Nordmann AT4 Series User manual
MOUNTING INSTRUCTIONS
Steam humidier
Nordmann AT4
2559419 EN 1310
NORDMANN
ENGINEERING
3
Contents
1 Introduction 4
1.1 To the very beginning 4
1.2 Notes on the mounting instructions 4
2 For your safety 6
3 Product Overview 8
3.1 Models overview 8
3.2 Identicationoftheunit 9
3.3 Steamhumidierconstruction 10
3.4 Functionaldescription 11
3.5 Humidicationsystemoverview 13
3.6 Options 17
3.7 Accessories 18
3.7.1 Accessoriesoverview 18
3.7.2 Accessorydetails 19
3.8 Standarddelivery 22
3.9 Storing/Transportation/Packaging 22
4 Notes for the planning engineer 23
4.1 Selecting the unit version 23
4.1.1 Calculatingthemaximumrequiredsteamcapacity 23
4.1.2 Selecting the unit 24
4.2 Selectingtheoptionsanaccessories 24
4.3 Selecting the control system 25
5 Mounting and installation work 27
5.1 Importantnotesformountingandinstallationwork 27
5.2 Installationoverviews 28
5.3 Mountingtheunit 30
5.3.1 Notesonlocatingtheunit 30
5.3.2 Mountingthehumidier 32
5.3.3 Inspectingtheinstalledunit 33
5.4 Steaminstallation 34
5.4.1 Overviewsteaminstallation 34
5.4.2 Positioningofthesteamdistributionpipes 35
5.4.3 Installingthesteamdistributors 39
5.4.4 PositioningandmountingofthefanunitsFAN4N... 40
5.4.5 Installingthesteamandcondensatehose 41
5.4.6 Commonsteamandcondensatelineerrors 45
5.4.7 Inspectingthesteaminstallation 46
5.5 Waterinstallation 47
5.5.1 Overviewwaterinstallation 47
5.5.2 Notesonwaterinstallation 48
5.5.3 Inspectingthewaterinstallation 49
5.6 Electricinstallation 50
5.6.1 WiringdiagramNordmannAT4singleunits 50
5.6.2 WiringdiagramNordmannAT4doubleunits 51
5.6.3 Notesonelectricinstallation 52
5.6.4 Inspectingtheelectricalinstallation 58
6 Productspecications 59
6.1 Technicaldata 59
6.2 Unitdimensions 60
4
1 Introduction
1.1 To the very beginning
We thank you for having purchased the steam humidier Nordmann AT4.
The steam humidier Nordmann AT4 incorporates the latest technical ad
van ces and meets all recognized safety standards. Nevertheless, improper
use of the Nordmann AT4 may result in danger to the user or third parties
and/or impairment of material assets.
To ensure a safe, proper, and economical operation of the steam humidier
Nordmann AT4, please observe and comply with all information and safety
instructions contained in the present mounting instructions.
If you have questions, which are not or insufciently answered in this
documentation, please contact your Nordmann supplier. They will be glad
to assist you.
1.2 Notes on the mounting instructions
Limitation
The subject of these mounting instructions is the steam humidier
Nordmann AT4. The various accessories are only described insofar as this
is necessary for proper operation of the equipment. Further information on
accessories can be obtained in the respective instructions.
These mounting instructions are restricted to the installation of the steam
humidier Nordmann AT4 and is meant for well trained personnel being
sufciently qualied for their respective work.
These mounting instructions are supplemented by various separate items
of documentation (operating instructions, spare parts list, manuals for ac
cessories, etc.). Where necessary, appropriate crossreferences are made
to these publications in the present documentation.
5
Explanation of the symbols used in this manual
CAUTION!
The catchword “CAUTION” designates notes in this documentation that, if
neglected, may cause damage and/or malfunction of the unit or other
material assets.
WARNING!
The catchword “WARNING” used in conjunction with the general caution
symbol designates safety and danger notes in this documentation that, if
neglected, may cause to injury to persons.
DANGER!
The catchword “DANGER” used in conjunction with the general caution
symbol designates safety and danger notes in this documentation that, if
neglected, may lead to severe injury or even death of persons.
Safekeeping
Please safeguard these mounting instructions in a safe place, where it can
be immediately accessed. If the equipment changes hands, the documenta
tion should be passed on to the new operator.
If the documentation gets mislaid, please contact your Nordmann supplier.
Language versions
The present mounting instructions are available in various languages. Please
contact your Nordmann supplier for information.
Copyright protection
The present mounting instructions are protected under the Copyright Act.
Passingon and reproduction of the manual (or part thereof) as well as ex
ploitation and communication of the contents are prohibited without written
permission by the manufacturer. Violation of copyright terms is subject to
legal prosecution and arises liability for indemnication.
The manufacturer reserves the right to fully exploit commercial patent rights.
6
2 For your safety
General
Every person working with the Nordmann AT4 must have read and understood
the present mounting instructions before carrying out any installation work.
Knowing and understanding the contents of the mounting instructions is a
basic requirement for protecting the personnel against any kind of danger,
to prevent faulty installation, and to install and operate the unit safely and
correctly.
All ideograms, signs and markings applied to the unit must be observed
and kept in readable state.
Qualication of personnel
All actions described in the present mounting instructions must be carried
out only by well trained and sufciently qualied personnel authorised
by the owner.
For safety and warranty reasons any action beyond the scope of this
manuals must be carried out only by qualied personnel authorised by the
manufacturer.
It is assumed that all persons working with the Nordmann AT4 are familiar
and comply with the appropriate regulations on work safety and the preven
tion of accidents.
Intended use
The steam humidier Nordmann AT4 is intended exclusively for air hu-
midication via a steam distributor or a fan unit approved by the
manufacturer within the specied operating conditions (see chapter 6
“Product specications”). Any other type of application without the express
written consent of the manufacturer is considered as not conforming with the
intended purpose and may lead to the Nordmann AT4 becoming dangerous.
Operation of the equipment in the intended manner requires that all the
information in these instructions is observed (in particular the safety
instructions).
7
Danger that may arise from the unit:
DANGER!
Danger of electric hazard!
The Nordmann AT4 is mains powered. One may get in touch with live
parts when the unit is open. Touching live parts may cause severe
injury or danger to life.
Prevention: The Nordmann AT4 must be connected to the mains only
after all mounting and installation work has been completed, all installa
tions have been checked for correct workmanship and the covers has
been relocated properly.
Behaviour in case of danger
All persons working with the Nordmann AT4 are obliged to report any al
terations to the unit that may affect safety to the owner without delay and
to secure such a unit against accidental power-up.
Prohibited modications to the unit
No modications must be undertaken on the Nordmann AT4 without the
express written consent of the manufacturer.
For the replacement of defective components use exclusively original ac-
cessories and spare parts available from your Nordmann supplier.
8
3 Product Overview
3.1 Models overview
Steam air humidiers Nordmann AT4 are available with different heating
voltages and steam capacities ranging from 5 kg/h up to a maximum
of 130 kg/h.
Heating voltage ** Max. steam ca-
pacity
in kg/h
Model
Nordmann AT4
Unit size
Single
unit
Double
unit
small medium large large
400V3
(400 V/3~/50...60 Hz)
5534 x
8834 x
15 1534 x
23 2364 x
32 3264 x
45 4564 x
64 6464 x
65 6564 x
90 9064 x
130 13064 x
400V2
(400 V/2~/50...60 Hz)
5524 x
8824 x
230V3
(230 V/3~/50...60 Hz)
5532 x
8832 x
15 1532 x
23 2362 x
32 3262 x
46 4662 x
64 6462 x
230V1
(230 V/1~/50...60 Hz)
5 522 x
8 822 x
** Other heating voltages on request
Key model designation
Example:
Nordmann AT4 4564 400V3
Product designation:
Unit model:
Heating voltage:
400V/3~/50...60Hz: 400V3
400V/2~/50...60Hz: 400V2
230V/3~/50...60Hz: 230V3
230V/1~/50...60Hz: 230V1
9
3.2 Identicationoftheunit
The identication of the unit is found on the type plate:
Nordmann Engineering AG, CH-8808 Pfäfkon
Typ: AT4 4564 Ser.Nr.: XXXXXXX 02.10
Heizspannung: 400V / 3~ / 50...60Hz Leistung: 33.8 kW
Dampeistung: 45.0 kg/h St.Spannung: 230V / 1~ / 50...60Hz
Wasserdruck: 1...10 bar
Made in Switzerland
Type designation Serial number (7 digits) Month/Year
Heating voltage
Maximum steam capacity per unit
Admissible water supply pressure
Power consumption
Control voltage
Field with certication symbols
Module A Module B
10
3.3 Steamhumidierconstruction
1 Steam cylinder compartment
2 Control compartment
3 Main contactor
4 Power board
5 Connecting terminals
6 Type plate
7 Remote operating and fault indication board (option)
8 Cable openings
9 Control board with CF Card
10 Display and control unit
11 Drain key
12 Operation status indicators
13 Unit switch
14 SC pump
15 Water cup
16 Filling and draining hose
17 Water supply hose
18 Overow hose
19 Inlet valve
20 Drain pump
21 Drain cup
22 Steam cylinder receptacle
23 Drain hose (manual drain)
24 Steam cylinder
25 Level sensor
26 Steam outlet
27 Electrode plug
28 Drain connector
29 Water supply connector
gure shows medium unit
3
2
1
4
5
7
8
10
12
11
9
15
14
18
22
21
16
17
20
19
24
23
27
25
26
28
29
13
6
11
3.4 Functional description
The steam humidier Nordmann AT4 is a pressureless steam generator
that utilizes an electrode heating. The steam humidier Nordmann AT4 is
designed for air humidication via a steam distributor (steam distribution
pipe, fan unit or steam distribution system MultiPipe).
Steam generation
Any time steam is requested, the electrodes are supplied with voltage via
main contactor. Simultaneously, the inlet valve opens and water enters the
steam cylinder from the bottom via water cup and supply line. As soon as the
electrodes come in contact with the water, current begins to ow between
the electrodes, eventually heating and evaporating the water. The more the
electrode surface is exposed to water, the higher is the current consumption
and thus the steam capacity.
Steam distribution pipe
Condensate hose
with siphon
Steam hose
Water cup
Overow hose
Filling and
draining hose
Water supply
hose
Inlet valve
steam cylinder receptacle
Steam cylinder
Electrodes
Level sensor
Drain hose
Control board
Power board
Unit switch
Main contactor
Current sensor
Drain pump
SC pump
Connecting terminals
12
Upon reaching the requested steam capacity, the inlet valve closes. If the
steam generation decreases below a certain percentage of the required
capacity, due to lowering of the water level (e.g. because of the evapora
tion process or drainage), the inlet valve opens until the required capacity
is available again.
If the required steam capacity is lower than the actual output, the inlet valve
is closed until the desired capacity is achieved by lowering of the water level
(evaporation process).
Level monitoring
A sensor provided in the steam cylinder cover detects when the water level
gets too high. The moment the sensor comes in contact with water, the
inlet valve closes.
Drainage
As a result of the evaporation process, the conductivity of the water increases
due to an escalating mineral concentration. Eventually, an inadmissibly high
current consumption would take place if this concentration process were
permitted to continue. To prevent this concentration from reaching a value,
unsuitably high for the operation, a certain amount of water is perio dically
drained from the cylinder and replaced by fresh water.
Lime management
The interval controlled SC pump blows air into the steam cylinder. Thus
keeping the solved minerals in the water in motion so they are discharged
with the automatic drain cycles.
Control
The steam production can be controlled with the internal or an external
continuous controller or an external humidistat (24 VDC On/Off control).
13
ONOFF
ONOFF
11
10
1
2
3
4
5
6
7
DS35
DS22
Z261
12
13
16
14
KS10
DV41
DV71
17
8
9
ONOFF
ONOFF
11
10
17
1
3
5
6
7
Z261
8
2
13
4
DS35
KS10
12
14
DV71
16
9
15
MultiPipe
System 1
System 2
3.5 Humidicationsystemoverview
System overview duct humidication (single units)
1 Steam humidier
2 Steam connector
3 Water supply connector
4 Water drain connector
5 Water connection hose G 3/4" G 3/8"
(included in the delivery)
6 Filter valve (accessory “Z261”)
7 Manometer (installation recommended)
8 Funnel with siphon (building side)
9 Water drain hose (included in the delivery)
10 Service switch control voltage supply (building side)
11 Service switch heating voltage supply (building side)
12 Steam hose (accessory “DS22”/“DS35”)
13 Condensate hose (accessory “KS10”)
14 Steam distribution pipe (accessory “DV41..”/“DV71..”)
15 Steam distribution system (accessory “MultiPipe”)
16 Continuous humidity controller or humidistat
17 Safety humidistat
125...1250 µS/cm
1...10 bar
1...40 °C
14
System overview duct humidication (double units)
1 Steam humidier
2 Steam connector
3 Water supply connectors
4 Water drain connector
5 Water connection hose G 3/4" G 3/8"
(included in the delivery)
6 Filter valve (accessory “Z261”)
7 Manometer (installation recommended)
8 Funnel with siphon (building side)
9 Water drain hose (included in the delivery)
10 Service switch control voltage supply (building side)
11 Service switch heating voltage supply module A (building side)
12 Service switch heating voltage supply module B (building side)
13 Steam hose (accessory “DS35”)
14 Condensate hose (accessory “KS10”)
15 Steam distribution pipe (accessory “DV71..”)
16 Steam distribution system (accessory “MultiPipe”)
17 Continuous humidity controller or humidistat
18 Safety humidistat
125...1250 µS/cm
1...10 bar
1...40 °C
15
DV71
ONOFF
ONOFF
ONOFF
10
11
12
KS10
18
9
8
14
1
2
3
4
6
7
Z261
5
8
17
DS35
13
16
MultiPipe
System 4
15
System overview room humidication (single units)
1 Steamhumidier
2 Steamconnector
3 Watersupplyconnector
4 Waterdrainconnector
5 WaterconnectionhoseG3/4"-G3/8"
(includedinthedelivery)
6 Filtervalve(accessory“Z261”)
7 Manometer(installationrecommended)
8 Funnelwithsiphon(buildingside)
9 Waterdrainhose(includedinthedelivery)
10 Serviceswitchcontrolvoltagesupply(buildingside)
11 Serviceswitchheatingvoltagesupply(buildingside)
12 Steamhose(accessory“DS80”)
13 Condensatehose(accessory“KS10”)
14 Ventilationunit(accessory“FAN4N...”)
15 Continuoushumiditycontrollerorhumidistat
16 Safetyhumidistat
125...1250µS/cm
1...10bar
1...40°C
ONOFF
ONOFF
15
16
11
10
12
13 KS10
DS80
Z261
8
9
5
6
7
1
4
3
ONOFF
11
14
FAN4 N S ... D
FAN4 N M ... D
15
16
ONOFF
10
1
3
5
6
7
Z261
4
8
9
14
2
12
13
FAN4 N L ... W
KS10
DS80
ONOFF
11
15
16
ONOFF
10
1
3
5
6
7
Z261
4
8
9
2
12
13
FAN4 N L ... W
KS10
DS80
14
2
14
FAN4 N S ... W
FAN4 N M ... W
FAN4 N L ... W
16
System overview room humidication (double units)
125...1250 µS/cm
1...10 bar
1...40 °C
1 Steam humidier
2 Steam connector
3 Water supply connectors
4 Water drain connector
5 Water connection hose G 3/4" G 3/8"
(included in the delivery)
6 Filter valve (accessory “Z261”)
7 Manometer (installation recommended)
8 Funnel with siphon (building side)
9 Water drain hose (included in the delivery)
10 Service switch heating voltage supply (building side)
11 Service switch heating voltage supply module A (building side)
12 Service switch heating voltage supply module B (building side)
13 Steam hose (accessory “DS80”)
14 Condensate hose (accessory “KS10”)
15 Ventilation unit (accessory “FAN4 N...”)
16 Continuous humidity controller or humidistat
17 Safety humidistat
16
17
ONOFF
ONOFF
9
8
ONOFF
10
11
12
1
4
6
7
Z261
3
5
15
FAN4 N L ... W
2
13
14 KS10
DS80
13
14 KS10
DS80
16
17
ONOFF
ONOFF
9
8
ONOFF
10
11
12
1
4
6
7
3
FAN4 N L ... W
FAN4 N L ... W
15
15
KS10
DS80
Z261
14
13
2
5
17
3.6 Options
Nordmann AT4...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 4662 6462
6464
6564 9064 13064
Remote operating and fault indication
PCB with relay contacts for the connection
of remote displays for “Operation”, “Steam”,
“Fault” and “Service”.
1xRFI
Overpressure set
Kit for mounting the water cup to the unit
cover when operating the steam humidi ers
in systems with a duct air pressure of up to
10 kPa.
1xOPS 2xOPS 1xOPS 2xOPS
Steam hose connector with
condensate trap
1xCT.. 2xCT.. 4xCT..
Cable glands 1xCG 2xCG 1xCG 2xCG
Internal control voltage supply
(for mains supply with neutral lead)
1xS-CVI 1xM-CVI 1xL-CVI
Transformer 400V/230V for internal
control voltage supply
(for mains supply without neutral lead)
Trafo
@-Link AT4
Gateway to connect the Nordmann AT4 to a
building management system. Two versions
are available: BACnet/IP or LonWorks.
Conguration according to separate documentation
Nordmann AT4... (400 V/3~/50...60 Hz)
534 834 1534 2364 3264 4564 --- 6464 6564 9064 13064
Steam cylinder for low water conductivity
from 80 to 125 µS/cm
1x
534A-L
1x
834A-L
1x
1534A-L
1x
2364A-L
1x
3264A-L
1x
4564A-L
--- 2x
3264A-L
--- 2x
4564A-L
---
18
3.7 Accessories
3.7.1 Accessories overview
Accessories for water installation
Nordmann AT4...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 4662 6462
6464
6564 9064 13064
Filter valve Z261 (1 pc. per system)
Accessories for steam installation
Nordmann AT4...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 4662 6462
6464
6564 9064 13064
Steam distribution pipe
(Details see chapter 3.7.2)
1xDV41 1xDV71 2xDV71 4xDV71
Steam distribution system MultiPipe
(Details see chapter 3.7.2)
––– ––– System 1 System 2 System 4
Fan unit
(Details see chapter 3.7.2)
1x
FAN4 N S D
or
FAN N S W
1x
FAN4 N M D
or
FAN N M W
1x
FAN4 N
L W
1x or 2x
FAN4 N
L W
2x
FAN4 N L W
4x
FAN4 N L W
Steam hose / meter DS22
or
DS80 (FAN4 N...)
DS35
oder
DS80 (FAN4 N...)
EcoTherm Insulation hose / meter ECT22 (DS22)
or
ECT80 (DS80)
ECT60 (DS35)
or
ECT80 (DS80)
Condensate hose / meter KS10
Accessories for humidity control
Nordmann AT4...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 4662 6462
6464
6564 9064 13064
Duct humidistat NHD (1 pc. per system)
Room humidistat NHR (1 pc. per system)
Humidity sensor for duct installation NDC (1 pc. per system)
Humidity sensor for room installation NRC (1 pc. per system)
General accessories
Nordmann AT4...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 4662 6462
6464
6564 9064 13064
All-weather protective housing Layout according to the separate data sheet
Remote Terminal 1 Terminal for the remote control of up to 8 humidiers
19
3.7.2 Accessory details
3.7.2.1 Steam distribution pipe DV41-.../DV71-...
The steam distribution pipes are selected on the basis of the duct width
(for horizontal installation) or the duct height (for vertical installation) and
the capacity of the steam humidier.
Important! Always select the longest possible steam distribution pipe (opti
mum humidication distance).
Steam distribution pipes for
Nordmann AT4 1)
Length (L) steam
distribution pipe
Duct width (B)
Type DV41-.. Type DV71-.. in mm 2) in mm
41200 200 210...400
41350 71350 350 400...600
41500 71500 500 550...750
41650 71650 650 700...900
41800 71800 800 900...1100
411000 711000 1000 1100...1300
411200 711200 1200 1300...1600
711500 1500 1600...2000
711800 1800 2000...2400
712000 2000 2200...2600
712300 2300 2500...2900
712500 2500 2700...3100
1) Material: CrNi steel 2) special length on request
Note: If the humidication distance (see chapter 5.4.2) has to be reduced for
technical reasons, the amount of steam per unit must be divided between
several steam distribution pipes or the steam distribution system Mul-
tiPipe must be used. If this is the case, contact your Nordmann supplier.
L
B
20
3.7.2.2 MultiPipe steam distribution system
H
B
The MultiPipe steam distribution system is used in ventilation ducts with a
short humidication distance (for the calculation of the humidication dis
tance refer to chapter 5.4.2). When ordering an MultiPipe system the duct
dimension must be specied. Please consult the data in the following table.
MultiPipe Number of steam
connectors
Max. steam
capacity
in kg/h 1)
Duct dimensions
Width B
in mm
Height H
in mm
System 1 1 32 (23) 4501500 4501650
System 2 265 (45) 4502200 4502200
System 4 4 130 (90) 4502500 8003200
1) For duct widths <600 mm the value in brackets apply
Other manuals for AT4 Series
1
This manual suits for next models
21
Table of contents
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