product brochure - smartair diffusion · product brochure lmc-ad : 102018 ... intense mixing at the...
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smartemp.com
®
PRODUCT BROCHURE
LMC-AD : 102018
LMC-ADLinear Multistream Ceiling Di�user
LMC-AD : 102018
The SMARTEMP® Linear Multistream Ceiling Diffuser,
type LMC-AD (figure 1), is a multi-nozzle linear slot
diffuser with adjustable discharge direction that can be
flush mounted in a ceiling or freely suspended (ie no
Coanda attachment to the ceiling required).
The diffuser's 1-to-6 linear slots house a plurality of
barrel nozzles, each with an adjustable guide vane,
delivering highly inductive discharge by breaking the
supply air stream up into a multitude of alternating air jets.
Each barrel nozzle is made of black polycarbonate
located between linear aluminium extrusions that are
anodised or powder coated. Each guide vane is readily
adjustable to any one of five discharge patterns (figure 2
- three 2-way blow examples shown) to change the
discharge angle from horizontal through diagonal to
vertical (figures 3 & 4). Two-way discharge is standard
(figures 3 & 4); one-way discharge is available as an
option (figure 5).
Intense mixing at the diffuser discharge face produces
high induction that strongly dilutes the supply air stream
with large quantities of room air. Rapid temperature
equalisation of the supply air stream with room air
occurs, preventing cold air dumping, thereby ensuring
uniform temperature distribution (no cold and draughty
or hot and stagnant spots) and high comfort levels in the
space. Heating performance is also improved.
The stable discharge characteristics of the diffuser over a
wide range of supply air temperatures and volume flow
rates make the LMC-AD suitable both for constant flow
and VAV systems, including low temperature air supply.
Linear Multistream Ceiling Di�user 1
LMC-AD
Slots
1
2
3
4
5
6
*Max based on 35 Pa Pt max (including side-entry connection box).
Volume flow rate*
∆T = -16 K ∆T = -12 K ∆T = -8 K 9-36 8-36 6-36
19-75 16-75 13-75
29-116 25-116 21-116
38-150 33-150 27-150
47-188 41-188 33-188
57-228 49-228 40-228
V [L/s/m] V [L/s/m] V [L/s/m]
V
DESCRIPTION
1 - Plenum Box
2 - Supply Air Diffuser
3 - Return Air Diffuser
4 - Expansion Bracket
5 - Joining Strip
6 - Corner piece
7 - End Flange1
2
3
4
5
6
7
Figure 1
Figure 6
Figure 3
Figure 5
Figure 4
CONSTRUCTION
Figure 2
DISCHARGE DIRECTION EXAMPLESWITH 2-WAY PATTERN
LMC-AD : 102018
Linear Multistream Ceiling Di�user 2
Direction A Direction C Direction E
*Check with local supplier. All clear air dimensions. If insulated, then external dimensions need to be increased accordingly.
Number of Slots (n) 131
48
27
81
149
149
259
76
55
109
224
224
387
104
83
137
249
249
4115
132
111
165
299
299
n28 • n+3
28 • n+20
28 • n-1
Wn+50
<3.6m/s
<3.6m/s
Width flangeless face Wn [mm]Width flanged face Wf [mm]
Width of diffuser throat Wt [mm]
Recommended internal plenum height A [mm]*Recommended internal plenum width B [mm]*
Recommended spigot dimension D [mm]* up to 1200 mm length
DIMENSIONS
LMC-AD : 102018
Linear Multistream Ceiling Di�user 3
Recommended spigot dimension D [mm]* up to 1500 mm length
5143
160
139
193
299
314
6171
188
167
221
314
354
Standard neck lengths: 1050, 1200, 1350, 1500 mm. Other lengths on request.Neck length (including screw heads) increases by 3.0 mm per end flange.
INSTALLATION WITHEXPANSION BRACKET
AD
B
45
Wt
INSTALLATION WITHCONNECTION BOX
30
40
25
Wf
Wn
Wt
n = 4
Wf
Wn Wn
Wf
Wt Wt
n = 1 n = 2
46
46
D+76
16FLANGE
TECHNICAL DATA
Products supplied may differ slightly from those described in this technical brochure due to on-going product development.
LMC-AD : 102018
Linear Multistream Ceiling Di�user 4
NO
TES
TO N
OM
OG
RA
M O
N P
AG
E 6
Com
men
ts /
Nom
ogra
mva
lid f
or:
Adj
ustm
ents
:
Hea
ting
valid
for
100%
hig
h-le
vel
retu
rn.
For
low
-leve
l re
turn
:∆T
max
.hea
ting
≈ (1
+ (L
RA
%)/1
00) •
∆Tm
ax, w
here
LR
A%
= %
low
-leve
l re
turn
.
Val
idfo
rdi
scha
rge
from
clo
sed
ceili
ng.
For
freel
y su
spen
ded
diffu
ser:
Hea
ting
∆Tm
ax.f
reely
sus
pend
ed≈
∆Tm
ax.h
eatin
g/ 2
Rec
omm
ende
d A
ir P
atte
rnS
ettin
gs:
For
H =
2 to
2.7
m:
A: 0
° to
-15°
dis
char
ge t
o th
e ho
rizon
tal.
For
H =
2.7
to 3
m:
B:0
° to
-30°
dis
char
ge t
o th
e ho
rizon
tal.
For
H =
3to
4m
: C
: ≈-4
5° d
isch
arge
to
the
horiz
onta
l.
For
H =
4 to
5 m
: D
: ≈ -6
0° d
isch
arge
to
the
horiz
onta
l.
Tota
l pre
ssur
e (P
t) is
incl
usive
of s
ide-
entry
con
nect
ion
box
pres
sure
loss
.
Dra
w a
line
verti
cally
dow
nth
e no
mog
ram
for
2-w
ay b
low
, or
cor
rect
for
1-w
ay b
low
.
For
heig
ht ≤
2.7
m s
elec
t 2.7
;oth
erw
ise
sele
ct h
eigh
t tw
ice
(onc
e in
the
grey
zon
e; o
nce
in th
e w
hite
zone
).
Cm
inis
eith
er t
he m
inim
um s
paci
ngbe
twee
n tw
o 2-
way
blo
w d
iffus
er r
ows
(hal
ve t
his
valu
e fo
r th
row
to w
alls
/ g
lazi
ng)
or t
he m
inim
um t
hrow
of a
1-w
ay
blow
diff
user
row
.
Cm
axis
eith
er t
he m
axim
um s
paci
ngbe
twee
n tw
o 2-
way
blo
wdi
ffuse
r ro
ws
(hal
ve t
his
valu
e fo
r th
row
to
wal
ls /
gla
zing
) or
the
max
imum
thr
ow o
f a 1
-w
ay b
low
diff
user
row
.A
ctive
Len
gth
Rat
io (
RLA
) is
the
ratio
of t
he a
ctive
len
gth
LAre
lativ
e to
the
room
leng
th L
. D
eter
min
e C
max
twic
e(o
nce
for
cool
ing
∆T;
once
for
disc
harg
e he
ight
)th
en s
elec
t the
low
erof
the
two
outp
uts.
Sel
ect d
esire
d co
mfo
rt le
vel
to d
eter
min
e m
inim
uman
d m
axim
um s
paci
ng o
r th
row
(C
min
& C
max
) and
min
imum
dis
char
ge h
eigh
t (H
min).
Hm
info
r di
scha
rge
from
clos
ed c
eilin
g.Fo
r fre
ely
susp
ende
d di
ffuse
r:H
min
.fre
ely s
uspe
nded
≈H
min•
1.1
Sou
nd p
ress
ure
leve
l LP
[NC
/m] i
s va
lid i
na
stan
dard
com
mer
cial
offi
ce o
nly
with
2.7
m to
3m
cei
ling.
2 9 5 7 6 8 3 4
0 to
-15°
0 to
-30°
≈ -4
5°
≈ -6
0°
Ther
mal
Com
fort
Gui
de:
ADPI
≥ 9
5%:
Prem
ium
com
fort
sed
enta
ry a
ctiv
ity, s
uch
as in
aud
itoria
.AD
PI ≥
90%
: H
igh
com
fort
nea
r-sed
enta
ry a
ctiv
ity, s
uch
as in
boa
rd ro
oms,
hig
h en
d of
fices
and
libr
arie
s.AD
PI ≥
80%
: G
ood
com
fort
nea
r-sed
enta
ry a
ctiv
ity, s
uch
as in
ope
n-pl
an o
ffice
s an
d m
eetin
g ro
oms.
ADPI
≥ 7
0%:
Stan
dard
com
fort
med
ium
act
ivity
, suc
h as
in tr
ansi
ent s
pace
s, re
tail
and
lobb
ies.
LMC-AD : 102018
Linear Multistream Ceiling Di�user 5
Layo
ut R
ecom
men
datio
ns:
≤ C/
8
≤ C/
8
C C/
2 C/
2
L
2-w
2-w
1-w
≤ C/
4
2-w
2-w
L A.1
Refe
r to
nom
ogra
ms f
or p
erfo
rman
ce d
ata.
Not
es:
• Sp
acin
g:
C min
≤ C
≤ C
max
C wal
ls = C
/2
• Ac
�ve
Leng
th R
a�o:
R LA =
LA /
L, w
here
L A ≥
0.1
• L
, and
L A =
Σ L
A.i
• Ai
r Pa�
ern:
2-w
: 2-w
ay b
low
1-w
: 1-w
ay b
low
L A.2
≤ C/
8
≤ C/
8
L ≤
C/4
L A.1
L A.2
C
1-w
1-w
1-w
LMC-AD : 102018
Linear Multistream Ceiling Di�user 6
REF
ER T
O N
OTE
S O
N P
AG
E 4
Not
es:
* Ba
sed
on 1
0 dB
room
abs
orp�
on.
1 Ai
r Dir
ec�o
n (fo
r hea
�ng)
: A ≈
0 to
-15°
; B ≈
0 to
-30°
; C ≈
-45°
; D ≈
-60°
Cool
ing
∆T [K
]
10
H =
2
5 m
15
30
ADPI
≥ 9
5%; ṽ
≤ 0
.20
m/s
; DR
≈ 20
% @
T=2
3°C:
20
H min
[m]
20
10
20
0.8
2
10
1
10
33
240 30
40
50
60
70
80
90
10
0
120
140
160
180
200
220
L W
L P*
L/s/
m
1 0.
6
-16
K
-12
K
-8 K
C max
[m]
2.
3
0.5
1 10
800
600
500
400
300
200
100
700 40
m3 /h
/m
24
40
50
9 25
35
Soun
d Po
wer
, LW
[dB(
A)/m
] So
und
Pres
sure
, LP [
NC/
m]*
2.4
2.2
2.1
LMC-
AD
20
10
ADPI
≥ 9
0%; ṽ
≤ 0
.25
m/s
; DR
≈ 20
% @
T=2
6°C:
ADPI
≥ 8
0%; ṽ
≤ 0
.29
m/s
; DR
≈ 30
% @
T=2
4°C:
ADPI
≥ 7
0%; ṽ
≤ 0
.33
m/s
; DR
≈ 30
% @
T=2
6°C:
5 4 2 3 1 6
Slot
s 6 5 4 2 1
+20
K
+16
K
+12
K
+8 K
+4 K
0 K
Hea�
ng
∆Tm
ax [
K]
[dB(
A)/m
] [N
C/m
] [P
a]
0.2
1
0.5
12
-8 K
-1
2 K
1 1 18
-16
K
5
5 10
5
C min
Tota
l Pre
ssur
e, P
t [Pa
]
10
5 1
5 4 3 2 1
[m]
0.3
13
10
10
60
30
40 5
0 27
5 3
m
4 m
5 m
2.7
m
H
= 2
m
3
P t
Cool
ing
1 2
4 9
3
Cool
ing
∆T =
6 20
30
0.8
2 20
30
30 40
≤2.7
H
[m] =
5
6 7
5
R LA =
0.1
0.
5 1.
0
2.6
2.4
2.3
2.7 2.8
2.6
2.5
2.9
3.0
2.8
2.7
≤2
5 ≥1
0
+1
L/s/
m2
A C D
2-w
1-w
2.65
Air P
a�er
n (2
-way
/1-w
ay)
2
25
3 4
35
2 0.
7 1
2.5
15
67
8
30
20
+18
K
+14
K
+10
K
+6 K
+2 K
B
Air D
irec�
on1
Quic
k se
lect
ion
guid
e. R
efer
to th
e on
line
sele
ctio
n to
ol fo
r det
aile
d se
lect
ions
.
LMC-AD : 102018
Linear Multistream Ceiling Di�user 7
EXAM
PLE:
LM
C-A
D-2
.1
Det
erm
ine
perfo
rman
ce p
aram
eter
s fo
r a ro
w o
fLM
C-A
D-2
.1(tw
o-sl
ot; o
ne-w
ay b
low
) ope
ratin
g at
67
L/s,
free
ly su
spen
ded
at 5
mhe
ight
,su
pplyi
ngap
prox
imat
ely
2L/
s/m
2to
a lib
rary
.Th
e su
m o
f the
diff
user
leng
ths
span
s 30
% o
f the
libr
ary
leng
th.
The
supp
ly-to
-room
tem
pera
ture
di
ffere
ntia
l whe
n co
olin
g is
-16
K.10
0% re
turn
air
is fr
om a
low
leve
l.
Sele
ct a
dou
ble
slot
(Slo
ts2)
.
5 m
dis
char
ge h
eigh
t req
uire
s th
e di
ffuse
r air
patte
rn to
be
set t
o D
(≈ -6
0° fr
om th
e ho
ri zon
tal).
Sele
ct ≤
2 L
/s/m
2sp
ecific
airf
low
, whi
chgi
ves
a m
axim
um h
eatin
g te
mpe
ratu
re d
iffer
entia
l (∆T
max
) of +
1 K,
valid
for d
isch
arge
from
a
clos
ed c
eilin
g an
d 10
0% h
igh-
leve
l ret
urn.
Fo
r 100
% lo
w-le
vel r
etur
n, ∆
T max
.hea
ting
≈ (1
+ (L
RA%
)/100
) x ∆
Tmax
≈ (1
+ (1
00/1
00))•
1 K
≈ +2
K.
As th
e di
ffuse
r is
freel
y-su
spen
ded,
∆T m
ax.f
reel
y su
spen
ded≈
∆Tm
ax.h
eatin
g/ 2
≈ +
1K.
(Thi
s is
not
suf
ficie
nt fo
r hea
ting.
Con
side
r usi
ng th
e Sm
arte
mp
HSC
-AD
if h
eatin
g is
requ
ired.
)
The
tota
l pre
ssur
e (P
t)is
27
Pa, i
nclu
sive
of s
ide-
entry
con
nect
ion
box
pres
sure
loss
.
To d
eter
min
e la
yout
reco
mm
enda
tions
in c
oolin
g m
ode,
sel
ect 1
-w (o
ne-w
ay b
low
)air
patte
rn.
Sele
ct 5
m d
isch
arge
hei
ght t
wic
e(o
nce
in th
e gr
ey z
one;
onc
e in
the
whi
te z
one)
.
Sele
ct -1
6K
cool
ing.
Sele
ct R
LA=
0.3
(ie 3
0% a
ctive
leng
th ra
tiofo
r30%
diff
user
spa
n ac
ross
the
libra
ryle
ngth
).Se
lect
-16
K co
olin
g an
d5
m d
isch
arge
hei
ght.
For a
libra
ry, s
elec
t AD
PI =
90%
. C
min
betw
een
two
diffu
ser r
ows
is 1
2m
(6 m
to w
alls
). H
min
free
ly s
uspe
nded
≈ Hm
in•
1.1
≈ 2.
65 •
1.1
≈ 2.
9m
.C
max
betw
een
two
diffu
ser r
ows
is 1
5m
(ie
the
low
er o
f 15
m fo
r -16
K c
oolin
g an
d 30
mfo
r5m
dis
char
ge h
eigh
t) or
7.5
m to
wal
ls.
The
A-w
eigh
ted
soun
d po
wer
leve
l (LW
) of t
he d
iffus
er is
33
dB(A
).As
this
is a
larg
e vo
lum
e lib
rary
(and
not
a 2
.7 to
3 m
cei
ling
heig
ht
offic
e) th
e so
und
pres
sure
leve
l (LP
) sho
uld
notb
e us
ed (i
e on
ly LW
shou
ld b
e us
edfo
r aco
ustic
al c
alcu
latio
ns).
1 2 3 4 5 6 7 8 9
ORDER DETAILS
LMC-___-____-__.___-S__-E__-___-___-___
PROFILE COLOUR:- RAL9003* (signal white).- RAL9005 (matte black).- RAL________(RAL colour of choice).
ACCESSORIES:- 0* - Diffuser only.- Kt - With uninsulated connection box clipped to diffuser throat.- Kn - With uninsulated connection box screwed to into diffuser neck.- KIt - With internally insulated connection box clipped to diffuser throat.- KIn - With internally insulated connection box screwed into diffuser neck.
SIDE PROFILE:- F* - With side flanges.- N - Flangeless.
FIXING :- 0* - Without accessories / by others.- EX - Expansion bracket.
AIR PATTERN & DIRECTION:- 2A* - 2-way horizontal, position A (0 to -15°).- 1A - 1-way horizontal, position A (0 to -15°).- 2B - 2-way horizontal, position B (0 to -30°).- 1B - 1-way horizontal, position B (0 to -30°).- 2C - 2-way diagonal, position C (≈ -45°).- 1C - 1-way diagonal, position C (≈ -45°).- 2D - 2-way vertical, position D (≈ -60°).- 1D - 1-way vertical, position D (≈ -60°).- 2E - 2-way vertical, position E (vertical).- 1E - 1-way vertical, position E (vertical).
DIFFUSER ENDS:- 0 - Without end flanges.- J - Without end flanges + 1 pair of joining strips.- 1 - 1 End flange + 1 pair of joining strips.- 2* - 2 End flanges.
NOMINAL LENGTH:- N1200 - neck length = 1200 mm.- F1195* - face length = 1195 mm.- F_____ - custom face length ≤ 1500 mm.
MODEL:- Linear Multistream Ceiling
NUMBER OF SLOTS:- 1, 2, 3, 4, 5, 6.- Other slots available on request.
Note: * Standard, if no type code entered
LMC-AD : 102018
Linear Multistream Ceiling Di�user 8
Products supplied may differ slightly from those described in thistechnical brochure due to on-going product development.
SUPPLY/RETURN:- AD* = Adjustable Direction- RA = Return Air
®
For additional information, please contact [email protected]
We strive to continually improve SMARTEMP products. Brochures and marketing material are subject to change without notice,
Applicable Patents and Trade Marks can be viewed at smartemp.com/patents
® SMARTEMP is a registered trade mark. © 2019.