Boga NKBD-6, NKBD-12, NKBD-36, NKBD-18, NKBD-42 Installation And Operation Instructions Manual

Installation- and Operation Instructions

Type

Item No.

Description

Capacity

NKBD-6

7900106

Duct humidifier with 6 outlets

3.6 kg/h

NKBD-12

7900112

Duct humidifier with 12 outlets

7.2 kg/h

NKBD-18

7900118

Duct humidifier with 18 outlets

10.8 kg/h

NKBD-24

7900124

Duct humidifier with 24 outlets

14.4 kg/h

NKBD-30

7910130

Duct humidifier with 30 outlets

18.0 kg/h

NKBD-36

7910136

Duct humidifier with 36 outlets

21.6 kg/h

NKBD-42

7910142

Duct humidifier with 42 outlets

25.2 kg/h

Ultrasonic Duct Humidifier

NKBD-6, -12, -18, -24, -30, -36, -42

[MBA_NKBD_EN] Rev.: 10/2015 8

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Contents

1. References ........................................................................................................................................................................................ 3

2. Safety Instructions .................................................................................................................................................................................... 3

3. Scope of delivery ...................................................................................................................................................................................... 4

4. Optional accessories ................................................................................................................................................................................ 4

5. General information ................................................................................................................................................................ .................. 6

5.1 Technical terms ........................................................................................................................................................................... 6

5.2 Physical principles of piezo ceramics ........................................................................................................................................... 6

5.3 Functional description - ultrasonic air humidifier ........................................................................................................................... 7

6. Advantages of ultrasonic air humidification ............................................................................................................................................... 8

7. Equipment overview ................................................................................................................................................................................. 9

8. The NKBD-System ................................................................................................................................................................................. 10

9. Installation ...................................................................................................................................................................................... 11

9.1 Installation conditions – General notes ....................................................................................................................................... 11

9.2 Installation conditions – special notes ........................................................................................................................................ 12

9.3 Suction operation ....................................................................................................................................................................... 14

9.4 Adjustment of the NKBD to the direction of airflow ..................................................................................................................... 15

10. Hydraulic connection .............................................................................................................................................................................. 16

10.1 Hydraulic conditions ................................................................................................................................................................... 16

10.2 Establishing and detaching connections with connectors ........................................................................................................... 17

11. Electrical Connection .............................................................................................................................................................................. 18

11.1 Transformer ............................................................................................................................................................................... 18

11.2 Humidifier .................................................................................................................................................................................. 19

11.3 Control and regulation ................................................................................................................................................................ 20

11.3.1 Hygrostat control ........................................................................................................................................................... 20

11.3.2 Continuous control......................................................................................................................................................... 20

11.3.3 Control signal encoding ................................................................................................................................................. 20

12. AquaDrain - hygiene management ......................................................................................................................................................... 21

12.1 Description ................................................................................................................................................................................. 21

12.2 Features .................................................................................................................................................................................... 22

12.2.1 Flushing of water supply line.......................................................................................................................................... 22

12.2.2 Drainage of fluid tank ..................................................................................................................................................... 24

12.3 AquaDrain diagrams .................................................................................................................................................................. 25

13. Dimensioning of cable cross section ....................................................................................................................................................... 26

14. Commissioning ...................................................................................................................................................................................... 29

15. Technical data ...................................................................................................................................................................................... 31

16. Device dimensions / weights .................................................................................................................................................................. 32

17. Spare parts list ...................................................................................................................................................................................... 33

17.1 Assembly body duct support ..................................................................................................................................................... 33

17.2 Assembly fluid tank ................................................................................................................................................................... 34

17.3 Assembly Control housing......................................................................................................................................................... 36

18. Circuit diagrams ..................................................................................................................................................................................... 38

19. Protection against overvoltage peaks ..................................................................................................................................................... 50

20. Care ...................................................................................................................................................................................... 50

20.1 Care plan ................................................................................................................................................................................... 51

21. Standards ...................................................................................................................................................................................... 55

21.1 CE Declaration of conformity ...................................................................................................................................................... 55

21.2 RoHS / WEEE ............................................................................................................................................................................ 55

21.3 Legal notice - Copyright ............................................................................................................................................................. 55

2 [MBA_NKBD_EN] Rev.: 10/2015

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

 The electrical system may only be set up by qualified electricians.

In this context, the regulations of DIN VDE series 0100 are fundamental.

 The regulations of the local power supplier concerning the electrical connection

(e.g. residual current circuit breaker, additional potential equalisation etc.) must be complied with. If in doubt, ask your electrician.

 An intended choice of electrical cables and connectors must be used.  Mains voltage and mains frequency of the voltage supply must correspond to the

parameters indicated on the identification plate of the humidifier.

 Do not connect a damaged humidifier (e.g. damaged during transport) to the

mains.

 Contact your customer service if you have any queries about the electrical

connection, the features or the security of the humidifier.

 Disconnect the humidifier from mains, if it does not work perfectly or if damage

has occurred.

 Disconnect the humidifier from mains, if the electrical supply line is damaged.  Work on the humidifier may only be carried out as described in these instructions.  Never use high pressure cleaners to clean the humidifier.  Use grease and oil-free materials only.

1. References

All AIRWIN® ultrasonic duct humidifiers of NKBD series are designed for installation in supply air ducts and air conditioning units.

These installation and operation instructions contain important notes for professional installation, start-up, trouble-free operation and proper maintenance and cleaning.

In addition to regular maintenance, proper installation and care of the NKBD help to preserve the value of the device and are conditions for warranty claims.

2. Safety Instructions

The humidifier described in these instructions was designed and constructed in accordance with the international safety regulations. Like any other electrical device is has to be handled with extreme care, to ensure safe usage.

In order to guarantee safe operation in all operating conditions, the following safety instructions must be observed.

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No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Duct Humidifier NKBD

Fig.: NKBD-24

Installation and operating instructions

Stop cock Ø 10 mm

Item no.

Type

Description

Illustration

0001196

Tube, PA D/d=10/8 mm, blue

Tube water supply D = 10 mm (blue)

0001847

Tube, PE D/d=14/11 mm, nature

Tube water drainage D = 14 mm (nature)

2000105

Mounting brackets

For easy installation of NKBD on a mounting frame in the air duct, made of V2A-stainless steel, incl. adjustable foot. Needs: 2 pcs for NKBD-6 to NKBD-24 3 pcs for NKBD-30 to NKBD-42

200140..

Vertical frame

To build a mounting frame in the air duct, made of V2A-stainless steel, height adjustable from 500-700 mm or 700-1200 mm or 1200-2000 mm PU = 1 set (2 pcs)

3. Scope of delivery

4. Optional accessories

4 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Item no.

Type

Description

Illustration

200141..

Telescopic strut

To build a mounting frame in the air duct, made of V2A-stainless steel, length adjustable from 500-800 mm or 800-1400 mm or 1400-2000 mm PU = 1 set (2 pcs)

200130..

Air vortex sheet

To reduce the humidification distance, made of V2A-stainless steel, width adjustable from 500-750 mm or 750-1000 mm or 1000-1500 mm or 15002000 mm

6100097

BO-80

Duct hygrostat for ON/OFF control of the humidification system, 1-step

6100095

BO-80/2

Duct hygrostat for ON/OFF control of the humidification system, 2-step

77001..

ST200 – ST1600

Transformer for control cabinet installation, from 200 VA to 1600 VA, with primary and secondary protection

77002..

STH200 – STH1600

Transformer in powdered steel housing, with illuminated ON / OFF switch and cable glands from 200 VA to 1600 VA, with primary and secondary protection

6002100

SUR/P-4b

Control cabinet with room humidity sensor or duct humidity sensor for continuous control

60121..

SUR/PT…

Control cabinet with room humidity sensor or duct humidity sensor for continuous control and 500, 1000 or 1600 VA Transformer

8003204

BO-CM-1

Conductivity meter with conductance sensor, cable glands, conductivity range display, Conductivity preliminary warning, conductivity - EMERGENCY/ STOP, C green : <5 µS/cm C yellow : 5 µS/cm < C < 20 µS/cm C red : > 20 µS/cm

8005..

BO-RO-…

Reverse osmosis system 6 l/h and more, with permeate storage tank, other models on request

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

5. General information

5.1 Technical terms

Transducer : Piezo ceramic transducer Aerosols : Finely distributed material (solids or liquids) in air or other gases,

manifestations are e.g. in smoke, dust, vapour and fog

Demineralised water : Pure water, permeate Concentrate : Concentrated water, waste water of reverse osmosis system

5.2 Physical principles of piezo ceramics

If certain crystals are deformed by mechanical stress, electrical charges will build up proportionally on their surface, producing electric field strength in the crystal.

This effect was discovered by Pierre and Jacques Curie in 1880. Even the reversal of this so-called piezoelectric effect or piezo-effect is possible. The same materials change their dimensions under the influence of an electric field.

Ceramic piezoelectric materials are hard, chemically inactive and completely insensitive to humidity or other atmospheric influences.

Oscillation line - piezo ceramics

fig. 1 - Schematic sketch of piezo-effect

6 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Fluid tank

Capillary waves

Ultrasonic transducer

Demineralised water

Point of focusing

Air bubbles

5.3 Functional description - ultrasonic air humidifier

All frequencies above 20,000 Hz are called ultrasonic. According to their physical nature, acoustic waves consist of mechanical oscillations of compressible

media. These oscillations develop due to the deflection of the particles of a compressible material from their equilibrium position. Acoustic waves are bound to a medium and thus do not occur in the vacuum.

Oscillations develop as a result of a change in pressure. Repeated pressure increase and pressure reduction produce different acoustic waves.

In order to be able to use ultrasonic waves for air humidification, electrical energy must be converted into mechanical energy. This takes place in the piezoelectric transducer.

A vibration unit consists of the resonance circuit where the high frequency of ~ 1.7 MHz is produced and the piezoelectric transducer to convert the electrical frequency into a proportional mechanical oscillation. This frequency is not audible for human beings or animals.

The piezoceramic transducers are attached to the bottom of the fluid tank. During excitation of the transducer, the water leads the ultrasonic vibrations to the boundary layer between water and air. Constant compression and decompression of the water gauge over the transducer causes cavitation in the immediate proximity of the water surface. Thus, crossing capillary waves are developed, the finest water particles of which, the aerosols, are produced in the wave crest.

fig. 2 - Schematic sketch aerosol production The aerosols are delivered by the air flow in the humidifier and quickly mix with the ambient air. They

have a small diameter (0.001 - 0.005 mm) and thus form a freely floating mist. The droplet diameter depends on the surface tension and the density of the medium, but also on the excitation frequency. The higher the excitation frequency, the smaller is the diameter of the droplets.

[MBA_NKBD_EN] Rev.: 10/2015 7

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

6. Advantages of ultrasonic air humidification

1. maximum energy saving Compared to steam and infrared humidifiers with the

same humidification output, ultrasonic air humidifiers need up to 93 % less electricity.

2. lowest connected load Compared to electrode steam humidifiers with the same humidification output, only approx. 7 % of the power input is required. Thus, lower third-party connection costs are possible.

3. energy-saving cooling effect During humidification with the ultrasonic air humidifiers, the room air is cooled at the same time due to the adiabatic humidification principle. The result is a lower heat load reducing the cooling output requirements.

4. lowest water consumption Atomiser humidifiers lose up to 70 % of the water, steam humidifiers up to 30 %. AIRWIN® ultrasonic air humidifiers do not have any water loss apart from the cyclical emptying process of the fluid tank on AquaDrain.

5. immediate max. humidification Simultaneously with the request impulse, humidification is carried out without any delay.

Exception: during automatic drainage and line flushing.

6. max. evaporation of the water Ultrasonic air humidifiers produce a very fine aerosol

mist. On average, the diameter of the aerosols is only

0.001 - 0.005 mm. Thus, the mist spreads quickly and is taken up by the air after a very short time

8 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Input for power supply 48 V / 50 Hz

Input and output for control signals

Water overflow and drainage

Push-in-connection Ø 14 mm

Demineralised water inlet

Push-in-connection Ø 10 mm

Outlets

Air baffle, height adjustable

7. Equipment overview

fig. 3 - NKBD-24

[MBA_NKBD_EN] Rev.: 10/2015 9

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

8. The NKBD-System

fig. 4 - Schematic illustration of NKBD air humidification system

Definitions

1. NKBD

2. Stop cock (included in the scope of delivery)

3. External control (hygrostat or continuous control signal - see BOGA product range)

4. Drinking water supply (on site)

5. Free discharge according to DIN 1988 part 4, EN 1717 (on site)

6. Transformer (see BOGA product range)

7. Reverse osmosis system (see BOGA product range)

8. Conductivity meter (e.g. CM-1) to check the quality of the demineralised water (see optional accessories, BOGA product range)

10 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Protect humidifier interiors necessarily from pollution! The protective foil should only be removed immediately prior to commissioning when the air ducts have been cleaned!

To achieve the nominal humidification, it is important that the air velocity is in the range specified. Furthermore, it is very important that the humidifier is installed in an even laminar air flow. Maybe a perforated plate or a flow straightener is necessary.

9. Installation

Proper installation in accordance with the following instructions will ensure trouble-free operation of the NKBD.

The location of the NKBD installation is predetermined by the requirements of the ventilation system and should be defined before installation work is commenced.

9.1 Installation conditions – General notes

 Installing an insulated tubular lamp in the duct and a window will significantly facilitate visual func-

tion checks on the humidifier.

 The place of installation must allow the humidifier to be easily removed and replaced.  The NKBD must be installed in absolutely horizontal position to ensure that ALL the ultrasonic

transducers are covered by the same level of water

 The automatic drainage of the fluid tank and the automatic flushing of the pure water line require

a free discharge on site according to DIN 1988 part 4, EN 1717

 In the immediate vicinity of the duct humidifier, the ventilation unit should be of waterproof design

(stainless steel or with corrosion-proof coating) and should be provided with a water discharge outlet.

 The air velocity in the free duct cross section (net area after installation of the humidifiers)

V = 1.0 - 4.0 m/s. In the case of higher air velocities, perforated metal plates should be installed in the vicinity of the humidifiers.

 The distance from the bottom edge of the NKBD to the ceiling of the air duct must be min. 390

mm (fig. 5 and 7).

 The distance between the NKBD and the duct/trough base must be min. 100 mm (fig. 5 and 7).  The distance between the NKBD control housing and the duct side wall must be min. 70 mm

(fig. 6 und 8).

 The distance between the NKBD and the duct side wall must be min. 200 mm (fig. 6 and 8).  The distance necessary from fixtures in direction of flow differs widely (aerosol disintegration dis-

tance). It is dependent on air velocity, air temperature, actual and set point humidity and must be determined at the planning stage.

[MBA_NKBD_EN] Rev.: 10/2015 11

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

9.2 Installation conditions – special notes

9.2.1 Standard configuration

Mounting example on mounting frame (on site) with mounting bracket NKBD (Item no.

2000105).

fig. 5 - Side view into an air duct with one NKBD

The humidifiers can be arranged directly above one another. The vertical distance between the humidifiers should be  140 mm.

fig. 6 - View into an air duct in direction of air flow, two NKBD mounted above each other

12 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

9.2.2 Stepped configuration

Humidifiers are mounted above one another; offset horizontally (fig. 7 and 8). Mounting example on tubular frame (on site) with NKBD mounting brackets (Item No.

2000105). Stepped configuration is necessary

 if the permissible air velocity would be exceeded on standard configuration or  if more humidification is necessary than would be possible with the standard con-

figuration. The minimum vertical distances are smaller than with the standard configuration, which permits installation of more units and thus increased humidification.

Requirements:

 With stepped configuration, the vertical distance between several humidifiers must

be ≥ 70 mm

 The minimum horizontal distance between several humidifiers must be ≥ 80 mm.  Several humidifiers should be evenly distributed over the entire duct width, observ-

ing the minimum distance of 200/100 mm from the duct walls.

fig. 7 - Side view into an air duct with three NKBD

fig. 8 - View into an air duct in direction of air flow, three NKBD mounted above each other

[MBA_NKBD_EN] Rev.: 10/2015 13

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Avoid constriction of the aerosol mist!

9.3 Suction operation

During suction operation is to ensure that the aerosol mist of the humidifiers is not constricted by the suction of the fan! As may be the case fit a 50 % perforated plate - consider pressure loss.

Fan

fig. 9 - Side view NKBD in the air duct

Suction opening

Suction opening constriction

fig. 10 - Top view NKBD in the air duct

14 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

9.4 Adjustment of the NKBD to the direction of airflow

The NKBD can be adjusted to the flow direction of the duct air. Therefore the duct support must be rotated by 180° if necessary. This allows the humidifier to be situated in a favourable position for the water and electrical connection.

NKBD

direction of the air stream

Body duct support

180°

direction of the air stream

fig. 11 - rotate body duct support

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

All materials coming into contact with the demineralised water must be resistant to demineralised water. Observe pressure and temperature resistance. Demineralised water pipes must be flushed prior to starting the humidifier.

10. Hydraulic connection

10.1 Hydraulic conditions

fig. 12 - Schematic diagram of hydraulic conditions

definitions

1. NKBD

2. Drinking water supply (on site)

3. Water demineralisation system (reverse osmosis system)

4. Demineralised water:

1 bar < pressure ≤ 4 bar 5 µS/cm < conductivity ≤ 20 µS/cm

5. Concentrate

6. Stop cock (included in the scope of delivery)

7. Water supply for plastic tube Ø 10 mm

8. Water overflow and discharge, for plastic tube Ø 14 mm

9. Drainage (on site)

Connections 7-8 are marked with stickers.

Important notes:

 The NKBD may be operated with fully demineralised water only (produced for example by a re-

verse osmosis system). The demineralised water must have a conductivity of min. 5 µS/cm and max. 20 µS/cm.

 The contamination of drinking water may not exceed the max. values laid out in the drinking wa-

ter regulations

 The demineralised water is corrosive, therefore use stainless steel or plastic only. Non-ferrous

metals (e.g. copper, brass) must not be used.

 Water pressure must be minimum 1 bar and maximum 4 bar.  The drainage system on site must be set in accordance with DIN 1988 part of 4, EN 1717.  For easy revision, the stop cock included in the scope of delivery must be installed in the

demineralised water supply line close to the device.

16 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

remove tube

press back support element

support element

stainless steel teeth

10.2 Establishing and detaching connections with connectors

The connectors provide durable, safe and watertight connections between tube and connecting element. The tube is simply inserted by hand. The retaining element holds the tube safely without pressing it or decreasing the flow.

Establishing the connection

Cut tube squarely and free of burrs. Make sure that the tube has no sharp edges, longitudinal grooves or other damage.

fig. 13 - Establishing the connection

Connection is stable prior to sealing

Insert the tube up to the stop. The supporting element holds the tube in the connector. With the help of the O-ring, a tight connection is established. fig. 14 - Insert tube

Check the connection by pulling towards the opposite side

By pulling towards the opposite side check whether the tube was safely inserted.

fig. 15 - Check connection

Detaching the connection

The tube can be detached by pushing back the supporting element.

fig. 16 - Detaching the connection

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No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

11. Electrical Connection

11.1 Transformer

11.1.1 The transformers are available either loose or installed in a sheet metal housing. When in-

stalling in the control cabinet, it is essential to make allowance for the heat dissipated from the transformers. The control cabinet may have to be provided with forced-air cooling.

11.1.2 A single large transformer may be selected to serve several humidifiers. In such cases,

make sure that each outgoing secondary circuit is fuse-protected, either external in the control cabinet or within the transformer ex- factory.

11.1.3 The transformer transforms the primary voltage of 230 V / 50 Hz to the secondary voltage

of 48 / 53 V.

11.1.4 The power connection cable leading to the transformer and from the transformer to the

humidifier must at least satisfy H05VV or H05RR specifications.

11.1.5 The transformers of BOGA are manufactured according to the following specifications:

Single-phase control-power transformer in accordance with VDE 0550 Parts 1+3 and VDE 0113, IP00, Protection Class 1, Insulation Class T40E, separate windings, screwconnection in accordance with VBG4, 50/60 Hz.

fig. 17 - Transformer with a secondary output

fig. 18 - Transformer with multiple secondary outputs

18 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

The input of the safety chain must always be supplied with a voltage of 48 V. Cable bridges are always mounted ex-factory between connections 1-2 safety chain and 9-10 48 V. The humidifier does NOT work otherwise. When connecting several humidifiers, the safety chain must be connected in parallel to each humidifier. CAUTION: the 48 V supply must only be taken once.

11.2 Humidifier

The humidifier is connected at the 48 V (L, N, PE) bushing terminals for electrical power and at the 10-pole connector (located in the centre section of the control housing) for control/safety chain/function control. The connections will be exposed by releasing the toggle fasteners on the control housing cover and removing the cover.

1-2 Function control 3-4 Safety chain 5-6 Hygrostat 50 % * 7-8 Hygrostat 100 % * 9-10 Control signal

*of nominal humidifying capacity

11.2.1 Humidifier power connection

11.2.2 Safety chain

DIP-Switch

fig. 19 - Electrical power connection

 Connect power (L 48 V - N ) to the appropriately marked bushing terminals  Connect protective earth conductor to the green/yellow bushing terminal

Connect safety chain to the screw-type connectors marked 3 and 4. Observe the 48 VAC power supply.

B1: limit hygrostat B2: flow monitor B3: fan locking B4: conductivity measurement B5: ON/OFF switch

fig. 20 - Safety chain

11.2.3 Operation Control

As soon as the humidifier starts humidifying a relay will close on the control circuit board of the NKBD. This information may be used for further processing (e.g. building services management system). Connection at 1 and 2 on the screw-type connector

[MBA_NKBD_EN] Rev.: 10/2015 19

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Load rating of potential-free output: 120 VAC  6 A

48 VAC  6 A 28 VDC  6 A

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

If a hygrostat and continuous controller are connected at the same time, the humidifier always runs first the larger request.

When connecting several NKBD humidifiers to one hygrostat, they must be connected in parallel; see circuit diagram (see chapter 18).

Control

1 2 3 4 5 6 Load

input resistance

0 - 20 mA

on

on - on - -

110.0 mW

275 Ω

4 - 20 mA

on - on

on - -

110.0 mW

275 Ω

0 - 5 VDC

-

on - on - -

7.3 mW

3425 Ω

1 - 5 VDC

- - on

on - -

8.0 mW

3125 Ω

0 - 10 VDC

-

on - on

on - 30.0 mW

3333 Ω

2 - 10 VDC

- - - - on - 30.0 mW

3333 Ω

0 - 16 VDC

-

on - - - on

77.0 mW

3325 Ω

3 - 16 VDC

- - on

on - on

77.0 mW

3325 Ω

0 - 20 VDC

-

on - -

on

140.0 mW

2857 Ω

4 - 20 VDC

- - on

on

130.0 mW

3077 Ω

Hyg 1/2

- - - - - -

11.3 Control and regulation

11.3.1 Hygrostat control

HYG 1: 50 % of nominal humidifying capacity - connection 3 and 4 HYG 2: 100 % of nominal humidifying capacity - connection 5 and 6

11.3.2 Continuous control

The NKBD is capable of processing 10 different external controlled variables (T ab. 11.1). Coding is shown on the circuit diagrams, including load. The control cable must be connected at 9(+) and 10(-) paying attention to correct phase sequence (+/-). From the factory, the control variable 0-10 VDC is always coded. The connection of the continuous control is shown in the circuit diagrams in Chapter 18.

11.3.3 Control signal encoding

The encoding of the input variables below usually carried out by the 6-pin DIP-switch S1 on the control board.

DIP switch

fig. 21 - control board Tab. 11.1 Coding table for DIP-switch

20 [MBA_NKBD_EN] Rev.: 10/2015

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12. AquaDrain - hygiene management

12.1 Description

AquaDrain is a system designed to flush the pure water inlet pipe to the humidifier according to various parameters and to cyclically empty the fluid tank of the NKBD. To do so, AquaDrain uses a certain software and a solenoid valve combination integrated in the housing of the humidifier. In addition, AquaDrain prevents that the fluid tank is refilled with water, which had been reduced by evaporation, during the humidification-free periods of the AquaDrain cycle.

The AquaDrain cycle is the cycle in which the humidifier, minus the time for flushing the water inlet pipe and draining of the fluid tank, can humidify continuously, but does not necessarily have to do so. The AquaDrain cycle is 12 hours and the cycle was preset in the factory. Optionally this setting may be changed by the manufacturer to 48 h, 24 h, 6 h, 3 h, 1.5 h and 0.75 h

Definitions

1. NKBD

1.1. Solenoid drainage valve, integrated

1.2. Solenoid inlet valve, integrated

2. Water overflow and drainage

3. Water supply

4. Demineralisation system (reverse osmosis system)

5. Water drainage

fig. 22 - AquaDrain - diagram

[MBA_NKBD_EN] Rev.: 10/2015 21

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1

Flushing of the pure water supply line

160 s / 50 Hz

133 s / 60 Hz

2

Safety drainage for rinse water

160 s / 50 Hz

133 s / 60 Hz

3

Filling the fluid tank up to maximum level

*

4

Start of humidification

#

1

Flushing of pure water supply line

160 s / 50 Hz

133 s / 60 Hz

2

Safety drain for rinse water

160 s / 50 Hz

133 s / 60 Hz

3

Standby for humidification request

#

12.2 Features

12.2.1 Flushing of water supply line

The humidifier goes into flushing mode, which is carried out in two phases depending on the time, for the following events:

1. Initial start-up (operating voltage is present for the first time)

2. Operating voltage is applied again (after each interruption of operation voltage)

3. After each humidifying pause which is longer than the AquaDrain cycle The first phase includes the actual flushing process. The solenoid inlet and drainage

valves are opened at the same time for 160 seconds. The water supply pipes and/or tubes are rinsed. This ensures that the FIRST water present in the supply line (possibly hygienically questionable) is not atomised as it is drained directly without filling up the fluid tank. The flushing volume depends on the pressure of the pure water (fig. 24).

In the second phase the solenoid inlet valve is closed again. The solenoid drainage valve remains open for another 160 s to ensure that the water that might still be inside the fluid tank is drained.

If a humidification request is made after the two-phase rinse operation, the humidifier will go into normal operation. At the same time, the solenoid inlet valve opens and the solenoid drainage valve closes. The fluid tank is filled up to maximum level. After that, provided that all internal and external safety elements allow for operation, humidification starts.

* The filling time for the fluid tank of the NKBD is determined by the pressure of the pure water.

If no humidification request follows after the two-phase rinse operation, the humidifier will go into standby mode until a humidification request is carried out.

22 [MBA_NKBD_EN] Rev.: 10/2015

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Any humidification request made during the rinse operation will be ignored.

fig. 23 – Example for commissioning and restart

Definitions *) possible cycles: 0.75 - 1.5 - 3 - 6 - 12 - 24 - 48 h (default 12 h, may be changed in the

factory upon request)

0) Humidity request OFF

1) Humidity request ON

2) Fluid tank empty

3) Fluid tank full A) Flushing of water supply line

B) Drainage of fluid tank

[MBA_NKBD_EN] Rev.: 10/2015 23

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Any humidification request made during the drainage process will be ignored.

1

Drainage after 12 h from NKBD-6 to NKBD-30 from NKBD-36 to NKBD-42

160 s / 50 Hz 320 s / 50 Hz

133 s / 60 Hz 267 s / 60 Hz

2

Filling of fluid tank up to maximum level

* * 3

Start of humidification

#

1

Drainage after 12 h from NKBD-6 to NKBD-30 from NKBD-36 to NKBD-42

160 s / 50 Hz 320 s / 50 Hz

133 s / 60 Hz 267 s / 60 Hz

2

Standby for humidification request

#

12.2.2 Drainage of fluid tank

The NKBD is drained in cycles every 12 hours, if humidification took place in the last AquaDrain cycle and in case of any power interruption in the AquaDrain cycle (operating voltage is no longer present).

If the system is drained, the fluid tank will only be refilled with pure water after a humidification request was made.

* The filling time for the fluid tank of the NKBD is determined by the pressure of the pure water and the NKBD-Type.

The fluid tank will stay dry, if there is no humidification request.

fig. 24 - Period without humidification

fig. 25 - New humidification request

A) Flushing of water supply line B) Drainage of fluid tank

24 [MBA_NKBD_EN] Rev.: 10/2015

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12.3 AquaDrain diagrams

fig. 26 - Flow volume inlet solenoid valve ND 1.2 mm depending on water pressure

fig. 27 - Flushing volume in litres at 160 sec flushing time depending on water

pressure

fig. 28 - Drainage volume - fluid tank NKBD

[MBA_NKBD_EN] Rev.: 10/2015 25

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The physical distance and the length of cable between the transformer and the humidifier should therefore be kept to a minimum!

The dimensions of the transformer is determined not only by the electrical power consumption of the humidifier NKBD but also on the power consumption of the cable feed (ohmic resistance)!

13. Dimensioning of cable cross section

The ohmic resistance between transformer and humidifier through the power cable produces a loss in voltage and consequently a drop in humidifier output.

The voltage drop caused by ohmic resistance may be reduced by using a cable of large cross section and compensated for by the 53 V secondary connection at the transformer. The graphs fig. 29 - 35 show the ohmic loss for each humidifier depending on the cable length.

Using the 53 V transformer secondary voltage results in an overvoltage of 5 V (~ 10 % of 48 V) which may be consumed by the ohmic resistance of the cable. The correct cross-section of the cable will always be that which comes closest to the 5V mark for the voltage loss.

On account of the negligible power consumption of the humidifiers, the open-circuit voltage on the other hand is almost equal to the voltage at the transformer. To prevent damage to the humidifier electronics, the open-circuit may not exceed 54 V.

Installation costs will be kept to a minimum if the graphs are correctly used.

The conductor resistance of fine-stranded: 1.5 mm² = 13.30 Ω/km

2.5 mm² = 7.98 Ω/km

4.0 mm² = 4.95 Ω/km

6.0 mm² = 3.30 Ω/km 10 mm² = 1.91 Ω/km 16 mm² = 1.21 Ω/km 25 mm² = 0.78 Ω/km

(extract from VDE 0295 and IEC 60228 for bare wires, class 5) Conductor resistances refer to single-stranded conductors. They must therefore be multiplied by 2 for

two-stranded conductors (N+L1). In addition, the load capability of insulated leads (current density) should be taken into account. VDE 0100

Part 430 and Part 523).

26 [MBA_NKBD_EN] Rev.: 10/2015

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fig. 29 - Voltage loss at A = 1.5 mm² fig. 30 - Voltage loss at A = 2.5 mm²

fig. 31 - Voltage loss at A = 4 mm² fig. 32 - Voltage loss at A = 6 mm²

[MBA_NKBD_EN] Rev.: 10/2015 27

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fig. 33 - Voltage loss at A = 10 mm² fig. 34 - Voltage loss at A = 16 mm²

fig. 35 - Voltage loss at A = 25 mm²

28 [MBA_NKBD_EN] Rev.: 10/2015

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14. Commissioning

Before commissioning the NKBD, check once again that all installation and wiring work has been carried out correctly and fully completed. In particular, the water and power supply connections must be in proper order and comply with the relevant safety regulations.

a) Manual functions:

 Release of permeat inlet into the NKBD

fig. 36 - Stop cock

 Release of 230 V / 50 Hz to the transformer and

switch on transformer

fig. 37 - Circuit breaker

 The SET humidity at the continuous control or hygrostat

must be higher than the ACTUAL humidity

fig. 38 – Duct hygrostat

[MBA_NKBD_EN] Rev.: 10/2015 29

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The feature "Flushing of water supply line" does not replace flushing of the

newly established water inlet pipe. Flushing only changes the pure water (which may be hygienically questionable) in the supply line.

The fluid tank may only be filled if a humidification request has been made.

Otherwise the fluid tank of the NKBD will remain dry.

b) Automatic functions:

 Flushing of water supply line:

The solenoid inlet valve of the humidifier opens. The solenoid drainage valve is open. The water supply line is flushed without the fluid tank of the NKBD being filled.

The solenoid inlet valve closes. The solenoid drainage valve stays open for 160 seconds.

 Filling the fluid tank:

The solenoid drainage valve closes. The solenoid inlet valve opens. The fluid tank of the NBKD is filled. The water level is automatically controlled within narrow tolerances. Internal safety monitoring of the water temperature and dry running protection is done automatically.

 Humidification:

Once the maximum water level is reached and the humidification request is still present, humidification will start. The green control lamp lights up as soon as the NKBD is ready for humidification or is humidifying already.

c) Make applied settings:

 Adjust SET humidity at continuous controller or hygrostat.

Commissioning of the NKBD is completed.

30 [MBA_NKBD_EN] Rev.: 10/2015

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S p e c i f c a t i o n s

NKBD-6

NKBD-12

NKBD-18

NKBD-24

NKBD-30

NKBD-36

NKBD-42

Humidifying capacity *

Transducer

Power supply

Transformer

Humidifier**

Power consumption

Transformer **

kg/h

Unit

V / 50 Hz V / 50 Hz

VA / 50 Hz VA / 60 Hz

ST

3.6 6

230

48

185 220

250

7.2

12

230

48

375 448

500

10.8 18

230

48

555 660

800

14.4 24

230

48

735 875

1000

18.0 30

230

48

915

1089 1300

21.6 36

230

48

1095 1303

1600

25.2 42

230

48

1275 1518

1600

S a f t y d e v i c e s

Dry-running protection

Overheating protection Overflow protection

Voltage spike protection

Unterbrechungsschutz

If the water level falls below minimum in the fluid tank, the NKBD switches humidification off automatically.

The NKBD switches off humidification at water temperatures > 60 °C. If the NKBD fluid tank is overfilled, the excess water is drained off to

the outside through the overflow. To suppress voltage peaks a transient suppressor diode works

from the tips. In case of electrical interruptions between oscillator board and

US-transducer no defects occur.

B e t r i e b s b e d i n g u n g e n

maximum air humidity Air temperature Pure water pressure Pure water quality Pure water conductivity

< 90 % relative humidity – no condensation! 5 - 45 °C 1 - 4 bar fully demineralised 5 - 20 µS/cm

15. Technical data

Tab. 15.1

* Humidifying capacity is dependent on the quantitative air flow rate through the humidifier (air ve-

locity in the duct), on the uniformity of flow over the entire fluid tank length, on the level of supply voltage under load (nominal 48 V), on the water temperature and on the cleanliness of the

Tab. 15.2

fluid tank and the ultrasonic transducers (regular care).

** The power output of the transformers stated is optimised for the NKBD types. Their power re-

serves are sufficient to bear the power consumption of a correctly laid supply cable with short distance between humidifier and transformer. Nevertheless, it is advisable to check transformer selection mathematically according to local conditions.

Tab. 15.3

[MBA_NKBD_EN] Rev.: 10/2015 31

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NKBD

Type

Weight

Dimensions

Point mounting

width

B

depth

T

T1

T2

height

H

H1 min.

H2 max.

P1

P2

P3

P4

kg

mm

N-KBD-6

6.0

285

197

261

265

131

202

237

124

- - 231

N-KBD-12

7.7

435

197

261

265

131

202

237

274

- - 231

N-KBD-18

9.5

585

197

261

265

131

202

237

394

- - 231

N-KBD-24

11.7

735

197

261

265

131

202

237

544

- - 231

N-KBD-30

13.7

885

197

261

265

131

202

237

694

312

382

231

N-KBD-36

15.2

1035

197

261

265

131

202

237

844

387

457

231

N-KBD-42

17.2

1185

197

261

265

131

202

237

994

562

532

231

16. Device dimensions / weights

Tab. 16.1

fig. 39 - NKBD

32 [MBA_NKBD_EN] Rev.: 10/2015

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Pos.

Description

Item No.

NKBD-

6

NKBD

-12

NKBD

-18

NKBD

-24

NKBD

-30

NKBD

-36

NKBD

-42

1

Body duct support 6x

1737 - - - - - -

1

Body duct support 12x

-

1738

-

1738

-

1738

1

Body duct support 18x

- - 1739

-

1739

2

Folded sheet duct support 6x

1718 - - - - - -

2

Folded sheet duct support 12x

-

1719

-

1719

-

1719

2

Folded sheet duct support 18x

- - 1720

-

1720

3

Elbow extension duct support 6x

1721 - - - - - -

3

Elbow extension duct support 12x

-

1722

-

1722

-

1722

3

Elbow extension duct support 18x

- - 1723

-

1723

4

Lensehead screw DIN-7985-A2-M4x12

1465

5

Disk DIN-125-A2-4,3

1532

6

Disk DIN-7349-A2-4,3

1493

7

Spring ring DIN-127-A2-B4

1998

8

Hexagon nut DIN-934-A2-M4

1531

9

Exhaust hood, big outlet

9033

17. Spare parts list

17.1 Assembly body duct support

fig. 40 - Assembly body duct support

Tab.: 17.1

[MBA_NKBD_EN] Rev.: 10/2015 33

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17.2 Assembly fluid tank

fig. 41 - Assembly fluid tank

34 [MBA_NKBD_EN] Rev.: 10/2015

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Pos.

Description

Item No.

NKBD-

6

NKBD-

12

NKBD-

18

NKBD-

24

NKBD-

30

NKBD-

36

NKBD-

42

10

Fluid tank NKBD-6

1960 - - - - - -

10

Fluid tank NKBD-12

-

1961 - - - -

-

10

Fluid tank NKBD-18

- - 1962 - - - -

10

Fluid tank NKBD-24

- - -

1963 - - - 10

Fluid tank NKBD-30

- - - - 1964 - -

10

Fluid tank NKBD-36

- - - - -

1965

-

10

Fluid tank NKBD-42

- - - - - - 1966

11

Spacer disk transducer-ABS

1889

12

Transducer TU-42-X

9024

13

Spring disk DIN-137-A2-B3.5

1837

14

Hexagon nut DIN-934-A2-M3

1599

15

Insulating bush IB 6

1184

16

Oscillator board 4/3 SMD

9004

17

Float switch, level

1509

18

Float switch, dry

1875

19

Screw-in socket 3/8" Ø15 mm, BSP parallel thread

2631

20

Sieve water filter, stainless steel, Ø 18mm

1864

21

O-ring 21x2,5mm - NBR70

1893

22

Multihousing overflow

1876

23

Multihousing supply/discharge

1912

24

Disk DIN-7349-A2-3,2

1913

25

Spring ring DIN-127-A2-B3

1914

26

Seal ring G½"x1,5 hard PVC

1833

27

Straight screw-in connection D/d=15/12,5 mm, G½''

1845

28

Basin cover NKBD-6

1953 - - - - - -

28

Basin cover NKBD-12

-

1954 - - - -

-

28

Basin cover NKBD-18

- - 1955 - - - -

28

Basin cover NKBD-24

- - -

1956 - - - 28

Basin cover NKBD-30

- - - - 1957 - -

28

Basin cover NKBD-36

- - - - -

1958

-

28

Basin cover NKBD-42

- - - - - - 1959

29

Closing sheet 06x

1724 - - - - - -

29

Closing sheet 12x

-

1725 - - - -

-

29

Closing sheet 18x

- - 1726 - - - -

29

Closing sheet 24x

- - -

1733 - - - 29

Closing sheet 30x

- - - - 1734 - -

29

Closing sheet 36x

- - - - -

1735

-

29

Closing sheet 42x

- - - - - - 1736

30

Disk DIN-125-A2-4,3

1532

31

Lensehead screw DIN-7985-A2-M4x8

1618

Tab.: 17.2

[MBA_NKBD_EN] Rev.: 10/2015 35

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

17.3 Assembly Control housing

fig. 42 - Assembly Control housing

36 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Pos.

Description

Item No.

NKBD

-6

NKBD-

12

NKBD-

18

NKBD-

24

NKBD-

30

NKBD-

36

NKBD-

42

32

Control housing centre section NKBD

1951

33

Basic bar 10-poles

1979

34

Lensehead screw DIN-7985-A2-M2x10

3165

35

Disk DIN-125-A2-2,2

1882

36

Spring ring DIN-127-A2-B2

1492

37

Hexagon nut DIN-934-A2-M2

3166

38

Plug 10-poles angled

1290

39

Name plate 0-10 for plug

1171

40

Lead-through terminal L, N

1884

41

Lead-through terminal PE

1883

42

Cable bushing Ø5x8x11

1873

43

Distance bolt Ms M3x12 outside/ M3 inside

1717

44

Snap-In distance bolt M3x12

1892

45

Control board Hyg UB/P-D, RB/P-D, NKBD

9012

46

Suppressor diode, 1.5KE, 82CA,

1775

47

Lensehead screw DIN-7985-A2-M4x8

1618

48

PE - flat plug 1x

1898

49

Disk DIN-125-A2-4,3

1532

50

Spring ring DIN-127-A2-B4

1998

51

Hexagon nut DIN-934-A2-M4

1531

52

Control housing cover NKBD

1952

53

Control housing bottom NKBD

1950

54

Seal ring G½"x1,5 hard PVC

1833

55

Elbow screw-in connection rotatable G½“

3177

56

Solenoid supply valve 1/8" (SP)

1860

57

Seal for solenoid valve supply (SP)

1861

58

Device plug for solenoid supply valve (SP)

1863

59

Seal ring G1/8"x1,5 hard PVC

1836

60

Rubber seal 25x25x1 with Ø8

1727

61

Reducing nipple G1/8"-G½"

2003

62

Sieve water filter, stainless steel, Ø 18mm

1864

63

Elbow screw-in connection rotatable G½“

3178

64

Elbow screw-in connection rotatable G1/8“

1347

65

Solenoid drain valve 2x3/8" (SP)

1728

66

Seal for solenoid valve discharge (SP)

1732

67

Device plug for solenoid discharge valve (SP)

1731

68

Adapter supply/discharge

1877

69

Adapter overflow/discharge

1878

70

Straight screw-in connection D/d=15/12,5 mm, G½''

1845

71

Tube PVC fabric D/d =15/12.5 mm, blue

1862

72

Disk DIN-7349-A2-3,2

1913

73

Locking nut DIN-985-A2-M3

1321

74

Lensehead screw DIN-7985-A2-M3x16

1625

75

PE -flat plug 3x

1897

76

Plug-in screw clamp NKBD

1890

77

Disk DIN-125-A2-3,2

1600

78

Hexagon nut DIN-934-A2-M3

1599

Tab.: 17.3

[MBA_NKBD_EN] Rev.: 10/2015 37

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

18. Circuit diagrams

fig. 43 - 1x NKBD, 1x transformer, safety chain,control hygrostat 1-step

38 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 44 - 2x NKBD, 2x Transformer, safety chain, control hygrostat 1-step

[MBA_NKBD_EN] Rev.: 10/2015 39

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 45 - 2x NKBD, 1x transformer, safety chain,control hygrostat 1-step

40 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 46 - 1x NKBD, 1x transformer, safety chain, control hygrostat 2-steps

[MBA_NKBD_EN] Rev.: 10/2015 41

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 47 - 2x NKBD, 2x transformer, safety chain, control hygrostat 2-steps

42 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 48 - 2x NKBD, 1x transformer, safety chain, control hygrostat 2-steps

[MBA_NKBD_EN] Rev.: 10/2015 43

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 49 - 1x NKBD, 1x transformer, safety chain, continuous control

44 [MBA_NKBD_EN] Rev.: 10/2015

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 50 - 2x NKBD, 2x transformer, safety chain, continuous control current

[MBA_NKBD_EN] Rev.: 10/2015 45

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 51 - 2x NKBD, 2x transformer, safety chain, continuous control voltage

46 [MBA_NKBD_EN] Rev.: 10/2015

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 52 - 2x NKBD, 1x transformer, safety chain, continuous control current

[MBA_NKBD_EN] Rev.: 10/2015 47

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 53 - 2x NKBD, 1x transformer, safety chain, continuous control voltage

48 [MBA_NKBD_EN] Rev.: 10/2015

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

fig. 54 - Internal wiring NKBD

[MBA_NKBD_EN] Rev.: 10/2015 49

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Good accessibility and exchangeability of the NKBD save costs!

Deposits are a direct consequence of inadequate water quality!

19. Protection against overvoltage peaks

To secure the electronic devices of the NKBD against transient overvoltage peaks, a suppressor diode was soldered onto the bottom of the control board. Suppressor diodes are components to protect inputs and outputs of electronic circuits against short-term overvoltage peaks that may occur due to switching operations in the network or close to lightning. In case of long-term overvoltage peaks or major performance-based overvoltage peaks, the diode will switch to permanent short circuit which will then trigger the FI switch in the system. For a restart of the humidifier, the diode must be replaced (no. 46 exploded diagram on page 36).

20. Care

It is essential that the NKBD is easy to inspect and easily accessible on site.

Prior to opening the NKBD, it must be disconnected from the electricity and water supply.

Then remove the body duct support. In case of pollution, the fluid tank of the NKBD must be cleaned by using a clean, medium hard brush and clean water. The transducers must be wiped clean with a soft, scratch-free cloth. Incrustations or solid deposits on the transducers must be carefully removed. For that purpose, it is recommended to use 20 % formic acid.

The care intervals depend on the respective degree of contamination of the humidifier. It depends directly on the cleanliness of the intake air and the feed water quality. It may be necessary to perform care at shorter intervals.

The performance of the ultrasonic transducers decreases with actual operating hours. The life time of the ultrasonic transducers will be shortened by unfavourable operating conditions e.g. water and air pollution or overvoltage.

50 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

20.1 Care plan

The following 3 pages include

the Care plan

Use it as

copy template.

[MBA_NKBD_EN] Rev.: 10/2015 51

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Duct humidifier NKBD

_____________________________________________________________

C A R E P L A N

for NKBD.....................................

device no.....................................

52 [MBA_NKBD_EN] Rev.: 10/2015

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Care and cleaning tasks

1. Checks

Check the air duct, the fluid tank and

the transducers for contamination.

 Clean them, if necessary!

Initially, a check has to be carried out after 1 week.

Depending on the degree of contamination of the fluid tank and the

transducers the cleaning intervals must be adjusted.

If pollution is found during the check, cleaning must be performed.

2. Care and cleaning

see Chapter 20

- Fluid tank

- Transducers

Slime in the fluid tank is a sign of the presence of micro-organisms!

Cause: Air and/or water

Incrustations are mineral deposits!

Cause: Water

Measures

 Check and clean the air duct, if required!  Check reverse osmosis system!  Adjust cleaning intervals!

Even without visible pollution, cleaning must be done at least every 12 months.

[MBA_NKBD_EN] Rev.: 10/2015 53

No liability accepted for translation or printing errors. Subject to changes in dimensions, weights and other technical data. All rights reserved. Modifications, reprints and photomechanical reproduction, even in extract from, require the express permission of BOGA GmbH, Werkstraße 16, D-59494 Soest.

BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

Checks / cleaning tasks carried out

ch/cl*

Date

Name

ch/cl*

Date

Name

* ch = check, cl = cleaning

54 [MBA_NKBD_EN] Rev.: 10/2015

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BOGA GmbH • Werkstraße 16 • D-59494 Soest • Fon: +49 2921 96943-0 • Fax: +49 2921 96943-29 • info@airwin.net • www.airwin.net

21. Standards

21.1 CE Declaration of conformity

The series AIRWIN® ultrasonic duct humidifier (NKBD-6 to NKBD-42) is manufactured in accordance with EC Directive 89/336/EEC.

The series meets the following harmonised standards: EN 50081-2 / 93; EN 50082-1 / 92; EN 50082-2 / 92.

The series complies with the safety regulations of VDE 0100 and was tested in accordance with VDE 701 part 1.

21.2 RoHS / WEEE

To protect the environment, the RoHS Directive (as of 01.07.2006) is implemented for the manufacture of AIRWIN® ultrasonic duct humidifier (NKBD-6 to NKBD-42). As before, the product complies with the respective IEC standards and the customer requirements relating to quality, reliability and safety.

The humidifier is WEEE-registered.

21.3 Legal notice - Copyright

Legal notice

Copyright

BOGA GmbH Gesellschaft für moderne Gerätetechnik Werkstraße 16 D-59494 Soest Phone : + 49 2921 96943-0 Fax : + 49 2921 96943-29 E-mail : info@airwin.net Website : www.airwin.net

The copyright and all other rights of use for the documents belong to BOGA GmbH. The documents may not be copied, distributed, publicly displayed, edited or otherwise transformed without the written consent of BOGA GmbH.

[MBA_NKBD_EN] Rev.: 10/2015 55

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Boga NKBD-6, NKBD-12, NKBD-36, NKBD-18, NKBD-42 Installation And Operation Instructions Manual

Specifications and Main Features

Frequently Asked Questions

User Manual