Nortec EL005, EL020, EL030, EL050, EL075 Installation Manual

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INSTALLATION MANUAL
Electrode Steam Humidifier Nortec EL Series
2582302_C_EN_1611
Humidication and Evaporative Cooling
IMPORTANT! Read and save these instructions. This manual to be left with the equipment.
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Installation date (DD/MM/YYYY):
Commissioning date (DD/MM/YYYY):
Site:
Model:
Serial number:
Manufacturer
Nortec Humidity Ltd. 2740 Fenton Road, Ottawa, ON, Canada K1T 3T7 Tel. 1.866.NORTEC1, Fax 613.822.7964 nortec@humidity.com, www.humidity.com
Proprietary Notice
This document and the information disclosed herein are proprietary data of Nortec Humidity Ltd. Neither this docu­ment, 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
Copyright 2016, Nortec Humidity Ltd, All rights reserved.
Technical modication rights reserved.
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iiiContents
Nortec EL
2582302_C_EN_1611
Contents
1 Introduction 1
1.1 Before You Start! 1
1.2 General 1
2 For Your Safety 3
3 Receiving and Storage 5
3.1 Inspection 5
3.2 Storage and Transportation 5
4 Product Overview 7
4.1 General Description 7
4.2 Models Overview 8
4.3 Model Designation 8
4.4 Options 9
4.5 Accessories 10
5 Installation 11
5.1 General 11
5.2 Installation Overview 12
5.2.1 Typical Installation for Duct Humidication 12
5.2.2 Typical Installation for Direct Room Humidication 14
5.3 Site Requirements 15
5.4 Mounting the Humidier 16
5.4.1 Location and Clearances 16
5.4.2 Standard Mounting 18
5.4.3 Mounting Using Optional Mounting Bar 20
5.4.4 Mounting to OSHPD Seismic Requirements 22
5.4.5 Mounting Checklist 24
5.5 Steam Line Connections 24
5.5.1 Steam Distribution Using the Air Handling Unit 24
5.5.2 Steam Distribution Using the Blower Pack 24
5.5.2.1 Placement of Humidier 24
5.5.2.2 Remote-Mounted Blower Pack 25
5.5.3 Best Practices for Installing Steam and Condensate Lines 26
5.5.3.1 Common Steam and Condensate Line Installation Mistakes 34
5.5.4 Steam Connections Checklist 35
5.6 Water Connections 36
5.6.1 Water Connections Overview 36
5.6.2 Water Connection Requirements 38
5.6.3 Water Connections Checklist 38
5.7 Humidity Control Systems 39
5.7.1 Control Device Locations 39
5.7.2 Permissible Control Signal Inputs 39
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iv Contents
2582302_C_EN_1611 Nortec EL
5.8 Electrical Connections 40
5.8.1 General 40
5.8.2 Wiring Diagrams 41
5.8.2.1 Nortec EL Steam Humidier, Steam Cylinder A 41
5.8.2.2 Nortec EL Steam Humidier, Steam Cylinder B (Large Units Only) 43
5.8.3 External Connections 44
5.8.3.1 3-Phase Power Supply Connection 44
5.8.3.2 Single-Phase Power Supply Connection 45
5.8.3.3 External Safety Chain 46
5.8.3.4 Modulating Demand or Humidity Signal 47
5.8.3.5 Ohmic Humidity Controller (Passive) 48
5.8.3.6 24V On/Off Humidistat 49
5.8.3.7 External On/Off Input 49
5.8.3.8 Dual Steam Cylinders Control Wiring 50
5.8.3.9 Remote Relay PCB Connections 51
5.8.3.10 Accessory Relay PCB Connections 52
5.8.3.11 Modbus Connection 53
5.8.4 Connecting Multiple Units Using Linkup 54
5.8.5 Maximum External Fuse 55
5.8.6 Electrical Connections Checklist 57
6 ProductSpecications 59
6.1 Weights 59
6.2 Dimensions 60
A Appendix i
A.1 Installation Checklist i
B Appendix iii
B.1 Commissioning Checklist iii B.1.1 Pre-Start-Up Checklist iii B.1.2 Performance Checklist vi
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1Introduction
Nortec EL
2582302_C_EN_1611
1 Introduction
1.1 Before You Start!
Thank you for purchasing the Nortec EL steam humidier.
The Nortec EL steam humidier incorporates the latest technical advances and meets all recognized safety standards. Never-the-less, improper use of the Nortec EL steam 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 EL steam humidier, observe and comply with all information and safety instructions contained in this manual, as well as all relevant documenta­tion 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 EL steam humidier. 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 of the Nortec EL steam humidier, and is intended for well trained personnel who are suitably qualied for their respective tasks.
Symbols Used in This Manual
CAUTION!
The word "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 word "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 word "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.
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2 Introduction
2582302_C_EN_1611 Nortec EL
Other Related Publications
This installation manual is supplemented by other publications such as the operation and maintenance manual, spare parts list, etc., 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 local Nortec representative for a replacement copy.
.
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3For Your Safety
Nortec EL
2582302_C_EN_1611
2 For Your Safety
General
Every person who is tasked with the installation of the Nortec EL steam 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 requirement 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 EL steam 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 EL steam humidier must be familiar with, and comply with the appropriate regulations on workplace safety and prevention of accidents.
Intended Use
The Nortec EL steam humidier is intended exclusively for air humidication using a Nortec-approved steam distributor or blower pack within specied operating conditions (refer to the Operation and Maintenance Manual 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.
DangersthatmayarisefromtheNortecELsteamhumidier:
DANGER! Risk of electric shock!
The NortecELsteamhumidierismainspowered.Livepartsmaybeexposedwhenthedoor panels are removed. Touching live parts may cause severe injury or even death.
Prevention: The Nortec EL steam humidier must be connected to the mains only after all installa-
tion work has been completed, checked for correct workmanship, and the door panels are installed and fastened securely.
WARNING! Risk of severe burns from exposure to hot steam vapors!
The Nortec EL steam humidier uses hot steam vapors for humidication. Bare skin exposed to hot steam vapors can result in severe burns.
Prevention: Avoid contact with hot steam. Or, wear appropriate personal protective equipment when working near steam vapors.
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4 For Your Safety
2582302_C_EN_1611 Nortec EL
Preventing Unsafe Operation
All personnel working with the Nortec EL steam humidier must immediately report to the customer any alterations to the unit that may affect safety, and securethehumidieragainstaccidentalpower-up.
ModicationstotheUnitProhibited
Modicationsarenotpermitted on the Nortec EL steam humidier without the express written consent
of Nortec.
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5Receiving and Storage
Nortec EL
2582302_C_EN_1611
3 Receiving and Storage
3.1 Inspection
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.
Check the goods against the packing slip to ensure that all items have been delivered.
Report any shortages to your Nortec representative within 48 hours of receipt of the goods. Nortec does not assume responsibilities for any shortages beyond this period.
Unpack the parts/components and check for any damage.
If parts/components are damaged, notify the shipping company immediately.
Verify the model type on the rating label to ensure that it is suitable for your installation. Refer to
Figure 3 on page 9.
3.2 Storage and Transportation
Storage
Store the Nortec EL steam humidier in its original packaging inside a protected area that meets the following requirements until it is installed, or if it needs to be stored for an extended period of time:
Room temperature: 41 to 104 °F (5 to 40 °C)
Room humidity: 10 to 75% RH
Transportation
For optimum protection always transport the unit and components in their original packaging, and use appropriate lifting/transporting devices.
Packaging
Keep the original packaging of the unit/components for later use.
If the packaging needs to be disposed off, observe local regulations on waste disposal. Recycle pack­aging where possible.
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6 Receiving and Storage
2582302_C_EN_1611 Nortec EL
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7Product Overview
Nortec EL
2582302_C_EN_1611
4 Product Overview
4.1 General Description
The Nortec EL steam humidier is an advanced electrode steam humidier with state-of-the-art features. It has an integrated controller which not only controls the humidier, but also allows the humidier to be connected to a building automation system, or an off-line computer, so it can be controlled and moni­tored remotely.
The Nortec EL steam humidier comes in three different housing sizes depending on the steam capac­ity. Refer to Figure 1. These units can range from 5 lb/h (2.2 kg/h) to 200 lb/h (91 kg/h) – refer to "Models
Overview" on page 8. Models with steam capacity up to 100 lb/h (45 kg/h) can also be ordered with a
built-on blower pack. The large models, with steam capacity from 150 lb/h (68 kg/h) to 200 lb/h (91 kg/h), are equipped with dual steam cylinders – each with its own dedicated driver board.
The dedicated driver boards in the large models allow the steam cylinders to be congured to operate in series, in parallel or independent mode. Two separate sets of control signals are needed for independ­ent mode of operation. In series mode, the output capacity of steam cylinder "A" is congured to 0-50% of humidier demand, and steam cylinder "B" to 50-100% of humidier demand. In parallel mode, the output capacity of each steam cylinder is congured to 0-100% of humidier demand.
In addition, up to six integrated controllers (for a maximum of 12 steam cylinders) can be set up in a "main-extension" conguration using Nortec's Linkup system to satisfy large humidication needs.
Figure 1:
1
2
3
4
Nortec EL Steam Humidier Model Sizes
1 Small model, steam cylinder "A" only 2 Medium model, steam cylinder "A" only 3 Large model, steam cylinder "B" 4 Large model, steam cylinder "A"
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8 Product Overview
2582302_C_EN_1611 Nortec EL
4.2 Models Overview
The Nortec EL steam humidier is available in different sizes (S, M and L) with different heating voltages and steam capacities as shown in Table 1 below.
Table 1: Nortec EL Steam Humidier Models
Housing
Size
Nortec EL
Model
110-
120V/1~
208V/1~
220-
240V/1~
277V/1~
380-
415V/1~
440-
480V/1~
550-
600V/1~
208V/3~
220-
240V/3~
380V/3~
440-
480V/3~
550-
600V/3~
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
lb/h
(kg/h)
S 005 5
(2.2)
010 10
(4.5)10(4.5)10(4.5)10(4.5)10(4.5)10(4.5)
020 20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
030 30
(13.6)30(13.6)30(13.6)30(13.6)30(13.6)
M 050 50
(22.7)50(22.7)50(22.7)50(22.7)50(22.7)
075 75
(34)75(34)75(34)75(34)75(34)
100 90
(41)
100
(45)
100
(45)
100
(45)
100
(45)
L 150* 150
(68)
150
(68)
150
(68)
150
(68)
150
(68)
200* 180
(82)
200
(91)
200
(91)
200
(91)
200
(91)
* These models have two steam cylinders.
4.3 Model Designation
The specication label on the side (and the underside) of the Nortec EL steam humidier shows its model number, serial number and ratings – refer to Figure 3 on page 9. The breakdown of the model number is shown in Figure 2. For other details of the specication label refer to the Operation and Maintenance Manual.
Figure 2:
Nortec EL 100 400V/3~Space
Product series:
Steam capacity (lb/h):
Model:
Blank = Duct Space = with Blower Pack RMBP = with power for remote-mounted Blower Pack
Heating voltage and phase:
Model Breakdown
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9Product Overview
Nortec EL
2582302_C_EN_1611
Figure 3:
Circuit Protection
MADE IN CANADA
HUMIDIFIER
LISTED
205X
MODEL:
VOLTS: AMPS: KW:
MAX:
XXXXXXXXXXXXXXXXXXXXXXXX
S/N:
XXXXXXX
XXXXXXXXXXXX
PHASE:
XXXX
HZ:
XXXXXX
XXXXX
XXXXXXXXX
XXX
DATE:
XXXXXXXXX
XXXXXXXX B
AMPS
Nortec EL Steam Humidier Specication Label
4.4 Options
Table 2 shows the list of options for the Nortec EL steam humidier. Contact your Nortec representative
for details.
Table 2: Nortec EL Options
Option Application
Mounting bar Provides two mounting bars which t into each other for wall mounting. One bar is fastened
to the humidier, the other bar is fastened to the wall. The unit can be hung onto the wall by engaging the two mounting bars. Note: The unit can also be wall mounted (without this op­tion) using the keyhole cutouts on the back of the humidier housing.
Mounting rack Stand-alone rack for mounting the Nortec EL steam humidier.
Remote fault indication PCB (printed circuit board)
Printed circuit board with relay contacts for connecting remote status displays for “Unit On”, “Steam”, “Error” and “Service”.
Accessory relay PCB (printed circuit board)
Printed circuit board with relay contacts for connecting other accessories such as fans and supply water ushing valves.
Internal primary fusing Optional internal fuse for heating voltage power supply. Only available as a factory-installed
option. Note: This is not a substitute for a dedicated external disconnect switch.
Fill cup extension Kit for extending the ll cup so the humidier can accommodate backpressure of up to
10 in H20 (2.49 kPa).
Extreme drain water cooling Kit for cooling drain water to less than 120°F (49°C) before it is discharged into the drain.
Foam detection kit Kit for extending the ability of the humidier to handle a wider range of water supply quality.
BACnet MSTP BTL PCB to provide BTL certied BACnet MSTP. This option also enables full Master functionality
when using BACnet MSTP.
BACnet IP BTL PCB to provide BTL certied BACnet IP.
LonWorks board Supplementary board to connect the Nortec EL to a building management system using
LonWorks.
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10 Product Overview
2582302_C_EN_1611 Nortec EL
Option Application
Remote blower pack power kit
When a remote blower pack is being installed with the humidier, this option provides a transformer, fusing, and a terminal block inside the humidier to provide power to the remote blower pack. Without this option, a separate 110-120V supply must be provided for the remote blower pack.
4.5 Accessories
Table 3 shows the list of accessories for the Nortec EL steam humidier. Contact your Nortec representative
for details. To install and operate the accessories, refer to the instructions supplied with the accessories.
Table 3: Nortec EL Accessories
Accessory Application
Steam distributor Steam distribution system for use in an air duct.
SAM-e steam distribution manifold
Steam distribution system for use in an air duct where reduced absorption distance is re­quired.
Blower pack, built-on or
remote
For direct room humidication or use in conditioned spaces without a built-in air distribution system. The EL Space model has a blower pack mounted directly, the EL RMBP model has power for a remote-mounted blower pack (blower pack ordered as an accessory).
Digital or analog control humidistat with either On/Off or modulating operation
Input device used to meter the output of the humidier based on the sensed relative humidity. The humidistat can be installed in the conditioned space that is being humidied, or within the duct.
Digital RH transducer Input device used to communicate the relative humidity in a conditioned space or a duct to
the humidier.
Digital or analog high limit humidistat with either On/Off or modulating operation
Input device used to limit the output of the humidier by either shutting it down or throttling it down when the humidity in the duct approaches the high limit.
Air proving switch Input device to ensure that humidication only occurs when air is moving through the duct.
Outdoor temperature sensor Input device used to communicate the outdoor temperature to the humidistat so that it can
lower the setpoint value during cold weather to prevent condensation on exterior windows/ surfaces.
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11Installation
Nortec EL
2582302_C_EN_1611
5 Installation
5.1 General
Strictly observe and perform all installation tasks including the mounting of the unit and connection of the water, steam and power supplies as described in this manual.
Observe and comply with all local and national codes dealing with water, steam and electrical installations.
Nortec does not accept any liability for installation of humidication equipment by unqualied personnel, or the use of equipment/parts that are not authorized by Nortec.
PersonnelQualications
All installation work must be performed only by licensed personnel authorized by the customer. It is the customer’s responsibility to verify qualications of the personnel.
Safety
Observe the following safety precautions:
DANGER! Risk of electric shock!
The Nortechumidierismainspowered.Livepartsmaybeexposedwhenthedoorpanels are open. Touching live parts may cause severe injury or even death.
Prevention: The Nortec humidier must be connected to the mains only after all installation work
has been completed, checked for correct workmanship, and the door panels are closed and fas­tened securely.
CAUTION! Risk of damage to internal components from electrostatic discharge (ESD)!
Theelectroniccomponentsinsidethehumidieraresensitivetoelectrostaticdischarge
(ESD).
Prevention: Take appropriate measures to protect the electronic components inside the unit against damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.
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12 Installation
2582302_C_EN_1611 Nortec EL
5.2 Installation Overview
The Nortec EL humidier can use a steam distributor to distribute steam through air ducts – refer to
Figure 4. The humidier can also use a blower pack to distribute steam directly into a conditioned space
– refer to Figure 5 on page 14.
5.2.1 TypicalInstallationforDuctHumidication
Figure 4:
min. 10 ft (3m)
B or min. 8-10 ft (2.4-3m)
n
1, 2
4
5
6
7
8
9
10
12
13
2, 3
11
Typical Installation for Duct Humidication
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13Installation
Nortec EL
2582302_C_EN_1611
Legend: 1 High limit On/Off humidistat (external safety chain) 2 Humidity sensor or modulating humidistat (used for control of space in return duct, or high limit in supply duct) 3 On/Off humidistat (used for humidity control) 4 Steam line (see Note 1 below) 5 Electrical disconnect, high voltage supply 6 Drain line (see Note 2 below) 7 Air gap with optional trap (see Note 3 below) 8 Water supply (see Note 4 below) 9 Condensate line (see Note 5 below) 10 Steam distributor (see Note 6 below) 11 Air proving switch (external safety chain) 12 Supply air duct 13 Return air duct
Note1: The steam line should be as short as possible – the maximum length varies depending on unit capacity and material used (refer to Table 6 on page 28). The steam line should have adequate upslope (minimum 10°) /downslope (minimum 2°), without restrictions and with a condensate trap at the lowest point. Steam traps are required every 15 ft (5 m) for long runs. The steam line must rise a minimum of 12 in (30 cm) straight up before running to the steam distributor. The minimum bend radius for steam hose is 12 in (30 cm), or 5× the internal diameter for rigid pipes. Refer to Table 6 on page 28 for steam line recommendations.
Note2: The drain line should have a minimum internal diameter of 7/8 in (22 mm), with a constant minimum downslope of 1 in/48 in (1.2°) to the funnel, and must not touch the sides or bottom of funnel.
Note3: The air gap and trap should be located to the left of the humidier, as shown. A 2-1/2 in to 7/8 in (63.5 mm to 22 mm) reducer is ideal (Nortec option P/N 2522172). The hose must not touch the bottom of the funnel.
Note4: Water supply should be potable drinking water, with conductivity of 150-1200 micro-siemens/ cm (0-12 gpg). The water supply line should have a minimum diameter of 1/2 in (13 mm) with a shutoff valve. An optional 5 μm lter is also recommended. Water temperature should be 34-104°F (1-40°C). Pressure should be surge-free and regulated to 30-80 psig (207-550 kPa).
Note5: Condensate drain line from the steam distributor should have a constant minimum downslope of 1 in/48 in (1.2°), with no restrictions and a minimum trap height of 8 in (200 mm). The trap should be located a minimum of 12 in (30 cm) below the steam distributor.
Note6: The distance from the steam distributor to any obstruction or transition in the duct should be equal to the calculated absorption distance B
n
or a minimum of 8-10 ft (2.4-3 m) if Bn is not known. For details refer to the installation manual for the relevant steam distribution system. The absorption distance can be obtained using Nortec HELP. The steam distributor capacity must equal or exceed the maximum capacity of the humidier.
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14 Installation
2582302_C_EN_1611 Nortec EL
5.2.2 TypicalInstallationforDirectRoomHumidication
Figure 5:
1
2
3
4
5, 6
7
8
9
10
11
12
Typical Installation for Direct Room Humidication
1 Blower pack, remote-mounted 2 Steam line (see Note 1 below) 3 Blower pack, built-on 4 High level On/Off humidistat (external safety chain) 5 Humidity sensor or humidistat (used for control of space humidity or high limit) 6 On/Off humidity control 7 Electrical disconnect, high voltage supply 8 Drain line (see Note 2 below) 9 Air gap with optional trap (see Note 3 below) 10 Water supply (see Note 4 below) 11 Condensate drain line (routed to oor drain, see Note 5 below) 12 Condensate drain connection through ll cup to steam cylinder (for remote blower pack)
Note1: The steam line should be as short as possible – the maximum length varies depending on unit capacity and material used (refer to Table 6 on page 28). The steam line should have adequate upslope (minimum 10°) /downslope (minimum 2°), without restrictions and with a condensate trap at the lowest point. Steam traps are required every 15 ft (5 m) for long runs. The steam line must rise a minimum of 12 in (30 cm) straight up before running to the steam distributor. The minimum bend radius for steam hose is 12 in (30 cm), or 5× the internal diameter for rigid pipes. Refer to Table 6 on page 28 for steam line recommendations.
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15Installation
Nortec EL
2582302_C_EN_1611
Note2: The drain line should have a minimum internal diameter of 7/8 in (22 mm), with a constant mini­mum downslope of 1 in/48 in (1.2°) to the funnel, and must not touch the side or bottom of the funnel.
Note3: The air gap and trap should be located to the left of the humidier, as shown. A 2-1/2 in to 7/8 in (63.5 mm to 22 mm) reducer is ideal (Nortec option P/N 2522172). The hose must not touch the bottom of the funnel.
Note4: Water supply should be potable drinking water, with conductivity of 150-1200 micro-siemens/ cm (0-12 gpg). The water supply line should have a minimum diameter of 1/2 in (13 mm) with a shutoff valve. An optional 5 μm lter is also recommended. Water temperature should be 34-104°F (1-40°C). Pressure should be surge-free and regulated to 30-80 psig (207-550 kPa).
Note5: For remote-mounted blower pack, the condensate line can be routed to either an external drain or to the ll cup of the humidier. The condensate drain line from the blower pack should have a constant minimum downslope of 1 in/48 in (1.2°), with no restrictions and a minimum trap height of 8 in (200 mm). The trap should be located a minimum of 12 in (30 cm) below the condensate port on the blower pack.
5.3 Site Requirements
In preparation for installation of the Nortec EL steam humidier, make sure that the following site require­ments are satised. Report any discrepancies to the site engineer.
SteamandCondensateLines:
 When choosing the location of the humidier, install it as close as possible to the steam distributor
to minimize heat loss through the steam line.
 When possible, install the humidier below the steam distributor. Make sure that the selected loca-
tion permits proper routing of steam and condensate lines as described in "Best Practices for Installing
Steam and Condensate Lines" on page 26.
Mounting
 Allow adequate clearances around the humidier for ease of maintenance. Although the
Nortec EL steam humidier requires no side clearance, Nortec recommends minimum clearances of 6 in (150 mm) on the side. A 24 in (610 mm) clearance between the humidier and the ground is required. Observe all local and national installation codes. Nortec is not responsible for any instal­lation code violations.
 Do not mount the humidier on hot surfaces, or surfaces that can freeze, or near vibrating compo-
nents, or on the oor. In addition, the mounting surface must be able to withstand temperatures of 140-158°F (60-70°C) that can be generated during operation of the humidier.
 The humidier should be mounted on a wall or other suitable surface that offers a sufciently high
load-bearing capacity. Refer to Table 15 on page 59 for operating weights.
 The Nortec EL steam humidier should be installed in a drip-proof location within buildings, where
the ambient temperature is 41-104°F (5-40°C) and the relative humidity is 5-95% (non-condensing).
Water Supply
 The water supply to the humidier must be cold potable drinking water, and not reverse osmosis
(RO) or deionized (DI) water. The water quality requirements are listed in Table 4 below.
Table 4: Water Quality Requirements
Conductivity
(μS/cm)
Hardness
(gpg)
Silica (ppm)
Alkalinity
(pH)
150-1200* 0-12 0-4 7-7.5
0-3 4-14
* Default humidier conguration supports approximately 330-670 μS/cm.
 The water supply should have a minimum ow rate of 0.9 gpm (3.3 L/min), and should be pressure
regulated to 30-80 psig (207-550 kPa), with spike pressure limited to 120 psig (827 kPa).
 The water supply should be ltered to 5 μm (optional, but recommended).
Page 20
16 Installation
2582302_C_EN_1611 Nortec EL
Water temperature should be 34-104°F (1-40°C).
The diameter of the water supply piping should be minimum 1/2 in (13 mm), and must have a 1/2 in
NPT female end.
 The water supply line should be made of copper, stainless steel or plastic certied for drinking water
systems.
A shutoff valve and a union tting must be supplied in the water supply line for ease of maintenance.
The water supply should be free of additives such as corrosion inhibitors, disinfectants, etc., which
may affect the performance of the humidier. If using softened or partially softened water, contact your Nortec representative for assistance.
Drainage
 The humidier should be connected to a dedicated building drain (recommended) with a minimum
drainage rate of 2.3 gal/min (8.7 L/min) per steam cylinder. For safety reasons, drain water from the humidier should not empty into a sink used by personnel. The drain line must allow free and easy draining. A restricted drain can cause water in the humidier to over-concentrate and result in poor operation, or cause water to back up at the air gap funnel.
 The building drain pipe should be made of either copper or stainless steel (minimum DIN 1.4301)
so it can handle drain water temperatures up to 212 °F (100 °C).
 The space in which the humidier is to be installed should have a oor drain. However, if a oor drain
is not available, a leakage monitoring device must be installed (by others) to permit interruption of the water supply in case of a leakage.
Power Supply
 The power supply to the humidier should be adequate to match the full voltage and current draw
shown on the specication label of the humidier.
 The power supply must have an external dedicated fused disconnect switch. The fusing must not
exceed the maximum circuit protection indicated on the specication label. Refer to Figure 3 on page 9.
5.4 MountingtheHumidier
Refer to "Site Requirements" on page 15 for the location and mounting requirements for the Nortec EL steam humidier.
5.4.1 Location and Clearances
The location of the humidier depends largely on the steam distribution system. For the required minimum clearances for a Nortec EL steam humidier with a built-on blower pack refer to "Placement of Humidier" on
page 24; or refer to the blower pack manual for a remote-mounted blower pack.
For all other steam distribution systems refer to Figure 6. The clearance dimensions shown are for refer­ence only, and are suggested clearances for ease of maintenance. Consult local and national installation codes. Nortec does not accept responsibility for violations of the installation codes.
Page 21
17Installation
Nortec EL
2582302_C_EN_1611
Figure 6:
W
D
H
0 in (0 mm)
min. 24 in
(610 mm)
min. 12 in
(300 mm)
min. 36 in
(915 mm)
0 in (0 mm)
Nortec EL Humidier Suggested Clearances
Page 22
18 Installation
2582302_C_EN_1611 Nortec EL
5.4.2 Standard Mounting
Locate the Nortec EL humidier according to "Location and Clearances" on page 16, and install it on the mounting surface as follows:
1. Locate 2×4 wooden studs or equivalent support in the mounting surface, and mark the attachment points “A” and “B” at the desired position with the help of a level. For small or medium housing refer to Figure 7. For large housing refer to Figure 8 on page 19.
Figure 7:
A
A
B
B
X
Y
1
Standard Mounting, Small or Medium Housing
1 Lag bolt, 1/4×2 in (×4)
Dimension
Housing Size
Small Medium
X 12.0 in
(305 mm)
16.0 in
(406 mm)
Y 17.56 in
(446 mm)
20.71 in
(526 mm)
Page 23
19Installation
Nortec EL
2582302_C_EN_1611
Figure 8:
X
A
A
A
B
B
B
X
Y
1
Standard Mounting, Large Housing
1 Lag bolt, 1/4×2 in (×6)
2. Install 1/4×2 in lag bolts (supplied by others) at attachment points "A". Use longer screws if going through drywall or other structural material into the mounting surface. Allow the heads of the screws to extend 0.25 in (5 mm) from the mounting surface so that the humidier can be installed on the bolts.
3. Remove the door panels from the humidier.
WARNING! Heavy object – risk of injury!
Thesmallhumidierweighs45lb(20kg),andthelargehumidierweights120lb(54kg).
Prevention: Use an appropriate lifting device, or request assistance to raise the humidier into
position.
4. Carefully raise and install the humidier onto the installed lag bolts.
5. Align the humidier with the help of a level, then tighten the lag bolts.
6. Install additional lag bolts (supplied by others) into the mounting surface at attachment points “B”, and fasten securely.
7. Reinstall the door panels, and fasten them securely.
Dimension
Housing Size
Large
X 16.0 in
(406 mm)
Y 16.75 in
(426 mm)
Page 24
20 Installation
2582302_C_EN_1611 Nortec EL
5.4.3 Mounting Using Optional Mounting Bar
Locate the Nortec EL humidier according to "Location and Clearances" on page 16, and install it on the mounting surface as follows using the optional mounting bar. Mounting bars are a factory-installed option. If ordered, the corresponding bars and bumpers will be riveted/installed to the housing at the factory.
1. Locate 2×4 wooden studs or equivalent support in the mounting surface, and mark the attachment points “A” at the desired position with the help of a level. For small or medium housing refer to Figure 9. For large housing refer to Figure 10 on page 21.
Figure 9:
X
A
A
A
X
1
2
3
4
Optional Mounting, Small or Medium Housing
1 Mounting bar 2 Flat washer (×3) 3 Lag bolt, 1/4×2 in (×3) 4 Screw, M6×10 (×1), supplied
Dimension
Housing Size
Small Medium
X 6.0 in
(152 mm)
8.0 in
(203 mm)
Page 25
21Installation
Nortec EL
2582302_C_EN_1611
Figure 10:
X
A
X
A
A
1
2
3
4
Optional Mounting, Large Housing
1 Mounting bar 2 Flat washer (×3) 3 Lag bolt, 1/4×2 in (×3) 4 Screw, M6×10 (×1), supplied
2. Align the holes in the mounting bar with the marks for the attachment points "A", and install the mounting bar on the mounting surface with 1/4×2 in lag bolts and at washers (supplied by others). Use longer bolts if going through drywall or other structural material into the mounting surface. Level the mounting bar before tightening the lag bolts.
3. Remove the door panels from the humidier.
WARNING! Heavy object – risk of injury!
Thesmallhumidierweighs45lb(20kg),andthelargehumidierweights120lb(54kg).
Prevention: Use an appropriate lifting device, or request assistance to raise the humidier into
position.
4. Carefully raise the humidier into position, and hang it on the mounting bar.
5. Secure the humidier to the mounting bar with the M6×10 screw (supplied), and fasten securely.
6. Reinstall the door panels, and fasten them securely.
Dimension
Housing Size
Large
X 16.0 in
(406 mm)
Page 26
22 Installation
2582302_C_EN_1611 Nortec EL
5.4.4 Mounting to OSHPD Seismic Requirements
The Nortec EL is certied to OSHPD seismic requirements in its standard conguration (reference OSP­0225-10); no additional kits are required. The humidier must be mounted as per the instructions in this section in order to fulll the seismic requirements.
Locate the Nortec EL humidier according to "Location and Clearances" on page 16, and secure it to double­layered 3/4 in (20 mm) thick plywood (or equivalent) as follows:
1. Secure the double-layered 3/4 in (20 mm) plywood sheets to the selected mounting surface.
2. Mark the attachment points “A” and "B" at the desired position on the plywood sheets (or equivalent) with the help of a level. For small or medium housing refer to Figure 11. For large housing refer to
Figure 12 on page 23.
3. Install 3/8×2 in grade B5 (or equivalent) lag bolts and at washers (supplied by others) at attachment points "A". Allow the heads of the screws to extend 0.25 in (5 mm) from the mounting surface so that the humidier can be installed on the bolts.
Figure 11:
A
A
B
B
X
Y
2
3
1
Optional Seismic Mounting, Small or Medium Housing
1 Lag bolt, 3/8×2 in, grade B5 (×4) 2 Flat washer (×4) 3 3/4 in (20 mm) double-layer plywood sheet (or equivalent)
Dimension
Housing Size
Small Medium
X 12.0 in
(305 mm)
16.0 in
(406 mm)
Y 17.56 in
(446 mm)
20.71 in
(526 mm)
Page 27
23Installation
Nortec EL
2582302_C_EN_1611
Figure 12:
X
A
A
A
B
B
B
X
Y
1
2
3
Optional Seismic Mounting, Large Housing
1 Lag bolt, 3/8×2 in, grade B5 (×6) 2 Flat washer (×6) 3 3/4 in (20 mm) double-layer plywood sheet (or equivalent)
4. Remove the door panels from the humidier.
5. Enlarge the mounting holes in the rear of the cabinet to accommodate the 3/8×2 in lag bolts.
WARNING! Heavy object – risk of injury!
Thesmallhumidierweighs45lb(20kg),andthelargehumidierweights120lb(54kg).
Prevention: Use an appropriate lifting device, or request assistance to raise the humidier into
position.
6. Carefully raise and install the humidier onto the installed lag bolts.
7. Align the humidier with the help of a level, then tighten the lag bolts.
8. Install additional grade B5 (or equivalent) lag bolts and at washers (supplied by others) into the plywood sheet (or equivalent) at attachment points “B”, and fasten securely.
9. Reinstall the door panels, and fasten them securely.
Dimension
Housing Size
Large
X 16.0 in
(406 mm)
Y 16.75 in
(426 mm)
Page 28
24 Installation
2582302_C_EN_1611 Nortec EL
5.4.5 Mounting Checklist
Check the following to ensure that the humidier has been mounted correctly:
Unit installed in the correct location (according to "Location and Clearances" on page 16)?
Mounting surface stable, and capable of supporting the full operating weight of the humidier?
Unit level?
Unit fastened securely?
5.5 Steam Line Connections
Steam generated by the Nortec EL humidier is not pressurized, but is delivered at atmospheric pressure. It can be distributed directly into a conditioned space with a built-on or remote-mounted blower pack, or into an AHU (air handling unit) using Nortec steam distributors or Nortec SAM-e steam distribution manifold.
Read "Best Practices for Installing Steam and Condensate Lines" on page 26 before installing steam lines.
5.5.1 Steam Distribution Using the Air Handling Unit
For placement of the steam distributor or SAM-e steam distribution manifold in the air handling unit, as well as best practices and installation procedures, refer to their installation manuals.
5.5.2 Steam Distribution Using the Blower Pack
5.5.2.1 PlacementofHumidier
Figure 13 on page 25 and Table 5 show the minimum clearances required for installation of a
Nortec EL steam humidier with a built-on Nortec blower pack.
Table 5: Minimum Clearances
Blower Pack
Capacity
5 lb/h
(2.3 kg/h)
10 lb/h
(4.5 kg/h)
20 lb/h
(9kg/h)
30 lb/h
(13.6 kg/h)
50 lb/h
(22.7 kg/h)
75 lb/h
(34.0 kg/h)
100 lb/h
(45.4 kg/h)
Low Speed
Dimension "A" (minimum), Low speed 9 in
(0.23 m)
18 in
(0.46 m)
75 in
(1.91 m)
86 in
(2.19 m)
174 in
(4.42 m)
189 in
(4.81 m)
248 in
(6.3 m)
Dimension "B" (minimum), Low speed 12 in
(0.31 m)
48 in
(1.22 m)
84 in
(2.14 m)
High Speed
Dimension "A" (minimum), High speed 6 in
(0.16 m)
60 in
(1.53 m)
71 in
(1.81 m)
132 in
(3.36 in)
153 in
(3.89 m)
218 in
(5.54 m)
Dimension "B" (minimum), High speed 12 in
(0.31 m)
Dimension "C" (minimum) 90 in
(2.3 m)
Dimension "D" (suggested) 12 in
(0.31 m)
30 in
(0.77 m)
Note:
The values in Table 5 are based on the following nominal conditions: 72°F (22˚C), 40% RH. Blower pack should not be installed near cold surfaces or where dew point may be reached. Higher humidity or lower room temperature (compared to nominal conditions stated above) will require increased clearances.
Page 29
25Installation
Nortec EL
2582302_C_EN_1611
Figure 13: Clearance Requirements for
B
C
D
D
A
Nortec EL Humidier with Built-on Blower Pack
5.5.2.2 Remote-MountedBlowerPack
For the installation requirements and installation procedure for the remote-mounted blower pack, refer to the blower pack manual.
Page 30
26 Installation
2582302_C_EN_1611 Nortec EL
5.5.3 Best Practices for Installing Steam and Condensate Lines
Nortec recommends that you observe the following best practices for installing atmospheric steam lines and condensate lines. Refer to Figure 16, Figure 17, Figure 18 and Figure 19 for installation examples.
Steam Lines
Use rigid steam pipes made of copper (MED Type-L) or stainless steel (minimum DIN 1.4301) ex-
clusively, and use steam hoses for short distances only. Use original steam and condensate hoses from your local Nortec representative. Steam and condensate lines made of any other materials may adversely affect the operation of the unit, and will void the warranty. Refer to Table 6 on page 28 for details.
WARNING! Excessive backpressure can result in serious injury or damage to equipment!
Excessive backpressure in the steam line may affect the proper functioning of the humidier, and may also cause unexpected release of hot steam vapors. Bare skin exposed to the hot steam vapours can result in severe burns.
Prevention: Minimize the length of the steam line and the number of bends, as the backpressure can rise approximately 0.12 in H2O for every foot (100 Pa for every meter) of steam line, and every 90° elbow.
The length of the steam line should be kept as short as possible – refer to Table 6 on page 28 for
details. Avoid 90° bends, or use long radius elbows. Minimum bend radius is 12 in (300 mm) for steam hoses, and 5× the internal diameter for rigid steam pipes. Exceeding the maximum length can affect performance of the unit and may void the warranty. Backpressure in the line combined with duct static pressure must not exceed 5.5 in H2O (1.37 kPa) and 10 in H2O (2.49 kPa) with the optional ll cup extension.
Note: With oversized steam lines the maximum length can be extended. Use Nortec steam hose for short distances only. When calculating the total equivalent length, refer also to Table 7 on page 28 for equivalent length of common ttings.
IMPORTANT! When determining the length and routing of steam lines, allowances must be made for thermal expansion. If a steam hose is used, allowances must be made for shrinkage in the length of the hose due to aging.
Do not decrease the diameter of the steam line, as it increases the backpressure in the line and
also allows condensation of the steam. If that is unavoidable, install a Nortec steam line reducer at the connection to the steam distributor only, and install a condensate line just before the restriction. Contact your local Nortec representative for details of the reducer.
If necessary, increase the diameter of the steam line on the downslope and install a condensate
trap at the lowest point.
Do not combine steam lines except at the steam distributor. Use a Nortec adaptor specically de-
signed for that purpose, and only if the humidier steam cylinders operate in parallel.
If using blower packs with large Nortec EL humidiers, do not connect the output from both steam
cylinder to a single blower pack. Each blower pack has a maximum capacity of 100 lb/h (45 kg/h).
The steam line from the humidier must lead straight upwards for a minimum of 12 in (300 mm)
before continuing on to the steam distribution system.
The steam line must have a constant minimum upslope of 2 in/12 in (10°), or a constant minimum
downslope of 1/2 in/12 in (2°), as shown in Figure 14 on page 27.
Use short lengths of steam hose to connect the steam line to the humidier or steam distributor.
Secure the steam hoses with clamps.
Page 31
27Installation
Nortec EL
2582302_C_EN_1611
CAUTION!
Do not over-tighten the hose clamp on the steam hose. Maximum torque for 7/8 in (22 mm) clamps is 12 in·lbs (135 N·cm), and 16 in·lbs (180 N·cm) for 1-3/4 in (45 mm) clamps.
Figure 14:
10
o
2
o
12 in (300 mm)
2 in (50 mm)
12 in (300 mm)
½ in (12 mm)
Minimum Upslope Minimum Downslope
Steam Line Slope
To minimize formation of condensation and maximize efciency, the steam lines made of rigid pipes
(copper or stainless steel) must be insulated with a minimum of 1 in (25 mm) of pipe insulation over its entire length.
The weight of the steam line must be supported so there is no load on the humidier.
WARNING! Risk of severe burns from exposure to hot steam vapours!
Restrictions in the cross-section of the steam line will cause excessive backpressure in the steam cylinder when the unit is operating, which may cause unexpected release of hot steam vapors. Bare skin exposed to the hot steam vapours can result in severe burns.
Prevention: Observe the following:
Upon completion of the installation, purge the steam line to remove any contaminants and installation materials.
If using a steam hose make sure there are no kinks in the hose. A heated hose is more likely to kink.
To prevent condensate pockets, the steam line must not sag. If necessary, support the steam line with pipe clamps, trough, or wall brackets, and install a condensate drain at the lowest point in the steam line.
Do not install a shutoff valve (e.g. a manually operated shutoff valve, solenoid valve, etc.) in the steam line.
Page 32
28 Installation
2582302_C_EN_1611 Nortec EL
Table 6: Steam Line Recommendations
Model
Steam Line Over-sizedSteamLine**
Steam
Losses***
Maximum
Equivalent
Length
MED-L
Copper
Pipe
Diameter
Stainless Steel
(min. DIN 1.4301)
Pipe Diameter
Maximum
Equivalent
Length
MED-L
Copper
Pipe
Diameter
Stainless Steel
(min DIN 1.4301)
Pipe Diameter
EL005 7 ft
(2 m)
3/4 in
(20 mm)
7/8 in
× 0.049 wall
(22 mm
× 1.25 mm wall)
14 ft
(4 m)
1 in
(25 mm)
1-1/8 in
× 0.049 wall
(29 mm
× 1.25 mm wall)
0.06 lb/h/ft
(0.09 kg/h/m)
EL010 12 ft
(3.5 m)
24 ft
(7 m)
EL020 17 ft
(5 m)
34 ft
(10 m)
EL030 22 ft
(6.5 m)
44 ft
(13 m)
EL050 43 ft
(13 m)
1-1/2 in
(40 mm)
1-3/4 in
× 0.065 wall
(45 mm
× 1.65 mm
wall)
86 ft
(26 m)
2 in
(50 mm)
2 in
× 0.065 wall
(50 mm
× 1.65 mm
wall)
0.11 lb/h/ft
(0.18 kg/h/m)
EL075 EL100
47 ft
(14 m)
94 ft
(28 m)
EL150* EL200*
50 ft
(15 m)
1-1/2 in
(40 mm)
1-3/4 in
× 0.065 wall
(45 mm
× 1.65 mm wall)
100 ft
(30 m)
2 in
(50 mm)
2 in
× 0.065 wall
(50 mm
× 1.65 mm
wall)
Nortec Steam Hose
EL005-
EL030
10 ft
(3 m)
P/N 1328810 – 7/8 in (22 mm) 0.1 lb/h/ft
(0.15 kg/h/m)
EL050-
EL200
10 ft
(3 m)
P/N 1328820 – 1-3/4 in (45 mm) 0.15 lb/h/ft
(0.22 kg/h/m)
Notes:
* Use a single steam line for each steam cylinder. Do not combine lines except at a distributor, and only if using the humidiers in parallel. ** The over-sized lines may require a reducer at the humidier and the steam distributor.
*** Based on 1 in (25 mm) insulated copper pipe.
Table 7: Approximate Equivalent Length of Atmospheric Steam Line Fittings
Nominal
Tube Size
in (mm)
Standard90°
Elbow
ft (m)
45°Elbow
ft (m)
Side-outlet
Tee
ft (m)
0.75-0.875 (19-22)
2 (0.6) 1 (0.3) 4 (1.2)
1.5-1.75 (38-45)
3.5 (1.1) 1.75 (0.5) 7 (2.1)
3 (76) 5 (1.5) 2.5 (0.8) 11 (3.4)
4 (102) 8 (2.4) 4 (1.2) 15 (4.6)
Page 33
29Installation
Nortec EL
2582302_C_EN_1611
Condensate Lines
The condensate drain line from the steam distributor must have a constant minimum downslope of
1 in/48 in (1.2°), with a minimum trap height of 8 in (200 mm), and may be connected to the ll cup port on the top of the humidier, or to the building oor drain with condensate cooler as required. The condensate trap must be at least 12 in (300 mm) below the condensate port on the steam distribu­tion system or the "T" connector in the steam line. Refer to Figure 15.
Figure 15:
10
o
2
o
12 in (300 mm)
2 in (50 mm)
12 in (300 mm)
½ in (12 mm)
Minimum Upslope Minimum Downslope
Condensate Drain Lines
WARNING!
Riskofsevereburnsfromhotuidsorsteam!
The condensate lines may be lled with hot uids or steam. Bare skin in contact with hot uids or steam can result in severe burns.
Prevention: Never plumb the condensate lines to empty into a sink used by personnel. Always connect the lines to a drain according to applicable national and local plumbing codes.
Condensate lines must also be installed at all low points and at vertical transitions in the steam
line. The condensate drain lines should always connect to full-size "T" connectors in the steam line. Install full-size "T" connectors for condensate drain lines at all transitions from vertical to horizontal.
For a steam line that is longer than 15 ft (4.5 m) up to the maximum recommended length, install
condensate lines and traps at regular intervals. The maximum distance between the condensate traps for long runs is 15 ft (4.5 m).
Use 3/8 in (9.5 mm) Nortec condensate hose, or 3/8 in (9.5 mm) stainless steel pipe or 1/4 in (6.5 mm)
copper pipe for traps in the condensate lines.
Make sure that the condensate lines allow proper ow.
Do not over-tighten the hose clamps on the condensate lines.
IMPORTANT! Before starting up the unit, prime the traps in the condensate lines with water.
Page 34
30 Installation
2582302_C_EN_1611 Nortec EL
Figure 16:
A
B
C
D
Installation Example – Steam Distributor 20 in (500 mm) Above Humidier
A Steam line must run minimum 12 in (300 mm) vertically before continuing on to the steam distributor. B All condensate traps must be minimum 12 in (300 mm) below the condensate outlet on the steam distributor, and condensate lines
must have a constant minimum downslope of 1 in/48 in (1.2°).
C The steam line must not exceed the length specied in Table 6 on page 28. The minimum bend radius is 12 in (300 mm) for a steam
hose, or 5× the internal diameter for rigid steam pipes.
D All condensate traps must have a minimum height of 8 in (200 mm).
Page 35
31Installation
Nortec EL
2582302_C_EN_1611
Figure 17:
B
D
D
C
F
A
A
B
B
C
D
C
E
Installation Example – Steam Distributor Less Than 20 in (500 mm) Above Humidier
A Steam line must run minimum 12 in (300 mm) vertically before continuing on to the steam distributor. B All condensate traps must be minimum 12 in (300 mm) below the condensate outlet on the steam distributor or the steam line.
C The steam line must not exceed the length specied in Table 6 on page 28. The minimum bend radius is 12 in (300 mm) for a steam
hose, or 5× the internal diameter for rigid steam pipes. D All condensate traps must have a minimum height of 8 in (200 mm). E Obstacle F Condensate line must connect into a full-size "T" connector installed at the lowest point in the steam line.
Page 36
32 Installation
2582302_C_EN_1611 Nortec EL
Figure 18:
B
D
C
A
E
Installation Example – Rigid Steam Pipe With Insulation
A Steam line must run minimum 12 in (300 mm) vertically before continuing on to the steam distributor. B All condensate traps must be minimum 12 in (300 mm) below the condensate outlet on the steam distributor, and condensate lines
must have a constant minimum downslope of 1 in/48 in (1.2°).
C The steam line must not exceed the length specied in Table 6 on page 28. The minimum bend radius is 12 in (300 mm) for a steam
hose, or 5× the internal diameter for rigid steam pipes.
D All condensate traps must have a minimum height of 8 in (200 mm).
E Steam line must have a minimum of 1 in (25 mm) of pipe insulation over its entire length.
Page 37
33Installation
Nortec EL
2582302_C_EN_1611
Figure 19:
A
A
B
C
E
D
Installation Example – Remote-Mounted Blower Pack
A Steam line must run minimum 12 in (300 mm) vertically before continuing on to the blower pack. B All condensate traps must be minimum 12 in (300 mm) below the condensate outlet on the blower pack.
C The steam line must not exceed the length specied in Table 6 on page 28. The minimum bend radius is 12 in (300 mm) for a steam
hose, or 5× the internal diameter for rigid steam pipes. D All condensate traps must have a minimum height of 8 in (200 mm). E Steam line must have upslope (minimum 10°) /downslope (minimum 2°), and condensate line must constant minimum downslope of
1 in/48 in (1.2°).
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34 Installation
2582302_C_EN_1611 Nortec EL
5.5.3.1 Common Steam and Condensate Line Installation Mistakes
Some common steam and condensate line installation mistakes are shown in Figure 20.
Figure 20:
7
1
2, 3
4
5
4, 6
7
2, 3
2
Common Steam and Condensate Line Installation Mistakes
1 The condensate trap is located less than the required minimum 12 in (300 mm) below the steam distributor. 2 The minimum bend radius of 12 in (300 mm) for the steam hose (or 5× the internal diameter for rigid pipes) is not maintained. 3 No condensate trap is installed at the vertical transition. 4 The minimum slope for steam and condensate lines is not maintained. 5 The steam line does not run straight up for the required minimum 12 in (300 mm) before continuing on to the steam distributor. 6 On long steam line runs, condensate traps are required every 15 ft (4.5 m), and must connect into full-size "T" connectors in the steam
line. A condensate trap must also be installed a minimum of 12 in (300 mm) below the steam line.
7 Steam lines must not merge or reduce in diameter except at the steam distributor (only through a Nortec adaptor), and must have a
condensate line just before the restriction.
Page 39
35Installation
Nortec EL
2582302_C_EN_1611
5.5.4 Steam Connections Checklist
Check the following to ensure that the steam connections for the humidier have been installed correctly:
Steam Line
Observed all best practices?
Steam line exceed maximum length specied in Table 6 on page 28?
Minimum bend radius of 12 in (300 mm) for steam hose, or 5× internal diameter for rigid pipes
maintained?
Steam line sized correctly?
Backpressure in the line combined with duct static pressure exceed 5.5 in H2O (1.37 kPa), or
10 in H2O (2.49 kPa) with the optional Fill Cup Extension?
Steam lines run straight up from the humidier steam outlet for at least 12 in (300 mm) before bend?
Steam line have a constant minimum upslope of 2 in/12 in (10°), or a constant minimum downslope
of 1/2 in/12 in (2°)?
 Steam lines do not reduce in diameter except, if required, at the steam distributor, and condensate
line installed just before the restriction?
Steam lines do not merge except at the steam distributor through a Nortec adaptor?
Steam line does not sag or kink? Supported adequately? Any low points in line without condensate
trap?
 If a steam hose is used, is it attached securely with clamps? Clamps secure without crushing steam
line?
 Allowances for thermal expansion during operation, and shortening of the hose due to aging taken
into consideration?
Condensate Line
Local codes on drain water temperature requirements have been satised?
Condensate line from the steam distributor condensate port connected to the humidier ll cup port,
or the drain?
Condensate lines installed at all low points, and at vertical transitions in the steam line?
Condensate lines in the steam line always connect to full-size "T" connectors?
Condensate traps have a minimum loop height of 8 in (200 mm) and installed at least 12 in (300 mm)
below the "T" connector or steam distributor?
All condensate lines have a constant minimum downslope of 1 in/48 in (1.2°)?
Maximum distance between the condensate traps on long runs is 15 ft (4.5 m)?
Condensate traps primed with water?
Page 40
36 Installation
2582302_C_EN_1611 Nortec EL
5.6 Water Connections
Refer to "Site Requirements" on page 15 for the water supply and drain requirements.
Read "Water Connection Requirements" on page 38, and perform the water connections as shown in Figure 21
on page 36 and Figure 22 on page 37.
5.6.1 Water Connections Overview
Figure 21:
8
10
11
5
7
6
4
2
1
3
5
4
9
Water Supply and Drain Connections, Small and Medium Units
1 Drain canal (outlet un-threaded), 1-3/16 in (30 mm) O.D. 2 Hose clamp (supplied) 3 Flexible bent hose (supplied) 4 Drain line, minimum 7/8 in (22 mm) I.D. (not supplied) 5 Water supply line, minimum 1/2 in (13 mm) (not supplied) 6 Adaptor, 3/4 BSPP to 1/2 in NPT (supplied) 7 Fill valve (3/4 in BSPP plastic threads) 8 Air gap and optional trap (not supplied) 9 Shutoff valve (not supplied) 10 Filter, 5 μm (optional, but recommended) 11 Union tting (not supplied)
Page 41
37Installation
Nortec EL
2582302_C_EN_1611
Figure 22:
1
8
5
9
10
11
5
7
6
4
2
1
3
4
Water Supply and Drain Connections, Large Units
1 Drain canal (outlet un-threaded), 1-3/16 in (30 mm) O.D. 2 Hose clamp (supplied) 3 Flexible bent hose (supplied) 4 Drain line, minimum 7/8 in (22 mm) I.D. (not supplied) 5 Water supply line, minimum 1/2 in (13 mm) (not supplied) 6 Adaptor, 3/4 BSPP to 1/2 in NPT (supplied) 7 Fill valve (3/4 in BSPP plastic threads) 8 Air gap and optional trap (not supplied) 9 Shutoff valve (not supplied) 10 Filter, 5 μm (optional, but recommended) 11 Union tting (not supplied)
Page 42
38 Installation
2582302_C_EN_1611 Nortec EL
5.6.2 Water Connection Requirements
Water and drain connections must meet the following requirements:
All water supply and drain connections are to be installed to local plumbing codes.
For ease of maintenance, a water shutoff valve and union tting must be installed in the supply line
before the humidier.
The water supply piping should have a minimum diameter of 1/2 in (13 mm), with a 1/2 in NPT female
end. The piping material should be made of copper, stainless steel or plastic certied for drinking water systems.
CAUTION! Risk of damage to the plastic threads!
Thethreadsonthellvalvearemadeofplastic.
Prevention: Hand-tighten the NPT adaptor to the ll valve.
The (optional but recommended) water lter must be installed as close as possible to the humidier.
The air gap funnel should have a minimum diameter of 2-1/2 in (64 mm).
The air gap and optional trap should be located away from the control cabinet to keep any rising
steam from damaging the electrical components in the cabinet.
The drain piping should have a minimum internal diameter of 7/8 in (22 mm).
The exible bent hose exiting the humidier should be connected to a drain line with a minimum
internal diameter of 7/8 in (22 mm) and secured with clamps.
The drain line should be as short as possible, and have a constant minimum downslope of 1 in/48 in
(1.2°) to the funnel without touching its sides or bottom. Use stainless steel or copper pipe to handle temperatures up to 212°F (100°C).
Drain lines from large humidiers with dual steam cylinders must empty into separate open air gap
funnels before connecting to the drain. Combined drain line minimum 1.5 in (38 mm) ID.
Upon completion of installation, ush the water supply and drain lines to clear out any debris in the
lines. Check the strainer in the ll valve to ensure it is clear of all debris.
5.6.3 Water Connections Checklist
Check the following to ensure that the water connections for the humidier have been installed correctly:
Shutoff valve and union tting installed in supply line?
Water supply piping minimum 1/2 in (13 mm) diameter, and made of copper, stainless steel or plastic
certied for drinking water systems?
Optional 5 μm water lter installed in the supply line close to the humidier?
Water supply temperature 34-104°F (1-40°C)?
Water supply surge-free and pressure regulated to 30-80 psig (207-550 kPa)?
Leak-free water supply line?
Air gap funnel has a minimum diameter of 2-1/2 in (64 mm)?
Air gap funnel and any other drain located away from the control cabinet in the humidier?
Drain lines have a minimum internal diameter of 7/8 in (22 mm)?
Drain line have a constant minimum downslope of 1 in/48 in (1.2°) to funnel without touching its
sides or bottom?
 Drain lines from large humidiers with dual steam cylinders empty into separate open air gap funnels
before connecting to the drain? Combined drain line minimum 1.5 in (38 mm) ID?
 All debris ushed from supply and drain lines?
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39Installation
Nortec EL
2582302_C_EN_1611
5.7 Humidity Control Systems
5.7.1 Control Device Locations
The following schematic describes a potential system setup with respect to control devices. Refer to
Figure 23.
Figure 23:
φ
φ
max
φ
Δp
1
1
2
3
System Setup Schematic
1 On/Off humidistat, modulating humidistat, or humidity sensor 2 On/Off high limit humidistat, modulating humidistat, or humidity sensor 3 Air proving switch
Notes:
Humidity sensors and humidistats (1) can be modulating or On/Off. Preferred location is in the return
duct, as the supply air is well mixed with the room air at this location. Avoid placing near discharge
diffuser, near doorways, in sunlight, or in airow “dead-zones”.
Locate the high limit humidistat or humidity sensor (2) downstream of the humidier’s distributor so that
it can sense a duct that is over-humidied. Recommended setting is 85% RH. Locate it downstream
of the distributor – at least 5x the absorption distance away. If the absorption distance is not known,
locate it at least 10 feet (3 m) downstream from the distributor. Can be a humidistat (modulating or
On/Off), or a humidity sensor.
Locate the air proving switch (3) in the same duct as the humidier’s distributor so that it can sense
air ow (or lack thereof).
5.7.2 Permissible Control Signal Inputs
Table 8 shows the different permissible control signal inputs the Nortec EL steam humidier can handle.
Table 8: Permissible Control Signal Inputs
Humidity Control with External Con-
troller Control Signals
Humidity Control with Internal PI
Controller Humidity Sensor Signals
DigitalInputs(viaModbus,
BACnet IP/MSTP slave)
0-5 VDC (potentiometer 135-10kΩ)
1-5 VDC 0-10 VDC 2-10 VDC 0-20 VDC 0-16 VDC
3.2-16 VDC
0-20 mA
4-20 mA
0-5 VDC (potentiometer 135-10kΩ)
1-5 VDC 0-10 VDC 2-10 VDC 0-20 VDC 0-16 VDC
3.2-16 VDC
0-20 mA
4-20 mA
Standard
BACnet IP, BACnet MSTP (slave),
Modbus
Optional
BACnet IP (BTL), BACnet MSTP (Mas-
ter, BTL), Lonworks
Humidistat (24 V On/Off)
Page 44
40 Installation
2582302_C_EN_1611 Nortec EL
5.8 Electrical Connections
Refer to the specication label in Figure 3 on page 9 for the electrical requirements.
Install the electrical connections according to the wiring diagram(s) (Figure 24 on page 41, and Figure 25
on page 43, as applicable) and the instructions for "External Connections" on page 44.
For connecting multiple Nortec EL humidiers, refer to "Connecting Multiple Units Using Linkup" on page 54.
5.8.1 General
Safety
The electrical installation work requires removal of the door panels in the humidier. Observe the following safety precautions:
DANGER! Risk of electric shock!
The Nortechumidierismainspowered.Livepartsmaybeexposedwhenthedoorpan- els are open. Touching live parts may cause severe injury or even death.
Prevention: The Nortec humidier must be connected to the mains only after all installation
work has been completed, checked for correct workmanship, and the door panels are closed and fastened securely.
CAUTION! Electrostatic discharge (ESD)!
Theelectroniccomponentsinsidethehumidieraresensitivetoelectrostaticdischarge
(ESD).
Prevention: Take appropriate measures to protect the electronic components inside the unit against damage caused by electrostatic discharge (ESD). Refer to ANSI/ESD-S20.20.
All electrical installation work must be performed only by a licensed electrician authorized by the customer. It is the customer’s responsibility to verify qualications of the personnel.
The electrical installation must be performed according to the wiring diagrams in this manual, the instructions in this section, as well as applicable national and local codes.
All cables must lead into the unit, via appropriate cable glands or grommets, and be properly supported.
Make sure the cables are secured, and do not rub on any components or become a tripping hazard.
Observe national and local codes for maximum cable length and required wire sizes for cables.
Page 45
41Installation
Nortec EL
2582302_C_EN_1611
5.8.2 Wiring Diagrams
5.8.2.1 NortecELSteamHumidier,SteamCylinderA
Figure 24:
PEPESC2SC1NL1
INLET
SPARE/DRAIN
CONTACT.
CONT. SIGN.
GNDINV+
24V
10V
CONT.
DRAIN INLET
L1FU
L1SW
N
LEVEL SENS.
MAIN SUPPLY
MODULE B
PEP1NP
LIM. SIGN.
GNDIN
F3 4AT
SPARE
SWITCH
L1SC NSWL1SC NSWL1SW NSWL1SW
F1 1AT
COMM
HB OK
JP3
JP1
LEVEL
LOW 24V GND
CURRENT SENSOR
SC OK
HWS
BLOWER
IN24V
ON/OFF
IN24V
SPARE1 SPARE2
T1
On/Off
Switch
1
2
3
4
Drain
Fill
D+GND D-
GND24V
D+GND D-
RS4852RS4851PWR IC
PRI
N.O. Blower Pack Air Proving switch
24 VAC
Sec. Loop
GND
CH 1
CH 2
10 VDC
GND
1
2
3
4
5
6
7
9
8
J16
J15
JP11
JP8
JP4
JP7
DISPLAY
ACC
RFB
TD RD GND
5V
3.3V
COMM PORT
USB
DISPLAY
J22 LED
ETHERNET
SIM Card Main unit
CR2032
BAT
+
GND
-
J10
J12
+
GND
-+ GND
-
J14
GND
24V
SW1
s
s
s
s
s
s
s
s
s
s
s
Primary
Fuse
Option
Main Contactors
K1
Main
Contactor
K1
Steam Cylinder
Steam Cylinder
Steam Cylinder
Broken lines 3-phase
6-wire unit
L1
T1
T2
T3
L2
L3
L1
T1
T2
L2
Cylinder with Dual Contactor
Cylinder with Single Contactor
R
R
R
R
Y
Y
YY
B
B
B
R
B
B
B
B
B
B
B
Y
Y
Y
Y
R
R
R
R
R
To Level Sensor
QC2
To Level Sensor
QC2
To Level Sensor
QC1
To Current Sensor
To Current Sensor
1
1
1
1
1
1
1
1
1
1
11
1
ModuleA(Three Phase)
Single Contactor
ModuleA(Three Phase)
Dual Contactor
Module A(Single Phase)
X0
X0
X0
L1L2
L1L2
L3
L1L2
L3
R
R
R
Y
B
BL
BL
BL
R
R
DriverA
Driver B
QC1
QC2
To transformer (primary side)
To transformer (primary side)
Transformer
X13
X14
X15
X8
X9
X12
X11
X7
X1
X2
X4
X5
X6
To Connector
X4
To Connector
X4
DRIVER
BOARD A
CONTROL BOARD
CYLINDER-A
B
To Level Sensor
QC1
L1
T1
T2
T3
L2
L3
L1
T1
T2
T3
L2
L3
Main
Contactor
K1
SEC
24 VAC
R
R
R
R
R
B
B
Y
R
Y
Y
B
B
R
B
R
YG GY
BGY
BR
GY
Y
G
R
B
J19
J21
J17
J18
J23
J6
J2J3
432121
Analog Out
F1
100mA
Sensor Supply
Max. 60mA
Unit ON
Steam Service
Error
Remote BoardFault (option)
1 2
3 4 5 6 7 8
9
10
432121
Analog Out
F1
100mA
Sensor Supply
Max. 60mA
FanA
Fan B
Flush B
FlushA
Accessory Board (option)
1 2
3 4 5 6 7 8
9
10
To Module B (double unit only)
A
To Terminal X1 in Module B (double unit only)
B
C
To Terminal X14 in Driver Board B (double unit only)
Wire Colors: R Red YYellow B Black BL Blue BR Brown GY Grey G Green O Orange
To Module B (double unit only)
A
NL
Blower Pack Power Supply (for Space and RMBP units)208-600 V
110-120 VAC
+
1A
slow blow
R
R
G
RR
O
s
s
O
O
O
BP Loop
Wiring Diagram - Nortec EL Humidier, Steam Cylinder A (Module A)
Page 46
42 Installation
2582302_C_EN_1611 Nortec EL
Legend: F1 Internal fuse, driver board (1A, slow-acting) F3 Internal fuse, driver board (4A, slow-acting) JP4 Jumper for activating the termination resistor for Modbus or BACnet MSTP network. J6 Modbus connector (RS485 interface) JP7 Jumper for activating Modbus or BACnet MSTP communication via connector J6. JP8 Termination, Linkup system J10 Linkup connector K1 Main contactor, supply voltage LV Low voltage terminal strip A
SW1 Rotary switch, module identication (Module A: 0)
X0 Terminal block, supply voltage
Page 47
43Installation
Nortec EL
2582302_C_EN_1611
5.8.2.2 NortecELSteamHumidier,SteamCylinderB(LargeUnitsOnly)
Figure 25 shows the wiring diagram for large humidiers with a second steam cylinder (usually referred
to as Cylinder B).
Figure 25:
PEPESC2SC1NL1
INLET
SPARE/DRAIN
CONTACT.
CONT. SIGN.
GNDINV+
24V
10V
CONT.
DRAIN INLET
L1FU
L1SW
N
LEVEL SENS.
MAIN SUPPLY
MODULE B
PEP1NP
LIM. SIGN.
GNDIN
F3 4AT
SPARE
SWITCH
L1SC NSWL1SC NSWL1SW NSWL1SW
F1 1AT
COMM
HB OK
JP3
JP1
LEVEL
LOW 24V GND
CURRENT SENSOR
SC OK
HWS
BLOWER
IN24V
ON/OFF
IN24V
SPARE1 SPARE2
T1
Drain
Fill
D+GND D-
GND24V
D+GND D-
RS4852RS4851PWR IC
1
2
3
4
5
6
7
9
8
SW1
s
s
s
s
s
s
s
s
s
Primary
Fuse
Option
Main Contactors
K1
Main
Contactor
K1
Steam Cylinder
Steam Cylinder
Broken lines 3-phase
6-wire unit
L1
T1
T2
T3
L2
L3
Cylinder with Three Phase Dual Contactor
Cylinder with Three Phase Single Contactor
R
R
R
R
Y
Y
YY
B
B
B
B
B
B
B
B
Y
Y
Y
Y
R
R
R
R
To Level Sensor
QC2
To Level Sensor
QC1
To Current Sensor
1
1
1
1
1
1
1
1
1
1
11
1
R
R
Y
B
BL
R
R
QC1
QC2
X13
X14
X15
X8
X9
X12
X11
X7
X1
X2
X4
X5
X6
To Connector
X4
DRIVER
BOARD B
CYLINDER-B
B
L1
T1
T2
T3
L2
L3
L1
T1
T2
T3
L2
L3
R
R
R
R
R
B
B
Y
R
Y
Y
B
B
R
YG GY
A
Connects to Terminal X1 in Driver Board A
B
C
Connects to Terminal X15 in Driver Board A
Wire Colors: R Red YYellow B Black BL Blue BR Brown GY Grey G Green O Orange
A
Connects to Module A(Terminal Block X0)
Connects to Module A(Terminal Block X0)
BL
GND
GND
24Vac
N.O. Blower Pack Air Proving switch
RR
Blower Pack Power Supply (for Space and RMBP units)208-600 V
110-120 VAC
2A
slow blow
R
R
G
O
s
s
O
O
O
NL NL
RRR
24 VAC
Sec. Loop
GND
CH 1
CH 2
10 VDC
GND
+
BP Loop
Wiring Diagram - Nortec EL Humidier, Steam Cylinder B (Module B)
F1 Internal fuse, driver board (1A, slow-acting) F3 Internal fuse, driver board (4A, slow-acting) K1 Main contactor, supply voltage LV Low voltage terminal strip B
SW1 Rotary switch, module identication (Module B: 1)
Page 48
44 Installation
2582302_C_EN_1611 Nortec EL
5.8.3 External Connections
The different external connections to the Nortec EL steam humidier are discussed below.
5.8.3.1 3-PhasePowerSupplyConnection
Figure 26 shows the 3-phase power supply connections for the Nortec EL steam humidier.
IMPORTANT! The optional internal fuse is not a substitute for an external fuse. A dedicated external fused disconnect switch must be installed, and the fuse rating must not exceed the maximum circuit protection indicated on the specication label – refer to Figure 3 on page 9.
All wiring must be in accordance with national and local electrical codes.
Figure 26:
External
X0
s
s
s
L1L2L3
2
3
1
3-Phase Power Supply Connections
1 External fused disconnect switch 2 Terminal block, power supply (X0) 3 Optional internal primary fuse
Page 49
45Installation
Nortec EL
2582302_C_EN_1611
5.8.3.2 Single-PhasePowerSupplyConnection
Figure 27 shows the single-phase power supply connections for the Nortec EL steam humidier.
IMPORTANT! The optional internal fuse is not a substitute for an external fuse. A dedicated external fused disconnect switch must be installed, and the fuse rating must not exceed the maximum circuit protection indicated on the specication label – refer to Figure 3 on page 9.
All wiring must be in accordance with national and local electrical codes.
Figure 27:
External
X0
s
s
s
L1L2L3
2
3
1
Single-Phase Power Supply Connections
1 External fused disconnect switch 2 Terminal block, power supply (X0) 3 Optional internal primary fuse
Page 50
46 Installation
2582302_C_EN_1611 Nortec EL
5.8.3.3 External Safety Chain
The external safety chain consists of potential-free contacts of the external monitoring devices (for ex­ample, high limit humidistat, air proving switch, etc.) which are connected in series to terminal points "1" and "2" on the low voltage terminal strip. Refer to Figure 24 on page 41 and Figure 28.
If the blower pack is installed, then connect it to terminal points "8" and "9" on the low voltage terminal strip. Make sure that no other wires are connected to these terminal points. If using multiple blower packs, make sure that they are connected in series.
Note: Interrupting the external safety chain disconnects power from the contactor and ll valve, and is intended as a safety precaution. To control the humidier with an on/off humidistat refer to "External On/
Off Input" on page 49 for details.
IMPORTANT! Install a jumper between terminal points "8" and "9" on the low voltage terminal strip if the blower pack is not used.
IMPORTANT! A high limit humidistat is highly recommended to prevent over-humidication and potential damage to property.
IMPORTANT! Install a jumper between terminal points "1" and "2" on the low voltage terminal strip if no external On/Off devices are connected to the safety chain – not recommended.
The connecting cables must lead into the control cabinet through a cable gland or grommet.
CAUTION! Risk of damage to internal components!
Prevention: DO NOT apply voltage to low voltage terminal strip terminal points "1" and "2" through the contacts of the external On/Off devices.
Figure 28:
+
max
φ
Δp
External
5
4
3
2
1
LV
8
7 6
5 4 3 2
9
1
External Safety Chain Connections
1 Blower pack 2 High limit humidistat – highly recommended 3 Air proving switch 4 Jumper (installed if no devices connected to safety chain – not recommended) 5 Jumper (installed if the blower pack is not used)
Page 51
47Installation
Nortec EL
2582302_C_EN_1611
5.8.3.4 Modulating Demand or Humidity Signal
Connect an external humidity sensor input or direct demand modulating input to terminal points "3" and "4" in the low voltage terminal strip. Refer to Figure 24 on page 41 and Figure 29. The permissible control signal input values are shown in Table 8 on page 39.
Do not connect multiple modulating signals to the same modulating input on the humidier. If necessary, a second modulating signal can be connected to terminal point "5" and "3", using terminal point "3" as common. Make sure that Control Channels is set to "Dual" in the control software to utilize the second modulating signal – refer to the Operation and Maintenance Manual.
Alternately, transducer signals or demand signals can be written to the humidier via a valid digital com­munication protocol. Set Source to "Modbus", "BACnet IP", "BACnet MSTP" or "Lonworks".
The signal cable must lead into the control cabinet through a cable gland or grommet. If a shielded signal cable is used, connect the shielding to terminal point "3".
CAUTION!
If the shielding of the signal is already connected to a potential or a grounded conductor, do not connect it to terminal point "3".
Figure 29:
External
1
LV
2
8
7 6
5 4 3 2
9
1
Modulating Demand or Humidity Signal Connection
1 Modulating demand or humidity sensor signal 2 Modulating demand or humidity sensor signal (additional)
Page 52
48 Installation
2582302_C_EN_1611 Nortec EL
5.8.3.5 Ohmic Humidity Controller (Passive)
If a passive 135-10kΩ ohmic humidity controller is used, connect the signal cable to the terminal points 3", "4" and "6" in the low voltage terminal strip. Refer to Figure 24 on page 41 and Figure 30. The permis­sible control signal input values are shown in Table 8 on page 39.
The signal cable must lead into the control cabinet through a cable gland or grommet.
IMPORTANT! When connecting an ohmic humidity controller, jumper JP1 on the driver board must be set to 10V (so that output of terminal point "6" is 10V), and Signal Type must be set to "0-10V" in the control software. Refer to the Operation and Maintenance Manual.
Figure 30:
External
1
JP1
10V24V
LV
8
7 6
5 4 3 2
9
1
Ohmic Humidity Controller Connection
1 Ohmic humidity controller, 135-10kΩ
Page 53
49Installation
Nortec EL
2582302_C_EN_1611
5.8.3.6 24V On/Off Humidistat
If a 24V On/Off humidistat is used, connect the signal cable to the terminal points "4" and "6" in the low voltage terminal strip. Refer to Figure 24 on page 41 and Figure 31.
The signal cable must lead into the control cabinet through a cable gland or grommet.
IMPORTANT! When connecting a 24V On/Off humidistat, jumper JP1 on the driver board must be set to 24V (so that terminal point "6" will output 24VDC), and Control Mode must be set to "On/Off" in the control software. Refer to the Operation and Maintenance Manual.
Figure 31:
External
1
JP1
10V24V
LV
8
7 6
5 4 3 2
9
1
24V On/Off Humidistat Connection
1 24V On/Off humidistat
5.8.3.7 External On/Off Input
The humidier can also be controlled by an external On/Off input through connector X11 on the driver board – refer to Figure 24 on page 41.
The signal cable must lead into the control cabinet through a cable gland or grommet
Enable Input must be set to "On" in the control software to use this input signal – refer to the Operation and Maintenance Manual.
Page 54
50 Installation
2582302_C_EN_1611 Nortec EL
5.8.3.8 Dual Steam Cylinders Control Wiring
The dual steam cylinders in the large model Nortec EL steam humidier can be congured to operate in series, in parallel, or independently – by setting Dual Cylinder Mode in the controls software. Refer to the Operation and Maintenance Manual.
In series or parallel mode, all the control signals are wired to low voltage terminal strip A. Connections are made to terminal strip A in the same way as for a single cylinder unit. In addition, a jumper wire must be installed between the terminal points "2" in the low voltage terminal strips A and B. Refer to Figure 32.
The independent mode is used to control humidity in two separate zones, each with its own separate set of control signals. Connections are made as shown for single cylinder units but with independent connections to each terminal strip. All the control signals from Zone A are connected to low voltage ter­minal strip A, and signals from Zone B are connected to low voltage terminal strip B. Refer to Figure 33.
Figure 32:
External
1
2
1
2
3
Inputs
LV LV
8
7
6
5
4
3
2
9
1
8
7
6
5
4
3
2
9
1
Dual Steam Cylinders Control Wiring, Series/Parallel Mode
1 Low voltage terminal strip A 2 Low voltage terminal strip B 3 Jumper wire (for parallel or series mode only)
Figure 33:
External
1
2
1
2
Inputs - Zone A Inputs- Zone B
LV LV
8
7
6
5
4
3
2
9
1
8
7
6
5
4
3
2
9
1
Dual Steam Cylinders Control Wiring, Independent Mode
1 Low voltage terminal strip A, Zone A 2 Low voltage terminal strip B, Zone B
Page 55
51Installation
Nortec EL
2582302_C_EN_1611
5.8.3.9 Remote Relay PCB Connections
The optional remote relay PCB (printed circuit board) on the Nortec EL steam humidier has the follow­ing four potential-free relay contacts for remote display of humidier status and fault conditions. Refer
to Figure 34 for the relevant terminal contacts.
Error – this relay can be wired to open (NC) or close (NO) when a fault is detected by the humidier
controls.
Service – this relay is activated when the set maintenance interval elapses. It can be wired to open (NC) or close (NO) when a service warning appears on the touchscreen panel of the humidier and the status LED turns yellow in color. Note: The way this relay handles system warnings (all warnings or service warnings only) can be congured in the control software – refer to the Remote Fault Board tab in the Operation and Maintenance Manual.
Steam – this normally open (NO) relay closes when the control board detects a current draw and production of steam.
Unit on – this normally open (NO) relay closes when the humidier has power, and the On/Off switch is in the On position.
Figure 34:
INTERNAL
EXTERNAL
432121
Analog Out
Sensor Supply
Max. 60mA
Unit ON
SteamServiceError
12345678910
F1
100mA
H1
J2 on Control Board
Remote Relay PCB Connections
The remote relay PCB connects to the connector J2 on the Nortec EL control board.
Page 56
52 Installation
2582302_C_EN_1611 Nortec EL
5.8.3.10 Accessory Relay PCB Connections
The optional accessory relay PCB on the Nortec EL steam humidier has the following four potential­free relay contacts that can be used to control other accessory devices. Refer to Figure 35 for the relevant terminal contacts.
Flush A – this normally open (NO) relay can be wired to activate or deactivate the optional valve for ushing the water supply line for steam cylinder A.
Flush B – this normally open (NO) relay can be wired to activate or deactivate the optional valve for ushing the water supply line for steam cylinder B.
Fan Activate B – this normally open (NO) relay can be wired to activate or deactivate an external fan of the AHU (air handling unit) connected to steam cylinder B.
Fan Activate A – this normally open (NO) relay can be wired to activate or deactivate an external fan of the AHU connected to steam cylinder A.
Figure 35:
INTERNAL
EXTERNAL
432121
Analog Out
Sensor Supply
Max. 60mA
FanA
Fan BFlush BFlush A
12345678910
F1
100mA
J3 on Control Board
Accessory Relay PCB Connections (Optional)
The accessory relay PCB connects to the connector J3 on the Nortec EL control board.
Page 57
53Installation
Nortec EL
2582302_C_EN_1611
5.8.3.11 Modbus Connection
The Nortec EL steam humidier comes standard with a Modbus communications interface, which can be used to remotely control its output or monitor its operation.
Refer to Figure 36 and connect the Modbus communication cable to the Nortec EL steam humidier as follows:
1. Connect a Modbus cable to the connector J6 on the Nortec EL control board. Refer to Table 9 for Modbus cable requirements, and Table 10 for communication parameters. Contact your Nortec 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). If the jumper is not installed, no communication will take place through J6.
2. Install the jumper JP4 on the control board if the Nortec EL steam humidier is the rst or last unit in the network. Termination is generally not required if the network is less than 3280 ft (1000 m) in length.
Figure 36:
COMM PORT
JP11
JP8
JP4
JP7
DISPLAY
DISPLAY
LED
BAT
+-+-+-
J17
J18
J22
J23
J21
J19
GND GND GND GND 24V
CR2032
GND 5V
3.3V
RDTD
SIM Card Main Unit
USB
Ethernet
J3 ACC J2 RFB
CONTROL BOARD
JP4
JP7
+-
GND
ACC RFB
J12 J14J10
J6
J2 J3
J6
Modbus Connection on Nortec EL steam humidier
JP4 Jumper for activating the termination resistor for Modbus or BACnet MSTP network J6 Modbus connector (RS485 interface)
JP7 Jumper for activating Modbus or BACnet MSTP communication via RS485 interface (J6)
Table 9: ModBus Cable Requirements
BMS Protocol Signal Type Recommended Cable
Maximum Distance from
NortechumidiertoBMS
Modbus EIA-485, 2-wire 18-24 AWG shielded, twisted
pair, 120Ω *
2200 ft (670 m)
* Connect humidiers in a daisy chain to the Modbus RTU. Ground shield at on end only – either at the BMS or the humidier.
Page 58
54 Installation
2582302_C_EN_1611 Nortec EL
Table 10: Modbus Communication Parameters
Parameter Default Software Adjustable Range
Signal type EIA-485
Transmission mode RTU
Baud rate 9600 110, 300, 600, 1200, 2400, 4800,
9600, 19200, 38400, 57600, 76800
or 115200
Data bits 8
Stop bits 1
Parity Even Odd, Even, None
Address 10 1-247
Time out 300 s 1-300 s
5.8.4 Connecting Multiple Units Using Linkup
The integrated controller in the Nortec EL steam humidier allows up to six integrated controllers (for a maximum of 12 steam cylinders) to be connected in a "main-extension" conguration using Nortec's Linkup system. All the humidiers within this setup must share the same location, and all linked units will be controlled by one set of control signals connected to the main unit.
Refer to Figure 37 and connect multiple unit using Linkup as follows:
1. Connect all control signals for the entire Linkup conguration to the low voltage terminal strip A in the main unit.
2. Install a jumper wire between the terminal points "1" and "2" in the low voltage terminal strip on all extension units.
3. Connect a multi-strand twisted pair shielded cable (18-24 AWG, 120 Z) between the J10 connectors on the control board of each Nortec EL steam humidier in the Linkup system.
IMPORTANT! Do not reverse polarity.
4. Install the termination jumper JP8 in the control board of the last extension unit in the Linkup system.
5. Finally, refer to the Operation and Maintenance Manual to set up the multi-unit conguration in the control software.
Page 59
55Installation
Nortec EL
2582302_C_EN_1611
Figure 37:
LV LV LV
8
7 6
5 4 3 2
9
1
8
7 6
5 4 3 2
9
1
8
7 6
5 4 3 2
9
1
All inputs
4
4
1
2
3
JP11
JP8
JP4
JP7
BAT
+-+-+-
GND GND GNDGND 24V
CR2032
SIM Card Main Unit
CONTROL BOARD
ACC RFB
J12 J14J10
J6
J2 J3
JP11
JP8
JP4
JP7
BAT
+-+-+-
GND GND GNDGND 24V
CR2032
SIM Card Main Unit
CONTROL BOARD
ACC RFB
J12 J14J10
J6
J2 J3
JP11
JP8
JP4
JP7
BAT
+-+-+-
GND GND GNDGND 24V
CR2032
SIM Card Main Unit
CONTROL BOARD
ACC RFB
J12 J14J10
J6
J2 J3
JP8
+-
GND
J10
5
Multi-Unit Linkup Connections
1 Main unit (all control signals to unit) 2 Extension unit #1 (no control signals to unit) 3 Extension unit #X (no control signals to unit) 4 Jumper (on all extension units) 5 Termination jumper, JP8 (only on last unit in Linkup chain)
5.8.5 Maximum External Fuse
Table 11: Maximum External Fusing, Nortec EL Duct Single-Phase
Model
110-120V/1~ 208V/1~ 220-240V/1~ 277V/1~ 380-425V/1~ 440-480V/1~ 550-600V/1~
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
EL Duct 005 1.9 15.6 20
EL Duct 010 3.7 18.0 25 3.7 15.6 20 3.7 13.5 20 3.7 9.0 15 3.7 7.8 15 3.7 6.2 15
EL Duct 020 7.5 36.0 45 7.5 31.2 40 7.5 27.0 35 7.5 18.0 25 7.5 15.6 20 7.5 12.5 20
EL Duct 030-200
Page 60
56 Installation
2582302_C_EN_1611 Nortec EL
Table 12: Maximum External Fusing, Nortec EL Duct 3-Phase
Model
208V/3~ 220-240V/3~ 380-415V/3~ 440-480V/3~ 550-600V/3~
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
EL Duct 005
EL Duct 010
EL Duct 020 7.5 20.8 25 7.5 18.0 25 7.5 10.4 15 7.5 9.0 15 7.5 7.2 15
EL Duct 030 11.2 31.1 40 11.2 27.0 35 11.2 15.6 20 11.2 13.5 20 11.2 10.8 15
EL Duct 050 18.7 51.9 70 18.7 45.0 60 18.7 26.0 35 18.7 22.5 30 18.7 18.0 25
EL Duct 075 28.1 77.9 100 28.1 67.5 90 28.1 39.0 50 28.1 33.7 45 28.1 27.0 35
EL Duct 100 33.7 93.4 125 37.4 90.0 125 37.4 52.0 70 37.4 45.0 60 37.4 36.0 45
EL Duct 150 56.1 155.7 200 56.1 135.0 175 56.1 78.0 100 56.1 67.5 90 56.7 54.0 70
EL Duct 200 67.3 186.9 250 74.8 180.0 225 74.8 104.1 150 74.8 90.0 125 74.8 72.0 90
Table 13: Maximum External Fusing, Nortec EL Space Single-Phase
Model*
110-120V/1~ 208V/1~ 220-240V/1~ 277V/1~ 380-415V/1~ 440-480V/1~ 550-600V/1~
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
EL Space 005 2.0 16.8 25
EL Space 010 3.9 18.7 25 3.9 16.2 25 3.9 14.0 20 3.9 9.4 15 3.9 8.1 15 3.9 6.5 15
EL Space 020 7.6 36.7 50 7.6 31.8 40 7.6 27.5 35 7.6 18.4 25 7.6 15.9 20 7.6 12.7 20
EL Space 030-200
* Space or RMBP (remote blower pack powered by the humidier) conguration
Page 61
57Installation
Nortec EL
2582302_C_EN_1611
Table 14: Maximum External Fusing, Nortec EL Space 3-Phase
Model*
208V/3~ 220-240V/3~ 380-415V/3~ 440-480V/3~ 550-600V/3~
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
Maximum Output (kW)
Maximum Current (A)
Maximum External Disconnect (A)
EL Space 005
EL Space 010
EL Space 020 7.7 21.5 30 7.7 18.6 25 7.7 10.8 15 7.7 9.3 15 7.7 7.4 15
EL Space 030 11.5 31.9 40 11.5 27.6 35 11.5 16.0 20 11.5 13.8 20 11.5 11.0 15
EL Space 050 19.0 52.6 70 19.0 45.6 60 19.0 26.4 35 19.0 22.8 30 19.0 18.2 25
EL Space 075 28.3 78.6 100 28.3 68.1 90 28.3 39.4 50 28.3 34.1 45 28.3 27.2 35
EL Space 100 33.9 94.2 125 37.7 90.6 125 37.7 52.4 70 37.7 45.3 60 37.7 36.2 50
* Space or RMBP (remote blower pack powered by the humidier) conguration
5.8.6 Electrical Connections Checklist
Check the following to ensure that the electrical connections for the humidier have been installed correctly:
 Power supply meet the voltage and current requirements shown on the specication label (Figure 3
on page 9)?
Power supply have an external dedicated fused disconnect?
All wiring done according to the wiring diagram and instructions in this manual?
All cables fastened securely?
All cables free of tension and pass through cable glands or grommets?
Electrical installation meet the applicable national and local codes?
All door panels closed and fastened securely?
Page 62
58 Installation
2582302_C_EN_1611 Nortec EL
This page intentionally left blank
Page 63
59Product Specications
Nortec EL
2582302_C_EN_1611
6 ProductSpecications
6.1 Weights
Table 15: Weights
Model Small Medium Large
EL Net weight 45 lb
(21 kg)
85 lb
(39 kg)
120 lb
(55 kg)
Operating weight 65 lb
(30 kg)
150 lb
(68 kg)
245 lb
(112 kg)
EL Space Net weight 83 lb
(38 kg)
123 lb
(56 kg)
Operating weight 103 lb
(47 kg)
188 lb
(85 kg)
Page 64
60 Product Specications
2582302_C_EN_1611 Nortec EL
6.2 Dimensions
Figure 38: Nortec EL Steam Humidier
(123.8)
6.83
(173.5)
2.82
(71.7)
0.87
(22.0) ø
8.54
(217)
3.25
(82.4)
1.75
(44.7)
14.33 (364)
0.28 (7)
16.54 (420)
26.4 (670.5)
2.25 (57)
2.12
(54)
3.16
(80.2)
12
(304.8)
1.37 (35)
2.28
(57.6)
12
(304.8)
2.28
(57.6)
1.22
(31) ø
8.32
(211.5)
2
(51)
1.73
(44)
3.81
(97)
19.69
(500)
7.62 (193.5)
2.12
(54)
4.88
G 3/4"
A
A
2x 0.31
(8.0) ø
0.59
(15)
Optional mounting
bar shown
, Small Housing
Dimensions are in inches, and values in brackets are in millimeters.
Page 65
61Product Specications
Nortec EL
2582302_C_EN_1611
Figure 39:
G 3/4"
A
A
2x 0.31
(8.0) ø
7.16
(181.8)
6.44
(163.5)
2.43
(61.8)
9.13
(232)
3.25
(82.4)
1.75
(44.7)
1.78
(45.0) ø
14.33 (364)
0.28 (7)
20.87 (530)
30.71
(780)
0.59
(15)
2.25 (57)
2.12
(54)
1.37 (35)
16.0
(406.5)
3.48
(88.5)
22.83
(580)
7.62 (193.5)
2.12
(54)
2.43
(61.8)
16.0
(406.5)
2.43
(61.8)
1.22
(31) ø
2
(51)
1.73
(44)
3.81
(97)
12.66
(321.5)
Optional mounting
bar shown
Nortec EL Steam Humidier, Medium Housing
Page 66
62 Product Specications
2582302_C_EN_1611 Nortec EL
Figure 40:
2x G 3/4"
AA
A
A
4x 0.31
(8.0) ø
2.43
(61.8)
6.44
(163.5)
16.5
(418.8)
20.5
(520.5)
9.13
(232)
3.25
(82.4)
1.75
(44.7)
7.04
(178.8)
21.09
(535.8)
0.28 (7)
30.71
(780)
16.0
(406)
39.37
(1000)
2.12
(54)
0.59
(15)
4.21
(107)
16.0
(406.5)
16.0
(406.5)
4.6
(117)
2.75 (70)
23.23
(590)
10.37
(263.5)
6.46
(164)
2x 1.78
(45.0) ø
2x 1.22
(31) ø
3.81
(97)
1.73
(44)
26.71
(678.5)
16.06 (408)
2
(51)
12.67
(321.5)
Optional mounting
bar shown
Nortec EL Steam Humidier, Large Housing
Page 67
63Product Specications
Nortec EL
2582302_C_EN_1611
Figure 41:
14.4 (365)
16.5 (418)
0.5 (12)
35.2 (893)
15.8 (400)
Drain connection
1.18 (30)
ø
13.0 (329)
9.0
(229)
Fill connection ½ NPT
1.6
(40)
Primary power
3.6
(91)
2.8
(72)
14.5
(369)
20.9
(530)
3.16 (80)
12
(304.8)
1.37 (35)
19.69
(500)
2.12
(54)
Nortec EL Space Steam Humidier, Small Housing
Page 68
64 Product Specications
2582302_C_EN_1611 Nortec EL
Figure 42:
16.3 (415)
Drain connection
1.18 (30)
ø
Fill connection ½ NPT
20.9
(530)
15.7
(400)
16.5
(418)
2.2
(56)
39.5
(1003)
0.5
(12)
14.9
(380)
1.3
(32)
Primary power
9.1
(232)
3.6
(91)
2.4
(62)
18.9
(479)
1.37 (35)
16.0
(406.5)
3.48 (89)
22.83
(580)
2.12
(54)
Nortec EL Space Steam Humidier, Medium Housing
Page 69
iAppendix-A
Nortec EL
2582302_C_EN_1611
A Appendix
A.1 Installation Checklist
The following is a consolidated installation checklist that can be used in the commissioning of the unit:
Mounting
Unit installed in the correct location (according to "Location and Clearances" on page 16)?
Adequate clearance for servicing unit?
Mounting surface stable, and capable of supporting the full operating weight of the humidier?
Unit level?
Unit secured properly?
Steam Line
Observed all best practices?
Steam line exceed maximum length specied in Table 6 on page 28?
Minimum bend radius of 12 in (300 mm) for steam hose, or 5× internal diameter for rigid pipes
maintained?
Steam line sized correctly?
Backpressure in the line combined with duct static pressure exceed 5.5 in H2O (1.37 kPa), or
10 in H2O (2.49 kPa) with the optional Fill Cup Extension?
Steam lines run straight up from the humidier steam outlet for at least 12 in (300 mm) before bend?
Steam line have a constant minimum upslope of 2 in/12 in (10°), or a constant minimum downslope
of 1/2 in/12 in (2°)?
 Steam lines do not reduce in diameter except, if required, at the steam distributor, and condensate
line installed just before the restriction?
Steam lines do not merge except at the steam distributor through a Nortec adaptor?
Steam line does not sag or kink? Supported adequately? Any low points in line without condensate
trap?
 If a steam hose is used, is it attached securely with clamps? Clamps secure without crushing steam
line?
 Allowances for thermal expansion during operation, and shortening of the hose due to aging taken
into consideration?
Condensate Line
Local codes on drain water temperature requirements have been satised?
Condensate line from the steam distributor condensate port connected to the humidier ll cup port,
or the drain?
Condensate lines installed at all low points, and at vertical transitions in the steam line?
Condensate lines in the steam line always connect to full-size "T" connectors?
Condensate traps have a minimum loop height of 8 in (200 mm) and installed at least 12 in (300 mm)
below the "T" connector or steam distributor?
All condensate lines have a constant minimum downslope of 1 in/48 in (1.2°)?
Maximum distance between the condensate traps on long runs is 15 ft (4.5 m)?
Condensate traps primed with water?
Page 70
ii Appendix-A
2582302_C_EN_1611 Nortec EL
Water Connections
Shutoff valve and union tting installed in supply line?
Water supply piping minimum 1/2 in (13 mm) diameter, and made of copper, stainless steel or plastic
certied for drinking water systems?
Optional 5 μm water lter installed in the supply line close to the humidier?
Water supply temperature 34-104°F (1-40°C)?
Water supply surge-free and pressure regulated to 30-80 psig (207-550 kPa)?
Leak-free water supply line?
Air gap funnel has a minimum diameter of 2-1/2 in (64 mm)?
Air gap and any other drain located away from the control cabinet in the humidier?
Drain lines have a minimum internal diameter of 7/8 in (22 mm)?
Drain line have a constant minimum downslope of 1 in/48 in (1.2°) to funnel without touching its
sides or bottom?
 Drain lines from large humidiers with dual steam cylinders empty into separate open air gap funnels
before connecting to the drain? Combined drain line minimum 1.5 in (38 mm) ID?
 All debris ushed from supply and drain lines?
Electrical Connections
Power supply meet the voltage and current requirements shown on the specication label (Figure 3
on page 9)?
Power supply have an external dedicated fused disconnect?
All wiring done according to the wiring diagram and instructions in this manual?
All cables fastened securely?
All cables free of tension and pass through cable glands or grommets?
Electrical installation meet the applicable national and local codes?
All door panels closed and fastened securely?
Page 71
iiiAppendix-B
Nortec EL
2582302_C_EN_1611
B Appendix
B.1 Commissioning Checklist
The Nortec EL humidier must always be commissioned for the rst time by a service technician from your local Nortec representative, by a Nortec employee, or by personnel who are well trained and authorized by the cus­tomer. It is the customer's responsibility to verify the qualications of personnel.
The intent of the commissioning checklist is to verify that the humidication system has been installed according to the installation manual.
Commissioning of the Nortec EL humidier consists of two steps – an inspection of the site services and the installation prior to start-up, and performance tests of the unit. Complete the "Pre-Start-Up Checklist" below and
"Performance Checklist" on page vi. Enter all notes and exceptions in the space provided on page vii. Retain this
copy in the installation manual, and submit a copy of the completed forms to your local Nortec representative.
B.1.1 Pre-Start-UpChecklist
Inspect the site services and the installation, and ll out the form below. Note: When lling out the form leave the checkbox un-checked if the item does not apply, or if the requirement is not satised.
SerialNumber: Tag:
Model: Capacity: VoltageandPhase:
Customer/Job: Nortecrepresentative:
Customer
Address:
Site Ambient Conditions
Ambient temperature:
(Permissible range – 41-104 °F (5-40 °C))
Ambient humidity level:
(Permissible range – 5-95% RH, non-condensing)
Site Water Supply
Well water
City water
Softened water
(Not recommended for EL series)
Reverse osmosis (RO)
(Not permitted for EL series)
De-ionized water (DI)
(Not permitted for EL series)
Refer to Table 4 on page 15 for water quality requirements. Note: Run the water for approximately ve minutes before performing the tests:
Site Water Quality Measurement*
Conductivity (μS/cm):
Hardness (gpg):
Silica (ppm):
Chlorides (ppm):
pH level:
* Test sample must be collected as close as possible to the ll valve in the humidier, so that the sample reects the characteristics of the supply water entering the unit.
Page 72
iv Appendix-B
2582302_C_EN_1611 Nortec EL
SiteWaterSupply,continued...
Note: For units with dual steam cylinders, check water supply to
each ll valve.
Water supply pressure meets require­ment:
(Permissible range – 30-80 psig (207-550 kPa) Select checkbox, or enter measurement, as appropri­ate).
Water supply pipe sized correctly:
(Minimum 1/2 in (13 mm) diameter required).
Water supply temperature meets require­ment:
(Permissible range – 34-104 °F (1-40 °C) Select checkbox, or enter measurement, as appropri­ate).
Water supply piping material:
(Copper, stainless steel or plastic certied for drinking water systems permitted).
Filter installed close to humidier:
(5 μm – optional, but recommended)
Shutoff valve and union tting installed:
No pressure surges:
(Surge protection device must be installed, if neces­sary).
All debris ushed from supply line:
No leakages in supply line:
Drainage
Humidier drain pipe diameter meets requirement:
(Minimum 7/8 in (22 mm) diameter required).
Humidier drain piping material meets requirement:
(Must handle temperatures to 212 °F (100 °C)).
Drain pipe sloped adequately:
(Minimum downslope of 1 in/48 in (1.2°) to air gap funnel).
Air gap funnel size meets requirement:
(Minimum 2-1/2 in (64 mm) diameter required).
Drain pipe does not touch sides or bot­tom of air gap funnel:
Air gap funnel location does not permit any rising steam to enter control cabinet:
Separate air gap funnels (for large units with dual cylinders), and combined drain size meets requirement:
(Drain lines from large units must empty into separate open air gap funnels before connecting to the drain. Combined drain line minimum 1.5 in (38 mm) ID).
Drainage rate if building drain meets requirement:
(Minimum 2.3 gal/min (8.7 L/min) per steam cylinder required).
Building drain piping material meets requirement:
(Only copper or stainless steel permitted).
HumidierMounting
Refer to Figure 6 on page 17 for clearances.
Non-combustible mounting surface?
(Withstand temperatures 140-158 °F (60-70 °C))
Unit level?
Front clearance:
Left side clearance:
Right side clearance:
Ground clearance:
Overhead clearance:
Steam Line(s)
Note: For units with dual steam cylinders, check steam line con­nected to each cylinder.
Steam line diameter meets requirement:
(Refer to Table 6 on page 28 for steam line diameter).
Steam line piping material meets require­ment:
(Copper (MED Type-L) or stainless steel (minimum DIN
1.4301) required).
Type of insulation:
Slope of steam line meets requirement:
(Minimum constant upslope of 2 in/12 in (10°), or mini­mum constant downslope of 1/2 in/12 in (2°) required).
Steam line rises straight up minimum 12 in (300 mm) before rst bend:
Steam lines do not reduce in diameter or merge, except at steam distributor:
No restrictions/kinks in steam line:
Steam line fully supported, with no sags:
All debris ushed from steam line:
Backpressure meets requirement:
(Maximum permissible static pressure and backpres­sure in steam line – 5.5 in H2O (1.37 kPa); or 10 in H2O (2.49 kPa) with the optional ll cup extension)
Duct static pressure:
(Enter static pressure (if available), and if positive or negative pressure).
Page 73
vAppendix-B
Nortec EL
2582302_C_EN_1611
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 9 in (200 mm) required).
Condensate trap drop meets require­ment:
(Minimum 12 in (300 mm) below condensate Tee and steam distributor required).
Condensate traps installed at all low points, and horizontal-to-vertical transi­tions in steam line:
Condensate traps installed at regular intervals on long runs exceeding 15 ft (4.5 m):
Condensate lines have individual traps before emptying into a common drain:
Condensate lines connect to:
(Humidier or drain)
No restrictions/kinks in condensate line:
All debris ushed from condensate line:
Condensate cooling installed, (if required by local code):
All condensate traps primed:
Electrical Power Connections
Power supply meets voltage and current requirements shown on specication label:
Dedicated external fused disconnect switch installed to local code:
(Fusing must not exceed the maximum current rating shown on specication label).
Dedicated external non-fused disconnect switch (if installed) located in vicinity of humidier:
Phase-to-phase voltage measurements:
All contactor screws torqued properly:
(Refer to label on contactor for correct torque value).
Proper grounding:
(Green wire must be connected to GND in the supply)
All wiring and connectors fastened securely:
Controls
Note: If Nortec control devices are installed, enter their locations below; otherwise leave empty.
Nortec humidity controls location:
Nortec high limit switch location:
(Minimum 3× absorption distance from the distributor required).
Nortec air proving switch location:
Page 74
vi Appendix-B
2582302_C_EN_1611 Nortec EL
B.1.2 Performance Checklist
Complete the performance tests after inspecting the site services and the installation, then ll out the form be­low. Note: When lling out the form leave the checkbox un-checked if the item does not apply, or if the require­ment is not satised. Enter all notes and exceptions in the space provided on page vii.
Distribution System
Note: For commissioning the distribution system itself, refer to the individual commissioning checklist for the distribution system.
SAM-e
Mini-SAM-e
Blower Pack
ASD/BSD/CSD
Model:
Number of XSD units:
Distance to obstruction:
(Minimum 1× absorption distance required from the distributor to rst obstruction (coil/bend ) downstream).
Distance to lter:
(Minimum distance between the distributor and lter downstream – 1.5-2× absorption distance for class C lter, and 2.5-3× absorption distance for sub-micron particle lter).
Preliminary
Pre-start-up checklist completed:
Gas leakage test inside unit completed:
Check for water leaks inside unit com­pleted:
Steam cylinder seated properly in its base:
Condensate trap inside the unit primed:
(Nortec GS CS/NX models only).
All access panels installed and fastened securely:
Start-Up
Shutoff valve in water supply line open:
Fill tests completed successfully:
Ignition safety shutoff test completed successfully:
Manual gas shutoff valve open:
On/Off switch set to the On position:
Software version:
Controls
Select the type of signal input connected to the channels of the low voltage termi­nal strip #1:
(Enter setpoint value (if applicable) in the eld below the checkbox).
Demand Humidistat
(modulating)
On/Off Humidistat
Transducer
(modulating)
Digital Controls
CH 1:
CH 2:
On/Off:
If a second set of inputs is connected to the channels of the low voltage terminal strip #2 (on dual cylinder units running in independent mode only), select the type of signal input connected to the terminal strip #2:
(Enter setpoint value (if applicable) in the eld below the checkbox).
Demand Humidistat
(modulating)
On/Off Humidistat
Transducer
(modulating)
Digital Controls
CH 1:
CH 2:
On/Off:
Control signal conguration in the soft­ware matches inputs connected to unit:
Page 75
viiAppendix-B
Nortec EL
2582302_C_EN_1611
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:
Humidier responds to control signal interruption:
Notes
Enter notes and exceptions in the space below.
Notes:
Commissioned by: Commissioning Date:
Company:
To print the completed forms (if using an electronic version of the manual), select the Print Form button above. In the Print dialog box that appears, select the page numbers under Pages to Print, and the Fit option under Page Sizing & Handling. Click Print.
To save the completed electronic forms, rst select the Save Form button above, and select "Adobe PDF" from the Printer drop-down list in the dialog box. Then select the page numbers, and click Print. Finally, enter a le name in the dialog box, and click Save.
Page 76
viii Appendix-B
2582302_C_EN_1611 Nortec EL
Page 77
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 (with the exception of the cylinder), are free from defects in material and workmanship. No warranty is made against corrosion, deterioration, or suitability of substituted materials used as a result of compliance with government regulations.
THE COMPANY’s obligations and liabilities under this warranty are limited to furnishing replacement parts to the customer, F.O.B. THE COMPANY’s factory, provided that the defective part(s) is returned freight prepaid by the customer. The replacement parts are warranted for the balance of the term of the warranty on the original humidier or 90 days, whichever is longer.
The warranties set forth herein are in lieu of all other warranties expressed or implied by law. No liability whatsoever shall be attached to THE COMPANY until said products have been paid for in full and then said liability shall be limited to the original purchase price for the product. Any further warranty must be in writing, signed by an ofcer of THE COMPANY.
THE COMPANY’s limited warranty on accessories, not manufactured by the COMPANY, such as controls, humidistats, pumps, etc., is limited to the warranty of the original equipment manufacturer from date of original shipment of humidier.
THE COMPANY makes no warranty and assumes no liability unless the equipment is installed in strict accordance with a copy of the catalog and installation manual in effect at the date of purchase, and by a contractor approved by THE COMPANY to install such equipment.
THE COMPANY makes no warranty and assumes no liability whatsoever for consequential damage or dam­age resulting directly from misapplication, incorrect sizing or lack of proper maintenance of the equipment.
THE COMPANY makes no warranty and assumes no liability whatsoever for damage to the humidier, supply lines, drain lines, or steam distribution systems caused by freezing.
THE COMPANY reserves the right to change the design, specications and performance criteria of its products without notice or obligation.
Page 78
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
Consulting, Sales and Service:
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