Nor-tec MES2 Bedienungsanleitung

MES2

Installation and

Operation Manual

Includes installation, operation

maintenance and troubleshooting

information for the MES2 Electrode

Steam humidifier

2554140-B|18 OCT 2010

Important: Read and save these instructions. This guide to be left with equipment.

Thank you for choosing Nortec.

Proprietary Notice

This document and the information disclosed herein are proprietary data of WALTER MEIER LTD. Neither this

document nor the information contained herein shall be reproduced, used, or disclosed to others without the

written authorization of WALTER MEIER LTD., except to the extent required for installation or maintenance of

recipient’s equipment. All references to the Nortec name should be taken as referring to WALTER MEIER LTD.

Liability Notice

Nortec does not accept any liability for installations of humidity equipment installed by unqualified personnel or

the use of parts/components/equipment that are not authorized or approved by Nortec.

INSTALLATION DATE (MM/DD/YYYY)

MODEL #

SERIAL #

CYLINDER #

Contents

1 Introduction

2 Receiving and Unpacking

3 MES2 Models

6 Options and Accessories

7 Humidifier Components

9 Humidifier Schematic

9 How the Humidifier Works

11 Installation

12 Typical MES2 Installation

13 Location

14 Mounting

15 Plumbing

16 Steam Lines and Condensate

Returns

19 Primary Voltage Wiring

20 Control Wiring

21 Modbus Wiring

22 MES2 Installation Checklist

23 Operation

24 User Interface

25 Humidifier Configuration

27 Modbus Configuration

30 Start Up Procedure

31 Maintenance and

Servicing

32 Required Maintenance

36 Extended Shutdown

37 Maintenance Checklist

39 Troubleshooting

41 General Troubleshooting

43 MES2 Faults

45 Wiring Diagram

46 Spare Parts

50 Warranty

1 | Introduction

Introduction

CAUTION: Servicing

Disconnect main power before performing any servicing.

The plumbing and electrical compartments contain high voltage components and

wiring. Access should be limited to authorized personnel only.

During and following operation of the humidifier, the steam and components in

contact with the steam such as the steam lines, steam distributors, cylinders, and

condensate lines can become hot and can burn if touched.

Walter Meier does not accept any liability for improperly installed humidity

equipment or the use of parts/components/equipment that are not authorized or

approved by Walter Meier.

CAUTION: Electrical

All electrical work should in accordance with the local electrical code in location

where the humidifier will finally be operated.

CAUTION: Plumbing

Drain water from humidifier can be very hot. Do not drain to public sink.

All plumbing work should be in accordance with local plumbing code in location

where the humidifier will finally be operated.

CAUTION: Installation

Do not mount on hot surfaces

Do not mount in area where freezing can occur

Do not mount on vibrating surface

The MES2 produces steam at atmospheric pressure. No devices which could block

steam output should be connected to the steam outlet.

Steam lines must be installed so that no restriction can produce backpressure in

the humidifier.

Regardless of selecting on/off or modulating control method, Nortec humidifiers

must have a closed circuit across its on/off security loop control terminal to

operate. Nortec highly recommends the use of a duct high limit humidistat and air

proving switch.

Introduction | 2

Receiving and Unpacking

1Check packing slip to ensure ALL material has been delivered.

2All material shortages are to be reported to Nortec within 48 hours from receipt of goods.

Nortec assumes no responsibility for any material shortages beyond this period.

3Inspect shipping boxes for damage and note damages on shipping waybill accordingly.

4After unpacking, inspect equipment for damage and if damage is found, notify the shipper

promptly.

5All Nortec products are shipped on an FOB factory basis. Any and all damage, breakage or

loss claims are to be made directly to the shipping company.

Before Installation

1Ensure that available voltage and phase corresponds with humidifier voltage and phase as

indicated on humidifier’s specification label.

2Ensure that the dedicated fused disconnect provided for the humidifier is of sufficient size to

handle the rated amps as indicated on the specification label.

3Ensure sufficient clearances will be available as described in “Location” on page 13.

4Ensure steam lines can be routed to distributor as described in Steam Lines and

Condensate Returns on page 16.

Figure 1: Specification Label Location

3 | Introduction

MES2 Models

The MES2 is the most advanced OEM steam humidifier available and provides steady and

reliable humidification using the same proven cylinder technology as Nortec’s commercial

NHTC. The MES2 is offered in 5 models corresponding to control configurations as shown in

Figure 2. The remote configurations include 8 ft (2.4 m) of wiring for connecting the controls

to the plumbing cabinet. The Primary Voltage Wiring (PVW) model provides 8 feet of primary

wiring for connection to the contactor.

Figure 2: MES2 Models

The MES2 is available in 6 capacities ranging from 5 to 30 lb/hr (2.3 to 13.6 kg/hr) for

operation on a range of voltages and phases as outlined in Table 1: MES2 Part Numbers and

Electrical Data. The 6 capacities are packaged in 4 different cabinet sizes as shown in Figure 3.

Figure 3: MES2 Capacities and Cabinets

5 lb/hr

(2.3 kg/hr)

15 - 20 lb/hr

(6.8 - 9.1 kg/hr)

25 - 30 lb/hr

(11.4 - 13.6 kg/hr)

10 lb/hr

(4.5 kg/hr)

(REM CE)

(ATT OE)

(ATT CE) (ATT CE PVW)

(REM OE)

RemoteAttached Attached PVW

N/A

Introduction | 4

Table 1: MES2 Part Numbers and Electrical Data

Capacity Phase Attached

Open

Elec.

Attached

Closed

Elec.

Remote

Open

Elec.

Remote

Closed

Elec.

Attached

Closed

Elec.

PVW

Stan

dard

Cylin

der

Volts Amps

Max

Ext

Fuse

lb (kg) ATT OE ATT CE REM OE

REM CE

ATT CE

PVW No. V A A KW

5 (2.3) 1

2550262 2550263

2550264

2550265

2550266

102

208 8.2

1.7

240 7.4

277 6.1

2550267 2550268

2550269

2550270

2550271

103

380 4.5

2550272 2550273

2550274

2550275

2550276

104 480 3.7

600 3.0

10 (4.5) 1

2550277 2550278

2550279

2550280

2550281

202

208 16.3

3.4

240 14.8

277 12.3

2550282 2550283

2550284

2550285

2550286

203

380 8.9

2550287 2550288

2550289

2550290

2550291

204 480 7.4

600 5.9

15 (6.8)

2550300 2550301

2550302

2550303

2550304

321

208 24.5

5.1

240 22.2

277 18.4

2550305 2550306

2550307

2550308

2550309

305

380 13.4

2550310 2550311

2550312

2550313

2550314

309 480 11.1

600 8.9

2550315 2550316

2550317

2550318

2550319

303 208 14.2

240 12.8

2550320 2550321

2550322

2550323

2550324

311

380 7.7

2550325 2550326

2550327

2550328

2550329

311 480 6.4

600 5.1

20 (9.1)

2550340 2550341

2550342

2550343

2550344

321

208 32.7

6.8

240 29.6

277 24.5

2550345 2550346

2550347

2550348

2550349

305

380 17.9

2550350 2550351

2550352

2550353

2550354

309 480 14.8

600 11.8

2550355 2550356

2550357

2550358

2550359

303 208 18.9

240 17.1

2550360 2550361

2550362

2550363

2550364

311

380 10.3

2550365 2550366

2550367

2550368

2550369

311 480 8.5

600 6.8

25 (11.4) 3

2553765 2553766

2553767

2553768

2553769

421 208 23.6

8.5

240 21.3

2553770 2553771

2553772

2553773

2553774

407

380 12.9

2553775 2553776

2553777

2553778

2553779

411 480 10.7

600 8.5

30 (13.6) 3

2550370 2550371

2550372

2550373

2550374

421 208 28.3

10.2

240 25.6

2550375 2550376

2550377

2550378

2550379

407

380 15.5

2550380 2550381

2550382

2550383

2550384

411 480 12.8

600 10.2

5 | Introduction

MES2 Dimensions / Weights

Note: Unless otherwise specified dimensions are in inches (cm). Tolerance ±0.1 in. (0.25 cm)

Capacity

lb/hr (kg/hr)

Width

Depth

Height

Steam

Outlet

Steam

Outlet

Elec.

Pos.

Elec.

Height

Drain

Center

Drain

Center

Net/Full

Weight**

lb (kg)

(2.3)

7.5

(19)

6.4

(16.3)

12.7

(35.3)

4.2

(10.7)

5.1

(13)

0.3

(0.8)

4.9

(12.5)

5.6

(14.2)

3.4

(8.6)

10.7/14.2

(5/6.6)

(4.5)

7.5

(19)

6.4

(16.3)

16.8

(42.7)

4.2

(10.7)

5.1

(13)

0.3

(0.8)

8.0

(20)

5.6

(14.2)

3.4

(8.6)

12.4/18.4

(5.8/8.5)

15-20

(6.8 – 9.1)

8.9

(22.6)

7.9

(20.1)

20.0

(50.8)

5.1

(13)

4.0

(10.2)

1.1

(2.8)

11.2

(28.5)

6.4

(16.3)

4.2

(10.7)

16.5/30.5

(7.8/14.2)

25-30

(11.4 – 13.6)

10.3

(26.2)

9.8

(24.9)

20.7

(52.6)

5.5

(14)

4.9

(12.5)

2.2

(5.6)

11.6

(29.5)

6.8

(17.3)

5.2

(13.2)

20.2/43.2

(9.5/20.0)

Note: * Steam Outlet is not centered on MES2 5 & 10 lb/hr (2.3 & 4.5 kg/hr) models.

** Weights given for MES2 with enclosed electronics and optional plumbing enclosure. Full Weight is weight with cylinder full of

water. Full weight may exceed this value at end of cylinder life depending on the amount of scale and its composition.

Figure 4: MES2 Dimensions and Weights

5.50

2.30

5.8 A

3.70

9.4 1.73

4.4

7.79

19.8

1.28

3.3

0.57

1.4

2.5 (6.4) MES2 25 - 30

1.5 (3.8) MES 5 - 20

0.80

1.12 x 2.0 (2.85 x 5.1) Slot

Both Cabinet Sides

0.30

0.8

5.45

13.8

Rotate 360

Desired Position

0.875 (22 mm)

Steam Outlet

0.34 (9 mm)

Condensate

Return

1/8 NPT

Fill Connection

0.875 (22 mm)

Drain Outlet

Introduction | 6

Options and Accessories

An enclosed plumbing option is available for each MES2 cabinet size. The option consists of a

fixed cabinet with an easily removable door for servicing. Figure 5 shows the enclosed

plumbing option installed on a 10 lb/hr MES2 ATT CE.

Figure 5: Enclosed Plumbing Option

Nortec also provides a complete line of options and accessories for every humidification

application. The following table lists some of the most common accessories available for use

with the MES2 humidifier. Refer to the installation instructions that come with the accessories

for their proper installation and operation.

Table 2: Options and Accessories

Option / Accessory Used For

Modbus Interface Controlling humidifier operation via Modbus (See Modbus Wiring

on page 21 and Modbus Configuration on page 27).

Enclosed Plumbing See above.

Steam Distributors Adding steam into air ducts.

On/Off or Modulating Control Humidistats Controlling the output of the humidifier based on sensed RH.

Air Proving Switch Insuring humidification only occurs when air is moving in a duct.

Steam Hose Connecting humidifier to steam distributor.

Condensate Hose Collecting and draining condensate that collects in steam

distributors and steam distribution lines.

Capacity Part No.

10 lb/hr (4.5 kg/hr)

15, 20 lb/hr (6.8, 9.1 kg/hr)

25, 30 lb/hr (11.4, 13.6 kg/hr)

Enclosed Plumbing Part Numbers

5 lb/hr (2.3 kg/hr) 2554073

2554074

2554075

2554076

7 | Introduction

Humidifier Components

Figure 6: MES2 Components

On/Off/Drain Switch

Control Board

Power Relay

Electrical Cover

Control Connection

Terminals

Ground Clam

Bracket, Remote

Electrical

Steam Outlet

Condensate Return

Fill Cup

Drain Valve Drain Outlet

Drain Canal

Fill Valve

Cylinder

Cylinder Plug

High Water Sensor

Plug

Fill Inlet

Plumbing

Enclosure

(Optional)

Plumbing

Door

(Optional)

Cylinder

Tie Wrap

Drain Pan

Status Lights

Current Sensor

Capacity Adjustment

Potentiometer

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