors progress to step 2 1 ...

Page 49: ...aged for the length of the flush timer to the flush timer 3 With very low demand this method can lead to exceedingly long intervals between system flushes In order to prevent the drain interval from becoming excessively long a function is used to limit maximum wait time before initiating the drain procedure This roughly equates to preventing the drain interval from exceeding 10 x the Flush Timer s...

Page 50: ...event 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 outdoor temperature sensor installed will automatically setback the humidity setpoint to correspond with outdoor temperature Duct H...

Page 51: ...Maintenance and Servicing 48 Maintenance and Servicing 49 Minor Maintenance 51 Major Maintenance ...

Page 52: ...e unit is off then remove the high voltage wires that connect to the top of the steam tank The heating elements will not be affected if they are connected to different power lines when re installed When re connecting heating elements ensure a tight engagement with a click of the connectors g Using a slotted screwdriver loosen the gear clamps that hold the steam line in place h Remove the steam lin...

Page 53: ...order p Turn power and water supplied back on to the unit q Turn on the unit and carry out the steps of the visual inspection once more No maintenance re set is required for Minor Maintenance Interval CAUTION Be extremely careful when handling the steam cylinder If it is dropped and damaged it will likely not seal properly and the entire cylinder will need to be replaced Figure 33 Minor maintenanc...

Page 54: ...nce Indication Major Maintenance Only 1 Restore primary voltage to the unit 2 With the unit in the off position press and hold the drain activation switch 3 Continue to hold the drain activation switch and turn the main power switch to the on position 4 Allow the unit to undergo initial startup diagnostics When the diagnostics are complete release the drain activation switch The unit maintenance s...

Page 55: ...rams 57 Start Up Checklists 57 NHRS Electric Steam Humidifier Mandatory Pre Start Up Checklist p1 of 3 58 NHRS Electric Steam Humidifier Mandatory Pre Start Up Checklist p2 of 3 59 NHRS Electric Steam Humidifier Mandatory Pre Start Up Checklist p3 of 3 60 Maintenance Checklists ...

Page 56: ...nection to over temperature switch on steam cylinder is broken or over temperature switch faulty Check connections or replace over temperature switch Steam cylinder overheating over temperature switch has responded Inspect steam cylinder clean if necessary Replace over temperature switch Flat band cable between control and power board interrupted or not connected Inspect connections connect or rep...

Page 57: ...locked Clean water outlet line and siphon Hose to level unit blocked Clean or replace hose Invalid level Error code 6A 6B Alarm6A Levelindicat Error6B levelindicat Level unit faulty Replace level unit Magnetic field in vicinity of level unit Eliminate magnetic field Steam pressure error only Error code 7A 7B Alarm7A communication Steam hose blocked or restricted water trap Inspect steam hose clean...

Page 58: ...55 Troubleshooting Wiring Diagrams Figure 34 Wiring Diagram NHRS 010 to 090 ...

Page 59: ...Troubleshooting 56 Figure 35 Wiring Diagram NHRS 135 to 180 ...

Page 60: ...IFIER MOUNTING Clearances around the unit Acceptable Obstruction Front door opens freely 3ft min __________________ Top steam lines 1ft min ____________________ Bottom fill drain controls 1ft min ____________________ Right main pwr 3ft min ____________________ Left main pwr 2 min ____________________ Ensure the scale tank bracket is locked in place STEAM LINES CONDENSATE LINES Slope up 2 per 12 Sl...

Page 61: ...res around the unit or on the PC board Yes no CONTROLS Installed Location Wiring Setting High limit _________________ Air proving _________________ Mod controller _________________ Other _________________ POWER Voltage amperage rating and fuse corresponds to Spec Label Disconnect switch located close to humidifier Field contact ___________________________ Signature _______________________________ ...

Page 62: ...e pulled out to operate unit NOTE The unit will undergo a System Test to ensure integrity of all the components If the test is successful the unit will fill and the float test will be carried out If everything ok the green light will come on and the display will show NHRS Ready OPERATIONAL CHECK 1 Switch on the humidification by raising the humidity set point on the humidistat controller 2 Switch ...

Page 63: ... for possible leakage or damage Inspect electrical installation for loose or frayed cables as well as damaged components Inspect the condition of the unit cabinetry for damage Survey the area surrounding the humidifier make sure all clearances are met Remove scale tank and empty Remove boiling tank clean inside as well as heating elements Reset maintenance indication Seasonal maintenance at the co...

Page 64: ...First locate the part you require in the illustration corresponding to your NHRS 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 65: ...Spare Parts 62 NHRS Plumbing Parts Figure 36 Exploded view NHRS plumbing parts ...

Page 66: ...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 2 2 2 2 14 1109384 Tank Clamp 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 1 1 1 1 1 2 2 2 2 2578492 SP Heating Element 11 25 lbs hr 208V Assembly 1 2 3 6 2578493 SP Heating Element 11 25 lbs hr 240V Assembly 1 2 3 6 2578494 SP Heating Element 11 25 lbs hr 480V Assembly 1 2 3 6 12 2578495 SP Heating Element 11 25 lbs hr 600V Assembly 1 2 3 6 1...

Page 67: ...Spare Parts 64 NHRS Electrical Parts Figure 37 Exploded view NHRS electrical parts ...

Page 68: ... 24VAC 150VA Primary 208 1 1 1 1 1 1 1 2574167 Transformer 24VAC 150VA Primary 240 1 1 1 1 1 1 1 2574168 Transformer 24VAC 150VA Primary 480 1 1 1 1 1 1 1 1 2 2 2574169 Transformer 24VAC 150VA Primary 600 1 1 1 1 1 1 1 1 2 2 7 2522489 On Off rocker switch 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 1 1 1 1 1 1 1 1 1 8 1323091 Interlocking door switch 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1...

Page 69: ... 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 70: ...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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