Attachment_4_-_Steam_Humidifier_Installation_Manual.pdf

INSTALLATION MANUAL

Electrode Steam Humidifier Nortec EL

2_ A

Humidification and Evaporative Cooling

IMPORTANT! Read and save these instructions. This manual to be left with the equipment.

Thank you for choosing Nortec

Installation date (DD/MM/YYYY):

Commissioning date (DD/MM/YYYY):

Site:

Model:

Serial number:

Manufacturer Nortec Humidity Ltd.

2740 Fenton Road, Ottawa, ON, Canada K1T 3T7 Tel. 1.866.NORTEC1, Fax 613.822.7964 nortec@humidity.com, www.humidity.com

Proprietary Notice This document and the information disclosed herein are proprietary data of Nortec Humidity Ltd. Neither this docu-ment, nor the information contained herein shall be reproduced, used, or disclosed to others without the written authorization of Nortec Humidity Ltd., except to the extent required for installation, operation or maintenance of the customer's equipment.

Liability Notice Nortec Humidity Ltd. does not accept any liability due to incorrect installation, maintenance or operation of the equipment, or due to the use of parts/components/equipment that are not authorized by Nortec Humidity Ltd.

Copyright Notice Copyright 2015, Nortec Humidity Ltd, All rights reserved.

Technical modification rights reserved.

iiiContentsNortec EL 2582302_A 1511

Contents

2 For Your Safety 3

iv Contents 2582302_A 1511 Nortec EL

1IntroductionNortec EL 2582302_A 1511

1 Introduction

1.1 Before You Start!

Thank you for purchasing the Nortec EL steam humidifier.

The Nortec EL steam humidifier incorporates the latest technical advances and meets all recognized safety standards. Never-the-less, improper use of the Nortec EL steam 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 steam 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 Nortec representative. They will be glad to assist you.

1.2 General

Limitations The subject of this manual is the Nortec EL steam humidifier. The various options and accessories may only be described in-so-far as is necessary for proper installation and operation of the equipment.

Additional information on available options and accessories can be obtained in the instructions that are supplied with them.

This manual is restricted to the installation of the Nortec EL steam humidifier, and is intended for well trained personnel who are suitably qualified for their respective tasks.

Symbols Used in This Manual

CAUTION!

The catchword "CAUTION" in conjunction with the general caution symbol is used to provide safety instructions that, if neglected, may cause damage and/or malfunction of the unit or damage to property.

WARNING!

The catchword "WARNING" in conjunction with the general warning symbol is used to provide safety instructions that, if neglected, may cause injury to personnel. Other specific warning symbols may also be used in place of the general symbol.

DANGER!

The catchword "DANGER" in conjunction with the general danger symbol is used to provide safety instructions that, if neglected, may cause severe injury to personnel or even death. Other specific danger symbols may also be used in place of the general symbol.

2 Introduction 2582302_A 1511 Nortec EL

Other Related Publications This installation manual is supplemented by other publications such as the operation and maintenance manual, spare parts list, etc., which are included in the delivery of the equipment. Where necessary, appropriate cross-references to these publications have been added in this manual.

Storage of Manual Keep this manual in a place where it is safe and readily accessible. If the equipment is moved to another location, please make sure that the manual is passed on to the new user.

If the manual is lost or misplaced, please contact your Nortec representative.

3For Your SafetyNortec EL 2582302_A 1511

2 For Your Safety

General Every person who is tasked with the installation of the Nortec EL steam humidifier must read and under-stand this manual before performing any work. Knowing and understanding the contents of the installa-tion manual and the operation and maintenance manual is a basic requirement for protecting personnel against any kind of danger, preventing faulty operation, and operating the unit safely and correctly.

All labels, signs and marking applied to the Nortec EL steam 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 quali-fied, 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 Nortec.

All personnel working with the Nortec EL steam humidifier must be familiar with, and comply with the appropriate regulations on workplace safety and prevention of accidents.

Intended Use The Nortec EL steam humidifier is intended exclusively for air humidification using a Nortec-approved steam distributor or blower pack within specified operating conditions (refer to the Operation and Maintenance Manual for details). Any other type of application, without the express written consent of Nortec, is considered to be not conforming to its intended purpose, and may lead to dangerous opera-tion and will void the warranty.

In order to operate the equipment in the intended manner all information contained in this manual, in particular the safety instructions, must be observed closely.

Dangers that may arise from the Nortec EL steam humidifier:

DANGER!

Risk of electric shock!

The Nortec EL steam humidifier is mains powered. Live parts may be exposed when the door panels are removed. Touching live parts may cause severe injury or even death.

Prevention: The Nortec EL steam humidifier must be connected to the mains only after all installa-tion work has been completed, checked for correct workmanship, and the door panels are installed and fastened securely.

WARNING!

Risk of severe burns from exposure to hot steam vapors!

The Nortec EL steam humidifier uses hot steam vapors for humidification. Bare skin exposed to hot steam vapors can result in severe burns.

Prevention: Avoid contact with hot steam. Or, wear appropriate personal protective equipment when working near steam vapors.

4 For Your Safety 2582302_A 1511 Nortec EL

Preventing Unsafe Operation All personnel working with the Nortec EL steam 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 steam humidifier without the express written consent of Nortec.

5Receiving and StorageNortec EL 2582302_A 1511

3 Receiving and Storage

3.1 Inspection

After receiving the shipment, inspect the goods as follows:

–– Inspect the shipping boxes for damage.

Report any shipping box damages to the shipping company without delay.

–– Check the goods against the packing slip to ensure that all items have been delivered.

Report any shortages to your Nortec representative within 48 hours of receipt of the goods. Nortec does not assume responsibilities for any shortages beyond this period.

–– Unpack the parts/components and check for any damage.

If parts/components are damaged, notify the shipping company immediately.

–– Verify the model type on the rating label to ensure that it is suitable for your installation. Refer to Figure 3 on page 9.

3.2 Storage and Transportation

Storage Store the Nortec EL steam 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. Please recycle packaging where possible.

6 Receiving and Storage 2582302_A 1511 Nortec EL

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7Product OverviewNortec EL 2582302_A 1511

4 Product Overview

4.1 General Description

The Nortec EL steam humidifier is an advanced electrode steam humidifier with state-of-the-art features.

It has an integrated controller which not only controls the humidifier, but also allows the humidifier to be connected to a building automation system, or an off-line computer, so it can be controlled and moni-tored remotely..

The Nortec EL steam humidifier comes in three different housing sizes depending on the steam capac-ity. Refer to Figure 1. These units can range from 5 lb/h (2.2 kg/h) to 200 lb/h (91 kg/h) – refer to "Models Overview" on page 8. Models with steam capacity up to 100 lb/h (45 kg/h) can also be ordered with a built-on blower pack. The large models, with steam capacity from 150 lb/h (68 kg/h) to 200 lb/h (91 kg/h), are equipped with dual steam cylinders – each with its own dedicated driver board.

The dedicated driver boards in the large models allow the steam cylinders to be configured to operate in series, in parallel or independent mode. Two separate sets of control signals are needed for independ-ent mode of operation. In series mode, the output capacity of steam cylinder "A" is configured to 0-50% of humidifier demand, and steam cylinder "B" to 50-100% of humidifier demand. In parallel mode, the output capacity of each steam cylinder is configured to 0-100% of humidifier demand.

In addition, up to six integrated controllers (for a maximum of 12 steam cylinders) can be set up in a "main-extension" configuration using Nortec's Linkup system to satisfy large humidification needs.

Figure 1:

Nortec EL Steam Humidifier Model Sizes

8 Product Overview 2582302_A 1511 Nortec EL

4.2 Models Overview

The Nortec EL steam humidifier is available in different sizes (S, M and L) with different heating voltages and steam capacities as shown in Table 1 below.

Table 1: Nortec EL Steam Humidifier Models

Housing Size

Nortec EL Model

110- 120V/1~ 208V/1~ 220-

240V/1~ 277V/1~ 380- 415V/1~

440- 480V/1~

550- 600V/1~ 208V/3~ 220-

240V/3~ 380V/3~ 440- 480V/3~

550- 600V/3~ lb/h (kg/h) lb/h (kg/h) lb/h (kg/h) lb/h (kg/h) lb/h (kg/h) lb/h (kg/h) lb/h (kg/h) lb/h (kg/h) lb/h (kg/h) lb/h (kg/h) lb/h (kg/h) lb/h (kg/h)

S 005 5 (2.2)

010 – 10 (4.5)

(4.5)

(4.5)

(4.5)

(4.5)

(4.5)

020 – 20 (9)

(9)

(9)

(9)

(9)

(9)

(9)

(9)

(9)

(9)

(9)

030 – – – – – – 30 (13.6)

(13.6)

(13.6)

(13.6)

(13.6)

M 050 – – – – – – 50 (22.7)

(22.7)

(22.7)

(22.7)

(22.7)

075 – – – – – – 75 (34)

(34)

(34)

(34)

(34)

100 – – – – – – 90 (41)

(45)

(45)

(45)

(45)

L 150* – – – – – – 150 (68)

(68)

(68)

(68)

(68)

200* – – – – – – 180 (82)

(91)

(91)

(91)

(91)

* These models have two steam cylinders.

4.3 Model Designation

The specification label on the side (and the underside) of the Nortec EL steam humidifier shows its model number, serial number and ratings – refer to Figure 3 on page 9. The breakdown of the model number is shown in Figure 2. For other details of the specification label refer to the Operation and Maintenance Manual.

Figure 2:

Nortec EL 150 Space 400V/3~

Product series:

Steam capacity (lb/h):

Model:

Blank = Duct Space = with Blower Pack RMBP = with power for remote-mounted Blower Pack

Heating voltage and phase:

Model Breakdown

9Product OverviewNortec EL 2582302_A 1511

Figure 3:

Circuit Protection

MADE IN CANADA

HUMIDIFIER

LISTED

205X

MODEL:

VOLTS:

AMPS:

KW:

MAX:

XXXXXXXXXXXXXXXXXXXXXXXX S/N: XXXXXXX

XXXXXXXXXXXX PHASE: XXXX HZ: XXXXXX

XXXXX

XXXXXXXXX

XXX

DATE: XXXXXXXXX

XXXXXXXX B

AMPS

Nortec EL Steam Humidifier Specification Label

4.4 Options

Table 2 shows the list of options for the Nortec EL steam humidifier. Contact your Nortec representative for details.

Table 2: Nortec EL Options

Option Application

Mounting bar Provides two mounting bars which fit into each other for wall mounting. One bar is fastened to the humidifier, the other bar is fastened to the wall. The unit can be hung onto the wall by engaging the two mounting bars. Note: The unit can also be wall mounted (without this op-tion) using the keyhole cutouts on the back of the humidifier housing.

Mounting rack Stand-alone rack for mounting the Nortec EL steam humidifier.

Remote relay PCB (printed circuit board)

Printed circuit board with relay contacts for connecting remote status displays for “Unit On”, “Steam”, “Error” and “Service”.

Accessory relay PCB (printed circuit board)

Printed circuit board with relay contacts for connecting other accessories such as fans and supply water flushing valves.

Internal primary fusing Optional internal fuse for heating voltage power supply. Only available as a factory-installed option. Note: This is not a substitute for a dedicated external disconnect switch.

Fill cup extension Kit for extending the fill cup so the humidifier can accommodate backpressure of up to 30 in H20 (7.4 kPa).

Extreme drain water cooling Kit for cooling drain water to less than 120°F (49°C) before it is discharged into the drain.

Foam detection kit Kit for extending the ability of the humidifier to handle a wider range of water supply quality.

BACnet MSTP BTL PCB to provide BTL certified BACnet MSTP. This option also enables full Master functionality when using BACnet MSTP.

BACnet IP BTL PCB to provide BTL certified BACnet IP.

LonWorks board Supplementary board to connect the Nortec EL to a building management system using LonWorks.

10 Product Overview 2582302_A 1511 Nortec EL

Option Application

Remote blower pack power kit

When a remote blower pack is being installed with the humidifier, this option provides a transformer, fusing, and a terminal block inside the humidifier to provide power to the remote blower pack. Without this option, a separate 110-120V supply must be provided for the remote blower pack.

4.5 Accessories

Table 3 shows the list of accessories for the Nortec EL steam humidifier. Contact your Nortec representa-tive for details. To install and operate the accessories, please refer to the instructions supplied with the accessories.

Table 3: Nortec EL Accessories

Accessory Application

Steam distributor Steam distribution system for use in an air duct.

SAMe steam distribution manifold

Steam distribution system for use in an air duct where reduced absorption distance is re-quired.

Blower pack, built-on or remote

For direct room humidification or use in conditioned spaces without a built-in air distribution system. The EL Space model has a blower pack mounted directly, the EL RMBP model has power for a remote-mounted blower pack (blower pack ordered as an accessory).

Digital or analog control humidistat with either On/Off or modulating operation

Input device used to meter the output of the 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.

11InstallationNortec EL 2582302_A 1511

5 Installation

5.1 General

Strictly observe and perform all installation tasks including the mounting of the unit and connection of the water, steam and power supplies as described in this manual.

Observe and comply with all local and national codes dealing with water, steam and electrical installations.

Nortec does not accept any liability for installation of humidification equipment by unqualified personnel, or the use of equipment/parts that are not authorized by Nortec.

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 Some installation work requires removal of the door panels on the humidifier. Please note the following:

DANGER!

Risk of electric shock!

The Nortec humidifier is mains powered. Live parts may be exposed when the door panels are open. Touching live parts may cause severe injury or even death.

Prevention: The Nortec 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 fas-tened securely.

CAUTION!

Risk of damage to internal components from 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.

12 Installation 2582302_A 1511 Nortec EL

5.2 Installation Overview

The Nortec EL humidifier can use a steam distributor to distribute steam through air ducts – refer to Figure 4. The humidifier can also use a blower pack to distribute steam directly into a conditioned space

– refer to Figure 5 on page 14.

5.2.1 Typical Installation for Duct Humidification

Figure 4:

min. 10 ft ( 3m)

B or min. 8-10 ft (

2.4-3m) n

1, 2

2, 3

Typical Installation for Duct Humidification

13InstallationNortec EL 2582302_A 1511

Legend:

Note 1: The steam line should be as short as possible – the maximum length varies depending on unit capacity and material used (refer to Table 6 on page 27). The steam line should have adequate upslope (minimum 10°) /downslope (minimum 2°), without restrictions and with a condensate trap at the lowest point. Steam traps are required every 15 ft (5 m) for long runs. The steam line must rise a minimum of 12 in (30 cm) straight up before running to the steam distributor. The minimum bend radius for steam hose is 12 in (30 cm), or 5× the internal diameter for rigid pipes. Refer to Table 6 on page 27 for steam line recommendations.

Note 2: The drain line should have a minimum internal diameter of 7/8 in (22 mm), with a constant minimum downslope of 1 in/48 in (1.2°) to the funnel, and must not touch the sides or bottom of funnel.

Note 3: The air gap and trap should be located to the left of the humidifier, as shown. A 2-1/2 in to 7/8 in (63.5 mm to 22 mm) reducer is ideal (Nortec option P/N 2522172). The hose must not touch the bottom of the funnel.

Note 4: Water supply should be potable drinking water, with conductivity of 150-1200 micro-siemens/ cm (0-12 gpg). The water supply line should be minimum 1/2 in (12.5 mm) in diameter with a shutoff valve. An optional 5 μm filter is also recommended. Water temperature should be 34-104°F (1-40°C).

Pressure should be surge-free and regulated to 30-80 psig (207-550 kPa).

Note 5: Condensate drain line from the steam distributor should have a constant minimum downslope of 1 in/48 in (1.2°), with no restrictions and a minimum trap height of 8 in (200 mm). The trap should be located a minimum of 12 in (30 cm) below the steam distributor.

Note 6: The distance from the steam distributor to any obstruction or transition in the duct should be equal to the calculated absorption distance Bn or a minimum of 8-10 ft (2.4-3 m) if Bn is not known. For details refer to the installation manual for the relevant steam distribution system. The absorption distance can be obtained using Nortec HELP. The steam distributor capacity must equal or exceed the maximum capacity of the humidifier.

Note 7: The air supply should be 6 in H2O (1500 Pa) maximum, and -4 in H2O (-1000 Pa) minimum.

http://www.nortechelp.com

14 Installation 2582302_A 1511 Nortec EL

5.2.2 Typical Installation for Direct Room Humidification

Figure 5:

5, 6

Typical Installation for Direct Room Humidification

Note 1: The steam line should be as short as possible – the maximum length varies depending on unit capacity and material used (refer to Table 6 on page 27). The steam line should have adequate upslope (minimum 10°) /downslope (minimum 2°), without restrictions and with a condensate trap at the lowest point. Steam traps are required every 15 ft (5 m) for long runs. The steam line must rise a minimum of 12 in (30 cm) straight up before running to the steam distributor. The minimum bend radius for steam hose is 12 in (30 cm), or 5× the internal diameter for rigid pipes. Refer to Table 6 on page 27 for steam line recommendations.

15InstallationNortec EL 2582302_A 1511

Note 2: The drain line should have a minimum internal diameter of 7/8 in (22 mm), with a constant mini-mum downslope of 1 in/48 in (1.2°) to the funnel, and must not touch the side or bottom of the funnel.

Note 3: The air gap and trap should be located to the left of the humidifier, as shown. A 2-1/2 in to 7/8 in (63.5 mm to 22 mm) reducer is ideal (Nortec option P/N 2522172). The hose must not touch the bottom of the funnel.

Note 4: Water supply should be potable drinking water, with conductivity of 150-1200 micro-siemens/ cm (0-12 gpg). The water supply line should be minimum 1/2 in (12.5 mm) in diameter with a shutoff valve. An optional 5 μm filter is also recommended. Water temperature should be 34-104°F (1-40°C).

Pressure should be surge-free and regulated to 30-80 psig (207-550 kPa).

Note 5: For remote-mounted blower pack, the condensate line can be routed to either an external drain or to the fill cup of the humidifier. The condensate drain line from the blower pack should have a constant minimum downslope of 1 in/48 in (1.2°), with no restrictions and a minimum trap height of 8 in (200 mm).

The trap should be located a minimum of 12 in (30 cm) below the condensate port on the blower pack.

5.3 Site Requirements

In preparation for installation of the Nortec EL steam humidifier, make sure that the following site require-ments are satisfied. Report any discrepancies to the site engineer.

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.

�� When possible, install the humidifier below the steam distributor. Make sure that the selected loca-tion permits proper routing of steam and condensate lines as described in "Best Practices for Installing Steam and Condensate Lines" on page 26.

Mounting

�� Allow adequate clearances around the humidifier for ease of maintenance. Although the Nortec EL steam humidifier requires no side clearance, Nortec recommends minimum clearances of 6 in (150 mm) on the side. A 24 in (610 mm) clearance between the humidifier and the ground is required. Observe all local and national installation codes. Nortec is not responsible for any instal-lation code violations.

�� Do not mount the humidifier on hot surfaces, or surfaces that can freeze, or near vibrating compo-nents, or on the floor. In addition, the mounting surface must be able to withstand temperatures of 140-158°F (60-70°C) that can be generated during operation of the humidifier.

�� The humidifier should be mounted on a wall or other suitable surface that offers a sufficiently high load-bearing capacity. Refer to Table 4 on page 16 for weights.

�� The Nortec EL steam humidifier should be installed in a drip-proof location within buildings, where the ambient temperature is 41-104°F (5-40°C) and the relative humidity is 5-95% (non-condensing). If the humidifier is to be installed outdoors, it must be housed in a weather-proof enclosure. If necessary, the enclosure must have suitable thermostat-controlled heating and heated piping with insulation.

Water Supply

�� The water supply line should be minimum 1/2 in (12.7 mm) in diameter, with a shutoff valve and a union fitting.

�� The water supply to the humidifier must be cold potable drinking water (and not RO or DI water). The conductivity of the water should be 150-1200 micro-seimens/cm (hardness 0-12 gpg, when Silica is between 0-4 ppm, 0-3 gpg when Silica is between 4-14 ppm, Silica content above 14 ppm is not recommended). Alkalinity should be between 7 and 7.5 pH.

�� Nortec recommends the water supply should be filtered to 5 μm, surge-free and pressure regulated to 30-80 psig (207-550 kPa). Water temperature should be 34-104°F (1-40°C).

�� The water supply should be free of additives such as corrosion inhibitors, disinfectants, etc., which may affect the performance of the humidifier. If using softened or partially softened water, please contact your Nortec representative for assistance.

16 Installation 2582302_A 1511 Nortec EL

Drainage

�� The space in which the humidifier is to be installed should have a floor drain. However, if a floor drain is not available, a leakage monitoring device must be installed (by others) to permit interruption of the water supply in case of a leakage.

Power Supply

�� The power supply to the humidifier should be adequate to match the full voltage and current draw shown on the specification label of the humidifier. In addition, the power supply must have an exter-nal dedicated fused disconnect switch. The fusing must not exceed the maximum circuit protection indicated on the specification label. Refer to Figure 3 on page 9.

5.4 Mounting the Humidifier

Refer to "Site Requirements" on page 15 for the location and mounting requirements for the Nortec EL steam humidifier.

5.4.1 Location and Clearances

The location of the humidifier depends largely on the steam distribution system. For the required minimum clearances for a Nortec EL steam humidifier with a built-on blower pack refer to "Placement of Humidifier" on page 24; or refer to the blower pack manual for a remote-mounted blower pack.

For all other steam distribution systems refer to Figure 6 and Table 4. The clearance dimensions shown are for reference only, and are suggested clearances for ease of maintenance. Consult local and national installation codes. Nortec does not accept responsibility for violations of the installation codes.

Table 4: Nortec EL Humidifier Housing Dimensions and Weights

Housing Small Medium Large

Dimension (nominal) W 16.5 in (420 mm)

20.9 in (530 mm)

39.4 in (1000 mm)

D 14.5 in (370 mm)

15.8 in (400 mm)

15.8 in (400 mm)

H 26.4 in (670 mm)

30.7 in (780 mm)

30.7 in (780 mm)

Net weight 45 lb (21 kg)

85 lb (39 kg)

120 lb (55 kg)

Operating weight 65 lb (30 kg)

150 lb (68 kg)

245 lb (112 kg)

17InstallationNortec EL 2582302_A 1511

Figure 6:

WD

H

0 in

(0 mm) m in

. 2 in (6 m m m in

. 1 5.

in

(4 m m min. 36 in (915 mm)

0 in

(0 mm)

Nortec EL Humidifier Suggested Clearances

18 Installation 2582302_A 1511 Nortec EL

5.4.2 Standard Mounting

Locate the Nortec EL humidifier according to "Location and Clearances" on page 16, and install it on the mounting surface as follows:

1. Locate 2×4 wooden studs or equivalent support in the mounting surface, and mark the attachment points “A” and “B” at the desired position with the help of a level. For small or medium housing refer to Figure 7. For large housing refer to Figure 8 on page 19.

Figure 7:

A

A

B

B

X

Y

Standard Mounting, Small or Medium Housing

1 Lag bolt, 1/4×2 in (×4)

Dimension Housing Size

Small Medium

X 12.0 in (305 mm)

16.0 in (406 mm)

Y 17.56 in (446 mm)

20.71 in (526 mm)

19InstallationNortec EL 2582302_A 1511

Figure 8:

X

A

A

A B

B

B

X

Y

Standard Mounting, Large Housing

1 Lag bolt, 1/4×2 in (×6)

2. Install 1/4×2 in lag bolts (supplied by others) at attachment points "A". Use longer screws if going through drywall or other structural material into the mounting surface. Allow the heads of the screws to extend 0.25 in (5 mm) from the mounting surface so that the humidifier can be installed on the bolts.

3. Remove the door panels from the humidifier.

WARNING!

Heavy object – risk of injury!

The small humidifier weighs 45 lb (20 kg), and the large humidifier weights 120 lb (54 kg).

Prevention: Use an appropriate lifting device, or request assistance to raise the humidifier into position.

4. Carefully raise and install the humidifier onto the installed lag bolts.

5. Align the humidifier with the help of a level, then tighten the lag bolts.

6. Install additional lag bolts (supplied by others) into the mounting surface at attachment points “B”, and fasten securely.

7. Reinstall the door panels, and fasten them securely.

Dimension Housing Size

Large

X 16.0 in (406 mm)

Y 16.75 in (426 mm)

20 Installation 2582302_A 1511 Nortec EL

5.4.3 Mounting Using Optional Mounting Bar

Locate the Nortec EL humidifier according to "Location and Clearances" on page 16, and install it on the mounting surface as follows using the optional mounting bar. Mounting bars are a factory-installed option.

If ordered, the corresponding bars and bumpers will be riveted/installed to the housing at the factory.

1. Locate 2×4 wooden studs or equivalent support in the mounting surface, and mark the attachment points “A” at the desired position with the help of a level. For small or medium housing refer to Figure 9.

For large housing refer to Figure 10 on page 21.

Figure 9:

X

A

A

A

X

Optional Mounting, Small or Medium Housing

Dimension Housing Size

Small Medium

X 6.0 in (152 mm)

8.0 in (203 mm)

21InstallationNortec EL 2582302_A 1511

Figure 10:

X

A X

A

A

Optional Mounting, Large Housing

2. Align the holes in the mounting bar with the marks for the attachment points "A", and install the mounting bar on the mounting surface with 1/4×2 in lag bolts and flat washers (supplied by others).

Use longer bolts if going through drywall or other structural material into the mounting surface. Level the mounting bar before tightening the lag bolts.

3. Remove the door panels from the humidifier.

WARNING!

Heavy object – risk of injury!

The small humidifier weighs 45 lb (20 kg), and the large humidifier weights 120 lb (54 kg).

Prevention: Use an appropriate lifting device, or request assistance to raise the humidifier into position.

4. Carefully raise the humidifier into position, and hang it on the mounting bar.

5. Secure the humidifier to the mounting bar with the M6×10 screw (supplied), and fasten securely.

6. Reinstall the door panels, and fasten them securely.

Dimension Housing Size

Large

X 16.0 in (406 mm)

22 Installation 2582302_A 1511 Nortec EL

5.4.4 Mounting to OSHPD Seismic Requirements

The Nortec EL is certified to OSHPD seismic requirements in its standard configuration (reference OSP- 0225-10); no additional kits are required. The humidifier must be mounted as per the instructions in this section in order to fulfill the seismic requirements.

Locate the Nortec EL humidifier according to "Location and Clearances" on page 16, and secure it to double-layered 3/4 in (20 mm) thick plywood (or equivalent) as follows:

1. Secure the double-layered 3/4 in (20 mm) plywood sheets to the selected mounting surface.

2. Mark the attachment points “A” and "B" at the desired position on the plywood sheets (or equivalent) with the help of a level. For small or medium housing refer to Figure 11. For large housing refer to Figure 12 on page 23.

3. Install 1/4×2 in grade B5 (or equivalent) lag bolts and flat washers (supplied by others) at attachment points "A". Allow the heads of the screws to extend 0.25 in (5 mm) from the mounting surface so that the humidifier can be installed on the bolts.

Figure 11:

A

A

B

B

X

Y

Optional Seismic Mounting, Small or Medium Housing

Dimension Housing Size

Small Medium

X 12.0 in (305 mm)

16.0 in (406 mm)

Y 17.56 in (446 mm)

20.71 in (526 mm)

23InstallationNortec EL 2582302_A 1511

Figure 12:

X

A

A

A B

B

B

X

Y

Optional Seismic Mounting, Large Housing

4. Remove the door panels from the humidifier.

WARNING!

Heavy object – risk of injury!

The small humidifier weighs 45 lb (20 kg), and the large humidifier weights 120 lb (54 kg).

Prevention: Use an appropriate lifting device, or request assistance to raise the humidifier into position.

5. Carefully raise and install the humidifier onto the installed lag bolts.

6. Align the humidifier with the help of a level, then tighten the lag bolts.

7. Install additional grade B5 (or equivalent) lag bolts and flat washers (supplied by others) into the plywood sheet (or equivalent) at attachment points “B”, and fasten securely.

8. Reinstall the door panels, and fasten them securely.

Dimension Housing Size

Large

X 16.0 in (406 mm)

Y 16.75 in (426 mm)

24 Installation 2582302_A 1511 Nortec EL

5.4.5 Mounting Checklist

Check the following to ensure that the humidifier has been mounted correctly:

�� Unit installed in the correct location (according to "Location and Clearances" on page 16)?

�� Mounting surface stable, and suitable for mounting the humidifier?

�� Unit level?

�� Unit fastened securely?

5.5 Steam Line Connections

Steam generated by the Nortec EL humidifier is not pressurized, but is delivered at atmospheric pressure.

It can be distributed directly into a conditioned space with a built-on or remote-mounted blower pack, or into an AHU (air handling unit) using Nortec steam distributors or Nortec SAM-e steam distribution manifold.

Please read "Best Practices for Installing Steam and Condensate Lines" on page 26 before installing steam lines.

5.5.1 Steam Distribution Using the Air Handling Unit

For placement of the steam distributor or SAM-e steam distribution manifold in the air handling unit, as well as best practices and installation procedures, refer to their installation manuals.

5.5.2 Steam Distribution Using the Blower Pack

5.5.2.1 Placement of Humidifier

Figure 13 on page 25 and Table 5 show the minimum clearances required for installation of a Nortec EL steam humidifier with a built-on Nortec blower pack.

Table 5: Minimum Clearances

Blower Pack

Capacity 5 lb/h (2.3 kg/h)

10 lb/h (4.5 kg/h)

20 lb/h (9 kg/h)

30 lb/h (13.6 kg/h)

50 lb/h (22.7 kg/h)

75 lb/h (34.0 kg/h)

100 lb/h (45.4 kg/h)

Low Speed

Dimension "A" (minimum), Low speed 9 in (0.23 m)

18 in (0.46 m)

75 in (1.91 m)

86 in (2.19 m)

174 in (4.42 m)

189 in (4.81 m)

248 in (6.3 m)

Dimension "B" (minimum), Low speed 12 in (0.31 m)

48 in (1.22 m)

84 in (2.14 m)

High Speed

Dimension "A" (minimum), High speed 6 in (0.16 m)

60 in (1.53 m)

71 in (1.81 m)

132 in (3.36 in)

153 in (3.89 m)

218 in (5.54 m)

Dimension "B" (minimum), High speed 12 in (0.31 m)

Dimension "C" (minimum) 86.5 in (2.2 m)

Dimension "D" (suggested) 12 in (0.31 m)

30 in (0.77 m)

Note:

25InstallationNortec EL 2582302_A 1511

Figure 13: Clearance Requirements for

B

C

D

D

A

Nortec EL Humidifier with Built-on Blower Pack

5.5.2.2 Remote-Mounted Blower Pack

For the installation requirements and installation procedure for the remote-mounted blower pack, refer to the blower pack manual.

26 Installation 2582302_A 1511 Nortec EL

5.5.3 Best Practices for Installing Steam and Condensate Lines

Before proceeding with installation of the steam lines, Nortec recommends that you familiarize yourself with the following best practices for installing atmospheric steam lines and condensate lines. Refer to Figure 14, Figure 15, Figure 16 and Figure 17 for installation examples.

Steam Lines

–– Use rigid steam pipes made of copper or stainless steel exclusively, and use steam hoses for short distances only. Use original steam and condensate hoses from your Nortec representative. Steam and condensate lines made of any other materials may adversely affect the operation of the unit, and will void the warranty. Refer to Table 6 on page 27 for details.

WARNING!

Excessive backpressure can result in serious injury or damage to equipment!

Excessive backpressure in the steam line may affect the proper functioning of the humidifier, and may also cause unexpected release of hot steam vapors. Bare skin exposed to the hot steam vapours can result in severe burns.

Prevention: Minimize the length of the steam line and the number of bends, as the backpressure can rise approximately 0.12 in H2O for every foot (100 Pa for every meter) of steam line, and every 90° elbow.

–– The length of the steam line should be kept as short as possible. Minimum bend radius of 12 in (300 mm) for steam hoses or 5× the internal diameter for rigid steam pipes. Exceeding the maximum length can affect performance of the unit and may void the warranty. Note: With oversized steam lines the maximum length can be extended. Use a Nortec steam hose for short distances only. Refer to Table 6 on page 27 for details.

IMPORTANT! When determining the length and routing of steam lines, allowances must be made for thermal expansion. If a steam hose is used, allowances must be made for shrinkage in the length of the hose due to aging.

–– Do not decrease the diameter of the steam line, as it increases the backpressure in the line and also allows condensation of the steam. If that is unavoidable, install a Nortec steam line reducer at the connection to the steam distributor only, and install a condensate line just before the restriction.

Contact your Nortec representative for details of the reducer.

–– If necessary, increase the diameter of the steam line on the downslope and install a condensate trap at the lowest point.

–– Do not combine steam lines except at the steam distributor. Use a Nortec adaptor specifically de-signed for that purpose, and only if the humidifier steam cylinders operate in parallel.

–– If using blower packs with large Nortec EL humidifiers, do not connect the output from both steam cylinder to a single blower pack. Each blower pack has a maximum capacity of 100 lb/h (45 kg/h).

–– The steam line from the humidifier must lead straight upwards for a minimum of 12 in (300 mm), before continuing on to the steam distribution system with a upslope (minimum 10°) /downslope (minimum 2°).

–– Use short lengths of steam hose to connect the steam line to the humidifier or steam distributor.

Secure the steam hoses with clamps.

CAUTION!

Do not over-tighten the hose clamp on the steam hose. The maximum torque for 7/8 in (22 mm) hose clamps is 12 in·lbs (135 N·cm), and 16 in·lbs (180 N·cm) for 1-3/4 in (45 mm) hose clamps.

27InstallationNortec EL 2582302_A 1511

–– To minimize formation of condensation and maximize efficiency, the steam lines made of rigid pipes (copper or stainless steel) must be insulated with a minimum of 1 in (25 mm) of pipe insulation over its entire length.

–– The weight of the steam line must be supported so there is no load on the humidifier.

WARNING!

Risk of severe burns from exposure to hot steam vapours!

Restrictions in the cross-section of the steam line will cause excessive backpressure in the steam cylinder when the unit is operating, which may cause unexpected release of hot steam vapors. Bare skin exposed to the hot steam vapours can result in severe burns.

Prevention: Observe the following:

• Upon completion of the installation, purge the steam line to remove any contaminants and installation materials.

• If using a steam hose make sure there are no kinks in the hose. A heated hose is more likely to kink.

• To prevent condensate pockets, the steam line must not sag. If necessary, support the steam line with pipe clamps, trough, or wall brackets, and install a condensate drain at the lowest point in the steam line.

• Do not install a shutoff valve (e.g. a manually operated shutoff valve, solenoid valve, etc.) in the steam line.

Table 6: Steam Line Recommendations

Model

Steam Line Over-sized Steam Line**

Steam Losses***

Maximum Equivalent

Length

MED-L

Copper

Pipe Diameter

Stainless Steel Pipe Diameter

Maximum Length

MED-L

Copper

Pipe Diameter

Stainless Steel Pipe Diameter

EL005 7 ft (2 m)

3/4 in (20 mm)

7/8 in × 0.049 wall

(22 mm × 1.25 mm wall)

14 ft (4 m)

1 in (25 mm)

1-1/8 in × 0.049 wall

(29 mm × 1.25 mm wall)

0.06 lb/h/ft (0.09 kg/h/m)

EL010 12 ft (3.5 m)

24 ft (7 m)

EL020 17 ft (5 m)

34 ft (10 m)

EL030 22 ft (6.5 m)

44 ft (13 m)

EL050 43 ft (13 m)

1-1/2 in (40 mm)

1-3/4 in × 0.065 wall

(45 mm × 1.65 mm wall)

86 ft (26 m)

2 in (50 mm)

2 in × 0.065 wall

(50 mm × 1.65 mm wall)

0.11 lb/h/ft (0.18 kg/h/m)

EL075

EL100

47 ft (14 m)

94 ft (28 m)

EL150*

EL200*

50 ft (15 m)

1-1/2 in (40 mm)

1-3/4 in × 0.065 wall

(45 mm × 1.65 mm wall)

100 ft (30 m)

2 in (50 mm)

2 in × 0.065 wall

(50 mm × 1.65 mm wall)

Nortec Steam Hose

EL005-

EL030

10 ft (3 m)

P/N 1328810 – 7/8 in (22 mm) 0.1 lb/h/ft (0.15 kg/h/m)

EL050-

EL200

10 ft (3 m)

P/N 1328820 – 1-3/4 in (45 mm) 0.15 lb/h/ft (0.22 kg/h/m)

Notes:

* Use a single steam line for each steam cylinder. Do not combine lines except at a distributor, and only if using the humidifiers in parallel.

** The over-sized lines may require a reducer at the humidifier and the steam distributor.

*** Based on 1 in (25 mm) insulated copper pipe.

28 Installation 2582302_A 1511 Nortec EL

Condensate Lines

–– The condensate drain line from the steam distributor must have a constant minimum downslope of 1 in/48 in (1.2°), with a minimum trap height of 8 in (200 mm), and may be connected to the fill cup port on the top of the humidifier, or to the building floor drain with condensate cooler as required. The condensate trap must be at least 12 in (300 mm) below the condensate port on the steam distribution system or the "T" connector in the steam line.

An online-sign.com production sign ref st151432911270

WARNING!

Risk of severe burns from hot fluids or steam!

The condensate lines may be filled with hot fluids or steam. Bare skin in contact with hot fluids or steam can result in severe burns.

Prevention: Never plumb the condensate lines to empty into a sink used by personnel. Always connect the lines to a drain according to applicable national and local plumbing codes.

–– Condensate lines must also be installed at all low points and at vertical transitions in the steam line. The condensate drain lines should always connect to full-size "T" connectors in the steam line.

Install full-size "T" connectors for condensate drain lines at all transitions from vertical to horizontal.

–– For a steam line that is longer than 15 ft (4.5 m) up to the maximum recommended length, install condensate lines and traps at regular intervals. The maximum distance between the condensate traps for long runs is 15 ft (4.5 m).

–– Use 3/8 in (9.5 mm) Nortec condensate hose, or 3/8 in (9.5 mm) stainless steel pipe or 1/4 in (6.5 mm) copper pipe for traps in the condensate lines.

–– Make sure that the condensate lines allow proper flow.

–– Do not over-tighten the hose clamps on the condensate lines.

IMPORTANT! Before starting up the unit, fill the traps in the condensate lines with water.

29InstallationNortec EL 2582302_A 1511

Figure 14:

A

B

C

D

Installation Example – Steam Distributor 20 in (500 mm) Above Humidifier

must have a constant minimum downslope of 1 in/48 in (1.2°).

C The steam line must not exceed the length specified in Table 6 on page 27. The minimum bend radius is 12 in (300 mm) for a steam hose, or 5× the internal diameter for rigid steam pipes.

D All condensate traps must have a minimum height of 8 in (200 mm).

30 Installation 2582302_A 1511 Nortec EL

Figure 15:

BD

D

C

F

A

A

B

B

C

D

C

E

Installation Example – Steam Distributor Less Than 20 in (500 mm) Above Humidifier

hose, or 5× the internal diameter for rigid steam pipes.

31InstallationNortec EL 2582302_A 1511

Figure 16:

B

D

C

A

E

Installation Example – Rigid Steam Pipe With Insulation

must have a constant minimum downslope of 1 in/48 in (1.2°).

C The steam line must not exceed the length specified in Table 6 on page 27. The minimum bend radius is 12 in (300 mm) for a steam hose, or 5× the internal diameter for rigid steam pipes.

32 Installation 2582302_A 1511 Nortec EL

Figure 17:

AA B

C

ED

Installation Example – Remote-Mounted Blower Pack

hose, or 5× the internal diameter for rigid steam pipes.

1 in/48 in (1.2°).

33InstallationNortec EL 2582302_A 1511

5.5.3.1 Common Steam and Condensate Line Installation Mistakes

Some common steam and condensate line installation mistakes are shown in Figure 18.

Figure 18:

2, 3

4, 6

2, 3

Common Steam and Condensate Line Installation Mistakes