NH
TM
Series
NHTC / NHPC
ELECTRODE
STEAM HUMIDIFIER
Engineering Manual
2538144-B
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TABLE OF CONTENTS
Subject
Page
10-00 ELECTRODE STEAM ENGINEERING
1.
INTRODUCTION WHY ELECTRODE STEAM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
PROPORTIONAL + INTEGRAL AUTO-ADAPTIVE CONTROL SYSTEM FOR
THE NHTC/NHPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
NH CAPACITY ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
DRAIN CYCLE AND CYLINDER LIFE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
PRE-INSTALLATION EQUIPMENT VERIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
A.
B.
C.
2.
A.
10-10 HUMIDITY, STEAM ABSORPTION AND DISTRIBUTION
1.
HUMIDITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
ESTIMATING THE HUMIDIFICATION LOAD . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
LOAD CALCULATION SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TEMPERATURE AND HUMIDITY REQUIRED . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
TEMPERATURE AND HUMIDITY AVAILABLE . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
INCOMING AIR VOLUME . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
STEAM ABSORPTION AND DISTRIBUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
VARIABLES THAT AFFECT ABSORPTION DISTANCES. . . . . . . . . . . . . . . . . . . . 28
CALCULATING THE DOWN STREAM HUMIDITY LEVEL . . . . . . . . . . . . . . . . . . . 30
CONTROL OF DUCT OR PLENUM SATURATION . . . . . . . . . . . . . . . . . . . . . . . . . 31
STEAM RUNS AND CONDESNATE RETURNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
STEAM RUNS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
CONDENSATE RETURN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
STEAM DISTRIBUTORS (ASD, BSD, CSD) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
STEAM DISTRIBUTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
DISTRIBUTOR CHARACTERISTICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
DISTRIBUTOR LOCATIONS AND MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
MULTIPLE DISTRIBUTOR APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
LOCATION OF STEAM DISTRIBUTORS WITHIN AN AIR HANDLER . . . . . . . . . . 40
DISTRIBUTOR ABSORPTION DISTANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
TYPICAL APPLICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
DISTRIBUTOR DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
SHORT ABSORPTION MANIFOLD (SAM-e) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
DETERMINING THE STEAM ABSORPTION DISTANCE . . . . . . . . . . . . . . . . . . . . 43
STATIC AIR PRESSURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
CONDENSATE LOSSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
CORRECT CHOICE OF PRODUCT APPLICATIONS (WITHIN SAM-e) . . . . . . . . 46
SAM-e DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
SAM-e HEADER SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
SAM-e STEAM TUBE SELECTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
SAM-e STEAM INLET CONFIGURATION SELECTION . . . . . . . . . . . . . . . . . . . . . 48
MINI SAM-e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
BLOWER PACKS (BOBP, RMBP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
BLOWER PACKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
A.
B.
C.
D.
E.
2.
A.
B.
C.
3.
4.
A.
B.
A.
B.
C.
D.
E.
F.
G.
H.
5.
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
6.
A.
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Subject
7.
Page
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
ON/OFF CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
MODULATING CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
OUTDOOR TEMPERATURE SETBACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
TRANSDUCER SENSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
POSITIONING CONTROLS AND SENSORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
NORTEC ONLINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
NORTEC LINKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
TYPICAL INSTALLATION LAYOUT FOR NHTC/NHPC . . . . . . . . . . . . . . . . . . . . . 58
NORTEC CONTROLLER DIMENSIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
10-20 SPECIFICATIONS
1.
HUMIDIFIERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
A.
B.
C.
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
PRODUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
EXECUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
10-30 SUBMITTALS
1.
SUBMITTAL DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
A.
B.
C.
D.
E.
F.
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
NH UNIT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
DISTRIBUTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
SAM-e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
BLOWER PACK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
WARRANTY
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LIST OF FIGURES
Figure
Page
10-00 ELECTRODE STEAM ENGINEERING
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
NHTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Optimum Boiling Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Typical Auto-Adaptive Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Capacity Setting & Cylinder Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Output vs Service Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Typical NHRS Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
10-10 HUMIDITY, STEAM ABSORPTION AND DISTRIBUTION
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Schematic of a Typical Print Shop HVAC System . . . . . . . . . . . . . . . . . . . . . . 19
Psychrometric Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Steam Distributor Location . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Condensate Drain Pan . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Proper Slope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Drain Tee . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Steam Line Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Condensate Tee At Any Low Point In Steam Line . . . . . . . . . . . . . . . . . . . . . . . 35
Trap To Prevent Steam In Condensate Line . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Levelling the Distributor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Single Steam Distributor Installation – Minimum Clearance . . . . . . . . . . . . . . . 38
Cutting Duct For Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Humidification Distance Nomogram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Best Location for Multiple Steam Distributors . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Roof Top Units 2-20 Tons – Typical Location . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Small Units On Residential Furnaces . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
SAM-e Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Cross-Section of Distributor Pipe . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Absorption Distance – 3" Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Absorption Distance – 6" Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Absorption Distance – 9" Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Absorption Distance – 12" Centers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
SAM-e Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
SAM-e Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Steam Inlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Typical SAM-e Installation for Atmospheric Steam Applications . . . . . . . . . . . . 50
NH Series Humidifier With Built-On Blower Pack . . . . . . . . . . . . . . . . . . . . . . . . 51
NH Series Remote Mounted Blower Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51
Set Point Versus Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
NORTEC OnLine Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
NORTEC Online Configuration Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
NORTEC Links Form . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Figure 21.
Figure 22.
Figure 23.
Figure 24.
Figure 25.
Figure 26.
Figure 27.
Figure 28.
Figure 29.
Figure 30.
Figure 31.
Figure 32.
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Figure
Page
Figure 33.
Figure 34.
Figure 35.
Humidifier Controlled by Air Proving, On/Off Duct Mounted High Limit and
Modulating Wall Mounted Space Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
Humidifier Controlled by Air Proving, Modulating Duct Mounted High Limit
and Modulating Wall Mounted Space Controller . . . . . . . . . . . . . . . . . . . . . . . . 61
Humidifier Controlled by Air Proving, Modulating Duct Mounted High Limit
and Modulating Wall Mounted Return Air Sensor with Wall Mounted
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Humidifier Controlled by Air Proving, Duct Mounted High Limit Sensor
and Modulating Duct Mounted Return Air Sensor with Networking Option . . . . 62
Figure 36.
10-30 SUBMITTALS
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Figure 6.
Figure 7.
Figure 8.
Figure 9.
Figure 10.
Figure 11.
Figure 12.
Figure 13.
Figure 14.
Figure 15.
Figure 16.
Figure 17.
Figure 18.
Figure 19.
Figure 20.
Low Voltage Control Terminal Strip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
Primary (Line) Voltage Wiring to Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Physical Data - NHTC/NHPC 005-030 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
Physical Data - NHTC/NHPC 050-100 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80
Physical Data - NHTC/NHPC 150-200 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 81
Distributor Dimensions (3 Sheets) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
SAM-e General Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 85
General Mini SAM-e Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
In-Duct/AHU Installation Without Mounting Frame Installation . . . . . . . . . . . . . 87
In-Duct/AHU Installation With Mounting Frame Installation . . . . . . . . . . . . . . . . 88
Outside Duct Installation Without Mounting Frame Installation . . . . . . . . . . . . . 89
Outside Duct Installation With Mounting Frame Installation . . . . . . . . . . . . . . . . 90
Vertical Duct Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Outside Duct Mounting Cover Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91
Atmospheric SAM-e Adapter Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 92
Atmospheric Steam Header and Adapter Configuration . . . . . . . . . . . . . . . . . . 93
Physical Data for Remote Mounted Blower Pack . . . . . . . . . . . . . . . . . . . . . . . 94
Physical Data Units With Optional Built-On Blower Packs . . . . . . . . . . . . . . . . . 95
Wall Digital Humidistat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Duct Sensor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
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LIST OF TABLES
Table
Page
10-00 ELECTRODE STEAM ENGINEERING
Table 1.
Table 2.
Features Comparison . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
NHTC/NHPC Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
10-10 HUMIDITY, STEAM ABSORPTION AND DISTRIBUTION
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Table 19.
Table 20.
Table 21.
Table 22.
Outdoor/Indoor Relative Humidity Conversion Chart . . . . . . . . . . . . . . . . . . . . 14
Load Calculation Summary Sheet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Grains of Water Per Cubic Foot – Saturated Air (100% rh) . . . . . . . . . . . . . . . 15
Design Outdoor Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Inside Relative Humidities At Which Moisture Will Condense On Windows . . 21
Regain of Hygroscopic Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Design Indoor Conditions For Various Places, Products and Processes . . . . . . 23
Variables That Affect Absorption Distances . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Typical Absorption Distances, Single Distributor, 100 lbs/hr Humidifier . . . . . . . 29
Water (lbs/hr) Contained in 1000 CFM of Air . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Steam Line Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Recommended Material and Size for Steam Run . . . . . . . . . . . . . . . . . . . . . . . 33
Recommended Condensate Line at Distributor(s) . . . . . . . . . . . . . . . . . . . . . . . 33
Maximum Recommended Length of Steam Runs . . . . . . . . . . . . . . . . . . . . . . . 34
Air Pressure Loss in AHU/Duct . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Condensate Loss . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
SAM-e Tube Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 48
Mini SAM-e Headers – 3" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Mini SAM-e Headers – 6" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Mini SAM-e Tubes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Mini Inlet Configurations – For Atmospheric Steam Unit . . . . . . . . . . . . . . . . . . 49
Ceiling and Frontal Clearances for Blower Packs . . . . . . . . . . . . . . . . . . . . . . . 52
10-30 SUBMITTALS
Table 1.
Table 2.
Table 3.
Table 4.
Table 5.
Table 6.
Table 7.
Table 8.
Table 9.
Table 10.
Table 11.
Table 12.
NH Series Unit Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Common Accessories Universal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Steam Distributors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 100
Steam Distributor Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101
SAM-e Header . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
Adjustable Mounting Frame for SAM-e . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
SAM-e Tube Matrix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 106
SAM-e Inlet and Adapter Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
Remote Blower Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Built-On Blower Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111
Controls – ON/OFF . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Modulating Control By NORTEC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
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Table
Page
Table 13.
Table 14.
Table 15.
Table 16.
Table 17.
Table 18.
Modulating Demand Signal By Others Single Channel. . . . . . . . . . . . . . . . . . . 113
Modulating Demand Signal By Others Dual Channel . . . . . . . . . . . . . . . . . . . . 113
Modulating By Other Transducer Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
NORTEC OnLine Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
NORTEC Links Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
NH Series Fusing Options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 114
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10-00
INTRODUCTION
10-00
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Figure 1. NHTC
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1. INTRODUCTION
The NHTC humidifier is controlled by Nortec’s Patented Auto adaptive Water Management
Control System. This system allows the humidifiers to adapt to basically any potable
incoming water and changes that occur to the water supply. This eliminates the need to
readjust drain timers, changes complete cylinders or time consuming adjustment of
electrode spacing’s. The system also adjusts the drain rate of the humidifier to reduce the
amount of drain water exiting the humidifier as water conditions change. This reduces
energy loss due to excessive draining of hot water and extends cylinder life since less water
and minerals enter the humidifier.
The following is a brief description of how the Auto-Adaptive water Management System
works.
The electrode steam system produces pure uncontaminated steam with variable output
through electronic power control of the electrodes. Water borne minerals remain in the
cylinder and are periodically flushed out through the automatic cylinder drain. On NHTC and
NHPC models the drain automatically empties the steam cylinder if it is not operated for
three days. Solid mineral scale sinks to the bottom of the cylinder which, when filled with
residue, is easily removed and replaced.
A. PROPORTIONAL + INTEGRAL AUTO-ADAPTIVE CONTROL SYSTEM FOR THE
NHTC/ NHPC
(1) NORTEC’s patented P+I Auto-Adaptive control system allows the unit to operate at
an optimal low water level using the same fixed electrode spacing regardless of the
incoming water conditions. Boiling of the water allows the minerals in the water to
remain behind in the cylinder. This raises the contained water conductivity to a
value higher than the incoming water. The P+I Auto-Adaptive control system
monitors and adjusts the contained water conductivity as these changes occur.
(2) The humidifiers are designed to produce full steam output at the lowest possible
electrode coverage to obtain maximum cylinder life.
(3) The units operate between A and D of the main steam output demand.
Accordingly, the current flow between the electrodes in the cylinder is maintained
between these pre-established limits programmed into the P+I Auto-Adaptive
control system.
(4) As the water boils away and the electrode coverage is reduced, the steam output is
also reduced slightly. A pre-determined design parameter of every NORTEC
cylinder is the known time (To) (time optimum) that it takes to boil down from A to
D of output (also referenced to as amp trigger points) at a pre-designed contained
water conductivity. (See Figure 2.)
(5) Whenever the conductivity in the cylinder water is lower than the designed
conductivity, the (Ta) (time actual) to boil down from A to D will be longer than the
To. (See Figure 3.)
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(6) As the water is boiled away, the minerals left behind increase the conductivity of
the water in the cylinder. As soon as the conductivity is greater than design, the Ta
to boil from A to D will be shorter than To and a drain cycle is initiated.
(7) The fill valve always opens during timer drains, adding cold water to mix with the
hot water from the cylinder during automatic drain cycles. This tempering process
is required to meet plumbing codes.
(8) As can be seen from a typical sequence depicted in Figure 4, the P+I Auto-
Adaptive system allows the unit to be self-regulating. It drains only when necessary
and only the amount of water to maintain optimum operating conditions.
(9) Relying on the proportional (P) feedback only to decide how much to drain is like
guessing what is happening based on a ‘snapshot’ only. By taking into
consideration a series of “snapshots”: (one from each of the past ten cycles for
example), the control system has more data on which to base its decision to drain.
The integral (I) part of the P+I Auto-Adaptive system provides this added feedback.
(10) The proportional (P) and integral (I) factors have been weighted as to the relative
influence each will have when the NHTC/NHPC calculates a drain. The
preprogrammed weighing was derived through extensive field and laboratory tests.
When supply water conductivity is extremely high (requiring substantially more
drains), the NHTC/NHPC will see the pattern developing in cycles stored in
memory. It will then initiate additional drains to adjust the contained water
conductivity.
(11) If low conductive water conditions occur, the P+I control will reduce the drains
necessary to maintain optimum operating conditions within the cylinder. If extreme
water conditions are encountered, the NHTC/NHPC can be reprogrammed with
factory instructions to compensate.
(12) NORTEC’s P+I Auto-Adaptive control system has been designed to benefit users
who demand very tight control of the relative humidity. It maintains steam output
above the B level, even during auto drains. (See Figure 4.)
(13) The P+I Auto-Adaptive control system allows the humidifier to maintain tighter
humidity control without the problem of rh depression during drain cycles that occur
with other humidifiers. This results in more consistent space rh levels, even with a
simple on/off control system.
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Figure 2. Optimum Boiling Time
Figure 3. Conductivity
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B. NH CAPACITY ADJUSTMENT
(1) Each NORTEC NH Series humidifier is rated at its maximum output capacity. By
means of the alphanumeric display and keypad on the NHTC/NHPC, the
humidifiers can be adjusted to obtain an output between 20% and 100% of its rated
capacity.
C. DRAIN CYCLE AND CYLINDER LIFE
(1) Water Type Used (Potable or Softened)
(a) The electrode steam product line is one of the most efficient humidifier
systems since it uses the minerals in the water to conduct electricity. If no
minerals are present no current can pass from one electrode to another, thus
no steam production can occur.
(b) Although the electrode steam humidifier is ideal for potable water, it should
not be used with pure reverse osmosis or deionized water since the
conductivity is too low.
(2) Water Conditions vs Cylinder Life
(a) The NH Series is designed to adapt to most potable or softened water
supplies. Since the output of all NH Series humidifiers is pure, clean steam,
minerals originally in the incoming water are left behind in the steam cylinder.
Many of these minerals will be removed during short flush cycles within the
cylinder. Therefore, the water chemistry, the unit running time, and output
capacity setting ultimately determines the cylinder life. (See Figure .)
(3) Output vs Cylinder Life
(a) As minerals build-up on the electrodes in the cylinder of the NORTEC NH
Series humidifier, the patented P+I Auto-Adaptive control system
automatically raises the water level slightly in the cylinder. This exposes fresh
electrode surface to the water and maintains peak output and efficiency from
the humidifier. Once the
(b) electrode surface is completely encrusted by the minerals, the user is alerted
to change the cylinder. Other humidifiers’ performance degrades gradually as
the minerals build-up. The NH Series maintains maximum efficiency then the
cylinder is replaced. (See Figure .)
(4) Water Conditions vs Drain Rate
(a) The P+I Auto-Adaptive control system automatically adjusts the drain rate to
maintain the design water conductivity required for proper operation. This
ensures regular flushing of minerals which become concentrated in the water,
and minimizing wastage of hot water. The humidifier automatically adjusts it’s
drain rate with changes in incoming water conductivity through the Auto-
adaptive water management system.
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0. Store previous cycle’s drain decision in integral (l) memory.
1. Fill to A trigger (use all places below 1-10).
2. Boil to C trigger without timing to allow previous fill water to mix thoroughly during boiling.
3. Boil from C to D while monitoring time (T actual).
4. Decide how long (how much) to drain, then fill to B.
5. Drain according to the P+I calculated drain time, fill on to control outlet temperature.
6. At D, stop draining and postpone remaining drain, fill to B.
7. Continue remaining drain.
8. With drain finished, fill to A.
9. Boil to D, timing from C to D.
10. Decide how long to drain (in this case zero) based on present and past cycles.
Figure 4. Typical Auto-Adaptive Operation
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It is important to note that the drain rate shown includes the make-up water,
mixed with the drain water, which tempers the drain water to 140°F (60°C) or
less.
NOTE
The electrode steam process provides optimum efficiency because all resistance to
current passage is converted to usable energy. Unlike cal-rod or infrared humidifiers
which convert some of their capacities into unusable heat.
Figure 5. Capacity Setting & Cylinder Life
Figure 6. Output vs Service Life
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3. PRE-INSTALLATION EQUIPMENT VERIFICATION
A. GENERAL
(1) Ensure the available voltage and phase correspond with humidifier voltage and
phase as indicated on the humidifier’s specification label.
(2) Ensure that the external fuse disconnect is sufficient size to handle the rated
amperage as indicated on the humidifier’s specifications label. Refer to local building
codes.
(3) Report any discrepancy immediately to the site engineer.
(4) Location and mounting is described in Chapter 10-10.
(5) For typical installation see Figures 6 & 7.
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Figure 6. Typical NHRS Installation (Sheet 1 of 2)
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Figure 7. Typical NHRS Installation (Sheet 2 of 2)
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10-10
HUMIDITY,
STEAM ABSORPTION
AND
DISTRIBUTION
10-10
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HUMIDITY, STEAM ABSORPTION AND DISTRIBUTION
1. HUMIDITY
A. ESTIMATING THE HUMIDIFICATION LOAD
Note: The humidification load can easily be calculated by using Nortec’s Humidification Engineering
and Load-sizing Program (HELP). The softward can be downloaded at www.humidity.com
(1) Relative humidity is the percentage of moisture in the volume of air at a given
temperature, compared to the maximum amount of moisture that the volume of air can
hold at the same temperature and atmospheric pressure. As air becomes warmer, it
can absorb more moisture per unit volume. Therefore a quantity of air containing a
specific amount of moisture will have different values of relative humidity as the
temperature changes.
(2) It is this process that causes dry air in building. As cold incoming air is heated, its
relative humidity value drops. Therefore moisture must be added to attain an
acceptable level of humidity within the building. Determining how much moisture must
be added is the object of this brochure. Table 2 simplifies the calculations which are
described here in detail.
B. LOAD CALCULATION SUMMARY
(1) In order to determine the humidification load three basic values need to be known:
(a) The design conditions of the humidified space, i.e., the temperature and humidity
required.
(b) The conditions of the incoming air, i.e., the temperature and humidity available.
(c) Incoming air volume and secondary conditions that can affect the humidification
load.
(2) Data and calculations required to estimate humidification load are described in
Tables 1, 2 and 3.
C. TEMPERATURE AND HUMIDITY REQUIRED
(1) The design temperature and humidity of a space depends mostly upon the job being
performed. Once the design temperature and humidity have been established, the
required moisture can be found in gr/ft3 from Table 3. Remember always to take the
worst case (highest temperature, highest humidity).
(2) Formula 1
For example:
The press room of a printing plant should be kept at 76 - 80°F with 43% - 47% rh
Therefore, the worst case is 80°F, 47% rh.
From Table 3 the required moisture is 11.04 gr/ft3 x 47% = 5.19 gr/ft3
D. TEMPERATURE AND HUMIDITY AVAILABLE
(1) The outdoor conditions tell us the moisture available in the incoming air. Approximate
values can be obtained from Table 4 and combined with Table 3 to find moisture
available. Once again we must take the worst case (here, it is lowest temperature,
lowest humidity). As can be seen, the contribution of moisture from the outside air is
almost zero.
10-10
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Table 1. Outdoor/Indoor Relative Humidity Conversion Chart
100%
95%
90%
85%
80%
75%
70%
65%
60%
55%
50%
45%
40%
35%
30%
25%
20%
15%
10%
5%
2
2
4
3
5
4
4
4
4
4
3
3
3
3
2
2
2
2
2
1
1
1
0
0
0
-5°
6
6
5
5
5
4
4
4
3
3
3
3
2
2
2
1
1
1
1
0
0
0°
7
7
9
9
8
8
7
7
6
5
5
4
4
4
4
4
3
3
2
1
1
0
0
12
12
11
11
10
10
9
17
16
15
14
13
12
11
10
9
19
17
16
15
15
14
13
12
11
10
9
23
22
21
20
19
18
17
15
14
13
12
11
10
9
29
28
26
24
23
22
20
19
17
16
14
13
12
10
9
36
34
31
29
27
26
24
23
21
19
18
16
14
12
11
9
43
41
39
37
35
33
31
29
26
24
22
20
18
15
13
11
9
52
50
48
45
42
39
36
34
31
29
26
24
21
18
15
13
10
8
2
3
6
2
3
6
2
3
6
2
3
5
1
2
5
1
2
4
8
1
2
4
7
1
1
4
7
8
1
1
3
6
8
1
1
3
6
7
8
1
1
3
5
7
7
1
1
2
5
6
6
0
1
2
4
5
6
7
0
1
2
3
4
5
5
7
0
1
2
3
3
4
5
5
7
0
0
1
2
3
3
4
4
5
6
0
0
1
2
2
2
3
3
3
4
6
0
0
0
1
1
1
2
2
2
3
3
0%
0
0
0
0
0
0
0
0
0
0
0
-20°
-10°
+5°
+10° +15° +20° +25° +30° +35° +40° +45° +50°
Outdoor temperature
Chart shows what the residual indoor RH would be at 70°F under varying outdoor conditions if a proper humidification
system were not installed in the building. Studies indicate that the recommended RH should be between 40% and 60%
for optimum benefits to the occupants.
Table 2. Load Calculation Summary Sheet
Determine the moisture required in the space (Table 3)
3
Grains from Table 3 at space temp. ______ x Indoor RH
= A ______ gr/ft
= B ______ gr/ft
Determine the moisture level of incoming air (Table 4)
Grains from Table 4 at space temp. ______ x Outdoor RH
3
3
3
Therefore: moisture to be added: (moisture) M - A - B ______ gr/ft
→M ______ gr/ft
Determine the volume of air to be humidified. Choose the largest
value.
3
1. Natural ventilation: Volume x number of air changes.
2. Exhaust air: CFM x 60 min/hr
______ ft /hr
3
______ ft /hr
3
3
3. Make-up air: CFM x 60 min/hr
______ ft /hr
→C ______ ft /hr
Therefore: Gross humidification load = L (load) = MxC = ______ lbs/hr
→L ______ lbs/hr
7,000
NOTES: 1. 7,000 grains = 1 pound
2. If HVAC system uses economizer cycle, check load using formula 6.
10-10
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Table 3. Grains of Water Per Cubic Foot – Saturated Air (100% rh)
°C °F Grains °C °F Grains °C °F Grains °C °F Grains °C °F Grains °C °F Grains
-23 -10
-5
.29
.35
4
40
41
42
43
44
45
46
47
48
49
2.86
2.97
58
59
5.41
5.60
5.80
6.00
76
77
78
79
9.75 35 95
17.28
17.80
114 29.34
115 30.13
10.06
10.40
10.80
11.04
96
97
98
99
-18
0
8
.48
3.08 16 60
18.31 49 120 34.38
18.85 125 39.13
19.39 54 130 44.41
135 50.30
101 20.52 60 140 56.81
102 21.11 145 64.04
103 21.71 66 150 72.00
104 22.32 155 80.77
.61
3.20
3.32
3.44
3.56
61
62
63
64
-12 10
-9 15
-7 20
-4 25
-1 30
31
.78
6.20 27 80
.99
7
6.41
6.62
6.85
7.07
81
82
83
84
11.40 38 100 19.95
1.24
1.56
1.95
2.04
11.75
12.11
12.49
12.87
3.69 18 65
3.83
3.97
4.11
4.26
66
67
68
69
7.31 29 85
32
2.13 10 50
7.57
7.80
8.10
8.32
86
87
88
89
13.27 41 105 22.95 71 160 90.43
33
2.21
2.29
2.38
2.47
51
52
53
54
13.67
14.08
14.51
14.94
106 23.60
107 24.26 77 170 112.60
108 24.93 175 125.40
109 25.62 82 180 139.20
185 154.30
111 27.07 88 190 170.70
165 101.00
34
4.41 21 70
2
35
36
37
38
39
4.56
4.72
4.89
5.06
71
72
73
74
8.59 32 90
2.56 13 55
8.87
9.15
9.45
91
92
93
94
15.39 43 110 26.34
2.66
2.76
56
57
15.84
16.31
16.79
5.23 24 75
112 27.81
113 28.57
195 188.60
(2) Formula 2
Assume our printing plant is located in Denver, Colorado. From Table 4, the worst
case is -10°F with 37% rh
From Table 3:
0.29 gr/ft3 x 37% rh - 0.11 gr/ft3
Combining this result with that of Moisture Required (A) we see that we will need
5.19 - 0.11 = 5.08 grains of moisture for every cubic foot of outside air brought in.
E. INCOMING AIR VOLUME
(1) The following outlines the steps necessary to determine the amount of outside air being
brought into the humidified space and the corresponding amount of moisture required.
There are three basic means by which outside air is introduced into the humidified
space. These are:
(a) Through natural ventilation, for example, opening and closing doors and windows,
and by infiltration through cracks and openings in the building construction.
(b) Through mechanical ventilation, for example, the introduction of make-up air, or
the exhausting of stale air by the building HVAC system.
(c) Through the economizer section of the HVAC system - if this feature is included in
the system.
(2) For maximum accuracy, all three should be estimated and the largest chosen.
10-10
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Table 4. Design Outdoor Conditions
JANUARY
Relative Humidity
(% RH)
JULY
Relative Humidity
(% RH)
Dry
Bulb
°F
Dry
7:30
A.M.
1:30
P.M.
7:30
P.M.
7:30
A.M.
1:30
P.M.
7:30
P.M.
State
Alabama
City
Birmingham
°C
-12
Bulb
°F
°C
35
10
81
61
66
95
84
56
68
Mobile
-12
10
--
--
--
95
90
64
78
35
Arizona
Flagstaff
Phoenix
Yuma
-23
-4
-1
-10
25
30
83
75
56
58
47
37
--
39
27
90
105
110
77
53
51
36
31
31
--
23
23
32
41
44
Arkansas
California
Little Rock
-15
5
80
67
68
95
85
55
59
35
Eureka
Fresno
Los Angeles
Sacramento
San Diego
San Francisco
-1
-4
2
-1
2
30
25
35
30
35
35
87
93
63
90
76
84
--
80
46
82
58
68
77
66
51
70
60
70
90
105
90
100
85
92
61
85
76
86
92
--
36
50
46
68
75
80
20
54
28
65
78
32
41
32
38
29
29
2
85
Colorado
Denver
Grand Junction
Pueblo
-23
-26
-29
-10
-15
-20
54
77
67
37
64
44
41
64
48
95
95
95
55
48
73
27
27
34
30
22
35
35
35
35
Connecticut
Delaware
New Haven
Wilmington
Washington
-18
-18
-18
0
0
0
75
77
73
65
62
56
69
70
64
95
95
95
77
80
78
64
52
52
74
69
64
35
35
35
District of
Columbia
Florida
Jacksonville
Miami
-4
2
25
35
89
87
56
59
75
75
95
91
85
83
57
64
76
76
35
33
Georgia
Atlanta
Augusta
Savannah
-12
-12
-7
10
10
20
80
84
83
64
59
58
69
69
72
95
98
95
83
83
85
57
55
61
68
69
80
35
37
35
Idaho
Boise
Lewiston
-23
-20
-10
-5
82
79
75
73
74
71
95
95
54
64
34
37
23
25
35
35
Illinois
Cairo
Chicago
Peoria
-18
-23
-23
0
-10
-10
81
81
83
69
70
72
--
75
77
98
95
96
83
78
81
57
51
53
--
55
58
37
35
35
Indiana
Fort Wayne
Indianapolis
Terre Haute
-23
-23
-18
-10
-10
0
84
83
82
75
72
70
81
78
76
95
95
95
84
84
77
53
54
50
58
60
56
35
35
35
Iowa
Davenport
Sioux City
-26
-29
-15
-20
--
78
--
67
--
72
95
95
--
86
--
55
--
54
35
35
Kansas
Dodge City
Topeka
-23
-23
-10
-10
78
78
57
64
61
67
95
100
77
85
45
54
52
54
35
38
Kentucky
Louisiana
Louisville
-18
0
78
68
69
95
77
52
57
35
New Orleans
Shreveport
-7
-7
20
20
85
83
67
67
73
66
95
100
84
86
64
56
72
62
35
38
Maine
Portland
-21
-18
-5
0
81
72
65
68
74
56
90
95
78
71
58
52
76
65
32
35
Maryland
Baltimore
Massachusetts
Michigan
Boston
-18
0
72
59
67
92
72
55
70
33
Detroit
Grand Rapids
-23
-23
-10
-10
82
85
71
78
77
80
95
95
74
76
50
51
56
54
35
35
Minnesota
Mississippi
Duluth
Minneapolis
-32
-29
-25
-20
78
82
74
72
74
75
93
95
87
82
61
54
66
54
33
35
Vicksburg
-12
10
82
65
67
95
87
61
70
35
Kansas City
St. Louis
-23
-18
-10
0
78
77
64
65
66
68
100
95
76
73
48
50
47
55
38
35
Missouri
Montana
Billings
Butte
-32
-29
-25
-20
67
76
73
70
60
71
90
95
65
82
40
36
33
33
32
35
Nebraska
North Platte
Omaha
-29
-23
-20
-10
80
82
62
68
66
73
85
95
84
80
50
51
46
51
29
35
Nevada
Reno
-21
-26
-5
82
78
67
60
54
69
95
90
72
80
25
49
20
69
35
32
New Hampshire
Concord
-15
10-10
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Table 4. Design Outdoor Conditions (cont)
JANUARY
Relative Humidity
(% RH)
JULY
Relative Humidity
(% RH)
Dry
Bulb
°F
Dry
Bulb
°F
7:30
A.M.
1:30
P.M.
7:30
P.M.
7:30
A.M.
1:30
P.M.
7:30
P.M.
State
City
Atlantic City
°C
-15
°C
35
New Jersey
5
79
68
74
95
81
72
82
Newark
Trenton
-18
-18
0
0
72
73
79
62
65
68
95
95
75
77
51
55
65
68
35
35
New Mexico
New York
Albuquerque
-18
0
68
51
46
95
59
33
28
35
Albany
Buffalo
New York
Rochester
-23
-21
-18
-21
-10
-5
0
75
79
72
81
63
72
61
73
71
78
66
79
93
93
95
95
79
78
75
80
52
53
58
50
64
63
68
60
34
34
35
35
-5
North Carolina
Asheville
Raleigh
-18
-12
0
10
82
82
59
57
69
69
93
95
88
86
56
55
73
72
34
35
North Dakota
Ohio
Bismarck
-34
-30
77
71
75
95
85
52
49
35
Cincinnati
Cleveland
Columbus
Toledo
-18
-18
-23
-23
0
0
-10
-10
82
81
83
79
70
72
71
72
74
79
76
75
95
95
95
95
84
79
78
76
52
52
52
52
60
58
60
59
35
35
35
35
Oklahoma
Oregon
Oklahoma City
-18
0
79
62
65
101
80
49
51
38
Baker
Portland
-21
12
-5
10
83
87
81
82
78
78
90
90
69
86
68
63
36
48
32
32
Pennsylvania
Harrisburg
Philadelphia
Pittsburgh
Scranton
-18
-18
-18
-21
0
0
0
72
74
77
80
49
65
67
67
65
68
63
--
95
95
95
95
78
78
80
77
51
52
52
50
62
64
63
--
35
35
35
35
-5
Rhode Island
Providence
-18
0
73
60
67
93
79
57
73
34
South Carolina
Charleston
Columbia
-9
-12
15
10
87
81
55
57
76
65
95
95
88
83
64
56
82
68
35
35
South Dakota
Tennessee
Texas
Huron
Rapid City
-29
-29
-20
-20
79
71
72
69
76
67
95
95
86
71
52
42
49
40
35
35
Knoxville
Memphis
-18
-18
0
0
83
82
65
67
69
73
95
95
83
85
55
55
66
59
35
35
Amarillo
Corpus Christi
Dallas
El Paso
Houston
-23
-7
-12
-12
-7
-10
20
10
10
20
20
71
88
81
63
85
82
51
66
62
45
66
60
52
75
62
39
73
59
100
95
100
100
95
77
93
79
60
90
88
43
58
50
37
58
49
42
68
47
30
66
45
38
35
38
38
35
38
San Antonio
-7
100
Utah
Salt Lake City
Burlington
-23
-23
-9
-10
-10
15
80
81
84
71
69
60
72
78
68
95
90
95
56
76
81
27
54
57
23
67
72
35
32
35
Vermont
Virginia
Washington
Richmond
Seattle
Walla Walla
-9
-21
15
-5
86
80
80
74
74
78
85
95
86
50
63
33
47
22
29
35
West Virginia
Wisconsin
Charleston
Parkersburg
-18
-23
0
-10
79
82
64
66
70
74
95
95
88
80
53
52
67
65
35
35
Green Bay
Milwaukee
-26
-26
-15
-15
75
76
68
70
73
73
95
95
85
81
58
58
64
64
35
35
Wyoming
Province
Alberta
Cheyenne
-26
-15
59
48
55
95
73
36
40
35
City
Calgary
-34
-34
-42
-36
-34
-29
-29
-43
-32
-30
71
87
86
84
91
96
34
31
30
29
33
36
Edmonton
Grande Prairie
Lethbridge
Medicine Hat
75
80
66
73
42
38
30
31
British Columbia
Estevan Point
Fort Nelson
Penticton
Prince George
Prince Rupert
Vancouver
-8
-40
-18
-38
-12
-9
17
-40
0
-37
11
84
79
81
82
87
87
87
94
85
73
80
80
32
32
44
53
54
41
31
34
29
23
27
27
15
10-10
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Table 4. Design Outdoor Conditions (cont)
JANUARY
Relative Humidity
(% RH)
JULY
Relative Humidity
(% RH)
Dry
Bulb
°F
Dry
Bulb
°F
7:30
A.M.
1:30
P.M.
7:30
P.M.
7:30
A.M.
1:30
P.M.
7:30
P.M.
Province
Manitoba
City
°C
-34
-40
-37
-34
°C
32
26
29
32
Brandon
Churchill
The Pas
-29
73
76
77
78
90
50
57
54
50
-40
-35
-29
79
85
90
Winnipeg
New Brunswick
Newfoundland
Campbellton
Fredericton
Moncton
-28
-27
-24
-24
-18
-16
-12
-12
77
72
82
82
87
89
88
81
54
47
52
62
31
32
31
27
Saint John
Corner Brook
Gander
Goose Bay
St. John’s
-23
-21
-32
-17
-10
-5
-26
1
84
76
85
84
85
86
79
47
45
42
60
29
29
30
26
N.W.T.
Frobisher
Resolute
Yellowknife
-43
-45
-45
-45
-49
-49
77
71
82
63
54
78
67
81
50
17
12
26
Nova Scotia
Ontario
Halifax
Sydney
Yarmouth
-18
-17
-15
0
1
5
83
84
83
83
84
76
50
56
70
28
29
24
Thunder Bay
Hamilton
Kaspuskasing
Kingston
Kitchener
London
North Bay
Ottawa
Peterborough
Sioux Lookout
Sudbury
Timmins
Toronto
-33
-18
-34
-24
-19
-18
-29
-27
-25
-36
-29
-36
-19
-16
-29
-27
0
-30
-11
-3
80
75
79
86
91
87
85
88
90
87
90
90
65
89
90
90
92
88
52
52
52
69
58
53
46
50
53
69
44
45
56
51
48
30
33
31
29
31
32
31
32
32
18
32
32
32
31
29
84
80
77
0
-20
-17
-13
-33
-20
-33
-3
77
78
81
79
82
Windsor
Sault St. Marie
-3
-20
P.E.I.
Charlottetown
-21
-6
86
84
57
29
Quebec
Knob Lake
Mont Joli
Montreal
Port Harrison
Quebec City
Sept-Iles
Sherbrooke
Trois Rivieres
-40
-24
-27
-39
-28
-33
-28
-28
-40
-11
-16
-39
-19
-27
-18
-18
79
75
55
62
88
70
71
58
13
17
31
76
81
86
80
87
88
60
47
58
58
30
27
31
31
Saskatchewan
Yukon Territory
Prince Albert
Regina
Saskatoon
Swift Current
-41
-37
-37
-34
-41
-34
-34
-29
77
81
76
79
88
92
90
93
31
33
32
34
Dawson
Whitehorse
-49
-43
-56
-45
76
80
57
78
60
40
14
26
10-10
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(3) Using the natural ventilation method requires knowing the volume of the humidified
space and the type of construction. A tightly constructed building will have a least one
air change per hour. A loosely constructed building will have at least one and one half
changes per hour, and this same building with a large a amount of incoming or exiting
traffic will have at least two air changes per hour.
(a) Formula 3
Assume our print shop has a floor area of 100' x 100' with a 20' ceiling with a
large amount of traffic. This requires
100' x 100' x 20' x 2 = 400,000 ft3/hr.
Using our example, the moisture required is
400,000 x 5.08
_______________ = 290 lbs/hr
7000 grains/lb
(4) Using make-up air:
(a) Formula 4
Assume our print shop has a 15,000 CFM HVAC system and uses 10%
make-up air during winter. The amount of outside make-up air entering the
HVAC system will, therefore, be 10% of 15,000 CFM = 1,500 CFM. The
moisture required will be
1,500 x 5.08 x 60 min/hr
_________________________ = 65 lbs/hr
7,000 grains/lb
(Refer to Figure 1.)
Figure 1. Schematic of a Typical Print Shop HVAC System
10-10
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(5) Using an exhaust air fan:
(a) Formula 5
Assume the print shop has a 1,000 CFM fan to exhaust a drying room. The
moisture required to humidify the drying room only is
1,000 x 5.08 x 60 min/hr
_________________________ = 44 lbs/hr
7,000 grains/lb
(Refer to Figure 1.)
(6) Using an economizer cycle:
(a) Care should be taken in sizing humidification load when an economizer cycle is
incorporated into a building HVAC system. The purpose of an economizer cycle is
to provide building cooling using outside air, rather then the building refrigeration
system when outside air conditions permit.
(b) The economizer cycle senses and compares outdoor air temperature and return
air temperature during the cooling season.
(c) When the HVAC system calls for cooling and the outdoor air temperature is low
enough – typically 55°F or lower – the outside air and exhaust air dampers are
positioned to provide the required supply air temperature to maintain cooling, and
the recirculated air damper is positioned to maintain the required supply air
volume. When the outdoor air temperature is higher than the supply air
temperature required to maintain cooling but is lower than the return air
temperature, the make-up air and exhaust air dampers are 100% open. The
recirculation air damper closes, and the building refrigeration system provides the
portion of cooling load that cannot be provided by outside air intake.
(d) From this it can be seen that it is possible to introduce 100% outside air into a
building during the cooling season.
(e) Formula 6
For example, if out print shop were using 100% outdoor air at 55°F and
40% rh, then the moisture required is
5.19 - (4.89 x 40% rh) = 3.23 gr/ft3
Therefore, on a 15,000 CFM system, the humidification load will be
15,000 x 3.23 x 60 min/hr
__________________________= 415 lbs/hr
7,000 grains/lb
(f) In the above examples, the largest humidification load was due to the economizer
cycle at 415 lbs/hr.
(7) Using cooling or refrigeration loads:
(a) As air is cooled, it loses it’s ability to hold moisture. If it is cooled enough, some of
the moisture will condense out. This is known as cooling load. Cooling load
calculations can be important for process applications or refrigeration applications
to product dehydration.
10-10
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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
= _4_._4_0__g_r_/f_t_3
________________________
Grains to add
= 0.79 gr/ft3
15,000 x 0.79 x 60 min/hr
_________________________
= 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
Temperature
Outside
Temperature
Inside Temperature (°F/°C)
Inside Temperature (°F/°C)
60/
15.5
65/
18.3
70/
21
75/
23.8
80/
26.6
60/
15.5
65/
18.3
70/
21
75/
23.8
80/
26.6
°F
°C
°F
°C
Single Windows, Still Air
Single Windows, Wind
-50
-40
-30
-20
-10
0
-45
-40
-34
-29
-23
-18
-12
-7
9
9
9
8
8
-50
-40
-30
-20
-10
0
-45
-40
-34
-29
-23
-18
-12
-7
4
3
4
3
4
3
4
2
3
12
16
20
25
32
39
47
57
70
12
14
18
23
29
36
43
52
63
11
14
18
22
27
33
40
50
60
10
13
17
21
25
31
37
45
53
10
13
16
20
24
29
35
42
50
5
7
6
6
6
5
10
14
20
28
36
48
62
9
9
8
7
13
18
24
32
41
54
12
16
22
30
38
49
11
15
20
26
34
43
10
13
18
24
30
40
10
10
20
30
40
20
-1
30
-1
4
40
4
NOTE: Bold areas indicate that moisture will be in the form of frost on windows.
10-10
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Table 5. Inside Relative Humidities At Which Moisture Will Condense On Windows (cont)
Outside
Temperature
Outside
Temperature
Inside Temperature (°F/°C)
Inside Temperature (°F/°C)
60/
15.5
65/
18.3
70/
21
75/
23.8
80/
26.6
60/
15.5
65/
18.3
70/
21
75/
23.8
80/
26.6
°F
°C
°F
°C
Double Windows, Still Air
Double Windows, Wind
-50
-40
-30
-20
-10
0
-45
-40
-34
-29
-23
-18
-12
-7
34
38
42
47
52
57
62
69
76
84
34
38
42
46
50
55
60
66
73
80
34
36
41
46
49
55
59
63
71
79
33
36
40
44
48
52
57
62
68
74
32
35
38
42
46
50
54
59
65
71
-50
-40
-30
-20
-10
0
-45
-40
-34
-29
-23
-18
-12
-7
23
32
36
41
46
52
58
65
72
80
26
30
34
39
45
49
56
63
70
78
26
30
34
38
42
47
53
59
66
73
26
29
32
35
42
46
52
58
64
70
25
28
31
35
39
44
49
54
60
67
10
20
30
40
10
20
30
40
-1
-1
4
4
NOTE: Bold areas indicate that moisture will be in the form of frost on windows.
Table 6. Regain of Hygroscopic Materials
Relative Humidity - %
40 50 60
3.9 5.0 6.5
Industry
Baking
Materials
10
2.1
2.6
20
2.8
4.1
30
3.3
5.3
70
80
90
Crackers
Flour
8.3 10.9 14.9
6.5
8.0
9.9 12.4 15.4 19.1
White Bread
0.5
1.7
3.1
4.5
6.2
8.5 11.1 14.5 19.0
Leather
Printing
Sole Oak, Tanned
5.0
3.2
8.5 11.2 13.6 16.0 18.3 20.6 24.0 29.2
Paper – Comm. Ledger – 75% Rag
1% Ash
4.2
5.0
5.6
6.2
6.9
8.1 10.3 13.9
Paper M.F. Newsprint – 24% Ash
Paper White Bond Rag – 1% Ash
Paper Writing – 3% Ash
2.1
2.4
3.0
3.2
3.7
4.2
4.0
4.7
5.2
4.7
5.5
6.2
6.1
6.5
7.2
7.2
7.5
8.3
8.7 10.6
8.8 10.8 13.2
9.9 11.9 14.2
Textile
Cotton – Absorbent
4.8
2.6
2.5
2.7
3.1
3.6
0.8
4.0
9.0 12.5 15.7 18.5 20.8 22.8 24.3 25.8
Cotton – American-cloth
Cotton – Sea Isle-roving
Hemp – Manila and Sisal
Jute – Average Grade
Linen – Dried Spun – Yarn
Rayon – Celulose – Acetate – Fibre
Rayon – Cupramonium – Average
Skein
3.7
3.7
4.7
5.2
5.4
1.1
5.7
4.4
4.6
6.0
6.9
6.5
1.4
6.8
5.2
5.6
7.2
5.9
6.6
8.5
6.8
7.9
8.1 10.0 14.3
9.5 11.5 14.1
9.9 11.6 13.6 15.7
8.5 10.2 12.2 14.4 17.1 20.2
7.3
1.9
7.9
8.1
2.4
8.9
3.0
9.8 11.2 13.8
3.6 4.3 5.3
9.2 10.8 12.4 14.2 10.0
Rayon – Viscose Nitrocel
Silk – Raw Chevennes-Skein
Wool – Australian-Marino-Skein
4.0
3.2
4.7
5.7
5.5
7.0
6.8
6.9
7.9
8.0
9.2 10.8 12.4 14.2 16.0
8.9 10.2 11.9 14.3 18.8
8.9 10.8 12.8 14.9 17.2 19.9 23.4
Tobacco
Wood
Cigarette
5.4
8.6 11.0 13.3 16.0 19.5 25.0 33.5 50.0
Timber – Average
Glue – Hide
3.0
3.4
4.4
4.8
5.9
5.8
7.6
6.6
9.3 11.3 14.0 17.5 22.0
7.6 9.0 10.7 11.8 12.5
Miscellaneous Charcoal-Steam Activated
7.1 14.3 22.8 26.2 28.3 29.2 30.0 31.1 32.7
Gelatin
Silica Gel
Soap
0.7
5.7
1.9
2.2
1.6
2.8
3.8
4.9
6.1
7.6
9.3 11.4
9.8 12.7 15.2 17.2 18.6 20.2 21.5 22.6
3.8
3.8
5.7
5.2
7.6 10.0 12.9 16.1 19.8 23.8
6.4 7.4 8.3 9.2 10.6 12.7
Starch
NOTE: Moisture content expressed in per cent of dry weight of the substance at various relative humidities –
Temperature 75°F.
10-10
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Table 7. Design Indoor Conditions For Various Places, Products and Processes
Relative
Humidity
%RH
Temperature
Product and/or Process
Abrasives Manufacturing
°F
78
°C
25
50
Bowling Alleys
Billiard Rooms
73 – 75
73 – 75
23 – 24
23 – 24
50 – 55
40 – 50
Bread
Flour and Powdered Product Storage
Fermentation (Bread Dough)
Retarding of Doughs
Final Proof
70 – 80
80
32 – 40
95 – 120
75
21 – 27
27
0 – 4
35 – 49
24
60
75
85
85 – 90
80 – 85
Counterflow Cooling
Brewing
Hop Storage
Yeast Culture Room
29 – 32
--
2 – 0
--
50 – 60
80
Candy
Chocolate Pan Supply Air
Enrober Room
Chocolate Cooling Tunnel Supply Air
Hand Dippers
55 – 62
80 – 85
40 – 45
62
13 – 17
27 – 29
4 – 7
45 – 55
25 – 30
70 – 85
45
17
Moulded Goods Cooling
Chocolate Packing Room and Finished Stock Storage
Centers Tempering Room
Marshmallow Setting Room
Grained Marshmallow (deposited in starch) Drying
Gum (deposited in starch) Drying
Sanded Gum Drying
Gum Finished Stock Storage
Sugar Pan Supply Air (engrossing)
Polishing Pan Supply Air
Pan Rooms
Nonpareil Pan Supply Air
Hard Candy Cooling Tunnel Supply Air
Hard Candy Packing
Hand Candy Storage
Caramel Rooms
40 – 45
65
75 – 80
75 – 78
110
4 – 7
18
24 – 27
24 – 26
43
70 – 85
50
30 – 35
40 – 45
40
15 – 25
25 – 40
65
20 – 30
40 – 50
30 – 35
20
125 – 150
52 – 66
38
100
50 – 65
85 – 105
70 – 80
75 – 80
100 – 120
60 – 70
70 – 75
50 – 70
70 – 80
10 – 18
29 – 41
21 – 27
24 – 27
38 – 49
16 – 21
21 – 24
10 – 21
21 – 27
40 – 55
35 – 40
40
40
Raw Material Storage
Nuts (insect)
Nuts (rancidity)
Eggs
Chocolate (flats)
Butter
45
34 – 38
30
65
20
7
1 – 3
-1
18
65 – 75
65 – 75
85 – 90
50
-7
Dates, Figs, etc.
Corn Syrup
Liquid Sugar
40 – 45
90 – 100
75 – 80
75 – 80
4 – 7
32 – 38
24 – 27
24 – 27
65 – 75
–
30 – 40
Comfort Air Conditioners
50 – 60
Ceramics
Refractory
Molding Room
Clay Storage
Decalcomania Production and Decorating room
Cereal Packaging
110 – 150
80
60 – 80
75 – 80
75 – 80
43 – 66
27
16 – 27
24 – 27
24 – 27
50 – 90
60 – 70
35 – 65
48
45 – 50
Cheese Curing
Cheddar
Swiss
Blue
Brick
Limburger
Camembert
45 – 55
60
48 – 50
60 – 65
60 – 65
53 – 59
7 – 13
16
9 – 10
16 – 18
16 – 18
12 – 15
85 – 90
80 – 85
95
90
95
90
10-10
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Table 7. Design Indoor Conditions For Various Places, Products and Processes (cont)
Relative
Humidity
%RH
Temperature
Product and/or Process
°F
°C
Clean Rooms – Computer Rooms
Computer Room
Clean Room – General
Clean Room – Critical
70 – 80
70 – 74
71.5 – 72.5
21 – 27
21 – 23
22 – 22.5
40 – 60
40 – 60
43 – 47
Distilling
Grain Storage
General Manufacturing
Aging
60
0 – 75
65 – 72
16
16 – 24
18 – 22
35 – 40
45 – 60
50 – 60
Electrical Products
Coil and Transformer Winding
X-ray Tube Assembly
Instruments Manufacture and Laboratory
Thermostat and Humidistat Assembly and Calibration
Close Tolerance Assembly
Meter Assembly and Test
Fuse and Cutout Assembly, Capacitor Winding and Paper Storage
Conductor Wrapping with Yarn
Lightning Arrestor Assembly
Thermal Circuit Breaker Assembly and Test Water Wheel Generators
Thrust
72
68
70
76
72
76
73
75
68
76
22
20
21
24
22
24
23
24
20
24
15
40
50 – 55
50 – 55
40 – 45
60 – 63
50
65 – 70
20 – 40
30 – 60
Runner Hopping
Processing Selenium and Copper Oxide Plates
70
74
21
23
30 – 50
30 – 40
Fruit Storage
Apples
Apricots
30 – 40
31 – 32
58 – 60
50
31 – 32
30 – 31
58 – 60
40 – 44
32 – 34
31
-1– 4
-1 – 0
14 – 16
10
-1 – 0
-1
14 – 16
4 – 7
0 – 1
-1
-1 – 0
3 – 4
90
90 – 95
85 – 90
85 – 90
85
90 – 95
86 – 88
85 – 90
85 – 90
90
Grapefruits (California)
Grapefruits (Florida)
Grapes (Eastern)
Grapes (Western)
Lemons
Oranges (California)
Oranges (Florida)
Peaches and Nectarines
Plums
30 – 32
38 – 40
90 – 95
90 – 95
Specialty Citrus Fruit
Fur Storage
40 – 50
4 – 10
55 – 65
Gum
Manufacture
Rolling
Stripping
Breaking
Wrapping
77
68
72
74
74
25
20
22
23
23
33
63
53
47
58
Hospitals
Operating, Cystoscopic and Fracture Rooms
Patient Rooms
68 – 76
75
20 – 24
24
50
40 – 50
Intensive Care Unit
Administrative and Service Areas
75
70 – 80
24
21 – 27
40
30 – 50
Leather
Drying
70 – 120
50 – 60
21 – 49
10 – 16
75
40 – 60
Storage, Winter Room Temperature
Lenses (Optical)
Fusing
Grinding
75
80
27
27
45
80
10-10
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Table 7. Design Indoor Conditions For Various Places, Products and Processes (cont)
Relative
Humidity
%RH
Temperature
Product and/or Process
°F
°C
Libraries and Museums
Normal Reading and Viewing Rooms
Rare Manuscript Storage Vaults
Art Storage Areas
70 – 74
70 – 72
65 – 72
21 – 23
21 – 22
17 – 22
40 – 50
45
50
Matches
Manufacture
Drying
72 – 74
70 – 75
60 – 62
22 – 23
21 – 24
16 – 17
50
60
50
Storage
Meat and Fish
Beef (Fresh)
Beef, Fish, Lamb and Pork (Frozen)
Fish (Fresh)
32 –34
-10 – 0
33 – 35
32 – 34
0 – 1
-23 – -18
1 – 3
88 – 92
90 – 95
90 – 95
85 – 90
Lamb and Pork (Fresh)
0 – 1
Mushrooms
Sweating-out Period
Spawn Added
Growing Period
Storage
120 – 140
60 – 75
48 – 60
32 – 35
49 – 60
16 – 24
9 – 16
0 – 2
–
Nearly Sat.
80
80 – 85
Oil Paints: Paint Spraying
60 – 90
16 – 32
80
Pharmaceuticals
Manufactured Powder Storage and Packaging Area
Milling Room, Table Compressing and Coating
Effervescent Tablets and Powders
Hypodermic Tablets
75
75
75
24
24
24
35
35
20
75
24
30
Colloids
Cough Drops
70
80
21
27
30 – 50
40
Glandular Products
76
75
76
76
24
24
24
24
5 – 10
35 – 50
35
Ampoule Manufacturing
Gelatin Capsules and Storage
Microanalysis
50
Biological Manufacturing and Liver Extracts
Serums
Animal Rooms
76
76
75 – 80
24
24
24 – 27
35
50
50
Plastics
Manufacturing Areas Thermosetting
Molding Compounds
Cellophane Wrapping
80
75 – 80
27
24 – 27
35 – 30
45 – 65
Plywood
Hot Pressing (Resin)
Cold Pressing
90
90
32
32
60
15 – 25
Printing
Platemaking
75 – 80
76 – 80
76 – 80
76 – 80
24 – 27
24 – 27
24 – 27
24 – 27
45 Max
43 – 47
50
Lithographic Press Room
Letterpress and Web Offset Press Rooms and Paper Storage
Paper Storage (Multicolor Sheet Feed Lithography)
5 – 8
Higher than
Press Room
Rubber Dipped Goods
Cementing
Dipping Surgical Articles
Storage Prior to Manufacture
Laboratory (ASTM Standard)
80
27
25 – 30
25 – 30
40 – 50
50
75 – 90
60 – 75
73.4
24 – 32
16 – 24
23
Tea Packaging
65
18
65
10-10
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Table 7. Design Indoor Conditions For Various Places, Products and Processes (cont)
Relative
Humidity
%RH
Temperature
Product and/or Process
°F
°C
Textiles
Opening and Picking
Cotton
Man-Made
Carding
75 – 80
70 – 75
24 – 27
21 – 24
55 – 70
50 – 55
Cotton
Wool
Man-Made
75 – 80
75 – 80
70 – 75
24 – 27
24 – 27
21 – 24
50 – 55
60 – 70
50 – 60
Silver and Ribbon Lapping
Cotton
Man-Made
Combing
Cotton
Wool
Man-Made
Drawing
75 – 80
70 – 75
24 – 27
21 – 24
55 – 60
55 – 65
75 – 80
75 – 80
70 – 75
24 – 27
24 – 27
21 – 24
55 – 65
65 – 75
55 – 65
Cotton and Wool
Man-Made
Roving
75 – 80
70 – 75
24 – 27
21 – 24
50 – 60
50 – 60
Cotton
75 – 80
70 – 75
24 – 27
21 – 24
50 – 60
50 – 60
Man-Made
Spinning
Cotton
75 – 80
75 – 80
70 – 75
24 – 27
24 – 27
21 – 24
35 – 60
50 – 55
50 – 65
Wool
Man-Made
Winding and Spooling
Cotton
Wool
Man-Made
75 – 80
75 – 80
70 – 75
24 – 27
24 – 27
21 – 24
55 – 65
55 – 60
60 – 65
Twisting
Cotton
Man-Made
75 – 80
70 – 75
24 – 27
21 – 24
50 – 65
50 – 65
Warping
Cotton
Wool
Man-Made
Knitting
75 – 80
75 – 80
70 – 75
24 – 27
24 – 27
21 – 24
55 – 70
50 – 65
50 – 65
Cotton
76
76
24
24
60 – 65
50 – 60
Man-Made
Weaving
Cotton
Wool
Man-Made
75 – 80
75 – 80
70 – 75
24 – 27
24 – 27
21 – 24
70 – 85
50 – 60
60 – 70
Tobacco
Cigar and Cigarette Making
Softening
Stemming and Stripping
Filler Tobacco Casing and Conditioning
Filler Tobacco Storage and Preparation
Wrapper Tobacco Storage and Conditioning
70 – 75
90
75 – 85
75
78
75
21 – 24
32
24 – 29
24
26
24
55 – 65
85 – 88
70 – 75
75
70
75
10-10
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Figure 2. Psychrometric Chart
10-10
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2. STEAM ABSORPTION AND DISTRIBUTION
A. VARIABLES THAT AFFECT ABSORPTION DISTANCES
(1) This manual will help in the design of a steam distribution system to provide the
optimum performance from the humidifier and absorption of steam within the duct
system.
(2) Experience has shown that absorption of steam is affected primarily by the
psychrometric conditions of the air based on how much residual capacity at a given air
volume and temperature exist to hold the moisture being introduced.
(3) To properly introduce steam into an air stream, five variables must be known:
(a) Temperature (°F or °C). If the air temperature varies, pick the lowest temperature.
(b) Highest humidity level before the distributor (%rh).
(c) The amount of moisture being added resulting in a change of rh in the duct or
plenum (Δ %rh).
(d) Minimum velocity of the air (FPM).
(e) The size of the duct or plenum (cross section area).
(4) As a guide, Table 8 shows how each variable affects the absorption distance.
(5) Table 9 shows examples of typical absorption distances in air handling systems.
(6) Referring to Figure 3, ‘D’ can vary between 1 to 20 feet depending on the airflow’s:
(a) Velocity (V)
(b) Temperature (T)
(c) Humidity (H)
(7) When (V) is 500 fpm, (T) is high (90 to 130°F) and (H) is low (10% to 30% rh) the ‘D’ will
be 1 to 2 feet. As the (H) goes up ‘D’ becomes longer. Similarly, as (T) goes down, ‘D’
goes up. High velocity also increases ‘D’ by moving the steam further down stream
before it can mix. Multiple distributors will shorten the steam absorption distance.
Table 8. Variables That Affect Absorption Distances
Effect On Absorption Distance
(NOTE: ↑ Increase ↓ Decrease
Variables
Air Temperature ↑
↓
Air Temperature ↓
↑
Air Humidity ↑
↑
Air Humidity ↓
↓
Large Increase of RH
↑
Small Increase of RH
↓
High Air Velocity (1000 fpm or above)
↑
Low air Velocity (between 100 and 500 fpm)
↓
Small Duct or Plenum (short distributor)
↑
Large Duct or Plenum (long distributor)
↓
10-10
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Table 9. Typical Absorption Distances, Single Distributor, 100 lbs/hr Humidifier
FPM
(V)
°F
°C
% RH
(H)
30
FT
CM
Typical System
Air handler before coils
(T)
(D)
500
70
55
21
13
21
13
13
43
21
13
60
3.0
4.5
3.5
6.0
8.0
2.5
4.0
10.0
2.0
91
137
107
183
244
76
500
80
Air handler after cooling
900
70
30
Supply air duct, on cool, no heat
Supply air duct, on cool
900
55
70
1000
1000
1000
2000
5000
55
90
Supply air duct, on cool with high humidity
Supply air duct, on heating with low humidity
Return air duct conditions
110
70
10
45
123
305
61
55
45
Supply air duct higher pressure system
After operating heating coil
140
10
(V) = Velocity at distributor location
(D) = Absorption distance (visible steam)
(T) = Temperature at distributor location
(H) = Humidity level after steam is absorbed
NOTE: This chart is for reference only; multiple distributors can reduce absorption distances.
Figure 3. Steam Distributor Location
10-10
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B. CALCULATING THE DOWN STREAM HUMIDITY LEVEL
(1) Table 10 indicates the amount of water that each 1000 CFM of duct air holds in pounds
of water per hour at various combinations or air temperature and relative humidity.
Subtract the water vapour in the duct air before the steam distributor from the
maximum allowed after the distributor. The chart indicates how many lbs/hr of water
can be added to 1000 CFM of airflow.
Table 10. Water (lbs/hr) Contained in 1000 CFM of Air
°F
50
55
60
65
70
75
80
85
90
95
100
10%
3.52
20%
7.04
30%
40%
14.06
16.76
19.88
23.48
27.78
32.40
37.84
44.12
51.20
59.24
68.40
50%
17.60
20.95
24.85
29.35
34.70
40.50
47.30
55.15
64.00
74.05
85.50
60%
21.12
25.14
29.82
35.22
41.64
48.60
56.76
66.18
76.80
88.86
102.60
70%
24.65
29.33
34.79
41.09
48.58
56.70
66.22
77.21
89.60
103.67
119.60
80%
26.16
33.52
39.76
46.96
55.52
64.80
75.68
88.24
102.4
118.48
136.80
85%
29.92
35.62
42.25
49.73
58.99
68.85
80.41
93.75
108.80
125.89
145.54
10.56
12.57
14.91
17.61
20.82
24.30
28.36
33.09
38.40
44.43
51.20
4.19
8.38
4.97
9.94
5.85
11.74
13.80
16.20
18.92
22.08
25.60
29.62
34.20
6.94
8.10
9.46
11.03
12.80
14.81
17.10
(2) The following are two examples:
Example 1:
3000 CFM air handler with 60°F and 30% rh air before the steam distributor.
Calculate the maximum rate of steam addition without exceeding 80% rh in the duct.
60° & 80% = 39.76 lbs/hr
60° & 30% = 14.91 lbs/hr
____________________
24.85 lbs/hr can be added to 1000 CFM
x 3 (3000CFM)
____________
74.55 lbs/hr can be added to 3000 CFM
If the load calculation of this system requires a 100 lbs/hr unit, then due to the above
possible conditions, the project requires a modulating high limit humidistat to limit the
humidifier output to a maximum of 74 lbs/hr and maintain 80% rh.
Example 2:
Humidification load is 30 lbs/hr. To avoid exceeding 80% rh in the duct, calculate the
minimum allowable CFM at 55°F. Duct conditions are 55°F and 50% rh.
55° & 80% = 33.53 lbs/hr
55° & 50% = 20.95 lbs/hr
____________________
12.57 lbs/hr can be added to 1000 CFM
(30 lbs/hr ÷ 12.57) x 1000 = 2386 CFM minimum
10-10
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NOTE
Maximum capacity of the NHTC/NHPC humidifier can be limited through the keypad.
C. CONTROL OF DUCT OR PLENUM SATURATION
(1) NORTEC always recommends the use of a high limit humidistat set at 85% relative
humidity in combination with an air-proving switch to assure air movement. Both of
these controls are wired in series across the primary control terminals of the humidifiers
so that should either of these conditions not be satisfied the humidifiers cannot operate.
(2) Low temperature, shallow ducts or branch ducts might require a field supplied
condensate drain pan and should be accessible to service and inspection (See
Figure 4.).
(3) The most effective method of ensuring controlled absorption distances is to install a
modulating high limit humidistat. By controlling the down stream [after distributor(s)]
humidity levels and modulating the humidifier’s output, one of the variables affecting
absorption distance is now a constant. NORTEC recommends modulating high limit
humidistats on all economizer systems, VAV, VVT, and systems, which are primarily
cooling.
Figure 4. Condensate Drain Pan
10-10
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3. STEAM RUNS AND CONDENSATE RETURNS
A. STEAM RUNS
(1) Steam runs between the humidifier and the distributors can be accomplished by using
flexible NORTEC steam hose or insulated copper pipe. The longer the steam run,
including elbows, the lower the efficiency of the system. The more elbows and turns,
the higher the losses become. The humidifier should be as close as possible to the
distributor and the steam run should be as direct as possible.
(2) Guidelines for installation are:
(a) Locate humidifier as close as possible to the duct system.
(b) NORTEC steam hose should only be used on short steam runs below 10 feet.
(c) Minimize elbows and turns.
(d) Ensure that no condensate produced in the steam line will remain trapped. Steam
naturally flows upward and condensate naturally flows downward. Always slope
the steam run towards the steam source at a 15° pitch no more (See Figure 5.).
(e) Oversize condensate line and steam line of long runs (consult your
representative).
(f) See material recommended for use in Table 11. To eliminate corrosion, NORTEC
does not recommend the use of steel piping.
(g) Consult Table 12 and Table 13 for steam and condensate sizing guidelines when
using steam distributors.
Figure 5. Proper Slope
Figure 6. Drain Tee
see Fig 9 for proper P Trap design and installation
10-10
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Table 11. Steam Line Material
Steam Hose
Copper Tube
Stainless Steel Tube
Short run < 10 feet (3 m)
Long run > 10 feet (3 m)
yes
yes
yes
yes
yes
NOTE: Steel, Iron and aluminum tubing or pipe must not be used for the steam distribution lines with these humidifiers.
Plastic tubing and pipe also must not be used for steam distribution lines.
Table 12. Recommended Material and Size for Steam Run
Load
Steam Run
Steam Line
Material
Steam Line
Description
lb/hr
kg/hr
ft
m
0-30
0-13
0-10
0-3
Copper Tube
¾" MED-L
Tubing
(f" OD)
0-30
0-30
0-13
0-13
10 +
0-10
10 +
0-20
3 +
0-3
3 +
0-6
Copper Tube
1"MED-LTubing
(1c" OD)
Stainless Steel
Tube
f" Tube x
0.049" thick.
0-30
0-13
Stainless Steel
Tube
1c"Tube x
0.049” thick.
30-100
13-45
Copper Tube
1½" MED-L
Tubing
(1e"
OD)
30-100
30-100
30-100
13-45
13-45
13-45
20 +
0-20
20 +
6 +
0-6
6 +
Copper Tube
2"MED-LTubing
(2c"OD)
Stainless Steel
Tube
1¾" Tube x
0.065" thick.
Stainless Steel
Tube
2" Tube x
0.065" thick.
NOTE: Options shown in a bold-italic font require that reducers be used at both ends. These extra large sizes are to
allow for better condensation removal in long steam runs. These sizes do not permit the use of hose couplings
to connect either humidifier or distributors.
NOTE: Insulate all copper or stainless steel steam lines with minimum one inch high temperature insulation.
Table 13. Recommended Condensate Line at Distributor(s)
Dispersion Method
Condensate Hose
Copper Tube
Stainless Steel Tube
1 x Steam Distributor
d" NORTEC 1328840
¼" MED-L Tubing
OD)
(d"
d" Tube 0.049" thick.
3 x Steam Distributor*
d" NORTEC 1328840
½" MED-L Tubing
e" Tube 0.049" thick
(f" OD)
NOTE: When using more than one distributor, the condensate line should be trapped before it is joined together.
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(3) NORTEC recommends the use of insulated hard copper steam lines on distances of
more than 10 feet and no more than 3 elbows (90⊃). The use of flexible steam hose on
runs of more than 10 feet can reduce these recommended distances in Table 14 by as
much as 25%. Steam hose can crimp and cause back pressure.
Table 14. Maximum Recommended Length of Steam Runs
Unit Size
NH-005
NH-010
NH-020
NH-030
NH-050
NH-075
NH-100
NH-150
NH-200
Steam Output
5 lbs/hr
Distance
8 feet
Possible Losses
1.0 lbs/hr
10 lbs/hr
20 lbs/hr
30 lbs/hr
50 lbs/hr
75 lbs/hr
100 lbs/hr
150 lbs/hr
200 lbs/hr
15 feet
1.5 lbs/hr
20 feet *
2.0 lbs/hr
25 feet *
2.5 lbs/hr
40 feet **
4.0 lbs/hr
50 feet **
5.0 to 10.0 lbs/hr
5.0 to 10.0 lbs/hr
5.0 to 10.0 lbs/hr
5.0 to 10.0 lbs/hr
50 feet **
50 feet/cylinder **
50 feet/cylinder **
* Use one inch copper steam supply for longer runs.
** Use two inch copper steam supply for longer runs.
NOTES: 1. This table gives the maximum recommended length of steam run by unit size.
2. The use of any steam line other than copper or NORTEC supplied steam hose will void the warranty and
may adversely effect the operation of the humidifier.
(4) Steam lines should slope upwards from the humidifier to the steam distributor. (See
Figure 7.)
(5) Flexible steam hose, if used, must be supported to avoid crimps, bends, and sags.
(Please consult local agent if proper slopes are not available.)
(6) If the steam supply line must be routed below the humidifier location, a condensate trap
‘tee’ will be required to prevent blockage at the low point in the steam line. Run the
condensate hose to the nearest floor drain after trapping. (See Figure 8.)
(7) Long steam runs with improper slopes can produce spitting at the distributor because
the steam is travelling at a high velocity and will push condensate out the distributor. If
a slope of 2" for every 12" of steam run cannot be achieved, then condensate must be
removed before the distributor. (See Figure 4.)
B. CONDENSATE RETURN
(1) Each steam distributor has a built-in condensate return. (See Figure 9.) Flexible
condensate return hose (available from NORTEC) is recommended for routing
condensate back into the humidifier’s fill cup, or to a drain. A short length of d" OD
copper tubing is supplied by NORTEC when routing condensate hose back to the fill
cup. Similarly, a short length of d" condensate hose is supplied to serve as a flexible
coupling with field-supplied copper condensate line. Long condensate runs should be
drained to a floor drain to prevent excessive condensate water from entering the
cylinder.
NOTE
Excessively long steam runs (over 20 feet) may require the use of ½" OD condensate
return lines – supplied by others.
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(2) Use vertical condensate leg of
distributor only. Do not
over-tighten clamp.
(3) Drip stations on steam mains must
be located at all low points in the
system, at each elevation change
and or directional change.
(4) Horizontal runs of steam must
have a 2" rise per foot (10°) when
flow is going away from drip station
and the steam run is to fall ½" per
foot (2°) when flow is going
towards drip station.
(5) In a horizontal run of the steam
main, drip stations must be located
at regular intervals of 20 feet.
(6) The drip station itself is a section
of piping connected to the bottom
of the main. A full size tee must be
used to create a drip station to
allow the condensate to fall in the
drip station.
Figure 7. Steam Line Connection
Figure 8. Condensate Tee At Any Low Point
In Steam Line
Figure 9. Trap To Prevent Steam In
Condensate Line
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(7) Vertical drop of the drip station should be 1.5 times the diameter of the steam main but
no less then 12".
(8) Install the P trap at the botom of the drip station. The P trap height is to be a minimum
of 6 inches or 2 “ greater than the static pressure in the duct.
(9) All distributors must be individually trapped.
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4. STEAM DISTRIBUTORS (ASD, BSD, CSD)
A. STEAM DISTRIBUTORS
(1) NORTEC’s steam distributors, in use for over twenty years, are a proven design to suit
applications for the introduction of atmospheric steam.
(2) Features and benefits of steam distributors are:
(a) Expanded diameter of tube to reduce steam velocity and the potential for
condensate carryover into the duct.
(b) Positive removal of condensate.
(c) Lower mass of metal (stainless steel), which reduces ‘radiator effect and
condensate’ and results in higher efficiency of humidifier output while reducing
condensate formation.
(d) Designed specifically for atmospheric steam generation.
(e) Modular so that the exact quantity of distributors can be configured to meet
specific application requirements. This reduces system complexity and installation
costs.
B. DISTRIBUTOR CHARACTERISTICS
(1) NORTEC steam distributors are constructed of stainless steel and include in low point
condensate return to prevent the condensate from collecting in the steam distributor.
This enables entrained condensate to settle to the bottom of the steam distributor
where it is removed by the condensate return. These features allow the NORTEC
steam distributors to be installed level in the duct, thereby utilizing the full available
width of the duct. (See Figure 10.)
Figure 10. Levelling the Distributor
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(2) Ensure the total capacity of the humidifier is not higher than the allowable maximum
steam capacity of the following distributors:
(a) ASD: 25 lbs/hr (9 kg/hr)
(b) BSD: 35 lbs/hr (13 kg/hr)
(c) CSD: 115 lbs/hr (45 kg/hr)
C. DISTRIBUTOR LOCATIONS AND MOUNTING
(1) NORTEC distributors can be mounted in air handlers, supply air ducts or return air
ducts. Return air ducts should only be considered if all of the return air enters the
building again and is not exhausted by the air handling device. Distributors should be
mounted center or low within the duct or plenum. (See Figure 11.) Laminar airflow is
best. Down stream obstruction must be considered. The non-absorbed steam may
affect devices like smoke detectors down stream. Total steam absorption must be
accomplished before filters and silencers.
(2) Distributors come complete with a mounting plate. (See Figure 12.) Most ducts and
plenums are rigid enough to support the distributor.
(3) Longer distributors (more than 36") and distributors mounted on lighter gage sheet
metal which cannot support the distributor level in the duct will need to be supported on
the end. (See Figure 10.)
D. MULTIPLE DISTRIBUTOR APPLICATIONS
(1) The use of multiple steam distributors can reduce the absorption distance in most
situations. Distributors can be manifolded together to create a grid to achieve shorter
absorption distances. (Consult agent and/or see Nomogram Figure 13.
CAUTION
THESE INSTALLATION
GUIDELINES APPLY FOR DUCT
VELOCITIES UNDER 2000 FT/
MIN (610 M/MIN), PLEASE
CONSULT FACTORY FOR
HIGHER VELOCITIES
CAUTION
PLEASE MAKE SURE NO
OBSTACLES (ELBOW, FILTER,
OR DIFFUSER) ARE LOCATED
AFTER THE DISTRIBUTOR IN
THE DIRECTION OF THE
AIRFLOW CLOSER THAN THE
ABORPTION DISTANCE
CALCULATED FOR YOUR
APPLICATION.
CAUTION
FOR APPLICATIONS WITH
HIGH STATIC PRESSURES
PLEASE CONSULT FACTORY
Figure 11. Single Steam Distributor
Installation – Minimum Clearance
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Figure 12. Cutting Duct For Mounting
Figure 13. Humidification Distance Nomogram
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CAUTION
UNLESS YOU KNOW THE EXACT ABORPTION DISTANCE
REQUIRED FOR THE STEAM ABSORPTION INTO THE AIR STREAM,
THE DISTRIBUTOR SHOULD BE LOCATED AT LEAST 8-10 FT (2-3 M)
AWAY FROM ANY OBSTACLE IT MAY CONDENSE ON (ELBOW,
DIFFUSER, FILTER, ETC.)
(2) Duct vertical clearance requirements for standard steam distributors are as follows:
(a) ASD
(b) BSD
(c) CDS
- 8 in. vertical duct height for 1st ASD
- 5.5 in. additional duct height for each additional ASD
= ROUNDDOWN (‘DuctHeight’ - 8")/5.5) + 1
- 10 in. vertical duct height for 1st BSD
- 6.375 in. additional duct height for each additional BSD
= ROUNDDOWN (‘DuctHeight’ - 10")/6.375) + 1
- 14 in. vertical duct height for 1st CSD
- 9 in. additional duct height for each additional CSD
= ROUNDDOWN (‘DuctHeight’ - 14")/9) + 1
NOTE
These requirements apply to vertical arrangements of multiple distributors ONLY.
Diagonal arrangements utilize an alternative method.
E. LOCATION OF STEAM DISTRIBUTORS WITHIN AN AIR HANDLER
(1) Humidify after the heating
coil (H/C) so that absorption will
occur in the 3 to 4 feet before the
cooling coil (C/C). If steam carries
over and condenses on the coil,
any excess water will be drained
away. There is little chance of
condensation on the blower,
blower motor, or fan isolation
components, especially if you use
a modulating high limit humidistat.
All steam distributors should be 8"
from the H/C and evenly spaced. If
wetting is a problem, add more
steam distributors. (See
Nomogram Figure 13 and
Figure 14).
F. DISTRIBUTOR ABSORPTION
DISTANCE
(1) The water vapor discharged from
the steam distributor must be
adequately mixed with air to
prevent condensation on
Figure 14. Best Location for Multiple Steam
downstream components. The
Distributors in AHU
nomogram in figure 13 will
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determine the number of steam distributors that must be use for short saturation
distances.
(2) If the ‘Saturation Distance’ for one steam distributor is not sufficient, add more steam
distributors until the minimum saturation distance is attained. (See Figure 13.)
(3) To determine the number of distributors required, complete the following list:
(a) Air humidity after humidification _____ %rh. (A high limit humidistat should be set
at 80 – 85% to prevent wetting of ducts.)
(b) Air temperature before humidification _____.
(c) Air velocity in duct _____ ft/min.
(d) Maximum steam mass flow _____ lbs/hr.
(e) Active zone H of steam distributor _____ in. (See Figure 13.)
NOTE
The manufacturer recommends the appropriate distance modification factors when
filters or humidification sensors are installed downstream. For applications that are
outside of the Nomogram’s range, please consult a NORTEC representative.
G. TYPICAL APPLICATIONS
(1) Representations of typical applications are found in Figure 15 and Figure 16.
H. DISTRIBUTOR DIMENSIONS
(1) Distributor dimensions for the various distributor models can be found in
Chapter 10-30.
Figure 15. Roof Top Units 2-20 Tons –
Typical Location
Figure 16. Small Units On Residential
Furnaces
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5. SHORT ABSORPTION MANIFOLD (SAM-e)
A. GENERAL
(1) NORTEC’s best performing steam absorption system for use in Air Handling Units and
duct systems where short steam absorption distance is critical.
(2) The SAM-e, Figure 17, distributes clean steam, precisely controlled, uniformly into the
entire air stream, void of any condensate spray. Steam distribution takes place via
distributor tubes with integrated nozzles. The steam is kept dry as condensate is
drained through the main header.
(3) The stainless steel distribution tubes are typically mounted vertically but can also be
mounted horizontally (10° slope) for vertical airflow applications. The distribution tubes
come equipped with evenly spaced stainless steel nozzles providing optimum steam
distribution, over the entire length of the tube.
(4) The nozzles extend into the center of the distribution tube ensuring only condensate
free steam is released. (See Figure 18.) Condensate drains out of the distribution
tubes, through the header, eliminating the need for jacketed tubes. A permanent bond
between the nozzle and distribution tube is made when the nozzle is pressed into the
tube. The nozzles and tubes have the same thermal expansion characteristics
guaranteeing a permanent union. The specifically sized orifices ensure consistent
output from each nozzle.
Figure 17. SAM-e Tubes
Figure 18. Cross-Section of Distributor Pipe
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(5) The features of the short absorption manifold are:
(a) Inlets/Outlets located on same side, one access point required.
(b) All stainless steel distributors and nozzles ensure permanent bond.
(c) Stainless steel header with rubber grommet seals for easy installation of
distribution tubes.
(d) Adjustable mounting frame available for quick and easy installation.
(e) Available with 3", 6", 9", or 12" center-to-center distributor spacing.
(f) Atmospheric steam source.
(g) Two year limited warranty.
B. DETERMINING THE STEAM ABSORPTION DISTANCE
NOTE
Visit www.humidity.com to download our Humidification Engineering & Loadsizing
Program (H.E.L.P.) to help you calculate the absorption distance.
(1) Injecting steam into the air requires a certain amount of time before the steam is
absorbed completely.
(2) In a moving air stream, this time results in the steam moving a fixed distance from the
manifold before it is fully absorbed.
(3) Knowing the absorption distance will ensure that steam will not condense on any
critical components following the steam distribution area.
(4) The system should be designed to eliminate the possibility of wetting internal
components by positioning the manifold in the optimum location and by keeping the
absorption distance to a minimum.
(5) The absorption distance can be calculated using the Z ratio. The Z ratio and the
following method may be used as a guide to calculate the absorption in various air
handlers, and ducts with different conditions. It can be calculated as follows:
(RHah - RHbh)
Z = ––––––––––
(100 - RHbh)
RHah = Percentage of relative humidity after humidification.
RHbh = Percentage of relative humidity before humidification.
Example 1:
• 55°F (12.8°C)/ 12% RH - Conditions before humidification.
• 20 000 CFM (33 980 m3/h)
• 400 lbs/hr (181 kg/hr) load
Using the H.E.L.P. Software or a psychrometric chart you can find that the
humidity conditions after adding 400 lbs/hr (181 kg/h) of steam, are 55°F (12.8°C)
61% rh.
Thus giving:
RHbh = 12%
RHah = 61%
Z= (61 - 12) / (100 - 12) = 0.56
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(6) Absorption Distances:
3" centers = 7" (18 cm)
6" centers = 9" (23 cm)
9" centers = 12" (31 cm)
12" centers = 18" (46 cm)
(7) Reference Figures 19, 20, 21 and 22 to determine the center-to-center spacing
required.
NOTES
1. The absorption distance data is based on 55°F (13°C) minimum temperature
before humidification.
2. Data is based on velocities between 200 fpm (101 cm/s) and
2500 fpm (1270 cm/s).
3. Absorption distance: This is the distance between the SAM-e and the first
obstruction (coil, elbow, damper, etc.) and the first obstruction steam may hit.
Traces of steam may pass this obstruction, but will not condense, leaving
obstructions dry.
4. If any of the duct AHU conditions are changed, the absorption distance may
change due to increase or decrease in duct temperatures, amount of fresh air,
various outside conditions, set point requirements, etc. If this occurs, re-calculate
the absorption distance, and determine if the SAM-e needs to be modified or
relocated.
C. STATIC AIR PRESSURE
(1) Table 15 shows the static pressure loss created by a SAM-e in various velocities.
Table 15. Air Pressure Loss in AHU/Duct
Air Pressure Loss (inches of water column)
Air Velocity fpm
SAM-e Tube Spacing
(cm/s)
3" (7.6 cm)
0.01 (0.02)
0.03 (0.08)
0.05 (0.013)
0.07 (0.18)
0.09 (0.23)
0.10 (0.25)
0.12 (0.30)
6" (15.2 cm)
0.01 (0.02)
0.01 (0.02)
0.02 (0.05)
0.03 (0.08)
0.04 (0.10)
0.06 (0.15)
0.08 (0.20)
9" (22.7 cm)
12" (30.5 cm)
500 (255)
750 (383)
No measurable data
1000 (510)
1250 (638)
1500 (765)
1750 (893)
2000 (1020)
0.01
0.01
0.01
0.01
0.01
0.01
D. CONDENSATE LOSSES
(1) The SAM-e will condense some of the steam generated by the NORTEC humidifiers.
To compensate for this loss in capacity, we must increase the calculated humidification
load accordingly. Refer to Table 16.
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Figure 19. Absorption Distance – 3" Centers
Figure 20. Absorption Distance – 6" Centers
Figure 21. Absorption Distance – 9" Centers
Figure 22. Absorption Distance –
12" Centers
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(2) NORTEC recommends the installation of a condensate drain on the steam inlet run
prior to entering the SAM-e.
Table 16. Condensate Loss
Condensate Losses (% of Maximum Capacity)
Air Velocity fpm (cm/s)
55°F
15%
20%
70°F
12%
15%
500 (255)
1000 (510)
NOTE: These values may increase or decrease due to many unknown conditions or variables. This is only a guideline.
E. CORRECT CHOICE OF PRODUCT APPLICATIONS (WITHIN SAM-e)
(1) The SAM-e has been designed exclusively for use in building ventilation duct systems,
where manufacturing, processing and hi-tech activities are conducted. Applications that
do not conform to the design parameters are not recommended and will be at the
user’s own risk. NORTEC produces a wide range of different humidification systems to
suit virtually all normal applications, and will be happy to recommend the most
appropriate system to suit each particular requirements.
F. SAM-e DIMENSIONS
(1) Dimensions for the SAM-e and mini SAM-e can be found in Figure 6 and Figure 7 in
Chapter 10-30.
G. SAM-e HEADER SELECTION
(1) NORTEC offers different ranges of manifolds to cover capacities and duct sizes. The
absorption distance and capacity required will determine the center to center spacing
between each steam tube on the header. There are four options: 3" (7.6 cm),
6" (15.2 cm), 9" (22.9 cm) or 12" (30.5 cm). The smaller the spacing, the more tubes
the header can accommodate, thus giving a better absorption distance and greater
capacity. (See Tables 17 to 20.)
(2) The header remains the same for in-duct or outside duct mounting, for atmospheric
steam, and for vertical or horizontal flow applications. (See Figure 23.)
(3) Atmospheric manifolds with a capacity over 801 lbs/hr (362 kg/hr) will include a second
steam inlet on the header. Consult factory submittal drawings for specific details.
(4) Select the header part number associated with your duct or air handling unit’s width.
For example, if the duct width is 80" (198.11 cm), select part number 150-3279 for
3" (7.6 cm) center-to-center spacing.
H. SAM-e STEAM TUBE SELECTION
(1) Constructed of 1.5" (3.81 cm) OD 304 stainless steel tubing, the steam tubes can
accommodate duct heights between 18" (45.72 cm) - 144" (365.76 cm) for in-duct
header mounting. For smaller duct applications, a mini SAM-e can accommodate sizes
starting at 12" (30.5 cm) wide x 8" (20.3 cm) high. (See Figure 20.) Each steam tube
has a different amount of stainless steel nozzles to evenly disperse steam into the duct
or air handling unit. The nozzles take the steam from the center of the tube, eliminating
any need for jacket heating, and a temperature switch. All the accumulating
condensate is drained vertically down to the main header, and then out the condensate
drain. NORTEC’s unique ‘slip in’ installation method makes for a very quick and
effortless assembly. (See Figure 24.)
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(2) There is a selection of four types of
steam tubes. Each are capable of
distributing different capacities. To
select the steam tube for your
application refer to Table 17.
Type A
Type B
15 lbs/hr (7 kg/hr)
35 lbs/hr (16 kg/hr)
Type B+ 55 lbs/hr (25 kg/hr)
Type C 75 lbs/hr (34 kg/hr)
(3) The humidifiers maximum capacity
and SAM-e header will determine
the steam tube type required. The
selected header will determine
how many steam tubes are
required, refer to Tables 18, 19, 20
and 21. Remember to calculate
your condensate losses.
Figure 23. SAM-e Header
Figure 24. SAM-e Tubes
Figure 25. Steam Inlet
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I. SAM-e STEAM INLET CONFIGURATION SELECTION
(1) Atmospheric Steam (NH, GS, SE)
(a) The steam inlet, Figure 25, is determined by the selected humidifier. Refer to
submittals, Chapter 10-30 to determine the size of steam outlet required.
(b) For a typical SAM-e installation, see Figure 26.
J. MINI SAM-e
(1) For the mini SAM-e installation, refer to Tables 18, 19, 20 and 21 for headers, tubes
and inlet configuration.
Table 17. SAM-e Tube Matrix
Outside-
In-duct
*In-Duct
Height
in. (cm)
TYPE A
TYPE B TYPE B+ TYPE C
‘L’
Duct
Optional
Mounting
Frame
15 lbs/hr 35 lbs/hr 55 lbs/hr 75 lbs/hr Dimension
Optional Steam Tube Profile
Mounting
Frame
(7 kg/hr) (16 kg/hr) (25 kg/hr) (34 kg/hr)
in. (cm)
18 (45.7)
24 (61.0)
1503388
N/A
N/A
N/A
N/A
N/A
N/A
5.5 (14.0)
11.5 (29.2)
17.5 (44.5)
1504697
1504697
1503469
1503389 1503411
1503469
30 (76.2)
1503390 1503412 1509391
36 (91.4)
1503391 1503413 1509392 1503440 23.5 (59.7)
1503392 1503414 1509393 1503441 29.5 (74.9)
1503393 1503415 1509394 1503442 35.5 (90.2)
1503394 1503416 1509395 1503443 41.5 (105.4)
1503395 1503417 1509396 1503444 47.5 (120.7)
1503396 1503418 1509397 1503445 53.5 (136.9)
1503397 1503419 1509398 1503446 59.5 (151.1)
1503398 1503420 1509399 1503447 65.5 (166.4)
42 (106.7)
48 (121.9)
54 (137.2)
60 (152.4)
66 (167.6)
72 (182.9)
78 (198.1)
84 (213.4)
90 (228.6)
96 (243.8)
1503470
1503470
1503471
1503399 1503421 1509400 1503448 71.5 (181.5) 1503471
1503400 1503422 1509401 1503449 77.5 (196.9)
1503401 1503423 1509402 1503450 83.5 (212.1)
102 (259.1) 1503402 1503424 1509403 1503451 89.5 (227.3)
108 (274.3) 1503403 1503425 1509404 1503452 95.5 (242.6)
114 (289.6) 1503404 1503426 1509405 1503453 101.5 (257.8)
120 (304.8) 1503405 1503427 1509406 1503454 107.5 (273.1)
126 (320.0) 1503406 1503428 1509407 1503455 113.5 (288.3) 1503472
132 (335.3) 1503407 1503429 1509408 1503456 119.5 (303.5)
138 (350.5) 1503408 1503430 1509409 1503457 125.5 (318.8)
144 (365.8) 1503409 1503431 1509410 1503458 131.5 (334.0)
NOTE: *Add 6" (15.2 cm) to In-Duct Height for Outside-Duct Mounting of Header.
1503472
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Table 18. Mini SAM-e Headers – 3"
Maximum Capacity Atmospheric lbs/hr (kg/hr)
Duct Width
in. (cm)
Header
Part Number
Steam Tubes Qty
MA
MB
MC
12 (30.5)
18 (45.7)
24 (60.9)
3
5
7
1509811
1509812
1509813
30 (14)
50 (23)
70 (32)
60 (27)
100 (45)
140 (64)
90 (41)
150 (68)
210 (95)
Table 19. Mini SAM-e Headers – 6"
Maximum Capacity Atmospheric lbs/hr (kg/hr)
Duct Width
in. (cm)
Header
Part Number
Steam Tubes Qty
MA
MB
MC
12 (30.5)
18 (45.7)
24 (60.9)
2
3
4
1509814
1509832
1509833
20 (9)
30 (14)
40 (18)
40 (18)
60 (27)
80 (36)
60 (27)
90 (41)
120 (54)
Table 20. Mini SAM-e Tubes
In-duct
*In-Duct
Height
in. (cm)
TYPE MA
10 lbs/hr
(25 kg/hr)
TYPE MB
20 lbs/hr
(9 kg/hr)
TYPE MC
30 lbs/hr
(14 kg/hr)
Optional
Mounting
Frame
‘L’ Dimension
in. (cm)
Steam Tube Profile
8 (20.3)
1509788
1509789
1509790
1509791
1509792
1509793
1509794
1509795
1509796
N/A
N/A
4½" (11.4)
6½" (16.5)
8½" (21.6)
10½" (26.7)
12½" (31.8)
14½" (36.8)
16½" (41.9)
18½" (47.0)
20½" (52.1)
10 (25.4)
12 (30.5)
14 (36.6)
16 (40.6)
18 (45.7)
20 (50.8)
22 (55.9)
24 (60.0)
N/A
N/A
1509797
1509798
1509799
1509800
1509801
1509802
1509803
1509804
1509805
1509806
1509807
1509808
1509809
1509810
Not Required
Table 21. Mini Inlet Configurations – For Atmospheric Steam Unit
SAM-e Steam Inlet
f" OD
Part Number
1509839
1¾" OD
1509837
2 X 1¾" OD
1509838
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Figure 26. Typical SAM-e Installation for Atmospheric Steam Applications
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6. BLOWER PACKS (BOBP, RMBP)
WARNING
STEAM DISTRIBUTOR ON THE BUILT-ON AND REMOTE BLOWER
PACKS HAVE A HOT SURFACE THAT COULD RESULT IN BURNS IF
TOUCHED. NORTEC RECOMMENDS MOUNTING AT LEAST 8 FEET
ABOVE THE FLOOR.
A. BLOWER PACKS
(1) Optional blower packs are used to distribute steam to localized areas such as computer
rooms or in areas that do not have a built-in air distribution system.
(2) Blower packs are available integrally mounted on humidifier BOBP, (See Figure 27.) or
detached and field-piped and wired to humidifier RMBP. (See Figure 28.)
(3) Blower packs consist of a matching powder coated steel cabinet containing: three axial
blowers with finger guards powered by 120 VAC or line voltage humidifiers, with built-in
multi-tap transformer (when necessary), fuse, high temperature plastic distributor with
stainless steel lid, horizontal and vertical adjustment knobs for directional control, built-
in thermostat to activate blowers, speed control rocker switch and safety loop relay.
(4) Refer to Table 22 for ceiling and frontal clearances required for blower packs.
Dimensions apply to both built-on and remote-mounted versions of blower packs.
(5) Mount remote blower pack(s) using factory supplied wall mounting bracket with
clearances as recommended in Table 22.
Figure 27. NH Series Humidifier With
Built-On Blower Pack
Figure 28. NH Series Remote Mounted
Blower Pack
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Table 22. Ceiling and Frontal Clearances for Blower Packs
Minimum Number Of
Blower Packs
Minimum Ceiling Clearance
in. (cm)
Minimum Front Clearance
in. (cm)
NH Series Model
005
010
020
030
050
075
100
150
200
1
1
18 (45)
18 (45)
18(45)
30 (76)
30 (76)
1
36 (91)
1
18 (45)
36 (91)
42 (106)
48 (122)
42 (106)
48 (122)
72 (183)
84 (213)
144 (366)
156 (396)
144 (396)
156 (396)
1
1
1
2*
2*
NOTES: 1. Remote mounted only. Four remote mounted blower packs are recommended on the 200 model.
2. Clearances based on 72°F at 35% RH.
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7. CONTROLS
A. GENERAL
(1) NORTEC humidifiers all accept on/off controls for their security loop. Many NORTEC
humidifiers can also accept modulating or transducer signals for control (See the
features section for each specific model).
CAUTION
REGARDLESS OF SELECTING ON/OFF OR MODULATING CONTROL
METHOD, NORTEC HUMIDIFIERS MUST HAVE CLOSED CIRCUIT
ACROSS ITS ON/OFF SECURITY LOOP CONTROL TERMINAL TO
OPERATE. NORTEC HIGHLY RECOMMENDS THE USE OF A HIGH
LIMIT HUMIDISTAT AND AN AIR PROVING SWITCH IN SERIES FOR
THIS FUNCTION.
B. ON/OFF CONTROLS
(1) On/Off controls are used in all NORTEC humidifier security loops. The digital
humidistat can also be used as a space humidity controller. These controls include:
(a) Air Proving Switch – duct mounted, pressure differential switch, adjustable set
point from 0.07 IWC to 12.0 IWC, good for positive, negative or differential
pressure applications, stops humidifier if duct air pressure is not sensed. Turns
humidifier off if air handler fails.
(b) Duct Mounted Digital Humidistat – control or high limit, adjustable set point from
15-90% rh with accuracy fixed at ±3% at 25°C, operating range of 0-95% rh, closes
on humidity drop for control and opens on rise for high limit duct application.
(c) Wall Mounted Digital Humidistat – control or high limit, adjustable set point from
15-90% rh with accuracy fixed at ±3% at 25°C, operating range of 0-95% rh, closes
on humidity drop for control and opens on rise for high limit application.
(d) On/Off Controls Supplied by Others – Can be used as long as they have a dry set
of contacts capable of passing a 24-VAC, 2-A maximum signal.
C. MODULATING CONTROLS
(1) Modulating Controls are used to send a modulating demand signal to the NORTEC
humidifier. Different models can accept different signals (see features section for each
specific model) NORTEC supplied controllers send a 0-10 VDC demand signal. This
signal can be used as a control and in some models can also be used as a modulating
high limit. These controls include:
(a) Wall Mounted Digital Humidistat with Integrated Sensor – control or high limit,
adjustable set point from 15-90% rh with accuracy fixed at ±3% at 25°C, outputs a
0-10 VDC signal.
(b) Wall Mounted Digital Humidistat Without Sensor – control or high limit, adjustable
set point from 15-90% rh with accuracy fixed at ±3% at 25°C, outputs a 0-10 VDC
signal. Requires a remote transducer sensor supplying a 2-10 VDC signal.
(c) Duct Mounted Digital Humidistat With Sensor – This package comes with both a
remote sensor and a wall mounted controller without sensor. Control or high limit,
adjustable set point from 15-90% rh with accuracy fixed at ±3% at 25°C, outputs a
0-10 VDC signal.
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(d) Modulating Demand Signal Supplied by Others – A signal that is a linear demand
signal that rises on need for humidity can be used in conjunction with NORTEC
humidifiers. See features section for a list of which models can accept which
signal)
D. OUTDOOR TEMPERATURE SETBACK
(1) The outdoor temperature setback sensor is used to prevent condensation on windows
or other surfaces that are adjacent to outdoor air. This sensor can be used in
conjunction with the NORTEC controls mentioned above (both the on/off and
modulating demand signal controllers) The sensor allows the controller to override the
set point to prevent the humidifier from humidifying when condensation could be
possible. (See Figure 29.) Locate the temperature sensor near the fresh air intake. This
will ensure accurate representation of the outdoor air temperature.
E. TRANSDUCER SENSORS
(1) Transducer Sensors are signals sent back to either a controller or back to the
humidifier. Limited models can accept a direct transducer signal. (See features section
for each specific model) The sensors include:
(a) Wall Mounted Humidity Transducer – Sensor, output of 2-10 VDC, range of 0 to
95% rh.
(b) Duct Mounted Humidity Transducer – Sensor, output of 2-10 VDC, range of 0 to
95% rh.
(c) Transducer Sensor By Others – Humidity sensors that rise linearly with the sensed
rh in the room.
Figure 29. Set Point Versus Outdoor Temperature
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F. POSITIONING CONTROLS AND SENSORS
(1) When positioning controls and sensors, ensure other factors do not influence these
devices and give incorrect inputs to the unit. Some of these influences are:
(a) The wall humidistat should not be installed on an outside wall or hot or cold
surface.
(b) The sensor should be installed away from any heat source and away from direct
sunlight and away from any water vapor producing source.
(c) The wall surface should be flat and clean.
(d) Any draft originating from the wall interior should be prevented from interacting
with the humidity sensor. A vapor barrier should be installed.
(e) Location of sensor must be representative of space humidity therefore avoid
drafts, temperature variation or overhangs that may prevent the sensor from
sensing an accurate representation of the space humidity.
(f) Duct sensors should be placed in a location that assures any and all absorption
has been accomplished.
G. NORTEC ONLINE
(1) NORTEC OnLine enables secure, internet based monitoring, simplifies interoperability
and automated email service notification. Using standard Internet Explorer, version 6.0
or newer, NORTEC OnLine provides both monitoring and control, from any location
with Internet access, for a period of one year. (See Figure 30.) During the service
period, NORTEC OnLine will also generate automatic e-mails when scheduled service
is required and/or abnormal operation occurs. Up to three customer(s) e-mail
addresses may be added to the automatic notification feature, to provide instant
notification.
(2) NORTEC OnLine factory technicians will remotely view each humidifier weekly and
record key status information, which will be used for an annual report to the key
customer contact. This contact will also receive notification of corrections, or service
recommendations from the NORTEC OnLine technician responding to automated
e-mail notifications.
(3) The factory-installed NORTEC OnLine controller is located internally to the humidifier.
(4) Key features of NORTEC Online include:
(a) Graphical representation of humidifier performance
(b) Enable/disable humidifier
(c) Adjust %rh set point(s), if equipped
(d) Adjust manual Limited Capacity
(e) Automated e-mail advisories for scheduled service or abnormal conditions
(f) Up to fifty incidents, of factory direct support and follow-up
(g) First year of remote access includes factory direct monitoring
(h) Weekly checks by NORTEC OnLine factory technicians
(i) Remote factory diagnostics and programming capability
(j) Individual account access to www.norteconline.com.
(k) Monitor up to seventy parameters from each humidifier
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Figure 30. NORTEC OnLine Monitoring
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(l) Access to service history
(m) Option to add up to seven slave humidifiers to each NORTEC OnLine module
(n) Monitor up to eight humidifiers (one master, seven slaves) with one Internet
connection
(o) Up to three years of coverage can be purchased at time of order
(p) Secure 128-bit Internet connectivity (SSL)
(5) Different networking configurations may be achieved and are mostly dependant on the
type of network present at the site. Specify at the time of order using the form in
Figure 31. Connection options include:
(a) Static IP connection
(b) DHCP (dynamic IP)
(c) GPRS connection
(d) Dial-up modem connection.
H. NORTEC LINKS
(1) Provides a network connection to a BMS system using one of the following protocols:
(a) BACnet IP
(b) BACnet MSTP
(c) LonWorks
(d) Modbus (Standard on the NHTC and NHTC Outdoor)
(e) Johnson N2.
(2) NORTEC Links provides monitoring and control allowing humidifier(s) to communicate
to your Building Management System (BMS). The controller is factory installed and is
located internally to the humidifier. NORTEC Links can be integrated with NHTC,
NHSC/DI, GSTC/SETC technologies. Simply specify at time of order, using the form in
Figure 32, what operating protocol you are using BACnet IP, BACnet MSTP,
LonWorks, Modbus or Johnson N2.
(3) Some features of NORTEC links are:
(a) Digital feedback for unit standby/humidifying mode.
(b) Digital feedback for service required.
(c) Digital feedback for fault indication.
(d) System demand display.
(e) Control enable/disable.
(4) Combined with direct sensor connection to either the humidifiers or BMS it is also
capable of:
(a) Control room set point
(b) Control high limit set point
(c) Control room %rh
(d) Control high limit %rh.
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I. TYPICAL INSTALLATION LAYOUT FOR NHTC/NHPC
(1) The following are examples of typical control installation possibilities. There are many
more configurations possible, be sure to consider the application and positioning as a
priority. Figures 33, 34, 35, and 36 show typical control installation.
J. NORTEC CONTROLLER DIMENSIONS
(1) See dimensions in Chapter 10-30.
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NORTEC ONLINE CONFIGURATION FORM
Please complete the information below.
Attention:
Company:
From:
Date:
Fax #:
Page:
of
Subject:
NORTEC Online Information
G FOR YOUR INFORMATION
G RESPONSE REQUESTED
Agent P.O. Number: ____________________
Sales Order Number: ____________________
Desired NORTEC Online Connection Type:
‰ Static IP connection
‰ DHCP (dynamic IP)
‰ GPRS connection
‰ Dial-up modem connection
Settings for Static IP Connection:
Module IP Address:
Subnet Mask:
____________________
____________________
Default Gateway Address: ____________________
Primary DNS:
Secondary DNS:
____________________
____________________
Setting for GPRS Connection:
Settings for Dial-up Modem Connection:
User Name:
____________________ User Name:
____________________
Password/PIN Code: ____________________ Password:
____________________
APN String:
Connection String: ____________________
____________________ Phone Number to dial: ____________________
Be sure to include complete dial-up number string such as area code if
necessary.
Humidifier Ordering
Email Addresses for Event Notification:
Email Contact 1: ____________________
Email Contact 2: ____________________
Email Contact 3: ____________________
Humidifier
Model/Size
Unit
Designation
Desired Unit
Order
Lead Humidifier
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
End User Information
Time Zone:
Company Name:
Address:
____________________
____________________
____________________
____________________
____________________
____________________
Phone Number:
Main Contact Person: ____________________
Figure 31. NORTEC Online Configuration Form
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NORTEC LINKS FORM
Please complete the information below.
Attention:
Company:
From:
Date:
Fax #:
Page:
of
Subject:
NORTEC Links Information
G FOR YOUR INFORMATION
G RESPONSE REQUESTED
MESSAGE
Agent P.O. Number: ____________________
Sales Order Number: ____________________
Desired NORTEC Links Option:
‰ BACnet/IP
Settings for BACnet/IP only:
Default Gateway Address: ____________________
Network Number:
Subnet Mask:
Module IP Address:
____________________
____________________
____________________
‰ BACnet/MSTP
‰ Johnson N2
‰ LonWorks
Humidifier Ordering:
Humidifier
Model/Size
Desired Unit Order
Lead Humidifier
Unit 1
Unit 2
Unit 3
Unit 4
Unit 5
Unit 6
Unit 7
Unit 8
Unit 9
Unit 10
Unit 11
Unit 12
Unit 13
For all GS/SE humidifiers equipped with
NORTEC Links and NH units with BACNET/IP.
Figure 32. NORTEC Links Form
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Figure 33. Humidifier Controlled by Air Proving, On/Off Duct Mounted High Limit and
Modulating Wall Mounted Space Controller
Figure 34. Humidifier Controlled by Air Proving, Modulating Duct Mounted High Limit and
Modulating Wall Mounted Space Controller
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Figure 35. Humidifier Controlled by Air Proving, Modulating Duct Mounted High Limit and
Modulating Wall Mounted Return Air Sensor with Wall Mounted Controller
Figure 36. Humidifier Controlled by Air Proving, Duct Mounted High Limit Sensor and
Modulating Duct Mounted Return Air Sensor with Networking Option
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10-20
SPECIFICATIONS
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SPECIFICATIONS
1. HUMIDIFIERS
A. GENERAL
(1) Work Included
(a) NORTEC NH Series electrode steam humidifier(s) as indicated on drawing(s) and
as indicated on schedule(s).
(b) Complete and operable humidification system (which meets applicable building
codes).
(c) Equipment start-up and project inspection by qualified factory trained
representative.
(2) Submittals
(a) Submit product data under provisions of Section 15010. Include product
description, model, dimensions, component sizes, rough-in requirements, service
sizes, and finishes. Include rated capacities, operating weights, furnished
specialties, and accessories.
(b) Include piping details, plans, elevations, sections, details of components, and
dispersion tubes. Submit wiring diagrams including power, signal, and control
wiring.
(3) References
(a) Certifications, C-UL_US Listed.
(b) ISO 9001-2000.
(c) ANSI/NFPA 70 – National Electrical Code.
(d) ARI 640, ‘Standard for Commercial and Industrial Humidifiers’.
(e) ASHRAE SSPC 135 BACnet, ANSI/EIA 709.1 LonTalk.
(4) Warranty
(a) Product shall be warranted to be free from defects in material and workmanship for
a period of two years after installation or 30 months from manufacturers ship date,
whichever date is earlier. If operating with NORTEC web-based service program
warranty is extended to 42 months from ship date.
B. PRODUCTS
(1) Electrode Steam Humidification System – NORTEC Model NHTC
(a) NORTEC NHTC electrode steam generating system using regular type potable
water supply.
(b) Packaged unit, wall mounted, requiring steam distributor(s) or Short Absorption
Manifold(s) for mounting into AHU/duct(s) or Remote/Built-On Mounted Blower
Pack(s) for direct space applications. Refer to Humidifier Dispersion Options in
paragraph B.(4).
(c) Atmospheric pressure steam generation and mineral separation contained within
an electrode steam cylinder(s). Resistive element technology and boiler steam
(pressure steam) technology not acceptable. The disposable electrode steam
cylinder shall have:
1
Published life expectancy.
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2
3
Published replacement pricing.
Cylinder seams must be spin welded to ensure long-term water tightness and
leak resistance.
4
5
6
7
Integral electronics to ensure safe operation.
High water sensor circuitry to prevent over filling.
Efficient operation over a wide range of water conditions.
Simple maintenance without disassembly or removal of humidifier. No
specialized tools required.
8
9
Full output and maximum energy efficiency through entire cylinder life.
‘Drain through bottom’ to ensure highest mineral concentration is effectively
removed. Simple skimmers are not acceptable.
10 Large perforated strainer at drain outlet to prevent blockage of drain valve or
drain lines.
11 Tool-less primary electrical connection for use with factory installed, spring
loaded, gold plated connectors.
12 Safety characteristics ensuring no current flow with absence of water,
independent of safety controls. Resistive element not acceptable.
(d) Unit(s) to be complete with:
1
2
3
‘Total Controller’ microprocessor to control all humidifier functions with
interface capabilities for remote communication technologies, including
Internet or BMS requirements.
Advanced water management utilizing the patented Proportional plus Integral
Autoadaptive control system for optimal energy efficiency, water usage and
cylinder life.
Microprocessor controlled fill valve and drain valve allowing automatic water
management.
4
5
Internal drain water tempering to ensure maximum 140°F (60°C) drain water.
Integral fill cup with minimum 1-inch (25-mm) air gap to prevent back
siphoning.
6
Smart cylinder EPROM for improved operation providing:
a
b
c
d
Cylinder identification with model, data, and capacity.
Cylinder self diagnostics ensuring safe operation.
End of cylinder life status.
Cylinder run time in hours.
7
8
9
Full cylinder indication and pre-notification of automatic shutdown at end of
cylinder life.
Automatic pulse feature to clean any obstruction from the drain solenoid valve
when needed.
Automatic off-season shut-down (after 3 days of ‘no call’) will completely drain
the cylinder(s) and automatically restart on call for humidity. Adjustable on/off
and time sequence. Provides extended cylinder life, while ensuring stagnant
water does not remain in the system.
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10 Accepts a signal from BMS/BAS system or modulating humidistat.
11 Single or dual channel signal acceptance.
12 Isolated plumbing and electrical compartment with cabinet made of 18-gauge
powder coat paint finish and 20 gauge plumbing electrical door. Modular
plumbing and electrical fully assembled and pre-wired (no field assembly
required).
13 Removable door (no special tools required) to allow user full front access of
plumbing and electrical sections.
14 Plumbing door interlock safety switch to allow power interruption when
installing or servicing the humidifier.
15 Standard of acceptance NORTEC NHTC Series.
16 C-UL_US listed.
17 Spec
(2) Humidifier Controls (NHTC and NHTC Outdoor)
(a) Total Controller microprocessor with the following features or functions:
1
Full function user interface with touch type keypad and backlit alphanumeric
graphic display with trend log.
2
3
Real time clock indicating date and time with battery back up.
Built-in controller with adjustable set point, proportional range, and integral for
use with humidity transducers.
4
5
Acceptance of industry standard (analogue continuous control demand
signal [0-5 VDC] [1-5] [0-10 VDC] [0-20 mA] [4-20 mA]) relative humidity
transducers.
Keypad programming to configure, monitor and control humidifier parameters
on graphic backlit display
a
Relative humidity set point and actual conditions in space from humidity
transducer.
b
Relative humidity set point and actual conditions in duct for variable air
volume (VAV) applications from humidity transducer.
c
d
e
f
Relative humidity high limit set point and actual from humidity transducer.
System demand in lbs/hr (kg/hr).
On screen service history with date stamp.
On screen fault history with troubleshooting list and date stamped.
On screen attention indication.
g
h
i
Security loop status open/close.
Control Channel 1 demand %.
j
Control Channel 2 demand %.
k
l
Control mode (single or dual modulation).
Control type (demand or rh proportional, rh proportional + integral).
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m
n
o
p
q
r
Manual capacity output adjustment range of 20-100%.
Humidifier model, capacity, software version.
Cylinder model # and capacity rating.
Humidifier run time weighted hours.
Date and time (year, month, day, hour and minute).
Stand by heating to increase steam production response time.
Rapid modulation capability reduces response time upon start-up.
Short cycling detection and correction diagnostics.
Foam detection and correction capability.
s
t
u
v
w
Scroll through start-up and troubleshooting checklist on graphical display.
Self-diagnostics during start-up to system test to prevent unsafe operation
of the unit(s).
x
User adjustable drain/flush frequency.
HUMIDIFIER CONTROLS NHPC
(b) Proportional Controller microprocessor with following features or functions:
1
2
Graphic function display with user interface with touch type key pad.
Acceptance of industry standard [analogue continuous control demand signal
[0-1Vdc] [1-5Vdc] [0-10 Vdc] [2-10 Vdc] [0-16 Vdc] [0-20 mA]
3
Keypad/Display to monitor and control humidifier parameters.
a
b
c
d
e
System demand in lbs/hr (kg/hr).
Security loop status open/close.
Control Channel 1 demand %.
Manual capacity output adjustment range of 20-100%.
Self-diagnostics during start-up to system test to prevent undase
operation of the Unit[s].
f
Control signal type.
Software version.
g
(c)
1
Internal communications via Modbus RTU protocol provides monitoring and
control allowing humidifier(s) to communicate to Building Management
System (BMS). Supporting a RS485 port with a configuration of 9600bps,
8-bits, no parity, one stop bit shall support the following variables:
a
b
Change Cylinder – Indicates cylinder needs to be replaced (read).
Channel 1 Input – Humidifier input value being supplied to channel 0-
100% (read/write).
c
Channel 1 Set point – Control channel 1 setpoint for relative humidity in
space 0-100% (read/write).
d
Channel 2 Input – Humidifier input value being supplied to channel 0-
100% (read/write).
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e
f
Channel 2 Set point – Control channel 2 setpoint for relative humidity in
space 0-100% (read/write).
System Demand – Indicates humidifier system demand based on input
signal calculations 0-100% (read).
g
Demand/rh_Configuration Parameter – Configures humidifier to accept
demand or %rh signal(s) (read/write).
h
i
Remote fault Indication – System fault indication and alarm status (read).
Network Sensors – Allows network-enabled sensing or control (read/write).
j
Remote Disable – Provides remote humidifier enable/disable system
control. (read/write).
k
l
Remote Service Indication – Provides remote humidifier service
indication (read).
Remote Status Indication – Provides remote humidifier on/standby
system status indication (read).
(3) Remote Monitoring And Control Options (NHTC and NHTC OUTDOOR only)
Reference: Section 15900 - Building Controls and Automation
(a) NORTEC OnLine web based monitoring and control from any location with Internet
access, using standard Internet Explorer, version 6.0 or newer.
(b) NORTEC OnLine remote monitoring hardware using secure <DHCP Ethernet
Connection> or <Static IP Ethernet Connection> or <Dial-up Internet Connection>
or <GPRS wireless Internet Connection> Internet communication protocols.
(c) NORTEC OnLine Monitoring Service (NOMeS) with weekly humidifier examination
by factory direct technicians for first year, renewable/extendable up three
consecutive years.
(d) One additional year (third year), extended humidifier warranty when renewed/
extended for third year of NORTEC OnLine Monitoring Service (NOMeS).
(e) Packaged accessory, factory installed and ready for customer supplied <Ethernet>
or <Modem> communication connection.
(f) Package will include the listed items in either paragraph (f) 1 through 17 or
paragraph (g) 1 through 7:
1
2
3
4
5
6
Internet accessible graphical representation of humidifier performance.
Remotely enable/disable humidifier.
Remotely adjust rh% set point(s), if equipped.
Remotely adjust ‘limited capacity’.
Automated e-mail advisories for scheduled service or abnormal conditions.
Up to three customer e-mail addresses available for automated e-mail
advisories.
7
8
9
Up to 50 incidents, of factory direct support and follow-up per humidifier.
First year of remote access includes factory direct monitoring.
Weekly checks by NORTEC OnLine factory technicians.
10 Remote factory diagnostics and programming capability.
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11 Individual account access to www.norteconline.com.
12 Monitor up to seventy parameters from each humidifier.
13 Access to service history.
14 Option to add up to <seven> or <six NMTC> ‘slave’ humidifiers to each
NORTEC OnLine module.
15 Monitor up to <eight humidifiers (one master, seven slaves)> or <seven
humidifiers (one master, six slaves)> with one <Ethernet> or <Modem>
connection.
16 Up to three years of coverage can be purchased at time of order, extending
humidifier limited warranty to three years.
17 Communication using secure 256-bit Internet connectivity (SSL) and Jabber
protocol.
(g) NORTEC Links remote building management system capability using BACnet
MSTP, BACnet /IP LonTalk, or Johnson N2 networks for monitoring and
controlling. The package will include:
1
2
3
4
5
Variable definitions, addresses, and values.
For complete function capabilities refer to 1.B.(2)(a)6.
Monitor up to 13 humidifiers (one master, 12 slaves) using a single interface.
External Interface File (XIF) for LonWorks integration.
Protocol Implementation Conformance Statement (PICS) for BACnet
integration.
6
7
BACnet Interoperability Building Blocks (BIBBS) for BACnet Services.
User graphic with trending charts, complete with all humidifier details. Refer to
1.B.(2)(a)6.
(4) Humidifier Dispersion Options
(a) Single Tube(s) Steam Dispersion with condensate drain – NORTEC Model(s)
ASD, BSD, CSD
1
Allows for direct introduction of steam into a duct system or air handling unit.
Distributor tube is made of stainless steel and can be installed in a horizontal,
upflow, or downflow duct applications.
2
3
4
Steam inlet connection size is f" (22.2 mm) O.D for ASD, BSD models and
1¾" (44.5 mm) for CSD model.
Rated capacities per single dispersion tube(s) model - ASD up to 25 lbs/hr,
BSD up to 35 lbs/hr and CSD up to 115 lbs/hr.
All single tube(s) distributors have an integral condensate return, allows for
condensate produced at the distributor to be drained through a d" (9.5 mm)
drain leg either back to the humidifier or to a convenient floor drain.
(b) Wall Mounted Direct Steam Dispersion System – NORTEC Model(s) RMBP or
BOBP (for NHTC and NHPC only)
1
Packaged unit, wall mounted allows for direct space/room humidification when
steam introduction into a ducted system is not feasible.
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2
The factory assembled blower pack includes an integral steam distributor,
three tubeaxial (box) fans, fusing, wall mounting bracket, and air proving
safety circuitry.
3
4
Primary and control voltage terminal blocks facilitate field connections
between the humidifier.
Blower pack may be remote mount or built-on the humidifier.
(c) Short Absorption Manifold – NORTEC Model SAM-e
1
Short Absorption Manifold designed for atmospheric steam humidifiers or
pressurized steam from a boiler, to directly inject the steam into ducted air for
humidification.
a
Absorption distance characteristic shall prevent water accumulation on
any induct surfaces beyond ___in. (___mm) downstream of the steam
dispersion panel.
b
Steam dispersion panel consisting of a (one) horizontal stainless steel
header supplying steam to a bank of closely spaced 3" (7.6 cm) or
6" (15.2 cm) or 9" (22.9 cm) or 12" (30.5 cm) vertical tubes, as necessary
to meet absorption distance requirements, and to reduce condensation
losses.
c
Single horizontal stainless steel header to provide steam to vertical
distributor tubes and to reduce condensation losses. Dual header
systems creating unnecessary condensation, or systems needing to be
installed on a partition or requiring blank off plates are not acceptable.
d
e
Header design is primarily round tube to minimize pressure drop. Square
headers are not acceptable.
Steam inlet and condensate return located on the same side and at the
bottom of the header to allow single point entry and floor mounting.
f
Headers and tubes are 304 stainless steel construction.
g
Vertical stainless steel distribution tubes to promote condensate
evacuation. Horizontal distributor tubes are not accepted.
h
i
Distribution tubes shall include threaded standoffs for trouble free
attachment to factory supplied support bracket.
Stainless steel nozzle inserts ensure condensate free steam is
discharged from the center of the distribution tubes. Systems without
nozzle inserts, or other than stainless steel, are not acceptable.
j
Stainless steel nozzle inserts shall have metered orifices, sized to provide
even distribution of the discharged steam, spaced for optimum steam
absorption.
k
l
Nozzles of dissimilar metals are likely to dislodge due to inconsistent
rates of expansion and therefore not accepted.
Adjustable mounting frame available for quick and easy installation.
C. EXECUTION
(1) Examination
(a) Examine ducts, air handling units, and conditions for compliance with requirements
for installation tolerances and other conditions affecting performance.
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(b) Examine roughing-in for piping systems to verify actual locations of piping
connections before humidifier installation.
(c) Proceed with installation only after unsatisfactory conditions have been corrected.
(2) Installation
(a) Install humidifiers and steam dispersion panels per manufacturers’ instructions.
(b) Seal humidifier dispersion-tube duct penetrations with flange.
(c) Install with required clearance for service and maintenance.
(3) Commissioning
(a) System verification testing is part of the commissioning process. Verification
testing shall be performed by the contractor and witnessed and documented by the
commissioning authority. Refer to section 01810, Commissioning, for system
verification tests and commissioning requirements; or
(b) Manufacturer's Field Service: Engage a factory-authorized service representative
to inspect field-assembled components and equipment installation, including
piping and electrical connections. Report results in writing. Responsibilities
include:
1
Leak Test: After installation, charge system and test for leaks. Repair leaks
and retest until no leaks exist.
2
Operational Test: After electrical circuitry has been energized, start units to
confirm proper unit operation. Remove malfunctioning units, replace with new
units, and retest.
3
Test and adjust controls and safeties. Replace damaged and malfunctioning
controls and equipment.
(4) Testing
(a) System testing is accomplished through either of the following methods:
1
System verification testing is part of the commissioning process. Verification
testing shall be performed by the contractor and witnessed and documented
by the commissioning authority. Refer to section 01810, Commissioning, for
system verification tests and commissioning requirements; or
2
Manufacturer’s Field Service: Engage a factory-authorized service
representative to inspect field-assembled components and equipment
installation, including piping and electrical connections. Report results in
writing. Responsibilities include:
a
Leak Test: After installation, charge system and test for leaks. Repair
leaks and retest until no leaks exist.
b
Operational Test: After electrical circuitry has been energized, start units
to confirm proper unit operation. Remove malfunctioning units, replace
with new units, and retest.
c
Test and adjust controls and safeties. Replace damaged and
malfunctioning controls and equipment.
(5) Training
(a) Equipment training can be accomplished in one of the following two ways:
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1
Training of the owner’s operation and maintenance personnel is required in
co-operation with the commissioning authority. Provide competent, factory
authorized personnel to provide instruction to operation and maintenance
personnel concerning the location, operation, and troubleshooting of the
installed systems. The instruction shall be scheduled in coordination with the
commissioning authority after submission and approval of formal training
plans. Refer to System Demonstrations, section 01670, for contractor training
requirements. Refer to section 01810, Commissioning, for further contractor
training requirements; or
2
Engage a factory-authorized service representative to train owner’s
maintenance personnel to adjust, operate, and maintain humidifiers.
a
Train owner’s maintenance personnel on procedures and schedules for
starting and stopping, troubleshooting, servicing, and maintaining
equipment and schedules.
b
c
d
Review data in maintenance manuals. Refer to Division 1 Section
Contract Closeout.
Review data in maintenance manuals. Refer to Division 1 Section
Operation and Maintenance Data.
Schedule training with owner, through architect, with at least seven days
advance notice.
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10-30
SUBMITTALS
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1. SUBMITTAL DESCRIPTIONS
A. INTRODUCTION
(1) The information found in this section is general in nature and consists of part
numbers, product descriptions and options, dimensions, specifications and
equipment features.
B. NH UNIT
(1) The different wiring connections to the humidifier unit can be found in Figure 2. All
wiring is to be in accordance with existing national and local electrical codes.
(2) Performance data for single and double units can be found in Figure 3, Figure 4,
and Figure 5.
(3) NH Series unit options and common accessories universal are found in Tables 1
and 2.
C. DISTRIBUTORS
(1) A description of the accessories for the steam distributor can be found in Table 3.
(2) Dimensions for the steam distributor are found in Figure 6, Figure 7, Figure 8.
D. SAM-e
(1) This section identifies the dimensions for the various configurations and
components that make up a SAM-e installation.
(2) General dimensions for the SAM-e and Mini SAM-e are found in Figures 9 and 10.
(3) For an in-duct/AHU installation without mounting frame refer to Figure 11.
(4) For an in-duct/AHU installation with mounting frame refer to Figure 12.
(5) For an outside duct installation without mounting frame refer to Figure 13.
(6) For an outside duct installation with mounting frame refer to Figure 14.
(7) For a vertical duct installation refer to Figure 15.
(8) For outside duct mounting cover plates refer to Figure 16.
(9) For atmospheric SAM-e adapter dimensions refer to Figure 17.
(10) For atmospheric steam header and adapter configuration refer to Figure 18.
E. BLOWER PACK
(1) Remote Blower Packs
(a) Remote blower packs are powered from the NH humidifier from a primary
voltage terminal block provided and fed from the leaving side of the unit
contactor to operate blower pack in conjunction with unit operation. A matching
terminal block is incorporated in the blower pack. Field wiring is required
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between the NH unit and remote blower pack terminal blocks or can be
powered by a seperate 12 ov supply.
(b) Disk thermostat mounted on the top of steam distributor will start the fan when
steam is generated and will allow to cool down the blower pack when there is
no call for humidity.
(c) A minimum of two (2) 050-100 RMBP’s are required with the NH-150 or NH-
200 units. It is recommended that four (4) RMBP’s be used to reduce the steam
absorption distances.
(d) It is recommended that a minimum of two (2) remote blower packs be used on
NH 075-100 units to reduce the steam absorption distances.
(e) For recommended ceiling and frontal clearances, see Chapter 10-10.
(f) For blower pack dimensions refer to Figure 19, Figure 20, Figure 21.
(2) Built-On Blower Pack (NHTC and NHPC only)
(a) Built-on blower packs are factory mounted and wired to operate in conjunction
with the humidifier. Factory installed and wired manual reset thermostat will not
allow humidifier operation if blower pack becomes overheated.
(b) Built-on blower packs are not available on NH 150-200. Remote blower packs
can be used with these units, multiple blower packs are required on NH 150-
200.
(c) Built-ON Blower Pack, Wall Mounted Direct Steam Distribution System. Allows
for direct space/room humidification when steam introduction into a ducted
system is not feasible. The factory assembled Built-On Blower Pack includes
an integral steam distributor, three direct drive fans for quiet operation, fan
adjustable louvers for installation flexibility, fusing and safety circuitry with fan
airflow rate at a total of 330 cfm.
(d) It is recommended that a minimum of two (2) remote blower packs be used on
NH 075-100 units to reduce the steam absorption distances.
(e) For recommended ceiling and frontal clearances, see Chapter 10-10. Note
minimum frontal clearance is 36" (91 cm).
(f) For blower pack dimensions refer to Figure 19, Figure 20, and Figure 21.
F. CONTROLS
(1) NHTC/NHPC humidifiers can be easily modified to accept a control signal from a
modulating humidity controller as supplied by others. Controller must have a built-
in adjustable %rh set point. Signal from controller must increase with a drop in
sensed %rh below set point. Humidifier will respond by controlling unit output
between 0% and 100% of rated capacity to match changes in load requirements.
(2) Double circuit humidifiers (NH 150-200) will require two external controllers by
others to enable each circuit to operate independently of the other. Alternatively,
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coupled circuits can be specified. Coupled circuits will enable the two circuits to be
operated from one controller without compromising the safety features of the
humidifier (order Part No.146-9000).
(3) The humidifier shall be controlled directly using a humidity sensor (transducer)
supplied by others. The sensor will be field wired to the humidifier for a direct
control at the humidifier. The same sensor(s) can be shared in parallel to a Building
Automation System for monitoring purposes. Allows keypad setpoint of rh and
display of actual sensed rh on the NHTC’s graphical display.
(4) Double circuit humidifiers (NHTC 150-200) will require two external sensors by
others to enable each circuit to operate independently of the other. Alternatively,
coupled circuits can be specified. Coupled circuits will enable the two circuits to be
operated from one sensor without compromising the safety features of the NHTC
humidifier (order Part No.146-9000).
(5) All controls are available from the factory as options. If controls were not ordered
with the humidifier, they may be purchased/supplied by others. The following
information is relevant to all controls, factory supplied or otherwise.
(6) A, B and C are to be wired in series (only one path for current) across terminals 1
and 2 on the low voltage control terminal strip, or replaced with a jumper wire for
constant operation.
(a) The Control On/Off Humidistat is wired to make on drop in humidity, break on
rise. Set to desired %rh.
(b) The High Limit On/Off Humidistat is wired to make on drop in humidity, break
on rise. Set to a higher set point (max. 85%rh) as a safety to prevent
saturation.
(c) The Air Proving On/Off Switch is wired to make when sensing air flow, break
when no air flow. As a safety to prevent saturation when no air flow.
(7) The factory offers various versions of A, B and C to suit each application. In
general, A is essential, whereas B and C are highly recommended.
(8) Field wiring from humidistat to humidifier and between devices should be 18 AWG
or heavier.
(9) The low voltage control terminal strip is provided in the electrical compartment. The
internal side is factory wired. The external side is to be field wired, unless the
external controls have been cabinet mounted at the factory.
(10) Each unit is supplied with a wiring diagram adhered to the inside face of the
cabinet door.
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Figure 1. Low Voltage Control Terminal Strip
(11)
(12)
A and B: Mount any wall humidistat (control or high limit) over a standard electrical box
at a height similar to a typical thermostat. Any wall humidistat should be in a location
representative of the overall space being humidified and not in the path of a blower pack
or an air supply grille.
A: Mount any duct control humidistat in a location representative of the 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 air is over-humidified or approaching saturation.
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Figure 2. Primary (Line) Voltage Wiring to Unit
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Figure 3. Physical Data – NHTC/NHPC 005-030
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Figure 4. Physical Data – NHTC/NHPC 050-100
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Figure 5. Physical Data – NHTC/NHPC 150-200
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Unit Model
NH 005-020
NH 030
NH 045-100 NH 135-200
Distributor Model
No. of Cylinders
ASD
1
BSD
1
CSD
1
CSD
2
No. of Outlets/Cylinder
OD of Cylinder Outlet (NHTC,P,B)
OD of Cylinder Outlet (NHSC/DI)
1
f"
1¾"
1
f"
1¾"
1
f"
1¾"
2
1¾"
1¾"
Dimensions – in.(mm)
B
Minimum Duct
Length –
in. (mm)
D
Distributor
Model
A
L
ASD 12
ASD18
ASD 24
ASD 30
ASD 36
ASD 42
ASD 48
ASD 54
ASD 60
ASD 66
2 (51)
2 (51)
1.75 (44)
1.75 (44)
1.75 (44)
1.75 (44)
1.75 (44)
2 (51)
2 (51)
2 (51)
2.5 (64)
2.5 (64)
10 (254)
16 (406)
20 (508)
26 (660)
32 (813)
38 (965)
44 (1118)
50 (1270)
56 (1422)
62 (1575)
12 (305)
18 (457)
24 (609)
30 (762)
36 (914)
42 (1066)
48 (1219)
54 (1371)
60 (1524)
66 (1676)
2.25 (57)
2.25 (57)
2.25 (57)
2.5 (64)
2.5 (64)
2.5 (64)
3 (76)
3 (76)
Figure 6. Distributor Dimensions (Sheet 1 of 3)
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Distributor
Model
Dimensions – in (mm)
B
Minimum Duct
Length – in. (mm)
12 (305)
A
2 (51)
2 (51)
2.25 (57)
2.25 (57)
2.25 (57)
2.5 (64)
2.5 (64)
2.5 (64)
3 (76)
C
BSD 12
BSD 18
BSD 24
BSD 30
BSD 36
BSD 42
BSD 48
BSD 54
BSD 60
BSD 66
BSD 72
BSD 78
BSD 84
BSD 90
BSD 96
BSD 102
1.75 (44)
1.75 (44)
1.75 (44)
1.75 (44)
1.75 (44)
2 (51)
10 (254)
16 (406)
20 (508)
26 (660)
32 (813)
38 (965)
44 (1118)
50 (1270)
56 (1422)
62 (1575)
68 (1727)
47 (1880)
80 (2032)
86 (2184)
92 (2337)
98 (2489)
18 (457)
24 (609)
30 (762)
36 (914)
42 (1066)
48 (1219)
54 (1371)
60 (1524)
66 (1676)
72 (1828)
78 (1981)
84 (2133)
90 (2286)
96 (2438)
102 (2590)
2 (51)
2 (51)
2.5 (64)
2.5 (64)
2.5 (64)
3.5 (89)
3.5 (89)
3.5 (89)
3.5 (89)
3.5 (89)
3 (76)
3 (76)
4 (102)
4 (102)
4 (102)
4 (102)
4 (102)
NOTES:
1. ASD Maximum rated output 25 lbs/hr (11.4 kg/hr).
2. BSD Maximum rated output 35 lbs/hr (15.9 kg/hr).
3. CSD Maximum rated output 115 lbs/hr (52.3 kg/hr).
4. Steam Distributors tube made of stainless steel.
5. Steam inlet and end cap made of fine rated plastic.
6. Distributor is adjustable for horizontal or downflow application.
Figure 7. Distributor Dimensions (Sheet 2 of 3)
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Distributor
Model
Dimensions – in (mm)
B
Minimum Duct
Length – in. (mm)
24 (305)
A
C
CSD 24
CSD 30
CSD 36
CSD 42
CSD 48
CSD 54
CSD 60
CSD 66
CSD 72
CSD 78
CSD 84
CSD 90
CSD 96
CSD 102
CSD 108
CSD 114
CSD 120
CSD 126
CSD 132
CSD 138
CSD 144
1.75 (44)
2 (51)
2 (51)
2.25 (57)
2.25 (57)
2.25 (57)
2.5 (64)
2.5 (64)
2.5 (64)
3 (76)
1.55 (39)
2 (51)
2 (51)
2 (51)
2 (51)
20 (508)
26 (406)
32 (508)
38 (660)
44 (813)
50 (965)
30 (457)
36 (609)
42 (762)
48 (914)
2 (51)
54(1066)
2.5 (64)
2.5 (64)
2.5 (64)
2.5 (64)
2.5 (64)
3 (76)
3 (76)
3 (76)
3 (76)
4.5 (114)
4.5 (114)
4.5 (114)
5.5 (140)
5.5 (140)
5.5 (140)
56 (1118)
62 (1270)
68 (1422)
74 (1575)
80 (1727)
86 (1880)
92 (2032)
98 (2184)
104 (2337)
110 (2489)
116 (2945)
122 (3097)
128 (3249)
134 (3401)
140 (3553)
60 (1219)
66 (1371)
72 (1524)
78 (1676)
84 (1828)
90 (1981)
96 (2133)
102 (2286)
108 (2438)
114 (2590)
120 (3046)
126 (3198)
132 (3350)
138 (3502)
144 (3654)
3 (76)
4 (102)
4 (102)
4 (102)
4 (102)
5 (127)
5 (127)
5 (127)
6 (152)
6 (152)
6 (152)
Figure 8. Distributor Dimensions (Sheet 3 of 3)
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Duct Width
in cm
A
B
C
Duct Height
in cm
D (Tube Height)
E min.
E max.
in
cm
33.3
48.6
63.8
79.1
94.3
in
cm
37.8
53.0
68.3
83.5
98.7
in
cm
41.3
56.5
71.8
in
6.25
cm
15.9
in
cm
in
24.604
30.604
36.604
42.604
48.604
54.604
60.604
66.604
72.604
78.604
84.604
90.604
96.604
102.604
108.604
114.604
120.604
126.604
132.604
138.604
144.604
150.604
cm
62.5
77.7
18
45.7
13 1/8
19 1/8
25 1/8
31 1/8
37 1T/8
43 1/8
49 1/8
55 1/8
61 1/8
67 1/8
73 1/8
79 1/8
85 1/8
91 1/8
97 1/8
103 1/8
109 1/8
115 1/8
121 1/8
127 1/8
133 1/8
139 1/8
14 7/8
20 7/8
26 7/8
32 7/8
38 7/8
44 7/8
50 7/8
56 7/8
62 7/8
68 7/8
74 7/8
80 7/8
86 7/8
92 7/8
98 7/8
104 7/8
110 7/8
116 7/8
122 7/8
128 7/8
134 7/8
140 7/8
16 1/4
22 1/4
28 1/4
34 1/4
40 1/4
46 1/4
52 1/4
58 1/4
64 1/4
70 1/4
76 1/4
82 1/4
88 1/4
94 1/4
100 1/4
106 1/4
112 1/4
118 1/4
124 1/4
130 1/4
136 1/4
142 1/4
18
45.7
17.063
23.063
29.063
35.063
41.063
47.063
53.063
59.063
65.063
71.063
77.063
83.063
89.063
95.063
101.063
107.063
113.063
119.063
125.063
131.063
137.063
143.063
43.3
58.6
73.8
89.1
24
61.0
24
61.0
12.25
18.25
24.25
30.25
36.25
42.25
48.25
54.25
60.25
66.25
72.25
78.25
84.25
90.25
96.25
102.25
108.25
114.25
120.25
126.25
132.25
31.1
46.4
61.6
76.8
30
76.2
30
76.2
93.0
36
91.4
87.0
36
91.4
108.2
123.5
138.7
153.9
169.2
184.4
199.7
214.9
230.1
245.4
260.6
275.9
291.1
306.3
321.6
336.8
352.1
367.3
382.5
42
48
54
60
66
72
78
84
106.7
121.9
137.2
152.4
167.6
182.9
198.1
213.4
228.6
243.8
259.1
274.3
289.6
304.8
320.0
335.3
350.5
365.8
102.2
117.5
132.7
148.0
163.2
178.4
193.7
208.9
224.2
239.4
254.6
269.9
285.1
300.4
315.6
330.8
346.1
361.3
42
48
54
60
66
72
78
84
106.7
121.9
137.2
152.4
167.6
182.9
198.1
213.4
228.6
243.8
259.1
274.3
289.6
304.8
320.0
335.3
350.5
365.8
104.3
119.5
134.8
150.0
165.3
180.5
195.7
211.0
226.2
241.5
256.7
271.9
287.2
302.4
317.7
332.9
348.1
363.4
109.5
124.8
140.0
155.3
170.5
185.7
201.0
216.2
231.5
246.7
261.9
277.2
292.4
307.7
322.9
338.1
353.4
114.0
129.2
144.5
159.7
174.9
190.2
205.4
220.7
235.9
251.1
266.4
281.6
296.9
312.1
327.3
342.6
357.8
92.1
107.3
122.6
137.8
153.0
168.3
183.5
198.8
214.0
229.2
244.5
259.7
275.0
290.2
305.4
320.7
335.9
90
96
90
96
102
108
114
120
126
132
138
144
102
108
114
120
126
132
138
144
Figure 9. SAM-e General Dimensions
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Duct Width
A
Duct Height
B
C
in
12
18
24
cm
in
cm
in
8
cm
in
7 7/8
9 7/8
11 7/8
13 7/8
15 7/8
17 7/8
19 7/8
21 7/8
23 7/8
cm
in
cm
30.5
45.7
61.0
11 1/16
17 1/16
23 1/16
28.1
43.3
58.6
20.3
25.4
30.5
35.6
40.6
45.7
50.8
55.9
61.0
20.0
25.1
30.2
35.2
40.3
45.4
50.5
55.6
60.6
4 7/16
6 7/16
8 7/16
10 7/16
12 7/16
14 7/16
16 7/16
18 7/16
20 7/16
11.3
16.4
21.4
26.5
31.6
36.7
41.8
46.8
51.9
10
12
14
16
18
20
22
24
Figure 10. General Mini SAM-e Dimensions
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Figure 11. In-Duct / AHU Installation Without Mounting Frame Installation
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Figure 12. In-Duct / AHU Installation With Mounting Frame Installation
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Figure 13. Outside Duct Installation Without Mounting Frame Installation
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Figure 13. In-Duct / AHU Installation With Mounting Frame Installation
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Figure 14. Vertical Duct Installation
Figure 15. Outside Duct Mounting Cover Plates
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Figure 16. Atmospheric SAM-e Adapter Dimensions
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Figure 17. Atmospheric Steam Header and Adapter Configuration
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Figure 18. Physical Data for Remote Mounted Blower Pack
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Figure 19. Physical Data Units with Optional Built-On Blower Packs
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Figure 20. Physical Data Units with Optional Built-On Blower Packs
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Wall Digital Humidistat Dimensions
A
B
C
D
E
F
in.
4.4
cm
12.2
in.
2.9
cm
7.2
in.
1.2
cm
3.0
in.
0.6
cm
1.6
in.
1.7
cm
4.3
in.
1.7
cm
4.3
Figure 21. Wall Digital Humidistat
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Duct Sensor Dimensions
A
B
C
D
E
F
in.
3.5
cm
8.9
in.
7.9
cm
20.0
in.
1.7
cm
4.2
in.
4.4
cm
11.2
in.
3.9
cm
9.6
in.
3.5
cm
8.9
Figure 22. Duct Sensor
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2. SUBMITTALS
A. INTRODUCTION
(1) The following pages are intended to be used by the engineer to determine the
component quantities required.
B. INSTALLATION COMPONENT SELECTION
(1) The following Tables 1 through 15 will enable the engineer to select components for
this installation.
Table 1. NH Series Unit Options
Part No.
2522160
2522162
Description
Qty
FILLCUP EXTENSION KIT NHTC/NHPC - 2 Required for 150 or 200
DRAIN WATER COOLER
005-020, to temper drain water below 120°F (49°C)
2522163
2522164
2522165
2522166
2522167
DRAIN WATER COOLER
030, to temper drain water below 120°F (49°C)
DRAIN WATER COOLER
050-075, to temper drain water below 120°F (49°C)
DRAIN WATER COOLER
100, to temper drain water below 120°F (49°C)
DRAIN WATER COOLER
150, to temper drain water below 120°F (49°C)
DRAIN WATER COOLER
200, to temper drain water below 120°F (49°C)
2522168
2522169
2522170
1469535
FOAM DETECTION NHTC HARDWARE
FOAM DETECTION NHPC HARDWARE
REMOTE FAULT INDICATION NHTC/NHPC
HIGH HUMIDITY ALARM PACKAGE
ON/OFF high limit duct stat w/indicator
1469536
1469537
1469538
LOW HUMIDITY ALARM PACKAGE
ON/OFF low limit duct stat w/indicator
HIGH HUMIDITY ALARM PACKAGE
ON/OFF high limit wall stat w/indicator
LOW HUMIDITY ALARM PACKAGE
ON/OFF low limit wall stat w/indicator
2522172
146-9000
2522800
FACTORY PROVIDED EXTERNAL DRAIN AIR-GAP - REDUCER
COUPLED CIRCUIT FOR DOUBLE UNIT
KEEPWARM, ALLOWING WATER TEMPERATURE IN THE CYLINDER TO
BE MAINTAINED AT 160°F (70°) FOR QUICK RESPONSE UPON A CALL
FOR HUMIDITY. NHTC OPTION ONLY.
2522803
UNIT NETWORKING NHTC AND NHTC OUTDOOR UP TO 1600 LBS/HR
ONE PACKAGE REQUIRED FOR EACH ADDITIONAL SLAVE HUMIDIFIER
DOUBLE UNIT 150/200 COUNTS AS 2 PACKAGES
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Table 2. Common Accessories Universal
Part No.
1458807
1429527
1329505
Description
Qty
DOUBLE CHECK VALVE FOR WATER INLET LINE
DRAIN WATER SUMP PUMP (HIGH TEMPERATURE)
IN-LINE WATER FILTER
5 micron filter
1469595
1329561
POCKET HYGRO-THERMOMETER DIGITAL DISPLAY
REPLACEMENT WATER FILTERS
1 micron
1329506
REPLACEMENT WATER FILTERS
5 micron
Table 3. Steam Distributors
Part No.
1506165
1506166
1506167
1506168
1506169
1506170
1506171
1506172
1506173
1506174
1506175
1506176
1506177
1506178
1506179
1506180
1506181
1506182
1506183
1506184
1506185
1506186
1506187
1506188
1506189
Description
DISTRIBUTOR SST ASD 12
DISTRIBUTOR SST ASD 18
DISTRIBUTOR SST ASD 24
DISTRIBUTOR SST ASD 30
DISTRIBUTOR SST ASD 36
DISTRIBUTOR SST ASD 42
DISTRIBUTOR SST ASD 48
DISTRIBUTOR SST ASD 54
DISTRIBUTOR SST ASD 60
DISTRIBUTOR SST ASD 66
DISTRIBUTOR SST BSD 12
DISTRIBUTOR SST BSD 18
DISTRIBUTOR SST BSD 24
DISTRIBUTOR SST BSD 30
DISTRIBUTOR SST BSD 36
DISTRIBUTOR SST BSD 42
DISTRIBUTOR SST BSD 48
DISTRIBUTOR SST BSD 54
DISTRIBUTOR SST BSD 60
DISTRIBUTOR SST BSD 66
DISTRIBUTOR SST BSD 72
DISTRIBUTOR SST BSD 78
DISTRIBUTOR SST BSD 84
DISTRIBUTOR SST BSD 90
DISTRIBUTOR SST BSD 96
Qty
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Table 3. Steam Distributors (cont)
Part No.
1506190
1506191
1506192
1506193
1506194
1506195
1506196
1506197
1506198
1506199
1506200
1506201
1506202
1506203
1506204
1506205
1506206
1506207
1506208
1506209
1506210
1506211
Description
Qty
DISTRIBUTOR SST BSD 102
DISTRIBUTOR SST CSD 24
DISTRIBUTOR SST CSD 30
DISTRIBUTOR SST CSD 36
DISTRIBUTOR SST CSD 42
DISTRIBUTOR SST CSD 48
DISTRIBUTOR SST CSD 54
DISTRIBUTOR SST CSD 60
DISTRIBUTOR SST CSD 66
DISTRIBUTOR SST CSD 72
DISTRIBUTOR SST CSD 78
DISTRIBUTOR SST CSD 84
DISTRIBUTOR SST CSD 90
DISTRIBUTOR SST CSD 96
DISTRIBUTOR SST CSD 102
DISTRIBUTOR SST CSD 108
DISTRIBUTOR SST CSD 114
DISTRIBUTOR SST CSD 120
DISTRIBUTOR SST CSD 126
DISTRIBUTOR SST CSD 132
DISTRIBUTOR SST CSD 138
DISTRIBUTOR SST CSD 144
Table 4. Steam Distributor Accessories
Part No.
Description
Qty
Large Size Steam Distribution Accessories (>33 lb/hr)
1329633
1329664
1859602
1859603
1329643
STEAM SUPPLY LINE TEE
1e" x 1e" x 1e" OD
LARGE STEAM SUPPLY HEADER 1 INTO 3
1e" OD connections
SPLITTING MANIFOLD 1 INTO 2
1½" to f" x f" OD
SPLITTING MANIFOLD 1 INTO 3
1e" to f" x f" x f" OD
BALANCING VALVE MANUAL FOR 1e" LINE
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Table 4. Steam Distributor Accessories (cont)
Part No.
Description
Qty
Small Size Steam Distribution Accessories (<33 lb/hr)
BALANCING VALVE MANUAL TYPE FOR f" LINE
1329642
1329663
SMALL STEAM SUPPLY HEADER 1 INTO 3
f" x f" x f" x f"
1329662
1328810
STEAM SUPPLY LINE TEE
f" x f" x f" OD
INSULATED FLEXIBLE STEAM SUPPLY HOSE
Actual f" ID fits with ASD and BSD type steam distributors, used with models
030 and smaller humidifiers.
Feet
Feet
Feet
NOTE
It is recommended that all runs of steam piping be run in hard
copper with ½" thick foam insulation and that flexible steam
hose always be used to make a flexible coupling to the
steam distributor and the cylinder steam outlet.
1328820
INSULATED FLEXIBLE STEAM SUPPLY HOSE
Actual 1¾" ID fits with CSD type steam distributors, used with models 050 to
200 humidifiers.
NOTE
It is recommended that all runs of steam piping be run in hard
copper with ½" thick foam insulation and that flexible steam
hose always be used to make a flexible coupling to the
steam distributor and the cylinder steam outlet.
1328840
1329634
1329635
CONDENSATE RETURN HOSE
Rubber, d" ID, fits over d" OD copper tube condensate leg on all steam
distributors, factory supplied/installed with built on blower packs. Copper can be
used for condensate lines provided that condensate hose always be used to
make a flexible coupling to the steam distributor.
SMALL STEAM SUPPLY HOSE CONDENSATE TRAP TEE
f" x f" x d" OD, must be used at low points in steam supply hose to prevent
condensate build-up that would result in blockage, or to remove excessive
condensate can be routed to fill cup if humidifier is below trap, or to any floor
drain.
LARGE STEAM SUPPLY HOSE CONDENSATE TRAP TEE
1e" x 1e" x d" OD, must be used at low points in steam supply hose to prevent
condensate build-up that would result in steam blockage, or to remove
excessive condensate due to long steam lines, condensate can be routed to fill
cup for recycling if humidifier is below trap, or to any floor drain.
Other Accessories
1507846
1508165
STEAM LINE REDUCER
1¾" to f" Copper
STEAM LINE REDUCER
1¾" to f" Stainless Steel
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Table 5. SAM-e Header
Part No.
Description
Qty
1503269
3" CENTERS, 18" (45.7 cm) WIDE
3 Steam tubes
1503270
1503271
1503272
1503273
1503274
1503275
1503276
1503277
1503278
1503279
1503280
1503281
1503282
1503283
1503284
1503285
1503286
1503287
1503288
1503289
3" CENTERS, 24" (61.0 cm) WIDE
5 Steam tubes
3" CENTERS, 30" (76.2 cm) WIDE
7 Steam tubes
3" CENTERS, 36" (91.4 cm) WIDE
9 Steam tubes
3" CENTERS, 42" (106.7 cm) WIDE
11 Steam tubes
3" CENTERS, 48" (121.9 cm) WIDE
13 Steam tubes
3" CENTERS, 54" (137.2 cm) WIDE
15 Steam tubes
3" CENTERS, 60" (152.4 cm) WIDE
17 Steam tubes
3" CENTERS, 66" (167.6 cm) WIDE
19 Steam tubes
3" CENTERS, 72" (182.9 cm) WIDE
21 Steam tubes
3" CENTERS, 78" (198.1 cm) WIDE
23 Steam tubes
3" CENTERS, 84" (213.4 cm) WIDE
25 Steam tubes
3" CENTERS, 90" (228.6 cm) WIDE
27 Steam tubes
3" CENTERS, 96" (243.8 cm) WIDE
29 Steam tubes
3" CENTERS, 102" (259.1 cm) WIDE
31 Steam tubes
3" CENTERS, 108" (274.3 cm) WIDE
33 Steam tubes
3" CENTERS, 114" (289.6 cm) WIDE
35 Steam tubes
3" CENTERS, 120" (304.8 cm) WIDE
37 Steam tubes
3" CENTERS, 126" (320.0 cm) WIDE
39 Steam tubes
3" CENTERS, 132" (335.3 cm) WIDE
41 Steam tubes
3" CENTERS, 138" (350.5 cm) WIDE
43 Steam tubes
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Table 5. SAM-e Header (cont)
Part No.
Description
Qty
1503290
3" CENTERS, 144" (365.8 cm) WIDE
45 Steam tubes
– – –
3" CENTERS, 144+" (365.8+ cm) WIDE
Consult factory
1503309
1503310
1503331
1503312
1503313
1503314
1503315
1503316
1503317
1503318
1503319
1503320
1503321
1503322
1503323
1503324
1503325
1503326
1503327
6" CENTERS, 18" (45.7 cm) WIDE
2 Steam tubes
6" CENTERS, 24" (61.0 cm) WIDE
3 Steam tubes
6" CENTERS, 30" (76.2 cm) WIDE
4 Steam tubes
6" CENTERS, 36" (91.4 cm) WIDE
5 Steam tubes
6" CENTERS, 42" (106.7 cm) WIDE
6 Steam tubes
6" CENTERS, 48" (121.9 cm) WIDE
7 Steam tubes
6" CENTERS, 54" (137.2 cm) WIDE
8 Steam tubes
6" CENTERS, 60" (152.4 cm) WIDE
9 Steam tubes
6" CENTERS, 66" (167.6 cm) WIDE
10 Steam tubes
6" CENTERS, 72" (182.9 cm) WIDE
11 Steam tubes
3" CENTERS, 78" (198.1 cm) WIDE
12 Steam tubes
6" CENTERS, 84" (213.4 cm) WIDE
13 Steam tubes
6" CENTERS, 90" (228.6 cm) WIDE
14 Steam tubes
6" CENTERS, 96" (243.8 cm) WIDE
15 Steam tubes
6" CENTERS, 102" (259.1 cm) WIDE
16 Steam tubes
6" CENTERS, 108" (274.3 cm) WIDE
17 Steam tubes
6" CENTERS, 114" (289.6 cm) WIDE
18 Steam tubes
6" CENTERS, 120" (304.8 cm) WIDE
19 Steam tubes
6" CENTERS, 126" (320.0 cm) WIDE
20 Steam tubes
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Table 5. SAM-e Header (cont)
Part No.
Description
Qty
1503328
6" CENTERS, 132" (335.3 cm) WIDE
21 Steam tubes
1503329
1503330
– – –
6" CENTERS, 138" (350.5 cm) WIDE
22 Steam tubes
6" CENTERS, 144" (365.8 cm) WIDE
23 Steam tubes
6" CENTERS, 144+" (365.8+ cm) WIDE
Consult factory
1506789
1506790
1506791
1506792
1506794
1506795
1506796
1507729
1507730
1507731
– – –
9" CENTERS, 36" (91.4 cm) WIDE
3 Steam tubes
9" CENTERS, 48" (121.9 cm) WIDE
5 Steam tubes
9" CENTERS, 60" (152.4 cm) WIDE
7 Steam tubes
9" CENTERS, 72" (182.9 cm) WIDE
9 Steam tubes
9" CENTERS, 84" (213.4 cm) WIDE
11 Steam tubes
9" CENTERS, 96" (243.8 cm) WIDE
13 Steam tubes
9" CENTERS, 108" (274.3 cm) WIDE
15 Steam tubes
9" CENTERS, 120" (304.8 cm) WIDE
17 Steam tubes
9" CENTERS, 132" (335.3 cm) WIDE
19 Steam tubes
9" CENTERS, 144" (365.8 cm) WIDE
21 Steam tubes
9" CENTERS, 144+" (365.8+ cm) WIDE
Consult factory
1506797
1506798
1506799
1506800
1506801
1506802
12" CENTERS, 36" (91.4 cm) WIDE
3 Steam tubes
12" CENTERS, 48" (121.9 cm) WIDE
4 Steam tubes
12" CENTERS, 60" (152.4 cm) WIDE
5 Steam tubes
12" CENTERS, 72" (182.9 cm) WIDE
6 Steam tubes
12" CENTERS, 84" (213.4 cm) WIDE
7 Steam tubes
12" CENTERS, 96" (243.8 cm) WIDE
8 Steam tubes
10-30
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Table 5. SAM-e Header (cont)
Part No.
Description
Qty
1506803
12" CENTERS, 108" (274.3 cm) WIDE
9 Steam tubes
1506804
1506805
1506806
– – –
12" CENTERS, 120" (304.8 cm) WIDE
10 Steam tubes
12" CENTERS, 132" (335.3 cm) WIDE
11 Steam tubes
12" CENTERS, 144" (365.8 cm) WIDE
12 Steam tubes
12" CENTERS, 144+" (365.8+ cm) WIDE
Consult factory
Table 6. Adjustable Mounting Frame for SAM-e
Part No.
Description
Qty
1504697
MOUNTING FRAME
SAM-e 9" to 15"
1503469
1503470
1503471
MOUNTING FRAME
SAM-e 16" to 27"
MOUNTING FRAME
SAM-e 28" to 51"
MOUNTING FRAME
SAM-e 52" to 99"
Table 7. SAM-e Tube Matrix
Part No.
Description
Qty
1503388
TYPE A, 18" (45.7 cm) WIDE
15 lbs/hr (7 kg/hr)
1503389
1503390
1503391
1503392
1506393
1503394
1503395
TYPE A, 24" (61.0 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 30" (76.2 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 36" (91.4 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 42" (106.7 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 48" (121.9 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 54" (137.2 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 60" (152.4 cm) WIDE
15 lbs/hr (7 kg/hr)
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Table 7. SAM-e Tube Matrix (cont)
Part No.
Description
Qty
1503396
TYPE A, 66" (167.6 cm) WIDE
15 lbs/hr (7 kg/hr)
1503397
1503398
1503399
1503400
1503401
1503402
1503403
1503404
1503405
1503406
1503407
1503408
1503409
1503411
1503412
1503413
1503414
1506415
1503416
1503417
TYPE A, 72" (182.9 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 78" (198.1 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 84" (213.4 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 90" (228.6 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 96" (243.8 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 102" (259.1 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 108" (274.3 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 114" (289.6 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 120" (304.8 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 126" (320.0 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 132" (335.3 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 138" (350.5 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE A, 144" (365.8 cm) WIDE
15 lbs/hr (7 kg/hr)
TYPE B, 24" (61.0 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 30" (76.2 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 36" (91.4 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 42" (106.7 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 48" (121.9 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 54" (137.2 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 60" (152.4 cm) WIDE
35 lbs/hr (16 kg/hr)
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Table 7. SAM-e Tube Matrix (cont)
Part No.
Description
Qty
1503418
TYPE B, 66" (167.6 cm) WIDE
35 lbs/hr (16 kg/hr)
1503419
1503420
1503421
1503422
1503423
1503424
1503425
1503426
1503427
1503428
1503429
1503430
1503431
1509391
1509392
1509393
1509394
1509395
1509396
1509397
TYPE B, 72" (182.9 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 78" (198.1 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 84" (213.4 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 90" (228.6 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 96" (243.8 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 102" (259.1 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 108" (274.3 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 114" (289.6 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 120" (304.8 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 126" (320.0 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 132" (335.3 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 138" (350.5 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B, 144" (365.8 cm) WIDE
35 lbs/hr (16 kg/hr)
TYPE B+, 30" (76.2 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 36" (91.4 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 42" (106.7 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 48" (121.9 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 54" (137.2 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 60" (152.4 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 66" (167.6 cm) WIDE
55 lbs/hr (25 kg/hr)
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Table 7. SAM-e Tube Matrix (cont)
Part No.
Description
Qty
1509398
TYPE B+, 72" (182.9 cm) WIDE
55 lbs/hr (25 kg/hr)
1509399
1509400
1509401
1509402
1509403
1509404
1509405
1509406
1509407
1509408
1509409
1509410
1503440
1503441
1503442
1503443
1503444
1503445
1503446
1503447
TYPE B+, 78" (198.1 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 84" (213.4 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 90" (228.6 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 96" (243.8 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 102" (259.1 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 108" (274.3 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 114" (289.6 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 120" (304.8 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 126" (320.0 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 132" (335.3 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 138" (350.5 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE B+, 144" (365.8 cm) WIDE
55 lbs/hr (25 kg/hr)
TYPE C, 36" (91.4 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 42" (106.7 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 48" (121.9 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 54" (137.2 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 60" (152.4 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 66" (167.6 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 72" (182.9 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 78" (198.1 cm) WIDE
75 lbs/hr (34 kg/hr)
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Table 7. SAM-e Tube Matrix (cont)
Part No.
Description
Qty
1503448
TYPE C, 84" (213.4 cm) WIDE
75 lbs/hr (34 kg/hr)
1503449
1503450
1503451
1503452
1503453
1503454
1503455
1503456
1503457
1503458
TYPE C, 90" (228.6 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 96" (243.8 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 102" (259.1 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 108" (274.3 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 114" (289.6 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 120" (304.8 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 126" (320.0 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 132" (335.3 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 138" (350.5 cm) WIDE
75 lbs/hr (34 kg/hr)
TYPE C, 144" (365.8 cm) WIDE
75 lbs/hr (34 kg/hr)
NOTE: Add 6" (15.2 cm) to in-duct height for outside-duct mounting of header.
Table 8. SAM-e Inlet and Adapter Configurations
Part No.
1503479
1503480
1503481
1503482
1503483
1503484
1503485
1503486
Description
Inlet Adapter Kit 1, SAM-e, 100 lbs/hr 1.75"
Inlet Adapter Kit 2, SAM-e, 200 lbs/hr 2x1.75"
Inlet Adapter Kit 3, SAM-e, 300 lbs/hr 3x1.75"
Inlet Adapter Kit 4, SAM-e, 400 lbs/hr 4x1.75"
Inlet Adapter Kit 5, SAM-e, 500 lbs/hr 5x1.75"
Inlet Adapter Kit 6, SAM-e, 600 lbs/hr 6x1.75"
Inlet Adapter Kit 7, SAM-e, 700 lbs/hr 7x1.75"
Inlet Adapter Kit 8, SAM-e, 800 lbs/hr 8x1.75"
Qty
NOTES: 1. Inlet/Adapter: Allows direct connection of the humidifier steam outlets to the SAM-e. Therefore, there is no
adapter located at the humidifier.
2. Consult SAM-e Shop Drawings for more details.
3. All adapters come complete with hose/clamp connections for all outlets.
4. All electrode humidifiers must run individual steam lines directly to SAM-e.
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Table 9. Remote Blower Pack
Part No.
2530893
2530891
2530889
2530892
2530888
2530887
2530886
2530900
2530898
2530897
2530899
2530896
2530895
2530894
Description
Qty
Remote Blower Pack 5 - 30 lbs/hr 110-120V
Remote Blower Pack 5 - 30 lbs/hr 208V
Remote Blower Pack 5 - 30 lbs/hr 220-240V
Remote Blower Pack 5 - 30 lbs/hr 277V
Remote Blower Pack 5 - 30 lbs/hr 380V
Remote Blower Pack 5 - 30 lbs/hr 440-480V
Remote Blower Pack 5 - 30 lbs/hr 550-600V
Remote Blower Pack 50 - 100 lbs/hr 110-120V
Remote Blower Pack 50 - 100 lbs/hr 208V
Remote Blower Pack 50 - 100 lbs/hr 220-240V
Remote Blower Pack 50 - 100 lbs/hr 277V
Remote Blower Pack 50 - 100 lbs/hr 380V
Remote Blower Pack 50 - 100 lbs/hr 440-480V
Remote Blower Pack 50 - 100 lbs/hr 550-600V
Table 10. Built-On Blower Pack
Part No.
2522142
2522143
2522144
2522145
2522147
2522148
2522149
2524849
2524850
2524851
2524852
2524853
2524854
Description
Qty
Built-on Blower Pack, NHTC/NHPC 005 120V
Built-on Blower Pack, NHTC/NHPC 010-030 208V
Built-on Blower Pack, NHTC/NHPC 010-030 220-240V
Built-on Blower Pack, NHTC/NHPC 010-030 277V
Built-on Blower Pack, NHTC/NHPC 010-030 380V
Built-on Blower Pack, NHTC/NHPC 010-030 440-480V
Built-on Blower Pack, NHTC/NHPC 010-030 550-600V
Built-on Blower Pack, NHTC/NHPC 050-100 208V
Built-on Blower Pack, NHTC/NHPC 050-100 220-240V
Built-on Blower Pack, NHTC/NHPC 050-100 277V
Built-on Blower Pack, NHTC/NHPC 050-100 308V
Built-on Blower Pack, NHTC/NHPC 050-100 440-480V
Built-on Blower Pack, NHTC/NHPC 050-100 550-600V
10-30
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Table 11. Controls – ON/OFF
Part No.
2520259
Description
Qty
Control ____
DIGITAL HUMIDISTAT WALL MOUNTED ON/OFF
On/off wall mounted humidistat applicable as control humidistat or high limit
10% to 90% RH range with 5% non-adjustable differential.
High Limit ____
Control ____
2520273
132-9109
DIGITAL HUMIDISTAT DUCT MOUNTED ON/OFF PACKAGE
On/off duct mounted humidistat, applicable as a control humidistat or high limit,
15% to 90% RH range with 4% non-adjustable differential.
High Limit ____
PRESSURE ELECTRIC SWITCH
On/off, remote mounted, 3 to 20 PSIG range, factory set to 13 PSIG with 2 to
6 PSIG fully adjustable differential, factory set to 3 PSIG. For use with
pneumatic humidistat (by others).
132-9203
146-9000
AIR PROVING
On/off duct mounted, pressure differential switch, 0.07 IWC to 12.0 IWC fully
adjustable operating range, good for positive, negative or differential pressure
applications, stops humidifier if no differential pressure is sensed.
COUPLED CIRCUITS
Factory internally wired in parallel to enable control of double circuit unit from
one set of external controls. Applies to NHTC 150 and 200 models only.
NOTE: NORTEC NH Series humidifiers must have a closed circuit across terminals 8 and 10. NORTEC highly
recommends the use of a high limit humidistat and air proving switch in series for this function.
Table 12. Modulating Control By NORTEC
Part No.
Description
Qty
Control ____
2520266
DIGITAL WALL CONTROLLER WITH DUCT SENSOR PACKAGE
This is a digital LCD setpoint controller with a duct mounted humidity sensor
used for modulating high limit or control.
High Limit ____
Control ____
2520261
DIGITAL WALL CONTROLLER WITHOUT INTEGRAL SENSOR
This is a digital LCD setpoint controller to be used with one or all of the
following remote sensors: remote wall sensor, remote duct sensor and outdoor High Limit ____
duct mounted temperature sensor.
1510142
2520263
DIGITAL WALL CONTROLLER WITH INTEGRAL SENSOR
This is a digital LCD setpoint controller with a wall mounted humidity sensor
used for humidity control in the space.
Control
____
High Limit ____
OUTDOOR DUCT MOUNT TEMPERATURE SET BACK
This sensor can be mounted directly onto the fresh air intake of the ventilation
duct. The humidistat controller reads the outdoor temperature and resets the
humidity control setpoint to prevent condensation in windows or building
structures. Use with modulating controllers above.
1509857
1509858
REMOTE DUCT SENSOR
This humidity sensor can be mounted directly onto the return ventilation as the
main controlling sensor. It can also be used as a supply high limit sensor. It
must be used in conjunction with any other controller for remote sensing.
REMOTE WALL SENSOR
This humidity sensor can be mounted on a wall as the main controlling sensor.
It must be used in conjunction with any other controller for remote sensing.
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Table 13. Modulating Demand Signal By Others Single Channel
Part No.
2523060
2523062
2523064
2523066
2523090
2523092
2523094
2523096
Description
Qty
0 - 5 Vdc single channel Demand signal acceptance
0 - 20 mA single channel Demand signal acceptance
4 - 20 mA single channel Demand signal acceptance
0 - 10 Vdc single channel Demand signal acceptance
0 - 16 Vdc single channel Demand signal acceptance
1 - 5 Vdc single channel Demand signal acceptance
2 - 10 Vdc single channel Demand signal acceptance
0 - 20 Vdc single channel Demand signal acceptance
Table 14. Modulating Demand Signal By Others Dual Channel
Part No.
2523061
2526063
2523065
2523089
2523091
2523093
2523095
2523097
Description
Qty
0 - 5 Vdc dual channel Demand signal acceptance
0 - 20 mA dual channel Demand signal acceptance
4 - 20 mA dual channel Demand signal acceptance
0 - 10 Vdc dual channel Demand signal acceptance
0 - 16 Vdc dual channel Demand signal acceptance
1 - 5 Vdc dual channel Demand signal acceptance
2 - 10 Vdc dual channel Demand signal acceptance
0 - 20 Vdc dual channel Demand signal acceptance
NOTE: : NHPC does not accept dual signal control
Table 15. Modulation By Others: Transducer Signal (NHTC AND NHTC OUTDOOR ONLY)
Part No.
2523100
2523101
2523102
2523104
2523105
2523107
2523110
2523111
2523112
2523113
2523114
2523115
2523116
Description
Qty
0 - 5 Vdc single channel Transducer singal acceptance
0 - 5Vdc dual channel Transducer singal acceptance
0 - 20 mA single channel Transducer signal acceptance
0 - 20 mA dual channel Transducer signal acceptance
4 - 20 mA single channel Transducer signal acceptance
4 - 20 mA dual channel Transducer signal acceptance
0 - 10 Vdc single channel Transducer signal acceptance
0 - 10 Vdc dual channel Transducer signal acceptance
0 - 16 Vdc single channel Transducer signal acceptance
0 - 16 Vdc dual channel Transducer signal acceptance
1 - 5 Vdc single channel Transducer signal acceptance
1 - 5 Vdc dual channel Transducer signal acceptance
2 - 10 Vdc single channel Transducer signal acceptance
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2523117
2523118
2523119
2 - 10 Vdc dual channel Transducer signal acceptance
0 - 20 Vdc single channel Transducer signal acceptance
0 - 20 Vdc dual channel Transducer signal acceptance
Table 16. NORTEC OnLine Options (NHTC only)
Part No.
Description
Qty
1509780
NORTEC ONLINE
Static IP Option for NHTC
1509781
1509782
1509783
1509784
NORTEC ONLINE
DHCP Option for NHTC
NORTEC ONLINE
GPRS Option for NHTC
NORTEC ONLINE
Dial-Up Option for NHTC
NORTEC ONLINE
Slave Option for NHTC
Table 17. NORTEC Links Options (NHTC only)
Part No.
Description
Qty
2525534
NORTEC LINKS 2 FOR NHTC
BACnet/IP
2527106
2527108
2527107
2522194
NORTEC LINKS 2 FOR NHTC
BACnet/MSTP
NORTEC LINKS 2 FOR NHTC
Johnson N2
NORTEC LINKS 2 FOR NHTC
LonWorks
NORTEC LINKS 2 FOR NHTC
Slave
NOTES:: NHTC Total Controller has the Modbus communication built into the PCB Processor for
remote monitoring and control using only BAS/BMS support Modbus
Table 18. NH Series Fusing Options
Part No.
2522468
2522470
2522471
2522472
2522474
2522475
2522476
2522477
Description
FUSING NHTC/PC 020-030/208-240/3
Qty
FUSING NHTC/PC 005-020/120-277/1
FUSING NHTC/PC 010-020/380-600/1
FUSING NHTC/PC 020-030/440-600/3
FUSING NHTC/PC 050-075/208-240/3
FUSING NHTC/PC 050-075/40-600/3
FUSING NHTC/PC 100/208-240/3
FUSING NHTC/PC 100/440-480/3
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2522478
2522479
2522480
2522481
2522482
2522483
FUSING NHTC/PC 100/550-600/3
FUSING NHTC/PC 150/208-240/3
FUSING NHTC/PC 150/440-600/3
FUSING NHTC/PC 200/208-240/3
FUSING NHTC/PC 200/440-480/3
FUSING NHTC/NHPC 200/550-600/3
C. SCHEDULE
Humidifier Information
Zone Label ___________ Zone Load ___________ Humidifier Output ______ External Protection _____
Humidifier Label _______ Humidifier Model _______ Voltage/Phase (VAC) ___ Requirement (A) _______
Control Information
Demand
By Nortec By Others
On/Off
By Nortec By Others
Transducer
By Nortec By Others
Space Control
High Limit
Air Proving
By Nortec
By Others
None (Blower Pack)
Distributor Information
Blower Pack
Built On G
Remote Mounted G
None (Duct)
G
Duct Information
Distributor
Width ___________
Length ___________
Vertical Airflow G
ASD/BSD/CSD? _______ SAM-e
No. Of Distributors _____ Header Length ________ No. of Tubes _________
Length ________ Types of Tubs _________ Length ______________
10-30
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WARRANTY
(1) Walter Meier Inc. and/or Walter Meier Ltd. (hereinafter collectively referred to as THE
COMPANY), warrant for a period of two years after installation or 30 months from
manufacturer’s ship date, whichever date is earlier, 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.
(2) 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.
(3) 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.
(4) 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 original
equipment manufacturer from date of original shipment of humidifier.
(5) 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.
(6) 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.
(7) THE COMPANY makes no warranty and assumes no liability whatsoever for damage
resulting from freezing of the humidifier, supply lines, drain lines, or steam distribution
systems.
(8) THE COMPANY makes no warranty and assumes no liability whatsoever for
equipment that has failed due to ambient conditions when installed in locations having
climates below 14°F (-10°C) during January or above 104°F (40°C) during July. (See
Table 1: Weather Design Data above).
(9) THE COMPANY retains the right to change the design, specification and performance
criteria of its products without notice or obligation.
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INSTALLATION DATE (MM/DD/YYYY)
MODEL #
SERIAL #
CYLINDER #
Cylinder Replacement Date (MM/DD/YYYY)
Authorized Agent:
U.S.A.
CANADA
Walter Meier (Climate USA) Inc.
Walter Meier (Climate Canada) Ltd.
826 Proctor Avenue
2740 Fenton Road
Ogdensburg, NY 13669
Ottawa, ON K1T 3T7
TEL: 1-866-NORTEC-1
FAX: (613) 822-7964
TEL: 1-866-NORTEC-1
EMAIL: [email protected]
WEBSITE: www.humidity.com
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