SERIES I5 SQUARE & RECTANGULAR AIR DIFFUSERS

NODEL UFSurface Mounted Diffuser

Overlap BorderThe Model MF is designed for surface mounting inplaster or other ceiling material where a flat, over-lapping border is required. Other features include

-

o All extruded aluminum constructiono Baked white paint as standard finisho Removable coreo Available in fitteen different pattems. See page 4.o Available with opposed blade volume control or air

extractor, See page 3.

UODEL TBSurface Mounted Diffuser

Bevel BorderThe Model MB offers this multi-pattern diffuser with theadded features of a beveled frame which brings the air dis-charge one inch below the ceiling line.o Light corrosion resistant aluminum constructiono Easily removable, snap-out, multi-pattern coreo Available in fifteen different patterns. See page 4.o Available with air volume and air equalizing control,

see page 3.o Baked white paint as standard finish.

MODEL MS

Surface Mounted DiffuserOverlap Border

The Model MS is another multi-pattern diffuser designedfor surface mounting in plaster o othe ceiling where a f1at,overlapping borde is required. In addition, MS diffuser issuitable for layn installation on inverted T-bar ceilingsystem. Two frames are available to give MS dimensions of23-% x 23-% and 23-% x 23--7 inches to suit ceiling dimen-sions of 24 x 24 and 23-1'a x 23-s/a inches respectively.Unlike MX model diffuser MS fame is partly visible wheninstalled on inverted T-bar ceilins.

CEILING OPENIIG

L

LISTED SIZE + -7/32

SllC , llnl

LISIEO SIZE + 5-lt/t2

],,,"REXOVABLE CORE

MS diffuser has the same features construction, finish,adiustment and accessories as in MF unit.

MODEL MX

Lay-on Tee BarConceal Border

The Model MX is another unit available for tileceiling known as the inverted T-bar, Ex-posed Runner, Lay-in). The MX is fur-nished ions ll3/axll3/e, ll3/+x233/t, ot233/x233/q.

T -

MX has the same features of construction, finish, aJiust-ment and accessories as the MF unit.

ilEcl( SIIE IrrE stzE NEC|( S|ZE iltE slzE

060606090909

12x120r

ll3/ x ll/l

060606090612090909r2091509180921t2t2l2l5l5l 5l8l82t2l

24x24.0f23Tq x 23Vt

091209150918092r

12x240r

ll1 x 233/c

USft0 stzE + 3!"

usTH, srE + +13/16

F- rlsrto stzE + 3/32 --l

LISID $ZE + 23lt ----:-----------L REMOYABLI CORT

F- LISTED slt +32 -t---l

SERIESSOUARE & RECTANGULAR

IUAIR DIFFUSERS

IUODEL IUIPPanel Mounted Diffusers

To fit varying job conditions, the MS diffuser is mountedin a panel to meet ceiling tile dimensions. The panel issuitable for special ceiling adaptations such as sptne,snap-in-tee, Iay-in and othes. Baked white enamel asstandard. The nominal panel sizes are 12 x 12, 12 x 24,24 x 24 and 48 x 24.The actual panel sizes will be adjustedto suit different ceiling system. The table below shows theMS diffuser size suitable for matching with each panel size.The panel can be constructed of aluminium or steel.

TISTED SIZE

MSDiffuser

NeckSize

MPT MPX MPSNOMINAL PANEL SIZE (X)

r2xr2 24Xt2 ?4X24 48X240606 X X X X0906 X X XI ZUti X X XI 506 X X Xtu6 X X X2t06 x Xu9u9 X xI 209 X XI 509 x XI E(]g X X2 109 x xL'l' X XI 512 X XIIZ x X2]7 XI 515 X XI8l5 X X2l l5 )(IEIE X X2l l8 x

'X'denotes MS neck size suitable for each panel size

^

I

PAftELfiDTH

I

II

DA]UlPERThe type BD, opposed blade damper will provide positive air balan-cing and volume control- The manually adjustable damper may beeither duct mounted or snapped onto the diffuser.

AIR EXTRACTORE25 extractors are constructed of pregalvanised steel vanes assem-bled at 25mm centres to provide smooth elt-icient turing of air flowfrom one duct to another. The extactor vanes are gangoperatedand synchro to remain parallel with air flow regardless of theextractors angle. Installed at the take-off on the downstream sidethe air extractors extract, equalize and provide volume control ofai flow into air outlets, reducing air tutning pressure loss andensuring a quieter system operation. Sound levels ol air outlets canbe reduced considerably due to the absence of turbulance in theduct and localised high velocities in the grilles The air extractormay be lurnished with approriate operator for adjustment afterinstallatio.

Type I extractor is furnished with a pushpull arm and type 2extractor with a rvorm gear operato.

AIR FLOW

PATTERN DESIGNAT(R DESCRtPIt0N

Two-way blow. Corner pattern.Major portion of arflow to left(as illustrated).

Three-way blow. Square diffuser.

Three-way blow. Single segmentin drection of short dimenson.

Three-way blow. Sngle segmentin directon of long dimension.Single segment dmension istwce the double segment di-menston.

Three-way blow. Single segmentin direction of long dimension.Single segment dimension sgreater than twice the doublesegment dmenson.

Four-way blow. Square diffuser.

Four-way blow. Rectangulardiffuser.

DESCRIPTI(II

One-way blow. Square diffuser.

One-way blow. Blades parallel tothe short dimension. Airflow per-pendicular to short dimension.

One-way blow. Blades parallel tothe long dimension. Airfl

SELEGTION PROCEDURE ENGINEERING DATA

TABLE 1 REG('ltrlUlENDED ]U|AXIIU|UI5 GFlUlCEILING

HETGHT (Ft.)

NCCR ITER IA DESCR IPII(lN

Select the diffuser pattern from the chart on page4. Selection will depend on the size and shape ofthe space to be conditioned, and on the layout ofair distribution ductwork.For standard style.s and applications, the outletsizes can be selected from the performance andselection charts on pages 6-10.a.) Check recommended limits of capacity (CFM)

from Table l, page 5.b.) Check recommended limits in neck velocity in

relation to sound levels from Table 2, page 5.

30'

B

10

T2

MAX. CFMPER

DIRECTION(Each Diffuser)

COOLINGDIFFERENTIAL

MAXI MU M

20"

25"

SUCGESTE! MA)(IMUM VET()CIil

750

?r F ^ REGOIU|IU|ENDED SC'UND LEYELISrALt' I and NECI( VELOGITIEtS200 cfM

FPM500 ctM

FPM

1

z

c.) Selection of all diflusers supplied by the samebranch duct should be made at approximatelythe same neck velocities in order to facilitatebalancing after installation.

d.) Recheck throw data from pages 6-10, sounddata from page 12 and pressure drop frompage 14 Readjust any sizes which appear outof harmony with the majority.

Neck velocity can be determined from CFM divided byneck area. Diffuser aspect ratio should be based onspace proportions and the throw in each direction.

elow 20 EXREMELY QUIET S0UND STUDIOSSPECIAL LABORATORIES

400 300

25 VERY QUIET CONCERT HALLS 500 45030 FAIRLY QUITT LABORATORIES, THEATRES, i()O

BOARD ROOMSbJU

35 PARTLY QUIEI HOTTL ROOMS, CLASS. 8OO 750ROOMS, PRIVATE OFFICTS

40 PARTLY LOUD 950 900

FIGURE I SELEGTI('N & PERFORMANCE I.WAY BLOW

A

lt

THR|oW Selection in rrost cases shouldthrow figurc indicated above.rcpresent readings taken as

I'i:iJ..i.FJi',,'i"l;J'ri.:l:i.ii'"Jlcorded with thc air travelins at 50 FPM.

be bused on the longerThe two fgures shown

follows: (a) the shorter

FIGURE I SELEGTIO]I & PERFORTA]IGE 2.WAY BLOW

A

A

2t

A

Itr-tIt-ItF-tIF-ItF:-l

A

23

FIGURE 1 SELECTION & PERFORTANGE 2.WAY BLOW

I

A

"+llllB 1ffiN]

24

Selection in ntost cases should be based on the longcrthrow figure indicated above. Thc two figures shownrepresent rcadings taken as follows: (a) the shorter

,f i:iil".J'i'liJii$"1;.",1^,:i':l,ii,i'"J:ocorded with thc air travelins at 50 FPM.

TOT CFM

TOT CFM

CFM SIDE

CFM/SIDE

THROW

FIGURE 1 SELEGTTON & PERFORMANCE 3-WAY BLOW

TOT CFM

CFMi SIDE

TOT CFMCFM SIDE

TOT. CFMCF M,,S I DE

THRO

CFM SIDE

CFM 'SIDE

TOT CFMCFM,, SIDE

THROTOT CFMCFM

'SI DE-IH RO

TOT CFMCFM SIDE

THROTOT CFM

98

5 t0TOT CFM

B

87

7-t3

TOT CFMCFM SIDE

15 t 6.u

FIGURE I SELEGTIOil & PERFORIf,AI{GE 4.WAY BLOW

TOT CFM

CFM SIDE

TOT CFM

TOT CFM

TOT CFM

CFM,'SIDE

TOT CFM

CFM SIDE

CFMiSIDE

CFM i SI DE

12tZl1.75

12 x 212.0

15rl81.875

l8 r 2l2.62

CFM'SIDE

CFM /SIDE

A

I IEIHI- e

41

Selection in nrost cascs should be based on thc longerthrow figure indicatcd above. The tw'o figLrrcs shownrcprcsent readings taken as follows: (a) thc shorter

dinrension represcnts thc distance at which thctraveling at 100 FPM; (b) the grcater throwcordcd with thc air travelins at 50 FPM.

alrIS

THROW

c\

FaoIJJ

Y(JlJz

1000

800

600

FIGURE 2 THROW GHARAGTERISTIGS

60 80 t00 7000 l0 000

TABLE 3

AREAS OFTRIANGLES AND

TRAPEZOTDS(scl. FT.,

TABLE 4

AREAS ('FSQUIRES ANDRECTANGLES

ll

Dmen-sion"X X x Y:3n 4yzn

.031 .O I 6

.o70

.t25 .063

.195

4Y2'Y

7Y2' o94 x.2at t4l L)

LOY2" .383 156 .188L2" 50 25 188 .23413y2" .635 .219 .281L5' .78 r 39 .250 .328 .375r6u 945 2Ar .375 438 .469LA" 113 .563 .313 .422 .50 547L9Y2" 1.32 .344 .469 .563 .625 -6562t" t-f,t 766 .375 516 625 703 75024u 2.OO r.00 438 609 .75 .859 .938 .98427" 2.53 r.27 .500 .703 .875 o2 t13 r20 1.2530" 3.13 1.56 .563 .797 1.OO33" 3.78 r.89 .625 .891 1.13

t7 I3l 1.42 150 1.55?? 1.50 1.64 t75 183 188

36' 45 2.25 688 .984 1.25 48 169 186 200 2.tl 2.r939" 5.2A 2.64 .75 1.O8 r.38 64 188 2.08 2.25 2.39 2.5042" 6.13 3.06 813 t.L7 1.50 80 2.06 2.30 2.50 2.67 z.At

Size 3 6 I 12" 15" 18" 21" 24" 21" 30" 33" 36"6 .1?5 25I 188 375 56

12" 25 50 75 0015" 313 625 ola 25 15618" 375 IJ 1.t25 50 1.875 2.2521" 438 87f l3l 75 219 2.62 30624" 50 100 150 200 250 300 3s0 40027" 563 I 121 169 2.25 281 3.375 394 450 50630" .625 r25 r,875 250 J.TJ 375 4 475 500 ).b25 6.2533" .688 I 37: 2.06 275 344 4.t21 481 550 619 6.87: 7.5636" l5 2.25 00 37s 450 525 6.00 675 750 J 90039" 813 I 621 244 5J 406 487 569 650 73r 8.125 894 9.7542 .875 175 2.625 350 4.375 5.25 6.125 700 7.875 875 9.625 10.50

AREAS (SO. FT.)

s5'bs\}bbs,ffilc40

TIURE 3 SOU]ID DATA

S)UND TEVEL f{C I{DEXTR)M S(UI{D POWER DATALtr-l0db RE 10-12 wATr.DAMPER FUttY f)PEI{

NECI( AREA IN SO. TT,

sfu9

30

25

20

1 000r00 150 200 300 400 500 600 800CFM

Table is based on 4-way. t()R 3-WAY ADf) 2 F()R 2.WAY ADD 2 F()R I-WAY ADt) I

FIGURE 4 TYPIGAL S(,UND P('WER SPEGTRA

CENTER FREQUENCY HZ

NC lndex is a sound ratrngbased on L10'tz!! and usinga 10db reduction in all octave bandsThe resulting room NC value for any application may vary from the NC lndex shown n Fig 3because the room NC value is affected by room absorption and system characieristics.

DB

50Jqt,u=P=

=trv===eEr

IVITH NC FROMFIGURE 3 ABO/E,sour{D P0WER (Llr)CAN BE OBTAINEDFROM FIG. 4 IilANY OF SIX BAIIDSsHolril.

125

I 7f, t- 800

1,,/"

7'v.Loc11

rI-

-

1-t/L / '47 l- /L 7 l I 11

I 600 7 7 I 7 / 4 I 7 / 7 2 7vL L /

ilcll{DEx 40

35

30 1{CINDEX

25

20

40

35

30

25

TABTE 5 AIR DETERTINATIO]I FAGTORS (AK)

SUPPLY AIR AREA FAGTORS (I()

CFM -

AIR DETERMINATI0N FACT0R (Ar)x AVERAGE VELOMETER READINc (FPM)*"Based on average of readings taken from center of each side with Alnor Velometer (2220 A Jet)

-

Using an Alnor Velometer (instrument for measuringair velocity in FPM, manufactured by Illinois TestingLaboratory) equipped with a 2200 A jet sensing tip,take readings in the centers of all active outer passages.To determine delivered CFM, average the readings,multiply by the air balancing factor as shown inTable 5.

l3

MB, MX {ECK AREA MI, MT, MP4w 3w 2w lw SIZE Sq. Ft. 4w 3w tu lw.107 0606 .25 .135 .128 .122 .ll8.r50 06 .375 .186 .180 .t72 .165.206 0612 .50 .240 .232 .22s .218.2r 0615 .625 .288 .282 .272 .2650621 .875 .382 .375 .365 .360

.107 .103

.150 .145

.206 .200

.23 .2t

.113

.160

.212

.25

.236 .218 .218 .220 0909 .56 .26s .257 .250 .240

.30 .28 .25 .25 0912 .75 .33s .328 .320 .313

.38 .36 .33 .34 0915 .938 .41 .396 .390 .385.M .42 .40 .42 0918 r.125 .48 .47 .4s .46.50 .48 .45 .48 0921 r.31 .s5 .54 .53 .53

.41

.50.60.68.t9

.43 .42

.52 .51

.62 .61

.7r .69

.81 .79

.40 .39 .38 .39 t2t2

.46 .M .42 .M l2l5

.58 .58 .54 .56 t2l8

.68 .66 .64 .66 l22l

.75 .73 .71 .7t 1224

.41.50

.60

.68

.7t

1.01.251.5t.752.0

.63 .62 .62

.70 .69 .69

.86 .84 .86

.97 ,95 .98

.58 .5s l5l5

.68 .70 l5l8l52lt524

.60 .59

.72 .70t.56 .64t.875 .722.t9 .882.5 1.0

.84 l8l8 2.25 .91 .88 .86

.92 l82l 2.62 1.05 1.01 .981.00 1824 3.0 Lls 1.15 t.r2.86 .84 .81.95 .92 .901.07 1.01 .98

.891.03I.L7

LlO 1.04 1.00 1.04t.25 l.l8 1.10 t.tz

1.22 ].t7 l.ls 1.201.38 1,33 1.29 1.36

2l2t 3.062124 g.s1.50 1.45 1.40 1.45 2424 4.0 1.58 t.52 1.47 1.55

%s(,)so

20

18

16

14

12

10

08

06

05

04

03

300

NECK VEL()CITY IN FPM

l4

=.1-:- : :l

i i: :::-r. t l.T- -I-r.::l

-t-

-tF,li- :::-tl i li - =l-

fl:1 ) t)

:rr lrjl rfi rt lrll l=r r;r:

-: ]::: jF rF :r ::;rt l- II L '-lt

Iili i-

t;-l i

-

lrl'-.rt l_ f rl f ]-r L: ]i I r)'i, l

-

=I '! I ,

:=tri ti-ii.- . l.r l T

-lI

, Jiril i .l

,-:I

--

Irl'I

I,l

rI l ,_ l -r , lt ..,-l-i

I

I :.l-t l'll'.il l

'f'Tit

l

'r-/

.i'

,L

.

'1, {. t r-lliU'Er

il r- ,i -i l.T

I

| .L

rr-T

j

Il

Ia

ll,rl

fiI'r-I

r-

;i lf

ll-fl

I

I

/l

I

P

Liiif.

Ii,

t

:

rI

;.;i.iL

-ilr 11:il

I

; I-i

rlr

-l+'i--T'lr it i i ti'i

li; -l

+itlI

I

l

.

t

lll

L

02

200

For types MB and MX, use 1.20 multiplier for Pt

500 600 800

Type MF, MB, MX, MS Diffusers Type MP Panel Diffusers

SIZE: XXXX (MS Diffuser Size)

CORE PATTERN: XX (See Page +)

SIZE:

CORE PATTERN:

MODEL:

BORDER:

XXXX

XX (See Page +)

M

F-OverlapX-Lay- I nT-Snap- I nS-SplineB-Bevel

BD- Damper825-1 Extractor with push-pull armE25-3 Extractor with wormgear operatorlE25-2 with external opera-tor is not suitable for seriesM diffusers)FL-Fusible link(use only with BD)

MODEL:

BORDER:

PANEL SIZE:

ACCESSOR I ES:

MP

X-Lay-l nT-Tile SizeS-Soline

XXXX (See Page 3)

BD- DamperE25-1 Extractor with push-pull arm825-3 Extractor with wormgear operator(E25-2 with external opera-tor is not suitable for seriesM diffusers)FL-Fusible link(use only with BD)

ACCESSOR IES:

Note: E25 will be shipped loose for f ield installation

EXAMPLE : O91 212-MF-E25

Note: MP Panel Diffuser consistsmounted in panelE25 will be shipped loose for field

of MS Diffuser

instailation

EXAMPLE: 1 21 542-MPX- 2424-BD

Connols-Air, Singapore (the "Company"), warrantsthat every product manufactured and sold by them anddescribed herein will be free from defects in material andworkmanship under normal use and service for a periodof one year after purchase. The Company's obligationunder this warranty shall be limited to replacing any suchproduct which proves to be defective in workmanship ormaterial under normal use and service within such period.Any improper use, including but not limited to, sub-stitution of parts not approved by the Company, neglect,accident or any alteration or repair by others in such amanner as in the Company's opinion materially and ad-versely affects the products, shall void this Warranty.

No person is authorized to assume for the Company any

other liability with respect to any product sold by theCompany, nor is any employee or representative authorizedto alter this warranty in any way or grant any other war-ranty, unless such change is authorized in writing by anofficer of the Company at its home office. The Companyshall have no liability whatsoever in any event for paymentof incidental or consequential damages, including withoutlimitation, installation or delay costs or damages for injuryto persons or property. Every claim under this warrantyshall be deemed waived unless submitted in writing, andreceived by the Company within thrty (30) days of thedate to which each claim relates, is discovered or shouldhave been discovered.

l5

AIR PATTERN TEST OF M SERIESDIFFUSER AT OUR IN-HOUSEAIR DISTRIBUTION LABORATORY

TESTS SHOW M SERIES DIFFUSERDOES NOT EXHIBIT AIR DUMPINGTO NECK VELOCITY OF 150 FTIMIN

cNNoLs-A (s) PfE LTD3-B Joo Koon CircleSingapore 629034Tel : (65) 6861 5253Fax: (65) 6861 9850E m ail : e nq u i ry@connols-ai r. co mWe bsite : http ://www. co n no ls-ai r. com

LEditionl Printed on March 1992