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Nortec NHTC, NHPC manual 10-10, Page 21

Models: NHPC NHTC

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(b)Formula 7

Assume that during the summer the HVAC system is in the cooling mode. The air leaving the cooling coil is at 55°F and 90% rh. In order to maintain the desired 47% rh in the space, moisture must be added using the following formula:

Desired space 80°F 47% rh= 5.19 gr/ft3 (Formula 1)

	55°F 90% = 4.89 x 0.90	3
	55°F 90% = 4.89 x 0.90	= 4.40 gr/ft
	Grains to add	= 0.79 gr/ft3
	15,000 x 0.79 x 60 min/hr	= 101.57 lbs/hr
	7,000 grains/lb	= 101.57 lbs/hr
	7,000 grains/lb

(8)In considering Process and Environment, in Tables 5 through 7 you will find conditions and processes that may affect your calculation and should be addressed.

(a)Table 5 shows the outdoor temperature at which the rh would cause condensation on the windows to the outside. Should your outdoor conditions make this a possibility, an outdoor setback sensor may be a solution.

(b)Table 6 describes the moisture gain of various material and if your process or environment includes a great amount of these materials that are constantly introduced to the area, its affects must be considered.

(c)Table 7 identifies many recommended indoor conditions for various locations and processes, these can be of use when deciding what conditions would be most beneficial in your application.

(d)In Figure 2, you will find the ASHRAE physchrometric chart describing the enthalpy of dry air and the effects to and from rh in the air.

Table 5. Inside Relative Humidities At Which Moisture Will Condense On Windows

Outside			Inside Temperature (°F/°C)							Outside			Inside Temperature (°F/°C)
Temperature			Inside Temperature (°F/°C)							Temperature			Inside Temperature (°F/°C)
Temperature										Temperature

°F	°C	60/		65/	70/	75/		80/		°F	°C	60/		65/	70/	75/		80/
°F	°C	15.5		18.3	21	23.8		26.6		°F	°C	15.5		18.3	21	23.8		26.6
		15.5		18.3	21	23.8		26.6				15.5		18.3	21	23.8		26.6
Single Windows, Still Air										Single Windows, Wind

-50	-45	9		9	9	8		8		-50	-45	4		3	3	3		2

-40	-40	12		12	11	10		10		-40	-40	5		4	4	4		3

-30	-34	16		14	14	13		13		-30	-34	7		6	6	6		5

-20	-29	20		18	18	17		16		-20	-29	10		9	9	8		7

-10	-23	25		23	22	21		20		-10	-23	14		13	12	11		10

0	-18	32		29	27	25		24		0	-18	20		18	16	15		13

10	-12	39		36	33	31		29		10	-12	28		24	22	20		18

20	-7	47		43	40	37		35		20	-7	36		32	30	26		24

30	-1	57		52	50	45		42		30	-1	48		41	38	34		30

40	4	70		63	60	53		50		40	4	62		54	49	43		40

NOTE: Bold areas indicate that moisture will be in the form of frost on windows.

10-10

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Nortec NHTC, NHPC manual 10-10, Page 21

Contents

NHTC / NHPC ELECTRODE STEAM HUMIDIFIER NH SeriesTMEngineering Manual 2538144-BPROPRIETARY NOTICE SPECIFICATION LABEL LOCATIONLIABILITY NOTICE COPYRIGHT NOTICE10-00ELECTRODE STEAM ENGINEERING TABLE OF CONTENTS10-10HUMIDITY, STEAM ABSORPTION AND DISTRIBUTION SubjectWARRANTY 10-20SPECIFICATIONS10-30SUBMITTALS Subject10-00ELECTRODE STEAM ENGINEERING LIST OF FIGURES10-10HUMIDITY, STEAM ABSORPTION AND DISTRIBUTION FigureFigure 10-30SUBMITTALSFigure 2008-10-0110-00ELECTRODE STEAM ENGINEERING LIST OF TABLES10-10HUMIDITY, STEAM ABSORPTION AND DISTRIBUTION 10-30SUBMITTALS2008-10-01 Table 13. Modulating Demand Signal By Others Single Channel. . . . . . . . . . . . . . . . . . .Page 10-00 INTRODUCTION10-00 Page 2 10-00Figure 1. NHTC Page 3 1. INTRODUCTION10-00 Page 4 10-00Figure 2. Optimum Boiling Time 10-00Figure 3. Conductivity Page 510-00 B.NH CAPACITY ADJUSTMENTC.DRAIN CYCLE AND CYLINDER LIFE 1Water Type Used Potable or Softened1.Fill to A trigger use all places below 10-00Figure 6. Output vs Service Life Figure 5. Capacity Setting & Cylinder Life10-00 Page 8A.GENERAL 3.PRE-INSTALLATIONEQUIPMENT VERIFICATION10-00 Page 10 Figure 6. Typical NHRS Installation Sheet 1 of10-00 Page 11 Figure 7. Typical NHRS Installation Sheet 2 of10-00 Page 12 10-10 HUMIDITY STEAM ABSORPTION AND DISTRIBUTION10-10 1. HUMIDITY HUMIDITY, STEAM ABSORPTION AND DISTRIBUTIONC.TEMPERATURE AND HUMIDITY REQUIRED D.TEMPERATURE AND HUMIDITY AVAILABLE10-10 Outdoor temperatureTable 2. Load Calculation Summary Sheet Page 14Page 15 E.INCOMING AIR VOLUME10-10 Table 4. Design Outdoor Conditions 10-10Page 16 JANUARYTable 4. Design Outdoor Conditions cont 10-10Page 17 JANUARYTable 4. Design Outdoor Conditions cont 10-10Page 18 JANUARYPage 19 10-10Page 20 10-10Page 21 10-10Page 22 10-10Table 6. Regain of Hygroscopic Materials Page 23 10-10Page 24 10-10Page 25 10-1010-10 TemperaturePage 26 Product and/or ProcessPage 27 Figure 2. Psychrometric Chart10-10 10-10 2.STEAM ABSORPTION AND DISTRIBUTIONA.VARIABLES THAT AFFECT ABSORPTION DISTANCES Page 28Page 10-10Figure 3. Steam Distributor Location B.CALCULATING THE DOWN STREAM HUMIDITY LEVEL 10-102The following are two examples: Example Page 30C.CONTROL OF DUCT OR PLENUM SATURATION 10-10Figure 4. Condensate Drain Pan Page 3110-10 3.STEAM RUNS AND CONDENSATE RETURNSA.STEAM RUNS Figure 5. Proper SlopePage 33 10-10Table 11. Steam Line Material B.CONDENSATE RETURN 10-10Page Unit SizeFigure 8. Condensate Tee At Any Low Point 10-10In Steam Line Figure 7. Steam Line ConnectionPage 36 10-10B.DISTRIBUTOR CHARACTERISTICS 4.STEAM DISTRIBUTORS ASD, BSD, CSD10-10 A.STEAM DISTRIBUTORSC.DISTRIBUTOR LOCATIONS AND MOUNTING 10-10D.MULTIPLE DISTRIBUTOR APPLICATIONS Page 38Figure 12. Cutting Duct For Mounting 10-10Figure 13. Humidification Distance Nomogram Page 39F.DISTRIBUTOR ABSORPTION DISTANCE 10-10Figure 14. Best Location for Multiple Steam Distributors in AHU10-10 H.DISTRIBUTOR DIMENSIONSG.TYPICAL APPLICATIONS Figure 15. Roof Top Units 2-20Tons –10-10 5.SHORT ABSORPTION MANIFOLD SAM-eA.GENERAL Figure 17. SAM-eTubesPage 43 10-10B. DETERMINING THE STEAM ABSORPTION DISTANCE NOTES 10-10C.STATIC AIR PRESSURE Table 15. Air Pressure Loss in AHU/DuctFigure 19. Absorption Distance – 3 Centers 10-10Figure 20. Absorption Distance – 6 Centers Figure 21. Absorption Distance – 9 Centers10-10 F.SAM-eDIMENSIONSTable Condensate LossFigure 23. SAM-eHeader 10-10Figure 24. SAM-eTubes Figure 25. Steam Inlet10-10 I.SAM-eSTEAM INLET CONFIGURATION SELECTION1Atmospheric Steam NH, GS, SE J.MINI SAM-eTable 18. Mini SAM-eHeaders – 10-10Table 19. Mini SAM-eHeaders – Table 20. Mini SAM-eTubesPage 50 10-1010-10 6. BLOWER PACKS BOBP, RMBPABOVE THE FLOOR A.BLOWER PACKS Figure 27. NH Series Humidifier WithPage 52 10-10NH Series Model Minimum Number Of10-10 7.CONTROLSA.GENERAL THIS FUNCTION B.ON/OFF CONTROLSFigure 29. Set Point Versus Outdoor Temperature D.OUTDOOR TEMPERATURE SETBACK10-10 E.TRANSDUCER SENSORSF.POSITIONING CONTROLS AND SENSORS 10-10G.NORTEC ONLINE Page 55Page 56 10-10Figure 30. NORTEC OnLine Monitoring Page 57 10-10H. NORTEC LINKS J.NORTEC CONTROLLER DIMENSIONS I.TYPICAL INSTALLATION LAYOUT FOR NHTC/NHPC1See dimensions in Chapter 10-10Figure 31. NORTEC Online Configuration Form NORTEC ONLINE CONFIGURATION FORM10-10 G FOR YOUR INFORMATION10-10 NORTEC LINKS FORMPlease complete the information below Figure 32. NORTEC Links FormModulating Wall Mounted Space Controller 10-10Modulating Wall Mounted Space Controller Page 61Page 62 10-10Page 63 10-20 SPECIFICATIONS10-20 1.HUMIDIFIERS SPECIFICATIONS4Warranty 10-20Page 65 10-20Page 10-202Humidifier Controls NHTC and NHTC Outdoor Page 67 10-20Page 68 10-20Page 69 10-204Humidifier Dispersion Options Page 70 10-20C. EXECUTION 1Examination 4Testing 2Installation10-20 3CommissioningPage 72 10-20Page 73 10-30 SUBMITTALS10-30 10-30 1. SUBMITTAL DESCRIPTIONSA.INTRODUCTION B.NH UNIT2Built-OnBlower Pack NHTC and NHPC only 10-30F. CONTROLS Page 75Page 76 10-30Page 77 10-30Figure 1. Low Voltage Control Terminal Strip Page Figure 2. Primary Line Voltage Wiring to Unit10-30 Page 79 10-30Figure 3. Physical Data – NHTC/NHPC Page 80 10-30Figure 4. Physical Data – NHTC/NHPC Page 81 10-30Figure 5. Physical Data – NHTC/NHPC Unit Model 10-3010-30 Dimensions – in mmDistributor Minimum Duct10-30 Dimensions – in mmDistributor ModelDuct Width 10-30Duct Height D Tube HeightDuct Width 10-30Page 87 10-30Page 88 10-30Page 89 10-30Page 90 10-3010-30 Figure 14. Vertical Duct InstallationFigure 15. Outside Duct Mounting Cover Plates Page 91Page 92 Figure 16. Atmospheric SAM-eAdapter Dimensions10-30 Page 93 10-30Page 94 10-30Page 95 10-30Page 96 10-3010-30 Wall Digital Humidistat Dimensions10-30 Duct Sensor Dimensions2.SUBMITTALS 10-30B.INSTALLATION COMPONENT SELECTION A.INTRODUCTION10-30 Table 2. Common Accessories UniversalTable 3. Steam Distributors Page 10010-30 Table 4. Steam Distributor AccessoriesTable 3. Steam Distributors cont Page 101Other Accessories Table 4. Steam Distributor Accessories cont10-30 Page 102Page 103 10-30Table 5. SAM-eHeader Page 104 10-30Table 5. SAM-eHeader cont Page 105 10-30Table 5. SAM-eHeader cont 10-30 Table 6. Adjustable Mounting Frame for SAM-eTable 5. SAM-eHeader cont Table 7. SAM-eTube MatrixPage 107 10-30Table 7. SAM-eTube Matrix cont Page 108 10-30Table 7. SAM-eTube Matrix cont Page 109 10-30Table 7. SAM-eTube Matrix cont 10-30 Table 8. SAM-eInlet and Adapter ConfigurationsTable 7. SAM-eTube Matrix cont Page 110Table 9. Remote Blower Pack 10-30Table 10. Built-OnBlower Pack Page 111Table 11. Controls – ON/OFF 10-30Table 12. Modulating Control By NORTEC Page 112Page 113 10-3010-30 Table 18. NH Series Fusing OptionsTable 16. NORTEC OnLine Options NHTC only Table 17. NORTEC Links Options NHTC onlyC. SCHEDULE Humidifier Information 10-30Control Information Distributor InformationWARRANTY 826 Proctor Avenue Cylinder Replacement Date MM/DD/YYYY2740 Fenton Road Ogdensburg, NY