Nortec Industries Mh Series Users Manual

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Evaporative
Humidifier/Cooler
The sustainable solution for
humidifying and cooling

MH
Series

™

The NORTEC MH humidifier is the
most cost-effective humidifier/cooler
available today.

data centers
laboratories
manufacturing
institutional
research facilities
commercial
automotive

Productivity and quality of life are directly affected by
the indoor environment. People work better and feel
better in favorable surroundings. So do products and
machines! They all respond in various ways to changes
in air quality, temperature and humidity. All three
elements must be just right to maximize performance
and reliability, both in humans and equipment. Correct
humidity is critical, since too much humidity can be as
destructive as too little.
Walter Meier is a world leader in state-of-the-art
humidification technology. Our focus is concentrated
exclusively on designing and building better humidification
systems. Every NORTEC MH model has been engineered
to meet the highest standards of cost-effective efficient
performance. They are designed for ease of installation,
adaptability, simplicity of operation, ease of maintenance
and servicing, energy efficiency, cleanliness and longterm reliability.
NORTEC MH evaporative humidifiers offer complete
application flexibility to systems engineers, contractors
and customers. They can be integrated into central air
handling units or ventilation ducts.
With its stingy energy consumption the MH Series is a
perfect compliment towards Green/LEED building design.

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operating advantages

▶▶ High humidification efficiency
▶▶ Hygiene friendly
▶▶ Free evaporative cooling
▶▶ Safe polyester media
▶▶ Complete packaged system

Economy
The V-Profile polyester media intensifies the
evaporation process providing exceptionally high
performance and efficiency. The large surface of
the evaporation media results in a high evaporation
rate with low energy consumption. The MH Series
offers humidification efficiencies of up to 85 and
95%. The MH Series is suitable for high duty
applications and when applying the Reflow model,
the system captures the non-evaporated water and
returns it to the water circulation system for reuse.
The increased water efficiency has a very quick
payback for building owners.
Saving water and energy as well as reducing
operating costs is an important challenge in today’s
world. The NORTEC MH Series not only humidifies
but can cool the air by up to 22ºF (12.5ºC) at high
humidification efficiency and at a low cost.

Energy Cost for 1000 lbs./hr based on technology
$35
$30
$25
$20
$34.40
$15
$10
$10.57

$5
$0

$7.17
$2.22

Electric

Boiler
steam

Natural
gas

$0.20

$0.06

Compressed High pressure Nortec MH
air & water
water
evaporative

3

technology

V-profile Media
The core element of the MH unit is the patented
humidifier box located in the air duct. Dry air
flows through the box, water flows over the
hygroscopic media and the extremely large wet
surface releases humidity to the air. This method
enables air humidifying or cooling with limited
electrical energy. The V-profile humidifier box
consists of synthetic media with an impressed
V-profile which enables a more intensive
exchange of air and water.

MH
Series

▶▶ Hygroscopic Coating
▶▶ High Velocity Performance
▶▶ Low Pressure Losses
▶▶ UL 900 Class 1 Rating
▶▶ Suitable for DI/RO
▶▶ No Droplets, Free of Aerosols

™

Evaporative
Humidifiers

Total Control (TC) System
The TC system offers the most complete control
of any evaporative humidifier / cooler on the
market today! The integrated processor with
real-time clock controls the air humidity, smart
water management featuring UV treatment and
conductivity monitoring, plus advanced hygiene
cycles and staging operations.

4

▶▶ Smart Water Management
▶▶ Advanced Hygiene Control
▶▶ Internet Monitoring & Control
▶▶ BMS Interoperability
▶▶ Full Function Operating Panel
▶▶ NRTL-C Approved

•

Direct Water System

•

•
•

Models

Total Control (TC) System with Full Backlit Display

The Nortec MH Series is available in two basic
versions. The flow model with direct water drainage
and the REflow model for water recirculation.
Whether to use a flow or REflow system depends
considerably on the primary application of humidifying
or cooling and the supplied water quality.

On/Off control system

•

Smart Water Management System
Adjustable Flush Cycles
Pre-cleaning Sequence
Smart Media Box Drying
Modbus BMS host protocol
Programmable Maintenance Settings
Step-Control 1, 2 or 3 Stage
Multi-Unit Networking
Display and Control of RH
Multiple Control Signal Acceptance
Operation History Log
Real Time Information
Adjustable Capacity of Nominal Output
Remote Fault Indication
Stainless Steel Reservoir
Stainless Side frames
V-Profile Polyester Media
Mist Eliminator V-Profile Polyester Media (above 750 fpm)
2 Year Limited Warranty *Excluding Media

•
•
•
•
•
•

MHTC REflow

•

Circulation Water System

MHB REflow

MHTC Flow

Operates on DI/RO, Potable, Soften Water

MHB Flow

Features Comparison

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º

º
º

Conductivity Smart Monitoring
Ultra Violet Water Treatment

º

Nortec LINKS BMS Interoperability BACnet, Lon Talk, Modbus

º
º

Nortec OnLine - Internet Monitoring and Control

•

º

º
= standard

º
º

= optional

Ultra Violet Sterilization
The REflow model contains a circulation pump that
conveys the water via EPDM plastic hose to the spray
beam located above the humidifier box. The water
then trickles vertically through the boxes. The water
not needed for humidifying flows back into the water
basin where it is collected and recuirculated for
optimal water efficiency.
In the FLOW model, the water is not collected in the
water basin, but is discarded and flows directly into
the drain.

For applications where higher hygienic requirements must be met an optional UV
package is available. The ultra violet radiation from the discharge lamp sterilizes the
water and controls potential microbial build up. Both Flow and REflow models can
be fully equipped.

Conductivity Monitoring
Conductivity monitoring will continuously check the Total Dissolved Solid (TDS)
content inside the water tank. The adjustable conductivity sensor then initiates
drains accordingly. This feature is available for the REflow models only.

Controls
Nortec offers a wide range of digital controls when selecting the MH product.
The total controller allows easy integration into any local building management
system with it’s host protocol modbus. See Nortec LINKS2 and Online for other
communication options.

5

options

Bringing Tomorrow’s
Humidifier Support to You...
Today!

NORTEC LINKS 2
NORTEC LINKS 2 offers advanced monitoring and
control allowing the MH units to communicate to
your local Building Management System (BMS)
via BACnet MSTP or IP, LonWorks, or Modbus
protocols. LINKS2 also provides internet ready
monitoring and control (consult factory).

NORTEC OnLine
By adding the NORTEC OnLine option you get
direct factory support with its proactive data
acquisition which allows the system to suggest
maintenance programs and recognize problematic
symptoms before there is any trouble, helping
to minimize potential downtime. Emails are
automatically sent to the linked parties if there
is any sign of abnormal conditions, specifying the
unit information and functional status (consult
factory).

6

Customer

www.nortecOnLine.com
Communication through the internet or email.

NORTEC Humidifier

NORTEC Technical Services

technical data

Specification
Media Box Efficiency max.

85% and 95%

Maximum Face Velocity over Media

750 fpm (3.8 m/s)

Maximum Face Velocity with Integral Mist Eliminator

1080 fpm (5.5 m/s)

Pressure Drop at 500 fpm

0.25 IWC (62 Pa)

Fire Protection Rating

UL 900 Class I

Power supply pump (REflow, REflow C, REflow SC)

120 VAC/1, 50 and 60 Hz

Power consumption

0.2 - 0.6 kw

Water supply pressure

30 - 145 psi

Unit Height

26” (650mm) - 130” (3300mm)

Unit Width

24” (610mm) - 130” (3300mm)

Unit Depth

30” (575mm)

Standards and guidelines

UL 900 Class 1 and NRTL Approval

installation features & requirements
Pre-assembled hydraulic package for quick installation
Only three connections to be made- water, drain and electrical
REflow pump model powered by a 120 V 1phase 60Hz connection
Stainless steel water tank and lateral supports
Media boxes can be installed in seconds
Footprint not to exceed 3” top and 2” side clearance from AHU/duct wall

performance

Nortec MH Pressure Drop

Nortec MH Humidification Efficiency
100

1.40
Pressure Drop (lWC)

Efficiency (%)

90
80
70
60
50

100

200

300

400

500 600 700
Face Velocity (fpm)

Media 8 inch depth

800

900

1000 1100

Media 12 inch depth

1.05
0.70
0.35
0

100

200

300

400

500 600 700
Face Velocity (fpm)

800

900

1000 1100

Media 8 inch depth
Media 12 inch depth
Mist Eliminator 4 inch depth (necessary for velocity > 748 fpm)
Mist Eliminator 8 inch depth (necessary for velocity > 885 fpm)

7

Form 09-460
Printed on Recycled Paper
Printed in Canada

U.S.A.
Walter Meier (Climate USA) Inc.
826 Proctor Avenue
Ogdensburg, NY 13669
CANADA
Walter Meier (Climate Canada) Ltd.
2740 Fenton Road
Ottawa, Ontario K1T 3T7
1.866.NORTEC1
613.822.7964
email: northamerica.climate@waltermeier.com
WEBSITE: www.humidity.com
Tel:
Fax:

www.norteconline.com
www.nortecparts.com

Certificate No. 002419



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