nor-tec GS Series User manual

Designed for air handling
systems and for areas
requiring individual
humidification control
GS
Series™
Gas Steam
Humidifiers

NORTEC GS Series – the next
generation of gas steam humidifiers.
commercial offices
schools and universities
museums
printing
laboratories
libraries
manufacturing plants
AxAir NORTEC specializes in the design and production
of superior humidification systems. It’s all we do!
Our future depends on our ability to understand the
needs of all our customers. We create the most
appropriate solutions to their specific needs in the
most efficient way. To this end, we draw upon our
extensive experience to develop an ever-growing
range of products that will provide our customers with
maximum reliability, minimum maintenance and a
choice of energy sources.
The NORTEC GS Series product line is no exception.
Every unit has a built-in modular stainless steel heat
exchanger – its flat surfaces ensure easy cleaning
and its proven design ensures reliable operation in all
water conditions. The control system is powered by
a 120V or 208-240V single phase electrical supply.
Each humidifier is built to operate with a normal
potable cold water source, RO (reverse osmosis), or
DI (De-mineralized) water as a standard. GS Series
products are manufactured in Nortec’s ISO 9001-2001
registered facility. Your AxAir NORTEC representative
can provide details.
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Economy
NORTEC GS Series Gas Steam humidifiers
provide clean steam humidification at an
economical operating cost. Units are packaged
in a powder coated cabinet for zero clearance
space requirement while offering high efficiency
output. They can be controlled from either a local
humidistat, from the central building management
system or multiple units can be staged together.
The combustion system utilizes a modulating
forced draft combustion air blower, a negative
pressure regulator gas valve and a 100% premix
burner. On a call for humidity, the combustion
air blower starts creating a negative pressure
across the valve orifice located at the air inlet.
The hot surface ignitor then energizes. The gas
valve opens and the regulated gas/air mixture is
forced through the burner ports and is ignited.
Easy Maintenance
The compact stainless steel heat exchanger has
large flat surfaces to minimize scale buildup
in the humidifier tank. Scale tends to fall off
the exchanger wall to the bottom of the tank,
maintaining efficient heat transfer to the water and
extending the intervals between cleanings. The
smooth stainless steel surface of the tank and
removeable heat exchanger are easily cleaned and
maintained.
The GS SERIES compact heat exchanger design
provides a minimum footprint area where space
requirement is an issue.
operating advantages
Compact removeable heat exchanger.
105 lbs/hr of clean steam.
$/year
Operating costs based an electric cost of $0.08 per kWh, natural gas cost
$0.75 per therm, full output for 2,000 hours per season. Efficiency of
electric unit is 97% and efficiency of gas unit is 82%. Costs do not include
electric peak demand charges.
Annual
savings
with gas
$
3,658
0
1000
2000
3000
4000
5000
6000
Electric
$
5,443
Gas
$
1,784
Annual Operating Cost of
Natural Gas Humidifier vs Electric Humidifier
100 lbs/hr (45 kg/hr)
3

technology
GS
Series™
Gas Steam
Humidifiers
The new generation of GS Series Gas Steam humidifiers gives you more than economical operation. It’s the most versatile
gas humidifier available in the industry. When natural gas or propane is your preferred energy choice, the new GS Series gives
you the options!!! This new humidifier employs a state of the art controller giving networking capability to your engineer and
superior interconnection capabilities. It provides venting and steam distribution flexibility to contractor allowing fast and easy
installation in retrofit or new applications. The integrated troubleshooting guide, smart drain water tempering and pre-cleaning
sequence ensures fast servicing and efficient operation in all conditions.
GS OUTDOOR
ENCLOSURE
GSTC 100
Low emission gas appliance
Capacity up to 630 lbs/hr with a single unit
Nortec Total Controller
Modbus host protocol
Easy to use scroll down menus
Stagged modulation of up to 10 units
Advanced scale management system with
pre-cleaning sequence
Heavy-duty drain pump for scale removal
Full modulation to 25 lbs/hr (11 kg/hr)
for all capacities
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•
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Produces clean, uncontaminated steam
Multiple venting options for easy installation
All components suitable for RO/DI water
Compact flat surface heat exchanger
Internal water tempering for drain water cooling
360º gas burner technology
All service connection outside the cabinet ready
for field connection
Fully insulated tank for efficient operation
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The GSTC has a built-in microcomputer with a full size
display that provides instantaneous updating of all
operating parameters. The unit accepts a modulation
control signal from a BAS varying its output to
meet capacity demand. Models feature a capacity
adjustment of output down to 25 lbs/hr.
The GSP uses status lamps on the front to provide
operating diagnostics. The GSP model can accept a
modulating control signal from building management
systems.
GSTC
GS OUTDOOR
ENCLOSURE GSP
5
Features Comparison
GSTC
GSP
Steam Capacity adjustment •
Full size alphanumeric display and keypad •
Total Controller with Modbus host protocol •
Transducer signal acceptance •
Individual component diagnostic capability •
Keypad set-point adjustment(humidity) •
Display of relative humidity •
Low and high relative humidity alarms •
Adjustable drain with no call for humidity •
Keep warm feature •
Networking capability up to 10 units •
Pre-cleaning sequence •
Troubleshooting Guide •
Self diagnostic capabilities •
Fault history •
Smart drain water cooling •
On/off cycling prevention •
Full tank blowdown capability via timer or external trigger • •
Board mounted display for fault and demand indication
not req.
•
Parameter change through jumper settings
keypad
•
Remote fault indication • •
Single or Dual modulation signal acceptance • •
Industry standard modulation signal acceptance • •
Time to next maintenance alarm • •
Internal Drain water cooler • •
System demand indication • •
Output display • •
Precise five level water level indication • •
Status indicator lamps • •
Backlit display • •
B or BH venting options • •
BH stack vent (outdoor only) •
Large Side tank cleaning port • •
Top access cleaning (300, 400, 500 & 600 lb models) • •
Single water connections • •
Turn-down ratio from maximum output to 25lbs/hr(11kg/hr) • •
Time proportioning below 25lbs/hr(11kg/hr) • •
120V or 208-240V power supply • •
Freeze protection • •
Integral enclosure (outdoor only) •
Nortec Links Building Management System capable using BACnet
or LonWorks N2 protocols º º
Nortec OnLine for web based monitoring and control º
Sealed combustion / Direct vent º º
Floor stand º º
Distribution Systems
Short Absorption Manifold SAM-e º º
Steam distributor º º
Blower pack º º
• = standard º = optional

options
Steam Distributor
Systems
Nortec offers flexible steam distribution choices
to satisfy a wide range of requirements:
Stainless Steel Steam Distributors to
distribute atmospheric steam into ducts.
Independant Blower Packs for in space
applications (remote mounted).
SAM-e Short Absorption Manifold for use
in air handlers or ducts where short steam
absorption distance is critical.
•
•
•
NORTEC OnLine
NORTEC OnLine is a remote interactive
communication package that allows satellite
contacts to monitor, maintain and control
a humidification center from any location
worldwide using standard internet connections.
This advanced software shows graphic
representations of the humidifier and its key
parameters (up to 75 functions).
NORTEC LINKS
NORTEC Links offers monitoring and control
allowing humidifier(s) to communicate to your
Building Management System (BMS). The
controller is factory installed and is located
internally to the humidifier. Simply specify at
time of order what operating protocol you are
using – BACnet IP, BACnet MSTP, LonWorks or
Jonhson N2.
www.nortecOnLine.com
NORTEC Humidifier
Customer
NORTEC Technical Services
Communication through the internet or email.
Atmospheric steam distributor
SAM-e Short Absorption Manifold
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Blower pack

SPECIFICATION GS 100 GS 200 GS 300 GS 400 GS 500 GS 600
Capacity: lbs/hr 25-105 25-210 25-315 25-420 25-525 25-630
Capacity: kg/hr 11-47 11-95 11-143 11-191 11-238 11-286
Input BTU/hr max 140,000 280,000 420,000 560,000 700,000 840,000
Input kJ/hr max 41 82 124 165 206 247
Flue Emissions Low CO (<10ppm) and NOx (<40ppm)
Unit rated Amps 4 6 8 10 12 14
Voltage/Phase 120V/1 120V/1 120V/1 120V/1 120V/1 120V/1
Unit rated Amps 2 3 4 5 6 7
Voltage/Phase 208-240/1 208-240/1 208-240/1 208-240/1 208-240/1 208-240/1
technical data
INSTALLATION FEATURES & REQUIREMENTS
Single point cabinet door fastening for easy removal.
Choice of venting comes standard allowing greater installation flexibility,
B or BH venting.
Cabinet and insulation allows mounting to combustible surfaces for
minimum space requirement.
Exclusive full size cleanout port for fast and easy servicing.
Floor stand optional for GS indoor units.
All service connections exterior to the humidifier ready for field
connections.
120, 208-240V single phase power supply.
Steam outlet configuration ready for duct distributor, remote mounted
blower pack or Short absorption manifold connection.
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Printed in Canada Printed on Recycled Paper
U.S.A.
AxAir Nortec Inc.
826 Proctor Avenue
Ogdensburg, NY 13669
CANADA
AxAir Nortec Ltd.
2740 Fenton Road
Ottawa, Ontario K1T 3T7
TEL: 1.866.NORTEC1
FAX: [phone]
EMAIL: [e-mail]
WEBSITE: www.humidity.com
www.norteconline.com
www.nortecparts.com
Certificate No. 002419
electricsteam—atomizingnozzles—highpressurenozzles—steaminjection—steamexchange—gassteam
Form 07-289
U.S. Patent 5,816,496
Canadian Patent 2,203,332