Summary of Contents for Condair Nortec GS II Series
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NORTEC INSTALLATION MANUAL Gas-fired Steam Humidifier Nortec GS Series II Humidification and Evaporative Cooling...
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DANGER! Fire or explosion hazard! If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or loss of life. DO NOT store or use gasoline or other flammable va- pors and liquids in the vicinity of this or any other appliance.
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Serial number: Proprietary Notice This document and the information disclosed herein are proprietary data of Condair Ltd. Neither this document, nor the information contained herein shall be reproduced, used, or disclosed to others without the written authorization of Condair Ltd., except to the extent required for installation, operation or maintenance of the customer's equipment.
Contents Introduction General For Your Safety Receiving and Storage Inspection Storage and Transportation Product Overview General Description Model Designation Model Specifications Options Accessories Installation General Installation Overview 5.2.1 Typical Installation – Compact Units 5.2.2 Typical Installation – Full-Size Units Site Requirements Mounting the Humidifier 5.4.1 Clearances...
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5.8.2.2 Installation as a Category IV Appliance 5.8.2.3 Installation Requirements for Category III/IV Appliances. 5.8.3 Exhaust Vent Checklist Gas Connection 5.9.1 Gas Connection, Compact and Full-Size Unit 5.9.2 Gas Leakage Test 5.9.3 Gas Connection Checklist 5.10 Humidity Control Systems 5.10.1 Control Device Locations 5.10.2 Permissible Control Signal Inputs...
Comply with all local and regional regulations dealing with gas, combus- tion air, flue gases, water, steam and electrical installations. If you have additional questions, contact your Condair representative. They will be glad to assist you. General Limitations The subject of this manual is the Nortec GS humidifier.
(refer to the Operation and Maintenance Manual) . Any other type of application, without the express written consent of Condair, is considered to be NOT conforming to its intended purpose, and may lead to dangerous operation and will void the warranty.
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All personnel working with the unit must immediately report to the customer any alterations to the unit that may affect safety, and secure it against accidental power-up. DO NOT modify this appliance. • Modifications are NOT permitted on the Nortec GS humidifier without the express written consent of Condair. For Your Safety 2596645_A_EN_1912_Nortec-GS_IM Nortec GS...
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Always use original Condair replacement parts and accessories available through your Condair representative. The location of the various safety labels on the Nortec GS humidifier is shown below. Figure 1: Safety Labels Label, gas safety warning Label, keep cabinet closed warning...
Receiving and Storage Inspection All Condair products are shipped F.O.B at the factory. All damage, breakage or loss claims are the re- sponsibility of the shipping company. After receiving the shipment, inspect the goods as follows: – Inspect the shipping boxes for damage. Report any shipping box damages to the shipping company without delay.
Product Overview General Description The Nortec GS series is a completely new design of gas-fired steam humidifiers. It is designed to provide clean steam humidification at an economical price. The Nortec GS humidifier is available in condensing high-efficiency (CS), ultra-low NOx condensing (NX), and Mid-Temperature models in capacities rang- ing from 50 lb/h to 600 lb/h (23 kg/h to 260 kg/h).
The breakdown of the model number is shown below. Nortec GS 150 CS -Series II Series (Gas) Steam Capacity lb/h Efficiency CS - Condensing High Efficiency NX - Ultra-Low NOx Condensing MT - Mid-Temperature Figure 4: Model Number Breakdown (Example) Model Specifications The tables below list the specifications for the Nortec GS humidifier.
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Ultra-Low NOx Condensing (NX) Model Specifications Table 2: Ultra-Low NOx Condensing (NX) Model Specifications Blower Input Steam Capacity Manifold Pressure Model Fuel Speed BTUh (kW) lb/h (kg/h) in H2O (Pa) Nortec GS 50-NX Natural gas Maximum 65,000 (19.0) 50 (23) -0.01 (-2.5) Minimum 13,000 (3.8)
4001-4500 1220-1370 4501 and higher 1370 and higher Contact factory Options The table below shows the options for the Nortec GS humidifier. Contact your Condair representative for details. Table 5: Nortec GS Series Options Option Application Natural gas or propane Factory-installed gas valve for using either natural gas or propane in the humidifier.
National Fuel Gas Code, and/or CSA B149.1 codes. Nortec GS-Series II does not accept any liability for installation of humidification equipment by unquali- fied personnel, or the use of equipment/parts that are not authorized by Condair. Personnel Qualifications All installation work must be performed only by licensed personnel authorized by the customer. It is the customer’s responsibility to verify qualifications of the personnel.
Installation Overview 5.2.1 Typical Installation – Compact Units 1, 2 2, 5 Figure 5: Installation Overview – Compact Unit Humidistat, On/Off (for humidity control) 12 Inlet, gas 24 Steam line Humidity sensor or modulating humidis- 13 Supply line, water 25 Vent, exhaust (connected to exterior) tat (used for control of the space in the 14 Trap, sediment 26 Vent, air intake (connected to exterior...
Adhere to all local and national installation codes or regulations. Condair is not responsible for any installation code violations. The Nortec GS humidifier is designed to be floor-mounted, with the exception of the Nortec GS 50/100 unit which may also be mounted on the wall.
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The water supply pipe can be made of plastic that is pressure-proof and certified for use with drink- ing water systems, copper (not permitted for DI water) or stainless steel (minimum DIN 1.4301). The water supply should be free of additives such as corrosion inhibitors, disinfectants, etc., which may affect the performance of the humidifier.
Clearances The required clearances are listed below. Refer to "Overall Dimensions and Weight" on page 21. Consult local and national installation regulations. Condair does not accept responsibility for violations of the installation codes. Figure 7: Humidifier Suggested Clearances Installation 2596645_A_EN_1912_Nortec-GS_IM...
* minimum Table 9: Required Clearances* Overhead Right Side Floor Stand Front Left Side Rear Clearance Model Clearance "A" Clearance "B" Height "C" Clearance "D" Clearance "E" "F" in (mm) in (mm) in (mm) in (mm) in (mm) in (mm) Nortec 16 (406) 24 (610)
2. Ensure that the mounting surface has adequate structural strength to support the operating weight of the unit – refer to "Overall Dimensions and Weight" on page 21 for weights. Condair recommends mounting to 3/4 in (20 mm) thick plywood or equivalent. 3. Setup the mounting bracket: a.
5.4.4 Floor Stand Mounting - Compact Unit (Optional for Nortec GS 50/100) The compact unit may be mounted onto the floor with the floor stand option. Figure 9 on page Install the humidifier on the floor stand as follows. Refer to 1.
Steam generated by the humidifier can be distributed into a conditioned space through an air handling unit (AHU) using Condair steam distributors, blower packs or Condair SAM-e steam distribution mani- folds – refer to their respective manuals for installation details.
Figure 13 on page – Use only Condair steam hose between the steam outlet on the humidifier and the steam distribu- tor. Other types of steam hoses can affect performance of the unit, and may void the warranty. The minimum bend radius of the steam hose is 12 in (300 mm). The steam hose must not sag, and must have a minimum upslope of 10°, or a minimum downslope of 2°...
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Do not over-tighten the gear clamp. The maximum torque value for gear clamps is 16 in·lbs (180 N·cm). – Do not combine multiple steam lines, except at the steam distributor. Use a Condair adaptor specifically designed for that purpose, and only if the humidifiers connected to the adaptor operate in parallel. –...
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Condensate Lines – Use 1/2 in (13 mm) Condair condensate hose, or 1/2 in (13 mm) stainless steel pipe or copper pipe for condensate lines and traps. WARNING! Risk of severe burns from contact with hot fluids or steam! The condensate lines may be filled with hot fluids or steam. Bare skin in contact with hot fluids or steam can result in severe burns.
5.5.2.1 Common Steam and Condensate Line Installation Mistakes Some common steam and condensate line installation mistakes are shown in Figure 14 on page 2, 5 3, 5 >10° >1.2° Figure 14: Common Steam and Condensate Line Installation Mistakes The condensate trap is located less than the required minimum 12 in (300 mm) below the steam distributor. No condensate trap is installed at the horizontal-to-vertical transition.
Steam line does not reduce in diameter except at the steam distributor; and condensate line installed just before the restriction? Steam lines do not merge except at the steam distributor through a Condair adaptor? Steam line does not sag? ...
Water Connections Refer to "Site Requirements" on page 18 for the water supply and drain requirements. Read "Water Connection Requirements" on page 34, and perform the water connections as shown in Figure 15 on page 5.6.1 Water Connections Figure 15: Water Supply Connections. Nortec GS 50/100 and Nortec GS 150 shown Inlet, fill valve –...
Hose, drain, exhaust condensate – (not supplied) must have minimum downslope of 1.2°, and must not touch sides or bottom of funnel. Use Condair condensate hose. Funnel, air gap – funnel must be located below the condensate outlet and within 3 ft (1 m) of the unit (or according to code)
5.6.3 Water Connection Requirements Water and drain connections must meet the following requirements: – All water supply and drain connections must be installed to local plumbing codes. – For ease of maintenance, a water shutoff valve and union fitting must be installed in the supply line before the humidifier.
5.6.4 Water Connections Checklist Check the following to ensure that the water connections for the humidifier have been installed correctly: Water quality meet the requirements listed in Table 7 on page Shutoff valve and union fitting installed in supply line? ...
Adhere to all local and national installation regulations. Note: Condair requires installing an elbow (fitted with a screen) at the intake air inlet on all Nortec GS 150-600 (full size) units to prevent dirt and debris from being drawn into the combustion chamber.
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In addition, refer to "Sealed Combustion Installation Requirements" on page Table 15: Air Intake Vent Diameter Nortec Model Intake Vent Diameter in (mm) GS 50* 2 (50) GS 100 3 (75) GS 150 GS 200 4 (100) GS 300 GS 450 6 (150) GS 600 * Requires 3 in (75 mm) adapter...
3 ft (1 m) between them. – At low temperatures, water condensation can occur on the outside of the air intake vent. To prevent this, Condair suggests adding in-line heating and insulation on the intake vent. 5.7.3 Combustion Air Checklist Check the following to ensure that the combustion air connection for the humidifier has been installed correctly: ...
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– In applying the codes, refer to the vent system manufacturer's instructions, the local gas supplier regulations, and the specific instructions in this manual. – This appliance must be installed in compliance with national regulations and codes. The installation must only be performed by a qualified technician who is well versed with these codes and the local requirements of the jurisdiction.
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Table 16: Exhaust Vent Details - CS/NX/MT Model Appliance Exhaust Outlet Size Exhaust Vent Diameter Vent Type Category Nortec GS 50-CS/NX/MT Category IV CPVC or 3 in BH Nortec GS 50-MT Category III/IV Nortec GS 100-CS/NX/MT Category IV Type BH (stainless steel) or CPVC Nortec GS 100-MT Category III/IV...
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Figure 19 on page 41 Figure 20 on page 42 show the general types of venting arrangements. These are guidelines only. For the specific venting arrangements refer to "Installation as a C6 Appliance" on page "Gas Connection" on page 45 .
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2 ft 12 in (300 mm) *. (610 mm) * Figure 20: Horizontal Venting (with Optional Sealed Combustion Hookup) – Category III/IV Terminal, exhaust ("Tee") Terminal, air intake (90° elbow) – pointed down, for optional sealed combustion hookup Outlet, exhaust outlet Inlet, air intake Vent, air intake –...
5.8.2 Exhaust Vent Installation for CS/NX Model All vent installations must be in accordance with national and the local regulations. The exhaust outlet on the unit (CS/NXunits) has a female connection (metric size). Each unit is supplied with a metric-to-imperial adaptor (with internal gaskets) to accomodate imperial vent sizes. Ensure that the exhaust vent is supported by hangers or pipe straps so that there is no load on the humidifier 5.8.2.1 Installation as a Category III Appliance...
Exhaust Vent Checklist Check the following to ensure that the exhaust vent for the humidifier has been installed correctly: Exhaust vent installed to meet all national and local codes, vent manufacturer and Condair require- ments? Proper clearances maintained between exhaust vent and combustible materials? ...
Note: For Nortec GS 450 and Nortec GS 600 only, the gas line will require a 1-1/4 to 1 in NPT adaptor (not supplied) to connect to the inlet gas connection on the unit. Note: Condair recommends the installation of a gas meter (supplied by others) at the gas supply line. Gas Connection Requirements...
5.9.2 Gas Leakage Test DANGER! Risk of explosion and fire! Prevention: NEVER use an open flame to check for gas leaks. Risk of injury, death or property damage. Use a commercial soap solution or a gas sniffer to check for leaks. CAUTION! Risk of damage to the gas valve! Prevention: Before performing the leakage test described below, close the manual gas shutoff...
5.10 Humidity Control Systems 5.10.1 Control Device Locations The following schematic describes a potential system setup with respect to control devices. Refer to Figure 23 on page φ φ φ Figure 23: System Setup Schematic 1 Humidistat or humidity sensor 2 High limit humidistat or humid- 3 Switch, air proving ity sensor...
5.11 Electrical Connections Refer to "Site Requirements" on page 18 for the electrical requirements. Install the electrical connections according to the wiring diagram(s) (Figure 24 on page 49, and Figure 25 on page 50, as applicable) and the instructions for "External Connections"...
5.11.2 Wiring Diagrams 5.11.2.1 Nortec GS - All Units Legend: CONTROL SIGNAL PRIMARY VOLTAGE Wire Colors CONNECTIONS CONNECTION R - Red W - White Bk - Black Bl - Blue Br - Brown EXTERNAL EXTERNAL Gr/Y Low voltage O - Orange terminal strip Unit ON Steam...
5.11.2.2 Nortec GS - 450/600 Figure 25 shows the supplementary wiring diagram for the Nortec GS 450 and Nortec GS 600. The con- nections are carried over from Figure 24 on page Legend: Continued from Continued from Continued from Wire Colors previous wiring diagram previous wiring diagram previous wiring diagram...
5.11.3 External Connections This section describes the different external control signal and power connections to the Nortec GS humidifier. CAUTION! Risk of improper operation, or damage to equipment and property! Prevention: Before disconnecting the control signal cables, tag all wires. Reconnect all wires prop- erly after servicing.
5.11.3.2 Modulating Demand or Humidity Signal Connect an external humidity sensor input or direct demand modulating input to pins "3" and "4" in the low voltage terminal strip. Refer to Figure 24 on page 49 and . The permissible control signal input values are shown in Table 17 on page Do not connect multiple modulating signals to the same modulating input on the humidifier.
5.11.3.3 On/Off Humidistat Signal If an On/Off humidistat is used, connect the signal cable to terminal pins "4" and "6" in the low voltage terminal strip. Refer to . Set Control Mode must be set to "On/Off" in the control software – refer to the Operation and Maintenance Manual.
• Error – this relay can be wired to open (NC) or close (NO) when a fault is detected by the humidifier controls. • Service – this relay is activated when the set maintenance interval elapses. It can be wired to open (NC) or close (NO) when a warning appears on the touchscreen panel of the humidifier and the status LED turns yellow in color.
Modbus cable requirements, and Table 19 for communication parameters. Contact your Condair rep- resentative if assistance is needed to change the default communication parameters. Note: The jumper JP7 on the control board must be installed to activate Modbus or BACnet MSTP communication via RS485 interface (J6).
The integrated control board in the humidifier allows up to four integrated controllers to connect in a "main-extension" configuration using Condair's Linkup system. All the humidifiers within this setup must share the same environment, and be controlled by one set of control signals connected to the main unit.
5.11.5 Electrical Connections Checklist Check the following to ensure that the electrical connections for the humidifier have been installed correctly: Power supply meet the rated current draw limits shown on the specification label ("Model Specifications" on page 12)? ...
Commissioning Commissioning Checklist The humidifier must always be commissioned for the first time by a service technician from your local Condair representative, by a Condair employee, or by personnel who are well trained and authorized by the customer. It is the customer's responsibility to verify the qualifications of personnel.
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Site Water Supply, continued... Water supply pressure meets require- ment: (Permissible range – 30-80 psig (207-550 kPa) Select checkbox, or enter measurement, as appropri- ate). Water supply pipe sized correctly: (Minimum 1/2 in (13 mm) diameter required). Water supply temperature meets require- ment: (Optimal range –...
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Site Gas Connection Gas type: (Natural gas or propane) Gas supply pressure: (Natural gas permissible range – 5-10 in H20 (1.25- 2.49 kPa) Propane permissible range – 9-14 in H20 (2.24- 23.49 kPa)) Manual gas shutoff valve installed: Distance from humidifier: (Manual shutoff valve must be installed per local code).
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Steam Line Condensate Drains Note: Make sure all condensate drains meet these requirements. Slope of all condensate lines meets requirement: (Minimum constant downslope of 1 in/48 in (1.2°) required). Condensate lines connect to full-size Tee connectors: Diameter of condensate traps meets requirement: (Minimum 12 in (300 mm) required).
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Combustion Air Space Air Installation Combustion air requirements satisfied: (Meet all applicable local and national codes). Combustion air free of contaminants: Fresh air intake requirements satisfied: (Refer to Table 14 on page 36 for minimum fresh air cross-sectional area requirements. Refer to local codes).
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Controls Note: If Condair control devices are installed, enter their locations below; otherwise leave fields empty. Condair humidity controls location: Condair high limit switch location: (Minimum 3× absorption distance from the distributor required). Condair air proving switch location: Nortec GS...
6.1.2 Performance Checklist Complete the performance tests after inspecting the site services and the installation, then fill out the form below. Note: When filling out the form leave the checkbox un-checked if the item does not apply, or if the requirement is not satisfied.
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Controls, continued... Sensed humidity less than setpoint value (if transducer is used): Security loop closed: (On a dual cylinder unit running in series or parallel mode, a jumper must be installed between the pins '2" in the two low voltage terminal strips). Blower pack loop closed: Humidifier responds to control signal interruption:...
Steam line does not reduce in diameter except at the steam distributor; and condensate line installed just before the restriction? Steam lines do not merge except at the steam distributor through a Condair adaptor? Steam line does not sag? ...
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Exhaust vent diameter as listed in Exhaust vent length does not exceed an equivalent length of 100 ft (30 m)? If unit is a Condair GS 50 using propane gas, is it limited to 50 ft (15 m)? Maximum six elbows in the exhaust vent? ...
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Gas piping adequately supported? Gas leakage test completed, and all leaks fixed? De-pressurize gas supply line after leak test? Electrical Connections Power supply meet the rated current draw limits shown on the specification label (Figure 3 on page 11)? ...
Product Specifications Weights For the weights of the Nortec GS humidifier models refer to "Overall Dimensions and Weight" on page Dimensions 9.3in Exhaust Outlet * 17.5in 443mm 236mm Ø 2.4 in (60 mm) 6.8in Ø 3.1 in (80 mm)** 14.1in 359mm Steam Outlet Controls In...
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Steam Outlet Ø 3 in (75 mm) 25.0 in (635 mm) 19.6 in (497 mm) 8.3 in (212 mm) Exhaust Outlet * Ø 3 in (80 mm) Air Inlet Ø 3 in (80 mm) Controls In Ø 7/8 in (22 mm) 2.3 in (59 mm) Gas Inlet 1/2 in NPT...
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33.1 in (841 mm) Exhaust Outlet * Steam Outlet 24.0 in (610 mm) Ø 4 in (100 mm) Ø 3 in (75 mm) 8.1 in (207 mm) 2.4 in (61 mm) Controls In Air Inlet Ø 7/8 in (22 mm) Ø...
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Air Inlet Ø 6 in (150 mm) Steam Outlet Ø 4 in (100 mm) Controls In Ø 7/8 in (22 mm) 49.4 in (1254 mm) 31.9 in (811 mm) Exhaust Outlet * 8.0 in (204 mm) Ø 6 in (150 mm) Gas Inlet Water Inlet 1 in NPT...
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Steam Outlet Exhaust Outlet * Ø 4 in (100 mm) Ø 6 in (150 mm) Air Inlet Ø 6 in (150 mm) Controls In Ø 7/8 in (22 mm) 59.2 in (1504 mm) 33.9 in (861 mm) 8.0 in (204 mm) Gas Inlet Water Inlet 1 in NPT...
Performance and Operating Data Performance Data Minimum Input (gross) BTUh (kW) Maximum Input (gross) BTUh (kW) Min./Max. Steam Nortec Capacity Model Natural Gas Propane Natural Gas Propane lb/h (kg/h) GS 50-CS 12,400 (3.6) 13,000 (3.8) 62,000 (18.2) 62,000 (18.2) 10-50 (4.5-23) GS 50-NX 13,000 (3.8) –...
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Gas Operating Pressure: Natural gas 4.5-10.0 in H2O (1.1-2.4 kPa) Propane 9.0-13.0 in H2O (2.2-3.2 kPa) Water Supply: Water pressure (regulated) 30-80 psig (3.0-8.0 bar, 207-550 kPa) Flow rate 2.6 gpm (10 L/min) for Nortec GS 50-300 , 5.3 gpm (20 L/min) for Nortec GS 450- Water temperature 34-59 °F (1-15 °C) recommended;...
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Warranty Condair Inc. and/or Condair 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, are free from defects in material and workmanship.
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CONSULTING, SALES AND SERVICE: Condair Ltd. U.S.A. 835 Commerce Park Ave Ogdensburg, NY 1366-2209 CANADA 2740 Fenton Road Ottawa, ON, K1T 3T7 Tel: 1.866.667.8321 Fax: 613.822.7964 Email: na.info@condair.com Website: www.condair.com...
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