Related Manuals for Nortec EL SERIES
Summary of Contents for Nortec EL SERIES
- Page 1 IMPORTANT! Read and save these instructions. This manual to be left with the equipment. INSTALLATION, OPERATION AND MAINTENANCE MANUAL Outdoor Steam Humidifier Nortec EL / RS Humidification and Evaporative Cooling...
- Page 2 Proprietary Notice This document and the information disclosed herein are proprietary data of Nortec Humidity Ltd. Neither this docu- ment, nor the information contained herein shall be reproduced, used, or disclosed to others without the written authorization of Nortec Humidity Ltd., except to the extent required for installation, operation or maintenance of the customer's equipment.
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Page 3: Table Of Contents
Water and Drain Lines 5.6.2 External Freeze Protection System 5.6.2.1 Normally-Open and Normally-Closed Valves 5.6.2.2 3-Way Normally-Closed Valve 5.6.3 Water Connections Checklist Electrical Connections 5.7.1 Outdoor Enclosure Wiring Diagram 5.7.2 Electrical Connections Checklist Commissioning General Commissioning 2584597_B_EN_1705 Nortec EL/RS Outdoor Contents... - Page 4 Restarting After a Freeze-up Spare Parts List Decommissioning General Removal from Service for Disposal or Long-term Storage Disposal/Recycling Product Specifications 10.1 Performance Data 10.2 Operating Data 10.3 Weights 10.4 Dimensions Appendix Weather Data Appendix Installation Checklist 2584597_B_EN_1705 Nortec EL/RS Outdoor Contents...
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Page 5: Introduction
General Limitations The subject of this manual is the Nortec EL/RS Outdoor humidifier. It is intended as a supplement to the Nortec EL/Nortec RS installation, operation and maintenance manuals. The various options and accessories for the Nortec EL/RS Outdoor humidifier may only be described in-so-far as is necessary for proper installation and operation of the equipment. - Page 6 Keep this manual in a place where it is safe and readily accessible. If the equipment is moved to another location, please make sure that it remains with the equipment. If the manual is lost or misplaced, please contact your Nortec representative for a replacement. 2584597_B_EN_1705...
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Page 7: For Your Safety
Requirements" on page 20 for details). Any other type of application, without the express written consent of Nortec, is considered to be NOT conforming to its intended purpose, and may lead to dangerous operation and will void the warranty. In order to operate the equipment in the intended manner all information contained in this manual, in particular the safety instructions, must be observed closely. - Page 8 (ESD). Refer to ANSI/ESD-S20.20. Preventing Unsafe Operation All personnel working with the Nortec EL/RS Outdoor humidifier must immediately report to the customer any alterations to the unit that may affect safety, and secure the humidifier against accidental power-up. Modifications to the Unit Prohibited Modifications are NOT permitted on the Nortec EL/RS Outdoor humidifier without the express written consent of Nortec.
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Page 9: Receiving And Storage
Moving and Handling the Unit The Nortec EL/RS Outdoor humidifier is bolted to a shipping skid and enclosed in a packaging crate before it is shipped from the factory. While still attached to the skid, the humidifier can be lifted onto a Table 9 on page 57 rooftop or other mounting location using a forklift or crane. - Page 10 This page intentionally left blank 2584597_B_EN_1705 Nortec EL/RS Outdoor Receiving and Storage...
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Page 11: Product Overview
Product Overview General Description The Nortec EL/RS Outdoor humidifier is UL-approved for installation outdoors. It is housed in an enclosure that has an IP54 rating, and comes with built-in heating, ventilation and freeze protection for the plumb- ing components. The unit is intended to operate in -40 °F to 104 °F (-40 °C to +40 °C) temperatures. - Page 12 Figure 2: Nortec EL/RS Outdoor Humidifier (medium size unit shown) Side door Front door Controls cabinet 10 Mechanical freeze protection valve (EL-OC and RS-OC Touchscreen display without scale tank) Intake shroud (and filter) 11 Steam cylinder (EL-OC) Mechanical freeze protection valve (RS-OC with scale...
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Page 13: Model Designation
Model Designation The specification label on the side of the Nortec EL/RS Outdoor humidifier shows its model number, Figure 3. The breakdown of the model number is shown in Figure serial number and ratings – refer to LISTED HUMIDIFIER 205X... -
Page 14: Models Overview
Models Overview The Nortec EL/RS Outdoor humidifier is available in different sizes with different heating voltages and Table 1 steam capacities as shown in below. Table 1: Nortec EL/RS Outdoor Steam Humidifier Models 110- 220- 380- 440- 550- 220- 440-... -
Page 15: Options
Options Table 2 shows the list of options for the Nortec EL/RS Outdoor humidifier. Contact your local Nortec rep- resentative for details. Table 2: Nortec EL/RS Outdoor Humidifier Options Option Application Mounting bracket Provides a means to attach the unit to an air handling unit or an exterior wall. - Page 16 This page intentionally left blank 2584597_B_EN_1705 Nortec EL/RS Outdoor Product Overview...
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Page 17: Installation
Comply with all local and national codes dealing with water, steam and electrical installations. Nortec does not accept any liability for installation of humidification equipment by unqualified personnel, or the use of equipment/parts that are not authorized by Nortec. -
Page 18: Installation Overview
Installation Overview The Nortec EL/RS Outdoor humidifier can be installed in three different ways – mounted directly on a suitably reinforced vertical surface on the air handling unit (AHU), rooftop on a curb, or a suitable vertical Figure Figure 6 on page 16 Figure 7 on page 18 surface on an exterior wall. - Page 19 This mounting arrangement is advantageous because the steam piping is shorter, thus minimizing condensate losses and backpressure in the line. Do not install the Nortec EL/RS Outdoor humidifier in an outdoor environment where the unit is exposed to severe weather or where the temperature drops below -40 °F (-40 °C).
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Page 20: Rooftop Curb
Note 3: In cold climates all drain lines must be properly trace heated and insulated to prevent freezing. 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation... - Page 21 In cold climates it must be properly trace heated and insulated to prevent freezing. The Nortec EL/RS Outdoor humidifier is designed to be mounted on a curb. When choosing this mounting arrangement, locate the humidifier as close as possible to the steam distributor to minimize condensate losses and backpressure in the line.
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Page 22: Exterior Wall
13 Mounting bar (supplied – ×2 for small unit, ×3 for medium/large unit) secured to an exterior wall. See Note 6 below. 14 Mounting bracket (×2 for small, ×3 for medium/large unit) secured to back of humidifier 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation... - Page 23 Do not install the Nortec EL/RS Outdoor humidifier in an outdoor environment where the unit is exposed to severe weather or where the temperature drops below -40 °F (-40 °C).
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Page 24: Site Requirements
… Make sure that the selected location permits proper routing of the steam and condensate lines – refer to the Nortec EL/RS manuals for details. The number of bends and the length of the line must be kept to a minimum so that the total system backpressure does not exceed 5.5 in H2O (1.37 kPa). - Page 25 Note: In large units with two steam cylinders, separate air gap funnels must be used for drain lines from each cylinder. … Some units use a drain pump. Refer to the Nortec EL/RS manuals for drainage rates and pressure requirements.
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Page 26: Mounting The Humidifier
Mounting the Humidifier 5.4.1 Location and Suggested Clearances The location of the Nortec EL/RS Outdoor humidifier depends largely on the location of the steam dis- Figure 8 on page 22 Table 4 on page 23 tributor and the preferred mounting arrangement. show the suggested minimum clearances regardless of the mounting arrangement selected. -
Page 27: Pipe Chase Location
Table 4: Nortec EL/RS Outdoor Humidifier Suggested Minimum Clearances Suggested Minimum Clearances in (mm) Housing Size Nortec Model Right Side Left Side Ground/ Front "B" Back "D" * "A" "C" Roof "E" ** Small EL-OC 005-050 36 (914) 36 (914) -
Page 28: Air Handling Unit Mounting
(217) (322) (381) (403) (406) (1329) (114) Large 6.22 4.00 9.07 14.30 10.07 24.30 15.00 15.88 16.00 52.34 9.00 (158) (102) (230) (363) (256) (617) (381) (403) (406) (1329) (229) * Typical ** Minimum clearance 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation... - Page 29 Outline of unit's rear panel – medium size unit, reference Flat washer, 1/4 in diameter (supplied by others) 10 Outline of unit's rear panel – large size unit, reference Bolt, 1/4-20 UNC (supplied by others) Shipping skid 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation...
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Page 30: Rooftop Curb Mounting
Table 6: Curb Dimensions Dimension Housing in (mm) Size Small 20.1 (511) 13.3 (338) 15 (380) Medium 25.1 (638) 18.1 (460) 15 (380) Large 41.1 (1044) 18.1 (460) 15 (380) 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation... - Page 31 Figure 11: Rooftop Curb Mounting Fastener (supplied by others) Curb Shipping skid Screw (used for shipping) 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation...
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Page 32: Exterior Wall Mounting
(217) (322) (381) (403) (406) (1329) (114) Large 6.22 4.00 9.07 14.30 10.07 24.30 15.00 15.88 16.00 52.34 9.00 (158) (102) (230) (363) (256) (617) (381) (403) (406) (1329) (229) * Typical ** Minimum clearance 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation... - Page 33 Bolt, 1/4-20 UNC (supplied by others) 10 Outline of unit's rear panel – large size unit, reference Shipping skid Screw (used for shipping) Mounting surface, external wall Outline of unit's rear panel – small size unit, reference 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation...
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Page 34: Mounting Checklist
Steam Line Figure 2 on The steam outlet is located on the rear of the Nortec EL/RS Outdoor humidifier – refer to page 8. Steam hose(s) and clamps are supplied to permit connection to the steam line into the building. -
Page 35: Steam Connections Checklist
Condensate line and trap trace heated? … Steam line sized correctly, and does not exceed maximums specified in the Nortec EL/RS manuals? … Minimum bend radius of 12 in (300 mm) for steam hose, or 5× internal diameter for rigid pipes maintained? …... -
Page 36: Water Connections
Refer to for the overall routing of water and drain lines for each mounting "Site Requirements" on page 20 arrangement. Also refer to and the Nortec EL/RS manuals for the water supply and drain requirements. 5.6.1 Water and Drain Lines Figure Connect the water supply and drain lines as described below. - Page 37 All drain lines described below should be as short as possible, and routed through a pipe chase. Drain lines must have a constant minimum downslope of 1 in/48 in (1.2°) and empty into the funnel 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation...
- Page 38 Disconnect and flush the water supply and drain lines to clear out any debris in the lines. Check the strainer in the fill valve to ensure it is clear of all debris (refer to the Nortec EL/RS manuals for details). Reconnect the lines.
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Page 39: External Freeze Protection System
In cold climates, the external freeze protection system (supplied by others) is an important part of the protection for the Nortec EL/RS Outdoor humidifier against freezing. The external freeze protection system must be installed correctly and fully functional at all times. -
Page 40: 5.6.2.2 3-Way Normally-Closed Valve
Bi-metal strip (supplied by others) set to 35 °F (2 °C) and installed around the trace heated pipe 120 VAC exterior power supply, trace heating (supplied by others) 24 V normally-closed 3-way valve (supplied by others) 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation... -
Page 41: Water Connections Checklist
… All pipe chases sealed to isolate the unit from pressure inside the building? … Any leaks? … Supply and drain lines flushed to remove all debris? Strainer in the fill valve clear of all debris? 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation... -
Page 42: Electrical Connections
Connect the external freeze protection valves (supplied by others) to the humidifier's safety circuit "External Freeze Protection System" on page as described in – For all other electrical connection details (including low voltage control wiring) refer to the Nortec EL/ RS manuals. 2584597_B_EN_1705 Nortec EL/RS Outdoor... - Page 43 Figure 17: Nortec EL/RS Outdoor Humidifier Power Connection Terminal block (X0) External disconnect switch (NEMA Type 3R or greater) Knockout for routing power cable 2584597_B_EN_1705 Nortec EL/RS Outdoor Installation...
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Page 44: Outdoor Enclosure Wiring Diagram
To Steam Cylinder Transformer 120V Outdoor Cabinet (OC) Wiring Figure 18: Outdoor Cabinet Wiring Diagram - Nortec EL/RS Outdoor Humidifier 5.7.2 Electrical Connections Checklist Check the following to ensure that the electrical connections for the humidifier have been installed properly: (Figure 2 …... -
Page 45: Commissioning
Commissioning The unit must always be commissioned for the first time by a service technician from your Nortec rep- resentative, or by personnel who are well trained and authorized by the customer. For the consolidated installation checklist, refer to the "Installation Checklist"... - Page 46 This page intentionally left blank 2584597_B_EN_1705 Nortec EL/RS Outdoor Commissioning...
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Page 47: Operation And Maintenance
Operation and Maintenance Operating the Unit The Nortec EL/RS Outdoor humidifier is operated in the same manner as its indoor counterpart. Refer to respective Nortec EL/Nortec RS operation and maintenance manual for details. Inspections During Operation Regularly inspect the following when the unit is in operation: …... -
Page 48: Maintenance
During cold weather, all maintenance on the unit must be performed in a heated service tent. The maintenance items discussed in this section are in addition to those listed in the Nortec EL/Nortec RS operation and maintenance manual. Refer to the respective Nortec EL/Nortec RS operation and maintenance manual for other maintenance requirements. -
Page 49: Steam Cylinder
… Replace the steam cylinder on the EL-OC unit, and service the steam cylinder on the RS-OC unit when the service reminder appears on the touchscreen display. Refer to the respective Nortec EL/Nortec RS operation and maintenance manual for replacement procedure. -
Page 50: Restarting After A Freeze-Up
In the event of a freeze-up, inspect then restart the unit as follows: 1. Inspect all hoses, fittings, valves and seals for cracks or damage. Contact your Nortec representative to order replacement parts. Check all connections after replacing damaged parts. -
Page 51: Spare Parts List
Spare Parts List Figure 20 on The spare parts for the Nortec EL/RS Outdoor humidifier is listed in this section. Refer to page For all other spare parts refer to the respective Nortec EL/RS Spare Parts List. 2584597_B_EN_1705 Nortec EL/RS Outdoor... - Page 52 Nortec EL/RS Outdoor Humidifier Figure 20: Nortec EL/RS Outdoor Humidifier 2584597_B_EN_1705 Nortec EL/RS Outdoor Spare Parts List...
- Page 53 SP, EL RS OC, Door, Cabinet, Plumbing (qty. 1) Medium 2585118 SP, EL RS OC, Door, Cabinet, Plumbing (qty. 2) Large 2585119 Table 1 on page 10 Note: Refer to for details of the humidifier sizes. 2584597_B_EN_1705 Nortec EL/RS Outdoor Spare Parts List...
- Page 54 Nortec EL/RS Outdoor Humidifier Figure 21: Figure 20: Nortec EL/RS Outdoor Humidifier, continued... 2584597_B_EN_1705 Nortec EL/RS Outdoor Spare Parts List...
- Page 55 (3.5 A) (6 A) (4 A) (3.2 A) (2.5 A) Large units 2590297 2590296 2590295 2590294 2590292 2590294 (1.0 kVA transformer) (8 A) (7.5 A) (6 A) (5 A) (3.5 A) (5 A) 2584597_B_EN_1705 Nortec EL/RS Outdoor Spare Parts List...
- Page 56 Nortec EL/RS Outdoor Humidifier Figure 22: Nortec EL/RS Outdoor Humidifier – Kit Details Note: Greyed out items are not a part of the kits. 2584597_B_EN_1705 Nortec EL/RS Outdoor Spare Parts List...
- Page 57 Nortec EL/RS Outdoor Humidifier (EL-OC) (RS-OC) Figure 23: Nortec EL/RS Outdoor Humidifier – Kit Details, continued... Note: Greyed out items are not a part of the kits. 2584597_B_EN_1705 Nortec EL/RS Outdoor Spare Parts List...
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Page 59: Decommissioning
6. Carefully remove the humidifier from its mounting surface. 7. Cap the pipe chases. 8. If the Nortec EL/RS Outdoor humidifier is to be put into long-term storage, store the humidifier in its original packaging inside a protected area that meets the following requirements: •... -
Page 60: Disposal/Recycling
Disposal/Recycling The Nortec EL/RS Outdoor humidifier should not be disposed off in domestic waste, and should only be disposed off in accordance with local regulations at authorized collection facilities. If you have any questions, contact the appropriate local authorities or your local Nortec representative. -
Page 61: Product Specifications
Refer to the respective Nortec EL/RS Operation and Maintenance manual for the performance data. 10.2 Operating Data The following data pertains to the Nortec EL/RS Outdoor humidifier. Refer to the respective Nortec EL/ RS Operation and Maintenance manual for additional operating data. Ambient Conditions Ambient temperature -40 °F to 104 °F (-40 °C to +40 °C) -
Page 62: Dimensions
4.34 (110) 15.60 1.65” (42 mm) dia. (396) for drain hose 0.88” (22mm) dia. for main power cable Mounting bracket (x2) Figure 24: Nortec EL/RS Outdoor Steam Humidifier , Small Housing* EL-OC 005-030 2584597_B_EN_1705 Nortec EL/RS Outdoor Product Specifications... - Page 63 Mounting bracket (x3) Figure 25: Nortec EL/RS Outdoor Steam Humidifier, Medium Housing* EL-OC 050-100 and RS-OC 010-090. For RS-OC 090 with two cylinders, refer to Figure 26 on page Note: The main power and auxiliary power cables enter the unit through multi-diameter knockouts with the following hole sizes: 7/8 in (22 mm), 1-1/8 in (29 mm), 1-3/4 in (45 mm) and 2.5 in (64 mm).
- Page 64 (x3) Figure 26: Nortec EL/RS Outdoor Steam Humidifier, Large Housing* EL-OC 150/200 and RS-OC 090-180 (units with two steam cylinders) Note: The main power and auxiliary power cables enter the unit through multi-diameter knockouts with the following hole sizes: 7/8 in (22 mm), 1-1/8 in (29 mm), 1-3/4 in (45 mm) and 2.5 in (64 mm).
- Page 65 The following weather design data is provided to assist in determining suitable locations for rooftop mounting of the Nortec EL/RS Outdoor units. Locations that experience very cold winter conditions are not good candidates for rooftop mounting of the Nortec EL/RS Outdoor units. Installing the humidifier in areas where temperature drops below -40 °F (-40 °C) during January, or rises above 104 °F (40 °C)
- Page 66 North Dakota Bismarck Ohio Cincinnati Cleveland Columbus Toledo Oklahoma Oklahoma City Oregon Baker Portland Pennsylvania Harrisburg Philadelphia Pittsburg Scranton – – Rhode Island Providence South Carolina Charleston Columbia South Dakota Huron Rapid City Tennessee Knoxville Memphis 2584597_B_EN_1705 Nortec EL/RS Outdoor Appendix-A...
- Page 67 Manitoba Brandon Churchill The Pas Winnipeg New Brunswick Campbellton Fredricton Moncton Saint John's Newfoundland Corner Brook Gander Goose Bay St. John's North-West Frobisher Territories Resolute Yellowknife Nova Scotia Halifax Sydney Yarmouth Nunavut Iqaluit (Source: Internet) 2584597_B_EN_1705 Nortec EL/RS Outdoor Appendix-A...
- Page 68 Sudbury Thunder Bay Timmins Toronto Windsor Prince Edward Charlottetown Island Quebec Knob Lake Mont Joli Montreal Port Harrison Quebec City Sept-Iles Sherbrooke Trois Rivieres Saskatchewan Prince Albert Regina Saskatoon Swift Current Yukon Terriroty Dawson Whitehorse 2584597_B_EN_1705 Nortec EL/RS Outdoor Appendix-A...
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Page 69: B Appendix
Condensate line and trap trace heated? … Steam line sized correctly, and does not exceed maximums specified in the Nortec EL/RS manuals? … Minimum bend radius of 12 in (300 mm) for steam hose, or 5× internal diameter for rigid pipes maintained? …... - Page 70 Disconnect switch installed external to the unit, and NOT directly attached to unit? … All wiring done according to the wiring diagrams and instructions in this manual? … Electrical installation meet the applicable national and local codes? 2584597_B_EN_1705 Nortec EL/RS Outdoor Appendix-B...
- Page 71 Warranty Nortec Humidity Inc. and/or Nortec Humidity 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 war- ranted (with the exception of the cylinder), are free from defects in material and workmanship.
- Page 72 Consulting, Sales and Service: U.S.A. 835 Commerce Park drive Ogdensburg, NY 1366-2209 CANADA 2740 Fenton Road Ottawa, ON, K1T 3T7 Tel: 1.866.NORTEC1 Fax: 613.822.7964 Email: nortec@humidity.com Website: www.humidity.com...
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