Condair 2584597-D EL & RS Outdoor Installation guide

Condair 2584597-D EL & RS Outdoor Installation guide
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
IMPORTANT! Read and save these instructions. This manual to be left with the equipment.
NORTEC
NORTEC
INSTALLATION, OPERATION
AND MAINTENANCE MANUAL
Outdoor Steam Humidifier
Nortec EL / RS-Series
Humidification and Evaporative Cooling
Thank you for choosing Condair
Installation date (DD/MM/YYYY):
Commissioning date (DD/MM/YYYY):
Site:
Model:
Serial number:
Manufacturer
Condair Ltd.
2740 Fenton Road, Ottawa, ON, Canada K1T 3T7
Tel. 1.866.667.8321, Fax 613.822.7964
[email protected], www.condair.com
Proprietary Notice
This document and the information disclosed herein are proprietary data of Condair Ltd. Neither this document, nor
the information contained herein shall be reproduced, used, or disclosed to others without the written authorization
of Condair Ltd., except to the extent required for installation, operation or maintenance of the customer's equipment.
Liability Notice
Condair 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 Condair Ltd.
Copyright Notice
Copyright 2019, Condair Ltd, All rights reserved.
Unistrut® is a trademark of Unistrut Corporation.
Technical modification rights reserved.
Contents
1
1.1
1.2
Introduction
Before You Start!
General
5
5
5
2
For Your Safety
7
3
3.1
3.2
Receiving and Storage
Inspection
Storage and Transportation
9
9
9
4
4.1
4.2
4.3
4.4
4.5
Product Overview
General Description
Model Designation
Models Overview
Options
Accessories
11
11
13
14
15
15
5
5.1
5.2
5.2.1
5.2.2
5.2.3
5.3
5.4
5.4.1
5.4.2
5.4.3
5.4.4
5.4.5
5.4.6
5.5
5.5.1
5.5.2
5.6
5.6.1
5.6.2
5.6.2.1
5.6.2.2
5.6.3
5.7
5.7.1
5.7.2
Installation
General
Installation Overview
Air Handling Unit
Rooftop Curb
Exterior Wall
Site Requirements
Mounting the Humidifier
Location and Suggested Clearances
Pipe Chase Location
Air Handling Unit Mounting
Rooftop Curb Mounting
Exterior Wall Mounting
Mounting Checklist
Steam Line Connections
Steam Line
Steam Connections Checklist
Water Connections
Water and Drain Lines
External Freeze Protection System
Normally-Open and Normally-Closed Valves
3-Way Normally-Closed Valve
Water Connections Checklist
Electrical Connections
Outdoor Enclosure Wiring Diagram
Electrical Connections Checklist
17
17
18
18
20
22
24
26
26
27
28
30
32
34
34
34
35
36
36
38
38
39
40
40
42
42
6
6.1
6.2
Commissioning
General
Commissioning
43
43
43
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Contents
3
4
7
7.1
7.2
7.3
7.3.1
7.3.2
7.3.3
7.3.4
7.3.5
7.3.6
7.3.7
Operation and Maintenance
Operating the Unit
Inspections During Operation
Maintenance
General
Heater and Fan
Freeze Protection System
Steam Cylinder
Cleaning
Scale Management (Nortec RS-OC Units only)
Restarting After a Freeze-up
45
45
45
46
46
46
46
47
47
47
48
8
Spare Parts List
49
9
9.1
9.2
9.3
Decommissioning
General
Removal from Service for Disposal or Long-term Storage
Disposal/Recycling
57
57
57
58
10
10.1
10.2
10.3
10.4
Product Specifications
Performance Data
Operating Data
Weights
Dimensions
59
59
59
59
60
A
A.1
Appendix
Weather Data
63
63
B
B.1
Appendix
Installation Checklist
67
67
Contents
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
1
Introduction
1.1
Before You Start!
Thank you for purchasing the Nortec EL/RS Outdoor humidifier.
The Nortec EL/RS Outdoor humidifier incorporates the latest technical advances and meets recognized
safety standards. Never-the-less, improper use of the Nortec EL/RS Outdoor humidifier 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/RS Outdoor humidifier, please observe
and comply with all information and safety instructions contained in this manual, as well as all relevant
documentation of components of the installed humidification system.
If you have additional questions, please contact your Condair representative. They will be glad to assist
you.
1.2
General
Limitations
The subject of this manual is the Nortec EL/RS Outdoor humidifier. It is intended as a supplement to
the Nortec EL/Nortec RS installation, operation and maintenance manuals. The various options and
accessories for the Nortec EL/RS Outdoor humidifier may only be described in-so-far as is necessary
for proper installation and operation of the equipment. Additional information on available options and
accessories can be obtained in the instructions that are supplied with them.
This manual is intended for well trained personnel who are suitably qualified for their respective tasks.
About this Manual
This manual contains supplementary information that applies specifically to the
Nortec EL/RS Outdoor humidifier. The Nortec EL/Nortec RS manuals included with the
Nortec EL/RS Outdoor humidifier shipment contain information on installation, operation and maintenance which apply to both the indoor and outdoor models.
For information on the installation of controls, interior piping, interior wiring and steam lines refer to the
respective Nortec EL/Nortec RS installation manual.
The operation of the Nortec EL/RS Outdoor humidifier is identical to the indoor units. Refer to the respective Nortec EL/Nortec RS operation and maintenance manual for details.
The maintenance items described in this manual are specific to the outdoor model. This is in addition to
the regular maintenance that is described in the Nortec EL/Nortec RS operation and maintenance manual.
All illustrations in this manual are for representation purposes only. Actual appearance may vary.
Safety Warnings Usage
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.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Introduction
5
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 specific 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 specific
danger symbols may also be used in place of the general symbol.
Other Related Publications
Refer to "About this Manual" on page 5.
Storage of Manual
Keep this manual in a place where it is safe and readily accessible. If the equipment is moved to another
location, please make sure that it remains with the equipment.
If the manual is lost or misplaced, please contact your Condair representative for a replacement.
6
Introduction
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
2
For Your Safety
General
Every person who is tasked with the installation, operation and maintenance of the
Nortec EL/RS Outdoor humidifier must read and understand this manual, as well as the respective
Nortec EL/Nortec RS installation, operation and maintenance manuals before performing any work.
Knowing and understanding the contents of these manuals 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/RS Outdoor humidifier must be observed and
kept in a readable state.
Personnel Qualifications
All procedures described in this manual must only be performed by personnel who are adequately qualified, 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 qualified personnel authorized by Condair.
All personnel working with the Nortec EL/RS Outdoor humidifier must be familiar with, and comply with
the appropriate regulations on workplace safety and prevention of accidents.
Intended Use
The Nortec EL/RS Outdoor humidifier is intended exclusively for air humidification using a Condair-approved steam distributor within specified operating conditions (refer to "Operating Data" on page 59 and "Site
Requirements" on page 20 for details). Any other type of application, without the express written consent
of Condair, is considered to be NOT conforming to its intended purpose, and may lead to dangerous
operation and will void the warranty.
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.
Safety Precautions that Must be Observed
DANGER!
Risk of electric shock!
The Nortec EL/RS Outdoor humidifier is mains powered. Live parts may be exposed when
the door panels are opened. Touching live parts may cause severe injury or even death.
Prevention:
The Nortec EL/RS Outdoor humidifier 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.
Only qualified personnel should perform maintenance or repairs on the unit.
DO NOT service the unit while standing on wet or icy surfaces, or in wet weather.
Follow lockout procedures whenever servicing the unit.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
For Your Safety
7
WARNING!
Risk of severe burns from contact with hot steam vapors!
The Nortec EL/RS Outdoor humidifier produces hot steam vapors for humidification. Bare skin in
contact with hot steam vapors can result in severe burns.
Prevention: Never perform any work on the steam system (including the steam lines, steam distributors, etc.) while the humidifier is operating. Shut down the humidifier and wait for the components
to cool down before working on the steam system.
WARNING!
Risk of severe burns from contact with hot surfaces!
The components in the humidifier plumbing cabinet get very hot during operation. Bare skin in contact with hot surfaces can result in severe burns.
Prevention: Avoid contact with hot surfaces. Shut down the humidifier and wait for the components
to cool down before working on the unit.
CAUTION!
Electrostatic discharge (ESD)!
The components in the control cabinet 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.
Preventing Unsafe Operation
All personnel working with the Nortec EL/RS Outdoor humidifier must immediately report to the customer
any alterations to the unit that may affect safety, and secure the humidifier against accidental power-up.
Modifications to the Unit Prohibited
Modifications are NOT permitted on the Nortec EL/RS Outdoor humidifier without the express written
consent of Condair.
8
For Your Safety
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
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 Condair representative within 48 hours of receipt of the goods. Condair
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, capacity and voltage on the specification label to ensure that it is suitable for
your installation site. Refer to Figure 3 on page 13.
3.2
Storage and Transportation
Moving and Handling the Unit
The Nortec EL/RS Outdoor humidifier is bolted to a shipping skid and enclosed in a packaging crate
before it is shipped from the factory. While still attached to the skid, the humidifier can be lifted onto a
rooftop or other mounting location using a forklift or crane. Refer to Table 9 on page 59 for weights.
CAUTION!
Risk of damage to equipment.
Prevention: DO NOT drop the humidifier when handling the unit. Protect the unit from damage by
tethers and other lifting equipment.
Storage
Store the Nortec EL/RS Outdoor humidifier 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.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Receiving and Storage
9
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10
Receiving and Storage
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
4
Product Overview
4.1
General Description
The Nortec EL/RS Outdoor humidifier is UL-approved for installation outdoors. It is housed in an enclosure
that has an IP55 rating, and comes with built-in heating, ventilation and freeze protection for the plumbing components. The unit is intended to operate in -40 °F to 104 °F (-40 °C to +40 °C) temperatures.
The Nortec EL/RS Outdoor humidifier 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 14.
2
1
3
Figure 1: Nortec EL/RS Outdoor Steam Humidifier Model Sizes
1
2
3
Small housing, Nortec EL-OC
Medium housing, Nortec EL/Nortec RS-OC
Large housing, Nortec EL/Nortec RS-OC
Figure 2 on page 12 shows the major components of the Nortec EL/RS Outdoor humidifier. The built-in
heating system consists of a heater that is activated during the winter months, and controlled by an
internal thermostat to maintain an appropriate operating temperature inside the enclosure. The heat
control is automatic, and cannot be activated manually.
In addition, a mechanical freeze protection valve drains all the water from the steam cylinder(s), fill cup,
valves and hoses to prevent freeze up when the temperature inside the enclosure drops down to 43 °F
(6 °C).
During warm weather, a weather-shielded exhaust fan moves air through the enclosure to maintain an
appropriate operating temperature. The exhaust fan is automatically controlled by a thermostat, and
cannot be activated manually.
The Nortec EL/RS Outdoor humidifier is also equipped with a remote fault indication board (standard,
not shown) that can be used to remotely monitor the unit.
All other features of the Nortec EL/RS Outdoor humidifier are similar to the Nortec EL/Nortec RS humidifier. Refer to the respective Nortec EL/Nortec RS humidifier manuals for details.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Product Overview
11
A
16
13
14
1
15
11
2
10
12
-A-
3
4
9
8
7
6
5
Figure 2: Nortec EL/RS Outdoor Humidifier (medium size unit shown)
1
2
3
4
5
6
7
8
12
Side door
Controls cabinet
Touchscreen display
Intake shroud (and filter)
Mechanical freeze protection valve (Nortec RS-OC with
scale tank)
Cylinder, steam (Nortec RS-OC)
Heater
Switch, On/Off
Product Overview
9 Front door
10 Mechanical freeze protection valve (Nortec EL-OC and
Nortec RS-OC without scale tank)
11 Steam cylinder (Nortec EL-OC)
12 Mounting bracket
13 Steam outlet
14 Exhaust shroud
15 Exhaust fan (and filter)
16 Plumbing cabinet
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
4.2
Model Designation
The specification label on the side of the Nortec EL/RS Outdoor humidifier shows its model number,
serial number and ratings – refer to Figure 3. The breakdown of the model number is shown in Figure 4.
LISTED
+80,',),(5
;
MODEL: XXXXXXXXXXXXXXXXXXXXXXXX
S/N: XXXXXXX
VOL TS: XXXXXXXXXXXX PHASE:
AMPS: XXXXX
XXXXXXXXX
KW :
HZ:
MAX:
XXX AMPS
Circuit Protection
XXXX
XXXXXX
DATE: XXXXXXXXX
MADE IN CANADA
XXXXXXXX B
Figure 3: Nortec EL/RS Outdoor Steam Humidifier Specification Label
Nortec EL-OC 100 480V/3
Product Series:
Nortec EL-OC = Nortec EL Outdoor Cabinet
Nortec RS-OC = Nortec RS Outdoor Cabinet
Steam Capacity (lb/h):
Heating voltage and phase:
Figure 4: Model Breakdown
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Product Overview
13
4.3
Models Overview
The Nortec EL/RS Outdoor humidifier is available in different sizes with different heating voltages and
steam capacities as shown in Table 1 below.
Table 1: Nortec EL/RS Outdoor Steam Humidifier Models
110120V/1~
208V/1~
220240V/1~
277V/1~
380415V/1~
440480V/1~
550600V/1~
208V/3~
220240V/3~
380V/3~
440480V/3~
550600V/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)
EL-OC
005
5
(2.2)
–
–
–
–
–
–
–
–
–
–
–
EL-OC
010
–
10
(4.5)
10
(4.5)
10
(4.5)
10
(4.5)
10
(4.5)
10
(4.5)
–
–
–
–
–
EL-OC
020
–
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
20
(9)
EL-OC
030
–
–
–
–
–
–
30
(13.6)
30
(13.6)
30
(13.6)
30
(13.6)
30
(13.6)
EL-OC
050
–
–
–
–
–
–
50
(22.7)
50
(22.7)
50
(22.7)
50
(22.7)
50
(22.7)
EL-OC
075
–
–
–
–
–
–
75
(34)
75
(34)
75
(34)
75
(34)
75
(34)
EL-OC
100
–
–
–
–
–
–
90
(41)
100
(45)
100
(45)
100
(45)
100
(45)
RS-OC
010
–
10.9
(4.9)
10.9
(4.9)
–
–
9.7
(4.4)
11.4
(5.2)
10.9
(4.9)
10.9
(4.9)
–
11.3
(5.1)
11.1
(5.0)
RS-OC
015
–
15.9
(7.2)
14.5
(6.6)
–
–
14.1
(6.4)
14.7
(6.7)
15.9
(7.2)
14.5
(6.6)
–
14.6
(6.6)
17.6
(8.0)
RS-OC
020
–
21.2
(9.6)
21.2
(9.6)
–
–
18.8
(8.5)
19.6
(8.9)
21.2
(9.6)
21.2
(9.6)
–
19.4
(8.8)
22.8
(10.3)
RS-OC
030
–
31.8
(14.4)
31.8
(14.4)
–
–
31.5
(14.3)
31.4
(14.2)
28.8
(13.1)
31.8
(14.4)
–
31.5
(14.3)
31.4
(14.2)
RS-OC
045
–
–
–
–
–
–
–
47.7
(21.6)
47.9
(21.7)
–
45.2
(20.5)
47.1
(21.4)
RS-OC
065
–
–
–
–
–
–
–
71.6
(32.5)
71.9
(32.6)
–
63.0
(28.6)
70.6
(32.0)
RS-OC
090
–
–
–
–
–
–
–
–
–
–
94.6
(42.9)
94.3
(42.8)
EL-OC
150*
–
–
–
–
–
–
150
(68)
150
(68)
150
(68)
150
(68)
150
(68)
EL-OC
200*
–
–
–
–
–
–
180
(82)
200
(91)
200
(91)
200
(91)
200
(91)
RS-OC
090*
–
–
–
–
–
–
–
95.4
(43.3)
94.6
(42.9)
–
–
–
RS-OC
130*
–
–
–
–
–
–
–
143.2
(65.0)
141.8
(64.3)
–
126.0
(57.2)
141.2
(64.1)
RS-OC
180*
–
–
–
–
–
–
–
–
–
–
189.2
(85.8)
188.6
(85.5)
Housing
Size
Nortec
Model
S
M
M
L
L
* These models have two steam cylinders.
14
Product Overview
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
4.4
Options
Table 2 shows the list of options for the Nortec EL/RS Outdoor humidifier. Contact your local Condair
representative for details.
Table 2: Nortec EL/RS Outdoor Humidifier Options
Option
4.5
Application
Mounting bracket
Provides a means to attach the unit to an air handling unit or an exterior wall.
Scale tank (Nortec RS-OC
only)
Provides a separate reservoir underneath the steam cylinder for scale collection. The addition of this option reduces maintenance time significantly. Minerals removed from the water
during steam production will collect in the scale reservoir rather than in the tank. For the unit
with two steam cylinders (Nortec RS-OC 90, 130 and 180), order two for each humidifier.
Accessory relay PCB
(printed circuit board)
Printed circuit board with relay contacts for connecting other accessories such as fans and
supply water flushing valves.
Internal primary fusing
(Nortec EL-OC only)
Optional internal fuse for heating voltage power supply in the Nortec EL-OC models (only).
Only available as a factory-installed option. Note: This is not a substitute for a dedicated
external disconnect switch.
BACnet MSTP BTL
PCB to provide BTL-certified BACnet MS/TP. This option also enables full Master functionality when using BACnet MS/TP.
BACnet IP BTL
PCB to provide BTL-certified BACnet IP.
LonWorks board
Supplementary board to connect the humidifier to a building management system using
LonWorks.
Accessories
Table 3 shows the list of accessories for the Nortec EL/RS Outdoor humidifier. Contact your local Condair
representative for details. To install and operate the accessories, please refer to the instructions supplied
with the accessories.
Table 3: Nortec EL/RS Outdoor Humidifier Accessories
Accessory
Application
Steam distributor
Steam distribution system for use in an air duct.
SAMe steam distribution
manifold
Steam distribution system for use in an air duct where reduced absorption distance is required.
Digital or analog control
humidistat with either On/Off
or modulating operation
Input device used to meter the output of the humidifier based on the sensed relative humidity.
The humidistat can be installed in the conditioned space that is being humidified, or within
the duct.
Digital RH transducer
Input device used to communicate the relative humidity in a conditioned space or a duct to
the humidifier.
Digital or analog high limit
humidistat with either On/Off
or modulating operation
Input device used to limit the output of the humidifier 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 humidification 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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Product Overview
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Product Overview
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Nortec EL/RS Outdoor
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.
Comply with all local and national codes dealing with water, steam and electrical installations.
Condair does not accept any liability for installation of humidification equipment by unqualified personnel,
or the use of equipment/parts that are not authorized by Condair.
Personnel Qualifications
All installation work must be performed only by licensed personnel authorized by the customer. It is the
customer’s responsibility to verify qualifications of the personnel.
Safety
Observe all safety precautions noted in "For Your Safety" on page 7.
Nortec EL/RS Outdoor
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Installation
17
5.2
Installation Overview
The Nortec EL/RS Outdoor humidifier can be installed in three different ways – mounted directly on a
suitably reinforced vertical surface on the air handling unit (AHU), rooftop on a curb, or a suitable vertical
surface on an exterior wall. Figure 5, Figure 6 on page 20 and Figure 7 on page 22 show overviews of the
different mounting arrangements.
5.2.1
Air Handling Unit
15
14
1
2
3
ON
OFF
15 in (380 mm)
min. clearance
4
13
5
11
6
10
12
9
7
8
Figure 5: Typical Installation on Air Handling Unit (medium size unit shown)
18
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Nortec EL/RS Outdoor
Legend:
1 Air handling unit
2 Steam outlet, connection into distributor system inside air handling unit
3 External fused disconnect switch (supplied by others)
4 Pipe chase (drain lines). See Note 1 below.
5 Drain line (freeze protection valve), 3/8 in (9.5 mm) I.D. See Note 2 below.
6 Drain line (main) – 1-3/16 in (30 mm) I.D. See Note 2 below.
7 Air gap funnel. See Note 3 below.
8 Filter, 5 μm (optional, but recommended)
9 Shutoff valve (supplied by others)
10 Union fitting (supplied by others)
11 3-way normally-closed valve, or normally-open and normally-closed valves (supplied by others). See Note 4 below.
12 Pipe chase (water supply line)
13 Water supply line, minimum 1/2 in (13 mm). See Note 5 below.
14 Mounting bar (supplied – ×2 for small unit, ×3 for medium/large unit) secured to air handling unit. See Note 6 below.
15 Mounting bracket (×2 for small unit, ×3 for medium/large unit) secured to back of humidifier
Note 1: Route all drain lines through a pipe chase (recommended). Seal the pipe chase to prevent rising steam from entering the bottom of the humidifier enclosure, and to isolate the unit from the pressure
inside the building.
Note 2: In cold climates all drain lines must be properly trace heated and insulated to prevent freezing.
Note 3: It is recommended that the air gap funnel be located inside the building, as shown, and connected to a dedicated building drain (recommended) with a drainage capacity of at least 2.3 gpm (8.7
L/min) for an Nortec EL-OC unit and 6.7 gpm (30 L/min) for a Nortec RS-OC unit – per steam cylinder.
The drain line exiting the funnel should be minimum 7/8 in (22 mm) in diameter for an Nortec EL-OC
unit, and minimum 1-3/4 in (45 mm) for a Nortec RS-OC unit. The drain lines into the funnel must not
touch the sides or bottom of the funnel. In large units, separate air gap funnels must be used for drain
lines from each cylinder.
Note 4: In cold climates the water supply line should be protected with a freeze protection system utilizing
either a normally-open and a normally-closed valve, or a 3-way normally-closed valve. Refer to "External
Freeze Protection System" on page 38 for details.
Note 5: The water supply line should have a 1/2 in NPT female end for connection to the unit. It is recommended to route the line through a pipe chase. In cold climates it must be properly trace heated and
insulated to prevent freezing.
Note 6: The supplied mounting bars must be installed on a reasonably flat vertical mounting surface on
the air handling unit, that is stable and suitably reinforced (strength equivalent to 2×4 stud or 1-5/8 in ×
1-5/8 in ×12 gauge Unistrut® channel). Make sure that the mounting surface is capable of supporting
the entire weight of the unit when it is in operation. Refer to Table 9 on page 59 for weight of the unit.
This mounting arrangement is advantageous because the steam piping is shorter, thus minimizing
condensate losses and backpressure in the line. Do not install the Nortec EL/RS Outdoor humidifier in
an outdoor environment where the unit is exposed to severe weather or where the temperature drops
below -40 °F (-40 °C).
IMPORTANT! In units operating in cold climates, the area around the unit must kept clear of snow
and ice accumulation to permit opening and closing of the front and side doors.
Refer to "Site Requirements" on page 24, and "Air Handling Unit Mounting" on page 28 for mounting details. Make
sure the required clearance is maintained – refer to Figure 8 on page 26. Observe all local and national
installation codes. Condair is not responsible for any installation code violations.
The water supply and all drain lines must be properly trace heated and insulated to prevent freezing.
IMPORTANT! The warranty does not cover damage to the humidifier resulting from freezing.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
19
5.2.2
Rooftop Curb
1
2
14
ON
OFF
3
4
13
5
6
11
12
10
7
9
8
Figure 6: Typical Installation on Rooftop Curb (medium size unit shown)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
Steam line, must maintain a constant minimum upslope of 10° or downslope of 2°, and must be insulated
External fused disconnect switch (supplied by others)
Curb. See Note 1 below.
Pipe chase (drain lines). See Note 2 below.
Drain line (freeze protection valve), 3/8 in (9.5 mm) I.D. See Note 3 below.
Drain line (main) – 1-3/16 in (30 mm) I.D. See Note 3 below.
Air gap funnel. See Note 4 below.
Filter, 5 μm (optional, but recommended)
Shutoff valve (supplied by others)
Union fitting (supplied by others)
3-way normally-closed valve, or normally-open and normally-closed valves (supplied by others). See Note 5 below.
Pipe chase (water supply line)
Water supply line, minimum 1/2 in (13 mm). See Note 6 below.
Pipe chase (steam line)
Note 1: The curb must be capable of supporting the entire weight of the unit when it is in operation –
refer to Table 9 on page 59. The curb must be properly anchored to the rooftop.
Note 2: Route all drain lines through a pipe chase (recommended). Seal the pipe chase to prevent rising
steam from entering the bottom of the unit, and to isolate the unit from the pressure inside the building.
Note 3: In cold climates all drain lines must be properly trace heated and insulated to prevent freezing.
20
Installation
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Nortec EL/RS Outdoor
Note 4: It is recommended that the air gap funnel be located inside the building, as shown, and connected to a dedicated building drain (recommended) with a drainage capacity of at least 2.3 gpm (8.7
L/min) for an Nortec EL-OC unit and 6.7 gpm (30 L/min) for a Nortec RS-OC unit – per steam cylinder.
The drain line exiting the funnel should be minimum 7/8 in (22 mm) in diameter for an Nortec EL-OC
unit, and minimum 1-3/4 in (45 mm) for a Nortec RS-OC unit. The drain lines into the funnel must not
touch the sides or bottom of the funnel. In large units, separate air gap funnels must be used for drain
lines from each cylinder.
Note 5: In cold climates the water supply line should be protected with a freeze protection system utilizing
either a normally-open and a normally-closed valve, or a 3-way valve. Refer to "External Freeze Protection
System" on page 38 for details.
Note 6: The water supply line should have a 1/2 in NPT female end for connection to the unit. It is recommended to route the line through a pipe chase. In cold climates it must be properly trace heated and
insulated to prevent freezing.
The Nortec EL/RS Outdoor humidifier is designed to be mounted on a curb. When choosing this mounting
arrangement, locate the humidifier as close as possible to the steam distributor to minimize condensate
losses and backpressure in the line. Do not install the Nortec EL/RS Outdoor humidifier in an outdoor
environment where the unit is exposed to severe weather or where the temperature drops below -40 °F
(-40 °C).
IMPORTANT! In units operating in cold climates, the area around the curb must kept clear of snow
and ice accumulation to permit opening and closing of the front and side doors in the unit.
Refer to "Site Requirements" on page 24, and "Rooftop Curb Mounting" on page 30 for mounting details. Make
sure the required clearance is maintained – refer to Figure 8 on page 26. Observe all local and national
installation codes. Condair is not responsible for any installation code violations.
The water supply and all drain lines must be properly trace heated and insulated to prevent freezing.
IMPORTANT! The warranty does not cover damage to the humidifier resulting from freezing.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
21
5.2.3
Exterior Wall
14
1
13
2
ON
OFF
8
9
10
11
12
7
15 in (380 mm) min.
ground clearance
6
3
5
4
Figure 7: Typical Installation on an Exterior Wall (medium size unit shown)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
22
Installation
Pipe chase (steam line)
External fused disconnect switch (supplied by others)
Pipe chase (drain lines). See Note 1 below.
Pipe chase (water supply line)
Drain line (freeze protection valve), 3/8 in (9.5 mm) I.D. See Note 2 below.
Air gap funnel. See Note 3 below.
Drain line (main) – 1-3/16 in (30 mm) I.D. See Note 2 below.
Shutoff valve (supplied by others)
Filter, 5 μm (optional, but recommended)
Union fitting (supplied by others)
3-way normally-closed valve, or normally-open and normally-closed valves (supplied by others). See Note 4 below.
Water supply line, minimum 1/2 in (13 mm). See Note 5 below.
Mounting bar (supplied – ×2 for small unit, ×3 for medium/large unit) secured to an exterior wall. See Note 6 below.
Mounting bracket (×2 for small, ×3 for medium/large unit) secured to back of humidifier
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
Note 1: Route all drain lines through a pipe chase (recommended). Seal the pipe chase to isolate the
unit from the pressure inside the building.
Note 2: In cold climates all drain lines must be properly trace heated and insulated to prevent freezing.
Note 3: It is recommended that the air gap funnel be located inside the building, as shown, and connected to a dedicated building drain (recommended) with a drainage capacity of at least 2.3 gpm (8.7
L/min) for an Nortec EL-OC unit and 6.7 gpm (30 L/min) for a Nortec RS-OC unit – per steam cylinder.
The drain line exiting the funnel should be minimum 7/8 in (22 mm) in diameter for an Nortec EL-OC
unit, and minimum 1-3/4 in (45 mm) for a Nortec RS-OC unit. The drain lines into the funnel must not
touch the sides or bottom of the funnel. In large units, separate air gap funnels must be used for drain
lines from each cylinder.
Note 4: In cold climates the water supply line should be protected with a freeze protection system utilizing
either a normally-open and a normally-closed valve, or a 3-way valve. Refer to "External Freeze Protection
System" on page 38 for details.
Note 5: The water supply line should have a 1/2 in NPT female end for connection to the unit. It is recommended to route the line through a pipe chase. In cold climates it must be properly trace heated and
insulated to prevent freezing.
Note 6: The supplied mounting bars must be installed on a reasonably flat vertical mounting surface on
the air handling unit, that is stable and suitably reinforced (strength equivalent to 2×4 stud or 1-5/8 in ×
1-5/8 in ×12 gauge Unistrut® channel). Make sure that the mounting surface is capable of supporting
the entire weight of the unit when it is in operation – refer to Table 9 on page 59.
When choosing this mounting arrangement, locate the humidifier as close as possible to the
steam distributor to minimize condensate losses and backpressure in the line. Do not install the
Nortec EL/RS Outdoor humidifier in an outdoor environment where the unit is exposed to severe weather
or where the temperature drops below -40 °F (-40 °C).
IMPORTANT! In units operating in cold climates, the area around the unit must kept clear of snow
and ice accumulation to permit opening and closing of the front and side doors.
Refer to "Site Requirements" below, and "Exterior Wall Mounting" on page 32 for mounting details. Make sure
the required ground clearance is maintained – refer to Figure 8 on page 26. Observe all local and national
installation codes. Condair is not responsible for any installation code violations.
The water supply and all drain lines must be properly trace heated and insulated to prevent freezing.
IMPORTANT! The warranty does not cover damage to the humidifier resulting from freezing.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
23
5.3
Site Requirements
As mentioned previously, the Nortec EL/RS Outdoor humidifier can be mounted on a suitably reinforced
vertical surface on the air handling unit (AHU), a suitably sized curb on the rooftop, or a suitable vertical surface on an exterior wall. Humidifiers typically operate in the cold winter months. As a result they
should be located where services to the unit are not in any danger of freezing, and where it is safe and
convenient for maintenance personnel to service the unit. In addition, the length of the steam line should
be kept as short as possible to minimize heat losses. In all cases consult national and local installation
codes. Condair is not responsible for installation code violations.
IMPORTANT! The warranty does not cover damage to the humidifier caused by neglect or due
to freezing.
Refer to "Installation Overview" on page 18 for the different ways the Nortec EL/RS Outdoor humidifier can
be installed.
In preparation for installation of the Nortec EL/RS Outdoor humidifier, make sure that the following site
requirements are satisfied regardless of the mounting arrangement. Report any discrepancies to the
site engineer.
Mounting
Do not install the Nortec EL/RS Outdoor humidifier in an outdoor environment where the unit is
exposed to severe weather, or where the temperature drops below -40 °F (-40 °C). Refer to Table A1
on page 63 for weather data.
Install the unit with consideration for the potential of strong winds. Install external bracing (supplied
by others) for units exposed to strong winds. Improper installation may cause the unit to fall, resulting
in damage, injury, or death. Comply with local regulations. To determine the prevailing wind speeds
for the selected location, refer to http://windspeed.atcouncil.org/.
IMPORTANT! The warranty does not cover damage to the humidifier or property caused by
strong winds.
Allow adequate clearances around the humidifier for ease of maintenance – refer to Table 4 on page 27
for minimum clearances. Observe all local and national installation codes. Condair is not responsible
for any installation code violations.
Make sure that the structure/surface onto which the humidifier is mounted is stable and suitably reinforced (strength equivalent to 2×4 stud or 1-5/8 in × 1-5/8 in ×12 gauge Unistrut channel) to support
the full operating weight of the humidifier – refer to Table 9 on page 59 for weights.
Steam and Condensate Lines:
When choosing the location of the humidifier, install it as close as possible to the steam distributor
to minimize heat loss through the steam line. The steam line can be connected directly to an AHU
or routed through a pipe chase into the building.
Make sure that the selected location permits proper routing of the steam and condensate lines – refer
to the Nortec EL/Nortec RS manuals for details. The number of bends and the length of the line must
be kept to a minimum so that the total system backpressure does not exceed 5.5 in H2O (1.37 kPa).
The steam line should be routed in such a way that it maintains a constant minimum upslope of 10°
or downslope of 2°.
Provision must be made for condensate removal, and suitable care must be taken to ensure lines
and trap do not freeze.
24
Installation
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Nortec EL/RS Outdoor
Water Supply
To ensure proper functioning of the humidifier in cold climates, the water supply line to the humidifier
MUST be properly trace heated and insulated to prevent freezing. In addition to the freeze protection valve that is integral to the unit, a normally-open and a normally-closed (NO/NC) valve (or a
3-way normally-closed valve) MUST be installed in the water supply line inside the building. Refer
to "External Freeze Protection System" on page 38 for details of the valve(s).
IMPORTANT! The warranty does not cover damage to the humidifier due to freezing.
The water supply line to the unit should have a minimum diameter of 1/2 in (13 mm) with a 1/2 in
NPT female end. The line should also have a shutoff valve and a union fitting inside the building for
ease of maintenance.
Refer to the Nortec EL/Nortec RS manuals for water quality, filtration, temperature and pressure
requirements.
Drainage
The main drain line connected to the unit should have a minimum inner diameter of 7/8 in (22 mm)
for an Nortec EL-OC unit, and 1-3/4 in (45 mm) for a Nortec RS-OC unit.
All drain lines from the unit should empty into an air gap funnel (recommended) that is connected to
a dedicated building drain (recommended) with a drainage capacity of at least 2.3 gpm (8.7 L/min)
for an Nortec EL-OC unit and 6.7 gpm (30 L/min) for a Nortec RS-OC unit – per steam cylinder. All
drain lines from the humidifier can empty into a single air gap funnel. Note: In large units with two
steam cylinders, separate air gap funnels must be used for drain lines from each cylinder.
Some units use a drain pump. Refer to the Nortec EL/Nortec RS manuals for drainage rates and
pressure requirements.
The drain line should be capable of handling water temperatures up to 200 °F (93 °C). During normal
operations the maximum temperature of discharge water is 140 °F (60 °C).
In cold climates all drain lines MUST be properly trace heated and insulated to prevent freezing.
IMPORTANT! The warranty does not cover damage to the humidifier due to freezing.
Power Supply
The power supply to the humidifier should be adequate to match the full voltage and current draw
shown on the specification label of the humidifier – refer to Figure 3 on page 13 for location of the label.
The power supply MUST have an external dedicated fused disconnect switch in the immediate
vicinity of the unit. The fusing must not exceed the maximum circuit protection indicated on the
specification label.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
25
5.4
Mounting the Humidifier
5.4.1
Location and Suggested Clearances
The location of the Nortec EL/RS Outdoor humidifier depends largely on the location of the steam distributor and the preferred mounting arrangement. Figure 8 on page 26 and Table 4 on page 27 show the
suggested minimum clearances regardless of the mounting arrangement selected. The clearance values
shown are for reference only, and are suggested clearances for ease of maintenance. Consult local and
national installation codes. Condair does not accept responsibility for violations of the installation codes.
Note: Although an overhead clearance is not required for operation of the Nortec EL/RS Outdoor humidifier,
adequate overhead clearance must be provided to permit installation of the unit.
D
A
B
C
E
Figure 8: Nortec EL/RS Outdoor Humidifier Suggested Minimum Clearances
26
Installation
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Nortec EL/RS Outdoor
Table 4: Nortec EL/RS Outdoor Humidifier Suggested Minimum Clearances
Housing Size
Nortec Model
Suggested Minimum Clearances
in (mm)
Right Side
"A"
Front "B"
Left Side
"C"
Back "D" *
Ground/
Roof "E" **
Small
EL-OC 005-050
36 (914)
36 (914)
36 (914)
12 (300)
15 (380)
Medium
EL-OC 050-100
and
RS-OC 010-090
36 (914)
36 (914)
36 (914)
12 (300)
15 (380)
Large
EL-OC 150-200***
and
RS-OC 90-180***
36 (914)
36 (914)
36 (914)
12 (300)
15 (380)
*
**
Applies only to units mounted on a rooftop curb
Minimum clearance. Note: In units operating in cold climates, the area around the unit must kept clear of snow and ice accumulation
to permit opening and closing of the front and side doors.
*** Units with two steam cylinders
5.4.2
Pipe Chase Location
It is recommended that all external drain lines and all water supply lines are routed through suitable pipe
chases. Refer to Figure 9 for the general locations of the pipe chases.
2
4 in (100 mm) minimum
1
4 in (100 mm) minimum
Figure 9: Pipe Chase Location
1
2
Pipe chase (drain lines)
Pipe chase (water supply line)
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
27
5.4.3
Air Handling Unit Mounting
Refer to the installation overview in Figure 5 on page 18 and required clearances in "Location and Suggested
Clearances" on page 26, then mount the humidifier on the air handling unit as follows:
1. Select a location where the unit is not exposed to severe weather, or where the temperature drops
below -40 °F (-40 °C), or where strong winds may cause the unit to fall. External bracing (supplied
by others) will be required for units exposed to strong winds.
IMPORTANT! The warranty does not cover damage to the humidifier or property caused by
strong winds.
2. Select a reasonably flat, non-vibrating vertical mounting surface on the air handling unit that is suitably reinforced (strength equivalent to 2×4 stud or 1-5/8 in × 1-5/8 in ×12 gauge Unistrut channel),
and capable of supporting the full operating weight of the humidifier – refer to Table 9 on page 59 for
weights.
3. Mark the attachment points “A” and "B" at the desired position with the help of a level. Refer to Figure 10 on page 29 and Table 5 on page 28.
4. Mark the location of the cutout "C" for the steam line, and cut out a suitable size opening in the air
handling unit. Refer to "Dimensions" on page 60 for the size of the steam outlet.
5. Secure the mounting bars to the air handling unit with four 1/4-20 UNC bolts (supplied by others).
Make sure that the mounting bars are level, and tighten the bolts.
6. (Recommended) Install suitably sized pipe chases for the drain lines and water supply line – refer
to Figure 9 on page 27 for general locations.
7. Remove the shipping straps, the packaging crate and the foam spacers around the unit. Then remove
the shipping screws that secure the unit to the shipping skid from the bottom of the unit.
WARNING!
Heavy object – risk of personal injury and damage to equipment!
Prevention: While the unit is still attached to the shipping skid, raise the humidifier using a
forklift or crane. Protect the unit from damage by tethers and other lifting equipment, and do not
drop the humidifier.
8. Carefully raise the humidifier into position and align the mounting brackets on the back of the humidifier with the installed mounting bars, as shown. Lower the humidifier onto the mounting bars, and
make sure that the unit is seated properly and level.
9. Secure the humidifier to the mounting surface at attachment point(s) "B" with 1/4-20 UNC bolt(s)
(supplied by others). Tighten the bolt(s).
10. Seal the opening in the air handling unit around the steam line.
11. If the unit was attached to the skid and was raised using a forklift or crane, remove the shipping
screws and the shipping skid from the bottom of the unit.
Table 5: Holes Spacing
Housing Size
Dimension
in (mm)
X1
X2*
X3*
X4*
X5
X6
X7
X8
Y1**
Y2
Y3*
Y4
Y5
Small
2.20
(56)
6.00
(152)
2.00
(51)
–
10.21
(259)
–
6.38
(162)
–
15.00
(381)
15.13
(384)
16.00
(406)
0.95
(24)
36.75
(933)
Medium
2.67
(68)
6.00
(152)
2.00
(51)
–
12.67
(322)
–
8.54
(217)
–
15.00
(381)
15.88
(403)
16.00
(406)
4.50
(114)
52.32
(1329)
Large
6.22
(158)
6.00
(152)
2.00
(51)
4.00
(102)
10.07
(256)
24.30
(617)
9.06
(230)
14.30
(363)
15.00
(381)
15.78
(401)
16.00
(406)
9.00
(229)
52.3
(1329)
* Typical
** Minimum clearance
28
Installation
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Nortec EL/RS Outdoor
X7
X8
X7
X7
A
A
Y3
A
A
A
A
Y5
Y3
Y5
Y5
Y3
A
A
A
X2
Y2
X3
Y4
A
A
X2
X3
X3
X4
A
B
B
Y2
B
Y4
Y4
Y1
X2
A
X1
X1
X5
A
Y3
A
Y2
B
Y1
A
Y3
Y1
X5
X1
X5
X6
View -D-
7
11
1
3 4
C
2
A
2
A
3
D
A
B
Y1
4
6
5
Figure 10: Air Handling Unit Mounting
1
2
3
4
5
Mounting bracket, attached to the humidifier rear panel
(×2 for small unit, ×3 for medium and large unit)
Mounting bar, supplied (×2 for small unit, ×3 for medium
and large unit)
Flat washer, 1/4 in diameter (supplied by others)
Bolt, 1/4-20 UNC (supplied by others)
Shipping skid
Nortec EL/RS Outdoor
6
7
8
9
10
11
Screw (used for shipping)
Mounting surface, air handling unit
Outline of unit's rear panel – small size unit, reference
Outline of unit's rear panel – medium size unit, reference
Outline of unit's rear panel – large size unit, reference
Reinforcement for mounting surface (supplied by others)
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Installation
29
5.4.4
Rooftop Curb Mounting
Refer to the installation overview in Figure 6 on page 20 and required clearances in "Location and Suggested
Clearances" on page 26, then install the humidifier on the rooftop curb as follows:
1. Select a location where the unit is not exposed to severe weather, or where the temperature drops
below -40 °F (-40 °C), or where strong winds may cause the unit to fall. External bracing (supplied
by others) will be required for units exposed to strong winds.
IMPORTANT! The warranty does not cover damage to the humidifier or property caused by
strong winds.
2. Choose the location of the curb on the rooftop so that the humidifier is as close as possible to the
steam distributor.
3. Construct the curb to the dimension shown in Figure 11 on page 31 and Table 6. Make sure that the
curb is capable of supporting the full operating weight of the unit – refer to Table 9 on page 59.
IMPORTANT! Make sure that the curb is properly anchored to the rooftop.
4. (Recommended) Cut suitably sized openings in the roof and install pipe chases – refer to Figure 9 on
page 27 for general locations.
5. Remove the shipping straps, the packaging crate and the foam spacers around the unit, but DO NOT
remove the screws at the bottom that secure the unit to the shipping skid.
WARNING!
Heavy object – risk of personal injury and damage to equipment!
Prevention: While the unit is still attached to the shipping skid, raise the humidifier using a
forklift or crane. Protect the unit from damage by tethers and other lifting equipment, and do not
drop the humidifier.
6. Carefully lower the unit onto the curb, then remove the shipping screws and the shipping skid from
the bottom of the unit.
7. Make sure the unit is seated properly and level on the curb, and fasten the unit securely to the curb
using suitable 1/4 in (6 mm) diameter fasteners (supplied by others) through all the pre-drilled holes
in the base of the unit.
Table 6: Curb Dimensions
Housing
Size
30
Installation
Dimension
in (mm)
X
Y
Z
Small
20.1 (511)
13.3 (338)
15 (380)
Medium
25.1 (638)
18.1 (460)
15 (380)
Large
41.1 (1044)
18.1 (460)
15 (380)
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
1
4
3
X
Z
in
.75 )
x. 3 5 mm
a
M (9
Y
2
Figure 11: Rooftop Curb Mounting
1
2
3
4
Fastener (supplied by others)
Curb
Shipping skid
Screw (used for shipping)
Nortec EL/RS Outdoor
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Installation
31
5.4.5
Exterior Wall Mounting
Refer to the installation overview in Figure 7 on page 22 and required clearances in "Location and Suggested
Clearances" on page 26, then install the humidifier on an exterior wall as follows:
1. Select a location where the unit is not exposed to severe weather, or where the temperature drops
below -40 °F (-40 °C), or where strong winds may cause the unit to fall. External bracing (supplied
by others) will be required for units exposed to strong winds.
IMPORTANT! The warranty does not cover damage to the humidifier or property caused by
strong winds.
2. Select a reasonably flat vertical mounting surface on a suitably reinforced exterior wall (strength
equivalent to 2×4 stud or 1-5/8 in × 1-5/8 in ×12 gauge Unistrut channel) that is capable of supporting
the full operating weight of the humidifier – refer to Table 9 on page 59 for the weight.
3. Mark the attachment points “A” and "B" at the desired position with the help of a level. Refer to
Figure 12 on page 33 and Table 7.
4. Mark the location of the cutout "C" for the steam line, and cut out a suitable size opening in the
exterior wall. Refer to "Dimensions" on page 60 for the size of the steam outlet.
5. Secure the mounting bars to the mounting surface with four 1/4-20 UNC bolts (supplied by others).
Make sure that the mounting bars are level, and tighten the bolts.
6. (Recommended) Install suitably sized pipe chases for the drain lines and water supply line – refer
to Figure 9 on page 27 for general locations.
7. Remove the shipping straps, the packaging crate and the foam spacers around the unit. Then remove
the shipping screws that secure the unit to the shipping skid from the bottom of the unit.
WARNING!
Heavy object – risk of personal injury and damage to equipment!
Prevention: While the unit is still attached to the shipping skid, raise the humidifier using a
forklift or crane. Protect the unit from damage by tethers and other lifting equipment, and do not
drop the humidifier.
8. Carefully raise the humidifier into position and align the mounting brackets on the back of the humidifier with the installed mounting bars, as shown. Lower the humidifier onto the mounting bars, and
make sure that the unit is seated properly and level.
9. Secure the humidifier to the mounting surface at attachment point(s) "B" with 1/4-20 UNC bolt(s)
(supplied by others). Tighten the bolt(s).
10. Seal the opening in the wall around the steam line.
11. If the unit was attached to the skid and was raised using a forklift or crane, remove the shipping
screws and the shipping skid from the bottom of the unit.
Table 7: Holes Spacing
Housing Size
Dimension
in (mm)
X1
X2*
X3*
X4*
X5
X6
X7
X8
Y1**
Y2
Y3*
Y4
Y5
Small
2.20
(56)
6.00
(152)
2.00
(51)
–
10.21
(259)
–
6.38
(162)
–
15.00
(381)
15.13
(384)
16.00
(406)
0.95
(24)
36.75
(933)
Medium
2.67
(68)
6.00
(152)
2.00
(51)
–
12.67
(322)
–
8.54
(217)
–
15.00
(381)
15.88
(403)
16.00
(406)
4.50
(114)
52.32
(1329)
Large
6.22
(158)
6.00
(152)
2.00
(51)
4.00
(102)
10.07
(256)
24.30
(617)
9.06
(230)
14.30
(363)
15.00
(381)
15.79
(401)
16.00
(406)
9.00
(229)
52.3
(1329)
* Typical
** Minimum clearance
32
Installation
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
X7
X8
X7
X7
A
A
A
A
Y3
A
A
Y5
Y3
Y5
X2
Y2
Y5
Y3
A
X3
Y4
A
X2
X3
X3
X4
A
B
B
Y2
B
Y4
Y4
Y1
X2
A
X1
X1
X5
A
Y3
A
Y2
B
Y1
A
Y3
A
A
A
Y1
X5
X1
X5
X6
View -D-
7
11
1
3 4
C
2
A
2
A
3
D
A
B
Y1
4
6
5
Figure 12: Exterior Wall Mounting
1
2
3
4
5
6
7
8
Mounting bracket, attached to the humidifier rear panel (×2 for small unit, ×3 for medium and large unit)
Mounting bar, supplied (×2 for small unit, ×3 for medium and large unit)
Flat washer, 1/4 in diameter (supplied by others)
9 Outline of unit's rear panel – medium size unit, reference
Bolt, 1/4-20 UNC (supplied by others)
10 Outline of unit's rear panel – large size unit, reference
Shipping skid
11 Reinforcement for mounting surface (supplied by others)
Screw (used for shipping)
Mounting surface, external wall
Outline of unit's rear panel – small size unit, reference
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
33
5.4.6
Mounting Checklist
After mounting the humidifier, check the following:
Unit mounted in an outdoor environment where it is not exposed to severe weather, or where the
temperature drops below -40 °F (-40 °C), or where strong winds may cause the unit to fall. External
bracing (supplied by others) will be required for units exposed to strong winds.
Adequate clearances maintained (according to "Location and Suggested Clearances" on page 26, and all
local and national installation codes)?
Mounting surface stable and reinforced to support the full operating weight of the humidifier?
Unit level?
Unit fastened securely?
5.5
Steam Line Connections
5.5.1
Steam Line
The steam outlet is located on the rear of the Nortec EL/RS Outdoor humidifier – refer to Figure 2 on
page 12. Steam hose(s) and clamps (not supplied) permit connection to the steam line into the building.
Refer to the Nortec EL/Nortec RS manuals for steam and condensate line routing and connection details, as well as sizing and materials. The number of bends and the length of the line must be kept to a
minimum so that the total system backpressure (backpressure in the line plus duct static pressure) does
not exceed 5.5 in H2O (1.37 kPa).
The steam lines can be routed to an air handling unit or through a pipe chase in the roof or exterior wall
into the building.
The steam lines must maintain a constant minimum upslope of 10° or downslope of 2°, and must be
insulated. If the steam line runs upward, a condensate trap must be installed at the location where the
steam exits the unit – refer to Figure 13. The condensate line and trap MUST be trace heated to prevent
freezing.
All steam lines MUST be insulated to minimize condensation and maximize efficiency.
10o
o
2
1
Figure 13: Condensate Drain at Steam Exit
1
34
Installation
Condensate trap (on steam line running upward)
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
5.5.2
Steam Connections Checklist
Check the following to ensure that the steam and condensate connections for the outdoor humidifier
have been installed properly.
Steam Line
Total system backpressure does not exceed 5.5 in H2O (1.37 kPa)?
Steam line maintain constant minimum upslope of 10° or downslope of 2°? If steam line runs upward,
is a condensate trap installed at the location where the steam exits the unit? Condensate line and
trap trace heated?
Steam line sized correctly, and does not exceed maximums specified in the Nortec EL/Nortec RS manuals?
Minimum bend radius of 12 in (300 mm) for steam hose, or 5× internal diameter for rigid pipes
maintained?
Steam line does not reduce in diameter except at the steam distributor? Condensate line installed
just before the restriction?
Steam lines do not merge except at the steam distributor through a Condair adaptor?
Steam line does not sag or kink? Supported adequately? Condensate trap installed at all low points
in line?
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?
Steam line properly insulated?
Steam line purged?
Condensate Lines
Drain water temperature meet local code requirements?
Condensate line from the steam distributor condensate port connected to the humidifier fill cup port,
or the drain?
Condensate lines installed at all low points, and at horizontal -to-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 15 ft (4.5 m)?
Condensate lines free of kinks?
Condensate lines purged?
Condensate traps primed with water?
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
35
5.6
Water Connections
Refer to "Installation Overview" on page 18 for the overall routing of water and drain lines for each mounting
arrangement. Also refer to "Site Requirements" on page 24 and the Nortec EL/Nortec RS manuals for the
water supply and drain requirements.
5.6.1
Water and Drain Lines
Connect the water supply and drain lines as described below. Refer to Figure 14.
19
17 18
6
Building
Exterior
Building
interior
16
1
10
2
3
4
9
15
5
14
2
6
11
13
8
7
12
Figure 14: Water Supply and Drain Connections (medium size Nortec EL-OC unit shown)
Note: Trace heating and insulation should extend to the cabinet.
Legend:
1
2
3
4
5
6
7
8
9
10
36
Installation
Mechanical freeze protection valve
Flexible bent hose and clamp, 1-3/16 in (30 mm) I.D. (supplied)
Drain cup (Nortec EL-OC)
Drain cup (Nortec RS-OC)
Drain line, 1-3/16 in (30 mm) I.D. (supplied by others)
Bottom panel
Knockout (spare)
Drain line, 3/8 in (9.5 mm) I.D. (mechanical freeze protection valve)
Mechanical freeze protection valve (Nortec RS-OC with
scale tank only)
Trace heating and insulation (supplied by others)
11
12
13
14
15
16
17
18
19
Air gap funnel (supplied by others)
Filter, 5 μm (optional, but recommended)
Shutoff valve (supplied by others)
Union fitting (supplied by others)
3-way normally-closed valve, or normally-open and normallyclosed valves (supplied by others)
Trace heating and insulation (supplied by others), extend over
valve and fittings, to the cabinet.
Water supply line, minimum 1/2 in (13 mm) (supplied by others)
Adaptor, 3/4 BSPP to 1/2 in NPT (supplied)
Inlet, fill valve (3/4 in BSPP plastic threads)
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
Water Supply Line
–– The water supply must be installed to local plumbing codes.
–– In cold climates make sure that an external freeze protection system (utilizing either a normally-open and
a normally-closed valve, or a 3-way normally-closed valve – supplied by others) is installed inside the
building to protect the water supply line from freezing. Refer to "External Freeze Protection System" on page 38.
IMPORTANT! The warranty does not cover damage to the humidifier resulting from freezing.
–– For ease of maintenance, make sure that a water shutoff valve and union fitting are installed in the supply
line (inside the building), as close as possible to the humidifier.
–– The water filter (optional, but recommended) must be installed on the inside of the building as close as
possible to the humidifier.
–– The water supply line should be minimum 1/2 in (13 mm) in diameter, and have a 1/2 in NPT female end.
–– Route the water supply line through a pipe chase to the unit (recommended). In cold climates, install trace
heating and insulation to prevent the line from freezing.
CAUTION!
Risk of damage to the plastic threads of the fill valve!
Prevention: Hand-tighten the NPT adaptor to the fill valve.
–– Install the NPT adaptor and O-ring (supplied) on the fill valve and hand-tighten. Connect the water supply
line to the adaptor.
Drain Lines
–– It is recommended the air gap funnel is located inside the building, and connected to a dedicated
building drain (recommended) with a drainage capacity of at least 2.3 gpm (8.7 L/min) for an
Nortec EL-OC unit and 6.7 gpm (30 L/min) for a Nortec RS-OC unit – per steam cylinder. The drain
line exiting the funnel should be minimum 7/8 in (22 mm) in diameter for an Nortec EL-OC unit, and
minimum 1-3/4 in (45 mm) for a Nortec RS-OC unit. In large units, separate air gap funnels must be
used for drain lines from each cylinder.
–– All drain lines described below should be as short as possible, and routed through a pipe chase
(recommended). Drain lines must have a constant minimum downslope of 1 in/48 in (1.2°) and empty
into the funnel without touching its sides or bottom.
–– Route a drain line (supplied by others) with an inside diameter of 1-3/16 in (30 mm) through the
large hole in the bottom panel and connect it to the flexible bent hose (supplied) exiting the humidifier – refer to Figure 14 on page 36. Secure the line with clamps (supplied). Route the other end of
the drain line to the air gap funnel.
–– Route the 3/8 in (9.5 mm) I.D. drain hose from the mechanical freeze protection valve (and scale tank
in Nortec RS-OC units) through the small hole in the bottom panel to the air gap funnel, as shown.
–– In cold climates, install trace heating and insulation to prevent the drain lines from freezing.
–– All drain lines must be installed to local plumbing codes.
Upon completion of the water and drain connections, perform the following:
–– To ensure that the IP55 rating of the unit is maintained, seal all gaps around the drain lines where
they pass through the bottom panel in the unit.
IMPORTANT! Seal all pipe chases to prevent any rising steam from entering the bottom of the
unit, and to isolate the unit from the pressure inside the building.
–– Disconnect and flush the water supply and drain lines to clear out any debris in the lines. Check the
strainer in the fill valve to ensure it is clear of all debris (refer to the Nortec EL/Nortec RS manuals
for details). Reconnect the lines.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
37
5.6.2
External Freeze Protection System
In cold climates, the external freeze protection system (supplied by others) is an important part of the
protection for the Nortec EL/RS Outdoor humidifier against freezing. The external freeze protection
system must be installed correctly and fully functional at all times.
IMPORTANT! The warranty does not cover damage to the humidifier resulting from freezing.
5.6.2.1
Normally-Open and Normally-Closed Valves
This arrangement consists of a normally-open and a normally-closed valve installed inside the building
to protect the water supply line from freezing. Refer to Figure 15.
The water supply flows to the fill valve through the normally-closed valve and a tee. This valve remains
closed unless it is energized by the humidifier. This stops the water flow into the humidifier when there
is no demand, or in the event of a power failure.
At the same time, a normally-open valve which is also connected to the tee remains open unless it is
energized by the humidifier. This allows any water in the line (from the tee to the fill valve) to drain as
long as there is no demand on the humidifier, or in the event of a power failure.
The electrical connections are shown in Figure 15.
When there is a demand for humidity, the normally-closed valve opens, and the normally-open valve
closes to permit water flow to the fill valve.
GND
6
LV / XE2
1 2 3 4 5 6 7 8 9
24 VAC
Building Interior
Humidifier
In the event the temperature of the water in the (trace heated) line drops below 35 °F (2 °C), the bi-metal
strip (supplied by others) interrupts the circuit, and the water supply to the unit is shut off. Any water in
the line is then allowed to drain.
1
NC
3
2
Water supply
To Fill Valve
NO
120 VAC
To drain
5
L N
4
Figure 15: Normally-Open and Normally-Closed Valve Arrangement
1
2
3
4
5
6
38
Installation
Low voltage terminal strip in the humidifier (LV / XE2)
Trace heating (supplied by others), minimum 37-41 °F (3-5 °C)
Bi-metal strip (supplied by others) set to 35 °F (2 °C) and installed around the trace heated pipe
120 VAC exterior power supply, trace heating (supplied by others)
24 V normally-open valve (supplied by others)
24 V normally-closed valve (supplied by others)
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
5.6.2.2
3-Way Normally-Closed Valve
This arrangement consists of a normally-closed 3-way valve (instead of the "Normally-Open and NormallyClosed Valves" on page 38) installed inside the building to protect the water supply line from freezing.
Refer to Figure 16.
The water supply flows to the fill valve when the 3-way valve is energized by the humidifier. When there
is no demand, or in the event of a power failure, the valve is de-energized and the water in the line is
allowed to drain.
The electrical connections are shown in Figure 16.
LV / XE2
GND
1 2 3 4 5 6 7 8 9
24 VAC
Building Interior
Humidifier
In the event the temperature of the water in the (trace heated) line drops below 35 °F (2 °C), the bi-metal
strip (supplied by others) interrupts the circuit and the water supply to the unit is shut off. Any water in
the line is then allowed to drain.
1
3
2
NC
To Fill Valve
Water supply
120 VAC
5
L N
To drain
4
Figure 16: 3-Way Normally-Closed Valve Arrangement
1
2
3
4
5
Low voltage terminal strip in the humidifier (LV / XE2)
Trace heating (supplied by others), minimum 37-41 °F (3-5 °C)
Bi-metal strip (supplied by others) set to 35 °F (2 °C) and installed around the trace heated pipe
120 VAC exterior power supply, trace heating (supplied by others)
24 V normally-closed 3-way valve (supplied by others)
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
39
5.6.3
Water Connections Checklist
Check the following to ensure that the water connections for the outdoor humidifier have been installed properly.
Water and drain lines installed to local plumbing codes?
Shutoff valve and union fitting installed in supply line?
Water supply piping minimum 1/2 in (13 mm) diameter, and routed through a pipe chase (recommended)
to the unit?
Optional 5 μm water filter installed in the water supply line (inside the building) close to the humidifier?
Water supply surge-free and pressure regulated to 30-80 psig (207-550 kPa)?
Water temperature 34-104°F (1-40°C) for Nortec EL-OC unit, and 140°F (60°C) for Nortec RS-OC unit?
Cold potable drinking water only (not RO or DI) for Nortec EL-OC unit?
For Nortec EL-OC unit, is conductivity of the water 150-1200 micro-seimens/cm, hardness 0-12 gpg (when
Silica is between 0-4 ppm), or 0-3 gpg (when Silica is between 4-14 ppm), and pH 7-7.5?
For Nortec RS-OC unit, is conductivity of the water 1-1500 micro-seimens/cm, hardness 0-12 gpg, Silica
0-12 ppm, pH 6.5-7.5 pH, and chloride 0-50 ppm?
If the unit is installed in a cold climate, are the freeze protection valves (normally-open and a normallyclosed valve, or a 3-way normally-closed valve) installed inside building?
All drain lines routed through the bottom panel in the unit to the air gap funnel?
All gaps around the drain lines sealed where they pass through the bottom panel in the unit?
Drain lines have a constant minimum downslope of 1 in/48 in (1.2°) to funnel without touching its sides
or bottom?
Drain lines from large humidifiers empty into separate air gap funnels before connecting to the building
drain?
Air gap funnel(s) connected to a dedicated building drain (recommended) with a drainage capacity of at
least 2.3 gpm (8.7 L/min) for an Nortec EL-OC unit and 6.7 gpm (30 L/min) for a Nortec RS-OC unit – per
steam cylinder?
Drain line exiting the funnel minimum 7/8 in (22 mm) in diameter for an Nortec EL-OC unit, and minimum
1-3/4 in (45 mm) for a Nortec RS-OC unit?
If the unit is installed in a cold climate, are the water supply and drain lines trace heated and insulated?
All pipe chases sealed to isolate the unit from pressure inside the building?
Any leaks?
Supply and drain lines flushed to remove all debris? Strainer in the fill valve clear of all debris?
5.7
Electrical Connections
DANGER!
Risk of electric shock!
The Nortec EL/RS Outdoor humidifier is mains powered. Live parts may be exposed when
the doors are open. Touching live parts may cause severe injury or even death.
Prevention: All electrical work must only be performed by a licensed electrician. The humidifier
must be connected to the mains only after all installation work has been completed, checked for
correct workmanship, and the doors are closed and fastened securely.
CAUTION!
Electrostatic discharge (ESD)!
The electronic components inside the humidifier 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.
40
Installation
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
–– All wiring must be performed by a licensed electrician in accordance with national and local codes.
–– Make sure that power supply voltage and current ratings match the requirements shown on the specification label (refer to Figure 2 on page 12).
–– All electrical cables MUST enter the side or bottom of the unit through minimum IP55-rated cable glands
(supplied by others) to ensure that the IP55 rating for the unit is maintained. Knockouts are available on
the side and bottom of the unit for routing the cables into the unit – refer to Figure 17 on page 41.
Note: Knockouts for the small unit are located on the left side of the unit.
–– A NEMA Type 3R (or greater) weatherproof fused disconnect switch (supplied by others) must be installed
external to the unit to permit power interruption for service/maintenance. The fusing must not exceed the
maximum circuit protection indicated on the specification label.
IMPORTANT! In order to maintain the IP55 rating of the unit, DO NOT mount the disconnect
switch, or any other component, directly on the outdoor enclosure of the unit. Such installations
may permit entry of moisture into the unit and cause heat loss, and will void the warranty.
–– The power cable must be connected to the terminal block (X0). Refer to Figure 17 on page 41 and "Outdoor
Enclosure Wiring Diagram" on page 42.
–– Connect the external freeze protection valves (supplied by others) to the humidifier's safety circuit as
described in "External Freeze Protection System" on page 38.
–– For all other electrical connection details (including low voltage control wiring) refer to the Nortec EL/Nortec RS
manuals.
1
2
ON
OFF
3
Figure 17: Nortec EL/RS Outdoor Humidifier Power Connection
1
2
3
Terminal block (X0)
External disconnect switch (NEMA Type 3R or greater)
Knockout for routing power cable
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Installation
41
5.7.1
Outdoor Enclosure Wiring Diagram
X0
L3 L2 L1
2nd Heater for Large Units
3
L
5
N
7
Thermostat
Heater
Bk
3
L3 L2 L1
Thermostat
W
Heater
Bk
PRI
Transformer
Bk
Bk
F
W
Fan
W
Bk
Bk
Thermostat
SEC
120V
W
Bk
s s
(2x) Fuse
N
7
W
To Steam Cylinder
K1
L
5
L1 N
Bk
W
Outdoor Cabinet (OC) Wiring
Figure 18: Outdoor Cabinet Wiring Diagram - Nortec EL/RS Outdoor Humidifier
5.7.2
Electrical Connections Checklist
Check the following to ensure that the electrical connections for the humidifier have been installed properly:
Power supply meet the voltage and current requirements shown on the specification label (Figure 2 on page 12)?
All electrical cables enter the bottom of the unit through minimum IP55-rated cable glands?
Power supply have a NEMA Type 3R (or greater) weatherproof fused disconnect switch? Fusing
rated for maximum circuit protection indicated on the specification label? Disconnect switch installed
external to the unit, and NOT directly attached to unit?
All wiring done according to the wiring diagrams and instructions in this manual?
Electrical installation meet the applicable national and local codes?
42
Installation
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
6
Commissioning
6.1
General
The Nortec EL/RS Outdoor humidifier must be commissioned and operated only by personnel who are
well qualified and properly trained to commission the Condair humidifier. It is the customer's responsibility
to verify the qualifications of personnel.
6.2
Commissioning
The unit must always be commissioned for the first time by a service technician from your Condair representative, or by personnel who are well trained and authorized by the customer. For the consolidated
installation checklist, refer to the "Installation Checklist" on page 67.
The steps are in the following order:
1. Inspect the mounting of the outdoor steam humidifier.
2. Inspect the steam and condensate line connections.
3. Inspect the water and drain connections.
4. Inspect the electrical connections.
5. Inspect the external freeze protection system.
6. Flush the water supply and drain lines.
7. Make sure that the steam cylinder is seated properly in its base.
8. Configure the controls and the Nortec EL/RS Outdoor humidifier.
9. Wire the unit to a remote monitoring system, and verify that it is functional.
10. Conduct performance tests, including control and monitoring devices.
11. Fill out the commissioning protocol documents.
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Commissioning
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Nortec EL/RS Outdoor
7
Operation and Maintenance
7.1
Operating the Unit
The Nortec EL/RS Outdoor humidifier is operated in the same manner as its indoor counterpart. Refer
to respective Nortec EL/Nortec RS operation and maintenance manual for details.
7.2
Inspections During Operation
Regularly inspect the following when the unit is in operation:
Inspect the water, drain and steam connections for any leaks.
Make sure that the drain lines are not blocked or kinked, and empty into the air gap funnel (recommended inside the building).
Check the unit and other system components have not shifted from their mountings, and are fastened securely.
Visually check for any damage to the electrical wiring.
Visually check the heating wires and insulation around the water and drain lines for damage.
Inspect the heater and fan for buildup of dirt and pollen, and make sure that the air intake and exhaust shrouds are free of all blockages.
Check the Home screen on the unit for maintenance or alarm messages. Note: The remote fault
board can also be used to remotely monitor the unit for maintenance or alarm messages.
Check that the doors on the unit are closed and fastened securely.
In units operating in cold climates, inspect the external freeze protection system and make sure that
it is fully functional at all times. Refer to "Freeze Protection System" on page 46.
In units operating in cold climates, keep the area around the unit clear of snow and ice accumulation
to permit opening and closing of the front and side doors.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Operation and Maintenance
45
7.3
Maintenance
7.3.1
General
To ensure proper performance and long operating life of the Nortec EL/RS Outdoor humidifier, Condair
recommends inspection of the appliance and installation at least once a year by a qualified service person.
DANGER!
Risk of electric shock!
The Nortec EL/RS Outdoor humidifier is mains powered. Live parts may be exposed when
the door panels are opened. Touching live parts may cause severe injury or even death.
Prevention:
Shut down the Nortec EL/RS Outdoor humidifier properly and disconnect power to the unit before
performing any maintenance work on the unit – refer to the respective Nortec EL/Nortec RS operation and maintenance manual for proper shutdown procedure.
Only qualified personnel should perform maintenance or repairs on the unit.
DO NOT service the unit while standing on wet or icy surfaces, or in wet weather.
Observe all other safety precautions described in "For Your Safety" on page 7, as well as the respective
Nortec EL/Nortec RS operation and maintenance manual.
During cold weather, all maintenance on the unit must be performed in a heated service tent.
The maintenance items discussed in this section are in addition to those listed in the Nortec EL/Nortec RS
operation and maintenance manual. Refer to the respective Nortec EL/Nortec RS operation and maintenance manual for other maintenance requirements.
IMPORTANT! Damage caused by use of non-approved parts is not covered by warranty. Use only
original Condair replacement parts.
7.3.2
Heater and Fan
Use a vacuum cleaner or compressed air to remove all dirt and pollen from the heater and fan. Make
sure that the fan spins freely.
Clean/replace the filter in the exhaust fan. Refer to "Spare Parts List" on page 49.
Clean/replace the filter in the intake shroud.
Make sure that the air intake and exhaust shrouds are not clogged with animals, nesting materials
or other foreign matter.
7.3.3
Freeze Protection System
IMPORTANT! In cold climates the external freeze protection system (refer to "External Freeze
Protection System" on page 35) must be properly maintained and fully functional at all times. All water
supply and drain lines must be trace heated and properly insulated. The warranty does not cover
damage to the humidifier due to freezing.
Make sure that the drain hose connected to the mechanical freeze protection valve inside the unit
is not blocked or kinked.
Make sure that the external freeze protection valves (normally-open and normally-closed valves,
or 3-way normally-closed valve inside the building), if installed, are properly maintained and fully
functional at all times.
46
Operation and Maintenance
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
Make sure the bi-metal strip around the water supply line is securely in place and working properly.
Inspect the water supply line and all drain lines to make sure the insulation around the piping is
undamaged. Make sure the trace heating is working.
Inspect all external freeze protection system wiring for damage or loose connections.
7.3.4
Steam Cylinder
Replace the steam cylinder on the Nortec EL-OC unit, and service the steam cylinder on the
Nortec RS-OC unit when the service reminder appears on the touchscreen display. Refer to the
respective Nortec EL/Nortec RS operation and maintenance manual for replacement procedure.
7.3.5
Cleaning
In addition to cleaning the heater, fans and shrouds, use a vacuum cleaner or compressed air to remove
all dust and pollen from inside the control cabinet and plumbing cabinet in the unit.
Note: Static discharge from a vacuum cleaner may cause damage to electronics. Handle with care.
7.3.6
Scale Management (Nortec RS-OC Units only)
Depending on the water supply quality, empty the scale collection tank(s) in the Nortec RS-OC unit
periodically – at the very minimum, twice every year/season.
Every third time the scale collection tank is cleaned, disassemble and clean the steam cylinder and
heating elements. Refer to the Nortec RS operation and maintenance manual.
Note: The procedure for removing the steam cylinder is the same as on the indoor units, except for
the following – use the full drain valve (optional) or manual drain hose (connected to the drain
valve of the scale tank) and drain the tank. Then disconnect the freeze protection drain hose connection (refer to Figure 19) and remove the tank. The steam cylinder can now be removed for cleaning.
IMPORTANT! Make sure that the freeze protection drain hose is reconnected after installing the
scale collection tank, and the spigot on the tank is in the Open position.
2
1
Figure 19: Drain Hose Connection – Nortec RS-OC with Scale Tank
1
2
Freeze protection drain hose
Freeze protection valve
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Operation and Maintenance
47
7.3.7
Restarting After a Freeze-up
In the event of a freeze-up, inspect then restart the unit as follows:
1. Inspect all hoses, fittings, valves and seals for cracks or damage. Contact your Condair representative to order replacement parts. Check all connections after replacing damaged parts.
2. Make sure that the external freeze protection system (refer to "External Freeze Protection System" on
page 35) is properly installed and fully functional.
3. Inspect the water supply line and all drain lines and make sure that the trace heating is working and
the insulation around the piping is undamaged.
4. Make sure the bi-metal strip around the water supply line is securely in place and working properly.
5. Inspect all external freeze protection system wiring.
6. Make sure that the condensate lines and traps are not ruptured. Prime the condensate traps.
7. Power up the humidifier. The heater will automatically turn on and begin to warm up the humidifier
enclosure. Once the temperature inside the enclosure has risen to the appropriate level, the unit will
automatically resume normal operation.
48
Operation and Maintenance
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
8
Spare Parts List
The spare parts for the Nortec EL/RS Outdoor humidifier is listed in this section. Refer to Figure 20 on
page 50.
For all other spare parts refer to the respective Nortec EL/Nortec RS Spare Parts List.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Spare Parts List
49
Nortec EL/RS Outdoor Humidifier
155
160
165
170
150
125
145
140
105
110
115
135
130
100
120
125
Figure 20: Nortec EL/RS Outdoor Humidifier
50
Spare Parts List
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
Parts List – Nortec EL/RS Outdoor Humidifier
Item
Item Description
No.
Details
100
SP, EL RS OC, Door, Cabinet, Controls
Kits consist of:
Door assembly, insulation, latches, hinges and mounting
hardware
SP, EL RS OC, Door, Cabinet, Controls
105
SP, EL RS OC, Thermostat
(refer to Figure 22 on page 54 for details)
Kit consists of:
Thermostat, STC-100 (qty. 1)
Screw (qty. 2)
SP, EL RS OC, Block, Fuse
(refer to Figure 22 on page 54 for details)
Kit consists of:
Block, fuse, 2-pole HCTR (qty. 1)
Screw (qty. 2)
SP, EL RS OC, Fuse (only), 2.5 A
(refer to Figure 22 on page 54 for details)
Kit consists of:
Fuse (qty. 2)
SP, EL RS OC, Fuse (only), 3.2 A
110
115
120
125
130
135
140
Quantity
Nortec Part
Number
Small
1
2585120
Medium/Large
1
2585121
All
1
2585107
All
1
2585114
See Table 8 on page 53
1
2590290
See Table 8 on page 53
1
2590291
SP, EL RS OC, Fuse (only), 3.5 A
See Table 8 on page 53
1
2590292
SP, EL RS OC, Fuse (only), 4 A
See Table 8 on page 53
1
2590293
SP, EL RS OC, Fuse (only), 5 A
See Table 8 on page 53
1
2590294
SP, EL RS OC, Fuse (only), 6 A
See Table 8 on page 53
1
2590295
SP, EL RS OC, Fuse (only), 7.5 A
See Table 8 on page 53
1
2590296
SP, EL RS OC, Fuse (only), 8 A
See Table 8 on page 53
1
2590297
SP, EL RS OC, Filter, Intake
(refer to Figure 22 on page 54 for details)
Kit consists of:
Filter, 172 mm (qty. 1)
Screw (qty. 8)
Washer, Lock (qty. 8)
SP, EL RS OC, Filter (media only) (qty. 5)
(refer to Figure 22 on page 54 for details)
SP, EL RS OC, Transformer, 240 V-120 V, 500 VA
(refer to Figure 22 on page 54 for details)
Kits consist of:
Transformer, enclosed (qty. 1)
Screw (qty. 4)
Grommet (qty. 2)
SP, EL RS OC, Transformer, 240 V-120 V, 1000 VA
All
1
2585103
All
1
2585104
Small/Medium
1
2586081
Large
1
2586082
SP, EL RS OC, Transformer, 600/480 V-120 V, 500 VA
Small/Medium
1
2586083
SP, EL RS OC, Transformer, 600/480 V-120 V, 1000 VA
Large
1
2586084
SP, EL RS OC, Transformer, 380 V-120 V, 500 VA
Small/Medium
1
2586472
SP, EL RS OC, Transformer, 380 V-120 V, 1000 VA
Large
1
2586473
SP, EL RS OC, Transformer, 208 V-120 V, 500 VA
Small/Medium
1
2586474
SP, EL RS OC, Transformer, 208 V-120 V, 1000 VA
Large
1
2586475
SP, EL RS OC, Transformer, 277 V-120 V, 500 VA
Small/Medium
1
2586476
SP, EL RS OC, Heater
(refer to Figure 22 on page 54 for details)
Kit consists of:
Heater, 500 W (qty. 1)
Screw (qty. 2)
SP, EL RS OC, Door, Cabinet, Plumbing (qty. 1)
Kits consist of:
Door assembly, insulation, latches, hinges and mounting
hardware
SP, EL RS OC, Door, Cabinet, Plumbing (qty. 1)
All
1
2585105
Small
1
2585117
Medium
1
2585118
Large
1
2585119
SP, EL RS OC, Door, Cabinet, Plumbing (qty. 2)
Note: Refer to Table 1 on page 14 for details of the humidifier sizes.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Spare Parts List
51
Nortec EL/RS Outdoor Humidifier
155
160
165
170
150
125
145
140
105
110
115
135
130
100
120
125
Figure 21: Figure 20: Nortec EL/RS Outdoor Humidifier, continued...
52
Spare Parts List
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
Parts List (continued...) – Nortec EL/RS Outdoor Humidifier
Item
Item Description
No.
Details
145
SP, EL RS OC, Freeze Protection
(refer to Figure 22 on page 54 for details)
Kit consists of:
Valve, freeze protection, FP-45 (qty. 1)
Adaptor, hose barb, 1/2 NPTF × 1/2 in (qty. 1)
Hose, 7/6 in (11.5 mm) I.D. × 26 in (670 mm)
Clamp, spring (qty. 2)
(mounting hardware included)
SP, EL RS OC, Fan, Exhaust
(refer to Figure 23 on page 55 for details)
Kit consists of:
Fan, 180 CFM (5 m3/min), 120 V (qty. 1)
Filter, 172 mm (qty. 1)
Screw (qty. 8)
Washer, Lock (qty. 8)
SP, EL OC, Gasket, Steam Outlet, 7/8 in (22 mm)
(refer to Figure 23 on page 55 for details)
Kits consist of:
Gasket (qty. 2)
SP, EL RS OC, Gasket, Steam Outlet, 1-3/4 in (45 mm)
All
150
155
160
165
170
Quantity
Nortec Part
Number
1
2585106
1
2585102
Small
1
2585122
Medium/Large
1
2585123
SP, RS OC, Fill Cup
(refer to Figure 23 on page 55 for details)
Kits consist of:
Assembly, fill cup (qty. 1) – includes fill cup, hoses, gaskets, fitting,
spring clamps
SP, EL OC, Fill Cup
(refer to Figure 23 on page 55 for details)
SP, EL OC, Fill Cup
Medium/Large
1
2585108
Small
1
2585109
Medium/Large
1
2585110
SP, EL RS OC, Gasket, Door
Kit consists of:
Seal, rubber, trim, push-on-edge, bulk (qty. 8 ft (2.4 m))
Seal, rubber, trim, push-on-edge, bulk (qty. 7 ft (2.1 m))
SP, EL RS OC, Gasket, Door
Kit consists of:
Seal, rubber, trim, push-on-edge, bulk (qty. 11 ft (3.4 m))
Seal, rubber, trim, push-on-edge, bulk (qty. 7.75 ft (2.4 m))
SP, EL RS OC, Gasket, Door
Kit consists of:
Seal, rubber, trim, push-on-edge, bulk (qty. 11.5 ft (3.5 m))
Seal, rubber, trim, push-on-edge, bulk (qty. 11 ft (3.4 m))
Seal, rubber, trim, push-on-edge, bulk (qty. 7.75 ft (2.4 m))
SP, EL OC, Bracket, Mounting (mounting hardware not included)
Small
1
2585111
Medium
1
2585112
Large
1
2585113
Small
1
2585124
SP, EL RS OC, Bracket, Mounting (mounting hardware not included)
Medium
1
2585125
SP, EL RS OC, Bracket, Mounting (mounting hardware not included)
Large
1
2585126
Note: Refer to Table 1 on page 14 for details of the humidifier sizes.
Table 8: Item number 115, SP, EL RS OC, Fuse (only)
Fuse part #'s
2 fuses required per unit
Supply voltage
208 Vac
240 Vac
277 Vac
380 Vac
480 Vac
600 Vac
Small/Medium units
(0.5 kVA transformer)
2590293
(4 A)
2590292
(3.5 A)
2590295
(6 A)
2590293
(4 A)
2590291
(3.2 A)
2590290
(2.5 A)
Large units
(1.0 kVA transformer)
2590297
(8 A)
2590296
(7.5 A)
2590295
(6 A)
2590294
(5 A)
2590292
(3.5 A)
2590294
(5 A)
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Spare Parts List
53
Nortec EL/RS Outdoor Humidifier
120
110
115
105
125
130
135
145
Figure 22: Nortec EL/RS Outdoor Humidifier – Kit Details
Note: Greyed out items are not a part of the kits.
54
Spare Parts List
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
Nortec EL/RS Outdoor Humidifier
150
155
160
(EL-OC)
160
(RS-OC)
Figure 23: Nortec EL/RS Outdoor Humidifier – Kit Details, continued...
Note: Greyed out items are not a part of the kits.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Spare Parts List
55
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56

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Nortec EL/RS Outdoor
9
Decommissioning
9.1
General
If the Nortec EL/RS Outdoor humidifier needs to be removed from service (for disposal or long-term
storage), strictly follow all instructions in this chapter.
Personnel Qualifications
Decommissioning of the Nortec EL/RS Outdoor humidifier must only be performed by a qualified service
technician authorized by the customer. It is the customer's responsibility to verify qualifications of the
personnel.
Safety
Decommissioning of the Nortec EL/RS Outdoor humidifier will require personnel to access the inside
of the control and plumbing cabinets in the humidifier, which may expose personnel and equipment to
safety hazards.
Observe all other safety precautions described in "For Your Safety" on page 7, as well as the respective
Nortec EL/Nortec RS operation and maintenance manual.
9.2
Removal from Service for Disposal or Long-term Storage
Remove the Nortec EL/RS Outdoor humidifier from service (for disposal or long-term storage) as follows:
1. Drain the steam cylinder (and the scale tank on the Nortec RS-OC unit), and shut down the humidifier – refer to the respective Nortec EL/Nortec RS operation and maintenance manual. Follow all
safety precautions.
2. Disconnect and remove the power supply to the Nortec EL/RS Outdoor humidifier. Refer to "Outdoor
Enclosure Wiring Diagram" on page 40, and the wiring diagrams in the Nortec EL/Nortec RS manuals.
3. Disconnect and remove the control signal inputs from the humidifier.
4. Disconnect the steam and condensate lines, and empty out all fluids.
5. Disconnect the water and drain connections to the humidifier.
WARNING!
Heavy object – risk of personal injury and damage to equipment!
Prevention: Use a forklift or crane to lift the humidifier, and protect the unit from damage by
tethers and other lifting equipment.
6. Carefully remove the humidifier from its mounting surface.
7. Cap the pipe chases (if installed for the humidifier).
8. If the Nortec EL/RS Outdoor humidifier is to be put into long-term storage, store the humidifier in its
original packaging inside a protected area that meets the following requirements:
•
Room temperature: 41 to 104 °F (5 to 40 °C)
•
Room humidity: 10 to 75% RH
9. If the Nortec EL/RS Outdoor humidifier is to be disposed off, refer to "Disposal/Recycling" on page 58.
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Decommissioning
57
9.3
Disposal/Recycling
The Nortec EL/RS Outdoor humidifier should not be disposed off in domestic waste, and should only be
disposed off in accordance with local regulations at authorized collection facilities.
If you have any questions, contact the appropriate local authorities or your local Condair representative.
58
Decommissioning
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
10
Product Specifications
10.1
Performance Data
Refer to the respective Nortec EL/Nortec RS Operation and Maintenance manual for the performance data.
10.2
Operating Data
The following data pertains to the Nortec EL/RS Outdoor humidifier. Refer to the respective
Nortec EL/Nortec RS Operation and Maintenance manual for additional operating data.
Ambient Conditions
Ambient temperature
10.3
-40 °F to 104 °F (-40 °C to +40 °C)
Weights
Table 9: Nortec EL/RS Outdoor Humidifier Weights
Housing Size
Small
Medium
Large
*
Weight
lb (kg)
Nortec Model
Net
Operating
EL-OC 005-010
123 (56)
132 (60)
EL-OC 020
123 (56)
143 (65)
EL-OC 030
123 (56)
159 (72)
EL-OC 050-100
172 (78)
236 (107)
RS-OC 010-020
220 (100)
249 (113)
RS-OC 030-090
220 (100)
278 (126)
EL-OC 150/200*
256 (116)
381 (173)
RS-OC 090-180*
346 (157)
459 (208)
Units with two steam cylinders
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Product Specifications
59
10.4
Dimensions
All dimensions are in inches, and values in brackets are in millimeters. Drawings not to scale.
Exhaust
shroud
20.51
(521)
38.14
(969)
Water line
protection shield
3.70
(94)
3.70
(94)
8.04
(204)
27.46
(698)
35.31
(897)
39.86
(1012)
Water
inlet
3/4” BSPP
36.75
(933)
1.78
(45)
18.61
(473)
3.00
(76)
Air intake
shroud
28.69
(729)
Knockout (x4)
0.88” (22 mm) dia.
for routing power cables
A
16.16
(410)
6.37
(162)
Steam outlet
0.88” (22 mm) O.D.
0.88” (22 mm) dia.
for control cables
0.88” (22 mm) dia.
(spare)
1.65” (42 mm) dia.
for drain hose
16
(406)
16.20
(411)
4.34
(110)
4.30
(109)
4.71
(120)
11.15
(283)
3.00
(76)
0.88” (22 mm) dia.
for freeze protection hose
15.60
(396)
0.88” (22mm) dia.
for main power cable
Mounting
bracket (x2)
-A-
Figure 24: Nortec EL/RS Outdoor Steam Humidifier, Small Housing*
*
60
Nortec EL-OC 005-030
Product Specifications
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
25.43
(646)
55.11
(1400)
53.05
(1347)
Water
inlet
3/4” BSPP
Water line
protection shield
32.85
(834)
0.88” (22 mm) dia.
(spare)
Knockout
(spare) – see
note below
A
14.66
(372)
3.66
(93)
4.26
(108)
41.76
(1061)
52.34
50.20 (1329)
(1275)
1.74
(44)
20.76
(527)
2.71
(69)
Exhaust
shroud
Air intake
shroud
0.88” (22 mm) dia.
for control cables
Knockout (x2)
for routing
power cables
– see note below
18.22
(463)
8.59
(218)
Steam outlet
1.75” (45 mm) O.D.
1.65” (42 mm) dia.
for drain hose
20.08
(510)
16
(406)
5.01
(127)
8.5
(216)
16.95
(431)
5.11
(130)
5.15
(131)
12.68
(322)
2.00
(51)
16
(406)
0.88” (22 mm) dia.
for freeze protection hose
Knockout for main
power cable
– see note below
Mounting
bracket (x3)
-A-
Figure 25: Nortec EL/RS Outdoor Steam Humidifier, Medium Housing*
*
Nortec EL-OC 050-100 and Nortec RS-OC 010-090. For Nortec RS-OC 090 with two cylinders, refer to Figure 26 on page 62.
Note: The main power and auxiliary power cables enter the unit through multi-diameter knockouts with the following hole sizes: 7/8 in
(22 mm), 1-1/8 in (29 mm), 1-3/4 in (45 mm) and 2.5 in (64 mm).
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Product Specifications
61
Water
inlet (x2)
3/4” BSPP
2.50
(64)
Exhaust
shroud
4.26
(108)
41.76
(1061)
52.34
50.20 (1329)
(1275)
1.74
(44)
44.43
(1128)
55.07
(1399)
20.94
(532)
53.06
(1348)
2.40
(61)
52.03
(1322)
0.88” (22 mm) dia.
(spare - x2)
4.00
(102)
1.85
(47)
(x2)
39.08
(993)
12.20
25.08 (310)
(637)
5.10
(130)
Steam outlet (x2)
1.75” (45 mm) O.D.
Knockout (x2)
for routing
power cables
- see note below
5.18
(131)
5.35
(136)
0.88” (22 mm) dia.
(x2) for freeze protection hose
1.65” (42 mm) dia.
(x2) for drain hose
Air intake
shroud
Knockout (spare)
– see note below
0.88” (22 mm) dia.
for control cables
18.22
(463)
11.68
(297)
Water line
protection shield
14.66
(372)
3.66
(93)
A
14.30
(363)
9.07
(230)
17.02
(432)
16.00
(406)
16.00
(406)
Knockout for main power
cable – see note below
Mounting
bracket (x3)
-A-
Figure 26: Nortec EL/RS Outdoor Steam Humidifier, Large Housing*
*
Nortec EL-OC 150/200 and Nortec RS-OC 090-180 (units with two steam cylinders)
Note: The main power and auxiliary power cables enter the unit through multi-diameter knockouts with the following hole sizes: 7/8 in
(22 mm), 1-1/8 in (29 mm), 1-3/4 in (45 mm) and 2.5 in (64 mm).
62
Product Specifications
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
A
Appendix
A.1
Weather Data
The following weather design data is provided to assist in determining suitable locations for rooftop
mounting of the Nortec EL/RS Outdoor units. Locations that experience very cold winter conditions are
not good candidates for rooftop mounting of the Nortec EL/RS Outdoor units. Installing the humidifier
in areas where temperature drops below -40 °F (-40 °C) during January, or rises above 104 °F (40 °C)
during July (see Table A1 below) is not recommended. These harsh climates can make performing maintenance difficult, and increase the risk of the humidifier freezing or overheating.
To determine the prevailing wind speeds for the selected location, refer to http://windspeed.atcouncil.org/.
Table A1: Weather Data by Location (Source: ASHRAE, except as noted)
January
Temperature
Location
State/Province
City
January
Relative Humidity (% RH)
July
Temperature
July
Relative Humidity (% RH)
Dry Bulb
°F
Dry Bulb
°C
7:30
A.M.
1:30
P.M.
7:30
P.M.
Dry Bulb
°F
Dry Bulb
°C
7:30
A.M.
1:30
P.M.
7:30
P.M.
10
-12
81
61
66
95
35
84
56
68
78
Alabama
Birmingham
Mobile
10
-12
–
–
–
95
35
90
64
Arizona
Flagstaff
-10
-23
83
58
–
90
32
77
36
–
Phoenix
25
-4
75
47
39
105
41
53
31
23
Yuma
30
-1
56
37
27
110
44
51
31
23
Arkansas
Little Rock
5
-15
80
67
68
95
35
85
55
59
California
Eureka
30
-1
87
–
77
90
32
92
–
80
Colorado
Connecticut
Fresno
25
-4
93
80
66
105
41
61
36
20
Los Angeles
35
2
63
46
51
90
32
85
50
54
Sacramento
30
-1
90
82
70
100
38
76
46
28
San Diego
35
2
76
58
60
85
29
86
68
65
San Francisco
35
2
84
68
70
85
29
92
75
78
Denver
-10
-23
54
37
41
95
35
55
27
30
Grand Junction
-15
-26
77
64
64
95
35
48
27
22
Pueblo
-20
-29
67
44
48
95
35
73
34
35
0
-18
75
65
69
95
35
77
64
74
New haven
Deleware
Wilmington
0
-18
77
62
70
95
35
80
52
69
District of
Columbia
Washington
0
-18
73
56
64
95
35
78
52
64
Jacksonville
25
-4
89
56
75
95
35
85
57
76
Miami
35
2
87
59
75
91
33
83
64
76
Florida
Georgia
Atlanta
10
-12
80
64
69
95
35
83
57
68
Augusta
10
-12
84
59
69
98
37
83
55
69
Savannah
20
-7
83
58
72
95
35
85
61
80
Idaho
Boise
-10
-23
82
75
74
95
35
54
34
23
Lewiston
-5
-20
79
73
71
95
35
64
37
25
Illinois
Cairo
0
-18
81
69
–
98
37
83
57
–
-10
-23
81
70
75
95
35
78
51
55
Chicago
Indiana
Iowa
Nortec EL/RS Outdoor
Peoria
-10
-23
83
72
77
96
35
81
53
58
Fort Wayne
-10
-23
84
75
81
95
35
84
53
58
Indianapolis
-10
-23
83
72
78
95
35
84
54
60
Terre Haute
0
-18
82
70
76
95
35
77
50
56
Davenport
-15
-26
–
–
–
95
35
–
–
–
Sioux City
-20
-29
78
67
72
95
35
86
55
54
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Appendix-A
63
January
Temperature
Location
Kentucky
Louisiana
Maine
Maryland
Massachusetts
Michigan
Minnesota
Mississippi
Missouri
Nebraska
Nevada
New Hampshire
New Jersey
New Mexico
New York
7:30
A.M.
1:30
P.M.
7:30
P.M.
Dry Bulb
°F
Dry Bulb
°C
7:30
A.M.
1:30
P.M.
7:30
P.M.
Dodge City
-10
-23
78
57
61
95
35
77
45
52
Topeka
-10
-23
78
64
67
100
38
85
54
54
0
-18
78
68
69
95
35
77
52
57
Louisville
New Orleans
20
-7
85
67
73
95
35
84
64
72
Shreveport
20
-7
83
67
66
100
38
86
56
62
Portland
-5
-21
81
65
74
90
32
78
58
76
Baltimore
0
-18
72
68
56
95
35
71
52
65
Boston
0
-18
72
59
67
92
33
72
55
70
Detroit
-10
-23
82
71
77
95
35
74
50
56
Grande Rapids
-10
-23
85
78
80
95
35
76
51
54
Duluth
-25
-32
78
74
74
93
33
87
61
66
Minneapolis
-20
-29
82
72
75
95
35
82
54
54
Vicksburg
10
-12
82
65
67
95
35
87
61
70
Kansas City
-10
-23
78
64
66
100
38
76
48
47
0
-10
77
65
68
95
35
73
50
55
-25
-32
67
73
60
90
32
65
40
33
-20
-29
76
70
71
95
35
82
36
33
North Platte
-20
-29
80
62
66
85
29
84
50
46
Omaha
-10
-23
82
68
73
95
35
80
51
51
Reno
-5
-21
82
67
54
95
35
72
25
20
Concord
-15
-26
78
60
69
90
32
80
49
69
Atlantic City
5
-15
79
68
74
95
35
81
72
82
Newark
0
-18
72
79
65
95
35
75
51
65
Trenton
0
-18
73
62
68
95
35
77
55
68
0
-18
68
51
46
95
35
59
33
28
Albany
Albuquerque
-10
-23
75
63
71
93
34
79
52
64
Buffalo
-5
-21
79
72
78
93
34
78
53
63
New York
0
-18
72
61
66
95
35
75
58
68
Rochester
-5
-21
81
73
79
95
35
80
50
60
Asheville
0
-18
82
59
69
93
34
88
56
73
Raleigh
10
-12
82
57
69
95
35
86
55
72
North Dakota
Bismarck
-30
-34
77
71
75
95
35
85
52
49
Ohio
Cincinnati
0
-18
82
70
74
95
35
84
52
60
Oregon
Pennsylvania
Rhode Island
South Carolina
South Dakota
Tennessee
Appendix-A
Billings
Butte
North Carolina
Oklahoma
64
July
Relative Humidity (% RH)
Dry Bulb
°C
City
St. Louis
Montana
July
Temperature
Dry Bulb
°F
State/Province
Kansas
January
Relative Humidity (% RH)
Cleveland
0
-18
81
72
79
95
35
79
52
58
Columbus
-10
-23
83
71
76
95
35
78
52
60
Toledo
-10
-23
79
72
75
95
35
76
52
59
Oklahoma City
0
-18
79
62
65
101
38
80
49
51
Baker
-5
-21
83
81
78
90
32
69
68
36
Portland
10
12
87
82
78
90
32
86
63
48
Harrisburg
0
-18
72
49
65
95
35
78
51
62
Philadelphia
0
-18
74
65
68
95
35
78
52
64
Pittsburg
0
-18
77
67
63
95
35
80
52
63
Scranton
-5
-21
80
67
–
95
35
77
50
–
Providence
0
-18
73
60
67
93
34
79
57
73
Charleston
15
-9
87
55
76
95
35
88
64
82
Columbia
10
-12
81
57
65
95
35
83
56
68
Huron
-20
-29
79
72
76
95
35
86
52
49
Rapid City
-20
-29
71
69
67
95
35
71
42
40
Knoxville
0
-18
83
65
69
95
35
83
55
66
Memphis
0
-18
82
67
73
95
35
85
55
59
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
January
Temperature
Location
State/Province
Texas
Utah
Vermont
Virginia
Washington
City
Amarillo
January
Relative Humidity (% RH)
July
Temperature
July
Relative Humidity (% RH)
Dry Bulb
°F
Dry Bulb
°C
7:30
A.M.
1:30
P.M.
7:30
P.M.
Dry Bulb
°F
Dry Bulb
°C
7:30
A.M.
1:30
P.M.
7:30
P.M.
-10
-23
71
51
52
100
38
77
43
42
Corpus Christi
20
-7
88
66
75
95
35
93
58
68
Dallas
10
-12
81
62
62
100
38
79
50
47
El Paso
10
-12
63
45
39
100
38
60
37
30
Houston
20
-7
85
66
73
95
35
90
58
66
San Antonio
20
-7
82
60
59
100
38
88
49
45
Salt Lake City
-10
-23
80
71
72
95
35
56
27
23
Burlington
-10
-23
81
69
78
90
32
76
54
67
Richmond
15
-9
84
60
68
95
35
81
57
72
Seattle
15
-9
86
80
74
85
29
86
63
47
Walla Walla
-5
-21
80
74
78
95
35
50
33
22
West Virginia
Charleston
0
-18
79
64
70
95
35
88
53
67
Parkersburg
-10
-23
82
66
74
95
35
80
52
65
Wisconsin
Green Bay
-15
-26
75
68
73
95
35
85
58
64
Milwaukee
-15
-26
76
70
73
95
35
81
58
64
Cheyenne
-15
-26
59
48
55
95
35
73
36
40
Calgary
-29
-34
87
31
Wyoming
Alberta
British Columbia
New Brunswick
Newfoundland
North-West
Territories
Nova Scotia
Nunavut
Nortec EL/RS Outdoor
34
Edmonton
-29
-34
75
86
30
42
Grande Prairie
-43
-42
80
84
29
38
30
Lethbridge
-32
-36
66
91
33
Medicine Hat
-30
-34
73
96
36
31
Estevan point
17
-8
84
87
31
32
Fort Nelson
-40
-40
79
94
34
32
0
-18
81
85
29
44
53
Penticton
Manitoba
71
Prince George
-37
-38
82
73
23
Prince Rupert
11
-12
87
80
27
54
Vancouver
15
-9
87
80
27
41
Brandon
-29
-34
73
90
32
50
Churchill
-40
-40
76
79
26
57
The Pas
-35
-37
77
85
29
54
Winnipeg
-29
-34
78
90
32
50
Campbellton
-18
-28
77
87
31
54
Fredricton
-16
-27
72
89
32
47
Moncton
-12
-24
82
88
31
52
Saint John's
-12
-24
82
81
27
62
Corner Brook
-10
-23
84
84
29
47
Gander
-5
-21
76
85
29
45
Goose Bay
-26
-32
85
86
30
42
St. John's
1
-17
79
26
60
Frobisher
-45
-43
77
63
17
67
Resolute
-49
-45
71
54
12
81
Yellowknife
-49
-45
82
78
26
50
50
Halifax
0
-18
83
83
28
Sydney
1
-17
84
84
29
56
Yarmouth
5
-15
83
76
24
70
-38
-39
56
64
18
95
Iqaluit
(Source: Internet)
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Appendix-A
65
January
Temperature
Location
State/Province
Ontario
City
Hamilton
Quebec
Saskatchewan
Yukon Terriroty
66
Appendix-A
Dry Bulb
°F
Dry Bulb
°C
7:30
A.M.
1:30
P.M.
0
-18
75
79
7:30
P.M.
July
Temperature
Dry Bulb
°F
Dry Bulb
°C
91
33
Kapuskasing
-30
-34
Kingston
-11
-24
Kitchener
-3
-19
84
London
0
-18
80
-20
-29
77
87
77
North Bay
Prince Edward
Island
January
Relative Humidity (% RH)
July
Relative Humidity (% RH)
7:30
A.M.
1:30
P.M.
52
87
31
52
85
29
69
88
31
58
90
32
53
31
46
90
32
50
90
32
53
88
29
48
69
Ottawa
-17
-27
Peterborough
-13
-25
Sault Ste. Marie
-20
-29
Sioux Lookout
-33
-36
78
65
18
Sudbury
-20
-29
81
89
32
44
Thunder Bay
-27
-33
80
86
30
52
Timmins
-33
-36
79
90
32
45
Toronto
-3
-19
82
90
32
56
Windsor
-3
-16
92
31
51
Charlottetown
-6
-21
84
29
57
Knob Lake
-40
-40
79
55
13
70
Mont Joli
-11
-24
75
62
17
71
Montreal
-16
-27
88
31
58
Port Harrison
-39
-39
76
Quebec City
-19
-28
81
86
30
60
Sept-Iles
-27
-33
80
27
47
86
Sherbrooke
-18
-28
87
31
58
Trois Rivieres
-18
-28
88
31
58
Prince Albert
-41
-41
77
88
31
Regina
-34
-37
81
92
33
Saskatoon
-34
-37
76
90
32
Swift Current
-29
-34
79
93
34
Dawson
-56
-49
76
57
14
60
Whitehorse
-45
-43
82
78
26
40
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
7:30
P.M.
Nortec EL/RS Outdoor
B
Appendix
B.1
Installation Checklist
The following is a consolidated installation checklist that can be used in the commissioning of the unit:
Mounting
Unit mounted in an outdoor environment where it is not exposed to severe weather, or where the
temperature drops below -40 °F (-40 °C), or where strong winds may cause the unit to fall. External
bracing (supplied by others) will be required for units exposed to strong winds.
Adequate clearances maintained (according to "Location and Suggested Clearances" on page 22, and all
local and national installation codes)?
Mounting surface stable and reinforced to support the full operating weight of the humidifier?
Unit level?
Unit fastened securely?
Steam Line
Total system backpressure does not exceed 5.5 in H2O (1.37 kPa)?
Steam line maintain constant minimum upslope of 10° or downslope of 2°? If steam line runs upward,
is a condensate trap installed at the location where the steam exits the unit? Condensate line and
trap trace heated?
Steam line sized correctly, and does not exceed maximums specified in the Nortec EL/Nortec RS
manuals?
Minimum bend radius of 12 in (300 mm) for steam hose, or 5× internal diameter for rigid pipes
maintained?
Steam line does not reduce in diameter except at the steam distributor? Condensate line installed
just before the restriction?
Steam lines do not merge except at the steam distributor through a Condair adaptor?
Steam line does not sag or kink? Supported adequately? Condensate trap installed at all low points
in line?
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?
Steam line properly insulated?
Steam line purged?
Condensate Line
Drain water temperature meet local code requirements?
Condensate line from the steam distributor condensate port connected to the humidifier fill cup port,
or the drain?
Condensate lines installed at all low points, and at horizontal -to-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°)?
Nortec EL/RS Outdoor
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Appendix-B
67
Maximum distance between the condensate traps on long runs 15 ft (4.5 m)?
Condensate lines free of kinks?
Condensate lines purged?
Condensate traps primed with water?
Water Connections
Water and drain lines installed to local plumbing codes?
Shutoff valve and union fitting installed in supply line?
Water supply piping minimum 1/2 in (13 mm) diameter, and routed through a pipe chase (recommended) to the unit?
Optional 5 μm water filter installed in the water supply line (inside the building) close to the humidifier?
Water supply surge-free and pressure regulated to 30-80 psig (207-550 kPa)?
Water temperature 34-104°F (1-40°C) for Nortec EL-OC unit, and 140°F (60°C) for Nortec RS-OC unit?
Cold potable drinking water only (not RO or DI) for Nortec EL-OC unit?
For Nortec EL-OC unit, is conductivity of the water 150-1200 micro-seimens/cm, hardness 0-12 gpg
(when Silica is between 0-4 ppm), or 0-3 gpg (when Silica is between 4-14 ppm), and pH 7-7.5?
For Nortec RS-OC unit, is conductivity of the water 1-1500 micro-seimens/cm, hardness 0-12 gpg,
Silica 0-12 ppm, pH 6.5-7.5 pH, and chloride 0-50 ppm?
If the unit is installed in a cold climate, are the freeze protection valves (normally-open and a normallyclosed valve, or a 3-way normally-closed valve) installed inside building?
All drain lines routed through the bottom panel in the unit to the air gap funnel?
All gaps around the drain lines sealed where they pass through the bottom panel in the unit?
Drain lines have a constant minimum downslope of 1 in/48 in (1.2°) to funnel without touching its
sides or bottom?
Drain lines from large humidifiers empty into separate air gap funnels before connecting to the
building drain?
Air gap funnel(s) connected to a dedicated building drain (recommended) with a drainage capacity
of at least 2.3 gpm (8.7 L/min) for an Nortec EL-OC unit and 6.7 gpm (30 L/min) for a Nortec RS-OC
unit – per steam cylinder?
Drain line exiting the funnel minimum 7/8 in (22 mm) in diameter for an Nortec EL-OC unit, and
minimum 1-3/4 in (45 mm) for a Nortec RS-OC unit?
If the unit is installed in a cold climate, are the water supply and drain lines trace heated and insulated?
All pipe chases sealed to isolate the unit from pressure inside the building?
Any leaks?
Supply and drain lines flushed to remove all debris? Strainer in the fill valve clear of all debris?
Electrical Connections
Power supply meet the voltage and current requirements shown on the specification label (Figure 3
on page 13)?
All electrical cables enter the bottom of the unit through minimum IP55-rated cable glands?
Power supply have a NEMA Type 3R (or greater) weatherproof fused disconnect switch? Fusing
rated for maximum circuit protection indicated on the specification label? Disconnect switch installed
external to the unit, and NOT directly attached to unit?
All wiring done according to the wiring diagrams and instructions in this manual?
Electrical installation meet the applicable national and local codes?
68
Appendix-B
2584597_E_EN_2001_Nortec-EL-RS_Outdoor_IOM
Nortec EL/RS Outdoor
Warranty
Condair Inc. and/or Condair Ltd. (hereinafter collectively referred to as THE COMPANY), warrant for a period
of two years after installation or 30 months from manufacturer’s ship date, whichever date is earlier, that
THE COMPANY’s manufactured and assembled products, not otherwise expressly warranted, are free from
defects in material and workmanship. 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, providing the defective part(s) is returned freight prepaid
by the customer. Parts used for repairs are warranted for the balance of the term of the warranty on the
original humidifier 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 officer of THE COMPANY.
THE COMPANY’s parts or materials that are considered consumables, including but not limited to: cylinders,
filters, nozzles, membranes, media, gaskets, O-rings, etc. are NOT covered by the warranty.
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 resulting from freezing
of the humidifier, supply lines, drain lines, or quality of the water used.
THE COMPANY retains the right to change the design, specification and performance criteria of its products
without notice or obligation.
THE COMPANY’s limited warranty on accessories, not of the companies manufacture, such as controls,
humidistats, pumps, etc. is limited to the warranty of the original equipment manufacturer from date of
original shipment of humidifier.
Extended Warranty
Extended warranties are available to purchase under the conditions listed above.
Consulting, Sales and Service:
U.S.A.
835 Commerce Park drive
Ogdensburg, NY 1366-2209
CANADA
2740 Fenton Road
Ottawa, ON, K1T 3T7
Tel: 1.866.667.8321
Fax: 613.822.7964
Email: [email protected]
Website: www.condair.com
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