Swegon PARASOL Zenith 1200 User manual

Variant Supply air Performance
Size Air
connection
Pa* l/s m3/h Total cooling
capacity (W)**
Sound level
(dB(A))
1200 Ø160 50 20 72 763 <20
1200 Ø160 50 40 144 1123 22
1200 Ø160 50 60 216 1329 26
1200 Ø160 75 20 72 835 21
1200 Ø160 75 40 144 1243 25
1200 Ø160 75 60 216 1482 28
1800 Ø160 50 20 72 884 <20
1800 Ø160 50 50 180 1463 24
1800 Ø160 50 80 288 1732 31
1800 Ø160 75 20 72 1002 21
1800 Ø160 75 50 180 1613 27
1800 Ø160 75 80 288 1958 34
*Total pressure (Pa)
**Air: ∆Tl=7K / Water: ∆Tmk=8.5K, qk=0.07 l/s, tin=14°C
PARASOL Zenith
Integrated comfort module
QUICK GUIDE
○High performance 4-way distribution comfort module
with cooling, heating and ventilation
○Large span between the lowest and highest air flow
○Few variants serve many needs
○Optimised for low energy consumption
○Manages high air flow at low driving pressure
○Low noise level
○Easy installation on account of low weight, compact
dimensions and optional air connections on short or
long sides
○Stylish design with optional perforation pattern
○Fold-out coil as an optional extra when stringent
cleaning demands are stipulated
○Quick bracket
○Can be integrated in the WISE system with the help of
the factory mounted WISE IORE
Discontinued product/will be replaced by a new version

Content
Advantages with PARASOL Zenith ............................. 3
Technical description .......................................... 4
Comfort module PARASOL Zenith .............................. 4
Range of Application .................................................. 4
Function ..................................................................... 4
Market-based module dimensions............................... 4
Large operation range ................................................ 6
Comfort guarantee ..................................................... 7
Change of layout - Example ........................................ 8
Design ........................................................................ 9
Rooms with elevated hygiene demands .................... 10
Alternative air connections.........................................11
Easily accessible water connections ............................11
Installation - Details.......................................... 12
Suspension ............................................................... 12
Connection sizes....................................................... 13
To connect the air..................................................... 13
Connecting the water ............................................... 13
Technical data.................................................... 14
Recommended limit values........................................ 14
Cooling..................................................................... 15
Heating......................................................................17
Acoustics .................................................................. 19
Accessories ........................................................ 21
Factory-fitted............................................................ 21
Loose items .............................................................. 23
Dimensions and weights.................................. 25
PARASOL Zenith 1200, long-side connection (2 or 4).. 26
PARASOL Zenith 1200, long-side connection (1 or 3) .. 27
PARASOL Zenith 1800, long-side connection (2 or 4).. 28
PARASOL Zenith 1800, long-side connection (1 or 3).. 29
PARASOL Zenith with damper or bend...................... 30
Specification...................................................... 31
Contractor demarcation............................................ 31
Available to order ..................................................... 31
Ordering key - Product ............................................. 32
Specification text .............................................. 33
PARASOL Zenith
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The Installer appreciates
• Low weight – simpler and more ergonomic handling
• Compact dimensions - Can often be installed in exist-
ing roof system, without the need of dismantling this
• Possibility of air connection on the short side - faster
installation with less material usage
• Easily accessible water connections - access with press
coupling tool
• Easier commissioning - Select factory setting k-factor
or adjustment on site
The User appreciates
• Low energy consumption - High capacity at low driving
pressure
• High comfort - Double outlet provides improved
Coanda effect even at low pressure
• 4-way air distribution ensures very good mixing
• ADC air deflector - Change the air flow pattern as
required
• Very low sound levels
Advantages with PARASOL Zenith
The list below shows a few of the benefits enjoyed by the consultant, architect, installer and user
The Consultant appreciates
• Energy efficient product - high cooling capacity at low
driving pressure
• Few variants with large application area – Large span
regarding minimum to largest air flow
• Expanded product range – New: 1800 size
• High comfort irrespective of room placement – Easy
to adapt the supply air rate and direction for optimal
room comfort both initially and in the event of future
changes to the floor plan
• Easy planning through alternative air connections –
select the connect on the short or long side
The Architect appreciates
• Face plate always ”flush”/level with the suspended
ceiling
• Space efficient – Takes up very little ceiling space
• Different perforation to choose from
• Numerous options with different colours
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PARASOL Zenith

Comfort module PARASOL Zenith
Our latest addition to the Parasol family have be developed,
with as few variants as possible, to handle large variations
in the air flow rate, cooling load and heating load. This is
to enable tenant adaptations without the need of making
extensive changes in the system as a whole.
The increased cooling capacity also enables a lower duct
pressure or a higher cooling water temperature can be
used, which saves energy and even improves room com-
fort further.
PARAGON Zenith is available in the following variants:
Variant A: Supply air and waterborne cooling,
(1200 and 1800)
Variant B: Supply air, waterborne cooling and heating
(1200)
Installation: Flush mounting for suspended ceilings
Range of Application
Parasol Zenith is ideal for use as a standard application in
such premises as:
• Offices and conference rooms
• Classrooms
• Hotels
• Restaurants
• Hospitals
• Shops
• Shopping centres
Function
Parasol Zenith is a 4-way air discharge comfort module with
induction function. Exactly as in a climate beam, the supply
air is used to operate the cooling and heating function of a
central air handling unit and therefore does not include an
integrated fan or other moving parts. This gives very quiet
operation and minimal maintenance requirements. Unlike
a 2-way air discharge climate beam, air distribution to the
room occurs from all 4 sides of the unit, which means as
large areas of the ceiling as possible are used to spread the
air, thus ensuring comfort in the occupied zone.
Technical description
Figure 3. Variant B: Heating and supply air function (Heating only
1200 module and also including cooling function)
1 = Primary air
2 = Induced room air
3 = Primary air mixed with heated room air
Figure 2. Variant A: Cooling and supply air function
1 = Primary air
2 = Induced room air
3 = Primary air mixed with chilled room air
Figure 1. Product image (PARASOL Zenith 1200)
Market-based module dimensions
The order range includes module dimensions to fit the
standardised ceiling measurement c-c 600, 625 and 675
mm. In addition, there is a mounting frame for drywall
ceilings and ceiling solutions of the clip-in-type, for exam-
ple, Dampa and FineLine. In order to guarantee a good fit
in T-bar systems, we recommend T sections with a width
of 24 mm.
PARASOL Zenith
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Induction principle
Primary air (A) from the air handling unit provides Zenith
PARASOL with supply air via a supply air duct and builds
up positive pressure in the unit's plenary.
The supply air is forced out at high speed through small
nozzles (B). The high speed means that the surrounding
air is drawn in and mixed with supply air, which gener-
ates negative pressure above the unit’s integrated heat
exchanger (C). Room air (D) is continuously drawn up
from the room through the water-based heat exchanger
where, if necessary, it is cooled or heated before it mixes
with the supply air.
The mixed air is then distributed to the room via aero-
dynamically designed outlets. The outlets are designed
to ensure that the distributed air follows the suspended
ceiling by utilising the so-called Coanda effect (E). The
supplied air is then mixed with additional room air, which
reduces air velocity and lessening the temperature differ-
ence before it reaches the occupied zone.
The proportion of recirculated room air drawn through
the heat exchanger is typically about 3-5 times the pro-
portion of primary air, i.e. if 20 l/s supply air comes from
the air handling unit, then approximately 60-100 l/s room
air will pass through the exchanger and be tempered.
Condensation-free cooling
Parasol Zenith has been developed to work condensation-
free and therefore requires no drainage system or filter.
Normally inlet temperatures between 14-16 °C are used
for the cooling water.
High comfort – today and tomorrow.
A good indoor climate is characterized by good air quality
and the correct room temperature without draughts and
noise. Different requirements are made on air flow, cool-
ing capacity and heating capacity depending on the type
of building in question and how this will be used. If you
are sure that the initial floor plan will never be changed
you do no need to take into account future changes.
However, if it is likely that the floor plan will change, you
need to take this into account at an early stage to mini-
mise the high costs of subsequent retrofitting. No matter
which scenario you imagine, Parasol Zenith gives you the
possibility to find the right solution.
EE
C
A
D
B
B
Figure 4. Induction principle in Parasol Zenith
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PARASOL Zenith

In order to clarify the large work area of Parasol Ze-
nith we can compare the curves for cooling capac-
ity/air flow with the cooling requirements for five
different types of rooms:
A Individual office room (1 person)
B Office for customer visits (3 people)
C Conference room (4 people)
D Conference room (6 people)
E Conference room (8 people)
The individual office and the office for customer visits are
assumed to be placed at the façade, while the conference
room is assumed to be placed on the floor’s inner zone.
In diagram 1, we can clearly see that the same product
can handle all types of rooms. All that is required is that
the nozzle strips are adjusted to open or close the nozzles
as needed.
You can also see that the products give a higher cooling
capacity than the demand. This allows several options:
• Use the full capacity to quickly correct the deviations in
room temperature
• Lower the driving pressure in the supply air duct and
save fan energy
• Increase the supply flow temperature of the cooling
water and save energy (chiller)
0
100
200
300
400
500
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
2100
2200
0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105
(W)
(l/s)
PARASOL Zenith 1800 PARASOL Zenith 1200
25dB(A)
30dB(A)
35dB(A)
A
B
C
D
E
Total cooling capacity
Air flow
Diagram 1. Parasol Zenith capacity range
(Total pressure drop 75Pa)
Large operation range
The work area related to the smallest to the largest air
flow in one and the same product is very large for Para-
sol Zenith. In practice this means that one and the same
product can handle a variety of room types, by being
adjusted as required. The large work area is made pos-
sible by Parasol Zenith being equipped with dual nozzle
rows and thus more available nozzles. This also gives the
following advantages:
• Individually adjustable air flow on all four sides of the
unit
o Move the air where you want
• Possible to maintain the same k-factor in different
distribution patterns
o No need to readjust the damper
• Nozzle setting of the k-factor (small step)
• Fewer variants
o One Parasol Zenith serves many needs
Prerequisites:
Supply air: ∆Pl= 75 Pa; ∆Tl=7K
Cooling water: tin= 14°C; tout=17°C
Room: troom = 24°C
AIndividual office room, 1 person
12 m2
15 l/s
500-800 W cooling load
BOffice for customer visits, 3 people
12 m2
30 l/s
700-1000 W cooling load
CConference room, 4 people
8 m2
40 l/s
700-850 W cooling load
DConference room, 6 people
10 m2
60 l/s
900-1150 W cooling load
EConference room, 8 people
12 m2
80 l/s
1150-1500 W cooling load
PARASOL Zenith
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Comfort guarantee
As previously described, Parasol Zenith has 4-way air
distribution, which gives low air velocities in the occupied
zone. Distributing the cooled air over a large ceiling area
creates the low air velocity. The comfort module’s closed
design with a circulation opening for return air in the face
plate of the module also contributes to its advantageous
mixing performance.
With its dual nozzle rows in combination with the aero-
dynamically designed double outlets PARASOL Zenith dis-
tributes the air with very good adhesion to the suspended
ceiling (Coanda effect) even at low driving pressure. The
duct pressure can then, depending on air flow rate, be
lowered down to 20 Pa. This saves fan energy while the
noise level is kept to an absolute minimum.
Figure 5. Double outlets.
All the comfort modules contain ADC as standard. ADC
stands for Anti Draught Control, which enables you to set
the diffusion pattern of the air being distributed to avoid
risk of draught. A number of ADC sections with nine air
deflectors per section are arranged on each side of the
unit. Each section is adjustable from a straight setting to
40° air deflection to the right or left in increments of 10°.
This provides great flexibility and can be adjusted without
having to affect the system as a whole. The sound level
and the static pressure are not at all affected by the ADC.
+40˚
-40˚
0˚
Figure 6. Possible settings for the ADC, Fan-shape
40
Figure 7. Possible settings for the ADC, X-shape
Figure 8. Parasol Zenith with examples of different ADC settings
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PARASOL Zenith

Change of layout - Example
Figure 9 shows an example of the floor plan of a build-
ing with offices and a conference room. Assume it is
arranged as illustrated and the that the highlighted rooms
were originally used as a group rooms or small conference
rooms. New demands on the premises in the form of
alternative usage or other activities may mean that some
of the rooms need to be partitioned off as in figure 10,
for example, to create small individual offices. Adjustable
air flow through adjustable nozzles, high k-factor range,
air deflectors ADC and 4-way air distribution mean that
no new installations are needed, but the same products
can be used with other settings.
The large working area permits great opportunities to
control the air flow rate individually on all four sides of
the Parasol Zenith. At 80 Pa total pressure, a 1200-size
can supplying anywhere from 0 to 11 l/s on one short
side and between 0-34 l/s on one long side (Figure 11).
A 1800-size can supplying anywhere from 0 to 11 l/s per
short side and between 0 and a full 42 l/s on one long
side (Figure 12).
Figure 9.
Figure 10.
The direction and rate of the air flow can be easily opti-
mised using the Swegon ProSelect sizing program avail-
able at www.swegon.com. You can then easily export
CAD models with the current settings from ProSelect to
MagiCAD or other CAD programs.
80 Pa
1200
Min 0 l/s
Max 34 l/s
Min 0 l/s
Max 11 l/s
Figure 11. Adjustable air flow per side - 1200 size at 80 Pa total
pressure.
80 Pa
1800
Min 0 l/s
Max 42 l/s
Min 0 l/s
Max 11 l/s
Figure 12. Adjustable air flow per side - 1800 size at 80 Pa total
pressure.
PARASOL Zenith
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Figure 13. Standard face plate Circular holes arranged in a square
pattern
Figure 14. PD face plate Circular holes arranged in a square pat-
tern with a graduated border
Figure 15. PE face plate Square holes arranged in a square pat-
tern with a graduated border
Figure 16. PX face plate Circular holes arranged in a square pat-
tern - field perforated rectangular paths.
Design
The face plate of the Parasol Zenith is always “flush”, i.e.
always in line with the suspended ceiling which gives a
stylish and discreet installation. The double outlets means
that there is no need to lower the face plate for high air
flow rates, maximum capacity (induction) is still achieved.
The face plate on PARASOL Zenith is available with four
different perforation patterns that make it easily adapta-
ble to suit different types of ceiling components, e.g. light
fittings and axtract air diffusers that share the surface
of a suspended ceiling. A suspended ceiling containing
different types of perforation patterns can otherwise be
experienced as disturbing to the eye. As standard, the
face plate has round perforations arranged in a square
pattern. Other patterns are of course available on special
order. For further details, get in touch with your nearest
Swegon representative.
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PARASOL Zenith

Easy installation
PARASOL Zenith is built on a platform with very compact
dimensions. In many cases the design permits installation
in the existing T-bar system without the need of disman-
tling, provided that there is at least 300 mm of space
between the suspended ceiling and the joists.
The slim design and lightweight result in simpler handling,
especially when handling the products on the site, which
gives less handling damage and a better working environ-
ment. Parasol Zenith’s compact units fit most common
modular dimensions and fit most suspended ceiling
system on the market.
As standard the units include four mounting brackets.
These are adjustable +/- 20 mm in both directions and in
doing so create the adjustment range normally required
during installation.
Figure 17. Installation in existing T-bar system
Rooms with elevated hygiene demands
PARASOL Zenith is available as a variant with a fold-out
coil for easy access to the complete heat exchanger.
A dust-free environment is especially important in rooms
with elevated hygiene demands.
Over time large amounts of room air pass through Parasol
Zenith’s coil (heat exchanger). Dust particles, which fasten
on the coil, not only result in less capacity, but also fail to
comply with the hygiene requirements that apply to the
room.
Parasol Zentih has, as an option, the possibility of fold-out
coils to meet these requirements.
In addition to normal cleaning, by wiping off dust from
the white painted surfaces exactly as you clean other sur-
faces in the room, the option of more thorough cleaning
is now possible.
1. It is recommended to vacuum clean the coil several
times a year. More frequently in a room with a lot of
textiles and a high rate of air change. The face plate
is opened or dismantled to gain access to the coil, see
figure 18.
2. In environments with elevated hygiene demands
additional cleaning of the comfort module may be
a requirement. The use of flexible connection hoses
and the possibility to fold out the coil permits clea-
ning of the top of the coil in these instances, see
figure 19.
Figure 18. Removing the face plate to access the coil
Figure 19. Removing the face plate and folding out the coil for
accurate cleaning in the event of high hygiene requirements.
Note! requires the product to be ordered with the accessory, fold-
out coil, and that flexible connection hoses are used on the water
side.
PARASOL Zenith
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24
1
3
1200 1800
Alternative air connections
To simplify the duct installation and reduce the number
of duct bends gives several advantages. Installation time
is shorter and the cost of materials decreases while the
pressure drop and noise generation are also reduced.
Therefore, Parasol Zenith is equipped with alternative
air connections (Figure 23). You can choose between
the air connection on either the long side or the brand
new option to connect on any short side. Installations
frequently appear as in figure 20. Straight ducts are of
course always preferable.
Figure 20. Installation example.
Straight air connection, alternative with 90° bend.
Alternative air connections
The air connection on the short side (1 and 3)
Air connections on the long side (2 and 4)
Figure 21. Air connection on the product's short side
Figure 22. Air connection on the product's long side.
Figure 23. Alternative air connections
Easily accessible water connections
The water pipes are very easily accessible, which facilitates
connection, particularly if e.g. press couplings and associ-
ated tools are used.
This saves installation time and simplifies a safe water
connection.
The pipes are placed in a standardised fashion, which
means irrespective of product the cooling and possibly
heating pipes are always positioned in the same way,
which facilitates installation Figure 24. Parasol Zenith with short-side connection and long side
connection. Irrespective of the connection, the water connection
is placed in the same easily accessible position.
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PARASOL Zenith

Installation - Details
Suspension
PARASOL Zenith has four mounting brackets for suspen-
sion and are installed using one threaded drop rod in each
mounting bracket (Figure 26. A double threaded rod with
a thread lock should be used if there is substantial dis-
tance between the overhead slab and the unit. A 200 mm
threaded drop rod is used for surface mounting. Threaded
drop rods and assembly fitting SYST MS M8 (Figure 25)
are ordered separately.
For installation in an existing T-bar system, the product is
stabilised by the T-bar system and in this case it is sufficient
to suspend the product from two brackets (diagonal).
Quick bracket
There is now also the PARASOL Z QUICK SUSPENSION
KIT, consisting of 2 fixed brackets to suspend Parasol
Zenith.
The fixed brackets are fastened to the ceiling, after which
the product can be pushed into place without the use of
tools. The brackets also feature an integrated fine adjust-
ment of approx. 50 mm in height. (Figure 27).
Centring kit
The kit consists of 6 centring rails that can be used to
centre the product in specific suspended ceiling systems.
(Figure 28)
Figure 25. Assembly piece SYST MS M8-1, ceiling mount and
threaded rod
Figure 26. Suspension in four brackets with SYST MS M8
Figure 27. Suspension with quick brackets, PARASOL Z QUICK
SUSPENSION KIT
50mm
Figure 28. Centring kit
SYST CENTRINGKIT PARASOL
PARASOL Zenith
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Figure 29. Alternative air connections
Position 1 and 3 = Short side connection
Position 2 and 4 = Long side connection
1
3
2 4
Connection sizes
Water – cooling* plain pipe ends Cu Ø 12 x 1.0 mm
Water – heating* plain pipe ends Cu Ø 12 x 1.0 mm
*Alternatively, external threads DN ½" (applies to factory-fitted
valves)
Air connection sleeve Ø 125 or Ø 160 mm
To connect the air
The air connection sleeve is supplied mounted on the side
of the product you choose, (Figure 29).
For selection of the short side connection: Position 1 or 3
For selection of the long side connection: Position 2 or 4
The alternative connection on the opposite side is then
closed with a tightly fitting cover. The sleeve can be
removed if necessary and switched with the cover if at a
late stage you choose to connect on the opposite page.
Connecting the water
Connect the water pipes using push-on, compression ring
or press couplings. Note that compression ring couplings
and press couplings require support sleeves inside the
pipes.
Do not use solder couplings to connect the water pipes.
High temperatures can damage the unit’s existing soldered
joints.
Flexible connection hoses for water may be ordered sepa-
rately.
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PARASOL Zenith

Technical data
Recommended limit values
Pressure levels
Coil working pressure, max. 1600 kPa *
Coil test pressure, max. 2400 kPa *
* Applicable without control equipment mounted
Nozzle pressure 20-200 Pa
Recommended lowest nozzle
pressure, cooling Air flow
(l/s)
Nozzle pressure
(pa)
<10 50
10-30 25
>30 20
Recommended lowest nozzle
pressure if coil heat is used. 70 Pa
Water flow
Ensures evacuation of any air pockets in the system.
Cooling water, min. 0.030 l/s
Heating water (1200), min. 0.013 l /s
Temperature differentials
Cooling water, temperature increase 2–5 K
Heating water, drop in temperature 4–10 K
Temperature differences are always expressed in Kelvin (K).
Supply flow temperature
Cooling water **
Heating water, max. 60 ºC
** Cooling water must always be kept at a level that ensures that
no condensation is formed.
PARASOL Zenith
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Table 1 – data – cooling. Sizing Guide for Parasol Zenith at 50 Pa
Unit Nozzle
setting
Air flow Sound
level
Cooling capacity of primary
air at ∆Tl(K)
Cooling capacity, water at ∆Tmk (K) Pressure drop
constant
air
mm l/s m3/h dB(A) 6 8 10 12 6 7 8 9 10 kpl
1200 Ø125 113 48 20 95 126 158 189 *300 356 412 468 524 1,89
230 107 20 214 285 356 428 *451 548 647 749 845 4,54
343 153 28 306 408 510 612 *456 551 647 746 840 7, 20
452 186 33 372 496 620 745 *435 522 610 700 790 9,86
556 203 34 406 541 677 812 *403 485 569 655 741 11,6 8
1200 Ø160 113 48 20 96 128 160 192 *305 362 419 476 533 1,89
231 113 20 226 301 377 452 *483 586 691 798 894 4,54
348 173 23 346 461 576 691 *536 645 756 860 960 7,20
463 226 27 452 603 754 904 *554 663 774 875 974 9,86
572 258 29 516 688 860 1032 *532 636 742 842 937 11,6 8
1800 Ø160 117 60 20 120 159 199 239 *401 490 581 673 767 2,36
2 39 139 21 278 371 463 556 *665 803 931 1059 1189 5,68
358 208 24 417 556 695 834 *742 886 1027 1169 1312 9,00
474 266 29 532 709 887 1064 *795 936 1078 1220 1363 12,32
583 298 31 597 796 995 119 4 *713 854 988 1125 1262 14,60
Table 2 – data – cooling. Sizing Guide for Parasol Zenith at 75 Pa
Unit Nozzle
setting
Air flow Sound
level
Cooling capacity of pri-
mary air at ∆Tl(K)
Cooling capacity, water at ∆Tmk (K) Pressure drop
constant
air
mm l/s m3/h dB(A) 6 8 10 12 6 7 8 9 10 kpl
1200 Ø125 113 48 20 95 126 158 189 *300 356 412 468 524 1,89
230 107 20 214 285 356 428 *451 548 647 749 845 4,54
343 153 28 306 408 510 612 *456 551 647 746 840 7, 20
452 186 33 372 496 620 745 *435 522 610 700 790 9,86
556 203 34 406 541 677 812 *403 485 569 655 741 11,6 8
1200 Ø160 116 59 21 117 156 196 235 *397 475 555 636 718 1,89
238 138 25 276 369 461 553 *604 728 848 961 1075 4,54
359 212 28 423 564 706 847 *672 804 923 1043 1162 7,20
477 277 33 554 738 923 1107 *683 814 933 1051 1170 9,86
588 316 36 632 843 1054 1264 *645 768 880 990 1099 11,68
1800 Ø160 120 73 22 146 195 244 292 *541 662 788 902 1018 2,36
247 170 26 341 454 568 681 *846 999 115 4 1310 1467 5,68
371 255 29 510 681 851 1021 *917 1088 1262 1437 1613 9,00
490 326 36 652 869 1086 1303 ** 886 1067 1233 1400 1569 12,32
5102 366 38 732 975 1219 1463 ** 805 975 1138 1294 1452 14,60
Cooling
* Locked ∆T 3°C on the water side. Temperature inlet flow +14°C, return flow +17°C.
** Locked ∆T 4°C on the water side. Temperature inlet flow +14°C, return flow +18°C.
The specified sound level applies to straight connection without damper or with fully open damper. Room attenuation
= 4 dB
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PARASOL Zenith

Table 4. Cooling capacity for natural convection
Unit (mm) Cooling capacity (W) for temperature difference, room - water ∆Tmk (K)
678910 11 12
PARASOL Zenith 1200 69 83 97 111 125 141 155
PARASOL Zenith 1800 89 106 123 143 160 179 199
Table 3 – Data – Cooling. Sizing Guide for Parasol Zenith at 100 Pa
Unit Nozzle
setting
Air flow Sound
level
Cooling capacity of
primary air at ∆Tl(K)
Cooling capacity, water at ∆Tmk (K) Pressure drop
constant
air
mm l/s m3/h dB(A) 6 8 10 12 6 7 8 9 10 kpl
1200 Ø125 119 67 25 134 179 223 268 *459 553 648 745 837 1,89
242 151 30 302 403 503 604 *657 791 912 1033 115 4 4,54
360 216 39 433 577 721 865 *687 819 941 1063 1185 7, 2
473 264 45 527 703 878 1054 *652 779 895 1009 1122 9,86
580 287 45 575 766 958 1149 *591 705 817 920 1022 11,68
1200 Ø160 119 68 25 135 180 226 271 *464 559 656 754 846 1,89
244 160 28 320 426 533 639 *691 827 952 1078 1205 4,54
368 244 31 489 652 815 978 *771 907 1040 1174 1308 7, 20
489 319 37 639 852 1064 1277 *777 912 1045 1178 1311 9,86
5101 365 41 730 973 1217 1460 *727 855 975 1095 1215 11,6 8
1800 Ø160 123 84 26 168 225 281 337 *644 790 924 1060 1199 2,36
255 197 29 393 524 655 786 * 967 1141 1316 1491 1668 5,68
382 295 33 590 786 983 1179 *1040 1234 1431 1630 1796 9,00
4104 376 41 752 1003 1254 1505 ** 998 1189 1375 1564 1754 12,32
5117 422 43 845 1126 1408 1689 ** 916 1101 1274 1449 1624 14,60
* Locked ∆T 3°C on the water side. Temperature inlet flow +14°C, return flow +17°C.
** Locked ∆T 4°C on the water side. Temperature inlet flow +14°C, return flow +18°C.
The specified sound level applies to straight connection without damper or with fully open damper. Room attenuation
= 4 dB
Reported cooling capacities apply at a water flow of 0.063 l/s.
Tabell 5. Pressure drop constant - water, Kpk
Unit (mm)
Function
A2 B2
kpk cooling* kpk cooling*
PARASOL Zenith 1200 0,0161 0,0186
PARASOL Zenith 1800 0,0133 -
A2 = Cooling and supply air, serial connected double row coil
B2 = Cooling, heating and supply air, serial connected double row coil
*Kpk-values for the water flow 0.05l/s.
PARASOL Zenith
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Heating
Heating function
As the comfort module is able to quickly mix the primary
air with room the air, PARASOL Zenith is ideal to manage
both cooling and heating. Heating spaces with air heated
above room temperature discharged from the ceiling is a
good alternative to conventional radiator heating solu-
tions. The benefits achieved include lower installation
costs, simpler installation and perimeter walls free from
piping and radiators.
Regardless of the type of heating system installed it is
important to consider the operative temperature in a
room. Most people are comfortable when the operative
temperature in winter is in between 20–24°C, and the
optimal comfort requirements are normally met when the
room temperature is 22°C. This means that for a room
with a cold perimeter wall, the air temperature must be
higher than 22°C to compensate for the chilling effect of
the wall. In new buildings with normal insulated perim-
eter walls and normal standards of window glazing, the
difference between the room air temperature and the
operative temperature is small. But for older buildings
with worse windows, it may be necessary to raise the air
temperature to compensate for the chilling effect. Dif-
ferent operating scenarios can be simulated easily using
the Swegon ESBO software to calculate the heat balance
where both the room air temperature and operative tem-
perature are specified.
Supplying heated air from the ceiling results in some
stratification of the air. With a maximum supply flow
temperature of 40°C, the stratification is non-existent,
while at 60°C it can be around 4 K in the occupied zone.
This only applies during the warming-up phase, when the
room is unused and there is no internal load. When the
room is being used and lighting, computers and people
are present, the stratification is reduced or disappears
depending on the heating load.
Laboratory studies, computer simulations and refer-
ence projects all show that a good indoor climate will
be achieved by means of the PARASOL Zenith comfort
module whatever the time of year.
Table 6 – data – heating. Sizing Guide for Parasol Zenith at 50 Pa
Unit Nozzle
setting
Air flow Sound
level
Heating capacity, water at ∆Tmv (K) Pressure drop
constant
air
mm l/s m3/h dB(A) 10 15 20 25 30 35 kpl
1200 Ø125 113 48 20 252* 431* 491 663 841 1024 1,89
230 107 20 378* 511 759 1021 1347 1597 4,54
343 153 28 394* 541 809 1095 1436 1709 7, 20
452 186 33 379* 522 783 1062 1401 1669 9,86
556 203 34 343* 468 703 954 1280 1522 11,6 8
1200 Ø160 113 48 20 256* 437* 499 673 853 1048 1,89
231 113 20 398* 540 801 1077 1410 1671 4,54
348 173 23 437* 602 897 1211 1564 1861 7,20
463 226 27 445* 616 918 1241 1597 1901 9,86
572 258 29 428* 587 874 1178 1526 1814 11,6 8
Locked ∆T 10°C on the water side. Temperature room +20°C
* Locked ∆T 5°C on the water side.
The specified sound level applies to straight connection without damper or with fully open damper. Room attenuation
= 4 dB
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20180420 Swegon reserves the right to alter specications.
PARASOL Zenith

Table 7 – data – heating. Sizing Guide for Parasol Zenith at 75 Pa
Unit Nozzle
setting
Air flow Sound
level
Heating capacity, water at ∆Tmv (K) Pressure drop
constant
air
mm l/s m3/h dB(A) 10 15 20 25 30 35 kpl
1200 Ø125 116 58 21 324* 432 642 863 1094 1381 1,89
236 137 26 452* 618 914 1227 1575 1868 4,54
352 188 34 465* 644 957 1290 1650 1963 7, 20
463 228 40 448* 620 925 1250 1607 1913 9,86
569 249 41 414* 569 847 1143 1488 1768 11,68
1200 Ø160 116 59 21 328* 438 650 874 1108 1395 1,89
238 138 25 473* 648 957 1284 1638 1943 4,54
359 212 28 510* 707 1047 1449 1779 2117 7, 20
477 277 33 516* 717 1063 1468 1804 2147 9,86
588 316 36 502* 692 1023 1417 1737 2063 11,68
Locked ∆T 10°C on the water side. Temperature room +20°C
* Locked ∆T 5°C on the water side.
The specified sound level applies to straight connection without damper or with fully open damper. Room attenuation
= 4 dB
Table 8 – data – heating. Sizing Guide for Parasol Zenith at 100 Pa
Unit Nozzle
setting
Air flow Sound
level
Heating capacity, water at ∆Tmv (K) Pressure drop
constant
air
mm l/s m3/h dB(A) 10 15 20 25 30 35 kpl
1200 Ø125 119 67 25 324* 552 753 1011 1334 1580 1,89
242 151 30 506* 696 1026 1419 1738 2063 4,54
360 216 39 518* 719 1064 1468 1803 2145 7, 20
473 264 45 498* 692 1027 1426 1753 2087 9,86
580 287 45 467* 642 952 1281 1637 1945 11,68
1200 Ø160 119 68 25 381* 514 761 1022 1347 1594 1,89
244 160 28 527* 727 1070 1471 1802 2139 4,54
368 244 31 563* 783 1156 1574 1934 2300 7,20
489 319 37 567* 790 1167 1588 1952 2322 9,86
5101 365 41 556* 768 113 0 1540 1888 2241 11, 68
Tabell 9. Pressure drop constant - water, Kpv
Unit (mm)
Function
A2 B2
Kpv heating* Kpv heating*
PARASOL Zenith 1200 -0,0287
PARASOL Zenith 1800 - -
B2 = Cooling, heating and supply air, serial connected double row coil
*Kpv-values for the water flow 0,03l/s.
PARASOL Zenith
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Diagram 2 shows the total generated sound power (L Wtot
dB), as a function of the air flow and pressure drop across
the damper. By correcting LWtot with the correction fac-
tors from Table 13, the sound power level for each octave
band (LW= Lwtot + Kok) can be obtained.
Diagram 2. Commissioning range, CRPc 9-125
damper
Diagram 3. Commissioning range, CRPc 9-160
damper
Diagram 3 shows the total generated sound power (L Wtot
dB), as a function of the air flow and pressure drop across
the damper. By correcting LWtot with the correction fac-
tors from Table 14, the sound power level for each octave
band (LW= Lwtot + Kok) can be obtained.
Acoustics
Initial Commissioning Range
Figure 30. Pressure Conditions - Air
Damper throttling range
∆pl= ps -pi
∆plCommissioning range of fitted damper ps- pi, see
Diagrams 2-3
piNozzle pressure (easily measured with a pressure
gauge connected to measurement hoses).
psStatic pressure upstream of unit and damper
Commissioning range for damper CRPc 9-125/160, in ∆pl
(Pa) and the primary air flow ql(l/s).
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20180420 Swegon reserves the right to alter specications.
PARASOL Zenith

Table 10. Natural attenuation ∆L (dB)
PARASOL Zenith 1200 Ø125
Nozzle
setting
Octave band (Hz)
63 125 250 500 1k 2k 4k 8k
124 18 12 99914 20
223 17 11 88711 18
322 17 11 776916
421 17 11 776915
521 17 11 775714
Table 11. Natural attenuation ∆L (dB)
PARASOL Zenith 1200 Ø160
Table 12. Natural attenuation ∆L (dB)
PARASOL Zenith 1800 Ø160
Natural attenuation and end reflection
Natural attenuation ∆L (dB) including end reflection.
Table 14. Sound power level for damper CRPc 9-160,
Correction factor, Kok
Size
CRPc 9
Mid-frequency (octave band) Hz
63 125 250 500 1k 2k 4k 8k
160 0-2 -12 -16 -18 -21 -26 -36
Tol. + 2 2 2 2 2 2 2 2
Table 13. Sound power level for damper CRPc 9-125,
Correction factor, Kok
Size
CRPc 9
Mid-frequency (octave band) Hz
63 125 250 500 1k 2k 4k 8k
125 0-2 -9 -15 -20 -25 -29 -35
Tol. + 2 2 2 2 2 2 2 2
Nozzle
setting
Octave band (Hz)
63 125 250 500 1k 2k 4k 8k
122 16 11 8 8 10 16 19
220 15 11 76712 17
320 15 11 656915
420 15 11 655915
519 15 9545813
Nozzle
setting
Octave band (Hz)
63 125 250 500 1k 2k 4k 8k
119 15 11 77916 19
219 14 10 66613 17
319 14 10 55511 16
419 14 10 555915
519 14 9554913
PARASOL Zenith
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Swegon reserves the right to alter specications. 20180420