How it Works
Nordmann
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AT4 532
Mounting Instructions
68 pgs8.34 Mb0
Table of contents
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Nordmann AT4 834, AT4 534, AT4 3264, AT4 4564, AT4 1534 Mounting Instructions

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Nordmann AT4
Steam humidier
NORDMANN
ENGINEERING
MOUNTING INSTRUCTIONS
2559419 EN 1310
Contents
5.6.1 WiringdiagramNordmannAT4singleunits 50
5.6.2 WiringdiagramNordmannAT4doubleunits 51
3

1 Introduction

1.1 To the very beginning

We thank you for having purchased the steam humidier Nordmann AT4.
The steam humidier 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 humidier 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 insufciently 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 humidier Nordmann AT4
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 humidier Nordmann AT4 and is meant for well trained personnel being
sufciently qualied 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.
. The various accessories are only described insofar as this
4
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. 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 indemnication.
The manufacturer reserves the right to fully exploit commercial patent rights.
5

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.
Qualication of personnel
All actions described in the present mounting instructions must be carried out only by well trained and sufciently qualied personnel authorised
by the owner.
For safety and warranty reasons any action beyond the scope of this manuals must be carried out only by qualied 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 humidier Nordmann AT4 is intended exclusively for air hu­midication via a steam distributor or a fan unit approved by the manufacturer within the specied operating conditions (see chapter 6
“Product specications”). 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).
6
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 modications to the unit
No modications 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.
7

3 Product Overview

3.1 Models overview

Steam air humidiers 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
5 534 x
8 834 x
15 1534 x
23 2364 x
400V3
(400 V/3~/50...60 Hz)
400V2
(400 V/2~/50...60 Hz)
230V3
(230 V/3~/50...60 Hz)
230V1
(230 V/1~/50...60 Hz)
32 3264 x
45 4564 x
64 6464 x
65 6564 x
90 9064 x
130 13064 x
5 524 x
8 824 x
5 532 x
8 832 x
15 1532 x
23 2362 x
32 3262 x
46 4662 x
64 6462 x
5 522 x
8 822 x
Model
Nordmann AT4
Unit size
Single
unit
small medium large large
Double
unit
** 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
8
3.2 Identicationoftheunit
The identication 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
Field with certication symbols
Power consumption
Control voltage
Nordmann Engineering AG, CH-8808 Pfäfkon
Typ: AT4 4564 Ser.Nr.: XXXXXXX 02.10 Heizspannung: 400V / 3~ / 50...60Hz Leistung: 33.8 kW
Dampeistung: 45.0 kg/h St.Spannung: 230V / 1~ / 50...60Hz Wasserdruck: 1...10 bar
Made in Switzerland
Module B
Module A
9
3.3 Steamhumidierconstruction
14
15
16
17
18
19
20
21
22
27
26
25
24
23
1
2
3
4
5
6
7
8
9
10
11
28
29
gure shows medium unit
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
12
13
16 Filling and draining hose 17 Water supply hose 18 Overow 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
10

3.4 Functional description

The steam humidier Nordmann AT4 is a pressureless steam generator that utilizes an electrode heating. The steam humidier Nordmann AT4 is designed for air humidication via a steam distributor (steam distribution pipe, fan unit or steam distribution system MultiPipe).
Steam hose
Water cup
Overow hose
Filling and draining hose
Water supply hose
Level sensor
SC pump
Control board
Drain hose
Electrodes
Steam distribution pipe
Condensate hose with siphon
Current sensor
Power board
Main contactor
Inlet valve
Drain pump
Steam cylinder
Unit switch
Connecting terminals
steam cylinder receptacle
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.
11
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).
12
3.5 Humidicationsystemoverview
System overview duct humidication (single units)
16
15
MultiPipe
System 1 System 2
DV41
DV71
14
DS22
DS35
17
12
16
DV71
14
13
KS10
1
2
3
4
5
Z261
6
7
DS35
12
17
10
ONOFF
ONOFF
11
9
8
1 Steam humidier 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)
13
KS10
1
2
3
4
5
Z261
6
7
9
8
125...1250 µS/cm
1...10 bar
1...40 °C
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
10
ONOFF
ONOFF
11
13
System overview duct humidication (double units)
17
18
13
DS35
16
MultiPipe
System 4
DV71
15
KS10
Z261
125...1250 µS/cm
1...10 bar
1...40 °C
14
10
ONOFF
1
2
11
ONOFF
12
3
4
ONOFF
5
6
7
9
8
8
1 Steam humidier 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)
14
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
System overview room humidication (single units)
FAN4 N S ... D
FAN4 N M ... D
1
2
3
14
14
12
13
FAN4 N S ... W
FAN4 N M ... W
FAN4 N L ... W
DS80
KS10
10
ONOFF
15
Z261
FAN4 N L ... W
KS10
1
2
3
4
5
6
7
14
13
9
8
DS80
12
15
16
10
ONOFF
ONOFF
11
16
11
ONOFF
FAN4 N L ... W
14
4
5
Z261
6
7
125...1250µS/cm
1...10bar
1...40°C
 1 Steamhumidier  2 Steamconnector  3 Watersupplyconnector  4 Waterdrainconnector  5 WaterconnectionhoseG3/4"-G3/8"
 6 Filtervalve(accessory“Z261”)  7 Manometer(installationrecommended)  8 Funnelwithsiphon(buildingside)
(includedinthedelivery)
KS10
13
DS80
9
8
1
2
3
4
5
Z261
6
7
9
8
12
15
16
10
ONOFF
ONOFF
11
 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“DS80”) 13 Condensatehose(accessory“KS10”) 14 Ventilationunit(accessory“FAN4N...”) 15 Continuoushumiditycontrollerorhumidistat 16 Safetyhumidistat
15
System overview room humidication (double units)
FAN4 N L ... W
13
14
15
DS80
KS10
13
14
DS80
KS10
16
17
10
ONOFF
11
ONOFF
1
2
12
ONOFF
3
4
5
Z261
6
7
9
8
125...1250 µS/cm
1...10 bar
1...40 °C
1 Steam humidier 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)
KS10
14
FAN4 N L ... W
15
13
DS80
1
2
3
4
5
Z261
6
7
FAN4 N L ... W
9
8
15
16
17
ONOFF
10
ONOFF
11
ONOFF
12
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

3.6 Options

Nordmann AT4...
522 524 532 534
Remote operating and fault indication
PCB with relay contacts for the connection of remote displays for “Operation”, “Steam”, “Fault” and “Service”.
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.
Steam hose connector with condensate trap
Cable glands 1xCG 2xCG 1xCG 2xCG
Internal control voltage supply (for mains supply with neutral lead)
Transformer 400V/230V for internal control voltage supply (for mains supply without neutral lead)
@-Link AT4
Gateway to connect the Nordmann AT4 to a building management system. Two versions are available: BACnet/IP or LonWorks.
822 824 832 834
1xS-CVI 1xM-CVI 1xL-CVI
1532 1534
1xCT.. 2xCT.. 4xCT..
2362 2364
1xOPS 2xOPS 1xOPS 2xOPS
Conguration according to separate documentation
3262 3264
4564 4662 6462
6464
1xRFI
Trafo
6564 9064 13064
Steam cylinder for low water conductivity from 80 to 125 µS/cm
Nordmann AT4... (400 V/3~/50...60 Hz)
534 834 1534 2364 3264 4564 --- 6464 6564 9064 13064
1x
534A-L1x834A-L1x1534A-L1x2364A-L1x3264A-L1x4564A-L
--- 2x 3264A-L
--- 2x 4564A-L
---
17

3.7 Accessories

3.7.1 Accessories overview

Accessories for water installation
Nordmann AT4...
522 524 532 534
Filter valve Z261 (1 pc. per system)
Accessories for steam installation
522 524 532 534
Steam distribution pipe
(Details see chapter 3.7.2)
Steam distribution system MultiPipe
(Details see chapter 3.7.2)
Fan unit
(Details see chapter 3.7.2)
Steam hose / meter DS22
EcoTherm Insulation hose / meter ECT22 (DS22)
Condensate hose / meter KS10
––– ––– System 1 System 2 System 4
DS80 (FAN4 N...)
ECT80 (DS80)
822 824 832 834
822 824 832 834
1xDV41 1xDV71 2xDV71 4xDV71
1x
FAN4 N S D
or
FAN N S W
or
or
1532 1534
1532 1534
1x
FAN4 N M D
or
FAN N M W
2362 2364
2362 2364
3262 3264
Nordmann AT4...
3262 3264
1x
FAN4 N
L W
4564 4662 6462
4564 4662 6462
1x or 2x FAN4 N
L W
DS80 (FAN4 N...)
ECT60 (DS35)
ECT80 (DS80)
DS35
oder
or
6464
6464
2x
FAN4 N L W
6564 9064 13064
6564 9064 13064
4x
FAN4 N L W
Accessories for humidity control
Nordmann AT4...
522 524 532 534
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)
822 824 832 834
1532 1534
2362 2364
3262 3264
4564 4662 6462
6464
General accessories
Nordmann AT4...
522 524 532 534
All-weather protective housing Layout according to the separate data sheet
Remote Terminal 1 Terminal for the remote control of up to 8 humidiers
822 824 832 834
1532 1534
2362 2364
3262 3264
4564 4662 6462
6464
6564 9064 13064
6564 9064 13064
18

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 humidier. Important! Always select the longest possible steam distribution pipe (opti
mum humidication distance).
L
B
Steam distribution pipes for
Nordmann AT4
Type DV41-.. Type DV71-.. in mm
41200 200 210...400
41350 71350 350 400...600
41500 71500 500 550...750
41650 71650 650 700...900
41800 71800 800 900...1100
411000 711000 1000 1100...1300
411200 711200 1200 1300...1600
711500 1500 1600...2000
711800 1800 2000...2400
712000 2000 2200...2600
712300 2300 2500...2900
712500 2500 2700...3100
1)
Material: CrNi steel
1)
2)
Length (L) steam
distribution pipe
2)
special length on request
Duct width (B)
in mm
Note: If the humidication 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.
19
3.7.2.2 MultiPipe steam distribution system
H
B
The MultiPipe steam distribution system is used in ventilation ducts with a short humidication distance (for the calculation of the humidication dis tance refer to chapter 5.4.2). When ordering an MultiPipe system the duct dimension must be specied. Please consult the data in the following table.
MultiPipe Number of steam
connectors
System 1 1 32 (23)
System 2 2 65 (45) 4502200 4502200
System 4 4 130 (90) 4502500 8003200
1)
For duct widths <600 mm the value in brackets apply
Max. steam
capacity
in kg/h
1)
Duct dimensions
Width B
in mm
4501500 4501650
Height H
in mm
20
3.7.2.3 Fan units FAN4 N...
The fan units FAN4 N... – in combination with the steam humidiers Nor dmann AT4 – are used for direct room humidication. The fan units FAN4 N S D and FAN4 N M D are mounted directly on the humidier. The fan units FAN4 N S W, FAN4 N M W und FAN4 N L W are mounted separately
above the humidier to the wall.
The type and number of fan units are dependent on the steam capacity and on the type of the humidier and can be gathered from the table in chapter 3.7.1.
Note: Further information on the fan units FAN4... can be found in the sepa rate manual supplied with the fan unit.
Important note regarding the IP protection class: If a Nordmann AT4 with fan unit FAN4 N... shall be operated without the fan unit at a later date (e.g. retrotting for duct humidication) the open bores in the housing ceil ing must be sealed with plugs, otherwise the protection class IP21 is not assured anymore.
21

3.8 Standard delivery

The standard delivery includes:
– Steam humidier Nordmann AT4 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
1532, 1534, 2362, 2364
3262, 3264, 4564, 6564
4662, 6462, 6464, 9064, 13064
720 mm x 520 mm x 340 mm 14.0 kg
760 mm x 600 mm x 420 mm 19.5 kg
780 mm x 650 mm x 420 mm 31.0 kg
1045 mm x 430 mm x 820 mm 59.0 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 packaging.
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 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.
22

4 Notes for the planning engineer

4.1 Selecting the unit version

To select the unit version the following planning steps are required:
1. Calculating the required maximum steam capacity according chapter
4.1.1
2. Selecting the unit version from the table in chapter 4.1.2

4.1.1 Calculating the maximum required steam capacity

The maximum required steam capacity must be calculated based on one of the following formulas:
V • ρ
mD = • (x2 - x1)
1000
mD: maximum steam demand in kg/h V: volume of supply air portion per hour in m3/h (for indirect room humidi
cation) or room volume to be humidied per hour in m3/h (for direct room humidication)
ρ: specic gravity of air in kg/m ε: specic volume of air in m3/kg
x2: desired absolute room air humidity in g/kg x1: minimum absolute supply air humidity in g/kg
The values for ρ, ε, x Carrier-Diagram for moist air respectively.
Important notes:
– The required maximum steam capacity depends on the specic ap
plication and the installation. The calculated steam capacity based on the above formulas, the h,x diagram and the condition of the air to be humidied 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 room 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 humidier is operated on a mains circuit with a ground fault circuit interrupter.
and x1 can be gathered from the h,x-diagram or the
2
or
3
V
mD = • (x2 - x1)
1000 • ε
The total amount of losses depends on the entire system and must be taken into consideration when calculating the required steam capacity. If you have any questions regarding the calculation of the steam capacity please contact your Nordmann supplier.
– For systems where the max. required steam capacity varies extensively
(e.g. for test facilities or for systems with variable air volume ow, etc.), please contact your Nordmann supplier.
23

4.1.2 Selecting the unit

Nordmann AT4 4564 400V3
Heating voltage ** Max. steam ca-
pacity
in kg/h
5 534 x
8 834 x
15 1534 x
23 2364 x
400V3
(400 V/3~/50...60 Hz)
400V2
(400 V/2~/50...60 Hz)
230V3
(230 V/3~/50...60 Hz)
230V1
(230 V/1~/50...60 Hz)
32 3264 x
45 4564 x
64 6464 x
65 6564 x
90 9064 x
130 13064 x
5 524 x
8 824 x
5 532 x
8 832 x
15 1532 x
23 2362 x
32 3262 x
46 4662 x
64 6462 x
5 522 x
8 822 x
Model
Nordmann AT4
Unit size
Single
unit
small medium large large
Double
unit
** 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.
24

4.3 Selecting the control system

The various control systems
– System 1: Room humidity control
System 1 is suited for direct room humidication and air condition- ing systems with mainly recirculated air. The humidity sensor or humidistat respectively is preferably located in the room itself or in the exhaust air duct.
A1 humidity sensor B1 ventilation interlock B2 airow monitor B3 safety humidistat B4 humidistat
PII Internal P/PI controller PIE External continuous controller
(e.g. PI controller) Y input signal from A1
AT4
– System 2: Room humidity control with continuous limitation of the
supply air humidity
System 2 is suited for air conditioning systems with a large portion of supply air, low supply air temperature, post-humidication, or vari- able airow volume
. If the supply air hum idity exceeds the preset value, the continuous limitation is effected prior to the room hum idity control. The humidity sensor (A1) is preferably located in the exhaust air duct or in the room itself. The humidity sensor (A2) for the limitation of the supply air humidity is located in the supply air duct after the steam dis tribution pipe. This control system requires a continuous controller with the option to connect a second humidity sensor. Attention! The continuous limitation of the supply air humidity is no substitute for the safety humi distat.
A1/2 humidity sensor B1 ventilation interlock B2 airow monitor B3 safety humidistat
PII Internal P/PI controller PIE External continuous controller
(e.g. PI controller) Y input signal from A1 Z input signal from A2
AT4
25
– System 3: Supply air humidity control with continuous output limit-
ation
Supply air humidity control (humidity sensor installed in supply air duct) should be used only where room humidity control is impracticable for technical reasons. Such systems always require
a PIcontroller. The humidity sensor (A1) is located in the supply air duct after the steam distribution pipe. The humidity sensor (A2) for the continuous output limitation is located in the supply air duct before the steam distribution pipe. Such a system requires a PIcontroller with the option to connect a second humidity sensor.
A1/2 humidity sensor B1 ventilation interlock B2 airow monitor B3 safety humidistat
PII Internal PI controller PIE External PI controller
Y input signal from A1 Z input signal from A2
AT4
Which humidity control system for which application?
Application Location of the humidity sensor
room or exhaust air duct supply air duct
Air conditioning systems with:
– supply air portion up to 33% System 1 System 1
– supply air portion up to 66% System 1 or 2 System 2 or 3
– supply air portion up to 100% System 2 System 3
– supply air humidity control — System 3
Direct room humidication System 1 —
Please contact your Nordmann supplier, if your application meets the following conditions:
– Humidication of small rooms up to 200 m
3
– Air conditioning systems with a high number of air exchanges – Systems with variable air volume ow – Test facilities with extreme control accuracy requirements – Rooms with a high variation in max. steam capacity – Systems with temperature uctuations – Cold rooms and systems with dehumidication
26
Admissible input signals
see chapter 6.1 “Technical data”

5 Mounting and installation work

5.1 Important notes for mounting and installation work

Qualication 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 qualication 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 humidier 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 humidier 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).
27

5.2 Installation overviews

Installation overview duct humidication
A1 / A2
DV41
DV71
Pmax 1500 Pa Pmin -800 Pa
Steam installation
see chapter 5.4
Mounting the unit
see chapter 5.3
min. 300 mm
min. 20 %
–
min. 5 %
KS10
–
Rmin. 300 mm
Ømin.
200 mm
DS22
DS35
min. 20 %
min. 300 mm
Heating voltage **
K1
L1 L2 L3
PE
AT4
ext.
B3
Q5
XE1
L1 L2 L3
F5
L1 L2 L3
400 V/3~/50..60 Hz 230 V/3~/50..60 Hz
PE
Q5
F5
L1 L2
400 V/2~/50..60 Hz
PE
Q5
** on double units each
module has a separate heating voltage supply
+
F5
L1 N PE
230 V/1~/50..60 Hz
Control voltage
N
L1
XE3
Q6
PE
AT4
ext.
F6
L1 N PE
ONOFF
Q6
230 V/1~/50..60 Hz
External safety chain
Water installation
see chapter 5.5
125...1250 µS/cm
Electric installation
see chapter 5.6
28
G 1/2"
1...10 bar
1...40°C
G 3/4"
ø 31 mm
ø 14/7 mm
Z261
G 3/8"
≥ 40 mm
min. 50 cm
Continuous
control
XE4
A1
V+
+ –
P / PI
ONOFF
Q5
SC1
SC2
J
XE2
max.
∆p
AT4
ext.
B3
B2
B1
Ohmic humidity
controller
24V 5V
JP3
IN
XE4
GND
AT4
ext.
A2
IN
V+
140Ω...10kΩ
GND
AT4 ext.
24V On/Off
controller
JP3
XE4
A3
24V 5V
V+
On/Off
Z signal
LIM. SIGN.
GNDIN
IN
GND
AT4
ext.
X11
AT4
ext.
+ –
A4
P / PI
System overview room humidication
** on double units each
module has a separate heating voltage supply
Heating voltage **
K1
L1 L2 L3
Steam installation
see chapter 5.4
Mounting the unit
see chapter 5.3
Ø min.
100 mm
KS10
min. 20 %
–
Ø min.
100 mm
FAN4 N S ... W
FAN4 N M ... W
FAN4 N L ... W
min. 20 %
DS80
min. 20 %
KS10
–
B3
A1 / A2
FAN4 N S ... D
FAN4 N M ... D
Q6
PE
AT4
ext.
Q5
XE1
L1 L2 L3
F5
L1 L2 L3
400 V/3~/50..60 Hz 230 V/3~/50..60 Hz
PE
Q5
+
F5
L1 L2
400 V/2~/50..60 Hz
PE
Q5
F5
L1 N PE
230 V/1~/50..60 Hz
Control voltage
N
L1
L1 N
XE3
Q6
PE
AT4
ext.
F6
ONOFF
FAN4 N ...
L1 N PE
230 V/1~/50..60 Hz
Water installation
see chapter 5.5
125...1250 µS/cm
Electric installation
see chapter 5.6
G 1/2"
1...10 bar
1...40°C
G 3/4"
ø 31 mm
ø 14/7 mm
Z261
G 3/8"
≥ 40 mm
min. 50 cm
Q5
ONOFF
Continuous
control
XE4
V+
A1
+ –
P / PI
IN
GND
AT4
ext.
External safety chain
Ohmic humidity
controller
24V 5V
JP3
IN
XE4
V+
GND
AT4
ext.
A2
140Ω...10kΩ
SC1
SC2
J
XE2
XE4
A3
AT4 ext.
B3
max.
∆p
B2
B1
24V On/Off
controller
24V 5V
JP3
IN
V+
On/Off
GND
AT4
ext.
29

5.3 Mounting the unit

5.3.1 Notes on locating the unit

min. 400 mm
min. 250 mm
Y
min. 400 mm
X
Z
Nordmann AT4 ...
522 524 532 534
822 824 832 834
min. 600 mm
1532 1534
2362 2364
min. 600 mm
3262 3264
4564 4662 6462
6464
6564 9064 13064
30
Dimensions
Housing dimensions in mm
Weights
Net weight in kg 12 12 19 19 28 28 62 62 30 64 64
Operating weight in kg 17 17 29 29 65 65 116 116 67 116 116
X 388 388 468 468 563 563 966 966 563 966 966
Y 255 255 345 345 354 354 354 354 354 354 354
Z 575 575 620 620 640 640 640 640 640 640 640
The installation site of the steam humidier depends largely on the location of the steam distributor (see chapter 5.4). To ensure proper functioning of the steam humidier and to obtain an optimal efciency, the following points must be considered and observed when choosing the location for the steam humidier:
– Install the steam humidier so that the length of the steam hose is kept
as short as possible (max. 4 m) and that the minimum bend radius (R= 300 mm) and up-slope (20 %) or down-slope (5 %) of the steam hose is observed (see chapter 5.4.5).
– The steam humidiers Nordmann AT4 are designed for wallmount
ing. Make sure that the construction (wall, pillar, oormounted console, etc.) to which the humidiers are to be mounted, offers a sufciently high load-bearing capacity (take notice of the weight information found in the dimensions and weights table above), and is suitable for the installation.
CAUTION!
Do not mount the steam humidier directly to the ventilation duct (insufcient stability).
– The back panel of the Nordmann AT4 is retaining heat during operation
(max. surface temperature of the metal housing approx. 60  70 °C). Make sure, therefore, that the construction (wall, pillar, etc.) to which the unit is to be mounted, does not consist of heatsensitive material.
– Install the steam humidier in such a manner that it is freely accessible
with sufcient space available for maintenance purposes (refer to the above illustration for minimum distances).
– The Nordmann AT4 is protected according to IP21. Make sure the units
are installed in a dripproof location and the admissible ambient condi tions are complied with.
– The steam humidier Nordmann AT4 may only be installed in rooms
with a oor drain.
CAUTION!
If for some reason the Nordmann AT4 must be installed in a location without oor drain, it is mandatory to provide a leakage monitoring device to safely interrupt the water supply in case of leakage.
– When xing the Nordmann AT4 use only the xing materials supplied
with the unit. If xing with the materials supplied is not possible in your particular case, select a method of xing that is of similar stability.
– The Nordmann ES4 is designed for installation and operation within
buildings (admissible temperature range see chapter 6.1). For outdoor operation the Nordmann AT4 must be placed in a weather protective housing. If ambient temperatures near or below the freezing point have to be expected, the protective housing must equipped with a thermostat controlled heating of sufcient capacity. The water supply pipe must be equipped with a traceheating and must be insulated up to the protective housing.
31
5.3.2 Mountingthehumidier
b
c
b
a
A
A
Dimension Unit type
522, 524, 532, 534, 822, 824,
832, 834
a 204,0 mm 205.0 mm 205.0 mm
b 40,0 mm 50.0 mm 52.5 mm
c 150,0 mm 210.0 mm 260.0 mm
BB
1532, 1534,
2362, 2364
3262, 3264,
4564, 6564
Dimension Unit type
4662, 6462, 6464, 9064, 13064
b
c
A
d
A
d
A
c
A
b
a
A
BB
a 203.0 mm
b 43.5 mm
c 258.0 mm
d 181.5 mm
B
B
32
Procedure
1. Mark the attachment points “A” for the wall support at the desired position with the help of a spirit level. Then, drill holes diameter: 8 mm, depth: 40 mm.
2. Insert the supplied plastic plugs, and x the wall support to the wall with the screws supplied. Before thightening the screws adjust wall support horizontally using a spirit level.
3. Unlock the screw(s) of the front panel(s) (steam side), then remove the front panel(s).
4. Unmount the steam cylinder(s) (see Nordmann AT4 operating instruc tions chapter 6.3.1).
5. Hang up the unit onto the wall support. Then, x the unit to the wall support using the supplied screws “B”.
6. Remount the steam cylinder(s) (see Nordmann AT4 operating instruc tions chapter 6.3.1).
7. Reattach the front panel(s) and secure it with the screw(s).

5.3.3 Inspecting the installed unit

Check the following points:
Is the unit installed in the correct place (see chapter 5.3.1)?
Is the supporting surface stable enough?
Is the unit correctly aligned, vertically and horizontally?
Is the unit properly secured (see chapter 5.3.2)?
Has/have the front panel(s) of the unit been relocated and correctly xed
with the screw(s)?
33

5.4 Steam installation

5.4.1 Overview steam installation

DV41
DV71
Pmax 1500 Pa Pmin -800 Pa
FAN4 N S ... W
FAN4 N M ... W
FAN4 N L ... W
DS80
KS10
min. 20 %
min. 20 %
–
min. 300 mm
+
min. 20 %
–
KS10
min. 5 %
200 mm
–
Rmin. 300 mm
Ømin.
DS22
DS35
min. 20 %
min. 300 mm
+
34
Ø min.
100 mm
KS10
min. 20 %
–
Ø min.
100 mm
FAN4 N S ... D
FAN4 N M ... D

5.4.2 Positioning of the steam distribution pipes

The location for the steam distribution pipes should be determined at the time of dimensioning the air conditioning system. Please note the following instructions to ensure proper humidication of the duct air.
Calculating the humidication distance
The water vapour, emitting from the steam distribution pipes, requires a certain distance to be absorbed by the ambient air so that it is no longer visible as steam. This distance is referred to as humidication distance
“B
” and serves as a basis for the determination of the minimum distances
N
from the upstream components in the system.
BN: Humidication distance B E: Expansion and mixing zone
φ1: Supply air humidity before humidication φ2: Supply air humidity after humidication
N
The calculation of the humidication distance “BN” is dependent on several factors. For a rough estimation of the humidication distance “BN”, the fol lowing table is useful. Recommended standard values listed in this table are based on a supplyair temperature range of 15 °C to 30 °C. The values given in bold type only apply to steam distribution pipes DV41-... and
DV71-..., the values in brackets apply to the MultiPipe steam distribu­tion system.
Humidity at inlet
ϕ1 in %rh
40 50 60 70 80 90
5 0,9 (0,22) 1,1 (0,28) 1,4 (0,36) 1,8 (0,48) 2,3 (0,66) 3,5 (1,08)
10 0,8 (0,20) 1,0 (0,26) 1,3 (0,34) 1,7 (0,45) 2,2 (0,64) 3,4 (1,04)
20 0,7 (0,16) 0,9 (0,22) 1,2 (0,30) 1,5 (0,41) 2,1 (0,58) 3,2 (0,96)
30 0,5 (0,10) 0,8 (0,17) 1,0 (0,25) 1,4 (0,36) 1,9 (0,52) 2,9 (0,88)
40 – 0,5 (0,11) 0,8 (0,20) 1,2 (0,30) 1,7 (0,45) 2,7 (0,79)
50 – – 0,5 (0,13) 1,0 (0,24) 1,5 (0,38) 2,4 (0,69)
60 – – – 0,7 (0,16) 1,2 (0,30) 2,1 (0,58)
70 – – – – 0,8 (0,20) 1,7 (0,45)
φ1 in %rh: Relative supply air humidity prior to humidication at the lowest supply air
temperature
φ2 in %rh: Relative supply air humidity after the steam distribution pipe at maximum
capacity
For duct widths <600 mm the humidication distance for the MultiPipe system increases by approx. 50%
Length of humidication distance BN in m
Humidity at outlet ϕ2 in %rh
35
Example
given: ϕ1= 30 %rh, ϕ2= 70 %rh
humidication distance B
(0.36 m for steam distribution system MultiPipe)
Note: If the humidication distance 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 MultiPipe must be used. If this is the case, contact your Nordmann supplier.
Minimum distances to be observed
To prevent the water vapour, that is emitting from the steam distribution pipe, from condensing on downstream system components, a minimum distance to the steam distribution pipe must be observed (depends on the humidi cation distance “BN”).
before/after constriction
50 mm
N
0.5 x B
: 1,4 m
N
after expansion
N
0.5 x B
before bend
N
1 x B
before branch
N
1 x B
36
before diffuser
N
1 x B
before control sensor
N
5 x B
before/after lter/register before/after fan, zone exit
N *
1.5 x B
* 2,5 x BN before aerosol lter
+
50 mm
1 x B
50 mm
N
1 x B
N
Installation notes and dimensions
The steam distribution pipes are designed for either horizontal installation (on the duct wall) or, with accessories, for vertical installation (in the duct oor). The outlet orices should always point upwards and at right
angles to the airow.
If possible, the steam distribution pipes should be installed on the pressure
side of the duct (max. duct pressure 1500 Pa). If the steam distribution pipes are installed on the suction side of the duct, the maximum vacuum
must not exceed 800 Pa.
Select a location for the installation, tailored to suit your duct (see the fol lowing illustrations) and position the steam distribution pipes in the duct so that a uniform distribution of steam is achieved.
37
Positioning the steam distribution pipes in the duct
In positioning the steam distribution pipes, the following dimensions should be observed:
H
1/2
1/2
2/3
H
1/3
min
h
H
1/2
1/2
H min.= 250 mm H ≥400 mm H min.= 200 mm
1/3
1/3
1/3
H min.= 300 mm
H
H min.= 400 mm
3/7
2/7
2/7
min
g
3/7
H
2/7
2/7
H min.= 350 mm
H
H
H min.= 720 mm
g min.= 100 mm h min.= 85 mm
2/6
1/6
1/6
1/6
1/6
1/5
min
g
min
g
min
g
2/6
1/6
1/6
H
1/6
1/6
H min.= 600 mm
1/5
1/5
1/5
1/5
H min.= 500 mm
H
38
Note: When locating the MultiPipe steam distribution system please note the instructions in the separate documentation for this product.
Guidelines for dimensioning the ventilation ducts
– To facilitate the installation of the steam distribution pipes and for control
purposes, a sufciently sized control opening should be planned.
– Within the range of the humidication distance, the ventilation duct
should be waterproofed.
– Air ducts passing through cold rooms should be insulated to prevent
the humidied air from condensing along the duct wall.
– Poor airow conditions within the air duct (e.g. caused by obstacles,
tight bends, etc.) can lead to condensation of the humidied air.
– Steam distribution pipes must not be mounted to round ducts.
If you have questions relating to the dimensioning of ventilation ducts in combination with steam humidiers Nordmann AT4, contact your Nordmann supplier.

5.4.3 Installing the steam distributors

Detailed information on the installation of steam distribution pipes DV41 .., DV71... and MultiPipe steam distribution system can be found in the separate mounting instructions for these products.
39

5.4.4 Positioning and mounting of the fan units FAN4 N...

Fan unit FAN4 N...
The fan units FAN4 N S D and FAN4 N M D are mounted directly on the humidier. The fan units FAN4 N S W, FAN4 N M W und FAN4 N L W are
mounted separately above the humidier to the wall. To allow the steam coming from the fan unit to spread out evenly, without condensing on obsta cles (ceilings, joists, pillars, etc.), the following minimum dimensions must be observed when selecting the location for the fan unit.
D
D
D
B
C
A
D
B
E
C
A
40
FAN4 N S W FAN4 N M W FAN4 N L W
max. 8 kg/h 15 kg/h 23 kg/h 45 kg/h
m
D
A min. 4.0 m 6.0 m 8.0 m 10.0 m B min. 1.0 m 1.0 m 1.0 m 1.5 m C approx. 2.2 m 2.2 m 2.2 m 2.2 m D approx. 1.0 m 1.0 m 1.0 m 1.5 m E min. 1.0 m
E max. (max. steam hose length) 4.0 m (recommended: 2.0 m)
Note: The minimum spaces in the table apply for a room atmosphere of 15 °C and max. 60 %rh. For lower temperatures and/or higher humidity the values should be adjusted accordingly.
Note: In order to achieve a uniform distribution of the humidity within the room, additional factors such as the room size, the room height, etc., must be taken into consideration besides observing the minimum distances for the fan units FAN4 N... If you have questions concerning the direct room humidication, please contact your Nordmann supplier.
Further information is provided in the separate installation and operating instructions for the corresponding fan unit.

5.4.5 Installing the steam and condensate hose

Important! Use original steam and condensate hose from your Nordmann supplier exclusively. Other types of hoses can cause undesired operational malfunctions.
Instructions for the hose layout
The hose layout depends on the position of the steam distribution pipe:
– Steam distribution pipe is mounted more than 500 mm above the top
edge of the humidier:
min. 20 %
+
Ømin. 200 mm
min. 20 %
–
Rmin. 300 mm
min. 300 mm
min. 20 %
max. 4 m
min. 20 %
+
min. 300 mm
Ømin. 200 mm
min. 300 mm
Rmin. 300 mm
max. 4 m
min. 300 mm
–
Initially, lead the steam hose with an upslope of at least 20% over a minimum height of 300 mm, then lead the hose with a minimum upslope of 20% and/or a minimum downslope of 5% to the steam
distribution pipe.
The condensate hose is led down to the humidier with a minimum slope
of 20 %, in the form of a
siphon (min. hose bend diameter Ø200 mm)
and is to be connected to the appropriate connector on top of the unit. Note: If your unit feeds a number of steam distribution pipes, the indi vidual condensate hoses are to be led into a discharge funnel. Important! Before putting the unit into operation, the siphon of the condensate hose must be lled with water.
41
min. 20 %
+
max. 4 m
min. 300 mm
Rmin. 300 mm
min. 5 %
–
– Steam distribution pipe is mounted less than 500 mm above the top
edge of the humidier:
min. 20 %
–
200 mm
Ømin.
min. 300 mm
min. 20 %
Obstacle
+
Rmin. 300 mm
max. 4 m
Install condensate drain (accessory)
at the lowest point
Initially, the steam hose is led with an upslope of at least 20 % over a minimum height of 300 mm above the top edge of the humidier and then down to the steam distribution pipe with a minimum slope of 5 %.
min. 5 %
–
Rmin. 300 mm
min. 20 %
–
Ømin.
200 mm
min. 20 %
min. 300 mm
+
min. 300 mm
Ømin.
200 mm
min. 20 %
–
42
The condensate hose is led down with a minimum slope of 20 %, in the form of a siphon (min. hose bend diameter Ø200 mm), directly into a discharge funnel. Important! Before putting the unit into operation, the siphon of the condensate hose must be lled with water.
– The steam hose should be kept as short as possible (max. 4 m) while
observing the minimum bend radius of 300 mm. Important! Allow ance must be made for a pressure loss of approx. 100 Pa per meter steam hose. Note: If your particular installation exceeds the maximum steam hose length of 4 m contact your Nordmann representative. In any case, steam hoses longer than 4 m must be insulated in their entire length (e.g. with
insulation hose “EcoTherm”).
– Reductions in the cross section such as kinks should be avoided through
out the entire length of the hose. The installation of a stop cock in the steam hose is not permissible.
– Steam hoses must be prevented from sagging (condensate pockets); if
necessary, support with pipe clamps, trough, or wall brackets, or install a condensate drain in the steam hose.
– Important! When deciding on the length and layout of the hose, it
should be noted that the steam hose may become somewhat shorter with progressive ageing.
– Important note regarding the IP protection class: to meet the IP21
protection class the steam hose lead through on top of the housing must be sealed with commercially available, heat resistant sealant.
Securing the hose
The steam hose must be secured to the steam distribution pipe and humidi er steam outlet by means of hose clamps. Caution! Do not overtighten the hose clamp on the steam connector of the steam humidier.
43
Steam line with xed piping
For steam lines with xed piping, the same instructions apply to the laying of the piping as already described.
min. 20 %
+
max. 4 m
min. 20 %
Rmin. 5 x D
min. 300 mm
Ømin. 200 mm
min. 300 mm
–
The following additional notes should be observed:
– The minimum internal diameter of the steam line (diameter depend
ent on the steam humidier) should be applied over the whole length of the piping.
– Use exclusively copper pipe or stainless steel (min. DIN 1.4301).
– To minimize the condensate formation (=loss), the steam pipes must
be insulated.
– The minimum bend radius for solid pipes is 5 x internal diameter.
– Connection of the steam pipes to the steam distribution pipe and steam
humidier is effected by means of short lengths of steam hose secured with hose clamps.
– Important! Allowance must be made for a pressure loss of approx.
100 Pa per meter length or per 90° bend.
44

5.4.6 Common steam and condensate line errors

2.
1.
3.
4.
5.
1. Steam hose not led at least 300 mm perpendicularly upwards before rst bend.
2. Minimum bend radius of steam hose of 300 mm not maintained (forming of condensate).
3. Siphon of the condensate hose not at least 300 mm below the steam distribution pipe.
4. No condensate drain installed at vertical transition.
5 . Steam hose not sloped (slope min. 20 %).
45

5.4.7 Inspecting the steam installation

Use the following check list to ascertain that the steam installation was performed correctly:
– Steam distributors
Steam distributors (steam distribution pipe or MultiPipe steam distri
bution system) correctly positioned and secured (screws tightened)?
Are the outlet orices at right angles to the air ow direction?
– Steam hose
Maximum length of 4 m?
Minimum bend radius of 300 mm (5 x internal diameter with xed
piping)?
Have the instructions for hose positioning been followed?
Steam hose: no sagging (condensate pocket) or condensate drain
with siphon (hose bend with a minimum diameter of 200 mm) installed at the lowest point?
Rigid steam lines: properly insulated? Correct installation material
used? Minimum internal diameter maintained?
Steam hose(s) securely attached with clamps?
Heat expansion during operation and shortening of the hose with
ageing taken into consideration?
Is the lead through of the steam hose on top of the unit sealed
(safeguarding of the IP21 protection)?
– Condensate hose
Downslope of at least 20 %?
Siphon (min. ø200 mm) existing and lled with water?
Condensate hose correctly xed and not kinked?
46

5.5 Water installation

5.5.1 Overview water installation

G 3/4"
ø 31 mm
ø 14/7 mm
G 1/2"
125...1250 µS/cm
1...10 bar
1...40°C
Z261
G 3/8"
≥ 40 mm
ø 31 mm
G 3/4"
min. 50 cm
G 3/8"
G 3/4"
125...1250 µS/cm
1...10 bar
1...40°C
ø 31 mm
ø 14/7 mm
G 1/2"
min. 50 cm
Z261
≥ 40 mm
47

5.5.2 Notes on water installation

Water supply
The water supply is to be carried out according to the gure found in chapter
5.5.1 and the applicable local regulations for water installations. The indicated connection specications must be observed.
– The installation of the lter valve (accessory “Z261”, alternatively a
shutoff valve and a 5 µm water lter can be used) should be made as close as possible to the steam humidier.
– Admissible mains pressure 1.0 to 10.0 bar (hammer-free system)
For mains pressures >10 bar, the connection must be made via a pres sure reducing valve (adjusted to 1.0 bar). For mains pressures <1.0 bar please contact your Nordmann supplier.
– Notes on water quality:
– For the water supply of the Nordmann AT4, use exclusively untreated
– The use of additives such as corrosion inhibitors, disinfectants,
– If the Nordmann AT4 shall be operated with softened or partly sof
drinking water.
etc. is not allowed, since these additives may endanger health and affect proper operation.
tened water, please contact your Nordmann supplier.
– The connection material must be pressure-proof and certied for use
in drinking water systems.
– Important! Before connecting the water line, the line should be well
ushed out.
CAUTION!
The thread at the humidier connection is made of plastic. To avoid overtightening, the union nut of the water pipe must be tightened by
hand only.
Water drain
The water drain is to be carried out according to the gure found in chapter
5.5.1 and the applicable local regulations for water installations. The indi cated connection specications must be observed.
– Make sure that the drain pipe is correctly xed and easily accessible for
inspections and cleaning purposes.
– The draining temperature is: 80…90 °C. Use temperatureresistant
installation materials only!
– The two drain hoses of a double unit must be led into separate funnels
with siphon.
48

5.5.3 Inspecting the water installation

Check the following topics:
– Water supply
Has lter valve (accessory “Z261”) or shutoff valve and 5 µm water
lter respectively been installed in supply line?
Have admissible water pressure (1 – 10 bar) and admissible tem
perature (1 – 40 °C) been observed?
Does the supply capacity match the humidier and is the minimum
inside diameter of the supply pipe maintained throughout the entire length?
Are all components and pipes properly secured and are all threaded
connections securely tightened?
Is the water system properly sealed?
Does the water supply installation meet the requirements of the local
regulations for water installations?
– Water drain
Is the minimum inside diameter of the drain pipe of 40 mm maintained
throughout the entire length?
Has drain pipe been installed with a downslope of at least 10 %?
Has the heat resistance of the material used been veried to be at
least 100 °C?
Is the drain hose properly secured (hose clamps at unit connection
tightened)?
Does the water drain installation meet the requirements of the local
regulations for water installations?
49

5.6 Electric installation

5.6.1 Wiring diagram Nordmann AT4 single units

ext.
AT4
PE
PE
PE
Remote Terminal
Unit 2Unit 3Last Unit
L1 L2 L3
K1
X3
L'N
X5
S1S2
LEVEL SENS.
X15
JP5 JP4 JP1
D+ D– GND 5V 24V
X15
JP5 JP4 JP1
D+ D– GND 5V 24V
X15
JP5 JP4 JP1
D+ D– GND 5V 24V
X15
JP5 JP4 JP1
D+ D– GND 5V 24V
CURRENT SENSOR
from contactor to cylinder
X15
F4 315mAT
REMOTE
D+ D– GND 5V 24V
LINK UP
J2
J9
Control board Power board
JP5 JP4 JP1
X4
L'NL'N
X16
L1FUNL1SWNSW
L'N
INLET DRAIN CONTA.
SC
F1 6.3 AT
CONTACTORDRAININLETSC SYSTEM
SAFETY CHAIN
LEVEL SENSOR
GND
24V
F3 315mAT
5V
EXTERNAL CON.CPU BOARD
J4
24V 5V
SWITCH
JP3
X2
PEPESC2SC1NL1
MAIN SUPPLYMODULE B
PEP1NP
EXT. SUP.
5V GND 24V
GNDIN
LIM. SIGN.
GNDINV+
CONT. SIGN.
BAT
X1
X6
X14
X11
X10
J1
J3
L1 L2 L3
N
XE1
XE2XE3XE4
SC2 SC1
PE
L1
IN V+
GND
Q5
L1 L2 L3
400 V/3~/50..60 Hz
F5
230 V/3~/50..60 Hz
Q5
L1 L2
400 V/2~/50..60 Hz
F5
B3KB2
max.
Q5
∆p
L1 N PE
230 V/1~/50..60 Hz
F5
B1
J
L1 N PE
F6
Q6
230 V/1~/50..60 Hz
M
L1 N
GND IN V+
24V 5V
JP3
A2
P / PI
+ –
P / PI
+ –
A1 A4
J2
140Ω...10kΩ
24V 5V
JP3
IN V+
On/Off
A3
H1
J1
2 3 4 5 6 7 8 9 10
Error Service Steam UnitOn
J1
J4
1
X1
50
24 VDC supply (V+) (315 mA, slow acting)
(315 mA, slow acting)
A1 Continuous controller (active) or humidity sensor
A2 Controller (passive), set jumper on JP35V
A3 On/Off controller, set jumper on JP324V
A4 Limitation signal
BAT Backup battery (CR2032, Lithium 3V)
B1 Ventilation interlock
B2 Safety humidistat
B3 Airow monitor
F1 Internal fuse “Power board” (6.3 A, slow acting)
F3 Internal fuse “Power board” control signal
F4 Internal fuse “Power board”
F5 External fuse heating voltage supply
F6 External fuse control voltage supply
H1 Remote operating and fault indication (option “RFI”)
J Short circuited, if no external monitoring devices
are connected
J2 Link Up system “Power board”
JP1 End resistor Remote Terminal
JP3 Jumper control signal
JP4 Pull up resistor Remote Terminal
JP5 Pull down resistor Remote Terminal
K External safety chain (230V/5A)
K1 Main contactor
M Fan unit
Q5 External service switch heating voltage supply
Q6 External service switch control voltage supply
XE1 Connection terminal heating voltage
XE2 Connection terminal safety chain
XE3 Connection terminal control voltage
XE4 Connection terminal control signal Y
X15 Connection terminal remote panel

5.6.2 Wiring diagram Nordmann AT4 double units

ext.
AT4
PE
PE
PE
Remote Terminal
Unit 2Unit 3Last Unit
L1 L2 L3
K1
Heating Module A
X3
L'N
X5
S1S2
LEVEL SENS.
X15
JP5 JP4 JP1
D+ D– GND 5V 24V
X15
JP5 JP4 JP1
D+ D– GND 5V 24V
X15
JP5 JP4 JP1
D+ D– GND 5V 24V
X15
JP5 JP4 JP1
D+ D– GND 5V 24V
from contactor to cylinder
CURRENT SENSOR
X15
F4 315mAT
JP5 JP4
REMOTE
JP1
D+ D– GND 5V 24V
LINK UP
J2
J9
X4
L'NL'N
X16
L1FUNL1SWNSW
L'N
INLET DRAIN CONTA.
SC
F1 6.3 AT
CONTACTORDRAININLETSC SYSTEM
SAFETY CHAIN
LEVEL SENSOR
GND
24V
F3 315mAT
5V
EXTERNAL CON.CPU BOARD
J4
24V 5V
SWITCH
JP3
X2
PEPESC2SC1NL1
MAIN SUPPLYMODULE B
PEP1NP
EXT. SUP.
5V GND 24V
GNDIN
LIM. SIGN.
GNDINV+
CONT. SIGN.
BAT
X1
X6
X14
X11
X10
J1
J3
L1 L2 L3
N
XE1
XE2XE3XE4
SC2 SC1
PE
L1
GND IN V+
Q5
L1 L2 L3
400 V/3~/50..60 Hz
F5
230 V/3~/50..60 Hz
Q5
L1 L2
400 V/2~/50..60 Hz
F5
Q5
B3KB2
max.
∆p
L1 N PE
230 V/1~/50..60 Hz
F5
B1
J
L1 N PE
F6
Q6
230 V/1~/50..60 Hz
M
L1 N
GND IN V+
24V 5V
JP3
A2
P / PI
+ –
P / PI
+ –
A1 A4
140Ω...10kΩ
24V 5V
JP3
IN V+
On/Off
A3
H1
J2
J1
2 3 4 5 6 7 8 9 10
Error Service Steam UnitOn
J1
J4
1
X1
CURRENT SENSOR
X25
S1S2
Extension board Module B Control board Power board
humidity sensor
A1 Continuous controller (active) or
A2 Controller (passive), set jumper on JP35V
A3 On/Off controller, set jumper on JP324V
A4 Limitation signal
CPU BOARD
J3
MAINSC SYSTEM DRAIN INLET
LEVEL SENSOR
MAIN
INLETDRAINSC
LEVEL SENS.
X23
X24
(6.3 A, slow acting)
BAT Backup battery (CR2032, Lithium 3V)
B1 Ventilation interlock
B2 Safety humidistat
B3 Airow monitor
F1 Internal fuse “Power board”
F3 Internal fuse “Power board” control signal
X14
EXT. SUP.
5V GND 24V
PEP1NP
MODULE B
L' N L' N L' N L' N
X6
X27
24 VDC supply (V+) (315 mA, slow acting)
(315 mA, slow acting)
F4 Internal fuse “Power board”
F5 External fuse heating voltage supply
F6 External fuse control voltage supply
L1 L2 L3
Heating Module B
K1
(option “RFI”)
devices are connected
H1 Remote operating and fault indication
J Short circuited, if no external monitoring
J2 Link Up system “Power board”
JP1 End resistor Remote Terminal
L1 L2 L3
XE1
JP3 Jumper control signal
JP4 Pull up resistor Remote Terminal
JP5 Pull down resistor Remote Terminal
K External safety chain (230V/5A)
K1 Main contactor
M Fan unit
Q5 External service switch heating
PE
L1 L2 L3
400 V/3~/50..60 Hz
230 V/3~/50..60 Hz
F5
Q5
voltage supply
voltage supply
Q6 External service switch control
XE1 Connection terminal heating voltage
Q5
XE2 Connection terminal safety chain
XE3 Connection terminal control voltage
XE4 Connection terminal control signal Y
X6 Connection to extension board Module B
X14 Voltage supply extension board
X15 Connection terminal remote panel
PE
L1 L2
400 V/2~/50..60 Hz
F5
Q5
L1 N PE
230 V/1~/50..60 Hz
F5
51

5.6.3 Notes on electric installation

Important notes
– The electric installation must be carried out according to the wiring dia
gram in chapter 5.6.1, the notes on electric installation as well as the applicable local regulations. All information given in the wiring diagram must be followed and observed.
– All cables must be lead into the unit via the cable openings equipped with
cable glands (e.g. option “CGcable gland”). The cable for the heating voltage supply must be lead into the unit from the bottom via the cable opening equipped with the clamp strap. Fix the cable with the clamp strap.
– Make sure the cables do not scrub on any components or become a
stumbling trap.
– Maximum cable length and required cross section per wire must be
observed.
– The supply voltages must match the respective voltages (heating and
control voltage) stated in the wiring diagram.
52
Heating voltage supply
CAUTION!
Before connecting, ensure that the mains voltage corresponds with the heating voltage for the unit (see type plate).
The connection to the heating voltage is made in accordance with the wir ing diagram, to the terminal block “XE1” in the control compartment. The customer is to install a service switch “Q5” (disconnecting device with a minimum contact opening of 3 mm is an essential requirement) and a fuse group “F5” (essential requirement, fuses are to be as detailed in the fol lowing table) in the supply line. The supply wiring is to be fed into the unit via the clamp strap on the bottom of the unit.
Note: Double units have separate heating voltage supplies for each cylinder.
Heating voltage Max. steam
capacity
[kg/h]
5 534 3.8 5.4 3x 10
8 834 6.0 8.7 3x 16
15 1534 11.3 16.2 3x 25
23 2364 17.3 24.9 3x 35
400V3
(400 V/3~/50...60 Hz)
400V2
(400 V/2~/50...60 Hz)
230V3
(230 V/3~/50...60 Hz)
230V1
(230V/1~/50...60Hz)
32 3264 24.0 34.6 3x 50
45 4564 33.8 48.7 3x 80
64 6464 2x 24.0 2x 34.6 2x (3x 50)
65 6564 48.8 70.4 3x 100
90 9064 2x 33.8 2x 48.7 2x (3x 80)
130 13064 2x 48.8 2x 70.4 2x (3x100)
5 524 3.8 9.4 3x 16
8 824 6.0 15.0 3x 25
5 532 3.8 9.4 3x 20
8 832 6.0 15.1 3x 25
15 1532 11.3 28.2 3x 40
23 2362 17.3 43.3 3x 63
32 3262 24.0 60.2 3x 100
46 4662 2x 17.3 2x 43.3 2x (3x 63)
64 6462 2x 24.0 2x 60.2 2x (3x 100)
5 522 3.8 16.3 25
8 822 6.0 26.1 40
Nordmann
AT4 ..
Nominal power
[kW]
Nominal
current
[A]
Main fuses F5
[A]
The crosssection of the mains cable must comply with the applicable local regulations.
53
Control voltage supply
CAUTION!
– Before connecting, ensure that the mains voltage corresponds with
the control voltage of the unit (230 V/1 50…60 Hz).
– The humidier must only be connected to a mains supply with a
protective conductor.
The connection to the control voltage is made in accordance with the wir ing diagram, to the terminal block “XE3” in the control compartment. The customer is to install a service switch “Q6” (all pole disconnecting device with a minimum contact opening of 3 mm) and a “F6” fuse (max. 10 A slow acting) in the supply line (these are both essential requirements).
The crosssection of the mains cable must comply with the applicable local regulations (minimum of 1.5 mm2).
External safety circuit
To guarantee the safety of the humidication system, monitoring the opera tion by means of a safety circuit is an absolute requirement.
To accomplish this, the potential-free contacts (max. contact loading
250V/5A)
of external moni t or ing devices (e.g. safety high limit humidistat,
airow monitor, ventilation interlock, etc.) are connected in series to the contacts “SC1” and “SC2” of the terminal block “XE2” in accordance with the wiring diagram.
DANGER! Danger of electric hazard!
Mains voltage is connected to terminal block “XE2” (up to 240 V). The steam humidier must therefore be isolated from the mains supply (heat ing and control voltage), before starting the connection work.
If, for whatever reason, no external monitoring devices are connected, a connecting bridge “J” must be installed on the contacts “SC1” and “SC2” of the terminal block “XE2”.
Do not apply any extraneous voltage to the terminals.
The crosssection of the cable must comply with the applicable local regula tions (minimum of 1 mm2).
54
Remote operating and fault indication H1 (Option “RFI”)
The optional remote operating and fault indication PCB is to be connected via a at ribbon cable to the corresponding connector on the control board. The optional remote operating and fault indication PCB contains four potentialfree relay contacts for the connection of the following operating and fault indications:
– “Error”: This relay is activated if an error is present.
– “Service”: This relay is activated when the set service interval has
expired.
– “Steam”: This relay closes as soon as the unit produces steam.
– “Unit On”: This relay closes as soon as the unit is switched on via the
main switch.
The maximum contact loading is 250V/8A.
Appropriate suppressor modules are to be used for the switching of relays and miniature contactors.
Control signal (Y)
– External continuous humidity controller or humidity sensor (A1)
An external continuous humidity controller or a humidity sensor (operation with internal P/PI controller) is to be connected to the contacts “IN” (+) and “GND” (–) of the terminal block “XE4” in the control compartment. Note: the control signal must be set via the control software of the hu midier. The admissible control signals are stated in the technical data.
– Ohmic humidity controller (passive)
An ohmic humidity controller (140Ω...10kΩ) is to be connected to the contacts “V+”, “IN” and “GND” of the terminal block “XE4” in the control compartment. Note: for the ohmic humidity controller a jumper must be set on “JP35V”.
– 24 VDC On/Off humidistat (passive)
An 24 VDC On/Off humidistat is to be connected to the contacts “V+” and “IN” of the terminal block “XE4” in the control compartment. Note: for the 24 VDC On/Off control a jumper must be set on “JP324V”.
Air supply limit signal (signal Z)
– External air supply limiter (A4)
An external air supply limiter (P/PI humidity controller) is to be connected to the contacts “IN” (+) and “GND” (–) of the terminal plug “X11” on the power board. Note: the air supply limiter must be activated and congured via the control software of the humidier. The admissible limit signals are stated in the technical data.
Connection of the fan units FAN4 N...
See separate documentation of the corresponding fan unit.
55
Connection of the remote terminal (Option RP)
The optional remote terminal is to be connected via a fourwire cable to the corresponding contacts of terminal block X15 on the power board of one of the humidiers.
Addtional humidiers (max. 8) to be remote controlled are connected in series via the contacts “D+” und “D–” of terminal block X15 to the humidier connected to the remote terminal using a twowire cable.
The maximun cable length between the units is 50 m. Cable section 0.5 mm2.
The termination of the remote terminal bus is established via the jumpers JP1, JP4 and JP5 on the power boards of the remote terminal and the con nected humidiers (see table below).
Jumper settings for operation with optional remote terminal
Jumper Function Remote terminal Unit(s)
in between JP1 120Ω end resistor X X JP4 Pull up resistor X JP5 Pull down resistor X
Last unit in
the chain
D+ D– GND 5V 24V
JP1
JP4
JP5
X15
D+ D– GND 5V 24V
JP1
JP4
JP5
Unit 2Unit 3Last Unit
JP1
JP4
X15
JP5
X15
D+ D– GND 5V 24V
Remote Terminal
D+ D– GND 5V 24V
JP1
JP4
JP5
X15
ext.
AT4
from contactor to cylinder
X15
D+ D– GND 5V 24V
REMOTE
LINK UP
JP1
JP4
EXTERNAL CON.
JP5
F4 315mAT
CURRENT SENSOR
56
Internal control voltage supply via option CVI or option Trafo
– Option CVI (mains supply with neutral lead):
For mains voltages of 400 V/3~/50...60 Hz, 400 V/2~/50...60 Hz and 230 V/3~/50...60 Hz. The option CVI is connected according to the fol lowing wiring diagram.
F1 6.3 AT
L1FUNL1SWNSW
SWITCH
MAIN SUPPLYMODULE B
PEP1NP
X6
X1
PEPESC2SC1NL1
X2
L1 L2 L3
K1
AT4
ext.
SC1
SC2
J
XE2
F7
6.3 AT
Q5
L1 L1 L2 L3 N PE
XE1
F5
N PE
L1 L2 L3
400 V/3~/50..60 Hz 230 V/3~/50..60 Hz
Q5
F5
L1 L2
400 V/2~/50..60 Hz
PEN
max.
K B3
∆p
B2
L1 N
B1
M
– Option Trafo (mains supply without neutral lead):
For mains voltages of 400 V/3~/50...60 Hz and 400 V/2~/50...60 Hz. The option Trafo is connected according to the following wiring diagram.
F1 6.3 AT
L1FUNL1SWNSW
SWITCH
MAIN SUPPLYMODULE B
PEP1NP
X6
X1
PEPESC2SC1NL1
X2
L1 L2 L3
K1
AT4
ext.
SC1
SC2
Trafo
XE2
J
0 500 480 440 400 0
460
F7/F8 = 6.3 AT
PE
Si
220
L1 L1 L2 L3L3 PE
F7
F8
XE1
Q5
F5
L1 L2 L3
400 V/3~/50..60 Hz
PE
K
max.
B3
∆p
B2
B1
L1 N
Q5
F5
L1 L2
M
400 V/2~/50..60 Hz
PE
57

5.6.4 Inspecting the electrical installation

Check the following points:
Do the supply voltages for heating and control comply with the relevant
voltages given in the wiring diagram?
Is the correct CF Card inserted?
Are the voltage supplies (heating and control voltage) correctly fused?
Are the service switches “Q..” installed in the supply lines for to the
heating and control voltage?
Are all components correctly connected according to the wiring diagram?
Are all connecting cables fastened?
Are the connecting cables free of tension (passed through cable glands?)
Does the electric installation meet the applicable local regulations for
electric installations?
Is the unit reassembled correctly and the front panel xed with the screw?
58
6 Product specications

6.1 Technical data

Steam capacity in kg/h 5 8 15 23 32 45 46 64 65 90 130
Capacity range in kg/h 1...5 1.6...8 3...15 4,6...23 6,4...32 9...45 9,2...46 12,8...64 13...65 18...90 26...130
Nominal power in kW 3,8 6,0 11,3 17,3 24,0 33,8 2x 17,3 2x 24,0 48,8 2x 33,8 2x 48,8
Number of steam cylinder 1 1 1 1 1 1 2 2 1 2 2
Heating voltage 230V/1~/50..60Hz *
Unit model 522 822
Nominal current in A 16,3 26,1
Steam cylinder type ** 522A 822A
Heating voltage 400V/2~/50..60Hz *
Unit model 524 824
Nominal current in A 9,4 15,0
Steam cylinder type ** 524A 824A
Heating voltage 230V/3~/50..60Hz *
Unit model 532 832 1532 2362 3262 4662 6462
Nominal current in A 9,4 15,1 28,2 43,3 60,2 2x 43,3 2x 60,2
Steam cylinder type ** 532A 832A 1532A 2362A 3262A 2x 2362A 2x 3262A
Heating voltage 400V/3~/50..60Hz *
Unit model 534 834 1534 2364 3264 4564 6464 6564 9064 13064
Nominal current in A 5,4 8,7 16,2 24,9 34,6 48,7 2x 34,6 70,4 2x 48,7 2x 70,4
Steam cylinder type ** 534A 834A 1534A 2364A 3264A 4564A 2x 3264A 6564A 2x 4564A 2x 6564A
Steam cylinder type *** 534A-L 834A-L 1534A-L 2364A-L 3264A-L 4564A-L
Control voltage 230 V/1~/50..60 Hz
Operating conditions
Admissible water pressure 1...10 bar
Water quality Untreated drinking water with a conductivity of 125...1250 µS/cm
Admissible water temperature 1...40 °C
Admissible ambient temperature 1...40 °C
Admissible ambient humidity max. 75 %rH (non-condensing)
Admissible duct air pressure -0.8 kPa...1.5 kPa; overpressure kit (option) up to 10.0 kPa
Type of protection IP21
Conformity CE, VDE, GOST
Dimensions/Weights
Width in mm 388 388 468 468 563 563 966 966 563 966 966
Height in mm 575 575 620 620 640 640 640 640 640 640 640
Depth in mm 255 255 345 345 354 354 354 354 354 354 354
Net weight in kg 12 19 28 62 30 64
Operating weight in kg 17 29 65 116 67 11 6
Water supply connector G 3/4" (male thread)
Water drain connector ø 31 mm (outside diameter)
Steam connector 1xø 22 1xø 35 2x ø 35 4xø 35
Options
Cable gland 1xCG 2xCG 1xCG 2xCG
Overpressure set 1xOPS 2xOPS 1xOPS 2xOPS
Remote operating and fault indication 1xRFI
Steam hose connector with condensate trap 1xCT.. 2xCT.. 4xCT..
Internal control voltage supply 1xS-CVI 1xM-CVI 1xL-CVI
Transformer 400V/230V Trafo
@Link AT4 @Link AT4
Accessories
Filter valve 1x Z261
Nordmann AT4 Remote Terminal RP
Steam distribution pipe 1xDV41-... 1xDV71-... 2xDV71-... 4xDV71-...
Steam distribution system MultiPipe ––– System 1 System 2 System 4
Fan unit 1x
Steam hose / meter DS22
Condensate hose / meter KS10
EcoTherm insulation hose ECT22 (DS22)
Duct humidistat NHD
Room humidistat NHR
Humidity sensor for duct mounting NDC
Humidity sensor for room mounting NRC
* Other heating voltages on request ** Steam cylinder for water conductivity from 125 to 1250 µS/cm (standard version) *** Steam cylinder for low water conductivity from 80 to 125 µS/cm
FAN4 N S D
or
FAN N S W
or
DS80 (FAN4 N...)
or
ECT80 (DS80)
1x
FAN4 N M D
or
FAN N M W
1x
FAN4 N L W
1x or 2x
FAN4 N L W
DS80 (FAN4 N...)
ECT60 (DS35)
ECT80 (DS80)
2x 3264A-L --- 2x 4564A-L ---
2x
FAN4 N L W
DS35
or
or
4x
FAN4 N L W
59

6.2 Unit dimensions

255
Nordmann AT4 5../8.. (Dimensions in mm)
13
115
26
164
124
388
13
230 150
204
42
13
575
60
29
31
30
16
G 3/4”
40
50
430
150 40
60
Nordmann AT4 15../23.. (Dimensions in mm)
13
115
26
209
155
255
345
13
620
60
468
310 150
16
31
G 3/4”
50
430
205
210 50
42
13
29
30
40
61
191
26
Nordmann AT4 32../4564/6564 (Dimensions in mm)
13
115
142
190
238
255
354
13
563
365 190
205
260 52.5
510
640
16
50
60
31 G 3/4”
62
42
13
29
30
40
Nordmann AT4 4662/6462/6464/9064/13064 (Dimensions in mm)
13
115 23
354
13
191
26
640
142
190
238
365 365220
118
142
190
238
966
560
16
60
31 G 3/4” 31G 3/4”
52 52
203
258258 363 43.5
42
13
29
30
40
40
30
325
42
29
13
63
Notes
64
Notes
65
Notes
© Nordmann Engineering Ltd., Printed in Switzerland
Technical modifications reserved
Reg.No. 40002-2
Manufacturer: Nordmann Engineering Ltd. www.nordmann-engineering.com, info@nordmann-engineering.com
NORDMANN
ENGINEERING
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