Nortec Industries NHRS Series User's Manual

NHRS
Series
TM
RESISTIVE ELEMENT
STEAM HUMIDIFIER
Engineering Manual
Manual No. H-104
2008-02-18
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 extent 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..
COPYRIGHT NOTICE
Copyright 2008, WALTER MEIER LTD. All rights reserved.
RECORD OF REVISIONS
For each revision, put the revised pages in your manual and discard the superseded pages. Write 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
2008-02-18
Revision
Date
Date Put
In Manual
By
Revision
Number
Revision
Date
Date Put
In Manual
By
TABLE OF CONTENTS
Subject
Page
10-00 INTRODUCTION
1.
PRINCIPLE OF OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
10-10 HUMIDITY, STEAM ABSORPTION & DISTRIBUTION
1.
A.
B.
C.
D.
2.
A.
B.
C.
D.
E.
F.
3.
4.
5.
6.
A.
B.
C.
D.
7.
A.
B.
CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
STANDARD CONTROLLERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
FULLY INTEGRATED MODULATION ADAPTER . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SIGNAL BY OTHER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
VARIABLE AIR VOLUME(VAV) CONTROL SYSTEM . . . . . . . . . . . . . . . . . . . . . . . . 3
STANDARD FEATURES AND BENEFITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
INTEGRAL DRAIN WATER COOLER (DWC) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
TWO-LINE ALPHANUMERIC LIQUID CRYSTAL DISPLAY (LCD) . . . . . . . . . . . . . . 3
AUTOMATIC SYSTEMS TEST. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
AUTOMATIC END OF SEASON DRAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
AUTOMATIC DETECTION, RESPONSE, AND SYSTEM MESSAGES. . . . . . . . . . . 3
SIMPLE INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
ELECTRICAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
CLEARANCES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
WATER REQUIREMENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
STEAM DISTRIBUTION AND ABSORPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
IN-DUCT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
OUTSIDE DUCT INSTALLATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
VERTICAL IN-DUCT INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
DRAIN WATER COOLING OPTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
BLOWER PACKS (BOBP, RMBP. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
BLOWER PACKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
PRIMARY VOLTAGE CONNECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
10-20 SPECIFICATION
1.
A.
B.
C.
2.
A.
B.
C.
D.
E.
F.
G.
H.
I.
J.
HUMIDIFIERS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PRODUCTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
EXECUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
ACCESSORIES / OPTIONS AVAILABLE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
HUMIDISTAT WITH INTEGRAL SENSOR AND CONTROLLER. . . . . . . . . . . . . . . . 6
HUMIDISTAT WITHOUT INTEGRAL SENSOR . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
STEAM DISTRIBUTORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
REMOTE MOUNTED BLOWER PACKS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SHORT ABORPTION MANIFOLDS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
ON/OFF CONTROLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
SSR COOLING KIT. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
KEEP WARM OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
REMOTE FAULT INDICATION PACKAGE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
NORTEC LINKS OPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
WARRANTY
2008-02-18
LIST OF FIGURES
Figure
Page
10-00 INTRODUCTION
Figure 1.
NHRS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
10-10 HUMIDITY, STEAM ABSORPTION & DISTRIBUTION
Figure 1.
Figure 2.
Figure 3.
Figure 4.
Figure 5.
Display Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
NHRS Physical Data - 010-090. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
NHRS Physical Data - 135-180. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
RMBP Physical Data Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Remote Mounted Blower Pack . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
LIST OF TABLES
Table
Page
10-10 HUMIDITY, STEAM ABSORPTION & DISTRIBUTION
Table 1.
2008-02-18
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
THIS PAGE INTENTIONALLY LEFT BLANK
2008-02-18
10-00
INTRODUCTION
10-00
Page 1
2008-02-18
1. PRINCIPLE OF OPERATION
(1) The NORTEC NHRS uses an advanced control system to monitor and maintain
optimum operating conditions within the humidifier cylinder.
(2) The NHRS humidifier operates on Potable, DI (De-ionized), or RO (Reverse
osmosis) water supply. All components are suitable for DI/RO water operation as a
standard.
(3) When the unit is activated in the ON position, and there is a call for humidity, the tank
will fill with water through the fill cup located, in the back of the unit.
(4) The water level is being sensed by the float chamber. It contains a dual magnetic
float assembly to ensure accurate water level is maintained in the cylinder. Three
LEDs on the float chamber indicate the water level.
(5) The bottom red LED is the security level to ensure water is above the heating
elements. The middle green light is the optimum operational level for the heating
elements. The top yellow light is the maximum water level. The float chamber
distinguishes 5 different water levels between the red LED and the yellow LED. The
micro-computer can respond to fluctuations in water level to schedule draining and
filling of the cylinder without affecting the steam generating process.
(6) At start up, the floats rise in the float chamber, the internal micro-computer evaluates
the rise of each float to ensure it is equal. This way, the system ensures the fill valve
is functioning properly and that both floats are operational. When the water level
reaches the top indication level, the system will flush the water down to the green
LED. This ensures correct operation of the drain pump and reading of the floats by
the micro-computer
(7) Then, relying on feedback from the signal received by the humidifier, the internal
controller will ensure operation of the contactors to power heating elements.
10-00
Page 2
2008-02-18
Figure 1. NHRS
10-00
Page 3
2008-02-02
THIS PAGE ITENTIONALLY LEFT BLANK
10-00
Page 4
2008-02-18
10-10
HUMIDITY, STEAM
ABSORPTION &
DISTRIBUTION
10-10
Page 1
2008-02-18
1. CONTROLS
A. STANDARD CONTROLLERS
(1)
NORTEC has a wide range of modulation packages for use with the NHRS
humidifiers. The packages all provide humidity controllers complete with point for
accuracy up to ±3%. For accuracy up to ±1% a high precision humidistat is
required.
B. FULLY INTEGRATED MODULATION ADAPTER
(1)
The NORTEC NHRS includes all the circuitry necessary to accept a modulating
signal from most modulating humidity controllers with a set point supplied by
others. This allows the unit to easily interface with a Building Automation System.
(2)
For more accuracy, the set-point is controlled at the humidifier and the integrated
controller can accept a direct transducer signal. The accuracy of the humidifier to
changing conditions will be dependant on the accuracy of the signal.
C. SIGNAL BY OTHER
(1)
When modulating humidity controllers or transducer signals are supplied by others,
the NHRS humidifier can accommodate most standard signals, including:
(a)
(b)
(c)
(d)
(e)
(f)
0-10 vdc
2-10 vdc
0-5 vdc
1-5 vdc
0-20 mA
4-20 mA
Figure 1. Display Panel
10-10
Page 2
2008-02-18
D. VARIABLE AIR VOLUME (VAV) CONTROL SYSTEM
(1)
NORTEC offers several VAV control packages where VAV or variable duct
temperature, air flow or humidity conditions require additional control flexibility.
2. STANDARD FEATURES AND BENEFITS
(1) NORTEC NHRS humidifiers can be suited for all humidity control applications.
Resistive heating elements satisfy controller requirements instantaneously for rapid
control with minimum deviation. NHRS units produce pure atmospheric clean steam
on Potable, DI, or RO water operation. Fully variable steam output from 0 to 100%
of capacity is achieved by electronic power control of the resistive heating elements.
When using with deionized water(<20 micromhos) the NHRS with SSR option can
control relative humidity to ± 1%. The unique design of the stainless steel cylinder
ensures the process is not affected by water fill cycles.
A. INTEGRAL DRAIN WATER COOLER (DWC)
(1) NHRS has a standard internal Drain Water Cooler to meet plumbing codes by
tempering the drain water below 140°F (60°C) during normal operation.
B. TWO-LINE ALPHANUMERIC LIQUID CRYSTAL DISPLAY (LCD)
(1)
The NORTEC NHRS has a two line display, which provides important operating
data using text for system messages and numbers. Operating status, performance
data and defined parameters can be accessed and displayed. Its principle
language is English, but the NHRS can display in French, on the user level.
C. AUTOMATIC SYSTEMS TEST
(1)
Each time a NORTEC NHRS humidifier is started, it automatically undergoes a
self-test. It checks the correct operation of the PC board and other components
including the fill valve and drain pump. The humidifier will display system faults
with the alphanumeric display and the indicator lights.
D. AUTOMATIC END OF SEASON DRAIN
(1)
After 3 days of no call for humidity the steam production tank will completely drain
the cylinder and automatically restart upon a call for humidity. Does not apply if
keep warm feature is activated.
E. AUTOMATIC DETECTION, RESPONSE, AND SYSTEM MESSAGES
(1)
Operation is monitored continuously by an automatic check program. When
unacceptable deviations from normal operation are detected (such as no water
entering humidifier or, improper water level), the NHRS responds by taking
appropriate action. Corresponding system messages are displayed on the LCD.
By identifying the specific service messages, troubleshooting is simplified and
problems external to the unit are more easily diagnosed. For non-critical service
messages, the NHRS continues to operate and displays a service message on the
LCD and illuminates the yellow light.
F. SIMPLE INSTALLATION
(1) The compact construction of the NHRS allows for a simple installation. The NHRS
comes standard with key hole mounting locations, and is ready for field connection.
10-10
Page 3
2008-02-18
3. ELECTRICAL
(1)
Humidifiers require field wiring to the primary voltage terminal block. Power and
fusing requirements are as indicated on the Specification label. Wiring is fed
through an electrical knockout in the bottom back of the electrical cabinet.
4. CLEARANCES
(1)
The clearance dimensions shown in the manual are for reference only and are the
minimum requirements for maintenance of the humidifier.
5. WATER REQUIREMENTS
(1)
The NHRS will operate properly on all potable water sources. De-mineralized
water supplies such as Reverse Osmosis and De-Ionized water will reduce
maintenance intervals significantly.
6. STEAM DISTRIBUTION AND ABSORPTION
(1)
The NHRS can be used with stainless steel distributors or SAM-e manifolds for
short absorption distance.
(2)
The distance between the humidifier and the steam distribution system should not
exceed 15 feet for accurate humidity control.
(3)
Refer to the Steam Distribution Engineering Manual (Form #XX-232) or the
H.E.L.P. software.
10-10
Page 4
2008-02-18
Table 1. Technical Data
NHRS Model
/ Capacity
(lbs/hr)
VOLTAGE
PHASE
RATED
AMPS
RATED K.W.
MAX. EXT.
CIRCUIT
PROTECTION
010 [11.25]
010 [11.25]
010 [11.25]
010 [11.25]
208
230
460
575
1
1
1
1
18.39
15.94
7.97
6.38
3.83
3.83
3.83
3.83
25
20
15
15
015
015
015
015
208
230
460
575
1
1
1
1
24.52
21.25
10.63
8.50
5.10
5.10
5.10
5.10
35
30
15
15
020 [22.5]
020 [22.5]
020 [22.5]
020 [22.5]
208
230
460
575
1
1
1
1
36.78
31.88
15.94
12.75
7.65
7.65
7.65
7.65
50
40
20
20
030
030
030
030
208
230
460
575
1
1
1
1
49.04
42.50
21.25
17.00
10.20
10.20
10.20
10.20
70
60
30
20
030 [33.75]
030 [33.75]
030 [33.75]
030 [33.75]
208
230
460
575
3
3
3
3
31.89
27.64
13.82
11.05
11.48
11.48
11.48
11.48
40
35
20
15
045
045
045
045
208
230
460
575
3
3
3
3
42.52
36.85
18.42
14.74
15.30
15.30
15.30
15.30
60
50
25
20
065 [67.5]
065 [67.5]
065 [67.5]
065 [67.5]
208
220-240
460
575
3
3
3
3
6379
55.28
27.64
22.11
22.98
22.98
22.95
22.95
80
70
35
30
090
090
460
575
3
3
36.85
29.48
30.60
30.60
50
40
135
135
460
575
3
3
55.27
44.22
45.90
45.90
70
60
180
180
460
575
3
3
73.70
58.96
61.20
61.20
100
80
10-10
Page 5
2008-02-18
Figure 2. NHRS Physical Data – 010-090
10-10
Page 6
2008-02-18
Figure 3. NHRS Physical Data – 135-180
10-10
Page 7
2008-02-18
Figure 4. RMBP Physical Data Dimensions
10-10
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2008-02-18
10-20
SPECIFICATION
10-20
Page 1
2008-02-18
1. HUMIDIFIERS
A. GENERAL
(1)
Work Included
(a)
(b)
(c)
(2)
NORTEC NHRS Resistive Element steam humidifier[s] as indicated on
drawing[s] and as indicated on schedule[s].
Complete and operable humidification system [which meets applicable
building codes].
Equipment start-up and project inspection by qualified factory trained
representative.
Quality Assurance
(a)
(3)
Manufacturer: For each product specified, provide components by same
manufacturer throughout.
(b) Electrical Components, Devices, and Accessories: Listed and labeled as
defined in NFPA 70, Article 100, by a testing agency acceptable to authority
having jurisdiction, and marked for intended use.
(c) Comply with ARI 640, “Standard for Commercial and Industrial Humidifiers.”
(d) Products shall be supported with a warranty that ensures the product will be
free from defects in materials and workmanship for a period of two years after
shipment.
(e) Commissioning of a system or systems specified in this section is part of the
construction process. Documentation and testing of these systems, as well
as training of the Owner’s operation and maintenance personnel, is required
in cooperation with the Commissioning Authority. Project Closeout is
dependent on successful completion of all commissioning procedures,
documentation, and issue closure. Refer to Project Closeout, Section 01700,
for substantial completion details. Refer to Section 01810, Commissioning,
for detailed commissioning requirements.
(f)
Products specified below are to be manufactured is an ISO 9001-2000
certified facility.
Submittals
(a)
(b)
(c)
(d)
(e)
(f)
Submit product data under provisions of Section 15010. Include product
description, model, dimensions, component sizes, rough-in requirements,
service sizes, and finishes. Include rated capacities, operating weights,
furnished specialties, and accessories.
Submit manufacturer’s installation instructions.
Submit operation and maintenance data.
Submit coordination drawings. Detail fabrication and installation of
humidifiers. Include piping details, plans, elevations, sections, details of
components, and dispersion tubes. Detail humidifiers and adjacent
equipment. Show support locations, type of support, weight on each support,
and required clearances.
Submit wiring diagrams including power, signal, and control wiring.
Differentiate between manufacturer-installed and field-installed wiring.
Submit minimum water quality requirements and water pressure
requirements.
10-20
Page 2
2008-02-18
(4)
Extra Material
(a)
(5)
References
(a)
(6)
Furnish extra materials described below that match products installed and
that are packaged with protective covering for storage and identified with
labels describing contents.
ANSI/NFPA 70 - National Electrical Code.
Coordination
(a)
Coordinate location and installation of humidifiers in ducts and air-handling
units. Revise locations and elevations to suit field conditions and to ensure
proper humidifier operation.
XXXXX OR XXXXX
(a)
Coordinate location and installation of humidifier in the space it serves with
the electrical, mechanical, and plumbing contractors.
B. PRODUCTS
(1)
10-20
Page 3
2008-02-18
RESISTIVE STEAM HUMIDIFICATION SYSTEM NORTEC MODEL NHRS
(a)
Packaged unit, wall mounted, electric steam generating system, suitable for
use with potable, De-Ionized (DI), and Reverse Osmosis (RO) water. UL
Listed
(b)
Methods of distribution require a steam distributor[s] or Short Absorption
Manifold [s] [SAM-e] for mounting into AHU/duct[s] or Remote Mounted
Blower Pack[s] [RMBP] for direct space applications [refer to options
schedule].
(c)
Includes stainless steel tank and fill through plastic base to control water
stratification by filling at the bottom. Top filling is not acceptable.
(i)
Incoloy based resistive heating elements are used to produce steam.
Steam production is fully variable from 0 to 100%.
(ii)
Control accuracy of up to ±1% using DI/RO water, optional SSR control,
and precise humidistat on all models.
(iii)
Keypad programming to configure monitor and control humidifier with
information messages on alphanumeric LCD display.
(iv)
Unit water level is to be continuously monitored with a dual magnetic
electronic float system, located outside of the boiling water to ensure
accurate water level control and reduced maintenance. Cool fill water is
to be supplied into the sensing chamber to keep the device cool.
Systems using conductivity probes or floats located within hot reservoir
water are not acceptable.
(v)
Self-diagnostics during start-up of system to prevent unsafe operation
on the unit(s).
(vi)
Fill valve check.
(vii) Float level check.
(viii) Drain pump check.
(c)
(ix)
Dual signal status light indicates unit operation.
(x)
Cabinet has powder coated paint finish with removable door to allow the
user full front access.
(xi)
Plumbing door interlock safety switch.
Factory mounted, alpha numeric, Liquid Crystal Display (LCD) provides full
operational status. Display to include a keypad for user interface and
adjustment of operational parameters including:
(i)
Unit output (lbs/hr or kg/hr).
(ii)
Control demand status.
(iii)
Relative humidity display when using transducer input(s).
(iv)
Humidity set-point adjustment when using transducer input(s).
(v)
Controller configuration (Proportional band and Integral) when using
transducer input(s).
(vi)
Control type configuration on/off or full modulation when demand
signal(s), or transducer input(s) are provided.
(vii) Language setting: English, French.
(viii) Fault indication using text. Code cross-reference not acceptable.
(ix)
Manual capacity output adjustment range of 10-100%.
(x)
Option for BACnet, LonWorks, Johnson N2 or Modbus interface for
monitoring and control from a Building Management System (BMS).
(xi)
Standard of acceptance: NORTEC NHRS.
(xii) UL Listed.
C. EXECUTION
1.
2.
EXAMINATION
(a)
Examine ducts, air-handling units, and conditions for compliance with
requirements for installation tolerances and other conditions affecting
performance.
(b)
Examine roughing-in for piping systems to verify actual locations of piping
connections before humidifier installation.
(c)
Proceed with installation only after unsatisfactory conditions have been
corrected.
INSTALLATION
(a)
Install humidifiers and steam dispersion panels per manufacturers’
instructions.
10-20
Page 4
2008-02-18
3.
(b)
Seal humidifier dispersion-tube duct penetrations with flange.
(c)
Install with required clearance for service and maintenance.
TESTING
(a)
System verification testing is part of the commissioning process. Verification
testing shall be performed by the Contractor and witnessed and documented
by the Commissioning Authority. Refer to section 01810, Commissioning, for
system verification tests and commissioning requirements.
XXXXX OR XXXXX
(b)
3.
Manufacturer’s Field Service: Engage a factory-authorized service
representative to inspect field-assembled components and equipment
installation, including piping and electrical connections. Report results in
writing.
(i)
Leak Test: After installation, charge system and test for leaks. Repair
leaks and retest until no leaks exist.
(ii)
Operational Test: After electrical circuitry has been energized, start
units to confirm proper unit operation. Remove malfunctioning units,
replace with new units, and retest.
(iii)
Test and adjust controls and safeties. Replace damaged and
malfunctioning controls and equipment.
TRAINING
(a)
Training of the Owner’s operation and maintenance personnel is required in
cooperation with the Commissioning Authority. Provide competent, factory
authorized personnel to provide instruction to operation and maintenance
personnel concerning the location, operation, and troubleshooting of the
installed systems. The instruction shall be scheduled in coordination with the
Commissioning Authority after submission and approval of formal training
plans. Refer to System Demonstrations, section 01670, for contractor
training requirements.
XXXXX OR XXXXX
(b)
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2008-02-18
Engage a factory-authorized service representative to train Owner’s
maintenance personnel to adjust, operate, and maintain humidifiers.
(i)
Train Owner’s maintenance personnel on procedures and schedules for
starting and stopping, troubleshooting, servicing, and maintaining
equipment and schedules.
(ii)
Review data in maintenance manuals. Refer to Division 1 Section
“Contract Closeout.”
(iii)
Review data in maintenance manuals. Refer to Division 1 Section
“Operation and Maintenance Data.”
(iv)
Schedule training with Owner, through Architect, with at least seven
days advance notice.
2. ACCESSORIES / OPTIONS AVAILABLE
A. NHRS UNIT CONFIGURATION OPTIONS
(1) Solid State Relay option provides the highest level of relative humidity control
available. With de-ionized water and high precision control the Solid State Relay
option is capable of maintaining ±1% relative humidity control. For ordering
information see H.E.L.P. software or contact factory.
(2)
253-0626 – NHRS Cooling Kit is used for applications with an ambient temperature
exceeding 95ºF (35ºC) to provide additional cooling of the Solid State Relays. The
NHRS Cooling Kit does not apply if Solid State Relays are not present.
(3)
253-3179 – Scale Management Option for potable water collects scale debris in a
scale collection tank below the steam cylinder. Minor maintenance of the
humidifier consists of draining the scale collection tank when the Scale
management option is ordered. This option eliminates steam cylinder removal
during minor maintenance.
B. HUMIDISTAT WITH INTEGRAL SENSOR AND CONTROLLER (up to ±3% RH
Control)
(1) 151-0142 - Modulating 0-10 Vdc wall mounted, P + I control humidistat with setpoint
range of 0-100% RH. Connects directly to the low voltage terminal strip via 3 wires
(shielded if run exceeds 10 m) and accurately controls RH in a zone or space. Can
be used with remote sensors. Time proportioning control not acceptable.
(2) 252-0266 - Modulating 0-10 Vdc duct mounted, P + I control humidistat with setpoint
range of 0-100% RH. Connects directly to the low voltage terminal strip via 3 wires
(shielded if run exceeds 10 m) and accurately controls RH in a zone or space. Can
be used as a control humidistat if placed in return air or as high limit if placed in
supply. Time proportioning control not acceptable.
C. MODULATING TRANSDUCER
(1)
1509858 – 2-10 VDC wall sensor with digital display, controlled through the
humidifier via the LCD display, the sensor can accurately read relative humidity
set-points between 0-100%. The digital display will show the current space
condition along with the magnitude of the transducer signal being sent to the
humidifier.
(2)
1509857 – 2-10 VDC duct sensor with digital display, controlled through the
humidifier via the LCD display, the sensor can accurately read relative humidity
set-points between 0-100%. The digital display will show the current space
condition along with the magnitude of the transducer signal being sent to the
humidifier.
D. STEAM DISTRIBUTORS
(1)
Allows for direct introduction (injection) of steam into a duct system or Air Handling
Unit. Steam Distributor(s) are selected based upon capacity and duct width.
Atmospheric distributors are used with NHRS humidifiers. They are designed to
operate at atmospheric steam pressure. All steam distributor tubes are made of
stainless steel and are adjustable for horizontal or vertical applications.
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2008-02-18
E. BLOWER PACK
(1)
Wall mounted direct steam distribution system allows for direct space/room
humidification when steam introduction into a ducted system is not feasible. The
factory assembled remote mounted blower pack includes an integral steam
distributor, 3 direct drive fans.
F. SHORT ABSORPTION MANIFOLDS
(1)
This distribution system will allow a short absorption distance to be obtained.
Refer to SAM-e Engineering Manual Form #XX-247.
G. ON / OFF CONTROLS
(1)
252-0259 – Humidistat, on/off, control or high limit, wall mounted. Standard with
internal integrated humidity sensor and digital display. Adjustment range 0-100%
relative humidity with ±3% relative humidity control. Can be calibrated in the field.
(2)
132-9203 - Air Proving Switch, on/off, duct mounted, pressure differential switch,
adjustable set point from 0.07 IWC to 12.0 IWC, good for positive, negative or
differential pressure applications, stops humidifier if duct air pressure is not
sensed. Turns humidifier off if air handler fails.
(3)
252-0273 - Humidistat, on/off, control or high limit, duct mounted. Standard with
external duct mounted humidity control. Can be calibrated in the field.
G. SSR COOLING KIT
(1)
253-0620 - This kit is used for applications where ambient temperature exceeds
95ºF (35ºC). Provides additional cooling for the Solid State Relays for exceptional
conditions.
H. KEEP WARM OPTION
(1)
I.
150-4561 - This feature allows the water temperature in the tank to be maintained
at 160ºF (70ºC) for quick response from the unit upon a call for humidity.
REMOTE FAULT INDICATION PACKAGE
(1)
150-8069 - This option provides four relays to monitor the humidifier remotely.
Relays are:
(i)
Steam Production
(ii)
Unit fault
(iii)
Service / Maintenance
(iv)
Unit on
All relays are BMS ready.
J. NORTEC LINKS 2 OPTION
(1)
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2008-02-18
This option provides monitoring and controlling of the humidifier from a BMS
(Building Management System) using the industries leading communication
protocols. BACnet, LonWorks, Johnson N2 or Modbus. Simply specify what
operating protocol you are using at time or order. OnLine capabilities are standard.
The OnLine service must be ordered.
WARRANTY
(1) WALTER MEIER INC. and/or WALTER MEIER LTD. (hereinafter collectively referred
to as THE COMPANY), warrant for a period of two years after installation or 30 months
from manufacturer’s ship date, whichever date is earlier, that THE COMPANY’s
manufactured and assembled products, not otherwise expressly warranted (with the
exception of the cylinder), are free from defects in material and workmanship. No
warranty is made against corrosion, deterioration, or suitability of substituted materials
used as a result of compliance with government regulations.
(2) THE COMPANY’s obligations and liabilities under this warranty are limited to furnishing
replacement parts to the customer, F.O.B. THE COMPANY’s factory, providing the
defective part(s) is returned freight prepaid by the customer. Parts used for repairs are
warranted for the balance of the term of the warranty on the original humidifier or
90 days, whichever is longer.
(3) The warranties set forth herein are in lieu of all other warranties expressed or implied
by law. No liability whatsoever shall be attached to THE COMPANY until said products
have been paid for in full and then said liability shall be limited to the original purchase
price for the product. Any further warranty must be in writing, signed by an officer of
THE COMPANY.
(4) THE COMPANY’s limited warranty on accessories, not of the companies manufacture,
such as controls, humidistats, pumps, etc. is limited to the warranty of the original
equipment manufacturer from date of original shipment of humidifier.
(5) THE COMPANY makes no warranty and assumes no liability unless the equipment is
installed in strict accordance with a copy of the catalog and installation manual in effect
at the date of purchase and by a contractor approved by THE COMPANY to install
such equipment.
(6) THE COMPANY makes no warranty and assumes no liability whatsoever for
consequential damage or damage resulting directly from misapplication, incorrect
sizing or lack of proper maintenance of the equipment.
(7) THE COMPANY retains the right to change the design, specification and performance
criteria of its products without notice or obligation.
U.S.A.
Walter Meier (Climate USA) Inc.
CANADA
Walter Meier (Climate Canada) Ltd.
826 Proctor Avenue
Ogdensburg, NY 13669
TEL: 1-866-NORTEC-1
EMAIL: northamerica.climate@waltermeier.com
WEBSITE: www.humidity.com
2740 Fenton Road
Ottawa, ON K1T 3T7
TEL: 1-866-NORTEC-1
FAX: (613) 822-7964
Authorized Agent:
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