nor-tec ML Series User manual

Humidication and Evaporative Cooling
2591584-A EN 1712
ML HEADS
INSTALLATION GUIDE
Adiabatic humidification system
IMPORTANT! Read and save these instructions. This manual to be left with the equipment.

Thank you for choosing Nortec
Installation date (DD/MM/YYYY):
Commissioning date (DD/MM/YYYY):
Site:
Model:
Serial number:
Contact
Nortec Humidity Ltd.
2740 Fenton Road, Ottawa, ON, Canada K1T 3T7
Phone. 1.866.NORTEC1, Fax [phone]
[e-mail], www.humidity.com
Nortec Humidity Inc.
2700 90th Street
Sturtevant, WI., USA 53177
Phone. 1.866.NORTEC.1, Fax [phone]
[e-mail], www.humidity.com
Manufactured in:
Condair A/S
Parallelvej 2 • 8680 Ry • Denmark
Telephone [phone] • Fax [phone]
VAT no DK15200537
www.condair.com
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.
Liability Notice
Nortec Humidity Ltd. does not accept any liability due to incorrect installation, maintenance or operation of the
equipment, or due to the use of parts/components/equipment that are not authorized by Nortec Humidity Ltd.
Copyright Notice
© Nortec Humidity Ltd., All rights reserved.
Technical modication rights reserved.

Contents
1 Introducion 6
1.1 Before You Start! 6
1.2 General 6
2 For your safety 8
2.1 Safety 8
2.2 Health and hygiene 10
3 Receiving and storage 12
3.1 Inspection 12
3.2 Storage and transportation 12
4 Site planning 14
4.1 Prior to starting 14
4.2 Experts on site 14
5 MLPrincess-Directroomhumidication 15
5.1 General description 15
5.2 Assembly overview 16
5.2.1 Electrical connection 16
5.2.2 Nozzle ring installation 17
5.2.3 Warning label 18
5.2.4 Installation of optional air lter 19
5.3 Placement overview 20
5.3.1 Hose layout for ML Princess 22
5.3.2 Placement of heads 23
5.3.3 Atomization clearances 24
5.4 Mounting the humidier 25
5.4.1 Ceiling installation 25
5.4.2 Connecting water and power 26
5.4.3 Optional - Wall mount 27
5.5 Spare parts 28
5.6 Product specications 29
5.6.1 Technical data for ML Princess 2 29
5.6.2 Technical data for ML Princess 3 29
5.6.3 Technical data for nozzles 30
5.6.4 Technical data for nozzle ring 30
5.6.5 Sound power 30
5.7 Declaration of compliance 31
3Contents
ML Systems 2591584_EN_1706

6 MLSolo-Directroomhumidication 32
6.1 General description 32
6.2 Assembly overview 33
6.2.1 Solo assembly 34
6.2.2 Electrical connection 34
6.3 Mounting the humidier 35
6.3.1 Standard mounting 35
6.4 Placement overview 38
6.4.1 Hose layout for ML Solo 38
6.4.2 Atomization clearances 39
6.4.3 Placement of heads 40
6.5 Product specications 41
6.5.1 Technical data for ML Solo 41
6.5.2 Sound power 41
6.5.3 Nozzle part and size 42
6.5.4 Nozzle specications 42
6.5.5 Accessories 42
6.5.6 Power supply 42
6.6 Declaration of compliance 43
7 MLFlex-Directroomhumidcation 44
7.1 General description 44
7.2 Assembly overview 46
7.2.1 ML Flex Assembly 46
7.2.2 Inserting the nozzle 50
7.2.3 Water connection 51
7.2.4 Completed assembly 51
7.3 Placement overview 53
7.3.1 Positioning clearances 54
7.4 Parts and spare parts 55
7.5 Product specications 57
7.5.1 Technical data for ML Flex 57
7.5.2 Dimensioning 57
8 MLUNO-Directroomhumidication 58
8.1 General description 59
8.2 Technical data 59
8.3 Mounting brackets 60
9 Solenoid valve (zone valve) 61
9.1 General Description 61
9.2 Solenoid valve sets 62
9.2.1 Solenoid valve set 0 - 20.0 gph (0 - 76 l/h) 62
9.2.2 Solenoid valve set 16.0 - 95.0 gph (60 - 360 l/h) 63
9.2.3 Solenoid valve set 31.7 - 475.5 gph (120 - 1800 l/h) 64
9.3 Choosing size and type 65
9.4 Pressure release hoses 65
4Contents 2591584_EN_1706 ML Systems

10 ML nozzles 66
10.1 ML standard nozzles 66
10.2 ML low capacity nozzles 68
A Appendix 70
A.1 Mounting instructions 70
A.2 Stainless steel screw couplings 72
A.3 High pressure hose dimensioning 74
A.4 Installation examples 75
B Appendix 79
B.1 Humidity sensors 79
B.1.1 HST2-010 79
B.1.2 HST2-420 79
B.1.3 DOL114 81
B.2 Nozzle swivel adapter (Optional) 85
5Contents
ML Systems 2591584_EN_1706

6Introducion 2591584_EN_1706 ML Systems
1 Introducion
1.1 Before You Start!
Thank you for purchasing the Nortec ML direct room high pressure adiabatic humidication system.
The Nortec ML adiabatic humidier incorporates the latest technical advances and meets all recognized
safety standards. Never-the-less, improper use of the Nortec ML adiabatic humidier may result in danger
to the user or third parties, and/or damage to property.
To ensure safe, proper and economical operation of the Nortec ML adiabatic humidier, observe and
comply with all information and safety instructions contained in this manual, as well as all relevant docu-
mentation of components of the installed humidication system.
If you have additional questions, contact your local Nortec representative. They will be glad to assist you.
1.2 General
Limitations
The subject of this manual is the Nortec ML systems direct room humidication heads. The various options
and accessories may only be described in-so-far as is necessary for proper installation and operation
of the equipment. Additional information on available options and accessories can be obtained in the
instructions that are supplied with them.
This manual is restricted to the installation, operation, technical data and parts of the Nortec ML direct
room humidication heads, and is intended for well trained personnel who are suitably qualied for their
respective tasks.
Symbols used in this manual
CAUTION!
The catchword "CAUTION" in conjunction with the general caution symbol is used to provide safety
instructions that, if neglected, may cause damage and/or malfunction of the unit or damage to
property.
WARNING!
The catchword "WARNING" in conjunction with the general warning symbol is used to provide
safety instructions that, if neglected, may cause injury to personnel. Other specic warning symbols
may also be used in place of the general symbol.
DANGER!
The catchword "DANGER" in conjunction with the general danger symbol is used to provide safety
instructions that, if neglected, may cause severe injury to personnel or even death. Other specic
danger symbols may also be used in place of the general symbol.

7Introducion
ML Systems 2591584_EN_1706
Other related publications
This manual is supplemented by other publications such as the MLPRO Installation and Operation Manual,
which are included in the delivery of the equipment. Where necessary, appropriate cross-references to
these publications have been added in this manual.
Storage of manual
Keep this manual in a place where it is safe and readily accessible. If the equipment is moved to another
location, make sure that the manual is passed on to the new user. 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.

8For your safety 2591584_EN_1706 ML Systems
2 For your safety
2.1 Safety
DANGER!
Always isolate all supplies to the system before commencing any maintenance or repair.
General
Every person who is tasked with the installation, operation or maintenance of the Nortec ML adiabatic
humidier must read and understand this manual before performing any work. Knowing and understanding
the contents of the installation manual and the operation and maintenance manual is a basic require-
ment for protecting personnel against any kind of danger, preventing faulty operation, and operating the
unit safely and correctly.
All labels, signs and marking applied to the Nortec ML adiabatic humidier must be observed and kept
in a readable state.
Personnelqualications
All procedures described in this manual must only be performed by personnel who are adequately quali-
ed, well trained and are authorized by the customer.
For safety and warranty reasons, any activity beyond the scope of this manual must only be performed
by qualied personnel authorized by Nortec.
All personnel working with the Nortec ML adiabatic humidier must be familiar with, and comply with the
appropriate regulations on workplace safety and prevention of accidents.
Intended use
The Nortec ML humidication heads is intended exclusively for adiabatic humidication and/or evapo-
rative cooling using a Nortec MLP or MLP-RO high pressure pump station within specied operating
conditions (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.
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.

9For your safety
ML Systems 2591584_EN_1706
Safe Operation
If it is suspected that safe operation has been compromised, the ML-System should immediately be shut
down and secured against accidental power-up.
Shut down the Nortec ML Humidication System if:
– Components are damaged, worn or very soiled
– Fans have stopped or are noisy
– Joints, pipes or hoses are leaking
– Unusual or very loud noise
No modications 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.
Touching live parts may cause severe injury or death.
Prevention: Before carrying out any work on the system, disconnect power and water supply.
DANGER!
Poorlymaintainedhumidicationsystemsmaybehazardous.
Prevention: read, understand and follow maintenance guidelines to ensure your system stays safe.
WARNING!
High pressure! When running the system is pressurized at 1015 psi (70 bar). Inappropriately fas-
tened hoses may be forced out of the screw connections when pressurised. Never loosen hoses or
screw connections in a pressurised system.

10 For your safety 2591584_EN_1706 ML Systems
2.2 Health and hygiene
DANGER!
The Nortec ML System must be installed, operated and maintained in accordance with this manual.
Failure to do so could result in contamination that might cause Legionnaires’ disease, which can be
fatal.
DANGER!
To prevent water stagnation and microbial contamination, the systems power supply should be left
switched on. If the system is switched off for more than 48 hours, the pipework and system must be
disinfected as per the instructions, and a full risk assessment must be undertaken to ensure safe
operation.
Health risks
Please observe the local health and safety codes, standards and technical guidance on the control of
Legionella in water systems.
The user is responsible for ensuring that the water system complies with local regulations, bye-laws and
guidelines (such as the HSE ACoP L8, VDI 6022, ISO 22000, HACCP or equivalent). If inadequately
maintained, water systems, of which any humidier is a part, can support the growth of microorganisms,
including the bacterium that causes Legionnaires’ disease.
Nortec ML systems, products and components are produced according to the ISO 22000 standards,
which means that we have considered all aspects of this equipment to reduce the risk of Legionnaires’
disease and other similar conditions. However, the user is responsible for ensuring that the installation,
operation and maintenance work on the equipment is performed in a manner ensuring that the system
stays clean.
Any risks or hazards relating to the system, including during installation and maintenance, should be
identied by a competent health and safety representative who is responsible for introducing effective
control measures.
Water monitoring
The quality of water being used in the Nortec ML Humidication System should be checked prior to
system commissioning and comply with the guidelines in the high pressure pump manual.
The Nortec ML Humidication System must be monitored for hygiene as part of the maintenance pro-
gram. Please refer to the maintenance section for further guidance.