Attachment_3_-_Steam_Humidifier_Engineering_Manual.pdf

ENGINEERING MANUAL

Electrode Steam Humidifier Nortec EL-Series

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Humidification and Evaporative Cooling

NORTEC

Thank you for choosing Condair.

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 selection, installation, operation or maintenance of the 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 © Condair Ltd, All rights reserved.

Modification rights reserved.

3ContentsNortec EL 2577597_E_EN_2008_Nortec-EL_EM

Contents

4 Contents 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

5Nortec EL Electrode Steam HumidifierNortec EL 2577597_E_EN_2008_Nortec-EL_EM

1 Nortec EL Electrode Steam Humidifier

1.1 General Description

The Nortec EL humidifier is an atmospheric steam generator, which operates on the electrode heating principle – heat is generated by the resistance to flow of electric charge between electrodes immersed in water. The Nortec EL humidifier is designed for direct room humidification using a blower pack, or humidification through the ducts in an air handling unit using a steam distributor. It is suitable for a variety of humidification applications including commercial offices, hospitals, computer rooms, museums, clean rooms, schools, printing plants, and other applications where reliability is required.

The Nortec EL humidifier comes in three different housing sizes – small, medium and large depending on the steam output. The small model has capacities ranging from 5 lb/h (2 kg/h) to 30 lb/h (14 kg/h), the medium model from 50 lb/h (23 kg/h) to 100 lb/h (45 kg/h), and the large model from 150 lb/h (68 kg/h) to 200 lb/h (91 kg/h). The small and medium size models can be ordered with a built-on blower pack.

Refer to Figure 1. Table 8 on page 24, Table 9 on page 26 and Table 10 on page 27 list the specifications for each model.

The large model has two steam cylinders instead of one. The construction is similar to the single cylinder units except that it has two fill and drain connections, and two driver boards and low voltage terminal strips – one for each steam cylinder (designated "A" and "B"). The separate driver boards and low volt-age terminal strips allow the large model to handle two separate sets of control signals. This gives the large Nortec EL humidifier the flexibility to operate in independent mode, parallel mode or series mode so it can control humidity in up to two different zones.

In independent mode, each steam cylinder operates independent of the other to control humidity in two separate zones. The control signals are wired to the driver board and low voltage terminal strip that controls the corresponding zone.

In parallel mode, one set of control signals is wired to the driver board and low voltage terminal strip for steam cylinder "A", which controls the humidity in both zones. Both steam cylinders respond equally to the demand for humidity.

In series mode, one set of control signals is wired to the driver board and low voltage terminal strip for steam cylinder "A", which control the humidity in both zones. In this mode, both steam cylinders operate in a staged fashion – steam cylinder "A" can be configured to handle output from 0-50% of demand, and cylinder "B" from 50-100% of demand. The advantage is that it permits the unit to vary its output from 25-100% of its capacity – 25% being the minimum output capacity of each steam cylinder.

Figure 1:

41 3 52

Nortec EL Humidifier Models

built-on blower pack

and built-on blower pack

6 Nortec EL Electrode Steam Humidifier 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

1.2 Features

The Nortec EL humidifier has many advanced features that set it apart from other humidifiers.

ready to install out-of-the-box.

perfect humidification technology.

BACnet IP. Other protocols are available as options.

• Standard drain water cooling which tempers drain water to meet local plumbing code requirements before it is emptied into the drain.

to satisfy large humidification needs.

Refer also to the detailed features listed in Table 1.

7Nortec EL Electrode Steam HumidifierNortec EL 2577597_E_EN_2008_Nortec-EL_EM

1.2.1 Detailed Features List

Table 1: Nortec EL Features

Feature Description Nortec EL

Standard Optional C on tr ol a nd U se r I nt er fa ce

F ea tu re s

Touchscreen interface Intuitive user interface to configure and monitor the humidi-fier.

Digital graphic display Displays visual feedback of the humidifier inputs (conditioned environment humidity and setpoints).

On/Off control Operate the equipment with simple On/Off controls.

Up to two modulating control inputs per cylinder

Allows modulating humidifier output to improve accuracy of supply humidity.

Integrated PI controller Provides direct compatibility with humidity transducers (RH sensor) with adjustable setpoints and P/I parameters.

Demand signal acceptance Provides direct compatibility with modulating demand signals.

Digital communication protocols

Provides BMS interface with integrated BACnet IP, BACnet MS/TP and Modbus protocols.

BTL-certified protocols Provides BTL-certified BACnet IP, BACnet MS/TP connectiv-ity, and enables use of LonWorks.

Remote fault indication board Allows dry contact feedback on unit operation.

Accessory relay board Allows enabling/disabling of accessory devices such as fans and valves.

Remote interface Allows direct Ethernet access to the humidifier through a PC.

Independent circuits on multi-cylinder humidifiers

Allows for independent control of multiple humidifier cylinders through a common control system.

Status indicator LED Provides quick feedback on operating status of the unit.

Adjustable units of measure Display settings in metric or imperial units of measure.

Manual output adjustment Provides the ability to limit the maximum steam output of the humidifier.

O pe ra tio n an d M ai nt en an ce

Auto pulse drain valve Clears potential drain obstructions.

Disposable cylinder Allows for fast, clean, simple service of the humidifier.

Auto-adaptive control system Efficient water consumption and humidifier performance.

Drain water cooling Drain water tempered to 140 °F (60 °C) during normal and manual operation.

Extreme drain water cooling Drain water tempered to 120 °F (49 °C) during normal and manual operation.

Potable drinking water usage Compatible with standard potable water supplies.

Foam detection Standard foam detection and correction capability.

Advanced foam detection Advanced foam detection and correction capability.

Backflow prevention Integrated air gap in fill cup provides protection for supply water systems.

Extended fill cup Accommodates backpressure up to 10 in H20 (2.49 kPa).

Keep Warm function Provides improved humidifier response time.

Short cycling detection and correction

Prevents operational problems associated with seasonal shifts in humidity load.

O th er

C-UL-US Listed Certified to meet product standards as detailed by Underwrit-ers Laboratories.

OSHPD seismic certification Certified to meet OSHPD seismic requirements.

Warranty Provides guarantee against manufacturer defects. Refer to "Warranty".

Choice of steam distribution* Allows for distribution to the conditioned environment directly with the Nortec EL Space model, or indirectly through duct distributors.

Wall mounting Provides a convenient means of integrating humidification needs.

* The Nortec EL Space model includes a steam distributor.

8 Nortec EL Electrode Steam Humidifier 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

1.3 Options

Table 2 lists the options available for the Nortec EL humidifier. Detailed installation instructions are sup-plied with each option.

Table 2: Nortec EL Options

Option Availability

DescriptionFactory Installed

Field Install Kit

Built-on blower pack A blower pack is used to distribute steam generated by the humidifier directly into a conditioned environment. The Nortec EL Space model comes with a factory-installed blower pack and internal steam and condensate connec-tions. A remote-mounted blower pack is also available. Refer to "Blower Packs" on page 41 for more information.

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

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

Remote fault indication board Printed circuit board (PCB) with relay contacts for connect-ing remote status displays for “Unit On”, “Steam”, “Error” and “Service”. Refer to "Remote Fault Indication Board" on page 54.

Accessory board PCB with relay contacts for connecting other accessories such as fans and supply water flushing valves. Refer to "Ac-cessory Board" on page 55.

Factory-configured control settings

The humidifier can be factory-configured for the requested control signal acceptances. The humidifier can also be reconfigured in the field, as needed. Refer to Table 6 on page 13 for standard part numbers.

Internal primary fusing Internal fuse for heating voltage power supply. Only avail-able as a factory-installed option. Note: This is NOT a substitute for a dedicated external disconnect switch. Refer to Table 5 on page 12 for part numbers.

Fill cup extension Kit for extending the fill cup so the humidifier can accommo-date backpressure up to 10 in H20 (2.49 kPa).

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

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

BTL-certified BACnet MS/TP digital communications

PCB to provide BTL-certified BACnet MS/TP connectivity.

This option also enables full Master functionality when using BACnet MS/TP.

BTL-certified BACnet IP digital communications

PCB to provide BTL-certified BACnet IP connectivity.

LonWorks digital communica-tions

Supplementary board to provide LonWorks connectivity.

Spare steam cylinder Spare steam cylinders to ensure minimal downtime. Refer to Table 8 on page 24 for standard steam cylinders.

Remote blower pack power kit

Kit consists of a transformer, fusing, and a terminal block to supply power to the remote-mounted blower pack. Without this option, a separate 110-120 V supply must be supplied for the remote-mounted blower pack.

9Nortec EL Electrode Steam HumidifierNortec EL 2577597_E_EN_2008_Nortec-EL_EM

1.4 Accessories

Table 3 lists the accessories available for the Nortec EL humidifier. Detailed installation instructions are supplied with each accessory. Standard part numbers are also listed below.

Table 3: Nortec EL Accessories

Accessory Description

External condensate cooling Self-actuated and electric condensate waste water coolers are used to reduce waste water temperatures to below 140 °F (60 °C) before it is discharged into drains.

Steam distributor Steam distributors are used for adding steam into ventilation ducts. They are available in three different steam capacities and various lengths to suit duct dimensions.

Refer to Steam Distributor Installation Manual (document 2556592) for additional details and part numbers.

SAM-e and Mini SAM-e distribution manifolds

The SAM-e distribution manifolds are used for adding steam into ventilation ducts larger than 24 in (6 cm) where either higher steam capacity or short absorption distance is required. The Mini SAM-e is available in dimensions under 24 in (61 cm). They are available in a range of sizes and steam capacities to match duct and humidifier requirements.

Refer to SAM-e Engineering Manual (document 1503529) for additional details and part numbers.

Remote blower pack Blower packs are used for direct humidification of the conditioned environment. Blower packs are capable of distributing up to 100 lb/h (45 kg/h), should be selected to match or exceed humidifier capacity.

Refer to Blower Pack Installation, Operation and Maintenance Manual (document 2582277) for additional details.

On/Off humidistats Condair offers a range of digital and mechanical On/Off duct and wall-mounted humidistats for use with control and high limit applications. Refer to Table 7 on page 13.

Modulating humidistats Condair offers a range of digital modulating duct and wall-mounted humidistats for use with control and high limit applications. Refer to Table 7 on page 13.

Outdoor temperature sensors Provides automatic humidistat setpoint reduction to prevent condensation on windows/sur-faces adjacent to outdoor air. Refer to "Outdoor Temperature Setback" on page 52 for additional details.

2520263 – Duct-mounted temperature sensor 2553858 – Outdoor mounted temperature sensor

Humidity transducers Condair offers a range of digital humidity sensors for duct and wall-mounting for use with control and high limit applications. Refer to Table 7 on page 13.

Air proving switch Provides a mechanical differential pressure switch to enable humidifier operation when there is airflow through the ventilation ducts. Adjustable for pressures 0.05-12 in H2O (0.01-

2.99 kPa). Refer to "Air Proving Switch" on page 51 for additional details.

Steam line reducers Provides a means of adapting steam line diameters to match the diameter of the steam distributor.

1507846 – Steam line reducer (1-3/4 in to 7/8 in) copper 1508165 – Steam line reducer (1-3/4 in to 7/8 in) stainless steel

Condair flexible steam and condensate hose

Steam hoses can be used as steam distribution lines or as couplers between copper or stainless steel steam distribution lines. When used for steam distribution the maximum rec-ommended hose length is 10 ft (3 m). Steam hose is available in two sizes.

Condensate hose can be used for draining condensate, or coupling to copper or stainless steel condensate lines.

1328810 – Steam hose (7/8 in I.D.) per foot (30 cm) 1328820 – Steam hose (1-3/4 in I.D.) per foot (30 cm) 1328840 – Condensate hose (3/8 in I.D.) per foot (30 cm)

Large/small condensate trap tee

Condensate trap tee must be used to remove condensate that forms in steam distribution lines. Condair offers tees to match large and small steam lines.

1329634 – Condensate trap tee – small (7/8 × 7/8 × 3/8 in) 1329635 – Condensate trap tee – large (1-3/4 × 1-3/4 × 3/8 in)

In-line water filter and re-placement filter elements

In-line water filter to remove sediments in the supply water that can obstruct the fill valve strainer or drain fittings.

1329505 – In-line water filter (5 micron) 1329561 – Replacement filter elements (1 micron) 1329506 – Replacement filter elements (5 micron)

10 Nortec EL Electrode Steam Humidifier 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

Table 3: Nortec EL Accessories, continued...

Accessory Description

Condensate pump High temperature condensate pump for pumping waste water from the Nortec EL or con-densate from the distributor systems.

1429527 – Drain water sump pump, low flow 2524504 – Electric sump pump, medium flow 2576898 – Electric sump pump, high flow

Drain air gap reducer All Nortec EL humidifiers require an air gap in the drain line as close as possible to the hu-midifier. The air gap reducer is a 2-1/2 in to 7/8 in (63.5 mm to 22 mm) fitting that can provide the required air gap.

2522172 – External drain air gap reducer

Pocket hygro-thermometer digital display

The pocket hygro-thermometer provides a means to check the humidity and temperature in a space. It is a useful tool for troubleshooting humidity problems.

1469595 – Pocket hygro-thermometer digital display

Transformer, plug-In, 120 VAC to 24 VAC

“Wall Wart” AC adaptor 120 VAC to 24 VAC, 40 VA for providing power to remote electronics/ controls.

1603032 – Transformer, plug-In, 120 VAC to 24 VAC

1.5 Humidifier Components

Figure 2 shows the various components of the Nortec EL humidifier. The door panels have been removed for clarity.

Figure 2:

171819

Nortec EL Humidifier Components (Medium Size Model Shown)

11Nortec EL Electrode Steam HumidifierNortec EL 2577597_E_EN_2008_Nortec-EL_EM

The Nortec EL humidifier housing contains two cabinets – the plumbing cabinet (on the left) and the controls cabinet (on the right) – refer to Figure 2 on page 10. Table 4 summarizes the functions of the main components in these two cabinets.

Table 4: Nortec EL Humidifier Component Functions

Component Function Pl um bi ng c ab in et

Steam cylinder Water reservoir in which boiling takes place. It houses a set of electrodes that are used to boil the water. It has a steam outlet at the top, and a water inlet/outlet at the bottom.

Electrode plug Insulated connector that feeds electric current to the electrodes housed in the steam cylinder.

High water sensor Detects maximum water level in the steam cylinder.

Drain canal Combined drain outlet for discharge from the steam cylinder, and overflow from the fill cup.

Drain valve Controls the flow of feed water from the fill cup into the steam cylinder, and drain wa-ter out of the steam cylinder. The stem of the steam cylinder (which houses its water inlet/outlet) fits into the valve body.

Fill cup Provides a gravity feed means to fill the steam cylinder through the drain valve. A built-in air gap prevents backflow.

Fill valve Controls the flow of feed water into the fill cup.

Fill cup extension (optional) Optional kit for extending the fill cup so the humidifier can accommodate backpressure up to 10 in H2O (2.49 kPa).

Extreme drain water cooling valve (optional)

Optional kit for cooling the drain water to less than 120 °F (49 °C) before it is dis-charged into the drain.

Foam detection kit (optional) Optional kit for extending the ability of the humidifier to operate with a wider range of water quality.

C on tr ol s ca bi ne t

High voltage terminal block Primary power connection from the external disconnect switch to the humidifier.

Contactor Activates/deactivates power to the electrodes in the steam cylinder.

Driver board Provides input and output connections to the humidifier components.

Integrated control board Controls all functions of the humidifier, and provides a user interface through the inte-grated touchscreen display. It also permits connection to multiple humidifiers, as well as to the BMS. An on-board USB port also permits exchange of data.

Touchscreen display User interface to monitor and control the humidifier.

On/Off switch Allows the user to turn the humidifier On and Off.

Low voltage terminal strip Terminal strip for connecting control signal inputs to the humidifier.

Remote fault indication PCB Optional printed circuit board with dry contacts to connect remote status displays for "Unit On", "Steam", "Error" and "Service".

Accessory relay PCB (not shown)

Optional printed circuit board with dry contacts to enable/disable other accessories such as fans and supply water flushing valves.

Transformer Steps down primary voltage to 24 VAC to power the on-board low voltage electronics.

12 Nortec EL Electrode Steam Humidifier 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

Part numbers and quantities for ordering Nortec EL options are shown in Table 5.

Table 5: Nortec EL Options, Part Number Matrix

Voltage and Phase

Steam Capacity lb/h (kg/h)

Part Number and Quantity Remote

Fault Indication

Board

Accessory Board

Mounting Bar

Mounting Rack

Fill Cup Extension

Extreme Drain Water

Cooling

Power Kit

– Remote

Blower Pack

Built-on Blower Pack

Advanced Foam

Detection

Internal Primary

Fuse

120 V, 1 Ph. 5 (2.2) RFI ×1 ACC ×1 MP-S ×1 MR-S ×1 OPS ×1 DWC0.5 ×1 BPP-SM ×1 BOBP ×1 FD ×1 FK1-1 ×1

208 V, 1 Ph.

10 (4.5)

RFI ×1 ACC ×1 MP-S ×1 MR-S ×1 OPS ×1 DWC0.5 ×1 BPP-SM ×1 BOBP ×1 FD ×1

FK1-1 ×1

20 (9) FK1-3 ×1

220-240 V, 1 Ph.

10 (4.5)

RFI ×1 ACC ×1 MP-S ×1 MR-S ×1 OPS ×1 DWC0.5 ×1 BPP-SM ×1 BOBP ×1 FD ×1

FK1-1 ×1

20 (9)

277 V, 1 Ph.

10 (4.5)

RFI ×1 ACC ×1 MP-S ×1 MR-S ×1 OPS ×1 DWC0.5 ×1 BPP-SM ×1 BOBP ×1 FD ×1

20 (9)

380 V, 1 Ph.

10 (4.5)

RFI ×1 ACC ×1 MP-S ×1 MR-S ×1 OPS ×1 DWC0.5 ×1 BPP-SM ×1 BOBP ×1 FD ×1

FK1-2 ×1

20 (9)

440-480V, 1 Ph.

10 (4.5)

RFI ×1 ACC ×1 MP-S ×1 MR-S ×1 OPS ×1 DWC0.5 ×1 BPP-SM ×1 BOBP ×1 FD ×1

20 (9)

550-600V, 1 Ph.

10 (4.5)

RFI ×1 ACC ×1 MP-S ×1 MR-S ×1 OPS ×1 DWC0.5 ×1 BPP-SM ×1 BOBP ×1 FD ×1

20 (9)

208 V, 3 Ph.

20 (9)

RFI ×1 ACC ×1

MP-S ×1 MR-S ×1

OPS ×1

DWC0.5 ×1

BPP-SM ×1 BOBP ×1 FD ×1

FK3-1 ×1

30 (14) DWC1.2 ×1

50 (23)

MP-M ×1 MR-M ×1

DWC2.0 ×1

FK3-3 ×1

75 (34)

FK3-5 ×1

100 (45) DWC3.3 ×1

150 (68)

MP-L ×1 MR-L ×1 OPS ×2

DWC2.0 ×2

BPP-L ×1 – FD ×2 FK3-6 ×1

200 (91) DWC3.3 ×2

220-240 V, 3 Ph.

20 (9)

RFI ×1 ACC ×1

MP-S ×1 MR-S ×1

OPS ×1

DWC0.5 ×1

BPP-SM ×1 BOBP ×1 FD ×1

FK3-1 ×1

30 (14) DWC1.2 ×1

50 (23)

MP-M ×1 MR-M ×1

DWC2.0 ×1

FK3-3 ×1

75 (34)

FK3-5 ×1

100 (45) DWC3.3 ×1

150 (68)

MP-L ×1 MR-L ×1 OPS ×2

DWC2.0 ×2

BPP-L ×1 – FD ×2 FK3-6 ×1

200 (91) DWC3.3 ×2

380 V, 3 Ph.

20 (9)

RFI ×1 ACC ×1

MP-S ×1 MR-S ×1

OPS ×1

DWC0.5 ×1

BPP-SM ×1 BOBP ×1 FD ×1

FK3-2 ×1

30 (14) DWC1.2 ×1

50 (23)

MP-M ×1 MR-M ×1

DWC2.0 ×1

FK3-4 ×175 (34)

100 (45) DWC3.3 ×1

150 (68)

MP-L ×1 MR-L ×1 OPS ×2

DWC2.0 ×2

BPP-L ×1 – FD ×2 FK3-7 ×1

200 (91) DWC3.3 ×2

440-480 V, 3 Ph.

20 (9)

RFI ×1 ACC ×1

MP-S ×1 MR-S ×1

OPS ×1

DWC0.5 ×1

BPP-SM ×1 BOBP ×1 FD ×1

FK3-2 ×1

30 (14) DWC1.2 ×1

50 (23)

MP-M ×1 MR-M ×1

DWC2.0 ×1

FK3-4 ×175 (34)

100 (45) DWC3.3 ×1

150 (68)

MP-L ×1 MR-L ×1 OPS ×2

DWC2.0 ×2

BPP-SM ×1 – FD ×2 FK3-7 ×1

200 (91) DWC3.3 ×2

550-600 V, 3 Ph.

20 (9)

RFI ×1 ACC ×1

MP-S ×1 MR-S ×1

OPS ×1

DWC0.5 ×1

BPP-SM ×1 BOBP ×1 FD ×1

FK3-2 ×1

30 (14) DWC1.2 ×1

50 (23)

MP-M ×1 MR-M ×1

DWC2.0 ×1

FK3-4 ×175 (34)

100 (45) DWC3.3 ×1

150 (68)

MP-L ×1 MR-L ×1 OPS ×2

DWC2.0 ×2

BPP-L ×1 – FD ×2 FK3-7 ×1

200 (91) DWC3.3 ×2

13Nortec EL Electrode Steam HumidifierNortec EL 2577597_E_EN_2008_Nortec-EL_EM

Part numbers for ordering control signal configurations for the Nortec EL humidifier are shown in Table 6.

Table 6: Nortec EL Control Signal Acceptance Part Numbers

Signal Standard Part Numbers – Demand Signal

Acceptance Standard Part Numbers – Transducer

Signal Acceptance

Single Channel Dual Channel Single Channel Dual Channel

0-5 VDC 2523060 2523061 2523100 2523101

0-20 mA 2523062 2523063 2523102 2523104

4-20 mA 2523064 2523065 2523105 2523107

0-10 VDC 2523066 2523089 2523110 2523111

0-16 VDC 2523090 2523091 2523112 2523113

1-5 VDC 2523092 2523093 2523114 2523115

2-10 VDC 2523094 2523094 2523116 2523117

0-20 VDC 2523096 2523097 2523118 2523119

Part numbers for ordering other accessories are shown in Table 7.

Table 7: Humidistat Part Numbers

Part Number

Demand Transducer Digital Mechanical 0-10 VDC 2-10 VDC On/Off Fan StartDuct-mounted Wall-mounted Duct-mounted Wall-mounted

2548732 – – – – – –

2548731 – – – – – –

2520273* – – – – – –

1510142 – – – – – –

2520266* – – – – – –

1329102 – – – – – – –

1329108 – – – – – – –

1509858 – – – – – – –

1509857 – – – – – – –

* Remote-mounted digital controller included for ease of access.

14 Nortec EL Electrode Steam Humidifier 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

1.6 User Interface

The Nortec EL humidifier has an interactive touchscreen display which can be used to configure and monitor its operation. Refer to Figure 3.

In addition, the unit can also be configured and monitored remotely using the built-in BMS connectivity (BACnet, Modbus).

Figure 3:

Nortec EL User Interface

15OperationNortec EL 2577597_E_EN_2008_Nortec-EL_EM

2 Operation

2.1 General

The Nortec EL humidifier produces pure steam at a variable output rate of 25-100% of its rated capac-ity, to within a tolerance of ±5%. It employs the following general principle to generate steam – when water in the steam cylinder makes contact with energized electrodes, electric current flows between the electrodes through the water. The resistance to the flow of electrical current heats the water and turns it into steam. The amount of heat generated is controlled by regulating the current draw.

Two factors affect the current draw:

• Surface area of the electrode in contact with the water – the current draw increases as more of the electrode is in contact with the water.

• Total dissolved solids (TDS) in the water – higher TDS results in increased conductivity of the water, but when the concentration level reaches a saturation point the current draw begins to level off. Low TDS may prevent proper operation of the unit.

The fill valve stops filling the steam cylinder when the current draw reaches the optimal level (Fill Off Amps) for the requested level of humidity. As the water continues to heat and evaporate, the current draw starts to drop off as less electrode is exposed to the water. When the current draw drops down to 80% of the Fill Off Amps level, the fill valve starts filling the cylinder. Refer to Figure 4. The humidifier continues this cycle to fulfil the humidity demand.

Figure 4:

Drain

Time

C u rr e n t L e v e l

Filling Off

Filling On

Boil-down

(optimal)

Fill Boil-down

(fast)

Humidifier Fill-Boil-Drain Operation

As boiling continues, the concentration of TDS increases in the cylinder. This causes the current draw to increase, which results in faster boil-down time. To maintain efficiency, the Nortec EL humidifier utilizes the Auto-adaptive Control algorithm (refer to "Drain Cycles" on page 18) based upon the trending boil-down cycles to perform a drain cycle in order to maintain the concentration of TDS at an optimum level. This algorithm permits better adaptation to various water conditions and ensures that the steam cylinder is only drained when necessary, thus minimizing wastage of water and maintaining optimum operating conditions.

If the unit is not operated for three days, the humidifier drains automatically to prevent growth of organic matter in the steam cylinder.

Eventually, the minerals dissolved in the water build up as scale deposits on the electrodes, which reduces its efficiency and shortens the cylinder life (refer to "Steam Cylinders" on page 20 for additional details). When this happens, the steam cylinder is easily removed and replaced.

16 Operation 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

2.2 Sequence of Operation

The following is a general sequence of operation – the actual sequence may vary depending upon op-erating conditions and user-configurable parameters. Refer to Figure 5 on page 17.

1. When the humidifier receives a valid humidity demand signal, the contactor(s) closes and directs power to the electrodes in the steam cylinder(s).

2. The current sensor on the driver board then monitors the current draw for 60 seconds.

If the current draw is less than the optimal current draw for the requested level of humidity, and the high water sensor is not activated, the operating sequence continues to step 3. If the high water sen-sor is activated, the operating sequence skips to step 4.

If the measured current draw is higher than the optimal current draw for the requested level of hu-midity, but does not exceed 115% of the Full Load Amps (Full Load Amps is the current draw at the full rated capacity of the unit), the operating sequence skips to step 5.

3. The humidifier displays the status message “Filling” and activates the fill valve, which causes feed water to flow through the fill valve into the fill cup. The water then flows from the fill cup into the steam cylinder through the stem at the bottom of the cylinder.

As soon as the electrodes come in contact with the water, current begins to flow between the elec-trodes, generating heat. As the water level continues to rise, more surface of the electrodes come in contact with the water, which results in a higher current draw. The fill valve remains open until the current draw matches the optimal current draw for the requested level of humidity, or the high water sensor is activated.

4. Once the fill/drain cycles stop, the water in the cylinder continues to heat until it turns into steam.

As water level in the steam cylinder drops due to evaporation, the surface area of the electrodes exposed to the conductive water is also reduced, which results in a lower current draw.

If the filling cycle in step 3 was interrupted by activation of the high water sensor, the operating se-quence returns to step 2 once the water level drops below the high water sensor pin. Otherwise, it continues onto step 5.

5. As the humidifier continues to operate, the current draw begins to decrease due to a combination of two factors related to evaporation – reduced surface area of electrodes in contact with the water, and the increased concentration of TDS in the water. To offset this, the control software measures the time for the current draw to decrease across a predetermined threshold (refer to "Drain Cycles" on page 18), and performs the following action:

a. If the time for the boil-down cycle is shorter than optimal, the Auto-adaptive Control algorithm initiates a drain cycle to replace some of the concentrated water in the steam cylinder with fresh water in order to lower the concentration levels of TDS. The fill valve is active during this drain cycle to lower the temperature of the waste water to below 140 °F (60 °C).

b. If the time for the boil-down cycle is optimal or longer, the humidifier does not perform a drain cycle to lower the concentration levels of TDS.

6. The operating sequence loops back to step 2 and continues steam production as long as there is a valid humidity demand signal.

17OperationNortec EL 2577597_E_EN_2008_Nortec-EL_EM

Figure 5:

P E

P E

S C

S

C

N L1

INLETSPARE/DRAIN CONTACT.

C O

N T.

S

IG

N

G N

D

IN

V +24

V

V

CONT.DRAIN INLET

L1FU L1SWN

LE

V

E L

S E

N S

M A

IN

S

U P

P

LY

M O

D U

LE

B

P E

P

N P

LI

M

. S

IG

N

G N

D

IN

F3

A T

SPARE

SWITCH

L1SC NSWL1SC NSWL1SW NSWL1SW

F1 1AT

COMM

H B

O K

JP

JP

LE

V

E L

LO

W

V

G N

D

C U

R R

E N

T S

E N

S O

R

SC OK

H W

S B

LO

W E

R IN

V

O N

/O F

F IN

V

SPARE1 SPARE2 T1

D+GND D-GND24V D+GND D-

RS4852RS4851PWR IC

S W

1 1 1

Q C

Q C

X13 X14 X15

X

X

X

X

X

X

X2X4 X5X6

DRIVER

BOARD A

L1

T1T2T3

L2L3

Humidifier Schematic

18 Operation 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

2.3 Drain Cycles

Minerals dissolved in the water can accumulate in the steam cylinder over time and reduce its efficiency and shorten cylinder life. To minimize this, the Nortec EL humidifier utilizes the Auto-adaptive Control algorithm to initiate a drain cycle that dilutes the concentration of mineral in the cylinder only when re-quired, and only drains a minimum volume of water to maintain optimal operating conditions.

2.3.1 Drain Cycle Activation

Once the humidifier has achieved the desired current draw, the water in the cylinder will evaporate reduc-ing the water level, and therefore the current draw. This reduction in current draw will happen at different speeds depending upon the conductivity and volume of the water. More dissolved minerals will reduce the resistance of the water and allow for a smaller volume of water to maintain the same heat production/ evaporation rate as a larger volume of lower conductivity water. The water level change associated with evaporating the smaller volume of more conductive water will have a greater impact on current draw, and therefore reduce the current draw faster with higher conductivity water. The integrated control board monitors the time required for the current draw to cross a pre-determined threshold.

• If the Actual Time (Ta) for the boil-down across the predetermined thresholds is longer than the pre-determined Optimal Time (To), it indicates that the water has not yet accumulated excessive amounts of minerals, and hence a mineral dilution drain is not yet required.

• If the Actual Time (Ta) is shorter than a predetermined Optimal Time (To) it indicates that the water has accumulated an excessive amount of dissolved minerals, and hence a demineralization drain is initiated. Refer to Figure 6.

Figure 6:

A

B

T = T a o

T > T a o

T < T a o

Drain

Optimal

Conductivity

Low

Conductivity

High

Conductivity

Time

C u rr e n t a n d

W a te r

L e v e l

Conductivity Measurement

19OperationNortec EL 2577597_E_EN_2008_Nortec-EL_EM

2.3.2 Drain Volume

The volume of water that must be drained is calculated by the Auto-adaptive Control algorithm. This algorithm establishes a proportional drain component based on the difference between the actual time of the latest boil-down cycle (Ta) minus an optimal time (To). It then adds an integral drain component accumulated from previous drain cycles that will increase or decrease subsequent drain cycles, ensuring more stable prolonged operation.

In cases where a long drain is required the Auto-adaptive Control algorithm breaks the drain time down into several small drains to prevent a reduction in the humidifier output capacity, that would otherwise result from a long drain. During these multiple partial drains, the fill valve is energized to assist in reduc-ing the drain water temperature below 140 °F (60 °C), and at the same time the drain valve is energized.

Refer to Figure 7.

Figure 7:

A

B

T < T a o

– Drain

High

Conductivity

– Fill

Time

C u rr e n t a n d

W a te r

L e v e l

Multiple Short Drains

20 Operation 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

2.4 Steam Cylinders

The steam cylinder is the water reservoir for the humidifier. It consists of a plastic canister with a steam outlet, water inlet/outlet with strainer, separators and mounts for various electrodes to be immersed into the water. The Nortec EL humidifier ships with the standard cylinder listed in Table 8 on page 24, Table 9 on page 26 and Table 10 on page 27. The standard cylinder has been developed for optimum performance in the conductivity range of most potable water systems 330-670 µSiemens/cm (µS/cm). If required, the humidifier can be easily adapted to operate with water conductivities outside this ideal range. This allows for operation with a total range of 150-1200 µS/cm.

Consult your local Condair representative for details on adapting the humidifiers operation to accom-modate water conductivity outside the standard operating range.

Low Conductivity Cylinder For improved operation using potable water between 150 and 330 µS/cm, select a lower conductivity cylinder. Note: An alternate for the 200 series cylinders is not available for units operating at 208-277 V.

High Conductivity Cylinder For improved operation on potable water between 670 and 1200 µS/cm, select a higher conductivity cylinder. Note: An alternate steam cylinder is not available for units operating at 480-600 V.

2.4.1 Water Conditions Versus Cylinder Life

The atmospheric steam output of the humidifier is pure and clean steam. During operation, the dissolved minerals in the water supply are left behind in the cylinder. Much of these minerals will be removed during periodic drain cycles of the cylinder (for drain frequencies refer to "Drain Cycles" on page 18).

Figure 8 generalizes the effect of water hardness, and demand on cylinder life. Cylinder life is ultimately determined by the water chemistry, the unit running time, and steam output capacity setting.

Figure 8:

0%

Average Operating Hours Note: Other parameters may affect cylinder life.

500 1000 2000 4000 8000

Gr ain s o f H ar dn es s

Ca

CO

m g/

L (p pm

Cylinder Life Expectancy Capacity adjustment setting

100% 50% 25%

Electrode Drain Rate vs.

Water Conductivity with Auto-Adaptive Control

Co nd uc tiv ity o f W at er

S/ cm μ

To ta l D iss ol ve d So lid s ( pp m

20% 40% 60% 80% 100%

(As a percentage of steam output) Drain Rate

Water Conditions vs. Steam Cylinder Life and Drain Rates

21OperationNortec EL 2577597_E_EN_2008_Nortec-EL_EM

2.4.2 Output Versus Cylinder Life

The Nortec EL humidifier maintains full output capacity for the full life of the cylinder. Figure 9 illustrates the expected end-of-cylinder-life performance. As minerals build up on the electrodes in the cylinder, the patented Auto-adaptive Control algorithm automatically raises the water level slightly in the cylinder. This exposes fresh electrode surface to water and maintains peak output and efficiency from the humidifier.

Once the electrode surface is completely electrically insulated, the user is alerted to replace the cylinder.

The performance of other competitive humidifiers may degrade gradually as the minerals adhere to the cylinder. By increasing the water level to expose fresh electrode surface, the Nortec EL humidifier will maintain maximum output throughout its cylinder life.

Figure 9:

Replace 0%

New

Pe rc en t o f F ul l S te am O ut pu t

20%

40%

60%

80%

100%

Cylinder Life

¼½¾

Humidifiers maintain full output throughout its life .

Typical output of other competitive humidifiers. Ability to produce steam decreases throughout its life.

Steam Output vs. Steam Cylinder Life

22 Operation 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

This page intentionally left blank

23Product SpecificationsNortec EL 2577597_E_EN_2008_Nortec-EL_EM

3 Product Specifications

3.1 Model Specifications

3.1.1 Model Designation

The specification label on the side (and the underside) of the Nortec EL humidifier shows its model number, serial number and ratings – refer to Figure 2 on page 10. The breakdown of the model number is shown in Figure 10.

Figure 10:

Nortec EL 100 480V/3~Space

Product series:

Steam capacity (lb/h):

Model:

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

Heating voltage and phase:

Model Number Breakdown

24 Product Specifications 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

3.1.2 Nortec EL Specifications

The Nortec EL humidifier is available in a range of output capacities, voltages and configurations. Refer to Table 8 on page 24 for the Nortec EL (Duct) specifications, Table 9 on page 26 for the Nortec EL Space specifications, and Table 10 on page 27 for Nortec EL RM specifications.

In addition, the short-circuit current rating (SCCR) for all Nortec EL humidifiers is 5 kA. With the internal primary fusing option (refer to Table 2 on page 8), the SCCR is 100 kA.

Table 8: Nortec EL Specifications

Phase Steam

Capacity lb/h (kg/h)

Voltage V

Amperage A

Maximum External

Fuse A

Wattage kW

Standard Steam

Cylinder

Fill Rate gpm

(L/min)

Drain Rate gpm

(L/min)

Net/Full Oper-ating Weight lb (kg)

Single- Phase

5 (2.2) 110-120 15.6 20 1.9

0.2 (0.8) 1.6 (6.1)

45/55 (21/25)10 (4.5)

208 18.0 25 3.7

220-240 15.6 20 3.7

277 13.5 20 3.7

380 9.0 15 3.7 203

440-480 7.8 15 3.7

550-600 6.2 15 3.7

20 (9)

208 36.0 45 7.5

45/65 (21/30)

220-240 31.2 40 7.5

277 27.0 35 7.5

380 18.0 25 7.5 305

440-480 15.6 20 7.5

550-600 12.5 20 7.5

Three- Phase

20 (9)

208 20.8 25 7.5

220-240 18.0 25 7.5

380 10.4 15 7.5

311440-480 9.0 15 7.5

550-600 7.2 15 7.5

30 (14)

208 31.1 40 11.2

0.3 (1.2)

1.7 (6.4)

45/80 (21/37)

220-240 27.0 35 11.2

380 15.6 20 11.2 407

440-480 13.5 20 11.2

550-600 10.8 15 11.2

50 (23)

208 51.9 70 18.7

0.5 (2.0)

2.0 (7.6)

85/150 (39/68)

220-240 45.0 60 18.7

380 26.0 35 18.7 603

440-480 22.5 30 18.7

550-600 18.0 25 18.7

75 (34)

208 77.9 100 28.1

220-240 67.5 90 28.1

380 39.0 50 28.1 603

440-480 33.7 45 28.1

550-600 27.0 35 28.1

100 (45)

208* 93.4 125 33.7

0.9 (3.3)

2.3 (8.7)

220-240 90.0 125 37.4

380 52.0 70 37.4 603

440-480 45.0 60 37.4

550-600 36.0 45 37.4

25Product SpecificationsNortec EL 2577597_E_EN_2008_Nortec-EL_EM

Table 8: Nortec EL Specifications, continued...

Phase Capacity lb/h (kg/h)

Voltage V

Amperage A

Maximum External

Fuse A

Wattage kW

Standard Steam

Cylinder

Fill Rate gpm

(L/min)

Drain Rate gpm

(L/min)

Net/Full Oper-ating Weight lb (kg)

Three- Phase

150 (68)

208 155.7 200 56.1

0.5** (2.0**)

2.0** (7.6**)

120/245 (55/112)

220-240 135.0 175 56.1

380 78.0 100 56.1 603

440-480 67.5 90 56.1

550-600 54.0 70 56.7

200 (91)

208*** 186.9 250 67.3

0.9** (3.3**)

2.3** (8.7**)

220-240 180.0 225 74.8

380 104.1 150 74.8 603

440-480 90.0 125 74.8

550-600 72.0 90 74.8

26 Product Specifications 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

Table 9: Nortec EL Space Specifications

Phase Capacity lb/h (kg/h)

Voltage V

Amperage A

Maximum External

Fuse A

Wattage kW

Standard Steam

Cylinder

Fill Rate gpm

(L/min)

Drain Rate gpm

(L/min)

Net/Full Oper-ating Weight lb (kg)

Single- Phase

5 (2.2) 110-120 16.8 25 2.0

0.2 (0.8) 1.6 (6.1)

83/93 (38/42)10 (4.5)

208 18.7 25 3.9

220-240 16.2 25 3.9

277 14.0 20 3.9

380 9.4 15 3.9 203

440-480 8.1 15 3.9

550-600 6.5 15 3.9

20 (9)

208 36.7 50 7.6

83/103 (38/47)

220-240 31.8 40 7.6

277 27.5 35 7.6

380 18.4 25 7.6 305

440-480 15.9 20 7.6

550-600 12.7 20 7.6

Three- Phase

20 (9)

208 21.5 30 7.7

220-240 18.6 25 7.7

380 10.8 15 7.7

311440-480 9.3 15 7.7

550-600 7.4 15 7.7

30 (14)

208 31.9 40 11.5

0.3 (1.2)

1.7 (6.4)

83/118 (38/54)

220-240 27.6 35 11.5

380 16.0 20 11.5 407

440-480 13.8 20 11.5

550-600 11.0 15 11.5

50 (23)

208 52.6 70 19.0

0.5 (2.0)

2.0 (7.6)

123/188 (56/85)

220-240 45.6 60 19.0

380 26.4 35 19.0 603

440-480 22.8 30 19.0

550-600 18.2 25 19.0

75 (34)

208 78.6 100 28.3

220-240 68.1 90 28.3

380 39.4 50 28.3 603

440-480 34.1 45 28.3

550-600 27.2 35 28.3

100 (45)

208* 94.2 125 33.9

0.9 (3.3)

2.3 (8.7)

220-240 90.6 125 37.7

380 52.4 70 37.7 603

440-480 45.3 60 37.7

550-600 36.2 50 37.7

* Steam capacity for Nortec EL Space 100 unit running on 208V/3~ is 90 lb/h (41 kg/h)

27Product SpecificationsNortec EL 2577597_E_EN_2008_Nortec-EL_EM

Table 10: Nortec EL RM Specifications

Phase Capacity lb/h (kg/h)

Voltage V

Amperage A

Maximum External

Fuse A

Wattage kW

Standard Steam

Cylinder

Fill Rate gpm

(L/min)

Drain Rate gpm

(L/min)

Net/Full Oper-ating Weight lb (kg)

Single- Phase

5 (2.2) 110-120 16.8 25 2.0

0.2 (0.8) 1.6 (6.1)

45/55 (21/25)10 (4.5)

208 18.7 25 3.9

220-240 16.2 25 3.9

277 14.0 20 3.9

380 9.4 15 3.9 203

440-480 8.1 15 3.9

550-600 6.5 15 3.9

20 (9)

208 36.7 50 7.6

45/65 (21/30)

220-240 31.8 40 7.6

277 27.5 35 7.6

380 18.4 25 7.6 305

440-480 15.9 20 7.6

550-600 12.7 20 7.6

Three- Phase

20 (9)

208 21.5 30 7.7

220-240 18.6 25 7.7

380 10.8 15 7.7

311440-480 9.3 15 7.7

550-600 7.4 15 7.7

30 (14)

208 31.9 40 11.5

0.3 (1.2)

1.7 (6.4)

45/80 (21/37)

220-240 27.6 35 11.5

380 16.0 20 11.5 407

440-480 13.8 20 11.5

550-600 11.0 15 11.5

50 (23)

208 52.6 70 19.0

0.5 (2.0)

2.0 (7.6)

85/150 (39/68)

220-240 45.6 60 19.0

380 26.4 35 19.0 603

440-480 22.8 30 19.0

550-600 18.2 25 19.0

75 (34)

208 78.6 100 28.3

220-240 68.1 90 28.3

380 39.4 50 28.3 603

440-480 34.1 45 28.3

550-600 27.2 35 28.3

100 (45)

208* 94.2 125 33.9

0.9 (3.3)

2.3 (8.7)

220-240 90.6 125 37.7

380 52.4 70 37.7 603

440-480 45.3 60 37.7

550-600 36.2 50 37.7

28 Product Specifications 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

Table 10: Nortec EL RM Specifications, continued...

Phase Capacity lb/h (kg/h)

Voltage V

Amperage A

Maximum External

Fuse A

Wattage kW

Standard Steam

Cylinder

Fill Rate gpm

(L/min)

Drain Rate gpm

(L/min)

Net/Full Weight lb (kg)

Three- Phase

150 (68)

208 156.9 200 56.5

0.5** (2.0**)

2.0** (7.6**)

120/245 (55/112)

220-240 136.0 175 56.5

380 78.6 100 56.5 603

440-480 68.0 90 56.5

550-600 54.4 70 56.5

200 (91)

208*** 188.1 250 67.8

0.9** (3.3**)

2.3** (8.7**)

220-240 181.0 250 75.2

380 104.7 150 75.2 603

440-480 90.5 125 75.2

550-600 72.4 100 75.2

29Product SpecificationsNortec EL 2577597_E_EN_2008_Nortec-EL_EM

3.2 Specification Drawings

Figure 11:

EL Small (005 to 030) Physical Data & Dimensions Rev A 22-Oct-2015

Empty Weight 45 lbs

Full Weight 55 lbs

Front Clearance 36 in.

Ceiling Clearance 12 in.

Left/Right Clearance 0 in.

Floor Clearance 24 in.

Water Inlet Pressure 30-80 psig

ALL UNITS IN INCHES (mm)

Mounting Keyhole 2x0.25 (6.5)

Primary Power

Drain Connection

1.18 (30)

Fill Connection

1/2 NPT

Optional, Steam Outlet (Cylinder)

0.875 (22)

Condensate Return

0.375 (9.5)

Optional Mounting Bracket

12.0 ( 305 )

3.2 ( 80 )

14.3 ( 364 )

14.5 ( 369 )

3.6 ( 91 ) 2.8

( 72 )

1.7 ( 42 )

14.3 ( 364 )

17.6 ( 446 )

13.0 ( 329 )

9.1 ( 230 )

26.426.4 (( 670670 ))

16.5 ( 420 )

2.1 ( 54 )

2.2 ( 56 )

8.3 ( 211 )

.6 ( 14 )

13.2 ( 336 )

.3 ( 8 )

2.1 ( 54 )

11.7 ( 296 )

7.6 ( 194 )

2.3 ( 58 )

2.3 ( 58 )

12.0 ( 305 )

Nortec EL 005-030 Physical Data and Dimensions

30 Product Specifications 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

Figure 12:

EL Medium (050 to 100) Physical Data & Dimensions Rev A 22-Oct-2015

Empty Weight 85 lbs

Full Weight 150 lbs

Front Clearance 36 in.

Ceiling Clearance 12 in.

Left/Right Clearance 0 in.

Floor Clearance 24 in.

Water Inlet Pressure 30-80 psig

Drain Connection

1.18 (30)

Fill Connection

1/2 NPT

Primary Power

Mounting Keyhole 2x0.25 (6.5)

Optional, Steam Outlet (Cylinder)

1.75 (45)

Condensate Return

0.375 (9.5)

Optional Mounting Bracket

20.9 ( 530 )

16.0 ( 406 )

3.5 ( 89 )

20.7 ( 526 ))

15.7 ( 400 )

2.4 ( 62 )

1.3 ( 32 )

15.7 ( 400 )

30.7 (( 780 )

13.8 ( 351 )

17.6 ( 446 )

2.1 ( 54 )

14.9 ( 380 )

9.2 ( 233 )

18.9 ( 479 )

3.6 ( 91 )

17.6 ( 446 )

16.0 ( 406 )

2.4 ( 62 )

7.6 ( 194 ))

1.4 ( 36 )

.6 ( 15 )

8.9 ( 226 )

2.1 ( 54 )

.3 ( 8 )

ALL UNITS IN INCHES (mm) Nortec EL 050-100 Physical Data and Dimensions

31Product SpecificationsNortec EL 2577597_E_EN_2008_Nortec-EL_EM

Figure 13:

EL Large (150 to 200) Physical Data & Dimensions Rev A 22-Oct-2015

Empty Weight 120 lbs

Full Weight 245 lbs

Front Clearance 36 in.

Ceiling Clearance 12 in.

Left/Right Clearance 0 in.

Floor Clearance 24 in.

Water Inlet Pressure 30-80 psig

ALL UNITS IN INCHES (mm)

Condensate Return � 0.375 (9.5) x 2

Mounting Keyhole 3x0.25 (6.5) �

Optional, Steam Outlet (Cylinder)

1.75 (45)�

Drain Connection

1.18 (30) � x 2

Fill Connection 1/2 NPT, x 2

Primary Power

Optional Mounting Bracket

39.4 ( 1000 )

22.8 ( 580 )

14.0 ( 356 )

.6 ( 14 )

8.9 ( 226 )15.7

( 400 )

30.7 ( 780 )

1.4 ( 36 )

18.3 ( 465 )

14.0 ( 356 )2.8

( 70 ) 16.0

( 406 ) 16.0

( 406 )

6.5 ( 164 )

16.8 ( 426 )

2.8 ( 70 )

16.0 ( 406 )

16.0 ( 406 )

4.6 ( 117 )

9.6 ( 244 )

15.7 ( 400 )

.3 ( 8 )

2.6 ( 66 )

4.4 ( 111 )

23.3 ( 592 )

14.0 ( 357 )

3.5 ( 89 )

9.1 ( 232 )

6.0 ( 151 )

13.9 ( 353 )

Nortec EL 150-200 Physical Data and Dimensions

32 Product Specifications 2577597_E_EN_2008_Nortec-EL_EM Nortec EL

Figure 14:

ALL UNITS IN INCHES (mm)

EL Small Space (005 to 030) Physical Data & Dimensions Rev A 22-Oct-2015

Empty Weight 83 lbs

Full Weight 113 lbs

Front Clearance* 005-010: 6 in. | 020: 60 in. | 030: 71 in.

Ceiling Clearance* 12 in.

Left/Right Clearance* 12 in.

Floor Clearance* 96 in. (to bottom of blower pack)

Water Inlet Pressure 30-80 psig

* Clearances with blower pack on HIGH

Mounting Keyhole 2x0.25 (6.5) �

Primary PowerDrain Connection

1.18 (30) �

Fill Connection

1/2 NPT

Optional Mounting Bracket

12.0 ( 305 )

3.2 ( 80 )

15.8 ( 400 )

3.6 ( 91 )

1.6 ( 40 )

14.4 ( 365 )

16.5 ( 418 )

3…