Nortec NH User Manual

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Page 1

Series

NHTC / NHPC ELECTRODE STEAM HUMIDIFIER

Inst allation Manual

2522381-C

Page 2

PROPRIETARY NOTICE

This document and the information disclosed herein are proprietary data of WALTER MEIER LTD. Neither this document nor the information contained herein shall be reproduced used, or disclosed to others without the written authorization of WALTER MEIER LTD., except to the exte nt required for installation or maintenance of recipient’s equipment. All references to the NORTEC name should be taken as referring to WALTER MEIER LTD.

LIABILITY NOTICE

WALTER MEIER LTD. does not accept any liability for installations of humidity equipment installed by unqualified personnel or the use of parts/components/equipment that are not authorized or approved by WALTER MEIER LTD.

SPECIFICATION LABEL LOCATION

The Specification Label for your NH Series Humidifier is located on the bottom of the unit. You will find it attached to the skirt that separates the electrical and plumbing comp ar tments on the electrical compartment side.

RECORD OF REVISIONS

For each revision, put the revised pages in your manual and disca rd the superseded pages. W rite the revision number and revision date, date put in manual, and the incorporator’s initials in the applicable columns on the Record of Revisions.

Revision

Number

Revision

Date

Date Put

In Manual By

Revision

Number

Revision

Date

Date Put

In Manual By

2008-08-28

Page 3

TABLE OF CONTENTS

Subject Page

10-00 INTRODUCTION

1. PREINSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

A. RECEIVING & UNPACKING EQUIPMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

2. PACKAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

A. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

B. HUMIDIFIER AND CONTROLS BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3

C. DISTRIBUTOR BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

D. ACCESSORIES BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3. PREINSTALLATION EQUIPMENT VERIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

A. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5

10-10 INSTALLATION PROCEDURES

1. HUMIDIFIER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

A. LOCATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

B. MOUNTING WITH KEYHOLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

C. MOUNTING WITH WALL BRACKET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10

D. WATER SUPPLY LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

E. DRAIN LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

F. STEAM RUNS AND CONDENSATE RETURNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

G. ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

H. CONTROL WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

I. OPTIONAL OUTDOOR TEMPERATURE RESET FUNCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

J. HUMIDITY TRANSDUCER SIGNAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

K. NETWORKING NHTCS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

L. NORTEC ONLINE INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23

10-20 OPERATION

1. NHTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

A. NHTC COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

B. HUMIDIFIER START-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

C. BASIC STEAM PRODUCTION METHOD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

D. CYLINDER LIFE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

E. SOFTWARE INITIAL SELF-TEST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

F. SOFTWARE FLOW CHART WITH DEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

G. SELF-HELP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .33

H. SYSTEM MESSAGES AND LIGHTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

I. DOUBLE UNIT OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

2. STEAM DISTRIBUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

A. STEAM DISTRIBUTOR OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

B. SAM-E OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

C. BLOWER PACK OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

3. CONTROLS AND REMOTE COMMUNICATION (OPTIONAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

A. DIGITAL CONTROL OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

B. DIGITAL TRANSDUCER OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

C. REMOTE CONNECTIONS (OPTIONAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

D. NORTEC LINKS OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

E. NORTEC ONLINE OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

10-30 MAINTENANCE PROCEDURES

1. NH ELECTRODE STEAM HUMIDIFIERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

A. MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

B. WHEN TO REPLACE THE STEAM CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

C. EXTENDED SHUT-DOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .50

D. COMPONENTS OF THE STEAM CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

2008-08-28

Page 4

E. HOW TO REMOVE THE STEAM CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .52

F. MANDATORY CLEANING OF THE DRAIN VALVE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .53

G. HOW TO INSTALL THE REPLACEMENT CYLINDER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

10-40 TROUBLESHOOTING

1. TROUBLESHOOTING NH ELECTRODE STEAM HUMIDIFIERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

A. PREPARATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

B. STARTING POINT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

C. NHTC/NHPC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56

2. TROUBLESHOOTING DISTRIBUTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

A. TROUBLESHOOTING ATMOSPHERIC DISTRIBUTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

3. SAM-E TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58

A. PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

4. BLOWER PACKS TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

A. PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

5. DIGITAL ON/OFF HUMIDISTAT SENSOR CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

A. PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .59

6. 0-10V DIGITAL HUMIDISTAT SENSOR CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

A. PROCEDURE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

10-50 TECHNICAL

1. WIRING AND TERMINALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

A. HUMIDIFIER CONTROL INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

B. NH WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

2. CHECK LISTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

A. PRE-NORTEC ONLINE START UP CHECKLIST WIRING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

B. PRE-NORTEC LINKS START-UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .71

C. HUMIDIFIER MANDATORY PRE-START UP CHECKLIST . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .72

D. HUMIDIFIER MANDATORY START-UP CHECKLIST AND QUICK REFERENCE . . . . . . . . . . . . . . . .73

E. PERIODIC MAINTENANCE CHECKLIST AND QUICK REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . 74

3. SPARE PARTS AND EXPLODED VIEWS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

A. ASD, BSD, CSD DISTRIBUTOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

B. SAM-E SPARE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

C. NH SERIES HUMIDIFIER SPARE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .77

WARRANTY

2008-08-28

Page 5

LIST OF FIGURES

Figure Page

10-00 INTRODUCTION

Figure 1. NHTC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

Figure 2. Humidifier Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Figure 3. Distributor Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Figure 4. SAM-e Distributor Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Figure 5. Remote Mounted Blower Pack Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

Figure 6. Typical NHTC Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-7

10-10 INSTALLATION PROCEDURES

Figure 1. Clearances and Operating Conditions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Figure 2. Mounting with Keyholes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Figure 3. Mounting with Mounting Bracket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12

Figure 4. Drain Water and Supply Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13

Figure 5. Steam Run and Condensate Return Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15

Figure 6. Steam Run and Condensate Return Installation Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Figure 7. Primary Voltage Supply Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18

Figure 8. On-Off Control Guidelines and Low Voltage Terminal Strip . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20

Figure 9. NORTEC Control Guidelines and Wiring (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21

Figure 10. Setpoint Versus Outdoor Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22

Figure 11. NORTEC Humid ity T r ansducer Guidelines and Wiring (Optional) . . . . . . . . . . . . . . . . . . . . . . . . .24

Figure 12. Networking NHTC s (Optiona l) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25

Figure 13. NORTEC On Line Installation Guidelines (Optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26

10-20 OPERATION

Figure 1. NHTC Components (Front View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Figure 2. NHTC Components (Side View) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28

Figure 3. Humidifier Start-Up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31

Figure 4. Drain Rate Versus Water Conductivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Figure 5. Capacity Setting and Cylinder Life . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31

Figure 6. Basic Steam Production Method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Figure 7. Software Flow Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .34

Figure 8. Steam Distributor Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .44

Figure 9. SAM-e Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

Figure 10. Blower Pack Operation and Adjustments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .45

Figure 11. NORTEC Digital Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .46

Figure 12. Difference from Setpoint in Relation to Demand Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

Figure 13. Duct and Wall Mounted Transdu cer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .47

10-30 MAINTENANCE PROCEDURES

Figure 1. Cylinder Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .51

Figure 2. Cylinder Removal Procedure. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

Figure 3. Drain Valve Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53

Figure 4. Cylinder Replacement Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .54

10-50 TECHNICAL

Figure 1. NHTC/NHPC Double Unit Wiring Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .69

Figure 2. NHTC/NHPC Wiring Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .70

Figure 3. Distributor Exploded View and Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Figure 4. SAM-e Exploded View and Spare Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .76

Figure 5. NHTC/NHPC Plumbing Compartment Exploded View and Spare Parts . . . . . . . . . . . . . . . . . . . . .77

Figure 6. NHTC/NHPC Electrical Compartment Exploded View and Spare Parts . . . . . . . . . . . . . . . . . . . . .80

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LIST OF TABLES

Table Page

10-10 INSTALLATION PROCEDURE

Table 1. Maximum Recommended Length of Steam Runs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Table 2. Steam Line Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Table 3. Recommended Material and Size for Steam Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14

Table 4. Recommended Condensate Line at Distributor(s) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Table 5. Equivalent Length Elbow and T-Fittings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

Table 6. Humidifier and Distributor Inlet/Outlet Sizes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17

10-20 OPERATION

Table 1. NHTC / NHPC Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29-30

Table 2. Self-Test Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .32

Table 3. Signal Light Status . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41

Table 4. Status Messages with LED State . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .42

10-40 TROUBLESHOOTING

Table 1. Troubleshooting Symptoms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57

Table 2. Ensuring A Demand Signal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58

Table 3. NH System Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .60

Table 4. Term Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .66

10-50 TECHNICAL

Table 1. Controller and Sensor Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68

Table 2. NHTC/NHPC Plumbing Part List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .78

Table 3. NHTC/NHPC Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .81

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INTRODUCTION

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Figure 1. NHTC

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1. PRE-INSTALLATION

A. RECEIVING & UNPACKING EQUIPMENT

(1) Check packing slip to ensure ALL material has been delivered. (2) All material shortages are to be reported to NORTEC within 48 hours from receipt

of goods. NORTEC assumes no responsibility for any material shortages beyond this period.

(3) Inspect shipping boxes for damage and note damages on shipping waybill

accordingly.

(4) After unpacking, inspect equipment for damage and if damage is found, notify the

shipper promptly.

(5) All NORTEC products are shipped on an FOB factory basis. Any and all damage,

breakage or loss claims are to be made directly to the shipping company.

2. PACKAGING

A. GENERAL

(1) The equipment packaging is standardized in that each box in the shipment will

always have the same contents. The following paragraphs identify the contents of each box.

B. HUMIDIFIER AND CONTROLS BOX

(1) The typical equipment found in the humidifier and controls box is shown in Figure

2. The contents of the box are listed on the box. If controls are ordered they will be listed and small accessories that fit into the box will also be listed on the box.

C. DISTRIBUTOR BOX

(1) Depending on the equipment ordered any of the following distributor box

configurations may be received: a. For equipment received if an ASD, BSD, CSD distributor(s) is ordered refer to

Figure 3. b. For equipment received if a SAM-e distributor is ordered refer to Figure 4. c. For equipment received if a RMBP i s ordered refer to Figure 5.

D. ACCESSORIES BOX

(1) Additional accessories such as DWC, DWSP, Filter, and Fill cup extension kits are

shipped in a separate box. Smaller accessories that would fit in the humidifier box are put in the humidifier box and the box is identified as containing such.

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BAG WITH MANUAL, CLAMPS, HOSE SECTION

CONTROLS (IF ORDERED ONLY)

BOX WITH ABBREVIATED INSTRUCTIONS AND BOX CONTENT STICKERS

Figure 2. Humidifier Box

HUMIDIFIER

STEAM HOSE SECTION (NOT SUPPLIED IF BUILT ON BLOWER PACK ORDERED)

H096

Figure 3. Distributor Box

Figure 4. SAM-e Distributor Box

Figure 5. Remote Mounted Blower Pack Box

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3. PREINSTALLATION EQUIPMENT VERIFICATION

A. GENERAL

(1) Ensure that available voltage and phase corresponds with humidifier voltage and

phase as indicated on humidifier’s specification label.

(2) Ensure that the dedicated external fuse disconnect is of sufficient size to handle

the rated amps as indicated on the specification label. Refer to local codes.

(3) Report any discrepancy immediately to the site engineer. (4) Location and mounting is described in Chapter 10-10. (5) Typical installation (See Figure 6.) shows the references to the appropriate

chapter of the manual.

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Figure 6. Typical NHTC Installation (Sheet 1 of 2)

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Figure 7. Typical NHTC Installation (Sheet 2 of 2)

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THIS PAGE INTENTIONALLY LEFT BLANK

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10-10

INSTALLATION

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1. HUMIDIFIER INSTALLATION

A. LOCATION

(1) The NORTEC NHTC series humidifier is designed to mount on a suitable wall or

vertical surface. Do not sit the unit on the floor due to clearances required for plumbing and electrical connections. The clearance dimensions shown in this manual are for reference only and are the minimum required for maintenance on the humidifier. Local and national codes should be consulted before final location and installation of the humidifier. NORTEC cannot accept responsibility for installation code violations. See Figure 1 Clearances and Operating Conditions.

(2) The location of the humidifier should be below the steam distributor. DO NOT

locate the humidifier any further then absolutely necessary from the steam distributor location as net output will be reduced as a result of heat loss through the steam line.

(3) When possible, mount the NHTC humidifier at a height convenient for servicing.

B. MOUNTING WITH KEYHOLES

(1) The NHTC series humidifier is wall mounted using keyholes located on the back of

the unit’s cabinetry. The keyholes are spaced 16 inches apart center to center for large units and 10.7 inches apart for small as per UL certification standard stud spacing dictates.

(2) Use #12 x 3 in. screws. 2 screws are needed for a single unit (NHTC 010 to 100

lbs/hour). 3 screws are needed for a double unit (NHTC 150 to 200 lbs/hour). Insert the screw 16 in. apart. Be sure the screws are level to each other. Proceed to insert the screws into the studs until there is 1/4 in. of screw exposed. Ensure the screws are properly anchored to the wall.

(3) Raise the unit. Align the keyholes on the back of the unit with the screws. Place the

screws through the keyholes. Make sure the unit is level then tighten the screws to secure the unit in place.

(4) Once the unit is securely fixed to the wall, install the “L” shaped brackets into the

same studs the unit is attached to. Place the brackets on top of the unit, inline with the studs. Using the appropriate sized wood screw fasten the “L” brackets to the studs securing the unit from any upward motion. See Figure 2 Mounting with keyhole.

C. MOUNTING WITH WALL BRACKET

(1) For NHTC units that mount using a Wall mounting bracket 3 x #12 3.0 inch wood

screws are to be used.

(2) Wall mounting bracket provided should be securely attached horizontally with open

edge upwards, using field-supplied fasteners. Be sure the bracket is mounted level See Figure 3.

(3) If humidifiers are mounted on a roof, a thermostatically ventilated weather proof

cabinet should be used. Consult factory.

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D. WATER SUPPLY LINE

(4) All water supply and drain line connections should be installed in accordance with

local plumbing codes.

(5) For installation details see Figure 5 & 6.

E. DRAIN LINE

DRAIN WATER FROM HUMIDIFIER CAN BE VERY HOT.

(1) The drain line should not end in a sink used frequently by personnel, or

where plumbing codes prohibit it. Route to a floor drain or equivalent for safety reasons.

(2) For installation details see Figure 4.

F. STEAM RUNS AND CONDENSATE RETURNS

(1) Tables 1 through 6 indicate what material and recommended length to use when

installing atmospheric steam lines. The lengths mentioned are equivalent feet and therefore the full length of tubing with the addition of equivalent feet of elbows and tees.

CAUTION

(2) Figure 5 illustrates the guidelines for installation, routing and trapping of steam

runs and condensate returns.

(3) Table 6 indicates steam outlet size of humidifier and steam inlet size of distributors.

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Figure 1. Clearances and Operating Conditions

Figure 2. Mounting with Keyholes

Figure 3. Mounting with Mounting Bracket

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Figure 4. Drain Water and Supply Connection

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Table 1. Maximum Recommended Length of Steam Line

Unit Size Steam Output Distance Possible Loss Steam Line Size

NH-005 5 lbs/hr 8 feet 1.0 lbs/hr 3/4 NH-010 10 lbs/hr 15 feet 1.5 lbs/hr 3/4 NH-020 20 lbs/hr 20 feet * 2.0 lbs/hr 3/4 NH-030 30 lbs/hr 25 feet * 2.5 lbs/hr 3/4 NH-050 50 lbs/hr 40 feet ** 4.0 lbs/hr 1 ½” NH-075 75 lbs/hr 50 feet ** 5.0 to 10.0 lbs/hr 1 ½” NH-100 100 lbs/hr 50 feet ** 5.0 to 10.0 lbs/hr 1 ½” NH-150 150 lbs/hr 50ft/cylinder ** 5.0 to 10.0 lbs/hr 1 ½” cyl NH-200 200 lbs/hr 50ft/cylinder ** 5.0 to 10.0 lbs/hr 1 ½” cyl

* Use one inch copper steam line for longer runs. ** Use two inch copper steam line for longer runs.

Notes: 1. This table gives the maximum recommended steam run by unit size.

2. The use of steam line other then copper, stainless steel tube or Nortec supplied steam line will void the warranty and may adversely effect the operation of the humidifier

3. The NH-150 and NH-200 are dual units.

Table 2. Steam Line Materials

NORTEC Steam Line Copper Tube (Potable)

Stainless Steel Tube

(RO or DI)

Short Run < 10 feet (3m) yes yes yes Long Run > 10 feet (3m) no yes yes

NOTE

Do not use plastic, steel, or black iron. Long runs affect accuracy of humidifier and its ability to quickly respond to changes in demand when tight control is required.

Table 3. Recommended Materials and Sizes for Steam Runs

Unit Size

lbs/hr kg/hr ft m

Steam Run Steam Line Material Steam Line Description

0-30 0-13 0-10 0-3 Copper Tube 0.750 in MED-L Tubing (0.875 inch OD)

0-30 0-13 30+ 3+ Copper Tube 1.0 inch MED-L Tubing (1.125 inch OD)

0-30 0-13 0-10 0-3 Stainless Steel Tube 0.875 inch Tube x 0.049 inch thick

0-30 0-13 30+ 3+ Stainless Steel Tube 1.125 inch Tube x 0.049 inch thick

50-100 22-45 0-20 0-6 Copper Tube 1.500 in MED-L Tubing (1.625 inch OD)

50-100 22-45 20+ 6+ Copper Tube 2.0 inch MED-L Tubing (2.125 inch OD)

50-100 22-45 0-20 0-6 Stainless Steel Tube 1.750 inch Tube x 0.065 inch thick

50-100 22-45 20+ 6+ Stainless Steel Tube 2 inch Tube x 0.065 inch thick

NOTE

Options show in 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. Insulate steam lines with 1” pipe insulation.

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Figure 5. Steam Run and Condensate Return Installation Guidelines (Sheet 1 of 2)

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Figure 6. Steam Run and Condensate Return Installation Guidelines (Sheet 1 of 2)

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Table 4. Recommended Condensate Line at Distributor(s)

Dispersion Method Condensate Hose Copper Tube (Potable)

1 x Steam Distributor

0.375 inch

NORTEC 132-8840

0.375 inch

3 x Steam Distributor

NORTEC 132-8840

Note: *When using more then 1 steam distributor, the condensate line must be trapped before it is joined together. See figure 4

0.250 inch. MED-L Tubing (0.375 inch OD)

0.500 inch. MED-L Tubing (0.875 inch OD)

Stainless Steel Tube

(RO or DI)

0.375 Tube 0.049 inch thick

0.650 Tube 0.049 inch thick

Table 5. Equivalent Lengths of Elbows and Tee Fittings

Nominal Tube

Diameter

0.750 / 0.875 in. 2 ft. 1 ft. 4 ft.

1.500 / 1.750 in. 3 ft. 6 in. 1ft. 9 in. 7 ft.

2.000 / 2.500 in. 4 ft. 6 in. 2 ft. 3 in. 10 ft.

Standard 90degree

Elbow

Standard 45 degree

Elbow Side Outlet Tee

Table 6. Humidifier and Distributor Inlet/Outlet Sizes

Humidifier Steam Outlet Distributor Steam Inlet

NH 5-30 0.875 in. OD ASD, BSD 0.875 inch OD

NH 50-100 1.75 in. OD CSD 1.75 inch OD

NH 150-200 Two 1.75 in. OD

SAM-e 1.75 inch OD* mini SAM-e 0.875 or 1.75 inch OD**

NOTE: * SAM-e may have multiple 1.75 in. inlets depending on order. ** mini SAM-e inlet is determined on order and may have two 1.75 in. OD inlets.

Blower Pack

0.875 inch OD or

1.75 inch OD

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Figure 7. Primary Voltage Supply Wiring

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G. ELECTRICAL

(1) Primary Voltage Supply Wiring to Humidifier

(a) Local electrical codes should always be followed when installing a NORTEC

Humidifier. Direct wiring to the high voltage terminal is shown in Figure 7.

H. CONTROL WIRING

(1) Controls are available from NORTEC as accessories. If controls were not ordered

with humidifier, they must be purchased or supplied by others. The following information is relevant to all controls, factory supplied or otherwise.

(a) On-Off Controls

CAUTION

REGARDLESS OF SELECTING ON/OFF OR MODULATING CONTROL METHOD, NORTEC HUMIDIFIERS MUST HAVE A CLOSED CIR CUIT

CROSS 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

HIS FUNCTION.

The method and guidelines for installing on/off controls are displayed in Figure 8. It can be combined with all control methods.

(b) Demand Signal Controls Installation

Figure 9 uses the Nortec optional Controllers to demonstrate the typical demand signal installation.

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Figure 8.

On/Off Control Guidelines and Low Voltage Terminal Strip

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Figure 9. NORTEC Control Guidelines and Wiring (Optional)

Page 29

I. OPTIONAL OUTDOOR TEMPERATURE RESET FUNCTION

NOTE

Order outdoor temperature sensor separately, Part #252-0263.

(1) Each humidistat and controller is equipped with an integrated reset function that

will limit the setpoint during cold weather operation. This will prevent condensation on windows and building structures. Figure 10 illustrates how the setpoint reset feature operates.

(2) This feature is enabled by removing the jumper from terminals 8 and 1 on the

humidistat and wiring the outdoor temperature sensor to these terminals.

(3) When the outdoor temperature setback feature is in effect, the humidistat will

normally display the calculated setpoint limit based on the outdoor air temperature. A snowflake will also be displayed to indicate cold weather operation. When any key on the controller is pressed, the LCD screen will display the customer specified setpoint for a short duration.

Figure 10. Setpoint Versus Outdoor Temperature

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J. HUMIDITY TRANSDUCER SIGNAL INSTALLATION

(1) Figure 11 displays the NORTEC optional humidity transducer installation.

K. NETWORKING NHTC

(1) The wiring of master/slave networks are explained in Figure 12. It allows operation

of multiple NHTCs with one control signal.

L. NORTEC ONLINE INSTALLATION

(1) An abbreviated recommended installation of NORTEC OnLine and its components

are shown in Figure 13.

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Figure 11. NORTEC Humidity Transducer Guidelines and Wiring (Optional)

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Figure 12. Networking NHTCs (Optional)

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Figure 13. NORTEC OnLine Installation Guidelines (Optional)

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10-20

OPERATION

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1. NHTC

A. NHTC COMPONENTS

(1) Refer to Figures 1 and 2 when reading Table 1.

B. HUMIDIFIER START-UP

(1) Figure 3 describes the method for powering up a humidifier and the cautions to take.

C. BASIC STEAM PRODUCTION METHOD

(1) Figure 6 describes the method the NH Series humidifier uses to produce pure clean

steam. The NORTEC NH electrode steam humidifier uses NORTEC’s patented AutoAdaptive cycle to calculate drains to maintain optimal performance. Figure 4 Drain Rate vs Water Conductivity depicts an indication of drain amounts.

D. CYLINDER LIFE

(1) The output of all NH Series humidifiers is pure, clean steam; minerals originally in the

incoming water are left behind. These minerals will eventually coat the cylinder electrodes. Therefore, the mineral content of the incoming water, the unit running time and output capacity setting ultimately determine cylinder life. NORTEC’s cylinder life is up to 2,000 hours of operation. Water chemistry and capacity can affect cylinder life. (See Figure 5.) See Table 4 to identify the message which indicates when the cylinder is at the end of its life.

Figure 1. NHTC Components (Front View)

Figure 2. NHTC Components (Side View)

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Table 1. NHTC/NHPC Components

Item Number Component Name Description

1 Steam Connector Used to allow easy replacement of cylinders without disconnecting

the steam line. 2 Condensate Return This inlet is to return condensate to the unit. 3 Fill Cup The fill cup allows isolation from the fill line by supplying an air gap.

It will also overflow any water that cannot enter the cylinder to drain. 4 Float Chamber (Optional) Detection OPTION – Used with the advanced foam detection

setting. 5 Manual Drain Button By pushing this button, manual drain is initiated with software

support. Software support supplies drain cooling if enabled and will

disable manual drain after 10 minutes. 6 Door Interlock The door interlock prevents the unit from running when the front

door is off. For startup and troubleshooting, pulling this interlock will

overide this safety feature. 7 Back-up Drain Back-up drain switch allows the draining of the cylinder without

electronic support. 8 Fill Valve The fill valve allows water to flow up to the fill cup. In units with

Drain Water Cooling to 120 degrees option, this valve is a dual

valve. The second valve is wired in parrallel with the drain valve to

quench the water with fresh cold water everytime the drain is

activated. 9 Drain Canal The drain canal allows all drainable water to accumulate into one

location to then be drained away.

10 Drain Valve Drain valve when energized will allow water to flow down to the

drain canal. When not energized, water flowing from the fill cup will

flow up into the cylinder.

1 1 Transformer The transformer converts the primary supply voltage to the required

24 VAC to the unit electronics. It is protected by a fuse to ensure

that the 24 VAC electronics are protected from surges or shorts.

12 On/Off Switch Turns the unit power on and off. Be aware that high voltage will still

enter the unit even though the 24VAC electronic are disabled. The

contactor will not be energized. Main shut-off should be open before

any servicing is performed.

13 Graphical Display and Menu

Buttons

14 Remote Relay Board (Optional) The remote relay board is a set of 4 dry contacts, rated for 24 VAC

15 NORTEC Cylinder The NOR T EC disposable cylinder contains electrodes that become

The graphical display and buttons are used to navigate through the

software. Use software flowchart as a reference.

1A, which activate in conjunction with humidifier on, steam

production, service and error conditions.

energized when the contactor is closed. This allows current to pass

through the water from one electrode to another, generating heat

within the water. The water then boils and the output is clean pure

steam.

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Table 1. NHTC/NHPC Components (cont)

Item Number Component Name Description

17 Cylinder Plug Cylinder plugs are press fit on cylinder electrode pins. These color

coded connections should fit snuggly, on same color pins. Replace if loose or frayed.

18 Low Voltage T erminal Strip The low voltage terminal strip is the location at which all controls are

connected. See Installation for details.

19 Driver Board The driver board(s) is the housing of all fuses and relays. It is

connected to the total controller, and monitor and activate all humidifier states.

20 Contactor The contactor(s) when energized allow main power to energize the

cylinder electrodes, allowing current to pass, boiling the water.

21 NORTEC OnLine Module

(Optional)

NORTEC ONLINE OPTION NHTC ONLY. This module allows the NHTC to be connected to the internet and communicate information to NORTEC via the internet. See NORTEC OnLine operation for details. NHTC only

22 Links Module

(Optional)

23 Network Terminal Strip The network terminal strip allows up to 13 NHTC units to be

24 Fuse Holder OPTIONAL FUSE PACKAGE provides protection of individual high

25 High Voltage Terminal Strip Connection point of main power lines to the humidifier from the

26 Total Controller The total controller board (hidden in this view) is part of the

NORTEC LINKS OPTION NHTC ONLY This module allows the NHTC to communicate with a BMS system using the communication protocol requested at order. See NORTEC Links operation for details. NHTC only

connected on one Links module and eight OnLine modules. See Installation of NORTEC Links and OnLine for details on wiring humidifier networks.

voltage lines in the humidifier and does not replace fuse and external disconnect.

underside of the strip. It is accompanied by a ground terminal which grounds the cabinet.

graphical display. It is the microcomputer that sends and collects information from the driver boards, network modules and any other humidifier connected to it.

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Figure 3. Humidifier Start-Up

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Figure 5. Capacity Setting and Cylinder LifeFigure 4. Drain Rate Versus Water

Conductivity

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Figure 6. Basic Steam Production Method

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E. SOFTWARE INITIAL SELF-TEST

Table 2. Self-Test Messages

Graphic Display Explanation/Comments (What You Read)

NHTC START-UP: INIT CYLINDER

NHTC START-UP: READING CYLINDER DATA

SELF TEST CYLINDER Inlet V a lve ESC

SELF TEST CYLINDER Drain Valve ESC

SELF TEST CYLINDER Heat Cont. ESC

SELF TEST CYLINDER Pump ESC

SELF TEST CYLINDER Bleed Valve ESC

SELF TEST REMOTE Steam Relay ESC

SELF TEST REMOTE Service Relay ESC

SELF TEST REMOTE Error Relay ESC

SELF TEST REMOTE Oper. Relay ESC

The unit is beginning its bootup routine, along with powering up the EEPROM on the SMART Cylinder

The unit reads the type of cylinder to provide maximum control of operation. If it unable to do so it will skip the rest of the self-test and fault out.

Unit energizes the fill valve for 1 second.

Unit energizes the drain valve for 2 seconds.

Unit closes the contactor for 2 seconds.

Unit activates the pump (if present) for 2 seconds.

Unit activates the bleed valve (if present) for 2 seconds.

Unit activates the steam relay for remote fault indication package and green light.

Unit activates the service relay for remote fault indication package and yellow light.

Unit activates the error relay for remote fault indication package and red light.

Unit activates the unit on relay.

F. SOFTWARE FLOW CHART WITH DEFINITIONS

(1) The flow chart in Figure 7 depicts the software logic and definitions.

G. SELF-HELP

(1) The microcomputer applies corrective actions whenever its self-diagnostics identifies a

problem that it is able to correct by itself. If the corrective action is not successful then it displays a system message. If the corrective action requires a service person, then the microcomputer’s only resort is to stop the unit and display a system message. The unit never stops unless it has to.

(2) After three days of no call from either the on/off controls or the modulating controls,

when active, the three-day drain active feature is automatically activated long enough to drain all water from the steam cylinder. This NORTEC feature will prolong the life of the cylinder. (User selectable, default is ON.)

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Figure 7. Software Flow Chart (Sheet 1 of 7)

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Figure 7. Software Flow Chart (Sheet 2 of 7)

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Figure 7. Software Flow Chart (Sheet 3 of 7)

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Figure 7. Software Flow Chart (Sheet 4 of 7)

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Figure 7. Software Flow Chart (Sheet 5 of 7)

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Figure 7. Software Flow Chart (Sheet 6 of 7)

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Figure 7. Software Flow Chart (Sheet 7 of 7)

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H. SYSTEM MESSAGES AND LIGHTS

(1) Table 3 describes general signal light status meanings.

Table 3. Signal Light Status

Yellow Green Red

OFF OFF OFF Unit is on standby or humidifier has just been energized but has not sensed

production of steam yet.

OFF ON OFF Humidifier senses production of steam.

ON OFF OFF An attention state exists that should not prevent the unit from producing steam

when the controls call for it. Check the message on the screen to try to correct it.

ON ON OFF Prepare to replace cylinder or normal startup operation. May also indicate an

attention during operation. Check the message on the screen to try to correct it.

BLINK OFF OFF Manual Drain On with software drain switch.

OFF BLINK OFF Unit sees a demand, but safeties are open. OFF OFF ON Operation fault (unit will not run).

(2) Table 4 describes common status messages and the lights displayed for each and their

meaning. For a list of warnings and faults, see Chapter 10-40 Troubleshooting.

I. DOUBLE UNIT OPERATION

(1) The unit will report only one cylinder at a time if the unit was ordered without coupled

circuits. You will notice on the screen the indication of which cylinder you are monitoring and in the lower right the option to monitor the alternate cylinder.

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Table 4. Status Messages with LED State

NHTC Display Message LED state System Action

Idle None Unit is made idle.

Humidifying GRN (after steam

production starts)

MANUAL DRAIN: ON YEL (blink) The drain valve is activated.

SAFETY LOOP; OPEN GRN

(blink)

LEVEL SENSOR; ON None Deactivates the fill valve to prevent overfilling.

KEEP WARM ACTIVATED None Keep Warm feature activated, it has closed the

The unit has closed the contactor and is sending current to the cylinder to humidify.

Steam production stopped.

contactor to warm the water.

W19: Cylinder spent YEL, GRN The electronics allow the cylinder to be reset up

to four times before locking out the humidifier.

E19: Cylinder spent YEL, RED Humidifier interrupts operation and the fault relay

is activated.

FOAM: FULL TANK FLUSHING None The unit will initiate a flush of the cylinder and

resume operation.

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Symptom Diagnosed Probable Cause Corrective Action

Unit is awaiting a demand or control signal.

This is normal when there is no need for humidity. If you believe there is a need for humidity, and the unit should not be idle, refer to troubleshooting

Normal Operation

The unit is now boiling water in the cylinder and filling as necessary.

This is not a fault or warning. It is an indication that the manual drain switch has been activated.

Safety loop circuit (terminal 1 and 2) is open.

Water has reached the top of the cylinder and has activated the high water sensor. This is not an error or fault, but is normal on start-up and at the end of a cylinder life span.

Keep Warm feature is enabled and proceeding to a Keep Warm Cycle.

This is normal when there is a need for humidity. If you believe there is no need for humidity, and the unit should idle, refer to troubleshooting

Manual drain switch has been activated. Press Manual Drain button again to

One or more of the safety devices is open as the result of a device failure, improper installation or an unsafe condition has been detected.

1. Normal on start-up with a new cylinder or a cylinder that has been completely drained because of an extended off period. This condition can last several hours until the water in the cylinder has concentrated or the electrodes can no longer provide rated capacity or adjusted capacity. Water level automatically rises to meet the demand.

2. Foaming can also cause an invalid high water indication.

Unit is entering the Keep Warm cycle. The unit has been inactive for a given period and is keeping the water warm.

Normal Operation

stop the drain action.

Determine which device is preventing continuity of the safety loop circuit, and verify that it is functioning properly and is properly installed and calibrated.

If foaming is determined to be the cause of the high water indication, consult your local representative about possible adjustment and/or a foam detection kit. If not foaming, consider it normal operation unless water level is not at the top of the cylinder.

Normal for unit with Keep Warm setting activated.

Electronics have determined cylinder is spent. Within the next 72 hours the humidifier will stop.

Electronics have determined that the cylinder is spent.

The electronics has detected foaming within the cylinder (only for units with the optional Foam Detection Package).

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The cylinder must be replaced with the same type and model.

The unit has detected a foaming condition within the cylinder.

When ordering a new cylinder, quote the model number presently installed in the humidifier.

The unit will initiate corrective action on its own.

Page 51

2. STEAM DISTRIBUTION

A. STEAM DISTRIBUTOR OPERATION

(1) Figure 8 describes the method by which the steam distributor releases pure clean

steam into the duct while collecting condensate and removing it by the condensate return.

B. SAM-e OPERATION

(1) Figure 9 describes the method by which the Short Absorption Manifold releases pure

clean steam into the duct while collecting condensate, removing it by condensate return and ensuring short absorption distance.

C. BLOWER PACK OPERATION

DURING AND FOLLOWING OPERATION OF THE HUMIDIFIER, THE STEAM AND COMPONENTS IN CONTACT WITH THE STEAM ON THE BLOWER PACK CAN BECOME HOT AND CAN BURN IF TOUCHED.

(1) Figure 10 describes the method by which the blower pack distributes the pure clean

steam directly into the space required. It also describes the adjustments that can be made to conform to the specific situation.

WARNING

Figure 8. Steam Distributor Operation

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Figure 9. SAM-e Operation

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Figure 10. Blower Pack Operation and Adjustments

Page 53

3. CONTROLS AND REMOTE COMMUNICATION (OPTIONAL)

A. DIGITAL CONTROL OPERATION

(1) Figure 11 shows the components of the NORTEC Controller and how to adjust the

setpoint.

(2) In the case of a modulating NORTEC Controller, Figure 12 shows the relation between

the difference from setpoint to %rh in the room and the 0-10 V DC demand signal sent out. From this basis the NORTEC Controller uses its PI algorithm to adjust its demand signal in accordance with the history of the environment. This type of control allows for tighter and more precise control.

B. DIGITAL TRANSDUCER OPERATION

(1) The NORTEC digital transducers, shown in Figure 13, are designed to sense humidity

in duct or in room respectively, and report it back to a controller or the NHTC directly. Required humidifier output is determined by controller or humidifier.

C. REMOTE CONNECTIONS (OPTIONAL)

CAUTION

NORTEC DOES NOT RECOMMEND USING THE DRY RELAY CONTACTS WITH ANYTHING MORE THAN 24 VAC, 1 AMP.

(1) The NHTC reports the signal light status, in Table 3, by closing the supplied dry contact

relays which can be wired back to a BMS or monitoring station. This method of monitoring is not as informative as the actual display, but alerts you to the general status of the unit.

Figure 11. NORTEC Digital Controller

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D. NORTEC LINKS 2 OPERATION

(1) NORTEC LINKS 2 is an option that can be integrated with the NHTC. This allows a

BMS to monitor and in the right configuration, control the humidifier. For additional information about NORTEC Links and its operation and configuration, go to

www.humidity.com

(2) Table 5 contains a list of NORTEC LINKS 2 variable definitions. For a complete list,

contact the factory.

E. NORTEC ONLINE OPERATION

(1) NORTEC OnLine is an option that can be integrated with the NHTC. This allows a user

to log onto the internet, go to www.norteconline.com their unit from any computer with an internet connection. (See Figure 14)

(2) After initially logging into the NORTEC OnLine server the user will be presented with a

list of humidifiers currently registered with the Server program. Each humidifier will be listed with a unit type identifier, a serial number and an address descriptor.

(3) By clicking on the humidifier name, the user will then be brought to a status screen with

an image of the selected humidifier.

(4) Figure 14 shows a typical NORTEC OnLine Monitoring Screen. Use this manual in

combination with NORTEC OnLine to be able to monitor and understand the settings possible through the NORTEC OnLine Interface.

and look up the NORTEC LINKS 2 manual.

and log in to allow them to monitor

Figure 12. Difference from Setpoint in

Relation to Demand Signal

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Figure 13. Duct and Wall Mounted

Transducer

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THIS PAGE INTENTIONALLY LEFT BLANK

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10-30

MAINTENANCE

PROCEDURES

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MAINTENANCE PROCEDURES

1. NH ELECTRODE STEAM HUMIDIFIERS

Typical tools required for any maintenance procedure:

- Slotted Screwdriver

- Small Slotted Screwdriver

- Phillips Screwdriver

- Needle-Nose Pliers

- Wrench

A. MAINTENANCE

WARNING

DISCONNECT MAIN POWER BEFORE ANY SERVICING.

WARNING

THE PLUMBING AND ELECTRICAL COMPARTMENTS CONTAIN HIGH VOLTAGE COMPONENTS AND WIRING. ACCESS SHOULD BE LIMITED TO AUTHORIZED PERSONNEL ONLY.

(1) The NHTC and its components are a very low maintenance system. The only

maintenance normally required is to change the cylinder, clean out the drain valve assembly, clean out the inlet valve screen and know the procedure for extended shutdown and start-up.

B. WHEN TO REPLACE THE STEAM CYLINDER

(1) The steam cylinder is disposable and must be replaced at end of cylinder life. Cylinder

life is dependent on water supply conditions and humidifier usage. Failure to replace the cylinder at the end of cylinder life will cause the unit to lock out. NORTEC is not responsible for any damages resulting from, or attributed to, the failure to replace a spent cylinder (see Manufacturer’s Warranty). There are many indications, each of which signifies the end of cylinder life. See 10-20 Operation, Table 4, for details on how the unit functions and determines end of cylinder life.

C. EXTENDED SHUT-DOWN

(1) As long as the NHTC is powered, it will automatically drain the cylinder when there has

not been a call for humidity for an extended period of time. This feature will reduce or prevent the possibility of corrosion of the electrodes and the accumulation of algae and bacteria growing in the cylinder. The cylinder will remain empty until there is a call for humidity at which time the fill valve will open and refill the cylinder. The unit will go through its normal process for optimum operation.

(2) Should it be required to disconnect power to the humidifier for a period of extended

shut-down, always drain the cylinder first. Leave the switch in the OFF position and ‘open’ the main external fused disconnect to stop power to the humidifier. Close the shut-off valve in the water supply line feeding the humidifier.

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D. COMPONENTS OF THE STEAM CYLINDER

(1) Consult Figure 1 for NORTEC cylinder components.

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Figure 1. Cylinder Components

Page 59

E. HOW TO REMOVE THE STEAM CYLINDER

(1) Consult Figure 2 for removal of the steam cylinder.

Figure 2. Cylinder Removal Procedure

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F. MANDATORY CLEANING OF THE DRAIN VALVE

(1) Always clean the drain valve before installing a new cylinder since the valve port may

be as dirty as the used cylinder. Figure 3 describes the process of removing and cleaning the drain valve. Perform paragraph E. before proceeding.

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Figure 3. Drain Valve Maintenance

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G. HOW TO INSTALL THE REPLACEMENT CYLINDER

(1) Consult Figure 4 to install the replacement cylinder.

Figure 4. Cylinder Replacement Procedure

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10-40

TROUBLESHOOTING

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1. TROUBLESHOOTING NH ELECTRODE STEAM HUMIDIFIERS

A. PREPARATION

(1) Ensure the installation detail conform to installation requirements. (2) Understanding the Principle of Operation and the software menus is an asset when

troubleshooting. This information is found in chapter 10-20 Operation and can be elaborated on by your local representative.

(3) When contacting your local representative or NORTEC for troubleshooting assistance,

please ensure the serial number has been obtained for reference purposes.

(4) Whenever the troubleshooting steps indicate a problem with the main pc-board, first

check all connections at the main PCB (including the ribbon cable connections at the center of the main PCB) before ordering replacements.

B. STARTING POINT

(1) Table 1 checkpoints will allow for faster troubleshooting. Ensuring that all these steps

are taken is good practice when beginning to troubleshoot the NH series humidifier. Check your symptom and verify all points before ordering any replacement parts or contacting your local representative. Use the wiring diagram when necessary for clarification.

NOTE

Wiring diagrams on unit supersedes diagrams in this manual.

WARNING

BE AWARE, WHEN TROUBLESHOOTING, THAT THE HUMIDIFIER IS POWERED BY HIGH VOLTAGE AND FAMILIARITY WITH BOTH GOOD PRACTICES AND WIRING OF THE HUMIDIFIER IS RECOMMENDED. ANY TROUBLESHOOTING THAT REQUIRES OPENING THE CABINET SHOULD BE DONE BY QUALIFIED PERSONNEL.

C. NHTC/NHPC

(1) The self-diagnostic system built into the NHTC is continually checking the status of the

electrical circuits to the fill valve, drain valve, primary voltage contactor, high water sensor and steam cylinder. The modulating signals from external humidistat and reduced manual capacity settings are taken into consideration. When problem symptoms are found, the NHTC/NHPC will take self-corrective actions, if applicable. It will, if necessary, respond by shutting itself down. Table 3 describes some of the conditions the NH unit can detect and warn or protect itself against. Table 4 contains a definition of the terms used in this section.

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System What to Check Why

Nothing is happening when the on/off switch is turned on

Table 1. Troubleshooting Symptoms

Main power is on and matches the specified voltage on the specification label.

No, or improper voltage can cause the electronics or components not to respond.

The unit will not fill or fills very slowly (less then 1” per minute)

24 VAC output from the step-down transformer. Check high and low voltage.

Ensure that fuses in the humidifier and on the electronic boards are good. Ensure that 24 VAC is getting to the main board.

Door interlock open. The door interlock has malfunctioned. Water supply is on and water pressure is

between 30 to 80 psig

Unit is getting a demand signal or the unit is producing the required steam capacity. See ensuring demand T able 2.

No leak at drain valve or around cylinder. Check for water coming out of the drain. Check the fill valve inlet.

Check fill valve strainer. Check optional inline filter.

24 VAC is required to power nearly all the components of the humidifier, including the electronics.

The fuses are in place to prevent damage to the electronics. If there was a surge the fuse may have blown to prevent damage to the unit.

The proper water volume and pressure must be available as the valves in the NH unit rely on its pressure to control volume and operation. NORTEC recommends 55 to 60 PSIG.

The unit will not activate the fill valve without a demand for humidity. It will also only fill as necessary once there is a demand. Once it reaches the requested demand, it will stop filling.

The cylinder is held in by gravity and sealed by an O-ring. If not properly seated, it could leak and prevent the unit from filling.

Drain stuck open

Unit will not humidify or is not reaching requested capacity.

Unit has faulted or has a warning

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Pressure in the steam line could also prevent filling causing the water in the fill cup to overflow to drain.

Strainer is clogged.

Fill valve may also be restricted after capturing debris in its filter.

Unit is getting a demand signal. Refer to Table 2.

Capacity is manually limited. The unit will not surpass the capacity

Cylinder is full. The unit will not fill further than a full

Check Table 3, Faults and Warning Codes Each code is identified and each has

Unit will not send power to the cylinder without a demand and safeties met.

dictated by the user in the software.

cylinder. Operation requires it to try to concentrate the conductivity, which may take several hours, before it reaches full capacity.

individual causes and solutions.

Page 65

Table 2. Ensuring A Demand Signal

Check Why and How

Safety Loop (terminal 1 and 2) is closed

Channel 1 has a signal. Whether for on/off or modulating, a voltage potential signal must be present between

Channel 2 has a signal Only applicabl e if configured to accept dual channel input.

The safety loop is checked to ensure that it is safe to operate. Checking to see 24 VAC from terminal 1 to ground, and terminal 2 to ground should indicate whether is closed.

If found to be open, isolate which component in the safety loop is open to solve the issue. If suspect, confirm that it is connected and operating properly.

terminal 3 and 4 for the humidifier temperature.

If on/off there should be 5 VDC.

If VDC modulating, at least 25% of total possible signal must be present.

If mA controlled, at least 25% of total possible signal must be present.

If Transducer signals, the unit setpoint must be higher then the sensed room RH signal.

If VDC modulating, at least 25% of total possible signal must be present.

If mA controlled, at least 25% of total possible signal must be present.

If Transducer signals, the high limit setpoint must be higher than the sensed RH signal.

2. TROUBLESHOOTING DISTRIBUTORS

CAUTION

KEEP IN MIND WHEN TROUBLESHOOTING DISTRIBUTORS THAT THEY ARE BEING USED WITH STEAM AND THEREFORE, ARE AND CAN REMAIN VERY HOT DURING THE TROUBLESHOOTING PROCESS.

A. TROUBLESHOOTING ATMOSPHERIC DISTRIBUTORS

(1) If the distributor is spitting out water, ensure that the distributor is installed level and

check the condensate return for proper slope, check head above the trap, and check the trap that it is clear of obstructions.

(2) If the distributor is condensing inside the duct, make sure the installation clearances

are as indicated in Chapter 10-10 Installation, and make sure that the design conditions have not changed. If over humidification of the duct results, check controls and safeties (ensure safeties are properly installed and functioning).

3. SAM-e TROUBLESHOOTING

A. PROCEDURE

(1) If the SAM-e is spitting out water, ensure that the distributor is installed per instructions

in Chapter 10-10 Installation and check the condensate return for proper slope and trap and that it is clear of obstructions. The condensate return must be the lowest point of the SAM-e header.

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(2) If the SAM-e is condensing inside the duct, make sure that the design conditions have

not changed.

(3) If grommets leak, make sure the tubes are firmly inserted, if cracks or damage are

found, replace grommet.

4. BLOWER PACKS TROUBLESHOOTING

A. PROCEDURE

(1) An optional blower pack (BP), ensure power supplied to blower pack either from

humidifier or other source, if present, gets its primary voltage from inside the humidifier. This way, only one external power source has to be connected to the equipment.

Confirm this power source before troubleshooting the blower pack. (2) Ensure blower pack is installed per Chapter 10-10 Installation. (3) If fans are not functioning, confirm safety is not open. Fans are only ON when steam is

being discharged.

5. DIGITAL ON/OFF HUMIDISTAT SENSOR CALIBRATION

A. PROCEDURE

(1) The humidity sensor is factory calibrated, however, it can be field recalibrated.

(a) The calibration routine can be accessed by pressing and holding down the option

button for five seconds. A new screen will appear with the calibration adjustments. (b) Press the up or down buttons until the text calH appears on the LCD screen. (c) To adjust the calibration press the Option button. The screen should load to

display the current calibration trim. The calibration trim can be adjusted by

pressing the up or down buttons to the desired level and then pressing the option

button to confirm the settings. (d) Press the Power button to return to the normal display.

NOTE

A properly calibrated hygrometer should be used in conjunction with any calibration procedure.

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Table 3. NH System Messages

NHTC Display Message LED state System Action Symptom Diagnosed

E5: Cylinder B Controller missing

E6: Extendet Missing RED Humidifier activates its fault

E7: CPU CRC fault RED Humidifier activates its fault

W11: Safety Loop Open GRN Humidifier goes on standby. O N/OFF controls wired between

W12: Cylinder Max Level NONE Fill valve inte rrupted. Water at top of cylinder.

E12: Cylinder max Level no current

W13: Fill Timeout GRN

RED Humidifier is in standby until

problem corrected.

relay and interrupts its operation until communication is fixed.

relay and interrupts operation.

RED Humidifier activates its fault

relay and interrupts its operation.

The humidifier will attempt to

blink

clear any debris by pulsing the drain valve.

On power up, the controller cannot detect the driver board for cylinder B.

The slave unit is not in communication with the master unit. Master unit powered?

Problem with the processor hardware or software.

terminal 1 and 2 are open.

The high water sensor is activated but no current is measured in cylinder.

The fill valve has been activated for an extended period of time but water has not reached the sensor.

E13: Fill: Timeout RED The fill valve has been activated

for an extended period of time but has not reached the sensor.

W15: Over current YEL The drain is activated to

decrease the water level in the cylinder.

E15: Over Current RED Humidifier interrupts operation

and the fault relay is activated.

W16: Excess Current YEL Humidifier interrupts operation

and the fault relay is activated.

E16: Excess Current RED Humidifier interrupts operation

and the fault relay is activated.

Humidifier stops operation and the fault relay is activated.

Measured current in the cylinder has exceeded 115% of rated output.

Measured current in the cylinder has exceeded 130% of rated output.

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Probable Cause Corrective Action

1. The driver board is damaged.

2. Controller is not configured correctly.

1. The master unit is not configured correctly.

2. Is the RJ12 cable damaged?

3. Is an incorrect RJ12 cable used?

4. J2 ports on driver boards are not connected. The electronics of the main PCB have diagnosed the main

PCB (itself) as defective.

1. Current measurement core loose on driver board?

2. Primary wire not looped through CT core?

3. High water sensor plug is on an electrode pin.

1. Is the drain stuck open?

2. Check system backpressure.

3. Is the water supply closed?

4. Drain leaking?

1. Is the water supply closed?

2. Is the drain leaking?

3. Check the system backpressure.

1. Is the drain blocked?

2. Is the cylinder filling too fast?

3. Was the wrong fill valve supplied?

4. Is there scale in the cylinder?

5. Is the water too conductive?

6. Is the wrong cylinder supplied?

7. Is the cylinder spent?

1. Replace the driver board.

2. Verify that the humidifier is a double unit.

3. Check that the driver board ribbon cable is connected to the main board.

1. Verify configuration settings for the units.

2. Replace the RJ12 cable.

3. Replace with correct cable.

4. Check all connections to the processor board.

Reset humidifier and monitor display. If Error reoccurs within one minute of resetting the unit, the problem is with the main PCB. If the Error is not repeated, the primary power to the unit is suspect.

1. Connect CT core.

2. Interrupt main power and rewire CT core.

3. Install high water plug on shrouded pin.

1. Clean drain valve or replace.

2. Install fill cup extension kit if required.

3. Open water supply.

4. Clean drain valve.

1. Open water supply.

2. Clean drain valve.

3. Clean drain valve or replace.

4. Install fill cup extension kit if required.

1. Clean the drain line.

2. Replace the fill valve.

3. Replace the fill valve.

4. Rinse the cylinder.

5. Change water supply.

6. Install the correct type of cylinder.

7. Replace the cylinder.

1. Is the drain blocked?

2. Is the drain restricted?

3. Is the cylinder filling too fast?

4. Was the wrong fill valve supplied?

5. Is there scale in the cylinder?

6. Is the water too conductive?

7. Was the wrong cylinder supplied?

1. Is the drain blocked?

2. Is the drain restricted?

3. Is the cylinder filling too fast?

4. Was the wrong fill valve supplied?

5. Is there scale in the cylinder?

6. Is the water too conductive?

1. Is the drain blocked?

2. Is the drain restricted?

3. Is the cylinder filling too fast?

4. Was the wrong fill valve supplied?

5. Is there scale in the cylinder?

6. Is the water too conductive?

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1. Clean the drain line.

2. Clean the drain line.

3. Replace the fill valve.

4. Replace the fill valve.

5. Rinse the cylinder.

6. Change the water supply.

7. Install correct cylinder type.

1. Clean the drain line.

2. Clean the drain line.

3. Replace the fill valve.

4. Replace the fill valve.

5. Rinse the cylinder.

6. Change the water supply.

1. Clean the drain line.

2. Clean the drain line.

3. Replace the fill valve.

4. Replace the fill valve.

5. Rinse the cylinder.

6. Change the water supply.

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Table 3. NH System Messages (cont)

NHTC Display Message LED state System Action Symptom Diagnosed

E17: Req off current RED Humidifier interrupts operation

and the fault relay is activated.

W18: Foam YEL System will activate selected

foam algorithm. (See Figure 7.)

E18: Foam RED System will activate selected

foam algorithm. (See Figure 7.)

W19: Cylinder spent YEL T he electronics allow the

cylinder to be reset up to four times before locking out the humidifier.

E19: Cylinder spent YEL, RED Humidifier interrupts operation

and the fault relay is activated.

W20: Conductivity too low YEL Humid ifier will continue to

operate on this water supply.

W23: Control sensor broken YEL Humidifier put on standby. After

a timeout period, this warning becomes a fault.

With no system demand, current is detected in the cylinder.

System has detected foaming and will attempt to self correct if foam mode is active.

Electronics have determined cylinder is spent. Within the next 72 hours the humidifier will stop.

Electronics have determined that the cylinder is spent.

Water conductivity is determined to be less than optimum.

Electronics cannot detect the control RH sensor connected to the humidifier.

E23: Control sensor broken RED Humidifier interrupts operation

and the fault relay is activated.

W24: Limit sensor broken YEL Humidifier put on standby. After

a timeout period, this warning becomes a fault.

E24: Limit sensor broken RED Humidifier interrupts operation

and the fault relay is activated.

W25: 3-day idle drain activated

W26: 3-day forced drain activated

YEL The humidifier drains the

cylinder after three days of inactivity.

YEL The humidifier drains the

cylinder after three days of operation.

Electronics cannot detect the control RH sensor connected to the humidifier.

Electronics cannot detect the limit RH sensor connected to the humidifier.

This safety feature drains standing water.

This customer selected feature drains the cylinder to remove minerals.

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Probable Cause Corrective Action

1. Is the contactor closed but not energized?

2. Does the processor board display capacity output but contactor is open?

1. Back pressure?

2. Organics present in water?

3. Insufficient drain or over concentration.

1. Back pressure?

2. Organics present in water?

3. Insufficient drain or over concentration.

The cylinder must be replaced with the same type and model.

1. Is the drain leaking?

2. Adjust drain factor.

3. Check the system backpressure.

4. Is salt required?

1. Is the sensor powered?

2. Is the sensor wiring correct?

3. Is the sensor defective?

4. Is the RH less than 5%?

1. Is the sensor powered?

2. Is the sensor wiring correct?

3. Is the sensor defective?

4. Is the RH less than 5%?

1. Replace the contactor.

2. Replace the driver board.

1. Verify drain is functioning and clean.

2. Verify steam line installation.

3. Check optional inline filter.

1. Verify drain is functioning and clean.

2. Verify steam line installation.

3. Check optional inline filter. When ordering a new cylinder, quote the model number of

cylinder presently installed in the humidifier or serial number of humidifier.

When ordering a new cylinder, quote the model number presently installed in the humidifier.

1. Clean the drain valve.

2. Set drain factor to 0.7.

3. Install a fill cup extension kit if required.

4. Add one teaspoon of table salt.

1. Use a multimeter to check that the sensor is powered.

2. Verify wiring is correct as per wiring instructions.

3. Replace the sensor.

4. RH values under 5% are interpreted as a broken sensor.

1. Use a multimeter to check that the sensor is powered.

2. Verify wiring is correct as per wiring instructions.

3. Replace the sensor.

4. RH values under 5% are interpreted as a broken sensor.

1. Is the sensor powered?

2. Is the sensor wiring correct?

3. Is the sensor defective?

4. Is the RH less than 5%?

1. Is the sensor powered?

2. Is the sensor wiring correct?

3. Is the sensor defective?

4. Is the RH is less than 5%?

--- To disable this feature, consult the programming manual

1. Use a multimeter to check that the sensor is powered.

2. Verify wiring is correct as per wiring instructions.

3. Replace the sensor.

4. RH values under 5% are interpreted as a broken sensor.

1. Use a multimeter to check that the sensor is powered.

2. Verify wiring is correct as per wiring instructions.

3. Replace the sensor.

4. RH values under 5% are interpreted as a broken sensor.

shipped with the humidifier.

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Table 3. NH System Messages (cont)

NHTC Display Message LED state System Action Symptom Diagnosed

W27: Safety loop instability YEL The safety loop is interrupting

humidifier operation.

A security control is causing the safety loop to switch on and off too rapidly.

W28: demand signal instability YEL The demand signal is swinging

from low demand to high demand too quickly.

W29: limit signal instability YEL The limit signal is swinging from

low demand to high demand too quickly and the humidifier cannot respond.

W30: Modbus remote disable YEL The humidifier is being

controlled via the network, not locally.

W43: Keep warm active YEL This is a customer selectable

feature to keep the cylinder water warm.

W44: Demand signal short cycling

W45: safety loop short cycling YEL The cylinder automatically

W46: RH high warning YEL An alarm indication is

W47: RH low warning YEL The humidifier is operating and

W49: wrong cylinder installed YEL An alarm indication is

E50: Modbus Timeout RED Systems shuts down. Time window for Modbus has elapsed.

YEL The cylinder automatically

reduces the humidifier output to stabilize operation.

generated.

an alarm indication is generated.

generated.

The demand signal is unstable.

The limit signal is unstable.

The humidifier has been disabled by a network message.

The humidifier is in standby mode. The cylinder may energize at any time.

The demand signal is cycling on and off too frequently.

RH levels higher than the limit set have been detected. The humidifier should not be operational with this warning activated.

RH levels lower than the limit set have been detected. The humidifier should be operational with this warning activated.

The cylinder installed is not the recognized type for the humidifier.

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Probable Cause Corrective Action

1. The high limit is too close to the distributor.

2. Is there loose wiring?

3. Are there defective controls?

4. Is the safety high limit set point is too low?

1. The high limit is too close to the distributor.

2. Is the controller defective?

3. Are the P and I settings incorrect?

1. The high limit is located too close to the distributor.

2. Is the controller defective?

3. Are the P and I settings incorrect?

4. Safety high limit set point is set too low.

--- Contact the system administrator to override the remote

--- To disable this feature, consult the programming manual

1. Is the humidifier oversized?

2. Check the sensor location.

3. Are the P and I settings incorrect?

1. Is the humidifier oversized?

2. Is the high limit located too close to the distributor?

3. Are the safety controls damaged?

1. Is the humidifier still operating?

2. Is the humidifier oversized?

1. Relocate high limit 10 feet from the steam distributor.

2. Check all wires at the safety controls.

3. Replace any defective device.

4. Change high limit set point to 85% or more.

1. Relocate high limit 10 feet from the steam distributor.

2. Replace the controller.

3. Adjust the P and I constants.

1. Relocate high limit 10 feet from the steam distributor.

2. Replace the controller.

3. Adjust the P and I constants.

4. Change high limit set point to 85% or more.

command.

shipped with the humidifier.

1. Reduce manual capacity setting by 50%.

2. The sensor should be located away from doors and drafts.

3. Adjust the P and I constants.

1. Reduce manual capacity setting by 50%.

2. Relocate the high limit to 10 feet from the steam distributor.

3. Replace any damaged controls.

1. Verify that the RH setpoint is less than the RH high limit setting.

2. Reduce the manual capacity setting by 50%.

1. Is the humidifier still operational?

2. Is the humidifier oversized?

--- Verify that the replacement cylinder is the same as the old

1. Loose wire.

2. Electronics damaged.

3. Electromagnetic Interference.

1. Verify that the RH setpoint is greater than the RH low limit setting.

2. Set the manual capacity setting to 100%.

3. Add more humidifiers.

cylinder.

1. Verify cables.

2. Replace electronics or contact factory.

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Table 4. Term Definitions

Term Definition

RATED AMPS Re fers to amps listed on the humidifier specification label. SHORT CYCLING When the ‘on time’ of the humidifier is less than ten minutes upon a call for humidity. To correct

short cycling, all humidifiers have a capacity adjustment which allows the output of the humidifier to be reduced as low as 20% of rated output, thus extending the ‘on time’ required to maintain output.

FOAMING This phenomenon can occur in water when the impurities, already in the water, reach an excess

concentration as result of boiling away pure water, and the continued boiling action agitating the contained water. The humidifier electronics are designed to prevent this occurrence, although in extreme cases water will foam with little concentration making it necessary to have the drain time of the water, contained in the cylinder, increased. Foaming is normally caused by short cycling, a restricted drain, or back pressure. The foam generated in these instances, is conductive and may lead to a false full cylinder indication if the level of the foam approaches the top of the cylinder.

BACK PRESSURE This can be caused by restriction of steam flow caused by lo ng steam runs; improperly sloped

steam lines; elbows changing the direction of the steam flow from horizontal to vertical without a drain leg, any plumbing detail allowing the accumulation of condensate; undersized steam line; improper steam distributor; downward air flow onto the distributor creating excess static pressure at the steam outlets; or high static pressure ducts (not probable). To overcome excess static pressure in the duct, a fill cup extension kit should be used. In downflow applications, a downflow distributo r should be used but in some cases the fill cup extension will also be required.

RESET UNIT (HUMIDIFIER)

To reset the humidifier, the ON/OFF switch at the front of the humidifier should be switched to the OFF position for a minimum of five seconds and then switched back to the ON position.

MONITORED LEG Refers to the primary wire to the cylinder which loops through the current sensing device on the

driver PCB. This wire is terminated at the red cylinder plug at the cylinder. Units with six primary wires to the cylinder will monitor only one of the two wires, terminating with red plugs.

CONDENSATE Refers to steam that has condensed to a liquid.

6. 0-10V DIGITAL HUMIDISTAT SENSOR CALIBRATION

A. PROCEDURE

(1) The humidity sensor is factory calibrated, however, it can be field recalibrated. The

calibration routine can be accessed by pressing and holding down the option button for five seconds. A new screen will appear with the calibration adjustments.

(a) Press the up or down buttons until calH appears on the LCD screen. (b) To adjust the calibration press the Option button. The screen should load to

display the current calibration trim.

desired level and then pressing the option button to confirm the settings.

(d) Press the Power button to return to the normal display.

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TECHNICAL

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1. WIRING AND TERMINALS

A. HUMIDIFIER CONTROL INFORMATION

(1) See Figure 7 and Figure 9 in Chapter 10-10 for Controller and Transducer terminal

definitions. See Figure 6 in Chapter 10-10 for low voltage terminal strip terminal definitions.

Table 1. Controller and Sensor Specifications

Power Supply Operating Voltage 24 VAC ± 10%

50/60 Hz Power Consumption Max. 3 VA Internal Rectification Ha lf-wave rectified

Signal Inputs Analog Input

Input Signal Resolution Accuracy

Temperature Input Range

Humidity Input: Range Accuracy Repeatability

Signal Outputs Digital Outputs

Maximum Load

Environment Operation

Temperature Humidity

Housing Materials Cover, back

Mounting Plate

AI1

2-10 VDC

39 mV, 0.078 mA

± 2%

External Thermistor

-40° to 140°C (-40° to 284°F)

0 to 100 %RH

± 3.0% at 25°C (77°F)

± 0.5%

DO1

24 VAC 2A max.

0° to 50°C(32° to 122°F)

<95%RH

Fire proof ABS plastic

Galvanized Steel

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B. NH WIRING

(1) See Figure 1and 2 for the NHTC/NHPC Single and Double Unit Wiring diagrams.

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Figure 1. NHTC/NHPC Double Unit Wiring Diagram

Page 77

Figure 2. NHTC/NHPC Wiring Diagram

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2. CHECK LISTS

A. PRE-NORTEC ONLINE START UP CHECKLIST WIRING

(1) Humidifier-to-Humidifier

Connection:

Each individual Humidifier linked to lead Unit.

(4) Start-Up Procedure:

Ensure power is being supplied to the humidifier and Nortec Online Module.

Connection can be direct or daisy-chained to other units.

(2) Network Connection:

Lead Unit wired to Local Network (Ethernet, GPRS, Dial-up).

Network activity verified.

(3) Controls Wired:

Directly to humidifiers.

B. PRE-NORTEC LINKS START-UP CHECKLIST

(1) Humidifier-to-Humidifier

Connection:

Each individual Humidifier linked to lead Unit.

Connection can be direct or daisy-chained to other units.

(2) Network Connection:

Lead Unit wired to Local BMS. Network activity verified.

(3) Controls Wired:

Directly to humidifiers.

Verify power to NetBiter (Power LED should be lit).

After power-up, verify network communication.

Verify variable operation after mapping is complete.

Perform regular humidifier start-up check.

(4) Start-Up Procedure:

Verify power to NORTEC Links

module.

Verify power to I/O-Controller. Adjust Network address dials to

desired address (BACnet/IP address is preset at factory).

After power-up, verify network

communication.

Map desired network variables to

BMS.

Verify variable operation after

mapping is complete.

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Perform regular humidifier start-

up check.

Page 79

C. HUMIDIFIER MANDATORY PRE-START UP CHECKLIST

Unit Serial #: _________________No. of humidifiers: _______ Tag: _______________ Unit type: _______ __________Voltage: _____V/___ph Steam output: ____lbs/hr Customer/Job: ______________ Address: _____________________________ Inspected by: ________________Date of inspection: ____/____/____

WATER QUALITY:

Well water Conductivity: _______ mhmos Hardness: _____ gr.

HUMIDIFIER MOUNTING:

Clearances around the unit Acceptable Obstruction – Front (door opens freely?) 3 ft min. ______________________ – Top (steam lines) 2 ft min. ______________________ – Bottom (fill, drain, controls) 2 ft min. ______________________ – Right (main pwr) 2 ft min. ______________________

___ City water ___ Softened water ___ RO / DI water ___

STEAM LINES:

– Slope up 2 in. per 12 in. – Slope down 0.500 in. per 12 in. ___ – Traps – Insulated – Length/Size _____/_______

– 90 degree elbows – Can condensate be trapped anywhere in the steam line? yes

WATER LINES:

– 0.050 in. at max 4ft from the unit – Water pressure: 30-80 psig ___ – PVC ___ – Stainless steel ___

DRAIN LINES:

– Air gap located within 3 ft of the unit

CYLINDER:

– Cylinder properly installed and sitting upright

WIRING:

– No loose wires around the unit or on the PC board? yes

___

___ qty: ____ – 45 degree Elbows ___ qty: ____

___– 3/8 in. connection at fill G

CONDENSATE LINES:

– Sloped back to drain – Trapped 2 in. more than static

duct pressure – Size _______ – St ain less steel – ____% Vertical ____% Horizontal

___

___ or plastic ___

___ no ___

___ – Sloped to drain ___ – Size:________

___ no ___

___

CONTROLS:

Installed Location / Wiring /Setting Installed Location / Wiring /Setting – High limit: – Mod controller:

POWER:

– Voltage, amperage rating and fuse correspond to Spec Label: – Disconnect switch located close to humidifier:

___ ____________________ – Air proving: ___ ____________________

___ ________________– Other: ___ ________________________

___

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D. HUMIDIFIER MANDATORY START-UP CHECKLIST AND QUICK REFERENCE

Unit Serial #: _________________No. of humidifiers: _______ Tag: _______________ Unit type: ___________________Voltage: _____V/___ph Steam output: ____lbs/hr Customer/Job: ______________ Address: ______________________________________ Inspected by: ________________Date of inspection: ____/____/____

1. PRELIMINARY:

– Pre-start-up checklist completed? yes

If no, return to Pre-Start-up Checklist before going on with start-up procedure.

2. START-UP PROCEDURE:

The prerequisites for getting power and water into the steam cylinder are as follows: – check that main breaker is on and power is at the unit.

– check that main water shut-off valve is open. – on/off/drain switch must be switched on. – control circuit 1-2 must be made. – modulation humidistat, if present, must be calling. – door interlock switch must be made (interlock switch can be pulled out to operate unit).

___ no ___

The unit will undergo a self-test to ensure integrity of all the components: – NHTC Start-Up Unit Cylinder

– Reading Cylinder Data – Inlet Valve – Drain Valve – Heat Controller – Pump – Bleed Valve – Steam Relay – Service Relay – Error Relay – Operation Relay

It will then start filling the cylinder and begins normal operation. Most water does not contain enough conductivity for full boil on initial start-up. Units will need to concentrate the water over a time period (hours to days).

Remarks:

__________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________ __________________________________________________________________________

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E. PERIODIC MAINTENANCE CHECKLIST AND QUICK REFERENCE (PAGE 1 OF 2)

WHEN TO REPLACE THE CYLINDER:

NHTC/NHPC light indication and LCD display:

1. Yellow and Green light with W19: Cylinder Spent indicates the cylinder must be replaced in the next 72 hours.

2. Red and Yellow light with E19: Cylinder Spent indicates the cylinder is at the end of its life and must be replaced.

CYLINDER REPLACEMENT PROCEDURE:

1. Turn off water supply to unit.

2. Activate drain to completely empty water content (less than 10 minutes)

3. When drained, stop drain and turn off unit.

4. Also open the main electrical disconnect switch and open plumbing.

5. Remove the cylinder plugs by pulling vertically. The plugs are press-fitted over the electrode pins protruding from the top of the cylinder.

6. Using a slotted screwdriver, loosen the steam line clamp(s) and pull steam line off the cylinder vertically.

7. Using a small slotted screwdriver, depress tab on the re-usable cable tie, if present, around the middle of the cylinder. This will loosen the cable tie to come apart for reuse later on.

8. The cylinder is now ready to be removed from the unit.

CAUTION: Cylinder and any remaining water might still be HOT.

9. Always clean the drain valve before installing a new cylinder. (see further below)

10. Remove the used cylinder and replace by a new one. Do not re-use cylinder.

MANDATORY CLEANING OF THE DRAIN VALVE

1. Note that ring terminal for drain valve green ground wire is sandwiched between drain valve body and drain pan.

2. Remove two screws securing drain valve body to drain pan. Disconnect the two slip-on terminals from the two tabs on the (24 VAC) drain valve coil.

3. Remove hose clip and hose connection from drain valve body.

4. Drain valve assembly is now free to be taken to a sink for disassembly and cleaning.

Important: Tapered end of spring must be installed toward the solenoid.

5. Clean out the end of the hose, and then reconnect it to the drain valve body with the clamp.

6. Fit mounting screws through drain valve body, one through ring terminal on green ground wire.

WARNING: To prevent the possibility of electrical shock the green ground wire must be

reinstalled before power is restored. Push the two slip-on terminals back onto the two tabs on the coil. The terminals, although not identical, are reversible.

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E. PERIODIC MAINTENANCE CHECKLIST AND QUICK REFERENCE (PAGE 2 OF 2)

HOW TO INSTALL THE REPLACEMENT CYLINDER

1. Reverse procedure should be followed to install new cylinder. Main disconnect is to be left open until cylinder is completely installed and reconnected.

2. Ensure that the re-usable cable tie a nd mounting brackets, within the unit, secure the cylinder properly.

3. The cylinder plug wires are colour-coded in accordance with coloured dots beside the electrode pins on top of the cylinder.

4. This colour coding must be adhered to when replacing cylinder plugs on pins.

5. With cylinders having six primary vo ltage cylinder plugs, it should be noted that there are two of each colour.

6. Care must be taken so that cylinder leads of the same color are always directly opposite each other as indicated by the dot formation on the top of the cylinder.

7. The white cylinder plug on all units is for the high water sensor electrode, which always goes on the single pin surrounded by a plastic shoulder.

8. Ensure that cylinder plugs fit snugly on the pins.

9. If cylinder plugs become loose, it is best to obtain a new replacement plug. Consult factory.

EXTENDED SHUTDOWN:

1. Before disconnecting power to the humidifier for a period of extended shutdown, ALWAYS DRAIN the cylinder first.

2. ‘Open’ the main external fused disconnect to stop power to the humidifier.

3. Close the shut-off valve in the water supply line feeding the humidifier.

ACCESS SHOULD BE LIMITED TO AUTHORIZED PERSONNEL ONLY.

4. NHTC 3 day drain: As long as the NHTC is powered, it will automatically drain the cylinder when there has not been a call for humidity for an extended period of time.

5. The cylinder will remain empty until there is a call for humidity at which time the fill valve will open and refill the cylinder.

This feature will reduce the possibility of corrosion of the electrodes and the possible accumulation of algae and bacteria growing in the cylinder.

Remarks:

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3. SPARE PARTS AND EXPLODED VIEWS

A. ASD, BSD, CSD DISTRIBUTOR

(1) See Figure 3 for the ASD, BSD, CSD Distributor exploded view and spare parts.

Figure 3. Distributor Exploded View and Spare Parts

B. SAM-e SPARE PARTS

(1) See Figure 4 for the SAM-e exploded view and spare parts.

Figure 4. SAM-e Exploded View and Spare Parts

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C. NH SERIES HUMIDIFIER SPARE PARTS

(1) See Figure 5 for the NHTC/NHPC plumbing compartment exploded view and spare

parts and Table 2 for the parts list. See Figure 6 for the NHTC/NHPC electrical compartment exploded view and spare parts and Table 3 for the parts list.

Figure 5. NHTC/NHPC Plumbing Compartment Exploded View and Spare Parts

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Table 2. NHTC/NHPC Plumbing Part List

SINGLE PHASE THREE PHASE

550-600/3 440-480/3 380/3 220-240/3 208/3 550-600/3 440-480/3 380/3 220-240/3 208/3 550-600/3 440-480/3 380/3 220-240/3 208/3 550-600/3 440-480/3 380/3 220-240/3 208/3 550-600/3 440-480/3 380/3 220-240/3 208/3 550-600/3 440-480/3 380/3 220-240/3 208/3 550-600/3 440-480/3 380/3 220-240/3 208/3 550-600/1 440-481/1 380/1 277/1 220-240/1 208/1 550-600/1 440-480/1 380/1 227/1 220-240/1 208/1

110-120 VOLTS/PH

PART NO.

MODEL 005 010 020 020 030 050 075 100 150 200

DESCRIPTION NORTEC

CYLINDER 201 X 150-9724

CYLINDER 202 X 150-9725 1 111

CYLINDER 203 X 150-9726 1

CYLINDER 204 X 150-9727 11

CYLINDER 321 X 150-9732 111

CYLINDER 305 X 150-9729 1

CYLINDER 309 X 150-9730 11

CYLINDER 311 X 150-9731 111

CYLINDER 303 X 150-9728 11

CYLINDER 331 X 150-9733

CYLINDER 333 X 150-9734

CYLINDER 421 X 150-9738 11

CYLINDER 407 X 150-9736 1

CYLINDER 411 X 150-9737 11

CYLINDER 621 X 150-9744 11 11 11 22 22

CYLINDER 603 X 150-9739 11122

CYLINDER 607 X 150-9741 11 11 1 22 2

CYLINDER 605 X 150-9740 12

CYLINDER 609 X 150-9742

CYLINDER 617 X 150-9743

CYLINDER 631 X 150-9745

CYLINDER 636 X 150-97462STEAM OUTLET, LARGE, NHTC ONLY 150-9465 1111111111111112222222222

STEAM OUTLET, SMALL, NHTC ONLY 150-9466 111111111111111111111113CLAMP FOR SMALL STEAM LINE 132-5007 2 2222222222222222222222

CLAMP FOR LARGE STEAM LINE 132-5009 2222222222222224444444444

NO.

ITEM

4 DRAIN CHANNEL 111-6857 1 11111111111111111111111111111111111112222222222

5 DRAIN CHANNEL GASKET 163-1026 1 11111111111111111111111111111111111112222222222

FILL CUP ASSEMBLY SMALL 252-2406 11111111111111111111111

FILL CUP ASSEMBLY LARGE 252-2407 1111111111111112222222222

SMALL STEAM LINE 0.875 IN. ID 9.000 IN. 132-8810 1111111

SMALL STEAM LINE 0.875 IN. ID 5.000 IN. 132-8810 11111111111

6 VALVE DRAIN 93BEIGE + 24V COIL 145-6000 111111111111111111111111111111111111112222222222

7 CYLINDER BRACKET 150-9593 111111111111111111111111111111111111112222222222

SMALL STEAM LINE 0.875 IN. ID 4.500 IN. 132-8820 11111

LARGE STEAM LINE 1.500 IN. ID 7.000 IN. 132-8820 1111111111111112222222222

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Table 2. NHTC/NHPC Plumbing Part List (cont)

SINGLE PHASE THREE PHASE

440-480/1 380/1 227/1 220-240/1 208/1

110-120 VOLTS/PH

PART NO.

MODEL 005 010 020 020 030 050 075 100 150 200

DESCRIPTION NORTEC

NO.

ITEM

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VALVE, SINGLE FILL, 0.5 L/min 131-3244 1 11111111111111111

VALVE, SINGLE FILL, 1.2 L/min 135-3017 11111

VALVE, SINGLE FILL, 2.0 L/min 135-3032 1111111111 22222

VALVE, SINGLE FILL, 3.3L/min 135-3037 11111 22222

150-6288 1 11111111111111111111111111111111111112222222222

-1/2"NPT

CABLE TIE REUSABLE 1-400 CYL SZ 151-3003 1 1111111111111111111111

CABLE TIE REUSABLE 5-600 CYL SZ 151-3005 1111111111111112222222222

CYL PLUG WITH BLACK MARKER 151-0046 1 11111111111111111111112221122211 22144422 442

CYL PLUG WITH YELLOW MARKER 151-0049 111112221122211 22144422 442

11 GASKET FOR FILL THRU CAB 145-5000 1 11111111111111111111111111111111111112222222222

12 FITTING BRASS 3/4 BSP / WASHER

150-4150 1 11111111111111111111111111111111111112222222222

132-4264 22 44

132-4265 22 44

CYL PLUG WITH RED MARKER 151-0047 1 11111111111111111111112221122211 22144422 442

CYLINDER PLUG 5MM 15A (HWS)

MODIFIED

SUPER PLUG /W WIRE WITH BLACK

MARKER

SUPER PLUG /W WIRE WITH YELLOW

MARKER

132-4266 22 44

SUPER PLUG W/ WIRE WITH RED

MARKER

WALL BRACKET 5-30 LBS 145-7020 1 1111111111111111111111

WALL BRACKET 50-100 LBS 145-7022 111111111111111

WALL BRACKET 150-200 LBS 145-7023 1111111111

FILL CUP EXTENSION KIT

FOAM DETECTION OPTION

OPTIONAL COMPONENTS

FLOAT ASSEMBLY, FOAM DETECTION 252-3334 1 11111111111111111111111111111111111112222222222

DRAIN WATER COOLING

VALVE, DUAL FILL, 3.3 L/min, 0.5 L/min 150-9698 111111111111111111

VALVE, DUAL FILL, 3.3 L/min, 1.2 L/min 11111

VALVE, DUAL FILL, 3.3 L/min, 2.0 L/min 1111111111 22222

FILLCUP EXTENSION KIT NHTC/NHPC 252-2160 1 11111111111111111111111111111111111112222222222

VALVE, DUAL FILL, 3.3 L/min, 3.3L/min 11111 22222

Page 87

Figure 6. NHTC/NHPC Electrical Compartment Exploded View and Spare Parts

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Table 3. NHTC/NHPC Electrical Parts List

SINGLE PHASE THREE PHASE

110-120 VOLTS/PH

PART NO.

MODEL 005 010 020 020 030 050 075 100 150 200

DESCRIPTION NORTEC

NO.

ITEM

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CONTACTOR 30 AMP 1PH 145-3013 1 111111 111

CONTACTOR 30 AMP 3PH 132-3013 11111 11122211 2 1 2 4 2 4

CONTACTOR 40 AMP 3PH 132-3014 111 11 22 1 2 144 2 4 2

CONTACTOR 62 AMP 3PH 132-3015 22 1 44

TERMINAL BLOCK 3 POLE 95 AMP 132-3027 111111111111111 1111 111 11 1

TERMINAL BLOCK 3 POLE 150 AMP 132-3028 1111111

TERM. BLOCK 3 POLE 310 AMPU 132-3030 111

2 TERMINAL BLOCK 2 POLE 95A 132-3001 1111111111111

3 GROUND CLAMP 132-3020 1 11111111111111111111111111111111111111111111111

TRANSFORMER 208 24V 75VA 132-3208 1 1 11111

TRANSFORMER 240/24 VAC 75 VA 132-3230 1 1 11111

TRANSFORMER 277/24V 75VA 132-3277 11

TRANSFORMER 380/24V 75VA 132-3380 1 111111

TRANSFORMER 480/24 VAC 75 VA 132-3460 1 111111

TRANSFORMER 600/24 VAC 75 VA 132-3575 1 111111

TX 24VAC 150VA, PRIMARY 208 252-2318 11

4 TRANSFORMER 120/24 VAC 75 VA 142-3110 1

252-1278 111111111111111111111111111111111111112222222222

Only Use for NHTC 005

PCB DRIVER NHPC, NHTC INCL.

PCB DRIVER FOR NHTC 005 120V

TX 24VAC 150VA, PRIMARY 240 252-2319 11

TX 24VAC 150VA, PRIMARY 480 252-2320 11

TX 24VAC 150VA, PRIMARY 600 252-2321 11

TX 24VAC 150VA, PRIMARY 380 252-2322 11

5 PCB FAULT REMOTE (OPTION) 252-1279

ELECTRICITY CONVERTER

PCB PROCESSOR NHTC 252-1277 1 11111111111111111111111111111111111111111111111

ELECTRICITY CONVERTER

6 PCB PROCESSOR NHPC (NOT SHOWN) 252-1274 111111111111111111111111111111111111111111111111

7 PCB DRIVER NHPC, NHTC INCL.

8 SWITCH, ROCKER, DPST 252-2489 111111111111111111111111111111111111111111111111

CABLE RIBBON 40 PIN NHTC/NHPC 252-2061 1 11111111111111111111111111111111111112222222222

CABLE RIBBON 10 PIN NHTC FAULT 252-2062 111111111111111111111111111111111111112222222222

CABLE EPROM SMALL 252-2033 11111111111111111111111

CABLE EPROM LARGE 252-2037 1111111111111111111111111

9 SWITCH SPST 208-240V 147-3010 111111111111111111111111111111111111111111111111

10 SWITCH INTERLOCK IDM 423 132-3091 1 11111111111111111111111111111111111111111111111

NOT SHOWN

CABLE EPROM DOUBLE 252-2060 1111111111

Page 89

Table 3. NHTC/NHPC Electrical Parts List (cont)

SINGLE PHASE THREE PHASE

440-480/1 380/1 227/1 220-240/1 208/1

110-120 VOLTS/PH

PART NO.

DESCRIPTION NORTEC

NO.

ITEM

MODEL 005 010 020 020 030 050 075 100 150 200

142-3176 66 1212

150-9692 612

142-3173 612

142-3160 66612

OPTIONAL COMPONENTS

PRIMARY FUSE JJN60(JLL N60)

(OPTIONAL)

PRIMARY FUSE JJN50(JLL N50)

(OPTIONAL)

PRIMARY FUSE JJN40 JLLN40

(OPTIONAL)

PRIMARY FUSE JJS40 (JLLS40)

(OPTIONAL)

150-9693 66

150-9694 6

PRIMARY FUSE JJS50 (JLLS50)

(OPTIONAL)

PRIMARY FUSE JJS60 (JLLS60)

(OPTIONAL)

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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 produ cts 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.

Page 92

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

CYLINDER #

Cylinder Replacement Date (MM/DD/YYYY)

U.S.A. Walter Meier (Climate USA) Inc.

826 Proctor Avenue Ogdensburg, NY 13669 TEL: 1-866-NORTEC-1 EMAIL: northamerica.climate@waltermeier.com WEBSITE: www.humidity.com

CANADA Walter Meier (Climate Canada) Ltd.

2740 Fenton Road Ottawa, ON K1T 3T7 TEL: 1-866-NORTEC-1 FAX: (613) 822-7964

Authorized Agent: