Example location of Cumulus in office

06

Cumulus

CumulusChilled beam for recessed mounting

2018-07-24

1

Key figures

Connections: 1x100 mm, 2x100 mmSupply airflow: 5 - 60 l/sPressure range: 40 - 100 PaSize: 293 x 200 mm (WxH)Length: 1192 or 1792 mmTotal effect: up to 1200WColor: Standard white RAL 9003 gloss 30

Cumulus is available in MagiCAD database.

Cumulus is a powerful but small chilled beam, with high capacity and a wide working range, designed to always provide maximum performance. Cumulus creates a good and energy-efficient indoor climate through its stratifying ventilation principle.

Cumulus is integrated into standard suspended ceilings or other types of ceilings.

Cumulus has a wide range of applications and can be used both in large-scale environments and in cellular offices.

Function

Cumulus is a ceiling-mounted one-way blowing chilled beam for cooling and ventilation, that uses the wall to sup-ply the air into the living zone.

Cumulus is designed to create a thin vertical stream of air along the wall with the help of the Coanda effect, thus en-suring that the fresh air effectively reaches the living zone. Through interaction with the thermal driving forces from the heat sources, an energy-efficient indoor climate is cre-ated where the fresh air is effectively supplied to the people in the room, while heated contaminated air can rise in the room and be removed with the exhaust air system. This not only ensures that the best possible indoor climate is creat-ed, but also requires less resources compared to a tradi-tional mixing ventilation system.

Stratification of the air temperature in the room gives a larg-er difference between the supply air temperature and the exhaust air temperature, which means that a higher heating power can be removed with the same amount of air as for a mixing ventilation system. The result is simply a better ther-mal indoor climate.

Construction

Cumulus is a chilled beam with a casing in galvanized steel and a battery for cooling or heating made of copper and aluminum.

Cumulus, as standard, has an air connection in each end portion (Ø100), where one connection is attracted. At high air volumes, both connections should be used to reduce the noise level.

Cumulus induces room air through a perforated surface on the bottom of the beam. The devices are preset at the fac-tory for the correct flow and pressure, if this is stated when ordering.

Wall

Outlet (supply air + room air)

Inductionof room air

Adjustment

Cumulus can be delivered preset for specific pressures / flows. If necessary, assemble damper or similar can be mounted for adjustments of the flow (for one or more chilled beams). Post-adjustment can be made in place by closing or opening nozzles.

Cumulus is regulated on the water circuit by means of valves and actuators which are connected to a room con-trol which can regulate one or more beams in parallel. See separate documentation for room control and adjustment of water flows

Tillval - undertakslist

If suspended ceilings with concealed framework eg Master DS is used, Cumulus can be supplemented with custom ceiling tiles. Main profiles c / c are mounted in the longitu-dinal direction of the beam. The passbits can then rest on the Cumulus suspended ceiling profiles (see illustration below).

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Cumulus

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Material & Color

Cumulus is classified as green in Byggvarubedömningen and meets the corrosivity class C2. For complete material specification, download our Cumulus product declaration.

Cumulus is, as standard, powder coated in white color RAL9003 gloss 30, which gives high surface finish and good impact- and scratch resistance. Cumulus can also be coated in any color or with a galvanized design, which must be stat-ed in the order code.

max 900

Mounting

Cumulus is adapted for recessed mounting in suspended ceilings, but can also be folded into other types of ceilings or mounted freely. See installation instructions.

Cumulus is mounted with a distance of 0-900 mm from the wall for best function.

c/c 600

List comes with beam

Air direction against the wall

Passbit is supple-mented on site

Passbit is supp-lemented on site

Cumulus-X (extra air)

Cumulus is available with a nozzle configuration for extra large airflow, then we call it Cumulus-X. Cumulus-X is availa-ble in 2 different lengths, 1192 and 1792 mm.

For airflows above 35 l / s, we recommend that Cumulus are connected at both end portions to avoid high noise levels.

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Cumulus

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The specified sound pressure level in the kapacity diagrams are including room damping 4 dB (A), corresponding to an equivalent sound absorption area of 10m2 Sabine.

63

63

-10

21

125

125

-7

19

250

250

-7

15

500

500

-5

8

1000

1000

-4

8

2000

2000

-4

9

4000

4000

-5

3

8000 Hz

Hz8000

-5

1

Sound pressure level correction (Lp) to sound pow-er level (Lw) in each octave band *

Self-damping in the octave bands *

Sound pressure level Lp dB (A)

Capacity & adjustment diagram Cumulus

Diff

eren

tial p

ress

ure

(Pa)

10 20 30 405

50

100

5010

k=2,2 k=3,5K-factor

30

25

Airflow (l/s)Cumulus 1

200

Cumulus 1800

35

30

Capacity & adjustment diagram Cumulus-X (extra air)

Diff

eren

tial p

ress

ure

(Pa)

10 20 30 405

50

100

50 10010

K-factor k=4,3 Sound pressure level Lp dB (A)

Airflow (l/s)

Sound values for airflow over 35 l/s, are reported for double connection above.

The diagram refers to maximum flows, fully open. Cumulus can be delivered preset for the specified pressure and flow.

The diagram refers to maximum flows, fully open. Cumulus can be delivered preset for the specified pressure and flow.

Cumulus-X 1200*

25

k=6,5

Cumulus-X 1800*

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Cumulus

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Cumulus-X 1200

Cumulus 1200

Cumulus-X 1800

Cumulus 1800

Effec

t at ∆

T 10

° (te

mp.

room

- te

mp.

wat

err)

+ ∆

T 8°

air

[W]

1000

1100

1200

1300

1400

800

900

700

600

500

400

3000,0 10,0 20,0 40,030,0 60,050,0 70,0 Airflow [l/s]

Overview of total power for Cumulus & Cumulus-X, 80 Pa

Dashed lines - For airflows above 32 l/s, we recommend that Cumulus are connected in both air connections.

293

322

60Ø100

60 124 26

47

124

L

L1

50

200

Dimensions & connections (duct dimension Ø100, pipe dimensions 12 mm)

Product name

Cumulus 1200

Cumulus 1800

Length (L)

1200

1800

Mounting lengthwise (L1)

800

1400

Mounting widthwise (W1)

322

322

Measure mounting

9X30

9x30

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Cumulus

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Connections (right, left, double)

Cumulus can be provided with air connection and pipe connections on the left or right side.

For airflows above 35 l / s, we recommend that Cumulus are connected with air at both end portion,s to lower the sound values.

The picture to the right shows a plan view of an office and how to read the connections on Cumulus in relation to a room.

Example

LHLVRHRV

RightLeft

Wall (view from above)

Control equipment

InventiAir are able to deliver complete control systems or individual components.

Valves & connectivity package

Control valve• FVR-10 incl compression fittings DN12

Aerators valve (manual) • Aerators valve NC incl push-fit DN12

Stop valve• TA400 incl compression fittings DN12

R

Connection hose• Oxy L=400 pipe DN12 / push-fit DN12 (diffusion

proof)

• Oxy L=400 pipe DN12 / pipe DN12 (diffusion proof)

Actuator• 24V NC - pulse modulating digital on/off control

• 24V 0-10V NC - modulating analogue control

The connections are defined by the direction Cumulus blows the air towards the wall.

Connection type

LH-RH

LH-RV

LV-RV

LV-RH

LD-RV

LD-RH

Description

Air right - pipes right

Air right - pipes left

Air left - pipes left

Air left - pipes right

Air double - pipes left

Air double - pipes right

Transformer• Sizes between 20-150 VA 24V, plug or fixed connection

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Cumulus

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Circuit boards (see separate documentation)

Circuit boards for quick and easy connection of all the con-trol functions in a control system. Connects the controller with peripheral control components in the control zone and forwards the electrical supply and control signals. Use of a circuit board also helps a lot for future changes to the sub-division and control zones.

Connect MaxiCircuit board for power supply and communication with several types of external sensors such as; presence, CO2, humidity sensor, VAV and boosting damper.

Connect MidiCircuit board with RJ45 cables and external sensors for hu-midity sensor, VAV and boosting damper.

Connect MiniCircuit board with the basic function cooling and heating.

MinMax 2-position damper (see separate documenta-tion)

Patented damper for basic flow/maximum flow that re-quires no silencer. Available with or without engine. By de-fault it comes with 24V engine.

Room controller (see separate documentation)

We have three different control units depending on the pe-ripherals to be regulated and if there are demands for com-munication with superior systems via Modbus or BACnet. Contact InventiAir for help, finding the right equipment for your needs.

Diwa B (room controller)Room controller for sequence control of heating and cool-ing or only heating or cooling without communication with the host system. Integrated function for connecting the condensation sensor.

Diwa C (room controller)Diwa C is a programmable controller with communication via Modbus or BACnet, but which can also be used as a stand-alone control unit. Integrated function for connecting the condensation sensor.

Diwa CD (room controller)Diwa CD is a programmable controller with LCD display. Communication over Modbus or BACnet, but which can also be used as a stand-alone control unit. Ability to pro-gram most of the functions directly in the control unit with-out superior control system. May be beyond the capabilities of the C Diwa also be combined with analog CO2 sensor 0-10V. Integrated function for connecting the condensation sensor.

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Cumulus

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120 Pa

100 Pa

100 Pa

80 Pa

80 Pa

60 Pa

60 Pa

40 Pa

40 Pa

Power chart, Cumulus 1800 (chart 2)

Power chart, Cumulus 1200 (chart 1)

Effec

t wat

er c

ircu

it (te

mp.

roo

m -

tem

p. w

ater

) [W

/°K]

Nom

inal

pow

er a

t flow

0,0

25 l/

s

Effec

t wat

er c

ircu

it (te

mp.

roo

m -

tem

p. w

ater

) [W

/°K]

Nom

inal

pow

er a

t flow

0,0

38 l/

s

50

60

70

80

90

40

60

50

30

40

20

30

0,0

0,0

15,0

15,0

10,0

10,0

5,0

5,0

20,0

20,0

25,0

25,0 30,0 40,035,0

30,0

45,0

Airflow [l/s]

Airflow [l/s]

Power charts

The power charts shows the cooling capacity of the water circuit at a given static nozzle pressure and the desired airflow in Cumulus.The effect on the water circuit is read on the left scale is Watt per Kelvin and shall be multiplied by the number of degrees of temperature difference, which consists of the temperature difference between the average temperature

E

of the water circuit and the calculated room temperature, including the estimated stratification. The effect applies to a nominal water flow of 0.025 l/s on the water circuit for the length 1200 and 0.038 l/s for the length 1800. For a more precise calculation of cooling capacity, where the flow deviates from the nominal flow (use chart 5 on page 9).

Dashed lines - At airflows over 32 l/s, we recommend that Cumulus is connected to bothend portions to reduce the noise level.

120 Pa

120 Pa

100 Pa

100 Pa

80 Pa

80 Pa

60 Pa

60 Pa

40 Pa

40 Pa

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Cumulus

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Power chart, Cumulus-X 1200 (extra air) (chart 3)

Power chart, Cumulus-X 1800 (extra air) (chart 4)

Effec

t wat

er c

ircu

it (te

mp.

roo

m -

tem

p. w

ater

) [W

/°K]

Nom

inal

pow

er a

t flow

0,0

25 l/

sEff

ect w

ater

cir

cuit

(tem

p. r

oom

- te

mp.

wat

er) [

W/°

K]N

omin

al p

ower

at fl

ow 0

,038

l/s

60

50

70

80

70

90

100

40

60

50

30

40

20

30

0,0

0,0

30,0

30,0

20,0

20,0

10,0

10,0

40,0

40,0

50,0

50,0 60,0 70,0 80,0

Airflow [l/s]

Airflow [l/s]

Dashed lines - At airflows over 32 l/s, we recommend that Cumulus is connected to bothend portions to reduce the noise level.

Dashed lines - At airflows over 32 l/s, we recommend that Cumulus is connected to bothend portions to reduce the noise level.

Cumulus 1200 Cumulus 1800

The pressure drop is calculated for a water temperature of 15°C

Pres

sure

[kPa

]

0,0

15,0

20,0

25,0

30,0

10,0

5,0

Water flow qw [l/s]0,01 0,03 0,04 0,05 0,06 0,07 0,08 0,09 0,10,02

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Cumulus

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Pow

er fa

ctor

Water flow qw [l/s]0,6

0,02

0,03

0,04

0,05

0,06

0,07

0,08

0,09

0,1

0,01

0,7

0,8

0,9

1,0

1,1

1,2

Cumulus 1200 Cumulus 1800

Power factor of turbulence intensity in the cooling coil (single water circuit for cooling)

Example: What is the corrected power of Cumulus 1200 ac-cording to the example on chart 1 on page 7?

Nominal power was 540W and the flow 0.043 l/s. Read the power factor of the chart in the example = 1.04

The flow compensation effect of the water circuit on Cumulus 1200 = 540 x 1,04 = 562 W The new flow is 562W / (3°∆T x 4200) =0,045 l/s

Example: Which pressure does a Cumulus 1200with water temperature KS=14/17 (∆T 3°) at an ef-fect on the water circuit = 562 W? The flow in the climate beam = 562W / (3°∆T x 4200) = 0,045 l/sRead the flow on the x-axis and follow the line of intersection of Cumulus 1200. Read the pressure drop on the y axis = 8 kPa

Flow compensation (chart 5)

Calculation of the flow compensation effect. All reported data on the effect diagram applies for a nominal flow where the power factor = 1.

This flow is 0,025 l/s for Cumulus 1200 and 0,038 l/s for Cumulus 1800, depending on the different dimensions of the constituent tubes in the cooling coil.

F

To calculate a more accurate effect at differing flows, the power factor is calculated and then multiplied by the out-put data in the chart.

Pressure chart Cumulus (chart 6)

Pressure drop in water circuit.

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Cumulus

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Cooling power, supply air (chart 7)

Cool

ing

pow

er [W

]

Order (example)

Order code (example)

Product:Cumulus or Cumulus-X (extra air)

Size:1200 (measure: 1192x293x200 mm (LxWxH)1800 (measure: 1792x293x200 mm (LxWxH)

Connection air:LH - air rightLV - air leftLD - air double

Connections water:RH - pipe rightRV - pipe left

Desired flow and pressure:For example 15 l/s and 60 Pa, stated 15/60

Color:Cumulus is as standard powder coated in white color RAL 9003 gloss 30, unless stated in the order code.For a different color, this have to be indicated by the product name(Cumulus 1200 RV-LH-15/60-RAL9006) if color is omitted, the standard color is delivered.

Cumulus-X 1800 LH RH 15/60---

10°

12°

8°

6°

4°

2°

400

500

600

700

300

200

100

00,0 10,0 20,0 50,030,0 40,0 Airflow [l/s]

Example: Which cooling power does the supply air give at an airflow of 15 l/s and a temperature difference between the supply air and the exhaust air at 8°K ?

Read 15 l/s on the x-axis and the intersection of 8° ∆T, read the effect of the y-axis = 140W

To select the correct designation for connections, see page 5.