Nortec NH User Manual 2
NH
TM
Series
Outdoor
ELECTRODE
STEAM HUMIDIFIER
Out door Model
Inst allation Manual
2531550-B
PROPRIETARY NOTICE
This document and the information disclosed herein are proprietary data of W alter Meier. Neither this
document nor the information contained herein shall be reproduced used, or disclosed to others
without the written authorization of Walter Meier, except to the extent required for installation or
maintenance of recipient’s equipment. All references to the NORTEC name should be taken as
referring to Walter Meier (Climate USA) Inc. and Walter Meier (Climate Canada) Ltd.
LIABILITY NOTICE
Walter Meier does not accept any liability for installations of humidity equipment installed by
unqualified personnel or the use of parts/component s/equipment that are not authorized or approved
by Walter Meier.
COPYRIGHT NOTICE
Copyright 2008, Walter Meier (Climate USA) Inc. and Walter Meier (Climate Canada) Ltd. All rights
reserved.
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For each revision, put the revised pages in your manual and disca rd the superseded pages.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
Page Number Date Put
In Manual By
Revision
Number
Revision
Date
Date Put
In Manual By
2008-10-01
TABLE OF CONTENTS
Subject Page
10-00 INTRODUCTION
1. PREINSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
A. ABOUT THIS GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
B. RECEIVING AND UNPACKING EQUIPMENT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
2. PACKAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
A. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
B. HUMIDIFIER SKID . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
C. DISTRIBUTOR BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2
D. ACCESSORIES BOX . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3
3. PREINSTALLATION EQUIPMENT VERIFICATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
A. EQUIPMENT VERIFICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
B. MOVING AND HANDLING THE HUMIDIFIER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
10-10 INSTALLATION PROCEDURES
1. HUMIDIFIER INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
A. LOCATION & MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
B. AIR HANDLING MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
C. CURB MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
D. WALL MOUNTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
E. ELECTRICAL INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
F. WATER SUPPLY LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
G. DRAINL LINE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
H. AUXILIARY DRAINS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
I. STEAM LINES. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
2. IMPORTANT INFORMATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
A. GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
B. HEATER AND FAN SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
C. FREEZE PROTECTION SYSTEM (OPTIONAL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
D. SERVICING ELECTRODE STEAM CYCLINDER. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
E. SERVICING NHRS WITH SCALE MANAGEMENT SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
F. CLEANING DUST AND POLLEN DEPOSITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
G. RESTARTING AFTER FREEZING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
3. OPERATION AND ADDITIONAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
A. OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
B. ADDITIONAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
4. WEATHER DESIGN DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
A. WEATHER DATA . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
10-20 TECHNICAL
1. SPARE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
10-30 WIRING DIAGRAMS
1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .31
WARRANTY
2008-10-01
LIST OF FIGURES
Figure Page
10-00 INTRODUCTION
Figure 1. Humidifier . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 2. Distributor Box Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
Figure 3. SAM-e Distributor Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Figure 4. Remote Mounted Blower Pack Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4
10-10 INSTALLATION PROCEDURES
Figure 1. Recommended Clearances and Curb Dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Figure 2. Typical Air Handling Unit Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Figure 3. Typical Rooftop Curb Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Figure 4. Typical Wall Mount Installation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Figure 5. Normally Open / Normally Closed Valve Arrangement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Figure 6. 3-Way Valve Arrangement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
10-20 TECHNICAL
Figure 1. NHRS Outdoor Exploded View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28
Figure 2. NHTC Oudoor Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .29
LIST OF TABLES
Table Page
10-10 INSTALLATION PROCEDURES
Table 1. Weather Design Data. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
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10-00
INTRODUCTION
10-00
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1. PRE-INSTALLATION
A.
ABOUT THIS GUIDE
(1) This guide is intended as a supplement for the NH Series Installation Guide.
The NH Series Installation guide is included with all NH Series humidifiers and
contains information on installation, operation, and maintenance that applies to
both indoor and outdoor models. This guide contains supplementary information
that pertains specifically to the NH Series Outdoor humidifiers.
(2) For information on the installation of controls, interior piping, interior wiring,
distribution systems please refer to the NH Series Installation Guide.
(3)
The operation and control of the NH Outdoor Series is identical to the indoor
series. Please refer to the NH Series Installation guide for information on operating
your humidifier.
(4)
The maintenance items described in this guide are specific to the outdoor model
and must be performed IN ADDITION to the regular maintenance that an indoor
model would require. Please refer to the NH Series Installation guide for other
regular maintenance items.
B. 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 SKID
(1) Typically the NH Series Outdoor Humidifier ships on a skid (shown in Figure 1).
Controls and accessories are shipped separately in a box. The contents of the box
will be listed on the outside of the box.
C.
DISTRIBUTOR BOX
(1) Depending on the equipment ordered any of the following distributor box
configurations may be received:
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10-00
Page 2
(a) For equipment received if an ASD, BSD, CSD distributor(s) is ordered refer to
Figure 2.
(b) For equipment received if a SAM-e distributor is ordered refer to Figure 3.
(c)
For equipment received if a RMBP is ordered refer to Figure 4.
D.
ACCESSORIES BOX
(1) Additional accessories such as drain water coolers and filters 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.
10-00
Page 3
2008-10-01
Figure 1. Humidifier
Figure 2. Distributor Box Contents
Figure 3. SAM-e Distributor Box
Figure 4. Blower Pack Box Contents
10-00
Page 4
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3. PRE-INSTALLATION
A. EQUIPMENT VERIFICATION
(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 is described in Chapter 10-10.
B. MOVING AND HANDLING THE HUMIDIFIER
(1) The NH Outdoor Series humidifier is bolted to a shipping skid for easy
transportation. While still attached the skid, the humidifier can be lifted to a rooftop
or other location using a forklift or crane. The unit can also be positioned for wall
mounting using a forklift as long as the skid is attached, although it may be easier
to manually lift the unit onto its wall brackets. Installation on a curb requires guide
lifting of the unit. Observe the following precautions when moving and positioning
the humidifier:
(a) When lifting by crane, ensure that the unit is protected from physical damage
by the tethers and lifting equipment.
(b) When lifting by forklift, ensure that unit is properly balanced and secured to
prevent tipping.
(c) Use proper lifting techniques when manually lifting. Often several people will
be required to lift the unit.
(d) Remove the cabinet doors before manually lifting the unit.
(e) Ensure that the humidifier is the proper model, capacity, and voltage for the
specific location.
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10-00
Page 6
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10-10
INSTALLATION
PROCEDURES
10-10
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1.
HUMIDIFIER INSTALLATION
A.
LOCATION AND MOUNTING
(1) NH Outdoor Series humidifiers are UL listed for outdoor installation and come
complete with internal cooling for the electronics. An internal heater is standard
and ensures the enclosure remains at proper operating temperatures.
Additionally, a freeze protection system is available for use in cold climates.
(2) The NH Outdoor Series humidifiers can be mounted on an air handler, on an
appropriately sized curb, or on a wall or vertical surface. The clearance
dimensions shown in this guide are for reference only and are the minimum
required for maintenance of the humidifier. Local and National Codes should be
consulted prior to final location and installation of the humidifier. NORTEC cannot
accept responsibility for installation code violations. The minimum required
maintenance clearances are shown in Figure 1.
(3) Humidifiers typically operate in the cold winter months. As a result they should be
located where it is safe and convenient for maintenance personnel to service the
unit. This is essential as it may be less desirable to service the unit during
inclement weather. The warranty does NOT cover damage resulting to humidifier
as a result of neglect or freezing. NH Outdoor series should NOT be installed on a
rooftop in severe climates or where temperatures reach below 14°F (-10°C).
Please refer to Table 1: Weather Design Data in this document.
(4)
It is also important to consider the length and location of the humidifier steam line
that will result from the installation. Consult section 10-10 in the NH Series Indoor
Installation guide for further information on steam lines.
B. AIR HANDLER MOUNTING
(1) The NH outdoor series features provisions for hanging on brackets (supplied).
This allows the unit to be mounted directly to a vertical wall on an air handler unit.
This installation is advantageous since the steam piping is shorter, and hence the
condensate losses and backpressure are minimized. Typical air handler
installations are shown in Figure 2. Additionally, observe the following precautions
when installing the humidifier:
(a) Ensure that the surface selected to mount the humidifier is structurally sound
and capable of supporting the entire weight of the humidifier when in
operation.
(b) For minimum required maintenance clearances see Figure 1.
(c) Wall mounting bracket provided should be securely attached horizontally with
open edge upwards, using field-supplied fasteners.
(d) Using proper lifting techniques, lift the humidifier onto the brackets to mount
it. Several people may be required to lift the unit.
(e) Ensure that both the bracket and humidifier are mounted level.
(f) Do not store or use gasoline or other flammable vapors and liquids in the
vicinity of the humidifier.
10-10
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2008-10-01
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