Swegon PARASOL Zenith b Series User manual

Variant Supply air Performance
Size Air
connection:
Pa* l/s m3/h Total cooling
capacity
(W)**
Sound
level
(dB(A))
600 125 75 20 72 493 26
600 125 75 25 90 564 28
600 125 75 30 108 631 30
600 160 75 25 90 566 27
600 160 75 35 126 697 30
600 160 75 45 162 809 33
1200 125 75 25 90 882 26
1200 125 75 35 126 1077 28
1200 125 75 45 162 1218 30
1200 160 75 30 108 900 23
1200 160 75 60 216 1375 28
1200 160 75 80 288 1591 34
1800
1800
1800
*Total pressure duct (Pa)
**Air: ∆Tl=7K / Water: ∆Tmk=8.5K, twater=14/17°C
PARASOL Zenith b
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 for easier sizing and variable air flow
control
○Optimised for low energy consumption
○Manages high air flow at low driving pressure
○Easy installation on account of low weight, compact
dimensions and optional air connections on short or
long sides
○Stylish design with optional perforation pattern
○Hygiene design as an option for hospital applications
○Quick bracket for time saving installation
○Can be integrated in the WISE-system
○Upgradable from CAV to VAV

Contents
Advantages with PARASOL Zenith ............................. 3
Technical description .......................................... 4
Comfort module PARASOL Zenith .............................. 4
Range of Application .................................................. 4
Market-based module dimensions............................... 4
Function ..................................................................... 5
Control variants ......................................................... 7
Large working range................................................... 8
Comfort guarantee ..................................................... 9
Design ...................................................................... 10
Hygienic design .........................................................11
Alternative air connections........................................ 12
Easily accessible water connections ........................... 12
Installation - Details.......................................... 13
Suspension ............................................................... 13
Connection sizes....................................................... 14
Connections ............................................................. 14
Technical data.................................................... 15
Recommended limit values........................................ 15
Cooling..................................................................... 16
Heating......................................................................17
K-factor setting......................................................... 19
Selectable control variants and its accessories21
Factory mounted accessories for integration in
the WISE system ....................................................... 22
Control equipment LUNA.......................................... 23
Factory-fitted accessories for LUNA control equipment 23
Loose accessories...................................................... 24
Loose accessories conti. ............................................ 25
Complete kit for upgrade to the WISE system ........... 26
Dimensions and weight.................................... 27
PARASOL Zenith 600, short side connection (or 1) .... 28
PARASOL Zenith 1200, long-side connection (2 or 4) 29
PARASOL Zenith 1200, short side connection (1)....... 30
PARASOL Zenith with bend....................................... 31
Specification...................................................... 32
Contractor demarcation............................................ 32
Available to order ..................................................... 32
Ordering key - Product ............................................. 33
Specification text .............................................. 34
PARASOL Zenith b is launched in two steps as set out below
Size
Step 1 (W10) Step 2 (W17)
Variant Variant
Cooling Cooling /
heating
Cooling Cooling /
heating
600 
1200  
1800    
For size 1800 we recommend PARASOL Zenith a until variant b is
launched in week 17.
PARASOL Zenith b
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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
• Available in three sizes 600, 1200 and 1800
• High comfort irrespective of room placement – Easy to
adapt to the direction for optimal room comfort both
initially and in the event of future changes to the floor
plan
• Easy planning through alternative air connections –
choose short or long side connection
• Variable air flow control minimises variants and simplifies
selection
The Architect appreciates
• Face plate always at the same level as the suspended
ceiling, irrespective of operating mode
• Space efficient – takes up very little ceiling space
• Different perforation designs to choose from
• Numerous options with different colours
The Installer appreciates
• Lowest weight on the market – simpler and more
ergonomic handling
• Compact dimensions - can often be installed in existing
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
• Stock products - pressed for time? Quick deliveries and
easy k-factor setting with the help of a single knob
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 for each side
• Low sound levels
Advantages with PARASOL Zenith
The list below shows a few of the benefits enjoyed by the consultant, architect, installer and user
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PARASOL Zenith b

Comfort module PARASOL Zenith
The new generation of Parasol Zenith features variable air
flow control, which makes selection easier, fewer variants
and simplified logistics on site in addition to greater
flexibility and simplicity in terms of future rebuilding work
and customisation.
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
comfort further.
PARAGON Zenith is available in the following variants:
Variant A: Supply air and waterborne cooling,
(600, 1200 and 1800*)
Variant B: Supply air, waterborne cooling and heating
(600*, 1200 and 1800*)
*Launched in week 17.
Installation: Flush mounting for suspended ceilings
Technical description
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
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
example, Dampa and FineLine. In order to guarantee a
good fit in T-bar systems, we recommend T sections with
a width of 24 mm.
The product will be available in ProSelect in the future
as it is currently undergoing Eurovent certification. Here
you can easily order the required Parasol Zenith variant,
factory-set with exactly the right k-factor and with the
control equipment and accessories fitted on delivery.
PARASOL Zenith b
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Figure 3. Variant B: Heating and supply air 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
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 heat-
ing 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.
Parasol Zenith has variable k-factor setting and large air
flow range. The product is available both as a CAV
product with fixed k-factor and is easy to upgrade to a
VAV function with the help of different accessories. It is
also possible to order as a VAV variant from the factory
fitted with control or actuator for air flow control (0-10 V)
(see Parasol Zenith VAV b)
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PARASOL Zenith b

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
slots (B). The high speed means that the surrounding air is
drawn in and mixed with supply air, which generates
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
further lowers the air velocity and lessening the temperature
difference 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.
Figure 4. Induction principle in Parasol Zenith
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.
As greater demands are made on being able to offer
customised office solutions and to easily change the floor
layout for new or existing tenants if changed needs arise,
it is important to take this into consideration as early as
the design phase. As this will minimise future costs for
rebuilding. Regardless of the scenario, new Parasol Zenith
gives - through its simplicity in terms of air flow range,
operation and commissioning - all the possibilities to find
this flexible and optimal solution.
E
C
A
D
E
D
BB
E
PARASOL Zenith b
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Figure 5. WISE Parasol Zenith.
Figure 6. PARASOL Zenith VAV. (Launched week 17)
Control variants
Parasol Zenith provides unique advantages with its slot
control and through this a large working range on the air
side.
Parasol Zenith is designed to handle a large air flow range
in one and the same product. This gives benefits such as
easy sizing and a straightforward product upgrade path.
In addition to quick and easy adjustment with the help of
a knob on the constant flow product PARASOL Zenith b,
there are two other designs:
WISE Parasol Zenith for the WISE II system
PARASOL Zenith VAV for stand-alone applications
(Launched week 17).
For more information, see the product sheets
WISE Parasol Zenith and Parasol Zenith VAV on
www.swegon.com.
You can also integrate Parasol Zenith as a pure CAV
product (without motorised damper function) in the WISE
system. This is done by choosing a WISE CU as a fitted
accessory. This gives additional flexibility to use wireless
technology and at the same time future-proof the product.
With the help of our upgrade kits the product can sub-
sequently be upgraded with a motor and e.g. face plate
with presence sensor and then turn into a WISE Parasol
Zenith with variable motorised control of the air flow.
Read more about our upgrade kits on page 26.
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PARASOL Zenith b

In order to clarify the large work area of Parasol Zenith
we can compare the curves for cooling capacity/air
flow with the cooling requirements for seven different
types of rooms:
A+B Individual office room (1 person)
C+D Office for customer visits (3 people)
E, F, G, Conference room (4, 6, 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 diagrams 1 and 2, we can see that the product variants
can handle all types of rooms. All that is required is to
adjust the slot openings as required.
You can also see that the products can 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)
Large working range
The work area related to the smallest to the largest air
flow in one and the same product is very large for
Parasol 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
possible by Parasol Zenith being equipped with slots for
versatile and easy air flow adjustment. This also gives the
following advantages:
• Fewer variants through larger air flow range/
k-factor area
• Products with easy k-factor setting on site for quick
start of the build
• Simple commissioning
Prerequisites:
Supply air:
Cooling water
Room:
∆Pl= 75 Pa; ∆Tl=7K
tin= 14°C; tout=17°C
troom = 24°C
0
200
400
600
800
1000
1200
1400
0 10 20 30 40 50 l/s
600 A
1200 B
1200 A
(W)
A
C
D
B
25dB
30dB
25dB
35dB
30dB
E
Diagram 1: Capacity range, Air connection Ø125
0
200
400
600
800
1000
1200
1400
1600
1800
0 20 40 60 80 100 l/s
(W)
600 A
1200 B
1200 A
30dB
25dB
25dB
30dB
35dB
A
B
D
C
E
F
G
Diagram 2. Capacity range, Air connection Ø160
A: Individual offices, south facing
12 m215 l/s
500-800 W cooling load
C: Individual offices for customer visits
12 m230 l/s
700-1000 W cooling load
D: Individual office for customer
visits, solar protection
12 m230 l/s
450-750 W cooling load
E: Conference room
8 m240 l/s
700-850 W cooling load
F: Conference room
10 m260 l/s
900-1150 W cooling load
G: Conference room
12 m280 l/s
1150-1500 W cooling
load
Total cooling capacity, air and water
B: Individual office, solar protection
12 m215 l/s
250-500 W cooling load
PARASOL Zenith b
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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 aerodynamic designed dual outlets in combination
with the integrated damper and the placement of the slot
openings, PARASOL Zenith distributes the air with very
good adhesion to the suspended ceiling (Coanda effect)
even at low driving pressure and you do not need to place
a commissioning damper in front of the product.
If you still, for example in large conference rooms with up
to four products, want to install a VAV damper in front,
the duct pressure, dependent on the air flow rate, can be
lowered down to 20 Pa.
Figure 7. Double outlets.
All 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.
ADC can also be used to reduce the throw length. By setting
ADC to L-shape, the distance between two units can be
reduced to a minimum and still ensure good comfort.
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 direction of the air can be easily adjusted and gives
future-proofing, offering a simple measure on location for
any change to the furnishings and layout. The ADC does
not affect the sound level or static pressure at all.
+40˚
-40˚
0˚
Figure 8. Possible settings for the ADC, Fan-shape
40
Figure 9. Possible settings for the ADC, X-shape
Figure 10. Parasol Zenith with examples of different ADC settings
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PARASOL Zenith b

Figure 11. Standard face plate Circular holes arranged in a square
pattern
Figure 12. PD face plate Circular holes arranged in a square
pattern with a graduated border
Figure 13. PE face plate Square holes arranged in a square
pattern with a graduated border
Figure 14. PX face plate Circular holes arranged in a square
pattern - 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 extract 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.
PARASOL Zenith b
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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 dismantling,
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
environment. 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 15. Installation in existing T-bar system
Hygienic design
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
surfaces 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 16.
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 cleaning of
the top of the coil in these instances, see figure 17.
Figure 16. Removing the face plate to access the coil
Figure 17. 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.
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PARASOL Zenith b

Alternative air connections
The air connection on the short side (1)
Air connections on the long side (2 and 4)
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 21). You can choose between the
air connection on either of the long sides or one of the
short sides. Installations frequently appear as in figure 18.
Straight ducts are of course always preferable.
Figure 18. Installation example.
Straight air connection, alternative with 90° bend.
Figure 19. Air connection on the product's short side
Figure 20. Air connection on the product's long side.
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
600/1200/1800
Figure 21. Alternative air connections
Position 1 = Short side connection
Position 2 and 4 = Long side connection
2
1
1
1
4
4
2
600
1200
1800
1200
1800
1200
1800
PARASOL Zenith b
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Installation - Details
Suspension
PARASOL Zenith has four mounting brackets for suspension
and are installed using one threaded drop rod in each
mounting bracket (Figure 23). A double threaded rod
with a thread lock should be used if there is substantial
distance 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 22) 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
For an even more efficient and time-saving installation,
we have developed a kit for easier installation. PARASOL Z
QUICK SUSPENSION KIT, consisting of 2 fixed brackets.
The fixed brackets are fastened to the ceiling. The product
can then be pushed into place without the use of tools.
The brackets also feature an integrated fine adjustment of
approx. 50 mm in height. (Figure 24).
Figure 23. Suspension in four brackets with SYST MS M8
Figure 22. Assembly piece SYST MS M8-1, ceiling mount and
threaded rod
50mm
Centring kit
The centring kit can ideally be used on the ceiling system
such as FOCUS E, FOCUS D and similar ceilings with
concealed T-bar system or shadow line.
The kit consists of 6 centring rails that are used to centre
the product in specific suspended ceiling systems. (Figure
25).
Figure 24. Installation with quick bracket
PARASOL Z QUICK SUSPENSION KIT
Figure 25. Centring kit
SYST CENTRING KIT PARASOL
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PARASOL Zenith b

Connection sizes
Water
Unit Cooling Heating
(mm) Supply and return Supply and return
600, 1200 plain pipe ends plain pipe ends
(Cu) Ø 12 x 1.0 mm (Cu) Ø 12 x 1.0 mm
1800 plain pipe ends plain pipe ends
(Cu) Ø 15 x 1.0 mm (Cu) Ø 12 x 1.0 mm
Alternative to factory fitted valves
Unit Cooling Heating
(mm) Return Return
600, 1200 DN15 male thread DN15 male thread
1800 DN20 male thread DN15 male thread
Air
Unit Air connection, diameter Ø
(mm) Ø 125 Ø 160 Ø 200
600, 1200   
1800   
Alternative connection side
For lengths 1200 and 1800 with long side connection 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 on location, if at a
late stage you choose to connect on the opposite page.
Selectable air connection sides
Unit Selectable connection side
(mm) side 1 side 2 side 4
600   
1200 
1800 
Connections
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
separately.
Air
The air connection sleeve is supplied mounted on the side
of the product you choose when ordering.
PARASOL Zenith b
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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.
Table 1. Cooling capacity for natural convection
Unit Cooling capacity (W) for temperature difference,
room - water ∆Tmk (K)
(mm) 6 7 8 9 10 11 12
600 28 33 39 44 55 56 62
1200 69 83 97 111 125 141 155
1800 89 106 123 143 160 179 199
Table 2. Pressure drop constant - water, Kpk
Unit (mm)
Function
A2 B2
kpk cooling* kpk cooling*
600 0.0218 -
1200 0.0161 0.0180
1800 - -
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.
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PARASOL Zenith b

Table 3 – Data – Cooling. Sizing Guide for Parasol Zenith at 75 Pa
Unit 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 678910 kpl
600 A Ø125 10 36 21 72 96 120 144 167 194 222 250 278 1.16
20 72 26 144 192 240 288 227 265 303 341 379 2.34
30 108 30 216 288 360 432 266 311 355 399 444 3.56
40 144 33 288 384 480 576 290 339 387 435 484 4.86
43 155 35 310 413 516 619 295 344 393 442 491 5.27
600 A Ø160 10 36 20 72 96 120 144 167 194 222 250 278 1.16
20 72 25 144 192 240 288 229 267 305 343 381 2.32
30 108 29 216 288 360 432 269 313 358 403 448 3.49
40 144 32 288 384 480 576 296 345 394 443 493 4.69
45 162 33 324 432 540 648 305 355 406 457 508 5.27
600 B Ø125 10 36 21 72 96 120 144 1.16
20 72 26 144 192 240 288 2.34
30 108 30 216 288 360 432 3.56
40 144 33 288 384 480 576 4.86
43 155 35 310 413 516 619 5.27
600 B Ø160 10 36 20 72 96 120 144 1.16
20 72 25 144 192 240 288 2.32
30 108 29 216 288 360 432 3.49
40 144 32 288 384 480 576 4.69
45 162 33 324 432 540 648 5.27
1200 A Ø125 10 36 <20 72 96 120 144 273 319 364 410 455 1.16
20 72 25 144 192 240 288 415 484 553 622 691 2.34
30 108 27 216 288 360 432 510 595 680 765 850 3.57
40 144 29 288 384 480 576 571 666 761 856 951 4.89
45 162 30 324 432 540 648 590 688 786 884 983 5.59
1200 A Ø160 10 36 <20 72 96 120 144 275 321 367 413 459 1.16
25 90 23 180 240 300 360 419 489 559 629 699 2.90
40 144 25 288 384 480 576 518 605 691 777 864 4.69
60 216 28 432 576 720 864 616 718 821 924 1026 7.19
86 310 36 619 826 1032 1238 654 763 872 981 1090 10.76
1200 B Ø125 10 36 <20 72 96 120 144 260 303 346 389 433 1.16
20 72 25 144 192 240 288 380 444 507 570 634 2.34
30 108 27 216 288 360 432 456 532 608 684 760 3.57
40 144 29 288 384 480 576 509 594 679 764 849 4.89
45 162 30 324 432 540 648 531 620 708 797 885 5.59
1200 B Ø160 10 36 <20 72 96 120 144 239 278 318 358 398 1.16
25 90 23 180 240 300 360 389 453 518 583 648 2.90
40 144 25 288 384 480 576 480 560 640 720 800 4.69
60 216 28 432 576 720 864 566 661 755 849 944 7.19
86 310 36 619 826 1032 1238 611 713 815 917 1019 10.76
Cooling
Locked ∆T 3K on the water side, temperature inlet flow +14°C, return flow +17°C.
The specified sound level applies to straight connection without damper or with fully open damper. Room attenuation = 4 dB
PARASOL Zenith b
16 Swegon reserves the right to alter specications. 23/03/2019

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 solutions.
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 perimeter
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.
Different operating scenarios can be simulated easily
using the Swegon ESBO software to calculate the heat
balance where both the room air temperature and
operative temperature 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 and people are present,
the stratification is reduced or disappears depending on
the heating load.
Laboratory studies, computer simulations and reference
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 4. Pressure drop constant - water, Kpv
Unit
Function
A2 B2
(mm) Kpv heating* Kpv heating*
600 -
1200 -0.0284
1800 - -
B2 = Cooling, heating and supply air, serial connected double
row coil
*Kpv-values for the water flow 0.03l/s.
17
23/03/2019 Swegon reserves the right to alter specications.
PARASOL Zenith b

Locked ∆T 10K on the water side, temperature room +20°C.
*) ∆T 5K on the water side
The specified sound level applies to straight connection without damper or with fully open damper. Room attenuation = 4 dB
Table 5 – data – heating. Sizing Guide for Parasol Zenith at 75 Pa
Unit Air flow Sound
level
Heating capacity, water at ∆Tmv (K) Pressure drop con-
stant, air
mm l/s m3/h dB(A) 10* 15 20 25 30 35 kpl
600 B Ø125 10 36 21 1.16
20 72 26 2.34
30 108 30 3.56
40 144 33 4.86
43 155 35 5.27
600 B Ø160 10 36 20 1.16
20 72 25 2.32
30 108 29 3.49
40 144 32 4.69
45 162 33 5.27
1200 B Ø125 10 36 <20 346 336 514 706 922 1130 1.16
20 72 25 350 498 755 1034 1342 1648 2.34
30 108 27 408 587 891 1220 1587 1905 3.57
40 144 29 438 629 947 1292 1665 1996 4.89
45 162 30 453 654 987 1379 1728 2074 5.59
1200 B Ø160 10 36 <20 165 235 354 482 637 765 1.16
25 90 23 364 520 780 1059 1389 1668 2.90
40 144 25 440 628 934 1265 1619 1941 4.69
60 216 28 500 716 1060 1457 1805 2162 7.19
86 310 36 516 743 110 4 1512 1876 2251 10.76
1800 B Ø200
PARASOL Zenith b
18 Swegon reserves the right to alter specications. 23/03/2019

= 100 Pa
Figure 27. Knob seen from below
Figure 26. Knob placement
K-factor table
Knob
19
23/03/2019 Swegon reserves the right to alter specications.
PARASOL Zenith b
0
10
20
30
40
50
60
70
80
90
D
E
p = [Pa]
i()
k
q2
pi[Pa]
q [l/s]
k= k-factor
i
√
q = k· p [l/s]
i
√p = k
q
K-factor setting
You can easily set the required k-factor with the help of
the knob located on the short side opposite the short side
with water connections.
Example: To achieve the required flow of 25 l/s at
100 Pa, requires k-factor 2.5
A:Find the product’s length and air connection diameter
from left-hand side of the k-factor table.
B:Read the required k-factor on the row in question.
C:Follow the vertical row and read the number of degrees
at the bottom.
D:Loosen the screw located in the knob’s groove (the
knob then moves to the fully open position, 90°) Turn
the knob until the marking “D” reaches the required
number of degrees.
E:In the example from the table for a PARASOL Zenith
with length 1200, ø125, k-factor 2.5, turn the knob to 44°.
The right to design changes is reserved.
Current data according to product selection program.
81878101
p
q=k*
degrees
10 20 30 40 50 60 70 80 90
max
k-factor PARASOL Zenith
1200
d125
600
d125
d160
1200
d160
1800
d200
1 2 3 4 5 6 7 8 9 10 11 12 13
1 2 3 4 5 6 7 8 9 10
0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5
0,5 1 1,5 2 2,5 3 3,5 4 4,5 5 5,5
C
AB

Table 6. Natural attenuation ∆L (dB)
PARASOL Zenith 600 Ø125
K-factor
(COP)
Octave band (Hz)
63 125 250 500 1k 2k 4k 8k
122 19 11 8 8 9 12 19
222 18 10 8 8 8 10 17
322 18 9 8 7 7 10 16
422 17 10 8 7 6 9 15
5.7 20 17 10 7 7 6 9 14
Table 7. Natural attenuation ∆L (dB)
PARASOL Zenith 1200 Ø160
K-factor
(COP)
Octave band (Hz)
63 125 250 500 1k 2k 4k 8k
121 18 9 8 8 9 15 20
318 16 9 5 6 6 11 15
518 14 9 5 5 5 10 13
5.7 18 14 9 5 5 5 10 13
Table 8. Natural attenuation ∆L (dB)
PARASOL Zenith 1200 Ø125
K-factor
(COP)
Octave band (Hz)
63 125 250 500 1k 2k 4k 8k
223 19 9 9 8 7 11 18
422 17 9 8 7 6 9 16
623 17 9 8 7 6 9 15
823 17 9 8 7 6 8 14
9.9 22 17 9 8 7 5 8 13
Table 9. Natural attenuation ∆L (dB)
PARASOL Zenith 1200 Ø160
K-factor
(COP)
Octave band (Hz)
63 125 250 500 1k 2k 4k 8k
220 16 10 8 7 7 12 18
419 16 10 7 7 6 10 16
620 16 10 7 6 5 9 15
820 16 9 6 5 4 9 14
10.85 18 16 9 6 5 4 9 13
Table 10. Natural attenuation ∆L (dB)
PARASOL Zenith 1800 Ø160
K-factor
(COP)
Octave band (Hz)
63 125 250 500 1k 2k 4k 8k
Launched in week 17
Natural attenuation and end reflection
Natural attenuation ∆L (dB) including end reflection.
PARASOL Zenith b
20 Swegon reserves the right to alter specications. 23/03/2019