Page 1
IMPORTANT! Read and save these instructions. This manual to be left with the equipment. ML HEADS INSTALLATION GUIDE Adiabatic humidification system Humidification and Evaporative Cooling...
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.
Contents Introducion Before You Start! General For your safety Safety Health and hygiene Receiving and storage Inspection Storage and transportation Site planning Prior to starting Experts on site ML Princess - Direct room humidification General description Assembly overview 5.2.1 Electrical connection 5.2.2 Nozzle ring installation 5.2.3 Warning label 5.2.4...
Page 4
ML Solo - Direct room humidification General description Assembly overview 6.2.1 Solo assembly 6.2.2 Electrical connection Mounting the humidifier 6.3.1 Standard mounting Placement overview 6.4.1 Hose layout for ML Solo 6.4.2 Atomization clearances 6.4.3 Placement of heads Product specifications 6.5.1 Technical data for ML Solo 6.5.2 Sound power 6.5.3...
Page 5
ML nozzles 10.1 ML standard nozzles 10.2 ML low capacity nozzles Appendix Mounting instructions Stainless steel screw couplings High pressure hose dimensioning Installation examples Appendix Humidity sensors B.1.1 HST2-010 B.1.2 HST2-420 B.1.3 DOL114 Nozzle swivel adapter (Optional) 2591584_EN_1706 ML Systems Contents...
If you have additional questions, contact your local Nortec representative. They will be glad to assist you. General Limitations The subject of this manual is the Nortec ML systems direct room humidification heads.
Page 7
If the manual is lost or misplaced, contact your Nortec representative for a replacement copy. Language versions This manual is also available in other languages – contact your Nortec representative. 2591584_EN_1706 ML Systems...
(refer to the Nortec MLPRO IOM 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.
Page 9
No modifications must be made on the ML-System without the manufacturer’s consent. All persons working with the system must report to the owner if any alterations are detected. Use only original accessories and spare parts available from your Nortec representative. DANGER! Risk of electric shock! A person may come in contact with live parts when the pump station/control unit is open.
Water monitoring The quality of water being used in the Nortec ML Humidification System should be checked prior to system commissioning and comply with the guidelines in the high pressure pump manual. The Nortec ML Humidification System must be monitored for hygiene as part of the maintenance pro- gram.
Page 11
Legionella and E.coli. Please read the pump manual for more information on disinfection. If you are in any doubt about the suitability of water quality, please contact your Nortec Humidity distributor who will be happy to support you.
Receiving and storage Inspection All Nortec products are shipped F.O.B at the factory. All damage, breakage or loss claims are the re- sponsibility of the shipping company. Upon receipt, remove the transit packaging and inspect the components to ensure that no damage has occurred during transit.
Page 13
Keep the original packaging of the unit/components for later use. If the packaging needs to be disposed of, observe local regulations on waste disposal. Recycle packaging where possible. Disposal You must observe local laws and regulations when disposing of your Nortec ML system at the end of its working life. 2591584_EN_1706...
• Training and guidance * Nortec Humidity uses an industry leading method for measuring bacterial activity in the water; the ap- proved and patented BactiQuant test. This, unique to Nortec, field test takes water samples from critical project locations. Thereafter, the bacteriological quality of the water can be read within 30 minutes, and the system can be disinfected if necessary.
Figure 1: ML Princess direct room humidification system General description The Nortec ML Princess direct room humidification head is a state-of-the-art high pressure adiabatic dispersion unit. It is part of a complete high pressure humidification system with one or more humidifica- tion units and one or more high pressure pump stations.
Assembly overview 5.2.1 Electrical connection DANGER! Risk of electric shock! A person may come in contact with live parts when the pump station/control unit is open. Touching live parts may cause severe injury or death. Prevention: Before carrying out any work on the system, disconnect power and water supply. The fan must be connected to power supply by an authorized electrician.
5.2.2 Nozzle ring installation A. The nozzle ring is installed on top of the fan by means of the delivered fittings. Standard nozzle rings are provided with ball valve, filter unit and automatic bleeding. B. For the final installation of the nozzle ring, do not install the bleeding nozzle on each individual hu- midity unit until the system has been flushed through.
5.2.3 Warning label Prior to assembling, installing, or mounting the Princess heads, ensure that the warning label is ap- propriately affixed on the side of the Princess head, as shown in Figure 4. Ensure that it is mounted in a visible place. WARNING: HIGH PRESSURE 70 bars (1000 PSI).
CAUTION! Be careful! The threads on the nozzles break easily, the nozzle seals with an O-ring and hence does not need to be tightened very hard, just a little more than you can do by hand. 5.2.4 Installation of optional air filter The air filter serves as protection for the fan motor. In operating environments with higher than normal dust/dirt in the air (woodworking, composite sanding, etc.) it may be necessary often to clean filters due to the high dust loads that are carried with the conveying air.
Observe and comply with all local and national codes dealing with water 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 21
• Position the Nortec ML Princess units in such a way to enable the atomized mist to spread freely. When the mist is prevented from spreading by obstacles (e.g. ceilings, beams, ventilation ducts, airflow, machinery, etc.), turbulences can build up and condensation may occur as a result.
5.3.2 Placement of heads Min. distance = 26 ft. (8.0 m) Figure 9: Distances between modules 2591584_EN_1706 ML Systems ML Princess - Direct room humidification...
Mounting the humidifier As mentioned earlier, the Princess units are typically hung from a ceiling via chains, and water is fed via the high pressure tubing and electricity is fed via cables. There are additional wall brackets that may be purchased for wall mounting. 5.4.1 Ceiling installation Adjust the chains so that the unit is level.
5.4.2 Connecting water and power Cable ties Cable High pressure hose Figure 12: Connecting water and power to the ML Princess 2 The high pressure hose is connected to the ball valve. The hose can be strapped to the chain using cable ties.
5.4.3 Optional - Wall mount The bracket is used for wall mounting of ML Princess 2, where only humidification out into the room is wanted. Together with the wall bracket, a shielding for the fan is supplied, so that the air does not blow against the wall.
Spare parts Item Part No. Nozzle ring without ball valve, filter and nozzles 102 200 001 Ball valve, complete 102 910 000 Bracket set for nozzle ring ML Princess 2 102 901 000 Fan for ML Princess 2, 230 VAC 310 010 000 Fan for ML Princess 2, 115 VAC 310 010 002...
5.6.3 Technical data for nozzles Working pressure 507-1015 psi (35 - 70 bar) Material Stainless steel Anti-drip valve Standard 5.6.4 Technical data for nozzle ring Material 316 stainless steel Pre-filter 20 micron 5.6.5 Sound power Converted to noise level in free field: Distance to unit 3.3 ft.
Humidity is produced as water under high pressure (1015 psi (70 bar)) is atomized into micro-sized particles which are instantly absorbed into the surrounding air. The Solo units are typically attached to walls or columns via specific Nortec Solo brackets, and water is fed via the high pressure tubing and electricity is fed via cables.
6.2.1 Solo assembly WARNING! Never unscrew a nozzle on a pressurised unit. Disconnect power to the pump station when working on high-pressure system. CAUTION! Be careful! The threads on the nozzles break easily, the nozzle seals with an O-ring and hence does not need to be tightened very hard, just a little more than you can do by hand.
6.3.1 Standard mounting The Nortec ML Humidification Heads can be fastened to a wall or ceiling using the appropriate The fixtures have to be fastened to the wall or ceiling using appropriate material (screws, raw plugs, concrete screw anchors etc.) We recommend to locate the appropriate mounting location - either a 2x4 wooden stud or equivalent.
Page 36
Mounting bracket Metal washer Supporting strap Plastic washer ML Solo with wall mounting 2 mm (~ 5/64") Allen key ML Solo with ceiling mounting Figure 17: Mounting the ML Solo, wall or ceiling 2591584_EN_1706 ML Systems ML Solo - Direct room humidification...
Page 37
Wall fixture Ceiling fixture 5.1" 8.7" (130 mm) (220 mm) 5.1" (130 mm) 2.8" (70 mm) 2.8" (70 mm) 8.9" (225 mm) Figure 18: Wall and ceiling fixtures 2591584_EN_1706 ML Systems ML Solo - Direct room humidification...
Product specifications 6.5.1 Technical data for ML Solo ML Solo 1 ML Solo 2 Weight 4.4 lb (2 kg) 4.4 lb (2 kg) Size (h x w x d) 7.1 x 5.9 x 6.7 inch 7.1 x 5.9 x 6.7 inch (180 x 150 x 170 mm) (180 x 150 x 170 mm) Noise level...
Declaration of compliance CE - Declaration of Compliance Manufacturer: Condair A/S Technical Manager.: Jesper Lund -Jensen Parallelvej 2 8680 Ry We hereby declare, that the following spray modules for humidification purposes with ML pump systems: ML Solo 1; ML Solo 2 Voltage: 24 VAC 50/60 Hz are manufactured in accordance with the following EC directives: •...
Therefore ML Flex nozzles and tubing are placed in high ceiling areas. Nortec ML Flex is suitable for humidification in industrial and horticultural industry, as well as for dust control in rooms with high dust load, such as the textile industry.
Page 45
The system is built with flexibility in mind, it can be easily designed or dimensioned to suit practically any project. ML Flex System allows you to choose between wall and ceiling mounting. The nozzles are mounted in the T-sections which can be rotated individually. Humidity is produced as water under high pressure (1015 psi (70 bar)) is atomized into micro-sized particles which are instantly absorbed into the surrounding air.
Observe and comply with all local and national codes dealing with water 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 47
Mount the hose connection T-piece. Remember to place the O-ring. Join to flex tubes with T-pieces. Remember the O-rings. The nozzle fixture has to be on top of the assembly to avoid air pockets and to ensure the correct spray direction. The end piece is mounted on the last tube in line.
Page 48
Connect the 1/8" high pressure hose to the hose nipple. Flush the system thoroughly before fitting the nozzles. Please observe that the nozzle pointing towards the wall is fitted with a blind nozzle. 2591584_EN_1706 ML Systems ML Flex - Direct room humidfication...
Page 49
OPTIONAL BALL VALVE If a ball valve is needed this is fitted between high pressure hose coupling and the hose coupling on the flex system. Retighten by use of two fork wrenches NV17 (span of jaws). Ceiling suspension The system is hung up using the same fitting as for wall suspension and by means of either chains or wires.
7.2.2 Inserting the nozzle WARNING! Never unscrew a nozzle on a pressurised unit. Disconnect power to the pump station when working on high-pressure system. CAUTION! Be careful! The threads on the nozzles break easily, the nozzle seals with an O-ring and hence does not need to be tightened very hard, just a little more than you can do by hand.
7.2.3 Water connection High pressure hose Figure 24: Connecting water to ML FLEX The high pressure hose is connected to the ball valve. The hose can be strapped to the chain using cable ties. Avoid vertical U-turns on the hose. This might cause pockets of air in the hose. 7.2.4 Completed assembly Wall fixture...
Page 52
Stainless steel wire Stainless steel chain Ceiling fixture Figure 26: Ceiling mounted ML FLEX 2591584_EN_1706 ML Systems ML Flex - Direct room humidfication...
• Position the Nortec ML Flex atomizers in such a way to enable the atomized mist to spread freely. When the mist is prevented from spreading by obstacles (e.g. ceilings, beams, ventilation ducts, airflow, machinery, etc.), turbulences can build up and condensation may occur as a result.
7.3.1 Positioning clearances Building element, ventilation lighting or similar 20 feet (6 m) 10 feet (3 m) Figure 27: Distances between modules 2591584_EN_1706 ML Systems ML Flex - Direct room humidfication...
Parts and spare parts Some of the following parts and spare parts may only be available in select markets. Contact your local sales representative for more information on pricing and lead times. Item Part No. Standard tubes 9.8 inches (0.25 m) 120 304 007 1.6 ft.
Page 56
Item Part No. End piece with 120 330 007 double nozzles Wall fixture 120 318 000 Ceiling fixture 120 319 000 Fixture for 3/8" tubes 730 020 280 Used when mounting on a support pipe Stainless nozzles 5.5 lb/h (2.5 l/h) 201 020 003 10 lb/h (4.5 l/h) 201 020 001...
Item Part No. Small ball valve 25 78 176 Chain 20 ft. (6 m) 101 101 000 33 ft. (10 m) 101 100 000 328 ft. (100 m) 101 104 000 Product specifications 7.5.1 Technical data for ML Flex Wall / ceiling fixture ≈...
ML UNO - Direct room humidification Figure 28: ML Uno direct room humidification system 2591584_EN_1706 ML Systems ML UNO - Direct room humidification...
General description ML Uno is the smallest unit from Nortec Humiditiy Ltd. The size of the unit is that of a small spot lamp. It is well suited for low-ceilinged rooms, even where a high replacement of air is required, and is because of its invisibility well suited for any purpose.
Mounting brackets Bracket for a single Uno Figure 30: Bracket for mounting on wall Figure 31: Bracket for mounting on ceiling Bracket for two Unos Figure 32: Bracket for mounting on wall Figure 33: Bracket for mounting on ceiling (Min. distance to wall 200 mm) 2591584_EN_1706 ML Systems ML UNO - Direct room humidification...
Solenoid valve (zone valve) General Description If the system consists of several different zones, load permitting, one pump is sufficient to supply all the zones. Each zone must be equipped with a solenoid valve set, which opens when the zone needs humidification and relieves the pressure in the high-pressure hose when the zone stops.
Choosing size and type The maximum flow of the department determines type and combination. Softened water allows for the use of brass valves, while water from reverse osmosis (RO) requires the use of corrosion-proof valves. Surface water with a conductivity less than 50 μS/cm requires the use of corrosion-proof valves. Pressure release hoses Important: Discharge hoses from pressure release valves must be conducted to a free outlet.
ML nozzles 10.1 ML standard nozzles Data source: TD122GB - 03 Description: The ML standard nozzles are specifically designed nozzles of highest quality, which atomizes water under high pressure to millions of microscopic particles sized 5-10 microns, which immediately evaporate in to the surrounding air.
10.2 ML low capacity nozzles Data source: TD116GB - 01 Unique high-technology nozzle from Nortec • Extremely fine atomization • Minimum humidification power • Optimum cooling and humidification effect Description: The nozzle atomizes water under high pressure into millions of microscopic particles in sizes from 5-15 micron, which immediately evaporates into the ambient air.
Page 69
Specifications: Nozzle 3.3 lb/h (1.5 l/h) Capacity 2.6 - 3.3 lb/h (1.2 - 1.5 l/h) Working pressure 507-1015 psi (35 - 70 bar) Material Stainless steel Thread 12/24 UNC/2A Anti-drip valve Standard Filter Standard Requirements for conductivity μS/cm 5 < EC < 80 Part number Part number 103.200.001 Spare parts:...
Allen key. 6) Do not allow the hose to turn around while the insert is being screwed in - use special tool from Nortec and screw in the insert in one long movement.
Page 73
Coupling size 1/16" 13/64 ± 1/64 inch 1/16 ± 1/64 inch Min. 1 3/8 inch 1/32 inch 13/64 inch 31/64 inch (5.0 mm ±0.2 mm) (1.6 mm ±0.2 mm) (Min. 35 mm) (0.8 mm) (5.0 mm) (12.5 mm) 1/8" 9/32 ± 1/64 inch 9/64 ±...
Appendix Humidity sensors Data source: TD150GB-03 B.1.1 HST2-010 HST2-010, item no. 105 501 000 The HST2-010 is an electric sensor for measurement of the relative humidity and temperature in atmos- pheric air. The relative humidity is transformed to a 0-10.0 VDC signal corresponding to 0-100 % RH. Furthermore the HST2-010 has a built in PT1000 temperature sensor element.
Page 80
HST2-10 HST2-420 HST2-10 HST2-420 General specifications Measuring range 0 – 90 % RH Tolerance at 77 °F ±4.5 % RH @ 30 – 80 % RH +/-7 % RH @ 0 to 30 % RH & 80 to 100 % RH Tolerance, +/-5 % RH @ 30 to 80 % RH full temperature range...
B.1.3 DOL114 DOL114, item no. 105 525 000 Product description DOL 114 is a high-precision sensor for measuring relative humidity and temperature. It is intended for application in livestock houses but is also well suited for a number of industrial applications. Figure 47: DOL 114 Important maintenance Clean DOL114 using water and a brush.
Page 82
After the sensor has been exposed to water and condensation, the sensor requires time during which the relative humidity is less than 80% in order to measure correctly. Do not bend the sensor as this would inflict permanent damage on the electronics of the sensor. Dol-sensors reserve the right to change this document and the product herein described without further notice.
Page 83
°C (black) % RH (white) V+ (brown) Supply voltage 11 - 30 VDC GND (blue) Figure 51: Connection Table 1: Signals and wire colors in other products DOL 14 DOL 14 HQ DOL 114 Black = +13-24 VDC White = +13-28 VDC Brown = +11-30 VDC Brown = 0…10 V / %RH Green = 0…10 V / %RH...
Page 84
Humidity Temperature Measuring range 0-100 %RH -40 °F – 140 °F (-40 °C – +60 °C) Accuracy 1 ±2 % RH (40-85 %) ±3 % RH (10-95 %) +50 – 104 °F (40 °C) ±0.9 °F at 21 – 104 °F (40 °C) * at -22 –...
Nozzle swivel adapter (Optional) Using this adapter it is possible to rotate the nozzle in a direction to avoid spraying on other items. Female thread: 12/24 UNC/2B Male thread: 12/24 UNC/2A Swing angle: 50° Angle of rotation: 360° 50° 360° 2 adapters 1 adapter Material: AISI 303...
Page 87
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 warranted, are free from defects in material and workmanship.
Page 88
CONSULTING, SALES AND SERVICE: Nortec Humidity Ltd. 2740 Fenton Road Ottawa, Ontario K1T3T7 Nortec Humidity Inc. 2700 90th Street Sturtevant, Wisconsin 53177 Email: nortec@humidity.com Website: www.humidity.com...