Nortec Air Humidification System BS User Manual

Installation and Operating instructions

Air Humidification System BS

Type BS5/10

A WMH company

Contents

1. Introduction 4

1.1 Right at the beginning! 4

1.2 Notes on the technical documentation 4

2. For your safety 5

3. Products overview 6

3.1 System versions BS 6

3.1.1 System BS5/10 6

3.2 Functional description 8

3.2.1 Functional description systems BS5/10 8

4. Basic principles for planning 9

4.1 Notes on the planning of air humidification systems in one area 9

4.1.1 Example 1 (BS10) 9

4.1.1.1 Calculating the maximum humidification capacity 10

4.1.1.2 Determining the device requirements 11

4.1.1.3 Determining the compressed air and water requirements 12

4.2

4.2.1 Example 2 (BS5/10) 13

4.2.1.1 Calculating the maximum humidification capacity 13

4.2.1.2 Determining the device requirements 13

4.1.1.3 Determining the compressed air and water requirements 15

4.3 Notes on the water supply 16

4.3.1 Requirements regarding untreated water (drinking water or tap water) 16

4.3.2 Requirements regarding water treatment 17

4.4 Notes on the compressed air supply 17

4.5 Notes on the run of the tubes 18

5. Installation 18

5.1 Safety notes on installation 18

5.2 General notes on placing 19

5.3 General notes on assembly 20

5.3.1 Atomiser BS5/10 20

5.4 Electrical installation 22

5.4.1 BS5/10 22

Notes on the planning of an air humidification system in several areas 13

5.5 Material specifications 23

5.5.1 Protective tube 23

5.5.2 Air tube and water tube 23

5.5.3 Cables 23

6. Operation 24

6.1 Switching off during daily operation 24

6.1.1 Switching off completely 24

6.1.2 Partial switching-off 24

6.2 Putting into operation in daily operation 25

6.3 Checks 25

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7. Exchange of components 26

7.1 Atomiser BS5/10 26

8. Technical data 27

8.1 Atomiser BS5/10 27

9. Annex 27

9.1 Accessories / spare parts 27

9.2 hx diagram 28

9.3 Conformation statement 29

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1. Introduction

1.1 Right at the beginning

Thank you for deciding on the DRAABE air humidification system BS.

The air humidification system BS was constructed according to the present-day state of the art
and the approved safety requirements. Nevertheless dangers may arise for the user and / or
third persons and / or tangible assets may be damaged in case of improper usage of air
humidification systems.

In order to ensure a safe, proper and economical operation, please pay attention to and follow all
specifications and notes on safety contained in this technical documentation.

If you have any queries about matters which are not dealt with in this document, or if you need
more details, please contact your local NORTEC regional distributor, or call our Service
Hotline [phone]). They will be glad to help.

1.2 Notes on technical documentation

Definitions

This technical documentation deals with the DRAABE air humidification system BS in its
construction versions BS5, BS10.

The explanations contained in this technical documentation are limited to:

- the planning of an air humidification system BS.

- the installation, the operation and the maintenance of the air humidification system BS

The technical documentation is supplemented by various separate documentation sheets
(leaflets, order forms, etc.). Relevant cross-references to these publications can be found within
this technical documentation whenever necessary.

Agreement

This symbol marks notes concerning safety and dangers. In case of non-compliance, physical
injuries and / or material damage may be the result. Notes concerning safety and dangers are also
marked with CAUTION.

This symbol marks important notes. These are also referred to by NOTES.

[You find this symbol on the type plates of all devices (atomisers, etc.). It requests you to read through the
technical documentation before performing any action on the system. In the case of ambiguity after
reading through the technical documentation, you are requested to contact the technical customer service

!

of the manufacturer at first before any action is carried out.

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Storage

Please keep the technical documentation in a safe place where it is always in your reach. If you have
lost the documentation, please contact NORTEC.

Language versions

This technical documentation is available in various languages. Please contact NORTEC in this
connection.

2. For your safety

Agreement on use

The air humidification system BS is exclusively designed for the controlled humidifying of
rooms within the framework of the specified operating conditions in rooms that are not

explosion-endangered. Any other utilisation is regarded as not contractual and may result in
risks caused by the system.

Contractual use also implies observing of all pieces of information contained in this
instruction manual (especially the notes on safety) and strictly paying attention to the operation
conditions.

General notes on safety

Only persons who made themselves familiar with the product and who are sufficiently qualified
for the relevant works may install and operate it. Amending the different technical documentation
sheets by means of company-internal directions concerning the responsibility and the obligatory
registration, work organisation, qualification of the personnel, etc. lies within the customer’s
responsibility.

In accordance with chapter 6, the system has to be switched off before starting works on
components of the air humidification system BS and is to be secured against unintended putting
into operation (switch off the control device, shut off the water supply and make the systems
pressure-less).

Pay attention to all local safety regulations:

• Concerning dealing with electric and electronic devices that are supplied from the
mains.

• Concerning the installation of water systems.

Badly maintained air humidification systems may be harmful to health. Therefore it is obligatory
to comply with the intervals of maintenance.

If it is to be assumed that the air humidification system BS cannot be operated without danger
any more, it has to be switched off immediately and to be secured against unintended activation.
This can be the case under the following circumstances:

• if components of the system are damaged

• if the system does not work correctly any more

• if connections or pipes are leaking.

The air humidification system BS is to be operated only within the framework of the specified
operating conditions.

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- CAUTION! When the air humidification system BS is installed in a room without water

drainage, water level sensors that safely close the water supply in case of a possible leakage
in the water-supply system are to be installed in the room.

- In order to avoid water damage, do not store any materials that can be damaged by water

directly under the atomiser nozzle.

- CAUTION! Danger of corrosion! To avoid dangers, do not store any corrodible components

within the area of the aerosol flow (no rebounding surface for the aerosols).

- CAUTION! Depending on the content of minerals in the pipe water or the treated water

respectively, scale deposits that are more or less pronounced can form. Sensitive materials
and devices have to be protected appropriately or to be moved out of this area.

- Apart from the works described in this direction s, no further interventions have to be carried out on

the air humidification system BS.

- Use only the original accessories and spare parts of NORTEC.

- Without the written consent of NORTEC, no changes may be carried out on the air humidification

system BS.

- In case of changes on the system, an approval carried out by the NORTEC customer service or by

persons authorised by NORTEC has to be carried out previous to the first switching on.

3. Product survey

3.1 System versions BS

The DRAABE air humidification system BS is available in 2 different versions:

- BS5

- BS10

Besides, both systems BS5 and BS10 are absolutely identical, with one single difference. Therefore they
are jointly dealt with in this documentation. The BS5 is fitted with only one nozzle, whereas the BS10 is
fitted with two nozzles. So the only difference is their atomising capacity.

3.1.1 System BS5/10

System description

The system BS mainly consists of atomisers which atomise the water supplied to them into the
air. All system components are integrated into one plastic housing. The atomising nozzles are
assembled firmly onto the upper part of the housing. In addition, every device is fitted with a
hygrostat which measures the relative humidity (indicated in per cent, r.h. in %) in the ambient
air. It compares the measured value with the pre-selected set point and thus controls the device.

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Individual smaller rooms or large halls can be humidified, depending on the quantity of water that
is available and the length of the hoses. The atomisers are designed for wall mounting and are
delivered in a version that is ready for connection.

Designation Number of nozzles

BS5 1

BS10 2

Max. humidifying capacity

at an atomising pressure of 5 bar (72

1)

psi)

*

5 l/h

*

10 l/h

* Important! This data depends on the setting selected for the device.

Both devices are two-component atomisers. That means that they need both water and
compressed air for atomising.

View of the system BS (the illustration shows the BS10)

Transformer
115VAC/48VAC

Atomiser BS 10

Mounting rail

tap water
Air compressor

Pressure reducer

5 micron filter

Psi

Pressure reducer

Filter, 5 micron

The atomisers are fitted with a UV-C bioreactor.

Water and air systems

Pure water

Compressed air

max 30 PSI

max 105 PSI

open open

closedclosed

++

Required Value

40 50 60

30

70

20

80

rel. humidity %

Pure water atomizer

i
B

Power

Atomizing

PSI PSI

Pure water

Water and air systems

Pure water

Compressed air

max 30 PSI

max 105 PSI

open open

closedclosed

++

Required Value

40 50 60

30

70

20

80

rel. h um i d it y %

m

e
t
s

y

S
e
f
a

S
o

Compressed air

Pure water atomizer

PSI PSI

Pure water

m
e
t
s

y

S
e
f

a
S

o
i
B

Power

Atomizing

Compressed air

Water and air systems

Pure water

Compressed air

max 30 PSI

max 105 PSI

open open

closedclosed

++

Required Value

40 50 60

30

70

20

80

rel. humidity %

Pure water atomizer

S

o
i
B

Power

Atomizing

PSI PSI

Compressed air

Pure water

m

e
t
s
y

S
e
f
a

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3.2 Functional description

3.2.1 Functional description systems BS5/10

The device is available in two versions. The BS 5 and the BS 10 are controlled by a
hygrostat that is placed in the atomiser head.

The device consists of two components: the wall bracket (1) and the atomiser (2).

The wall bracket consists of the shut-off valves for water (3) and air (4) as well as the supply
lines for water (5), air (6) and operating voltage (7).

The atomiser consists of the set point adjuster (8), the nozzle (9) as well as the LED
indicator lights standby (green) and atomisation (red) (10).

The desired air humidity is pre-selected on the set point adjuster. When the value falls
short of the chosen value, the device switches itself on (LED atomisation emits light).
When the set point is reached again, the device switches itself off.
If the systems BS 5/10 switches itself off, the compressed air supply remains switched
on, also after the water was switched off, for about 1 minute (air-blowing).
The standby indicator lights up as soon as the operating voltage (48Vac) is available on
the device.

NOTE: Maximum inlet pressure water is 3bar (43psi)
Maximum inlet pressure air is 6bar (87psi)

Check the pressure values of the manometers
Water 0,2 – 0,4 bar (2.9-5.8psi) (11)
Air 3 – 4 bar (43-58psi)(12)

4

3

89

Water and Air Systems

Pure Water

Max. 3 bar

on on

+

off off

40 50 60

70

30

20

80

Compressed A ir

Max. 6 b a r

+

11

The atomisers can be
adjusted by means of the
ball-and-socket (13) joint.

1

2

13

12

10

6

5

7

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4. Basic principles for planning

The basic principles for planning described below are theoretical ones. In practice, the necessary

humidification capacity is influenced by parameters that can not be covered by this documentation.

For this reason, the values that were determined in theory have to be complemented by practical

values or corrected in many cases. Our advisors will be pleased to assist you.

4.1 Notes on the planning of air humidification systems in one area

Proceed as follows when selecting and/or dimensioning the air humidification system BS:

- Determining the volume of the room and the air changes

- Determining the set points (temperature and humidity/relative humidity)

- Determining the humidification areas

- Calculating the maximum humidification capacity

- Defining the device requirements

The chapter below contains all necessary pieces of information on the individual planning steps.

For every planning step, a calculation example based on assumed system data has been

included. The three different examples are supposed to illustrate the procedure. Naturally it is not

possible to cover all applications by means of examples. The air humidification system BS offers a

variety of solutions for individual air humidification in a large variety of rooms .

If you have any further queries or problems, the NORTEC sales team will be glad to help.

Phone:+ 1 613 822 0335

4.1.1 Example 1 (BS10)

In this case, only one room is to be humidified. As every atomiser is fitted with its own hygrostat,

different zones within one area (room) can be humidified individually.

EXAMPLE 1

A DRAABE air humidification system BS for direct room air humidification is to be installed in the

paper store of a large printing works. The following data is available:

Room measurements (l x w x h) in ft: 98.0 x 66.0 x 11.5

Number of air changes per hour: 2.2

Outside air conditions in winter: 5°F/90 % r.h.

Desired room temperature: 70°F

Desired relative air humidity: 53 % r.h.

Areas: One

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