OPERAT I NG INSTRUCTIONS
Steam Humidifier
2401917 EN 0801
Nordmann NOVAP 3000
2
Introduction
List of contents
1. Installation
2. Water connections
3. Electrical connections
4. Putting into operation
5. Servicing and maintenance
6. Rectifying faults
7. Spare-parts list...............................................................................................................................................................................................................
8. List of options..................................................................................................................................................................................................................
9. Technical specifications..............................................................................................................................................................................................
You have purchased a NORDMANN steam humidifier which, provided
you observe the operating instructions, will ensure fully automatic
operation and reliable, low-maintenance service. Therefore, read these
operating instructions carefully and pay particular attention to
the safety instructions and warnings.
Should you have any queries that go beyond the scope of these operating
instructions, please contact the company from which you purchased the
humidifier. As the manufacturers, we are, of course, always ready to be
of assistance, since we want all of our customers to be completely satisfied
with our products.
1.1 Dimensions...................................................................................................................
1.2 Steam nozzle...............................................................................................................
1.3 Fitting the humidifier...............................................................................................
1.4 Fitting the steam-distribution pipe.....................................................................
1.5 Fitting the blowers....................................................................................................
1.6 Laying the steam hose..............................................................................................
1.7 Laying the condensate hose...................................................................................
2.1 Quality of the water..................................................................................................
2.2 Water intake and drainage.....................................................................................
3.1 Safety instructions.....................................................................................................
3.2 Control voltage..........................................................................................................
3.3 Heating voltage..........................................................................................................
3.4 Proportional adaptor (option)...............................................................................
4.1 How the humidifier works......................................................................................
4.2 The steam cylinder....................................................................................................
4.3 The SC-System (option)..........................................................................................
4.4 Putting the humidifier into operation................................................................
4.5 Automatic operation.................................................................................................
4.6 Setting the output limitation................................................................................
4.7 Indications of the two-colour LED.......................................................................
4.8 System and servicing indications..........................................................................
4.9 Remote indication.....................................................................................................
4.10 Safety functions.........................................................................................................
5.1 Cleaning and replacing the steam cylinder.......................................................
5.2 Drainage strainer in the steam cylinder.............................................................
5.3 Removing the electronics unit...............................................................................
5.4 Taking the humidifier out of operation..............................................................
5.5 Regular servicing........................................................................................................
6.1 The humidifier produces insufficient or no steam..........................................
4
7
7
8
10
11
12
13
13
14
15
15
16
17
18
18
20
20
20
21
21
22
22
22
23
24
24
24
25
26
26
27
3
Safety instructions
Very important!
Proper use
Alterations to the humidifier
Safety instructions
Please read and observe the operating instructions before fitting and
putting into operation.
The operating instructions should always be readily available and kept
in the immediate vicinity of the humidifier.
All work must be done only by persons who are familiar with the product
and are sufficiently qualified to perform the work.
The NOVAP 3000 steam humidifiers have been designed and constructed in
accordance with the latest technology and the accepted safety regulations.
However, if misused, the humidifier can present a danger to both the user
and third parties.
Apart from these safety instructions, you should observe all national and
local regulations.
The NOVAP 3000 steam humidifiers are intended solely for indirect (via a
steam-distribution pipe in a ventilation duct) or direct (with either a
separate or a humidifier-mounted fan) humidification. Used in any other
way, or in a way that goes above and beyond the one described above, is
contrary to its intended usage. The manufacturer/supplier cannot be held
responsible for any damage resulting therefrom. The user shall bear the risk.
Without NORDMANN’s written approval, no alterations may be made to
the humidifier itself, the components or the accessories.
The use of non-original spare parts may lead to our refusal to accept
responsibility for any damage arising therefrom.
Whenever you see either of these signs,
particular care must be taken.
!
1.1 Dimensions
Dimensions of the NOVAP 3000 humidifiers
Fixing holes for type 64-90 kg/h (mm) Fixing holes for type 4-45 kg/h
4
BreiteTiefe
Höhe
1. Installation
Type Fig. mm mm mm Steam outlet Drainage Empty weight Full weight
ABC kgkg
4 1 390 585 230 1 x Ø 22 1 x Ø 22 11 14,5
8 1 390 585 230 1 x Ø 22 1 x Ø 22 12 18,5
15 1 470 645 305 1 x Ø 35 1 x Ø 22 17 32
23 1 470 645 305 1 x Ø 35 1 x Ø 22 18 33
32 1 525 715 360 1 x Ø 35 1 x Ø 22 28 53
45 1 525 715 360 2 x Ø 35 1 x Ø 22 29 54
64 2 975 730 385 2 x Ø 35 2 x Ø 22 62 112
90 2 975 730 385 4 x Ø 35 2 x Ø 22 64 114
Fig. 1
A
B
Befestigungsbohrungen
bei Geräte ab 15kg
550
300 300
930
Fig. 3 Fig. 4
4 holes required
for humidifiers of
15 kg and above
3 holes required
for humidifiers of
4 and 8 kg/h
Type A B
(mm) (mm)
4 - 8 kg 100 350
15-23 kg 180 410
32-45 kg 220 450
Tiefe Brei te
Höhe
Fig. 2
C
A
B
C
A
B
5
Dimensions of the steam-distribution pipes
A
DC
B
ø8
3%
138
116
105
116
100x100
Fig. 5
3%
A
C
D
M
6
B
ø8
118
150
130
100
75
Fig. 6
Type/mm A B C D Fig. Art. no.
22-300 300 Ø 22 176 60 5 902 00 00
22-450 450 Ø 22 300 70 5 902 00 01
22-650 650 Ø 22 504 70 5 902 00 02
22-850 850 Ø22 696 70 5 902 00 03
35-300 300 Ø 35 200 55 5 902 00 04
35-450 450 Ø35 300 80 5 902 00 05
35-600 600 Ø 35 425 90 5 902 00 06
35-900 900 Ø 35 680 110 6 902 00 07
35-1200 1200 Ø35 935 110 6 902 00 08
35-1500 1500 Ø35 1275 110 6 902 00 09
Dimensions of the 4-23 kg/h steam blowers
6
Fig. Type A B C D E F G H I
10 32 kg/h Ø 505 255 Ø M10 185 235 Ø 35 Ø 8
11 45 kg/h 200 505 255 350 M10 185 235 Ø 2 x35 Ø 8
A
B
==
B
A
==
Fig. 7
Fig. 8 Fig. 9
BA
D
E
CGF
Fig. 10 Fig. 11
BC
A
D
E
G
F
H
J
B
C
A
D
E
G
F
H
J
AB
D
C
E
FG
Type A B
4 - 8 kg 100 130
15-23 kg 180 240
Fig. Type A B C D E F G
mm mm mm mm mm mm mm
8 4 - 8 kg/h 230 205 220 145 165 Ø 22 Ø 8
9 15-23 kg/h 310 275 295 255 285 Ø 35 Ø 8
Dimensions of the Turbo 32
and 45 kg/h steam blowers
Fixing holes for
4-23 kg/h steam blowers
Dimensions of the 4-23 kg/h steam blowers
Type 4-8 kg/h Type 15-23 kg/h
7
1.2 Steam nozzle
1.3 Fitting the humidifier
Positioning the humidifier
For smaller outputs of up to 4 kg/h, we offer a steam nozzle which can
be either fitted in air ducts, for instance, or used for direct room
humidification. The rules for vaporisation lines (lines needed to mix
the steam adequately with air) must be observed here, too.
When the steam nozzle is employed, the length of the steam hose
should not exceed 1.5 metres.
All installation work must be performed by trained personnel.
The customer himself is responsible for verifying their qualifications.
When fitting the humidifier, use only the material supplied with the unit
and observe the various minimum distances that have been stipulated.
To open the humidifier, turn the screw, using the correct screwdriver,
in an anti-clockwise direction; the door to the water componentry or the
electrics then opens. To close, simply push back into place (no screwing
down is necessary).
Ensure that there is sufficient room to perform servicing
and maintenance work, and that the unit is easily accessible.
To facilitate such work, mount the unit at eye level.
We recommend that you fit the humidifier as near as
possible to the steam-distribution pipes. The highest degree of
efficiency is attained when the humidifier is linked to the
steam-distribution pipe by the shortest possible steam hose.
When installing the double units sizes 64 and 90 kg/h next to
each other, ensure that each drainage pipe is fed to a funnel of
adequate size.
320
380
100 100 100
!
Fig. 12
Fig. 13
1.4 Fitting the steam-distribution pipe
Guidelines on fitting the steam-distribution pipes
Various fitting methods
All installation work must be performed by trained personnel.
The customer himself is responsible for verifying their qualifications.
The visible jet of steam issuing from the steam-distribution pipe
dissipates in the air only after a certain distance. In order to prevent
condensation, a certain minimum distance to other parts of the
installation (such as ventilators, filters or pipe bends) must, therefore,
be maintained.
The steam-distribution pipes can be fitted either vertically or horizontally,
though you must ensure that the steam outlets are always vertical
to the air flow. If fitted horizontally, these apertures must be at the top.
An adhesive template is supplied with each steam-distribution pipe
to facilitate installation in, for instance, an air duct. NORDMANN’s
steam-distribution pipes are designed so that, if fitted straight, there
is automatically a slight decline of 3% which ensures that any condensate
flows back again.
The ends (reverse side of mounting plate) of the longer steam-distribution
pipes (types 35-900, 35-1200 and 35-1500) are equipped with an M6
fixing bolt.
!
2/31/3
min 300
8
Fig. 14
A
=
=
A
B
Fig. 16 A = min. 250
B = min. 150
Fig. 15 A = min. 200
9
Steam-distribution pipe fitted on suction side
Because of the under-pressure in the appliance or duct part,
condensate may be present in the steam-distribution pipe.
If there is an outlet in the empty part (intended for the
distribution pipes) of the humidifier, the condensate can be bled
off in the immediate vicinity. An alternative method
of bleeding off the condensate can be seen in the diagram.
Fig. 22
Pressurecompensation
hose
Stench trap
Type: Sperrfix 3
Tight-fitting
rubber bung
A
B
C
D
A
B
A
B
C
CC
A
B
B
B
=
=
=
B
=
A
Fig. 19 A > 500
B = min. 100
Fig. 20 A > 500
B = min. 150
C = min. 0.15 A
Fig. 17 A > 300
B = 0.5 A
Fig. 18 A > 350
B = min. 150
C = 0.3 A
D = min. 100
Fig. 21 A = min. 175
B = min. 100
1.5 Fitting the blowers
Minimum distances for steam blowers of type 4-23 kg/h
Minimum distances for steam blowers of type 32-45 kg/h
Technical specifications for steam blowers
All installation work must be performed by trained personnel.
The customer himself is responsible for verifying their qualifications.
The steam blower for distributing the steam in the room can be fitted
either directly onto the humidifier itself (excepting types 32, 45, 64 and
90 kg) or onto a wall.
For the humidifier to work best, correct steam distribution is essential.
For this reason, you must observe the minimum distances when installing
the equipment.
B
A
10
!
Fig. 23
Fig. 25Fig. 24
Max. steam Air volume Power Nominal Weight Steam pipe Condensate Noise
output m
3
/h supply rating kg H pipe G level (1m)
4 kg/h-8 kg/h 110 200/240 V 25 W 5 Ø 22 mm Ø 8 mm 46 dB (A)
15 kg/h-23 kg/h 650 50/60 Hz 170 W 15 Ø 35 mm Ø 8 mm 54 dB (A)
32 kg/h 800 220/240 V 110 W 8 Ø 35 mm Ø 8 mm 72 dB (A)
45 kg/h 800 50/60 Hz 110 W 8 2 x Ø 35 mm Ø 8 mm 72 dB (A)
450 mm
min.
15 m
Type 32: min. 1500 mm
Type 45: min. 2000 mm
450 mm
Type
A B
min. min.
4 kg 600 mm 3 m
8 kg 900 mm 5 m
15 kg 1000 mm 7 m
23 kg 1000 mm 10 m
1.6 Laying the steam hose
Installation material
11
The steam hose should be kept as short as possible. It should not be
possible to block or obstruct the steam supply lines in any way.
Furthermore, they must be protected from outside interference (e.g.
deformities, kinking etc.).
After the hose has been laid, it is advisable to re-check everything when
the hose is warm.
It is equally important to avoid condensation pockets in the hose.
Any curves should have as large a radius as possible.
If a hose is used for the steam line, it must be the original one supplied
by NORDMANN. If other hoses are utilised, NORDMANN cannot be held
responsible for any damage that may occur.
A hose clamp should be used to link the hose to the steam-distribution
pipe.
When laying the steam hose in pipes, cable ducts etc., you must verify their
resistance to high temperature (min. 100 °C). All insulation material must
also be checked for its resistance to high temperature.
If the steam line installed is of copper, small radii should be avoided
wherever possible. Every bend causes an additional resistance. A steam line
of copper must have the same diameter as the hose.
If the steam lines are long with a lot of bends and a relatively high internal
duct pressure, water may be continuously forced out of the steam cylinder,
which impairs performance.
Correctly installed
Fig. 26
300
min 20%
1.7 Laying the condensate hose
It is advisable to lay the condensate hose as near to the vertical
as possible and to feed the condensate either directly into an open
funnel or below the siphon.
If the steam-distribution pipe is fitted above the humidifier, the condensate can be fed back to the unit by placing the end of the hose in the
filling cup. In this instance, a small siphon should be formed with the
condensate hose.
If the condensate is drained off directly, it is advisable to feed back
the condensate hose separately. The end of the condensate hose should
be in the open air. If the end of the hose is submerged in water, the
condensate is prevented from draining away.
12
300
5%
Fig. 27
Fig. 28
Fig. 29
Fig. 30
Correctly installed
Wrongly installed
Correctly installed
Condensate
fed back to
the unit
Condensate
drained off
separately
300
2.1 Quality of the water
2.2 Water intake and drainage
Connecting to the cold-water supply, with stop cock
13
NORDMANN humidifiers use ordinary tap water for the production of
pure steam. The electrical conductivity should be between 125 and 1250
microsiemens per cm.
The hardness of water is measured in accordance with the international
unit millimol, calcium and magnesium ions per litre (mmol/l), previously
the degree of German hardness (DH):
Soft water: up to 1.3 mmol/l; up to 7° DH
Fairly hard water: 1.3 to 2.5 mmol/l; to 7-14° DH
Hard water: 2.5 to 3.8 mmol/l; 14 to 21° DH
Very hard water: over 3.8 mmol/l; over 21° DH
Other international units: 1° DH = 1.79° French hardness
1° DH = 1.25° English hardness
1° DH = 1.05° American hardness
1° DH = 10 mg/l CaO
1° DH = 17.9 mg/l CaCO
3
(ppm)
NORDMANN’s electrode steam humidifiers allow you to use water ranging
from soft to very hard, without the need for prior treatment. However,
for fairly hard water and above, we recommend the use of the SC system
(NORDMANN’s self-cleaning system), since this greatly reduces the
amount of maintenance required for the cylinder.
All installation work must be performed by trained personnel.
The customer himself is responsible for verifying their qualifications.
Please observe local regulations concerning the connection of appliances
to the pressure and drainage systems.
The humidifiers are designed to operate on ordinary tap water. If you
intend using treated or de-mineralised water, consult your NORDMANN
representative beforehand.
Where the water pressure is between 1 and 10 bar (0.1 to 1 MPa), the unit
can be connected directly to the water supply. If it is over 10 bar (1 MPa),
connection must be via a pressure-reduction valve (set to 4-6 bar,
= 0.4-0.6 MPa).
!
2. Water connections
3.1 Safety instructions
In any case, the water feed pipes that you have laid
must be flushed thoroughly before connecting them
to the humidifier. You should use copper piping only.
Note that the drainage facility should provide the
possibility of performing cleaning and maintenance.
The drainage pipe should have a decline to the
drainage system of at least 5%.
A fine filter should be fitted at the water intake
to the humidifier; this prevents the rapid build-up of
impediments in the inlet filter of the inlet valve.
All work pertaining to the electrical installation must be carried out
by qualified personnel only. The customer is responsible for verifying
the qualifications of the technicians concerned.
Before performing any electrical work, all power to the humidifier must be
disconnected.
Please observe local regulations concerning electrical installations.
The installation must be fitted with a device which disconnects the unit
(with a contact opening of at least 3 mm) on all phases from the mains
power supply.
NORDMANN humidifiers are designed to be connected to the earth
lead and are categorised as belonging to Protection class 1 for electrical
equipment.
The connection details are provided in the wiring diagrams for each type
of unit. Each unit is supplied with the appropriate wiring diagram.
!
14
3. Electrical connections
Tap (supplied
by customer)
Drainage cup
horizontal
or vertical
Fine filter
(supplied by
customer)
3/4“
3/8“
Fig. 31
15
External fuses per phase (A)
3.2 Control voltage
3.3 Heating voltage
The standard control voltage of 220-240 V must be applied to terminals
L1 and N.
N.B.: When performing cleaning and maintenance work on the unit,
all power to the humidifier, including the control voltage, must be
disconnected.
The cross-section of the electrical wires and the minimum fuse size should
be chosen in accordance with the connection requirements (cf. technical
specifications) of the type of humidifier employed. The electric supply
cables must be connected to the unit’s terminals correctly. We recommend
to re-tighten the screw terminals after a few days.
424 824 434 834 1534 2364 3264 4564 6464 9064
16 25 10 16 25 35 50 70 2 x 50 2x70
16 25 10 16 25 35 50 70 2 x 50 2x70
16 25 10 16 25 35 50 70 2 x 50 2x70
422 822 432 832 1532 2362 3262 – 6462 –
20 50 16 25 50 63 100 – 2 x100 –
20 50 16 25 50 63 100 – 2x 100 –
20 35 16 25 50 63 80 – 2 x 80 –
Type
Heating voltage
380 V
400 V
415 V
Type
Heating voltage
220 V
230 V
240 V
3.4 Proportional adaptor (option)
Double units
6462 = 2 x 3262 6464 = 2 x 3264 9064 = 2 x 4564
The proportional adaptor can be either factory fitted or fitted subsequently
by the customer simply by inserting it onto the electronics unit.
The following control signals from humidity controllers can be processed:
0-2 V 0-5 V 0-10 V 0-16 V
0-20 V (SCS) 1-5 V 2-10 V 0-20 mA
4-20 mA potentiometer min. 135 Ohm
16
Type of Terminals Cross-section of Cross-section of Screw terminals
humidifier mm
2
heating wire mm
2
control cable mm
2
for heating voltage
4xx
822
8xx
1532
15xx
2362
23xx
3262
32xx
45xx
4
10
4
10
6
16
10
35
10
16
2,5
4
2,5
2 x 2,5
2,5
2 x 4
2 x 2,5
2 x 4
2 x 2,5
2 x 4
0,75
0,75
0,75
0,75
0,75
0,75
0,75
0,75
0,75
0,75
PG 11
PG 16
PG 16
PG 21
PG 16
PG 36
PG 21
PG 36
PG 21
PG 36
17
4.1 How the humidifier works
NORDMANN humidifiers use ordinary tap water to produce steam.
The water is converted directly into steam in a steam cylinder by
electrode heating using electrical energy. In so doing, the water acts
as the electrical resistance. Vaporisation occurs at atmospheric pressure
(non-pressurised).
The electronic control system, with its highly-integrated microcontroller,
regulates the vaporisation process in accordance with a new principle
developed by NORDMANN which allows rapid output changes to be made.
The humidifier adapts itself fully automatically to the quality of the water
used. Due to this ability to set the optimum water concentration in the
steam cylinder, the smallest of adjustments to the water level can effect
a change in the steam output. Therefore, the unit reacts quickly and
accurately to any setpoint changes. Because of its ultimate degree of
efficiency, this new type of control system ensures perfect drainage,
i.e. the process of water deconcentration in the cylinder.
The use of fuzzy logic technology improves the controllability. The
microcontroller of the NOVAP 3000 series works with fuzzy-logic
algorithms. This regulates the conductivity or mineral concentration in
the steam cylinder and achieves ideal operating conditions while,
at the same time, maximising the operational reliability. Furthermore,
the output fluctuations which occur during normal operation are kept
to a manageable minimum by the automatic water-intake and drainage
functions.
4. Putting into operation
S
E E
Fig. 32
Hydrodynamic
filling cup
S = maximum-level sensor
E = electrode
4.2 The steam cylinder
A regular check of the steam cylinder ensures trouble-free operation.
If the humidifier indicates U1 (LED flashing green), it can still be run for a
few days before the steam cylinder needs to be replaced. We recommend
that you keep a spare cylinder in stock for each unit.
NORDMANN’s steam cylinders are so economical that it is usually cheaper
to replace the cylinder than to clean it. To clean the cylinder, it should first
be emptied by pressing the black button for manual drainage located on
the electronic print (see Fig. 34) and then removed. After the drainage
filter has been taken out, the cylinder can be well flushed with tap water
(using no chemical substances).
The SC-System is a patented self-cleaning system developed by
NORDMANN for its electrode steam humidifiers. Because the minerals are
kept in suspension, there is little accumulation of deposits on the floor of
the cylinder. The loose minerals are flushed away during normal drainage
operations. The steam cylinder’s service life is considerably lengthened and
the time spent on maintenance is reduced.
The serviceable life of a steam cylinder is dependent on both the quality of
the water supply and the unit’s actual operating hours.
18
4.3 The SC-System (option)
19
Lifetime of a steam cylinder at 100% steam output
10
20
30
1000500 1500 2000
t (h)
°d Härte
Fig. 33
1°DH = 1,25° English hardness
1°DH = 1,79° French hardness
1°DH = 1,05° American hardness
1°DH = 17,9 mg/I CaCo
3
(ppm)
Hours
with SC-System
without* SC-System
ºDH (German hardness)
*but cylinder is flushed periodically
4.4 Putting the humidifier into operation
4.5 Automatic operation
4.6 Setting the output limitation
After the steam hose, water feed pipe, drainage pipes and electrical cables
have all been correctly connected, the NOVAP 3000 humidifier can be
switched on using the black power switch. As soon as the humidistat or
humidity controller demands humidification, the green Humidification LED
lights up, the contactor is activated and, soon after, water is fed into the
steam cylinder, whereupon fully automatic operation commences.
Of course, the humidifier will operate automatically only if (a) it was
installed by a specialist and (b) the shut-off valve in the water feed pipe is
open.
After the water in the steam cylinder has been heated up, the production
of steam begins.
During the start-up phase, or after a new replacement cylinder has been
fitted, the maximum water level, or Niveau max. can be attained. When
Niveau max. has been reached, the inlet valve closes briefly; this is a
normal occurrence during the steam cylinder’s concentration phase. The
length of this phase can differ; it lasts until the cylinder has reached
the nominal rating. When the Niveau max. is attained, it will be indicated
by a red flash in the green colour of the LED.
The NOVAP 3000 series’ special electronic controls unit with microcontroller
regulates all operations automatically, so that the user does not need to
take any action or make any settings during normal running.
The NOVAP 3000 series enables an adaptation of the steam
output. The steam output can be set from 20% to 100%
capacity. For setting the output limitation, you must open the
electric compartment and turn the potentiometer on the
electronic print. Turning clockwise increases the steam output
and turning anticlockwise reduces the steam output. All
humidifiers are set ex works to 100% output.
20
Fig. 34
Potentiometer
Coding switches
Switch “manual drainage”
21
4.7 Indications of the two-colour LED
4.8 System and servicing indications
Operation
Niveau max. attained
Manual drainage open
Code U1: Servicing signal
Code U2: Excess current
Code U3: Humidifier fills continuously
Code U4: Microcontroller uncoded
The newly-developed electronic controls unit with microcontroller
continuously monitors the operations of the NOVAP 3000 humidifier. Any
deviations from the operating condition (U codes) are shown with
the two-colour LED. The status of the LED can be shining continuously or
flashing in the red and green colours. The combination of these
different possibilities permits the indication of all U codes.
LED shining green continuously
The humidistat or humidity controller demands humidification. The NOVAP
3000 humidifier operates automatically. Without demand of humidity the
LED remains dark.
red flash in the shining green of the LED
Occurs when the Niveau max. sensor has been attained.
LED flashing red-green-red-green
When the manual drainage is activated by pressing the black button on
the electronic print.
LED flashing green
The steam cylinder can no longer attain the nominal output and needs,
therefore, to be cleaned or perhaps replaced. A visual inspection of the
inside of the cylinder is necessary to be able to decide whether it needs
replacing. Code U1 is purely a servicing code; the unit does not switch off
automatically. The humidifier continues to function at a reduced output.
Acknowledgement is effected by switching the unit off and on with the
black power switch.
LED shining red continuously
Whenever there is excess current (140% of the nominal value) during normal operations, the humidifier switches itself off automatically for safety
reasons. After the fault has been rectified, the humidifier is put back into
operation by switching the unit off and on with the black power switch.
LED flashing red
Either there is no heating phase or no water in the cylinder due to the
water supply having been cut off. The humidifier switches itself off
automatically after 30 minutes and is put back into operation by switching
the unit off and on with the black power switch.
LED flashing red-red-green-green
This signal appears if a replacement electronic controls unit has been
fitted to the humidifier without being coded. The humidifier is prevented
from operating. The signal disappears as soon as the electronic controls
unit has been coded.
4.9 Remote indication
4.10 Safety functions
5.1 Cleaning and replacing the steam cylinder
The standard, potential-free relay output enables the collective alarm
message to be displayed remotely.
NORDMANN humidifiers are protected against running dry, i.e. the power
is cut off automatically as soon as the electrodes in the steam cylinder
protrude above the water level.
If current consumption becomes excessive (25% above the normal level),
the outlet valve is opened automatically. Because the electrodes are then
in contact with less water, current consumption falls back to the nominal
value.
If current consumption fails to fall below 140% of the nominal level
even after several drainage operations, the humidifier soon turns itself off
automatically, and Code U2 appears on the two-colour LED.
22
!
5. Servicing and maintenance
Before commencing, switch off all power to the humidifier and
disconnect the unit from the mains.
The serviceable life of the steam cylinder depends on both the hours run
and the hardness of the tap water used.
The cylinder should be replaced when the electrodes have become
insulated so much (because of calcification) that the required steam
output cannot be reached. At the same time, the water level in the
cylinder continuously touches the Niveau max. sensor. In this case, the
specially-constructed water filling cup offers additional protection
by feeding excess water directly into the overflow facility, allowing it
simply to drain away.
Whenever Code U1 appears, you should proceed as described on page 23.
However, the humidifier can still be run for some time before you need to
replace the steam cylinder.
23
• Open the drainage valve using the manual drainage switch (black round
button) located on the electronic print; the cylinder then empties itself
completely. Let the cylinder cool down.
• Before proceeding further, disconnect the unit from the mains.
• Loosen the clamp on the steam hose, pull off the hose and remove
the electrical plug from the cylinder; the cylinder itself can now be
removed.
• To fit the new unit, reverse the above procedure. It is advisable to
wet slightly either the O-ring seal on the drainer or the outside of the
cylinder’s drainage aperture, since this makes it easier to fit the new
cylinder.
The humidifier is re-started in accordance with the recommendations
detailed in the chapter entitled “Putting the humidifier into operation”.
All NORDMANN steam cylinders are fitted with a removable drainage
strainer which can be extracted easily for cleaning.
The cylinder can then be put back into place and the humidifier put back
into operation.
Fig. 35
black
red
white
black
red
white
!
5.2 Drainage strainer in the steam cylinder
Procedure for replacing the steam cylinder
5.3 Removing the electronics unit
5.4 Taking the humidifier out of operation
5.5 Regular servicing
All work pertaining to the electrical installation must be carried out
by qualified personnel only. The customer is responsible for verifying
the qualifications of the technicians concerned.
Before removing the electronics unit, all power to the humidifier must
be switched off.
The electronics unit comprises a processor pcb (printed circuit board) and a
small LED-pcb. All pcb’s have plug-in connections, which facilitates their
replacement.
Should you wish to take the humidifier out of operation for a long period
of time (e.g. in summer or when the air-conditioning system is inoperable),
the steam cylinder must be emptied.
Before proceeding, switch off all power to the humidifier.
Regular servicing helps to maintain the operability and reliability of the
humidifier.
All work must be carried out by qualified personnel only. The customer is
responsible for verifying the qualifications of the technicians concerned.
Before commencing work, all power to the humidifier must be
switched off.
The following checks should be carried out on a regular basis:
• Inspect and clean the steam cylinder.
If there are any deposits in the steam cylinder, you should remove the
drainage filter and flush the cylinder thoroughly with tap water (using
no chemical substances). If the electrodes are worn, it is time to replace
the steam cylinder.
• Inspect the steam, condensate and water hoses.
Check that they are still correctly laid and that the hose clamps are still
tight. Check that the hoses are still in good condition.
• Inspect and clean the inlet and outlet valves.
If worn, or covered in scale deposits, replace the valves.
• Check the drainage cup and, if necessary, clean or replace it.
24
!
!
!
25
6.1 The humidifier produces insufficient
or no steam
The following causes are possible:
When a fault occurs, the problem is often sought only on the humidifier,
though the fault may have been caused by a problem in the plant.
For successful trouble-shooting, some knowledge of plant technology
(air-conditioning, controls) is necessary.
You should proceed in the following order:
• Observe
• Work out the problem
• Take action
• The steam cylinder is new and merely in the start-up phase
• The humidistat/humidity controller is not demanding any humidity
• A safety element, such as a maximum humidistat etc., is not allowing
humidification to take place
• The safety link between terminals L1 and H has not been made
(if a proportional adaptor is used)
• The heating power is off or the electrode plugs have not been inserted
• There is no water in the steam cylinder because the water supply has
been interrupted (e.g. stop cock is closed etc.)
• The filter or the nozzle in the inlet valve is blocked or damaged
• An output limitation has been set
• The cylinder needs replacing
• The humidifier is too small for the job
• The current transformer is either defective or not connected correctly
• The contactor coil is defective
• The steam hose is blocked or has a kink in it
6. Rectifying faults
26
7. Spare-parts list
8. List of options
Detailed drawings of spare parts with their article number
are available from both your NORDMANN representative and the
manufacturer.
All options can be fitted either at the factory or subsequently.
SC-System (Pat. pending)
Self-cleaning system for electrode humidifiers of NORDMANN.
Proportional adaptor
Allows the steam output of the NOVAP 3000 humidifiers to be set
anywhere between 20 and 100%. The proportional adaptor can be simply
inserted onto the electronic controls unit.
Step adaptor
Allows the steam output to be regulated in 2, 3 or 4 stages. The adaptor is
simply inserted onto the electronic controls unit.
Steam output indication
With five LEDs, it indicates the level of steam output in % of nominal
capacity (20, 40, 60, 80 and 100%). The option for double units is equipped
with an output indication for each cylinder.
27
9. Technical specifications
Model Type 424 434 824 834 1534 2364 3264 4564 6464 9064
Heating voltage* Volt 400 Volt, 50/60 Hz
Number of phases 1 3 1 3 3 3 3 3 3 3
Heating current A 7.5 4.3 15.3 8.8 16.5 25.3 35.1 49.4 2x35.1 2x49.4
Model Type 422 432 822 832 1532 2362 3262 6462
Heating voltage* Volt 230 Volt, 50/60 Hz
Number of phases 1 3 1 3 3 3 3 3
Heating current A 13.0 7.5 26.5 15.3 28.6 43.9 61.0 2x61.0
Steam output kg/h 4 4 8 8 15 23 32 45 64 90
Output range kg/h steam 0.8-4 0,8-4 1.6-8 1.6-8 3-15 4.6-23 6.4-32 9-45 6.4-64 9-90
Nominal power kW 3 3 6.1 6.1 11.4 17.5 24.3 34.2 2x24.3 2x34.2
Control voltage** Volt 220-240 Volt, 50/60 Hz
Construction data:
Steam cylinder qty 1 1 1 1 1 1 1 1 2 2
Dimensions width mm 390 390 390 390 470 470 525 525 975 975
height mm 585 585 585 585 645 645 715 715 730 730
depth mm 230 230 230 230 305 305 360 360 385 385
Weight (empty) kg 11 11 12 12 17 18 28 29 62 64
Operating weight (max.) kg 14.5 14.5 18.5 18.5 32 33 53 54 112 114
Accessories:
Humidity controller qty 1 1 1 1 1 1 1 1 1–2 1–2
Control adaptors:
Proportional adaptor qty 1 1 1 1 1 1 1 1 2 2
Step adaptor qty 1 1 1 1 1 1 1 1 2 2
Steam nozzle qty 1 1
Steam-distribution pipes for duct use:
22-300 mm, 22-450 mm,
22-650 mm, 22-850 mm qty 1 1 1 1
35-300 mm qty 1
35-450 mm qty 1 1 2 4
35-600 mm qty 1 1 1 2 2 4
35-900 mm qty 1 1 1 2 2 4
35-1200 mm qty 1 1 1 2 2 4
35-1500 mm qty 1 1 1 2 2 4
Steam hoses:
Ø 22/29 mm qty x m 1 1 1 1
Ø 35/43 mm qty x m 1 1 1 2 2 4
Condensate hose:
qty x m 1 1 1 1 1 1 1 2 2 4
Steam blowers for direct room humidifi
cation:
Fitted onto humidifier qty 1 1 1 1 1 1
Fitted separately qty 1 1 1 1 1 1 1 1 2 2
* Standard heating voltage 400 V (380-415) or 230 V (220-240), 50/60 Hz. Also available: 200, 208, 277, 347, 440, 460, 480 and 500 Volt.
** Standard control voltage 220-240 V, 50/60 Hz. Others on request.
Ø 8/12 mm
CONSULTING, SALES AND SERVICE:
Reg.No. 40002-2
Solutions for Indoor Climate
Manufacturer:
Nordmann Engineering AG
www.nordmann-engineering.com, info@nordmann-engineering.com
NORDMANN
ENGINEERING
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