Nordmann AT4 D Series User manual
MOUNTING INSTRUCTIONS
Steam generator
Nordmann AT4 D
2559435 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 Steamgeneratorconstruction 10
3.4 Functionaldescription 11
3.5 Humidicationsystemoverview 13
3.6 Options 14
3.7 Accessories 14
3.7.1 Accessories overview 14
3.7.2 Accessorydetails 16
3.8 Standarddelivery 17
3.9 Storing/Transportation/Packaging 17
4 Notes for the planning engineer 18
4.1 Selecting the unit version 18
4.1.1 Determinationoftherequiredsteamcapacity 18
4.1.2 Selectingtheunit 19
4.2 Selectingtheoptionsanaccessories 19
5 Mounting and installation work 20
5.1 Importantnotesformountingandinstallationwork 20
5.2 Installationoverview 21
5.3 Mounting the unit 22
5.3.1 Notesonlocatingtheunit 22
5.3.2 Mountingthesteamgenerator 24
5.3.3 Inspectingtheinstalledunit 25
5.4 Steaminstallation 26
5.4.1 Overviewsteaminstallation 26
5.4.2 Positioning/mountingthesteamdistributor 27
5.4.3 Installingthesteamandcondensatehose 28
5.4.4 Commonsteamandcondensatelineerrors 32
5.4.5 Inspectingthesteaminstallation 33
5.5 Waterinstallation 34
5.5.1 Overviewwaterinstallation 34
5.5.2 Notesonwaterinstallation 35
5.5.3 Inspectingthewaterinstallation 36
5.6 Electricinstallation 37
5.6.1 WiringdiagramNordmannAT4D 37
5.6.2 Notesonelectricinstallation 38
5.6.3 Inspectingtheelectricalinstallation 45
6 Productspecications 46
6.1 Technicaldata 46
6.2 Unit dimensions 47
4
1 Introduction
1.1 To the very beginning
We thank you for having purchased the steam generator NordmannAT4 D.
The steam generator Nordmann AT4 D incorporates the latest technical ad-
vances and meets all recognized safety standards. Nevertheless, improper
use of the Nordmann AT4 D 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 generator
NordmannAT4 D, 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 generator
Nordmann AT4 D. 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
generator Nordmann AT4 D 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 cross-references 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 sup-
plier.
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.
Passing-on 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 D must have read and un-
derstood the present mounting instructions before carrying out any instal-
lation 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 D are fa-
miliar and comply with the appropriate regulations on work safety and the
prevention of accidents.
Intended use
The steam generator Nordmann AT4 D is intended exclusively for gen-
eration of steam for a steam bath within the specied operating condi-
tions (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 D 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).
Danger that may arise from the unit:
DANGER!
Danger of electric hazard!
The Nordmann AT4 D is mains powered. One may get in touch with
live parts when the unit is open. Touching live parts may cause se-
vere injury or danger to life.
Prevention: The Nordmann AT4 D 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.
7
Behaviour in case of danger
All persons working with the Nordmann AT4 D are obliged to report any
alterations 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 D 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 generators Nordmann AT4 D are available with different heating
voltages and steam capacities ranging from 5 kg/h up to a maximum
of 65 kg/h.
Heating voltage ** Max. steam capacity
in kg/h
Model
Nordmann AT4 D
Unit size
small medium large
400V3
(400 V/3~/50...60 Hz)
5 534 x
8 834 x
15 1534 x
23 2364 x
32 3264 x
45 4564 x
65 6564 x
400V2
(400 V/2~/50...60 Hz)
5 524 x
8 824 x
230V3
(230 V/3~/50...60 Hz)
5 532 x
8 832 x
15 1532 x
23 2362 x
32 3262 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 D 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
Nordmann Engineering AG, CH-8808 Pfäfkon
Type: AT4 D 4564 Ser.Nr.: XXXXXXX 02.10
Heating voltage: 400V / 3~ / 50...60Hz Power: 33.8 kW
Steam capacity: 45.0 kg/h Ctrl. Voltage: 230V / 1~ / 50...60Hz
Water pressure: 1...10 bar
Made in Switzerland
3.2 Identicationoftheunit
The identication of the unit is found on the type plate:
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
10
3.3 Steam generator construction
1 Steam cylinder compartment
2 Control compartment
3 Power board
4 Main contactor
5 Transformer
6 Steam bath board
7 Connecting terminals
8 Type plate
9 Remote operating and fault indication board (option)
10 Cable openings
11 Control board with CF Card
12 Display and control unit
13 Drain key
14 Operation status indicators
15 Unit switch
16 SC pump
17 Water cup
18 Filling and draining hose
19 Water supply hose
20 Overow hose
21 Inlet valve
22 Drain pump
23 Drain cup
24 Steam cylinder receptacle
25 Drain hose (manual drain)
26 Steam cylinder
27 Level sensor
28 Steam outlet
29 Electrode plug
30 Drain connector
31 Water supply connector
gure shows medium unit
1
17
16
20
24
23
18
19
22
21
26
25
29
27
28
30
31
3
2
4
5
10
12
14
13
11
15
6
7
9
8
11
3.4 Functional description
The steam generator Nordmann AT4 D is a pressureless steam generator
that utilizes an electrode heating. The steam generator Nordmann AT4 D
is designed for steam generation for steam baths.
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 distributor
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
Steam bath board
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 periodically
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 as a result they are
discharged with the automatic drain cycles.
Control steam production
The steam production is controlled steplessly (continuous control) by the
KTY temperature sensor and the integrated continuous controller.
Steam bath control
The control of the steam bath components (light, fans, fragrance pumps,
bench heating, etc.) is established via the integrated steam bath board.
13
ONOFF
ONOFF
10
11
1
2
3
4
5
6
7
Z261
8
9
12
DS22
DS35
W22
W35
13
14
KTY
3.5 Humidicationsystemoverview
1 Steam generator
2 Steam connector
3 Water drain connector
4 Water supply 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 control voltage supply (building side)
12 Steam hose (accessory “DS22”/“DS35”)
13 Steam distributor (accessory “W..”/“DDS...”/“DDL...”)
14 Temperature sensor (accessory “KTY”)
125...1250 µS/cm
1...10 bar
1...40 °C
14
3.6 Options
Nordmann AT4 D...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 6564
Steam hose connector with conden-
sate trap
1xCT22 1xCT35 2xCT35
Cable glands CG
Internal control voltage supply
(for mains supply with neutral lead)
1xS-CVI 1xM-CVI 1xL-CVI
@-Link AT4 D
Gateway to connect the Nordmann AT4
D to a building management system.
Two versions are available: BACnet/IP or
LonWorks.
Conguration according to separate documentation
Nordmann AT4 D... (400 V/3~/50...60 Hz)
534 834 1534 2364 3264 4564 6564
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
___
3.7 Accessories
3.7.1 Accessories overview
Accessories for water installation
Nordmann AT4 D...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 6564
Filter valve 1xZ261
Accessories for steam installation
Nordmann AT4 D...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 6564
Steam distributor (up to max. 4 kg/h)
(Details see chapter 3.7.2)
1xDDS22 ___ ___ ___ ___ ___ ___
Steam distributor (4...32 kg/h)
(Details see chapter 3.7.2)
___ 1xDDL22 1xDDL35 ___ ___
Steam distributor (4...65 kg/h)
(Details see chapter 3.7.2)
1xW22 1xW35 2xW35
Steam hose / meter 1xDS22 1xDS35 2xDS35
EcoTherm Insulation hose / meter 1xECT22 1xECT60 2xECT60
Condensate hose / meter KS10
Condensate drain 1xCD22 1xCD35 2xCD35
T-piece fragrance injection 1xTSD22 1xTSD35 2xTSD35
Fragrance pump 1xFP 240V
15
Accessories for operation control
Nordmann AT4 D...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 6564
Temperature sensor 1xKTY
Nordmann AT4 D Remote-Terminal 1 Terminal (RP) for the remote control of up to 8 steam generators
Nordmann AT4 D Touch Screen Panel 1xTSP
General accessories
Nordmann AT4 D...
522
524
532
534
822
824
832
834
1532
1534
2362
2364
3262
3264
4564 6564
All-weather protective housing
Layout according to the separate data sheet
16
3.7.2 Accessory details
3.7.2.1 3.7.2.1Steam distributor DDS22
3.7.2.3 3.8.2.3Steam distributor W22/W35
3.7.2.2 3.7.2.2Steam distributor DDL22/DDL35
ø22.5 mm
ø48.5 mm
max. 19 mm
ø43 mm
DDL22: ø22.5 mm
DDL35: ø35 mm
max. 18 mm
W22: ø43 mm
W35: ø61 mm
W22: ø22.5 mm
W35: ø35 mm
17
3.8 Standard delivery
The standard delivery includes:
– Steam generator Nordmann AT4 D with water connection hose G 3/4"
- G 3/8" and water drain hose ø 31/40 mm equipped with the options
ordered according to chapter 3.6, xing set, mounting instructions (this
document) and operating instructions, packaged in cardboard box
Unit type Dimensions packaging (L x W x D) Transport weight
522, 524, 532, 534,
822, 824, 832, 834 705 mm x 505 mm x 325 mm 14 kg
1532, 1534,
2362, 2364 750 mm x 585 mm x 415 mm 21 kg
3262, 3264,
4564, 6564 770 mm x 640 mm x 420 mm 31 kg
– Ordered accessories with operating instructions according chapter 3.7,
packed separately
– Spare parts list
3.9 Storing/Transportation/Packaging
Storing
Store the unit in a protected area meeting the following requirements:
– Room temperature: 1 ... 40 °C
– Room humidity: 10 ... 75 %rh
Transportation
For optimum protection always transport the unit in the original packag-
ing.
The weight of the units with a steam capacity of more than 8 kg/h is more
than 20 kg (see chapter 6.1 “Technical data”). Therefore, always transport
these units with the help of another person or use an appropriate lifting
device. Always place the unit on its back side.
Packaging
Keep the original packaging of the Nordmann AT4 D for later use.
In case you wish to dispose of the packaging, observe the local regulations
on waste disposal. Never dispose of the packaging to the environment.
18
4.1 Selecting the unit version
To select the unit version the following planning steps are required:
1. Determinating the required maximum steam capacity according chap-
ter 4.1.1
2. Selecting the unit version from the table in chapter 4.1.2
4.1.1 Determination of the required steam capacity
The steam capacity required for a particular steam bath can be determined
with the following table:
Cabin size Required steam capacity
Plastic cabin brick lined cabin
4 m35 kg/h 8 kg/h
8 m38 kg/h 12 kg/h
12 m310 kg/h 15 kg/h
16 m312 kg/h 18 kg/h
20 m313 kg/h 21 kg/h
24 m315 kg/h 24 kg/h
28 m317 kg/h 26 kg/h
32 m318 kg/h 29 kg/h
36 m320 kg/h 31 kg/h
40 m321 kg/h 34 kg/h
44 m323 kg/h 36 kg/h
48 m324 kg/h 38 kg/h
52 m326 kg/h 41 kg/h
56 m327 kg/h 43 kg/h
60 m329 kg/h 45 kg/h
Important notes:
– The determined steam capacity based on the above table does not
consider any steam loss (e.g. due to condensation in the steam hoses
and the steam distributors), any heat loss of the unit as well as any
absorption or release of humidity of materials located in the steam bath
being humidi ed.
In addition, the calculated steam capacity does not consider any losses
caused by the draining rate depending on the water quality as well as
any losses occur if the steam generator is operated on a mains circuit
with a ground fault circuit interrupter.
The total amount of losses depends on the entire system and must be
taken into consideration when determinating the required steam capac-
ity. If you have any questions regarding the calculation of the steam
capacity please contact your Nordmann supplier.
4 Notes for the planning engineer
19
4.1.2 Selecting the unit
Heating voltage ** Max. steam capacity
in kg/h
Model
Nordmann AT4 D
Unit size
small medium large
400V3
(400 V/3~/50...60 Hz)
5 534 x
8 834 x
15 1534 x
23 2364 x
32 3264 x
45 4564 x
65 6564 x
400V2
(400 V/2~/50...60 Hz)
5 524 x
8 824 x
230V3
(230 V/3~/50...60 Hz)
5 532 x
8 832 x
15 1532 x
23 2362 x
32 3262 x
230V1
(230 V/1~/50...60 Hz)
5 522 x
8 822 x
** Other heating voltages on request
4.2 Selecting the options an accessories
For selecting the options and accessories see chapter 3.6 and 3.7.
Nordmann AT4 D 4564 400V3
20
5 Mounting and installation work
5.1 Important notes for mounting and installation work
Qualication of personnel
All mounting and installation work must be carried out only by well quali-
ed personnel authorised by the owner. It is the owner’s responsibility
to verify proper qualication of the personnel.
General note
Strictly observe and comply with all information given in the present mounting
instructions regarding the location of the unit and the installation of water,
steam and electricity.
Observe and comply with all local regulations dealing with water, steam
and electrical installations.
Safety
Some installation work requires removal of the unit covers. Please note
the following:
DANGER!
Danger of electric hazard!
You may get in touch with live parts when the unit is open. The steam
generator must be connected to the mains only after all mounting and
installation work has been completed and the cover has been relocated
properly.
CAUTION!
The electronic components inside the steam generator are very sensitive
to electrostatic discharge. When the unit is open for installation work, ap-
propriate measures must be taken to protect these components against
damage caused by electrostatic discharge (ESD protection).
Other manuals for AT4 D Series
1
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