nordmann econoVap
steam Humidifier
Operating instructiOns
NORDMANN
E N G I N E E R I N G
1 Safety Instructions
General Safety Instructions
The econoVap steam humidifier has been designed and constructed in accordance with the latest technology and
the accepted safety regulations. The user is obliged to pay attention to these safety instructions as well as the
specific regulations for installation and the safety and accident prevention regulations in the country of operation.
The operating instructions should always be readily available at the place of operation of the humidifier.
All installation and service work must be done only by persons qualified to perform such work.
Proper use
The steam humidifier econoVap is intended solely for indirect or direct air humidification according to this manual.
Used in any other way beyond this description is contrary to its intended usage.
The manufacturer/supplier cannot be held responsible for any damage resulting there from.
Alterations to the humidifier
Without NORDMANN’s written approval, no alterations must be made to the humidifier.
Only original spare parts and options are allowed to be used.
Safety signs
Attention, Warning, Danger:
This sign warns of a possible dangerous situation. Disregarding this warning can lead to an injury of the operator or
to a damage to the instrument.
!
Attention, Voltage:
This sign warns of dangerous electrical voltage. Disregarding this warning can lead to danger or injury of the user.
2 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 microcontroller, regulates the
S = maximum-level sensor
vaporisation process in accordance with the reliable principle developed
E = electrode
by NORDMANN, which allows rapid output changes. The humidifier
adapts itself automatically to the quality of the water used. Due to this
ability to set the optimum water concentration in the steam cylinder,
changes in the steam output are effected by minimal adjustments of the
water level, allowing the unit to react quickly and accurately to any set
point change. The use of fuzzy logic technology improves controllabili-
ty. The adaptive control technique regulates the conductivity/mineral
concentration in the steam cylinder achieving ideal operating conditions
while maximising operational reliability.
Hydrodynamic
filling cup
S
E
E
The output fluctuations, which occur during normal operation, are kept
to a minimum by the automatic water-intake and drainage functions.
Fig. 2.1
3
3 Installation
3.1 Dimensions
Dimensions of the units
Type
Dimensions
Fixing holes Steam outlet
Drainage
4–8 kg/h
15–32 kg/h
45–65 kg/h
Fig. 3.1
Fig. 3.3
Fig. 3.3
Fig. 3.2
Fig. 3.4
Fig. 3.4
1 x Ø 22
1 x Ø 35
2 x Ø 35
1 x Ø 22
1 x Ø 22
1 x Ø 22
210
354
195
Fig. 3.1
Fig. 3.2
335
340
490
Fig. 3.3
Positioning
Fig. 3.4
of the humidifier
100
100
100
Fig. 3.5
4
Dimensions of the steam distribution pipes
Type
A (mm)
300
B (mm)
Ø 22
C (mm)
176
D (mm)
60
Fig.
3.6
3.6
3.6
3.6
Art. no.
902 00 00
902 00 01
902 00 02
902 00 03
22-300
22-450
22-650
22-850
450
Ø 22
300
70
650
Ø 22
504
70
850
Ø 22
696
70
35-300
35-450
35-600
35-900
35-1200
35-1500
300
450
Ø 35
Ø 35
Ø 35
Ø 35
Ø 35
Ø 35
200
300
55
80
3.6
3.6
3.6
3.7
3.7
3.7
902 00 04
902 00 05
902 00 06
902 00 07
902 00 08
902 00 09
600
425
90
900
680
110
110
110
1200
1500
935
1275
A
C
D
3%
116
Fig. 3.6
A
C
100
75
D
3%
Fig. 3.7
3.2 Steam Nozzle
For smaller outputs of up to 4 kg/h steam, we offer a 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 used, the length of the steam hose should not
exceed 1.5 meters.
!
Fig. 3.8
5
Dimensions of the steam blowers 4-23 kg/h
Fig.
Type
A
mm
B
mm
C
mm
D
mm
E
mm
F
mm
G
mm
3.10
3.11
4–8 kg/h
230
310
205
275
220
295
145
255
165
285
Ø 22
Ø 35
Ø 8
Ø 8
15–23 kg/h
Fixing holes for the
steam blowers 4-23 kg/h
Dimensions of the steam blowers 4-23 kg/h
A
Type
4 - 8 kg
15-23 kg
A
100
180
B
130
240
=
=
B
A
B
A
A
=
=
C
F
G
C
F
G
Fig. 3.9
Fig. 3.10
Fig. 3.11
Dimensions of the Turbo steam blowers 32, 45 und 65 kg/h
Fig.
3.12
3.13
Typ
A
B
C
D
E
F
G
H
J
32 kg/h
Ø 200
505
505
255
255
Ø 35
Ø 35
M10
M10
185
185
235
235
Ø 35
Ø 8
Ø 8
45–65 kg/h Ø 200
2 x Ø 35
E
E
B
B
C
C
F
G
F
G
A
A
D
D
J
J
H
H
Fig. 3.13
Fig. 3.12
6
3.3 Fitting the humidifier
For the fitting of the humidifier use the material supplied with the unit. Observe the various minimum distances as
indicated in figure 3.5.
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 the unit is installed as near as possible to the steam-distribution pipe. The highest degree of
efficiency is attained when the humidifier is linked to the steam-distribution pipe by the shortest possible steam
hose.
3.4 Fitting the steam-distribution pipe
General guidelines for the installation:
The visible jet of steam issued from the steam-distribution pipe dissipates in the air only after a certain distance.
In order to prevent condensation, a certain distance to other parts of the installation (such as ventilators, filters or
pipe bends) must be maintained.
The steam-distribution pipes can be fitted either vertically or
horizontally, though it must be ensured that the steam outlets
are always vertical to the flow. If fitted horizontally, these
apertures must be at the top.
An adhesive template is supplied with each steam-distribution
pipe to facilitate the installation, for example in 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.
min 300
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.
Fig. 3.14
Various fitting methods:
Fig. 3.15
A = min. 200 Fig. 3.16
A = min. 250 Fig. 3.17
B = min. 150
A > 300
B = 0.5 A
Fig. 3.18
A > 500 Fig. 3.19
B = min. 100
A > 500 Fig. 3.20
B = min. 150
C = min. 0.15 A
A = min. 175
B = min. 100
7
Steam-distribution pipe fitted on suction side:
Because of the under-pressure in the appliance or the duct
part, condensate may be kept back in the steam-distribution
pipe. If there is an outlet in the empty part 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.
Pressure-
compensation
hose
Tight-fitting
rubber bung
Stench trap
Type: Sperrfix 3
Fig. 3.21
3.5 Fitting the blowers
For the humidifier to work best, correct steam distribution is essential. For this reason, the minimum distances must
be observed when installing the equipment.
Please note that only wall installation is possible with the econoVap.
Minimum distances for steam blowers 4-23 kg/h
Type
A
B
min.
min.
3 m
5 m
7 m
10 m
4 kg
8 kg
600 mm
900 mm
1000 mm
1000 mm
15 kg
23 kg
B
Fig. 3.22
Minimum distances for steam blowers 32-65 kg/h
450 mm
Typ 32: min. 1500 mm
Typ 45: min. 2000 mm
45
min.
15 m
Fig. 3.22
Fig. 3.22
8
Technical specifications steam blowers:
Max. steam
output
Air volume
m3/h
Power
supply
Nominal
rating
Weight
kg
Steam pipe
Condensate
pipe
Noise
level (1m)
4–8 kg/h
15–23 kg/h
32 kg/h
110
650
800
800
200/240 V
50/60 Hz
220/240 V
50/60 Hz
25 W
170 W
110 W
110 W
5
15
8
Ø 22 mm
Ø 35 mm
Ø 8 mm
Ø 8 mm
Ø 8 mm
Ø 8 mm
46 dB (A)
54 dB (A)
72 dB (A)
72 dB (A)
Ø 35 mm
45–65 kg/h
8
2 x Ø 35 mm
3.6 Laying the steam hose
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.
Installation Material
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-distri-
bution pipe.
When laying the steam hose in pipes, cable ducts etc., their resi-
stance to high temperature (min. 100 °C) must be ensured. 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 avoi-
ded wherever possible. Every bend causes an additional resi-
stance. 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 the performance.
Fig. 3.25
Possible installation
Wrong installation
Possible installation
5%
Fig. 3.26
Fig. 3.27
Fig. 3.28
9
3.7 Laying the condensate hose
It is advisable to lay the condensate hose as near to the ver-
tical 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 case a small siphon should be for-
med with the condensate hose.
Condensate
fed back to
the unit
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 submer-
ged in water, the condensate is prevented from draining away
freely.
Condensate
drained off
separately
Fig. 3.29
4 Water connections
4.1 Water quality
NORDMANN humidifiers use ordinary tap water for the production of pure steam. The electrical conductivity should
be between 125 and max. 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 in degrees of German hardness (DH).
Soft water:
Fairly hard water:
Hard water:
up to 1.3 mmol/l up to 7 ° DH
1.3 bis 2.5 mmol/l 7-14 ° DH
2.5 bis 3.8 mmol/l 14-21 ° DH
over 3.8 mmol/l over 21 ° DH
Very hard water:
Other international units:
1° DH = 1.79° French hardness
1° DH = 1.25° English hardness
1° DH = 1.05° US hardness
1° DH = 10 mg/l CaO
1° DH = 17.9 mg/l CaCO3 (ppm)
NORDMANN's electrode steam humidifiers function with 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 patented self
cleaning system), which greatly reduces the amount of maintenance required for the cylinder. The SC System is
available as option built-in ex works or as a retrofit option.
10
4.2 Water intake and drainage
Please observe the local regulations concerning the connection of appliances to the pressure and drainage system.
The humidifier is designed to operate on ordinary tap water only. If you intend to use treated or de-mineralised
water, consult your NORDMANN representative beforehand.
Where the water pressure is between 1 and 10 bar (0.1–1 MPa) the unit can be connected directly to the water
supply. If it is over 10 bar (1 MPa), connection must be made via a pressure-reduction valve (set to 4 – 6 bar or
0.4–0.6 MPa).
In any case the water feed pipes 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
for cleaning and maintenance. The drainage pipe should
have a decline of at least 5 %.
A fine filter should be fitted at the water intake to the
Tap provided
humidifier to prevent the rapid built-up of impediments in
by customer
the fine filter of the inlet valve.
3/4“
Drainage cup
3/8“
Fine filter provided
by customer
5 Electrical connections
5.1 Safety instructions
All work pertaining to the electrical installation must be carried
out by qualified personnel only.
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.
5.2 Control voltage
The standard control voltage of 220-240 V is taken from terminals L1 and N of the heating voltage. A 1.6 A Fuse (F1)
is located on the electronic control board.
5.3 Heating voltage
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.
11
6 Putting the humidifier into operation
6.1 Start-up
Prior to starting the unit up, check the correct connections of the steam pipe, water feed pipe, drainage pipes and
electrical cables.
Open the shut-off valve in the water feed pipe and switch the unit on with the black power switch.
As soon as the demand for steam is recognised, the green LED lights up, the contactor is activated and , soon after,
water is let into the steam cylinder. As soon as the electrodes in the cylinder are covered with water, it is being
heated and the fully automatic operation commences.
During the start-up phase, or after a new replacement cylinder has been fitted, the maximum water level can be
attained. When Niveau max. has been reached, the inlet valve closes. 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.
6.2 Setting the output limitation
The steam output can be set step less from 20 % to 100 %
capacity. For setting the output limitation the electric
Button “manual drainage”
compartment must be opened and the potentiometer on
the electronic print must be adjusted. Turning clockwise
increases the steam output and turning anticlockwise
reduces the steam output. The output ex works is set at
100 %.
Potentiometer
Coding switches
Fig. 6.1
6.3 LED Display
The electronic controls unit of the econoVap monitors the operation of the humidifier continuously.
All operating conditions and system indications are shown with the two-colour LED. The status of the LED can be
shining continuously or flashing in the red and green colours.
12
6.4 System- and servicing indications
LED shining “green” continuously
Operation
Humidification is demanded. The humidifier operates automatically. Without demand of humidity the LED remains
dark.
red flash in the shining “green”
Niveau max. attained
Occurs when the Niveau max. sensor is activated. This causes a momentary closure of the inlet valve.
LED blinking “red-green-red-green”
Manual drainage open
Manual drainage is activated, the drainage-button has been pressed.
LED blinking “green”
Cylinder service “U1”
The steam cylinder can no longer attain the nominal output and needs to be cleaned or perhaps replaced (refer to
chapter 7.3). This is purely a servicing code, the unit does not switch off automatically. The humidifier continues to
function at a reduced output.
LED shining “red” continuously
Excess current “U2”
Whenever there is excess current (140 % of nominal value) the humidifier switches itself off for safety reasons.
After the fault has been rectified, the humidifier is put back into operation by pressing the main power switch.
LED blinking “red”
Continuous fill “U3”
The humidifier tries to fill the cylinder continuously. Either a heating phase or the water is missing. The humidifier
switches itself off automatically after 30 minutes. After the fault has been rectified, the unit is put back into
operation by pressing the main power switch.
LED blinking “red-red-green-green”
Microcontroller uncoded “U4”
This signal appears if a replacement electronic control unit has been fitted to the humidifier without being coded.
The humidifier is prevented from operating. The signal disappears as soon as the controls unit has been coded.
6.6 Remote indication
A standard, potential-free relay output enables the alarm messages to be remotely displayed.
6.7 Safety functions
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 nominal 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 the current fails to fall below 140 % of the nominal level even after several drainage operations, the humidifier
turns itself off automatically and the failure message “U2” (continuously red) appears on the LED display.
13
7 Maintenance
Regular servicing helps to maintain the operation of the humidifier.
The following work must be carried out by qualified personnel.
!
7.1 Regular checks
• Inspect the steam cylinder:
Are there any deposits in the steam cylinder?
⇒
Remove the drainage strainer and flush the cylinder thoroughly with tap water (without
chemical additives). Replace the strainer after cleaning.
• Are the electrodes worn?
⇒
Replace the steam cylinder.
• Inspect all hoses (steam-, condensate- and water hoses), also inside the unit:
Is the installation correct?
Are all clamps still fastened tightly?
• Inspect the intake and drainage valves:
⇒
If worn or covered with scale deposits the valve must be replaced.
• Inspect the drainage cup. Clean or replace if necessary.
7.2 Rectifying faults
The humidifier produces insufficient or no steam. Following causes are possible:
• The humidity controller is not demanding any steam production.
• There is no water in the steam cylinder because the water supply is interrupted.
• The filter or the nozzle in the inlet valve is blocked or damaged.
• The cylinder is worn out and needs to be replaced.
• The contactor coil is defective.
7.3 Replacing the steam cylinder
The serviceable life of the steam cylinder depends on the actual operation time and the hardness of the tap water used.
The cylinder should be replaced when the system message “U1/cylinder service” appears on the LED display (flashing
green). Under certain circumstances the cylinder can still be used before it has to be replaced.
Proceed as follows:
• Empty the cylinder by pressing the drainage-button
!
• Let the cylinder cool down
•
For the following procedures the equipment must be disconnected from the power supply!
• Loosen the hose clamp on the head of the cylinder and then remove the steam hose. Remove the electrode plugs
from the cylinder. Push the cylinder up and remove it.
• Check the seal O-ring in the cylinder admission and replace if necessary.
• To fit the new cylinder reverse above procedure.
• Connect the heating cables to the electrode pins according to the coloured dots (for cylinders up to 3 electrodes)
respectively as shown in Fig. 7.1 (cylinders with 6 electrodes).
• Restart the humidifier according to section 6.1 (start-up).
14
black
red
white
white
red
black
Fig. 7.1
7.4 Taking the humidifier out of operation
If the humidifier is out of operation for a longer period of time ( e.g. in summer or when the air conditioning system
is not operating), the steam cylinder must be emptied and the power supply disconnected.
8. Options
All options can be fitted either at the factory or subsequently.
Proportional adaptor
The steam output of the econoVap can be set anywhere between 20 % and 100 %. The proportional adaptor can be
simply inserted onto the electronic controls unit.
Following signals can be processed by the adaptor:
Voltage:
Current:
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
SC-System
The SC-System is a patented self-cleaning system for the electrode steam humidifiers of NORDMANN.
The minerals are kept in suspension and as such are kept to a large extend from building up at the bottom of the
cylinder. The suspended minerals are flushed away during the normal drainage operations. The service life of the
steam cylinder is lengthened considerably and maintenance is made easier.
Cabinet Heating
Is the unit installed in an environment presenting the risk of frost, then the option “cabinet heating” is used.
It prevents the water in the steam cylinder from freezing.
15
9. Technical specifications
Type mark:
Type
434
834 1534 2364 3264 4564 6564
Heating voltage
Number of phases
Heating current
External fuses p. phase
Type mark:
Volt
400 Volt, 50/60 Hz
~
3
3
3
3
3
3
3
A
4.4
10
8.8 16.5 25.2 35.1 49.4 71.3
A
16
25
40
50
80
100
Type
422 432 822 832 1532 2362 3262
Heating voltage
Number of phases
Heating current
External fuses p. phase
Steam output
Minimum capacity
Nominal power
Design data:
Volt
230 Volt, 50/60 Hz
~
1
3
1
3
3
3
3
A
A
13.2 7.6 26.4 15.3 28.6 43.9 61.0
20
4
16
4
40
8
25
8
40
15
3
63
23
4.6
100
32
kg/h
kg/h steam
kW
45
65
0.8
3.0
0.8
3.0
1.6
6.1
1.6
6.1
6.4
9
13
11.4 17.5 24.3 34.2 49.4
Dimensions
width mm
height mm
depth mm
mm
354 354 354 354 490 490 490 490 490
562 562 562 562 672 672 672 672 672
210 210 210 210 340 340 340 340 340
1x22 1x22 1x22 1x22 1x35 1x35 1x35 2x35 2x35
Steam outlet diameter
Weight (empty)
kg
11.5 11.5
12
12
20
35
21
36
22.5
47.5
24
49
24
49
Operating weight
Accessories:
kg
15
15
18.5 18.5
Humidity controller
Control electronics:
Supply voltage
qty
1
1
1
1
1
1
1
1
1
1
1
1
1
Volt
qty
220–240 Volt, 50/60 Hz, 1~
Proportional adaptor
1
1
1
1
1
1
1
Steam distributors for dct use:
Steam nozzle
qty
qtv
qty
qty
qty
1
1
1
1
22-xxx mm
1
35-300 mm
1
1
1
35-450 mm
1
1
2
2
35-600, 35-900 mm
35-1200, 35-1500 mm
Steam hose:
2
Ø 22/29 mm
Ø 35/43 mm
Condensate hose:
Ø 6/10 mm
qty x m
qty x m
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
2
1
2
2
1
qty x m
1
1
1
1
1
1
Steam blowers for direct room humidification
Split mounted
qty
1
Other heating voltages on request.
Manufacturer:
Walter Meier (Climate international) ltd.
talstr. 35-37, P.O. Box, CH-8808 Pfäffikon (switzerland)
Phone +41 55 416 61 11, Fax +41 55 416 62 62
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