CMS - Halton

halton.com

CMS - Halton

CMS

Conical Ceiling Diffuser

20/CMS/3500/0606/EN

• Horizontal air supply, suitable also for exhaust

• Cooling applications with supply/room air

temperature difference as low as -8 °C

• Installation flush to the ceiling or exposed

• Circular duct connection with rubber gasket

Product Models & Accessories

• Models integrated in a panel for installation in

modular suspended ceilings with dimension

options of 450 x 450, 600 x 600 or 675 x 675 mm

• Balancing plenum with airflow adjustment function

(PLC) or even with measurement function (TRI)

• Adjustment module for balancing of the airflow

MATERIAL AND FINISHING

PART MATERIAL FINISHING

Diffuser Steel Epoxy-painted (White RAL 9010 or Grey RAL 7004)

Plenum box

Galvanised steel

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QUICK SELECTION

Pa 192 288 384 480 576 672 864 1056 1248 1536 1920 2400 2880 3360

qv l/s 20 30 40 50 60 70 90 110 130 160 200 250 300 350

m 3 /h 72 108 144 180 216 252 324 396 468 576 720 900 1080 1260

20/CMS/3500/0606/EN

CMS-125 LpA 9 19 26 33 38 42

DPst 6 14 26 40 58 79

DPtot 8 18 32 50 72 98

Ld - - - - - -

Lmin - 0,5 0,7 1,2 1,6 2,0

L0.2 1,4 2,0 2,6 3,2 3,6 4,3

CMS-160 LpA 15 21 27 31 35 42 47

DPst 3 6 9 13 18 29 44

DPtot 5 8 13 18 25 41 62

Ld - - - - - - -

Lmin - 0,5 0,6 0,9 1,2 1,9 2,5

L0.2 1,4 2,0 2,4 2,8 3,2 4,0 4,8

CMS-200 LpA 22 26 29 33 37 40 45

DPst 3 4 5 9 13 18 28

DPtot 4 6 8 14 20 28 43

Ld - - 2,6 3,2 3,6 4,2 4,8

Lmin 0,5 0,5 0,7 1,2 1,7 2,2 2,9

L0.2 2,0 2,4 2,8 3,8 4,6 5,4 6,6

CMS-250 LpA 23 26 29 32 37 44

DPst 4 6 8 12 18 29

DPtot 6 9 12 18 28 44

Ld 2,6 3,0 3,4 4,0 4,6 5,4

Lmin 0,7 1,1 1,5 2,0 2,8 3,7

L0.2 2,8 3,4 4,2 5,2 6,4 8,0

CMS-315 LpA 21 23 26 30 34 38 43

DPst 2 3 5 8 13 18 25

DPtot 4 5 8 12 19 27 37

Ld 2,4 2,6 3,0 3,4 4,2 4,8 5,4

Lmin 0,6 0,9 1,4 2,0 2,7 3,4 4,2

L0.2 2,6 3,2 4,0 5,0 6,2 7,4 8,6

LpA values presented with room attenuation 4 dB (red 10m 2 -

sab). When using room attenuation 8 dB (red 25m 2 - sab):

LpA - 4dB.

Pa

LpA

DPst

Supply air cooling capacity, W

A-weighted sound pressure level, reduced by total

equivalent absorption surface of 10m 2 , dB(A) red

0m 2 - sab

Static pressure drop, Pa

DPtot

Ld

Lmin

L0.

Total pressure drop, Pa

Distance from the supply unit, at which air jet

detaches from ceiling, m

Minimum distance between central lines of two

supply units, m (V3 = 0,25m/s at 1.8m height)

Isotermal throw length, m when residual velocity of

supply air jet 0,2 m/s

Room temperature (Tr) = 24 °C

Supply air temperature (Ta) = 16 °C

Room height

= 2,8 m

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ACCESSORIES

ACCESSORY CODE DESCRIPTION

Plenum PLC Plenum for duct connection (with or without insulation)

Balancing plenum with airflow measurement

and adjustment unit

TRI/N

For balancing, equalising the airflow

Sound attenuation IN Polyester fibre as sound attenuation material in the TRI plenum.

Mineral wool as sound attenuation material in the PLC plenum

Airflow measurement and adjustment unit MSM For supply installation

Airflow adjustment unit LD Circular galvanised steel unit for flow adjustment (inside the coupling

sleeve)

Airflow adjustment damper DC Circular galvanised steel blade damper for flow adjustment (inside the

coupling sleeve)

Brackets BR To fix the diffuser to the PLC or TRI plenum, easily removable

20/CMS/3500/0606/EN

PRODUCT MODELS

PRODUCT MODEL CODE DESCRIPTION

Diffuser integrated in front panel,

600 x 600 mm

Diffuser integrated in front panel,

450 x 450 mm

Diffuser integrated in front panel,

670 x 670 mm

CMS/B

CMS/C

CMS/D

Sizes 160, 200 and 250 are available integrated in a steel panel for installation in a

modular 600x600 mmsuspended ceiling.

The external dimensions of the front panel are 595 mm x 595 mm.

Sizes 160 and 200 are available integrated in a steel panel for installation in a

modular 450x450 mm suspended ceiling.

The external dimensions of the front panel are 445 mm x 445 mm.

Sizes 160, 200, 250 and 315 are available integrated in a steel panel for installation

in a modular 675x675 mm suspended ceiling.

The external dimensions of the front panel are 670 mm x 670 mm.

DIMENSIONS

NS ØW ØD Number of cones

125 225 123 2

160 260 158 3

200 300 198 4

250 350 248 5

315 415 313 6

ØW

Model with front panel

ØD

NS

450x450

600x600

675x675

W

445x445

595x595

670x670

82

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20/CMS/3500/0606/EN

Function

Supply air is divided horizontally into several jets

through the cones.

Room air and supply air mix.

The diffuser can also be used as an exhaust unit.

Installation

The CMS diffuser can be installed flush with a

suspended ceiling or fully exposed in the space.

The diffuser is connected directly to the duct using

a PLC plenum or TRI balancing plenum. When it is

connected directly to ductwork, a safety distance

of minimum 3D upstream of the diffuser should be

maintained.

Installation with plenum TRI or PLC

CMS ØD TRI H

125 125 TRI-125-125 281…311

160 160 TRI-160-160 321…351

200 200 TRI-200-200 371…401

250 250 TRI-250-250 435…465

315 315 TRI-315-315 481...511

When the TRI spigot is installed in the plenum, the H

dimensions can be reduced by 60 mm.

CMS ØD PLC H

125 125 PLC 355 307…337

160 160 PLC 400 307…337

200 200 PLC 450 397…427

250 250 PLC 560 397…427

315 315 PLC 630 547…577

TRI / PLC

ØD

H

The technical performance for the combination of

supply air diffuser and TRI plenum is presented

separately for the two different installations. See HIT

Design software.

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Adjustment

The airflow rate can be adjusted and measured only

when the diffuser is installed.

In order to enable airflow adjustment and

measurement of airflow rate, we recommend that the

diffuser be connected to a plenum equipped with the

MSM module.

The supply flow rate is determined using

measurement and adjustment module MSM.

Detach the diffuser and pass the tubes and control

spindle through the diffuser.

Measure the differential pressure using a manometer.

The airflow rate is calculated using the formula below.

q

v

= k *

p

m

Servicing

Remove the diffuser by gently drawing it out.

Clean the parts by wiping them with a damp cloth.

Push the diffuser back into place.

Option: with balancing plenum TRI + MSM or PLC +

MSM

Remove the measurement and adjustment module by

pulling gently on the shaft (not the control spindle).

Wipe the parts with a damp cloth, instead of

immersing in water.

Reassemble the measurement and adjustment

module by pushing the shaft until the module meets

the stopper.

Push the diffuser back into place.

20/CMS/3500/0606/EN

Adjust the airflow rate by rotating the control spindle

until the desired setting is achieved.

Lock the damper position with a screw.

Replace the tubes and spindle in the plenum and push

the diffuser back into place.

K factor for installations with different safety distances

(D= duct diameter)

PLC/TRI >8XD min 3XD

125 9.9 12.6

160 16.9 21.9

200 28.3 31.0

250 47.9 51.5

315 78.6 -

Airflow adjustment damper DC

The airflow rate is adjusted by turning the damper

blades behind the diffuser with a screwdriver. The

measurement is carried out when the diffuser is

installed.

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Pressure drop, throw pattern and sound data

CMS-125, CMS-160, CMS-200

CMS-250, CMS-315

20/CMS/3500/0606/EN

Selection example :

Requirements : qv = 200 l/s Selection: CMS-315

Lp(A) < 35 dB(A)

Lp(A) = 30 dB(A)

L0.2 < 7.0 m L0.2 = 6.2 m

DPtot = 12 Pa

SOUND LEVEL DATA, SUPPLY

qv DPst DPtot F (Hz) LpA NR NC

(l/s) (m 3 /h) (Pa) (Pa) 63 125 250 500 1000 2000 4000 8000 [dB(A)]

CMS-125 38 137 23 29 3 35 33 26 21 15 14 3 25 19 16

46 166 34 42 3 39 39 32 27 21 18 3 30 24 22

54 194 47 58 3 43 43 36 31 26 22 3 35 29 27

64 230 66 82 3 48 48 42 37 33 27 3 40 34 33

CMS-160 46 166 8 11 3 33 32 29 14 3 3 3 25 22 20

57 205 12 17 3 39 37 35 22 8 5 3 30 27 25

70 252 18 25 3 44 42 40 30 17 12 3 35 32 30

84 302 26 36 3 48 46 44 37 26 17 3 40 36 35

CMS-200 59 212 4 6 3 10 18 28 27 3 3 3 25 23 21

76 274 6 10 3 19 24 32 32 3 3 3 30 28 27

100 360 11 17 3 29 31 37 38 7 3 3 35 33 32

128 461 18 28 3 38 38 41 43 19 9 3 40 38 37

CMS-250 105 378 5 8 3 26 27 32 9 3 4 3 25 24 22

140 504 9 14 3 33 33 36 21 6 9 3 30 28 27

180 648 15 23 3 40 39 40 32 19 14 3 35 32 31

220 792 22 34 3 45 43 43 40 29 18 3 40 36 35

CMS-315 145 522 4 6 3 32 25 32 11 3 3 3 25 24 22

200 720 8 12 3 37 32 36 23 3 6 3 30 28 27

260 936 14 20 3 42 37 39 33 15 13 3 35 32 30

320 1152 21 31 3 46 41 42 41 26 18 3 40 37 36

LpA values presented with room attenuation 4 dB (red 10m 2 - sab). When using room attenuation 8 dB (red 25m 2 - sab): LpA - 4dB.

NR/NC noise criteria

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Suggested Specifications

The diffuser shall be made of several stamped cones,

made of epoxy-painted steel with a white (RAL 9010)

or grey (RAL7004) standard colour.

The diffuser shall be suitable for installation on

exposed ductwork or flush to the ceiling.

Product Code

CMS-D

D = Diameter of duct connection

125, 160, 200, 250, 315

Specifics and accessories

20/CMS/3500/0606/EN

Option 1

The diffuser shall be connected to the ductwork

using a TRI balancing plenum, which utilises polyester

fibre with a washable surface as sound attenuation

material.

WS = Width of suspended ceiling element

NA Not Assigned

450 450 x 450

600 600 x 600

670 670 x 670

Option 2

The diffuser shall be connected to the ductwork using

a PLC plenum, which utilises mineral wool as sound

attenuation material.

The plenum shall have an airflow measurement and

adjustment unit.

The diffuser shall be suitable for installation in 450

x 450-mm, 600 x 600-mm and 675 x 675-mm false

ceilings.

The diffuser shall be removable.

The air discharge pattern shall be radial around the full

perimeter of the air diffuser.

The cones shall form divergent sections, which shall

create areas of underpressure and so induce room air

into the unit.

CO = Colour

W White

G Grey

Code example

CMS-125, WS=NA,CO=W

Sub products

PLC Plenum (Ceiling diffusers)

TRI Plenum (Diffusers)

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