Nortec Industries Steam Injection Humidifiers User's Manual
Contents
1. 7 1 Supply high limit sensor 8 Outdoor temperature 9 Reset sensor a 10 Vdc Source courts 4 7 Mega Ohms Resistor Jumper NOTE For options 8 supply high limit sensor and 9 outdoor temperature reset sensor please see wiring diagram that comes with the controller 13 Figure 16 Typical SAM e Installation for Pressurized Steam Applications Duct AHU Width 7 Steam from top of main Manual Shut Off Duct AHU Su Steam RE Valve By Others Height St Mai Without Separator W y _ AY N 2 to 15 PSI Max RH uS ww P From Steam Main Strainer Actuator amp Valve Separator To SAM F amp T Steam Trap 6 Typ 4 1 Air Gap Drain AHU Floor Manual Shut Off we Return to non pressurized Valve By Others condensate return main Pressurized condensate bottom of the funnel return main Note Not using a Separator will allow lower Pressurized condensate OR quality steam to enter the SAM e Depending on return main the quality of the steam source this may cause excessive condensate and reduce SAM e Condensate capacity from SAM e Note When pressurized steam enters the SAM e the pressure drops down to almost atmospheric pressure Therefore it must be drained atmospherically and the use of a condensate pump rated for 212 degree F must be used to elevate the condensate to a higher point Condensate return main Ads Figur2. Follow all general instructions provided HUMIDIFIER with valve and actuator Make a plan of distributors layout if not already done See Figure 8 Multiple distributor humidifiers require field assembly The following steps should be taken into consideration All single distributor humidifiers will be assembled at the factory if the interconnecting piping option is selected at time of order 1 Match the separator valve assembly with the correct distributor assembly Nortec will tag 1 Match the separator valve assembly with the both assemblies correct distributors Nortec will tag both assemblies 2 The o ring in the tube adaptor should be lubricated use silicone based lubricant 2 To ensure the same output from each dispersion tube connect steam supply from 3 Slide the distributor into the tube adapter Make sure that the o ring is not damaged Tighten tube adapter The adapter should be Figure 8 Fi gure 7 Manual Shut Off Strainer Ventilation Duct Valve 7 d Distributor Strainer Header I Ventilation duct Piping Actuator Separator inlet Piping Steam Valve Seperator Steam Trap T Interconnecting Piping U NOTES 1 All shaded areas by NORTEC 2 Dimension X is 6 for LS1 and LS2 distributors 9 for LS3 distributors 3 Distributors LS1 12 and LS2 12 are supplied without support bracket 4 Interconnecting piping must be ordered at time of purch
3. Right Face Assembly standard Up Flow Distance SYSTEM 1 AIR HANDLING UNIT Figure 2 Heating Cooling Co Supply Air Notes HL High Limit Humidistat AP Air Proving Switch Advantages Location Disadvantages MOST recommended Assuming there is sufficient a duct High velocity may distances Warm air from ae coil steam may corrode coils Good absorption will help evaporate steam Possible capacity drop due to eventual condensation on the coil If on distance is too long it may wet the fan LOC 3 Warm air Good absorption LOC 4 Heating coils will help evaporate steam Absorption may be a problem No drain pan on coil Air is mixed well 5 Not Recommended Filters may sat saturated LOC 6 Not Recommended Outside air may cause condensation problems Problematic RH control create long absorption Any unabsorbed SYSTEM 2 IN DUCT NEAR AN ELBOW Figure 3 Note If not calculated dimension X is minimum 6 before or after bend or transition See up flow effect p 1 for calculation Location Advantages pisadvantsges E al Most Recommended More air on the outside Uneven air flow in the LOC 1 of the turn duct Possibility of wetting of the turning vanes Even air flow over the _
4. Whole duct WARNING This type of distributor may produce a whistling noise as the pressurized steam decompresses within the distributor and is introduced into the airstream This noise may be increased with higher pressure applications For noise dampening recommendations please consult the factory SYSTEM 3 MULTI ZONE SYSTEM SYSTEM 4 DUAL DUCT Figure 4 Figure 5 gt Outside Air Cooling Coil E This system usually requires two steam Location Advantages a distributors The primary load LOC 1 will go x Loc 1 aste absorption Possible loss of upstream of the fan The humidistat is located after distance to dampers capacity to condensate the fan and before the hot and cold decks The on cooling coils secondary load LOC 2 will go downstream to the mixing boxes and will be controlled by a humidistat in LOC 2 Heating coil will help Minimum distance to the space Please consult your Nortec agent if EN Ho an cong absorption distance is a problem High limit humidistat 1 Ena x is recommended in the mixed air duct Warm air Minimum distance to the dampers could SYSTEM 5 PRIMARY AND SECONDARY A result in wetting DISTRIBUTORS If one zone requires most of the air quantity Figure 6 supplied to the system this zone should be the location for the humidifier Humidity will eventually equalize when the system has been in operation
5. carton 2 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 3 Inspect shipping boxes for damage and note on shipping waybill accordingly 4 After unpacking inspect equipment for damage and if damage is found notify the shipper promptly 5 All Nortec products are shipped on an F O B factory basis Any and all damage breakage or loss claims are to be made to the shipping company LOCATION OF THE HUMIDIFIER IN AN AIR CONDITIONING SYSTEM Reference the following systems for humidifier location UP FLOW AFFECT The up flow affect is a result of the air velocity versus the steam velocity leaving the orifices of the distributor The air velocity is a product of the volume flow rate through a present cross sectional area The steam velocity leaving the orifices is directly proportional on the internal pressure inside the distribution tube This pressure is reduced when two or more distributors are in use The following up flow guidelines has been established from testing Inlet Steam Velocity B ressure 15 2 ft 15 1 ft 30 4 ft These up flow distances are only guidelines Every application presents a multitude of variables which may shorten or lengthen the up flow distance The location of the distributor may need to be changed if condensation occures Figure 1 TopView
6. for a while PRINARY 35 RH SECONDARY 70F 45 RH On occasion you may need a secondary load to reach a higher RH level in one part of your operation i e Hospitals In this case the primary load will maintain the normal space condition 70 F at 35 RH and the secondary load will satisfy the higher RH level 70 F at 45 RH needed for that zone High limit humidistats are recommended for each duct STEAM AND CONDENSATE PIPING hand tightened plus Y turn 25 in lbs 5 in lbs 1 Steam supply must be taken from the top of the main supply to the humidifier Do not take 4 The union halves come together and are from the sides or the bottom See Figure 8 tightened to make a snug fit The humidifier is ready to be installed in the 2 For removal of condensate from the steam duct See Figure 6 Single tube trap the condensate line should not be under comes factory assembled multi tube pressure Nortec recommends a check valve must be field assembled be installed after the steam trap if the f condensate return line is pressurized 5 It is also possible to install distributor in the duct and then attach the 3 Prpoer design and sizing of steam supply lines separator valve assembly should be performed by a qualified firm 6 Follow the steps listed in Installation Of LIVESTEAM Humidifier section to ASSEMBLY OF SINGLE DISTRIBUTOR complete installation HUMIDIFIER ASSEMBLY OF MULTIPLE DISTRIBUTOR Note
7. It is designed to be used with maximum bolt size of 3 8 M10 LS1 and LS2 distributors that are 12 Figure 11 Distributor Duct Support Bracket 30 5 cm long are not supplied with duct support brackets Figure 12 Threaded Rod 3 8 Figure 13 Nut 3 8 Threaded Rod Bracket Figure 14 Threaded Rod Nut Distributor PRESSURIZED SAM e 5 Set Screw 6 Actuator PLUMBING STEP 2 Steam Line 1 Thread jam nut on to valve stem all the Warning Proper design and sizing of stem lines way should be performed by a qualified technician 2 Place lock washer over valve stem so that Condensate Return Line it seats against jam nut 3 Thread st
8. LIVESTEAM HUMIDIFIER Note Follow all general instructions provided with valve and actuator To complete installation follow the steps listed below 1 Steam outlets of distributor should face into the air stream unless distributor is insulated Nortec s standard is right face 10 11 12 13 14 Distributors must be mounted level There is a support bracket at the end of the distributor to secure to the duct wall See Figure 11 to 14 for installation tips The steam distributor in a Single Distributor Humidifier should be centered in the duct The steam distributor should be mounted in a straight section of duct Please consult your Nortec agent if absorption distance is a problem For calculation of absorption distance please refer to NORTEC manual Form 163D Do not locate the steam distributor within 10 feet of high efficiency filters otherwise the filter will become saturated Cut a hole in the side of the duct large enough to insert the steam distributor Duct plates are provided to seal any opening Install actuator During installation follow instructions shipped with actuator For ease of maintenance provide shut off a valve before humidifier between strainer and steam main It can also be used to minimize heat gains during the non humidification period Install strainer before entering system and steam trap Connect to steam and condensate return mains Wire electric or install cont
9. Nor tec Steam Injection www humidity com Humidifiers Installation Maintenance and Troubleshooting Guide IMPORTANT Read and save these instructions This guide to be left with equipment owner Form 06 221 1506160 Table of Contents INSTALLATION RECEIVING 8 UNPACKING EQUIPMENT LOCATION OF THE HUMIDIFIER IN AN AIR CONDITIONING SYSTEM SYSTEM 1 AIR HANDLING UNIT SYSTEM 2 IN DUCT NEAR AN ELBOW SYSTEM MULTI ZONE SYSTEM SYSTEM4 DUAL DUCT SYSTEM 5 PRIMARY AND SECONDARY DISTRIBUTORS STEAM AND CONDENSATE PIPING ASSEMBLY OF SINGLE DISTRIBUTOR HUMIDIFIER ASSEMBLY OF MULTIPLE DISTRIBUTOR HUMIDIFIERS INSTALLATION OF LIVESTEAM HUMIDIFIER CHANGING ORIENTATION OF SINGLE DISTRIBUTOR HUMIDIFIER INSULATED STEAM DISTRIBUTORS DUCT SUPPORT BRACKET PRESSURIZED SAM e PLUMBING INSTALLING ACTUATOR TO STEAM VALVE l TYPICAL SAM e INSTALLATION FOR PRESSURIZED STEAM APPLICATIONS TYPICAL SAM e INSTALLATION FOR ATMOSPHERIC STEAM APPLICATIONS LIVESTEAM ACTUATOR WIRING DIAGRAM MAINTENANCE ELEMENTS OF LIVESTEAM HUMIDIFIER MAINTENANCE SCHEDULE TROUBLESHOOTING GUIDE NINN O O O Oi bh A HBP WWwWANN a N I o om IQ INSTALLATION RECEIVING amp UNPACKING EQUIPMENT 1 Check packing slip to ensure ALL material has been delivered Each humidifier may be shipped in more than one
10. ase for factory assembly NOTES 1 All shaded areas by NORTEC 2 Dimension X is 6 for LS1 and LS2 distributors 9 for LS3 distributors 3 Distributors LS1 12 and LS2 12 are supplied without support bracket 4 Interconnecting piping must be ordered at time of purchase for factory assembly separator close to the middle of distributor header 3 Steam jacket piping has to be secured to the distributor header to avoid possible separation Use gear clamp or similar device 4 Distributors have to be equally spaced in the duct Distance to the top and bottom of the duct should be one half of E but not less than 6 for LS1 and LS2 distributors and not less than 9 for LS3 distributors 5 Use additional steam trap if total length of distributors of Type LS1 exceeds 40 Type LS2 exceeds 30 and Type LS3 exceeds 20 See Figure 9 Figure 9 Strainer Ventilation duct Distributor Header Steam Jacket Piping Separator Inlet Piping Steam Trap 3 4 NPT y Steam Jacket Piping o NPT Steam Traps Steam Traps NOTES 1 All shaded areas by AxAir NORTEC if specified at time of order 2 Dimension X is 6 for LS1 and LS2 distributors 9 for LS3 distributors 3 Steam jacket piping has to be secured to distributor to avoid possible separation 6 Follow the steps listed in Installation Of LIVESTEAM Humidifier section to complete installation INSTALLATION OF
11. at steam is not leaking from the stem packing and the valve closes tightly Repack if necessary Valve Seat Lap seat if necessary Pneumatic Actuator Should be inspected annually to confirm that the diaphragm is not leaking air and the valve operates properly Electric Actuator Should be inspected annually to confirm that the valve operates properly Steam Trap Should be inspected annually Clean and inspect seats and replace required gaskets if necessary 16 Temperature Switch Should be inspected once a year to ensure proper operation Test by supplying steam which should open at 200 F MAINTENANCE SCHEDULE DESCRIPTION DATE PERSONNEL 17 TROUBLESHOOTING GUIDE PROBLEM Distributor Discharges Water Humidifier Leaks Water From Tube Adapter Over Humidifying Under Humidifying Humidity Swings Spitting During Start Up i i Condensate In Duct 8 Open doors window loading shipping docks 5 Pressure reducing valve is not working properly if installed UA A E Condensate return line not draining 1 Back pressure on condensate line 2 Dirty steam trap repair or replace 3 Steam trap is wrong type Steam supply 1 Steam pressure is too low under 2 psi 2 Steam main flooding d
12. e 17 Typical SAM e Installation for Atmospheric Steam Applications Duct AHU Width Atmospheric steam inlet Use Nortec supplied steam hose and gear clamps 1 Air Gap To Prevent Back Siphonage Drain static pressure NOTE Steam hose piping should not reach bottom of the funnel Drain Water Cooler Option 1 2 NPT Cold water inlet wm 2 NPT Tempered Water Drain ET 1 NPT to 3 4 NPT 6 min Reducer Or 4 Air Gap To Prevent T Su lied B Others i 2 higher than duct Back Siphonage nn sale pressure a To drain 3 4 NPT Manual dump valve 15 K t n 2 higher than duct Duct AHU Height M ene q AHU Floor MAINTENANCE ELEMENTS OF LIVESTEAM HUMIDIFIER Tube Adapter consists of 3 pieces See Figure 18 To maintain proper seal hand tighten tube adapter nut plus turn Additional o ring is shipped with this manual If o ring has to be replaced do so as follows 1 Disconnect actuator 2 Dismount union by the separator 3 Replace o ring in the tube adapter 4 Lubricate o ring with silicone based lubricant Figure 18 Tube Adapter Strainer Should be cleaned shortly after the system has begun operating 3 to 7 days and then annually Separator No maintenance required Distributor No maintenance required Valve Should be inspected annually to confirm th
13. em extension on valve stem When pressurized steam 2 50 psi enters the SAM e compressing the lock washer a large pressure drop brings it down to almost atmo spheric pressure Therefore condensate can not be lifted after the F T trap A high temperature conden Step 2 sate pump may be used to achieve this Condensate from the SAM e must always be returned to an atmospheric condensate return main Long condensate runs more than 20 ft should be oversized for better flow Refer to page 13 Figure 15 for proper trap installa tion INSTALLING ACTUATOR TO STEAM VALVE STEP 3 MS51 7203 DURA DRIVE ACTUATOR NORTEC 150 7552 0 10VDC 150 7553 1 Insert hex wrench as illustrated 4 20mA 150 7554 On Off 2 Rotate wrench 1 turns ASSEMBLY INSTRUCTIONS For 2 Bronze ll Valve for incoming pressures from 32 to 50 3 Lock actuator by tightening locking psi mechanism with a slotted screwdriver STEP 1 Step 3 Ensure all components are accounted for 1 Jam Nut 2 Lock Washer 3 Stem Extension 4 Connecting Pin Step 1 Mechanism STEP 4 1 Thread actuator on to valve 2 Tighten valve mounting nut 3 Manually raise valve stem to up position 4 Ensure proper response to control signal open Step 4 MS51 7103 DURA DRIVE ACTUATOR NORTEC PN 150 7549 0 10VDC 150 7550 4 20mA 1507551 On Off ASSEMBLY INSTRUCTIONS For Bronze 2 and St St 3 4 Valves for incomi
14. ex wrench as illustrated 2 Rotate 1 turns counter clockwise 3 Lock Actuator by turning locking mechanism clockwise with a slotted screwdriver Step 7 STEP 10 1 Tighten Valve Mounting Nut compressing Lock Washer Step 410 Locking Mechanism STEP 8 1 Insert valve with extension into actuator 2 Loosely thread Valve Mounting Nut and Lock Washer on to Spacer as illustrated 2 Tighten Stainless Steel Jam Nut on actuator against the Spacer STEP 11 1 Release actuator by loosening locking mechanism 2 Refer to wiring diagram for wiring instructions 3 Apply power to actuator and ensure proper operation of valve and actuator 4 Ensure proper response to control signal 245 Figure 15 o LiveSteam Actuator Wiring Diagram Modulation By NORTEC LiveSteam Technology Controller P N 132 9131 132 9132 132 9133 Actuator P N 150 7549 150 7552 150 7556 WARNING Failure to wire the humidistat Cabling betwen humidistat in accordance with the wiring diagram controller and actuator or remote could permanently damage the humidistat sensor should be sheilded 18 AWG and or actuator Such errors will void Warranty CONTROLLER TO ACTUATOR CONNECTIONS Controller terminal strip 0 10 Vdc output 4 ellow black red 24 Vac 5 black Common 6 For representation purposes only Main humidity sensor
15. ng pressures from 2 to 50 psi for all valves except for 2 which would be 2 to 31 psi STEP 1 Ensure all components are accounted for 1 Jam Nut 2 Connecting pin 3 Stem Extension 4 Actuator STEP 5 1 Align stem extension hole with actuator plunger hole Step 1 2 Insert connecting pin 3 Tighten jam nut against valve stem 4 Insert set screw into actuator on most accessible side 5 Tighten 20 25 in lbs Step 5 STEP 2 1 Thread jam nut on to valve stem all the way 2 Thread stem extension on valve stem Step 2 STEP 6 1 Release actuator by loosening locking mechanism 2 Refer to wiring diagram for wiring instructions 3 Apply power to actuator and ensure proper operation of valve and actuator 4 Release Actuator by turning hex key 1 8 STEP 3 turn counter clockwise 1 Insert hex wrench as illustrated Step 5 2 Rotate wrench 2 turns counter clockwise 3 Lock actuator by pressing wrench towards actuator and rotating 1 8 turn clockwise Step 3 STEP 6 1 Refer to wiring diagram for wiring instructions 2 Apply power to actuator and ensure proper operation of valve and actuator STEP 4 3 Ensure proper response to control signal 1 Thread actuator on to valve 2 Tighten valve mounting nut 3 Manually raise valve stem to up position open Step 4 STEP 5 1 Align s
16. rol tubing pneumatic to the valve actuator Industry standards recommend the use of drain pans under the steam distributor Nortec recommends the use of a temperature switch Valve will not open until the distributor has reached it s operating temperature This is optional and must be ordered Nortec recommends the use of an air proving switch to prevent wetting in the duct Humidifier will not operate if there is no air movement in the duct A high limit duct humidistat which prevents saturation and wetting in the duct is recommended down stream 12 14 feet from the humidifier and set at 80 to 90 RH CHANGING ORIENTATION OF SINGLE DISTRIBUTOR HUMIDIFIER Unless specified otherwise in the order right face assembly of single distributor will be shipped See Figure 10 Steam outlets should face the air stream Should you need to correct the steam flow direction open the union and disengage the nipple elbow assembly from the steam distributor Turn the tube assembly 180 Reinstall the nipple elbow assembly Figure 10 Right Face Left Face Assembly Assembly standard optional INSULATED STEAM DISTRIBUTORS When the steam distributor is insulated the distributor should discharge in the direction of air flow This is to prevent condensation build up on the steel insulation jacket DUCT SUPPORT BRACKET Duct support bracket allows for easy installation in the various duct configurations Figure 11 12 13 14
17. t THE COMPANY s manufactured and assembled products not otherwise expressly warranted 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 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 of NORTEC 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 b
18. tem extension hole with actuator shaft hole 2 Insert connecting pin 3 Tighten jam nut against valve stem MS61 7203 DURA DRIVE ACTUATOR 3 Spacer NORTEC PN 150 7556 0 10VDC 150 7557 4 Copper Ring not used 4 20mA 150 7558 On Off 5 Lock Washer Step 3 ASSEMBLY INSTRUCTIONS For 1 2 St St Valves for incoming pressures from 2 to 50 psi STEP 1 Ensure all components are accounted for 1 Actuator 2 Hex Wrench 3 Stem Extension Kit 4 Linkage Assembly Step 1 STEP 4 1 Thread the two stem extensions together with the lock washer as shown in the illustration Step 4 SIEP2 Linkage Kit Includes Connecting Pin Small Lock Washer Nut not used Large Lock Washer Stem Extension Sticker oa koON gt STEP 5 Step 2 1 Thread the spacer on to the valve 2 Tighten the spacer as far down as possible Step 5 STEP 3 Stem Extension Kit Includes 1 Valve Mounting Nut 2 Stem Extender 10 STEP 6 3 Adjust Stem Extension by rotating to align holes on valve stem extension and actuator 1 Thread Extension Assembly from Step 4 on to valve stem Step 8 2 Hand tighten as far down as possible 3 Manually position the valve in the fully open position Step 6 STEP 9 1 Insert Connecting Pin through hole in Stem Extension and actuator plunger STEP 7 Step 9 Pre loading Actuator 1 Insert H
19. ue to boiler discharging water with steam 3 Steam supply not taken at top of main 2 Defective o ring in tube adapter replace o ring 3 Is the o ring lubricated 1 Valve stem adjusted too tight and sticking 2 Valve spring broken 3 Foreign matter is preventing the valve from closing 4 Valve is installed incorrectly 5 Steam pressure exceeds rating of valve spring 6 Controller out of calibration 1 Boiler pressure is inadequate 2 Steam piping is either undersized or piped incorrectly 3 Strainer is plugged 4 Valve is not fully opened Check for leaking air in actuator 5 Humidifier is undersized 6 Controller is out of calibration 7 Excess amounts of outside air 1 Controller is malfunctioning 2 Poor location of humidity sensor 3 Humidifier is oversized 4 Boiler pressure swings too widely 1 Add temperature switch 2 Are drip legs installed 3 Was the piping supplied undersized 4 Is the boiler carrying too much condensate 5 Is the boiler undersized of does it have the incorrect pressure 1 Mounting too close to devices elbows dampers etc in duct 2 Duct surface temperature is too low 3 Oversized humidifier 18 LIMITED WARRANTY AXAIR NORTEC INCORPORATED and or AXAIR NORTEC LIMITED here in after collectively referred to as THE COMPANY warrant for a period of two years from date of shipment tha
20. y 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 Ax Ir Nortec a WMH Company Q lt lt www humidity com O z U S A AxAir NORTEC Inc 826 Proctor Avenue Ogdensburg New York 13669 m CANADA AxAir NORTEC Ltd 2740 Fenton Road Ottawa ON K1T 3T7 z 1 866 NORTEC 1 Fax 613 822 7964 c ay a WMH Company uw
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