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OptiSorp
Steam distribution system
TECHNICAL DOCUMENTATION
1115766 EN 0806
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Contents
1 Notes on steam distribution system OptiSorp 4
1.1 OptiSorp – Steam distribution system for very short humidification distance 4
1.2 Positioning of the steam distribution system 4
1.3 Determination of steam absorption distance 4
1.4 Installation 5
1.5 Putting into operation 5
1.6 Maintenance 5
2 Notes for the planning engineer 6
2.1 Layout 6
2.2 Dimension diagrams 6
2.3 Power selection diagram OptiSorp Systems 1...4 7
2.4 Type key 7
2.5 Determination of the humidification distance “BN” 8
2.6 Planning data OptiSorp steam distribution system (for faxing!) 8
3 Mounting 9
3.1 Safety 9
3.2 Delivery 9
3.3 Mounting positions 9
3.4 Mounting the premounted OptiSorp system 10
3.5 Mounting the different parts of the OptiSorp system 11
3.6 OptiSorp Support (accessory) 12
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1 Notes on steam distribution system OptiSorp
1.1 OptiSorp – Steam distribution system for very short humidification distance
The OptiSorp is made from stainless steel and high-grade plastic components. It is designed for connection to the Walter Meier steam humidifiers. The OptiSorp steam distribution system is installed
directly in the air duct or in an air-handling unit. It comprises horizontal collector pipes and several
vertical pipes provided with steam nozzles. The OptiSorp separates the condensate from the inlet
steam and feeds this uniformly and drip-free to the air flow. In particular the steam absorption distance is considerably less compared with conventional steam distribution pipes.
Note: To ensure a safe support of the collector pipes we recommend the use of the specially designed support for the steam distribution system OptiSorp. The entire support is made from stainless
steel and available in four different mounting sets for duct heights ranging from 450 to 3200 mm
(see table in chapter 3.6). The mounting sets comprise all necessary parts for the correct support
of a OptiSorp system.
1.2 Positioning of the steam distribution system
The positioning of the steam distribution system should be determined when laying out the aircon-ditioning system. The following points should be observed to en-sure correct humidification of
the air. The conditions must be maintained exactly to ensure that the OptiSorp system satisfies the
high demands made of it. A layout based on incorrect data, an unfavourable installation position or
wrong installation can result in excessive humidity with separation of condensate and therefore to
damage from water. The air duct must therefore be sealed in the area of the absorption distance
and provided with a water drainage tray with outlet. The system is preferably fitted immediately following the air heater (and before the cooling coils). Other installation situations require additional
care. A viewing port immediately following the system is highly recommended for installation and
inspection of operation of the installation. Installation of the system is always made laterally to the
air flow. With vertical air flow the nozzle tubes are fitted at an angle of 20° to 30° to enable the
condensate to flow away easily.
With exception of determination of the steam absorption distance, the same basic rules apply to
the OptiSorp steam distribution system as to the standard steam distributor pipes (see technical
documentation of the humidifier).
1.3 Determination of steam absorption distance
Determination of the absorption distance “BN” depends on various factors. For simple determination
of the absorption distance “BN” the table can be used. The nominal values obtained from the table
refer to an air inlet temperature of 10 °C to 30 °C. The length of the steam absorption distance can
be calculated more accurately with the OptiSorp software program. The result must be compared
with the actual steam absorption distance or with the minimum spacings to be observed.
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1.4 Installation
Before installation check that the correct OptiSorp system is used and that the system is in accordance with the type and steam output on the specification label.
The OptiSorp is suitable for installation in air ducts or air-conditioning units. For this purpose the templates supplied are attached to the ventilation duct spaced according to the collectors. The duct plate
is cut out round. The connection side of the pre-fitted system is inserted from inside through these
holes. The connector pieces are then fitted on the pipes from outside and screwed to the duct wall.
The collector pipes should be aligned horizontally and secured at the end on the duct wall.
For large systems or in special cases, where this type of installation is not possible, the collector
pipes can be fitted individually from outside. The nozzle tubes are then inserted in the collectors in
the air duct and secured with the pipe clamps and O-rings. Suitable pliers are required for the installation. All parts are supplied loose for this case if required.
The steam and condensate hoses should then be installed according to the instructions in the technical tem. It is advisable to drain the condensate separately and not return it to the humidifier owing
to the increased volume.
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1.5 Putting into operation
When connected to several basic units these should be operated in parallel. Otherwise condensate
runs into the units switched off and fills these until overflow occurs. Problems can then arise when
switching on again.
The following should be ensured when putting into operation:
1. that the system pressure don’t increase over 1500 Pa. The system pressure is componed of the
airduct static pressure, the pressure drop over the OptiSorp system (typical 500 Pa) and the back
pressure in the steam hose (typical 100 Pa/m)
2. that no water splashes from the steam distribution system and the condensate runs out of the
system satisfactorily. Condensating formation may be caused by:
• Steam supply pipe not properly drained
• Metallic steam pipe inadequately insulated
• Overstressed steam generator feeds water through steam pipe
• System condensate drain is blocked
• Extreme back-pressure in condensate hose
• Incorrect installation of condensate hose
1.6 Maintenance
• Visual inspection
• Further details according to the technical documentation of the humidifier
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B
2 Notes for the planning engineer
2.1 Layout
The choice of the OptiSorp steam distribution system can be made with the software programme
or from the layout tables. The system is determined by the number of steam connections of the
steam humidifier. This also determines the maximum steam output. The maximum possible collector
lengths and collector spacing is selected depending on the duct width and height.
2.2 Dimension diagrams
Systems 1...3
System 4
92 A
Ø 45.0 &
Ø 42,5
OptiSorp System 1&2
OptiSorp System 3
92 A
Ø 60.3
D1
D1
L
D1 D1 D1 D1 60
Ø 30
B
L
D1 D1 D1 D1 60
D2D2
H
OptiSorp System 4
Ø 45.0 &
Ø 42,5
Ø 60.3
Ø 30
D2D2 120
H
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2.3 Power selection diagram OptiSorp Systems 1...4
B
H
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System 1
System 2
System 3
System 4
2.4 Type key
X / XXX / XXX / XXX
No. OptiSorp system
Collector length “L” in [mm]
Collector distance “D2” in [mm]
Steam capacity “mD” in [kg/h]
L mm 350 500 650 800 1000 1200 1500 1800 2000 2300 2500
B min. mm 450 600 750 900 1100 1300 1600 1900 2200 2500 2700
mD max. kg/h 30 45
D2 mm 350 500 650 800 1000 1200 1500
H min. mm 450 600 800 950 1150 1350 1650
mD max. kg/h 60 90
D2 mm 350 500 650 800 1000 1200 1500 1800 2000
H min. mm 450 600 800 950 1150 1350 1650 1950 2200
mD max. kg/h 90 135
D2 mm 325 400 500 600 750 900 1050 1200 1350 1500
H min. mm 800 950 1150 1350 1650 1950 2300 2600 2900 3200
mD max. kg/h 120 180
D2 mm 300 375 475 575 725 875 1050 1200 1350 1500
H min. mm 800 950 1150 1350 1650 1950 2300 2600 2900 3200
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2.5 Determination of the humidification distance “BN”
Entering humidity
ϕ 1 in % r.H.
40 50 60 70 80 90
5 0.22 m 0.28 m 0.36 m 0.48 m 0.66 m 1.08 m
10 0.20 m 0.26 m 0.34 m 0.45 m 0.64 m 1.04 m
20 0.16 m 0.22 m 0.30 m 0.41 m 0.58 m 0.96 m
30 0.10 m 0.17 m 0.25 m 0.36 m 0.52 m 0.88 m
40 0.11 m 0.20 m 0.30 m 0.45 m 0.79 m
50 0.13 m 0.24 m 0.38 m 0.69 m
60 0.16 m 0.30 m 0.58 m
70 0.20 m 0.45 m
The length of the absorption distance BN in m
is for ducts with <600 mm about 50% longer
Leaving humidity
ϕ 2 in % r.H.
2.6 Planning data OptiSorp steam distribution system (for faxing!)
Layout data required Installation 1 Installation 2 Installation 3 Installation 4
Clear height of air duct “B” (without insulation)
1.
Clear width of air duct “H” (without insulation)
2.
Wall thickness of air duct “A” (without insulation)
3.
Air volume per hour or
4.
Air speed
5.
Air duct static pressure
6.
Temperature after humidification
7.
Abs. humidity before humidification
8.
Humidity increase (∆x) or
9.
Rel. humidity after humidification
10.
Humidifier capacity
11.
Steam humidifier selected
12.
Number of steam connections
13.
Following air-cond. components
14.
Existing humidification distance
15.
OptiSorp System selected Type
– Collector length (L)
– Collector spacing (D2)
– Steam output at 500 Pa (mD)
Order No.
mm
mm
mm
m3/h
m/s
Pa
°C
g/kg
g/kg
%
kg/h
Types
pcs.
type
m
mm
mm
kg/h
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3 Mounting
20°
1x
+70°
–70°
3.1 Safety
The OptiSorp steam distribution system must only be installed by adequately qualified personnel.
Observe and comply with all safety instructions in the Technical Documentation of the steam
humidifier.
3.2 Delivery
The OptiSorp steam distribution system will be delivered either premounted or as single components.
Observe the corresponding mounting instructions.
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3.3 Mounting positions
The OptiSorp steam distribution system can be installed in horizontal or vertical ducts. When
mounting in a vertical duct the nozzle pipes must have a minimum declination of 20° and the end
pieces of the collector pipes must be turned, so that the vertical condensate connection directs
straight downwards (see figure below).
Note: Before mounting the OptiSorp system check the type designation and steam capacity on the
data plate to ensure that the correct OptiSorp system is installed in the right place.
In addition to this installation instructions please observe and comply with the instructions regarding
the steam installation (positioning, max. length of steam pipe, etc.) in the Technical Documentation
of the steam humidifier.
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1
5
6
M8
M8
7
4
ø3.6 mm
81-...
81-...
61-...
41-...
43 mm
61 mm
61-... / 41-...
2 3
3.4 Mounting the premounted OptiSorp system
ø64 mm
ø3.6 mm
2°2°
1. Remove the protection covers.
2. Measure the distance of the collector pipes and affix the installation template on the duct wall at
the designed place with this distance (permissible variation ±3 mm) and cut out the openings.
3. From inside of duct, insert the collector pipes through the prepared openings.
4. Slip from the outside flange, O-ring and steam hose connections onto the tube and fix them by the
four screws. Pay attention that the condensate drains are below the steam hose connection.
5. Starting with the lowest collector pipe fix the steam hose connections with the 4 screws at the
duct wall.
6. Align the collector pipes with a down-slope of 2° against the steam connector. Then, fasten the
pipe ends on the duct using M8 threaded rod or the specially designed support available as accessory (see mounting drawing in chapter 3.6).
7. Connect the steam hose and the condensate hose to each collector pipe according to the instruc-
tions in the Technical Documentation of the humidifier.
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3.5 Mounting the different parts of the OptiSorp system
ø3.6 mm
81-...
81-...
61-...
41-...
43 mm
61 mm
61-... / 41-...
4
5 6
M8
M8
7
2 31
ø64 mm
ø3.6 mm
2° 2°
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1. Remove the protection covers.
2. Measure the distance of the collector pipes and affix the installation template on the duct wall at
the designed place with this distance (permissible variation ±3 mm) and cut out the openings.
3. From inside of duct, insert the collector pipes through the prepared openings.
4. Slip from the outside flange, O-ring and steam hose connections onto the tube and fix them by the
four screws. Pay attention that the condensate drains are below the steam hose connection.
5. Starting with the lowest collector pipe fix the steam hose connections with the 4 screws at the
duct wall.
6. Align the collector pipes with a down-slope of 2° against the steam connector. Then, fasten the
pipe ends on the duct using M8 threaded rod or the specially designed support available as accessory (see mounting drawing in chapter 3.6).
7. Connect the steam hose and the condensate hose to each collector pipe according to the instruc-
tions in the Technical Documentation of the humidifier.
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1
1
2
3
3.6 OptiSorp Support (accessory)
Range duct height
[mm]
450...950 1117477 1 x 450 mm 500 4
950...1350 1117478 2 x 450 mm 500 4
1350...2300 1117479 2 x 450 mm 1400 4
2300...3200 1117480 2 x 450 mm 2300 4
Art.-No. Foothold (Pos. 1)
No. x Length [mm]
Rail (Pos. 2)
[mm]
Bracket (Pos. 3)
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Notes
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Notes
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© Walter Meier (Climate International) Ltd. 2007, Printed in Switzerland
Technical modifications reserved
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CONSULTING, SALES AND SERVICE:
Solutions for Indoor Climate
Reg.No. 40002-2
Manufacturer:
Walter Meier (Climate International) Ltd.
Talstr. 35-37, P.O. Box, CH-8808 Pfäffikon (Switzerland)
Phone +41 55 416 61 11, Fax +41 55 416 62 62
www.waltermeier.com, international.climate@waltermeier.com
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