Slot diffusers, Round duct diffusers

Transcription

04
Slot diffusers
176
Round duct diffusers
AIR DISPLACEMENT UNITS
SLOT DIFFUSERS,
ROUND DUCT DIFFUSERS
SWIRL DIFFUSERS,
VARIABLE SWIRL DIFFUSERS
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
VENTILATING GRILLES,
VENTILATING VALVES
SUPPLY AIR NOZZLES
Slot diffusers,
AIR FLOW
CONTROL UNITS
EXTERNAL ELEMENTS
Slot diffusers are designed for air supply in rooms with
floor to ceiling heights of 2.5 to 4 m. They are suitable
for supplying either cold or warm air, in particular in
applications where air conditioning comfort demands
are stringent. Due to their high induction rate and rapid
decrease of temperature difference, these diffusers are
also suitable for variable systems.
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
Round duct diffusers can be installed at various
locations within the duct network. They are suitable for
supplying either cold or warm air.
177
Overview
■■ Slot diffusers
■■ Round duct diffusers
Slot diffusers
Slot diffusers are designed for air supply
in rooms with floor to ceiling heights of
2.5 to 4 m. They are suitable for supplying
either cold or warm air, in particular in
applications where air conditioning comfort demands are stringent. Due to their
high induction rate and rapid decrease of
temperature difference, these diffusers
are also suitable for variable systems.
Round duct diffusers can be installed at
various locations within the duct network.
They are suitable for supplying either cold
or warm air.
LD-13
LD-14
LD-15
LD-18
■■ Nozzle diffusers
Nozzle diffusers LD-19 are designed for
supply of warm or cold air and can be
mounted in the wall or in the ceiling. Adjustable deflectors allow us to set different
directions of air discharge.
Nozzle diffusers LD-20 are designed to
supply low quantities of air on big window
surfaces to prevent condensation (ceiling
installation near windows) or for big
throws for cooling when wall installation
(Coanda effect).
■■ Panel design slot diffusers
A panel design slot diffuser consists of a
face plate and a plenum box. Cylindrical
air deflectors, equal to those in LD-13 and
LD-14 diffusers, are installed in the slots,
to allow continuous adjustment of discharged air direction within the 360° range.
On order, diverse plate designs and slot
patterns are available.
■■ Software: KLIMA ADE
LD and SKD Software:
• available calculation and graphical
display of air supply for slot diffusers
LD-13, LD-14 and LD-15
• available calculation of technical specifications for the application of wall- or
ceiling-mounted slot diffusers
• available calculation of ceiling-mounted multiple-diffuser configuration air
supply
• application of vertical or horizontal
slot diffuser air supply into the room,
depending on the mode of operation –
heating or cooling
• the package supports basic air supply
mode models for the SKD-13 round
duct diffuser
• available calculation of SKD-13 round
duct diffusers cooling mode: single-side and two-side horizontal supply and
alternating horizontal supply heating
mode: vertical air supply
Nozzle diffusers
LD-19
LD-20
Floor slot diffusers
LD-16N
Panel design slot diffusers
Software: Klima ADE
■■ Floor slot diffusers
LD-16N floor slot diffusers are a suitable
solution for swimming pools and similar
rooms with large glass surfaces and
windows. They are designed for installation in the floor. Warm air is supplied in the
upwards direction, towards the window.
LDP-14
SKD-13D
178
VENTILATING VALVES
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
Content
Slot diffusers LD-13, LD-14
180
Slot diffusers LD-15
195
Slot diffusers LD-17, LD-18
199
Nozzle diffusers LD-19
213
Nozzle diffusers LD-20
219
Floor slot diffusers LD-16N
230
Panel design slot diffusers LDP-13, LDP-14
232
234
Round duct diffusers SKD-13
234
SLOT DIFFUSERS,
180
SUPPLY AIR NOZZLES
Slot diffusers
SWIRL DIFFUSERS,
Page
RAL
9010
Element is intended to be built in
the wall.
Element is made of steel sheet.
Element is intended to be built in
the ceiling or in the wall.
Element is powder painted in standard RAL 9010 colour. Other desired
colour is to be specified in the order.
Element for air conditioning of rooms
with floor to ceiling heights room up
to 4 m.
Shady symbol means possibility of
optional material, surface protection,
motor version, …
Element for air conditioning of rooms
with floor to ceiling heights from 6 to
15 m.
Element is intended to be built in the
floor.
Element is suitable for the supply of
warm air (heating).
Element is suitable for the supply
of cool air (cooling).
M
Element allows regulation by electric
motor (Belimo electric motors).
F Element is intended for air filtration.
The filter of class … is built in.
EU...
CD The possibility of the automatic selection and calculation of the technical
characteristics of grilles and difusers in
regard to the given conditions with the
assistance of the Klima ADE program.
INOX
The element is made of stainless
sheet steel AISI 304.
179
AIR FLOW
CONTROL UNITS
St
Element is made of aluminium
profiles, aluminium sheet or
aluminium casting.
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
AI
EXTERNAL ELEMENTS
■■ Legend of symbols
Slot diffusers
Slot diffusers
■■ Slot diffusers LD-13, LD-14
Application
LD-13 and LD-14 slot diffusers are
designed for the supply of air in rooms
with floor to ceiling heights of 2.5 to 4 m
for supplying either cold or warm air, in
particular in applications where air
conditioning comfort demands are
stringent. Due to their high induction
rate and rapid decrease of temperature
difference, these diffusers are also
suitable for variable systems.
AI
RAL
9010
LD-13
F
9.4
1
F
5
9.4
46
2
3
fD
41
15
7
A
E
5
6
H1
H
Control schematic of the spigot
volume control damper
LD-13
8.5
60
41
B
4
8.5
Description
LD-13 and LD-14 slot diffusers are
CD
designed in 1, 2, 3 and 4-slot versions.
Diffuser face plate consists of anodised
aluminium sections with built-in cylindrical
deflectors made of plastics. Deflectors
allow continuos adjustment of discharged
air direction within the 360° range
as well as control of supply air flow rate.
The cylindrical deflectors also allow full
shutting of the diffuser. The slot diffuser
plenum box is made of galvanised sheet
steel and has a flow rate control damper
built in its inlet spigot, to allow fine adjustment of the desired air flow rate.
15
7
a
A
E
LD-14
F
4
9.4
LD-14
8.5
8
53
F
5
4
6
8.5
9.4
53
5
26
1
2
3
4
5
6
7
8
180
26
A
E
7
7
Plenum box
A
E
Inlet spigot
Volume control damper
Main section
Cylindrical deflector
Side lateral section
Connecting section
Outside insulation
6
Slot diffuser types
Single-slot (designation LD-13,14/1)
Two slots (designation LD-13,14/2)
Three-slots (designation LD-13,14/3)
Four-slots (designation LD-13,14/4)
LD-13/2
LD-14/1
LD-13/3
LD-14/2
LD-13/4
LD-14/3
LD-14/4
37.5
LD-14 O/ 2
53.5
50
41.5
72.5
107
142
LD-14 O/ 4
53.5
LD-13 O/ 4
SLOT DIFFUSERS,
LD-14 O/ 3
53.5
LD-13 O/ 3
96.5
LD-13 O/ 2
SWIRL DIFFUSERS,
53.5
LD-14 O/ 1
41.5
Narrow version
The narrow slot diffuser differs from the
conventional slot diffuser construction as
regards its mounting to the ceiling or wall.
The conventional slot diffuser has a
L-cross-section mounting sleeve which
remains visible and may, in certain applications, interfere with aesthetic requirements. The narrow design has eliminated
this deficiency as well as introduced
improved structural rigidity due to its
reinforced sleeve. The product is thus suitable for installation in cooling suspended
ceilings as well.
LD-13 O/ 1
41.5
Slot diffusers
LD-13 O, LD-14 O
41.5
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
•
•
•
•
LD-13/1
VENTILATING VALVES
Slot diffusers
187.5
142
LD-13, LD-14
SUPPLY AIR NOZZLES
LD-13 O, LD-14 O
No. of slots
Special orders
On customer’s request slot diffusers can
be made in other dimensions. End seals
and longitudinal sections are painted in
any RAL scale colour according to the
customer’s request. As standard, cylindrical deflectors are black or white, on the
customer’s request, they can be coloured
in any RAL scale colour. Non-standard
colours and extra components are to be
ordered separately.
H
H1
B
A
E
F
1
220
261
95
33
57.5
24.4
2
230
271
129
67
92
58.2
3
250
291
162
101
126.5
92.0
4
290
331
196
135
161.5
125.8
H
H1
B
A
E
F
1
233.5
287
106
44
69
35.3
2
253.5
307
150
89
115
80
3
293.5
347
195
133
161.5
124.7
4
318.5
372
240
178
206.5
169.4
AIR FLOW
CONTROL UNITS
LD-13
LD-13
No. of slots
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
LD-13 and LD-14 slot diffusers are available in standard lengths ranging from
L=300 to L=2000 mm, with a 100 mm
step. In cases where longer diffusers are
required, they can be joint together by
means of (rail-type) connecting plates.
Plenum boxes are also available in
standard lengths ranging from 300 mm to
2000 mm.
EXTERNAL ELEMENTS
Standard lenghts L
181
Slot diffusers
Number and diameter of inlet
spigots
L
300 do 1000
LD-13
LD-14
LD-13
LD-14
LD-13
LD-14
1 x 98
1 x 123
2 x 98
2 x 123
2 x 123
2 x 138
2
1 x 138
1 x 158
2 x 123
2 x 138
2 x 138
2 x 158
3
1 x 158
1 x 198
2 x 138
2 x 158
2 x 158
2 x 198
4
1 x 198
1 x 223
2 x 158
2 x 198
2 x 198
2 x 223
L/2
Number of
inlet spigots
Standard
length
Position of
spigots
1
300 – 1000
L/2
2
1100 – 1500
J = 300
2
1600 – 2000
J = 400
J
Cylindrical deflectors
Cylindrical deflectors are an important
components of a slot diffuser. They allow
adjustment of both air flow rate and
direction. Cylindrical deflectors are made of
plastics. As standard, they are black or
white.
End seals
End seals are components of the diffuser
face plate. They are available in two
designs:
• a
s an angle piece (E – on both ends,
ET – on one end only) or
• plates (F – on both ends, FT – on one
end only).
The connecting strip-section has no end
angle pieces or plates seals (designation T).
Joining diffusers together in
length and width
Joining in width (into diffusers with
multiple slots) requires special strip
sections, while joining in length requires
connecting plates (the total length of
combined diffusers is not limited).
182
300
Slot diffuser face plate designs
Slot diffuser face plates are made of
linear or angular ended sections, which
allow the diffusers to be joined at different
angles. Angular ended sections are not
fitted with air direction controls.
1600 do 2000
Number and diameter of inlet spigots
No. of slots
1
Position of inlet spigots
1100 do 1500
angle 90˚
300
L/2
J
VENTILATING VALVES
Slot diffusers
Fixing of the plenum box onto
LD-13, LD-14 diffusers
Fixing with spring clamps (S)
Fixing with a cross-member (Z)
Installation with
a threaded bar (R)
Installation with wire (R)
Installation with
suspension bracket (P)
Installation with special
fastening elements (R)
Installation with springs into ducts (N)
SWIRL DIFFUSERS,
Fixing with self-tapping
screws (U)
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
• With self-tapping screws (designation U)
• With spring clamps (designation S)
• With a cross-member (designation Z)
Installation methods
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
AIR FLOW
CONTROL UNITS
EXTERNAL ELEMENTS
SUPPLY AIR NOZZLES
SLOT DIFFUSERS,
• With a threaded bar (designation R)
• With a wire (designation R)
• With suspension brackets on the
plenum box (designation P)
• With special fixing elements
(designation R)
• With springs (designation N)
183
Slot diffusers
Types of air discharge
a
b
Standard
(left, right)
Standard
(right)
Discharge direction
Max. air flow rate
Min. air flow rate
LD-13
c
d
Standard
(left)
Standard
(vertical)
f
g
101˚
Discharge angle
Discharge direction
Max. air flow rate
Min. air flow rate
LD-14
e
Air jet angle 60°
(left, right)
Air jet angle 60°
(right)
Air jet angle 60°
(left)
Discharge angle
Slot diffuser with actuator controlled
discharge direction
Slot diffusers with actuator controlled
discharge direction are suitable for
summer-winter air supply applications.
The desired direction of air jet is achieved
by means of an electric actuator which
moves a slider. Manual adjustment is
therefore not necessary. Compared with
standard slot diffusers, air flow rate is
reduced by 50 %. There are two options
for the Belimo electric motors:
3
2
Top view
Pogled
z vrha
1
LH 24A-SR100 and LH-24A-MP100. The
first operates at 24V AC/DC, the second
within the range of 0-10V or 0-32V. Their
travel distance is 100 mm, for which 150
s is required.
Component Parts
1. Slot diffuser
2. Deflector
3. Electric actuator
In case the discharge angle is to be
adjustable by means of an electric
actuator (winter-summer application),
this requirement shall be specified
in the ordering form.
*
Motor version on customer’s request.
184
Every second row
1 Adjustment of deflectors for
warm air supply
Every second row
2 Adjustment of deflectors for
cold air supply
VENTILATING VALVES
Slot diffusers
Ordering key
LD-13/1/B/E/K/M/S/P/I/g L=1700
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
Length L=300, 400, 500, …, 2000 (single piece)
Type of air discharge (a, b, c, d, e, f, g)
I5 Thermal insulation (polyethylene), 5 mm thick, on the outside of the plenum box
I9 Sound and thermal insulation (from -40 °C to 105 °C), 9 mm thick, on the outside of the
plenum box (synthetic rubber based material)
SWIRL DIFFUSERS,
N Installation with spring clamps – without plenum box (LD-13 and LD-14 only)
P Installation of the plenum box with hangers
R Installation with brackets built in the basic section
SLOT DIFFUSERS,
Z Fixing of the diffuser to the plenum box with a cross-member
S Fixing of the diffuser to the plenum box with spring clamps
U Fixing of the diffuser to the plenum box with self-tapping screws
M Volume control damper
K Plenum box
End sealing on both ends
End sealing on one end
End plate on both ends
End plate on one end
Rail-type without end sealings and plates
E
ET
F
FT
T
SUPPLY AIR NOZZLES
B Black deflectors
W White deflectors
1 Number of slots
2
3
4
EXTERNAL ELEMENTS
LD-13 Slot diffuser
LD-14
LD-13 O Narrow slot diffuser
LD-14 O
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
AIR FLOW
CONTROL UNITS
Note:
• Please specify the deflector colour in your order.
• Standard eloxal colour of the aluminium section is the original aluminium colour. Other colours shall be specified in the order.
• For the LD-13 0 and LD-14 0 type, the following end seals are available: F, FT and T.
• When installing in cooling ceilings, consult the manufacturer.
• In the case the slot diffuser is ordered complete with plenum box, the air jet configuration is set as shown on the drawing on page 184.
• Versions with insulation on the inside of the plenum box are also available.
185
Slot diffusers
Wall mounted slot diffusers
LD-13S and LD-14S
4
1’
Application
Designed for installation in plasterboard walls with a thickness of
100 mm or more. These are used for the supply of air in rooms
with ceiling heights of 2.5 to 4m. Suitable for cooling as well as
for heating, especially in rooms with elevated comfort requirements. They may also be used to discharge the air from the
room, and enable a high level of induction.
1
Description
Inlet or outlet connection may be in the plenum box above the
ventilated room or on the other side of the wall. On the diffuser
side, the plenum box is sound-insulated, lowering the level of
noise emissions in the ventilated room.
Component parts
1. front chamber connection (KF)
1’.rear chamber connection (KB)
2. slot diffuser LD-13S or LD-14S
3. sound insulation
4. plenum box
2
3
Installation in the plasterboard
Plenum box
Despite its low height, it assures sufficient air distribution in
the direction from the plenum box connection to LD-13 or D-14
across the entire length of the diffuser. It can be installed in
plasterboard walls with a minimum thickness of 100 mm. Design
allows installation and placement on metal profile brackets of
internal plasterboard walls.
B1
B2
L
H2
Sound insulation
Sound insulation has enhanced absorption properties and
prevents the spreading of emissions from the duct network into
the ventilated room. The insulation placement effectively reduces
internal noise generation in the entire plenum box, particularly
on the location of the inlet jet through the connection.
Dimensions
H
Rear plenum box connection
Rear side connection allows air inlet and outlet through the
neighboring room. Due to the height of the connector according
to LD-13 o LD-14, the duct network can be placed above the
suspended ceiling.
M1
Front plenum box connection
Front plenum box connection allows air inlet and outlet above the
suspended ceiling of the ventilated room. This assures a certain
competitive advantage, as there is no need to adjust the duct
network to the diffuser placement.
B
186
H
(mm)
H1
(mm)
LD-13S/1
289
203
LD-14S/1
289
203
LD-13S/2
289
203
LD-14S/2
289
203
H2
(mm)
B
(mm)
B1
(mm)
B2
(mm)
L
(mm)
ΦD
(mm)
40
75
58
45
1000
98
74
75
58
45
1000
123
51
75
58
45
1000
138
96
75
58
45
1000
158
VENTILATING VALVES
Slot diffusers
Ordering key
LD-13S/1/B/E/K/I5 L =1000
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
Length
I9 Sound and thermal insulation (from -40 °C to 105 °C), 9 mm thick, on the outside of
the plenum box (synthetic rubber based material)
End plate on both ends
SLOT DIFFUSERS,
E
ET
F
FT
T
SWIRL DIFFUSERS,
KF Plenum box, front side connection
KB Plenum box, back side connection
B Black deflectors
W White deflectors
1 Number of slots
2
S For wall installation
LD-13 Slot diffuser type
LD-14
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
AIR FLOW
CONTROL UNITS
EXTERNAL ELEMENTS
SUPPLY AIR NOZZLES
Note:
187
Slot diffusers
Fast selection diagram:
LWA < 35 dB(A)
4
Technical specifications for one-slot
diffuser, per meter of lenght,
at horizontal discharge
Q(m³/h)
LWA (dB)
LD-13
0.0092
135
34
LD-14
0.0136
210
28
3
Število
rež
Nr.
of slots
A(m²)
2
1
LD-13
LD-14
100
300
1000
500
1200
Q(m3/hm)
Δtz (K)
ΔtL (K)
Δp (Pa)
LWA (dB(A))
vH1 (m/s)
A, B (m)
H1 (m)
188
Air flow rate to length
Horizontal distance to the wall
Room height
Throw distance (L=H1+x)
Air velocity at the throw
distance L
Temperature difference between the supply and room air
Difference between the core
and room air temperature
Pressure drop
Sound power level
Air velocity at the distance H1
Distance between diffusers, in
length and in width
Throw distance
H1
Q (m³/hm)
x (m)
H (m)
L (m)
VL (m/s)
A
x
L
V H1
ΔtH V L
ΔtL
L
L
A
L
x
x
H1
Definition of symbols
VL
ΔtL
V H1
ΔtH
VL
ΔtL
VENTILATING VALVES
Slot diffusers
Air velocity diagrams for LD-13, at different throw distances
One or two sided horizontal discharge
1.2
1.6
LD-13 / 1
LD-13 / 2
LD-13 / 3
LD-13 / 4
2
160
230
280
325
125
180
220
250
110
155
185
215
90 70 55
125 100
155
180
2.5
(m³/hm)
45
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
H1 (m)
1
LD-13 / 1
LD-13 / 2
LD-13 / 3
LD-13 / 4
160
230
280
325
125
180
220
250
110
155
185
215
90 70
125 100
155
180
55
45
SWIRL DIFFUSERS,
0.8
0.6
0.3
0.5
0.4
0.25
0.3
0.25
0.2
0.2
SLOT DIFFUSERS,
VL (m/s)
VH1(m/s)
0.4
0.15
0.15
4
5
7
10
2
2.5
3
L (m)
5
4
10
7
0.1
2.5 3
A (m)
2
Alternate sided horizontal discharge
H1 (m)
1.2
1.6
2
2.5
(m³/hm)
LD-13 / 1
LD-13 / 2
LD-13 / 3
LD-13 / 4
340
395
160
230
280
325
125
180
220
250
110 90 70
155 125 100
185 155
215 180
55
45
LD-13 / 1
LD-13 / 2
LD-13 / 3
LD-13 / 4
160
230
340 280
395 325
125
180
220
250
110
155
185
215
90 70
125 100
155
180
55
45
SUPPLY AIR NOZZLES
1
0.4
0.2
0.15
0.3
0.25
0.2
0.1
EXTERNAL ELEMENTS
0.5
0.3
0.25
VL (m/s)
0.15
0.1
2.5 3
A (m)
4
5
7
10
0.05
2
2.5
3
L (m)
4
5
7
10
AIR FLOW
CONTROL UNITS
2
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
VH1 (m/s)
0.7
189
Slot diffusers
Air velocity diagrams for LD-14, at different throw distances
One or two sided horizontal discharge
H1 (m)
1.6 2
-14 / 1
-14 / 2
4/1
4/2
VH1(m/s)
VH1(m/s)
1
1.6
(m³/hm)
2
1.2
LD-14 1.6
/1 2
LD-14 / 2
LD-14 / 1
LD-14 / 2
2.5
0. 4
0. 4
0.3
2
0.8
0.8
0.6
0.8
0.6
0.5
0.6
0.5
0.6
0.4
0.5
0.4
0.5
0.25
0.2
0.2
0.15
0. 2
0.15
2
0.8
0.30.25
0.25
0. 2
0.15
2.5 3
A (m)
2.5 3
A (m)
2.5
0.4
0.3
0.25
0.3
5 2
4
5
4
2
2.57 3
A (m)
7
3
2.5
A (m)
10 4
5
7
10
10 4
5
7
10
(m³/hm)
2.5
2.5
V L (m/s)
V L (m/s)
1.2
1 (m)
H1
2
V L (m/s)
V L (m/s)
1.6
0.15
0.1
0.1
0.4
0.3
0.25
0.3
0.2
0.25
0.2
0.15
2
2
2.5
2.5
3
3
0.15
0.1
4 2
0.1
L (m)
4 2
L (m)
5 2.5
5 2.5
3
7
3 7
L (m)
L (m)
4
10 5
7
4
10 5
7
AlternateH1sided
horizontal discharge
(m)
1.6
2
1.6
2
1H11.2
(m)
1.6
2
1 1.2
1.6
2
2
0.3
0.25
0.3
0.2
0.25
0.15
0.2
0.1
0.15
190
2.5
2.5
0.7
0.7
0.7
0.5
0.7
0.5
0.4
0.5
0.4
0.5
0.3
0.4
0.25
0.3
0.2
0.25
0.4
0.3
0.25
0.3
0.2
0.25
0.2
0.15
0.1
2.5 3
A (m)
2.5 3
A (m)
LD-14 / 1
LD-14 / 2
LD-14 / 1
LD-14 / 2
VL (m/s)
VL (m/s)
VH1 (m/s)
VH1(m/s)
(m³/hm)
2
2.5
2.5
VL (m/s)
VL (m/s)
m)
5 2
4
4
5
2
2.57 3
A (m)
7
3
2.5
A (m)
10 4
10 4
5
5
7
7
10
10
0.15
0.1
0.1
0.1
0.05
2
2
2.5
2.5
3
3
(m³/hm)
0.15
0.2
0.15
0.1
0.05
LD-14 / 1
LD-14 / 2
LD-14 / 1
LD-14 / 2
0.05
4 2
L (m)
0.05
4 2
L (m)
5 2.5
5 2.5
3
3 7
7
4
L (m)
4
L (m)
10 5
7
10 5
7
VENTILATING VALVES
Slot diffusers
Sound power level and pressure drop
55
100
50
45
50
)
50
50
Lw
25
20
30
25
10
8
6
20
4
3
3
2
1.5
15
300
400 500
700
1000
1
100
150
200
Correction factors applicable to LD-13/1
Type of
discharge
Flow rate
control
damper
400
500
700
1000
Vertical
Open
300
Q (m 3/h)
Q (m3/h)
Type of
discharge
Horizontal
Closed
Open
Closed
Flow rate
control
damper
Vertical
Open
200
Horizontal
Closed
Open
Closed
L=500
x1
x 1.44
x 0.87
x 1.34
L=500
x1
x 1.91
x 0.86
x 1.79
L=1000
x1
x 3.30
x 0.85
x 3.02
L=1000
x1
x 5.91
x 0.70
x 5.31
L=1500
x1
x 5.26
x 0.84
x 4.47
L=1500
x1
x 9.88
x 0.58
x 8.67
L=2000
x1
x 7.37
x 0.81
x 5.68
L=2000
x1
x 14.10
x 0.47
x 11.99
Example
Example
Q = 150 m³/h
L = 1000 mm
Δpt = 14 Pa (vertical; damper opened)
Δpt = 14 x 3.30 = 46.2 Pa (vertical; damper closed)
Δpt = 14 x 0.85 = 11.9 Pa (horizontal; damper opened)
Δpt = 14 x 3.02 = 42.3 Pa (horizontal; damper closed)
Q = 150 m³/h
L = 500 mm
LWA = 32 dB(A)
LWA = 30 dB(A)
SUPPLY AIR NOZZLES
150
EXTERNAL ELEMENTS
100
AIR FLOW
CONTROL UNITS
1
SLOT DIFFUSERS,
2 10
1.5
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
4
20
SWIRL DIFFUSERS,
pt (Pa)
(d
B(
A
A
10
8
6
))
30
Lw
p t (Pa)
35
35
20
15
60
40
A
40
55
45
(d
B(
A)
100
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
10
200
20 15 10
00 00 00
0
50
200
50
0
LD 13/2
00
15
00
20
00
LD 13/1
191
Slot diffusers
LD 13/4
100
60
50
50
70
55
50
100
45
40
50
45
35
)
(d
B(
A)
)
40
p t (Pa)
25
20
4
3
10
2
1.5
100
20
15
10
2
1.5
150
200
300
Q (m 3/h)
400 500
700
1000
Type of
discharge
Flow rate
control
damper
25
10
8
6
4
3
15
1
100
150
200
300
Q (m 3/h)
400 500
700
Type of
discharge
Horizontal
Closed
Open
Closed
Flow rate
control
damper
Vertical
Open
Horizontal
Closed
Open
Closed
L=500
x1
x 2.37
x 0.84
x 2.24
L=500
x1
x 3.08
x 0.70
x 2.91
L=1000
x1
x 8.52
x 0.56
x7.59
L=1000
x1
x 11.07
x 0.47
x 9.87
L=1500
x1
x 14.50
x 0.32
x 12.86
L=1500
x1
x 18.85
x 0.27
x 16.72
L=2000
x1
x 20.82
x 0.18
x 18.29
L=2000
x1
x 27.07
x 0.15
x 23.78
Example
Example
Q = 300 m³/h
L = 1000 mm
Q = 300 m³/h
L = 500 mm
LWA = 29 dB(A)
LWA = 33 dB(A)
192
1000
Vertical
Open
30
A
(d
A
30
10
8
6
1
20
Lw
B(
A)
35
Lw
p t (Pa)
20
00
200
10
75
20 15
00 00
200
10
20 15
00
00 00
50
0
50
0
LD 13/3
VENTILATING VALVES
Slot diffusers
p t (Pa)
30
10
8
6
4
3
2
2
1.5
200
300
Q (m 3/h)
400 500
700
1000
Type of
discharge
Flow rate
control
damper
100
150
200
Type of
discharge
Horizontal
Closed
1
20
15
300
Q (m 3/h)
400 500
700
1000
Vertical
Open
40
35
25
4
3
15
150
(d
6
20
100
A
30
1.5
1
Lw
20
10
8
25
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
40
00
15
00
20
45
)
A)
B(
35
20
50
50
45
SWIRL DIFFUSERS,
(dB
00
10
Open
Closed
Flow rate
control
damper
Vertical
Open
A
Lw
100
50
(A
50
Horizontal
Closed
Open
Closed
x1
x 1.81
x 0.76
x 1.31
L=500
x1
x 2.11
x 0.53
x 1.59
x1
x 3.83
x 0.42
x 3.23
L=1000
x1
x 8.84
x 0.29
x 7.96
L=1500
x1
x 5.80
x 0.28
x 5.11
L=1500
x1
x 15.36
x 0.20
x 14.14
L=2000
x1
x 7.87
x 0.19
x 7.07
L=2000
x1
x 22.32
x 0.14
x 20.70
Example
Q = 300 m³/h
L = 1000 mm
Q = 300 m³/h
L = 500 mm
LWA = 38 dB(A)
LWA = 36 dB(A)
AIR FLOW
CONTROL UNITS
Example
EXTERNAL ELEMENTS
L=500
L=1000
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
p t (Pa)
))
200
00
15
00
0
2
SLOT DIFFUSERS,
100
10
SUPPLY AIR NOZZLES
00
5
200
0
LD 14/2
00
50
LD 14/1
193
Slot diffusers
LD 14/4
50
0
50
0
LD 14/3
200
200
100
100
Lw
p t (Pa)
20
A
(d
A
B(
))
40
45
00
10
50
35
00
15
00
20
30
25
10
8
6
20
4
3
15
2
100
150
200
300
Q (m 3/h)
400 500
700
1000
Type of
discharge
Flow rate
control
damper
A
Lw
(dB
35
30
00
15
25
10
8
6
5
4
3
00
20
20
15
1
100
150
200
300
Q (m 3/h)
400
500
700
Horizontal
Closed
Open
Closed
Type of
discharge
Flow rate
control
damper
Vertical
1000
Open
Horizontal
Closed
Open
Closed
L=500
x1
x 2.41
x 0.33
x 1.87
L=500
x1
x 3.14
x 0.28
x 2.43
L=1000
x1
x 13.86
x 0.19
x 12.69
L=1000
x1
x 18.02
x 0.15
x 16.50
L=1500
x1
x 24.92
x 0.16
x 23.17
L=1500
x1
x 32.34
x 0.13
x 28.12
L=2000
x1
x 36.76
x 0.13
x 31.33
L=2000
x1
x 47.79
x 0.10
x 39.63
Example
Example
Q = 600 m³/h
L = 1000 mm
Q = 600 m³/h
L = 500 mm
LWA = 38 dB(A)
LWA = 36 dB(A)
194
00
10
)
Vertical
Open
)
(A
20
2
1.5
1.5
1
40
50
p t (Pa)
50
VENTILATING VALVES
Slot diffusers
■■ Slot diffuser LD-15
1
300, 400, 500, 600, 700, 800,
900, 1000
2
1100, 1200, 1300, 1400, 1500,
1600, 1700, 1800, 1900, 2000
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
147
Standard lengths (L)
60
SLOT DIFFUSERS,
80
SWIRL DIFFUSERS,
CD
205
No. of spigots
RAL
9010
Description
LD-15 slot diffuser is of a one-slot construction. The diffuser face plate consists of aluminium sections with built-in
cylindrical deflectors made of recycled
plastics. Individually adjustable
deflectors allow continuous adjustment of
discharge angle within the 360° range,
as well as adjustment of air flow rate. The
diffuser air flow can be completely shut
by means of the cylindrical deflectors. The
plenum box is made of galvanised sheet
steel.
AI
f78
Application
Slot diffuser LD-15 is designed to supply
air in rooms with floor to ceiling heights
from 2.5 to 4 m. They are primarily designed for the supply of cold air in applications with high comfort demands.
2
The positions of inlet spigots are equal to
those of LD-13 and LD-14 slot diffusers.
See drawing and table on page 182.
4
7.5
1
2
3
4
SUPPLY AIR NOZZLES
3
Plenum box
Inlet spigot
Main section
Cylindrical air deflector
15
Installation openings: 15 x L (diffuser length)
EXTERNAL ELEMENTS
Cylindrical air deflectors
Cylindrical deflectors are the most important components of a slot diffuser. They
allow free adjustment of the air flow rate.
41
Slot diffuser face plates are made of linear or angular ended sections, which allow
the diffusers to be joined at different
angles. Angular ended sections are not
fitted with air direction controls.
1
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
AIR FLOW
CONTROL UNITS
Joining slot diffusers together in length
Sections can be joint together by means
of connecting plates. Total length of so
joint sections is not limited.
Joining slot diffusers
together in length
195
Slot diffusers
Fixing of the plenum box onto a
LD-15 slot diffuser
• W
ith self-tapping screws (designation U)
• With spring clamps (designation S)
• Installation with suspension brackets on
the plenum box (designation P)
• Instalaltion with suspension brackets
on the main section (designation R)
Installation with suspension brackets
on the plenum box (P)
Fixing of the diffuser to the plenum box
with self-tapping screws (U)
Installations with suspension bracket on the main section (R)
Ordering key
LD-15/B/K/M/S/P/I L=1500
Length L=300, 400, 500, 600 …, 2000 (single piece)
I5 Thermal insulation (polyethylene), 5 mm thick, on the outside of
the plenum box.
I9 Sound and thermal insulation (from -40 °C to 105 °C), 9 mm thick,
on the outside of the plenum box (synthetic rubber based material).
I19 Sound and thermal insulation (from -40 °C to 105 °C), 19 mm
thick, on the outside of the plenum box (synthetic rubber based
material).
P Installation of the diffuser with suspension brackets on the plenum
box
R Installation with suspension brackets on the main section
S
U
M
K
B
W
Fixing of the diffuser to the plenum box with a spring clamp
Fixing of the diffuser to the plenum box with self-tapping screws
Plenum box
Black deflectors
White deflectors
Note:
196
Fixing of the diffuser to the plenum box
with a spring clamps (S)
Technical data
VENTILATING VALVES
Slot diffusers
Fast selection diagram
Free surface, per 1 m of length:
Aef=0.004559 m².
L=2000
Air flow rate per 1 m of length:
Q=20-70 m³/hm.
L WA<35 dB(A)
L=1000
L WA35-45 dB(A)
L= 500
50
100
150
200
250
SWIRL DIFFUSERS,
Q (m³/hm)
Q (m3/h)
Air velocity diagrams, at different throw distances
One or two sided horizontal discharge:
1.6
2
LD-15 / 1
160 125 110
90
70
55
2.5
(m³/hm)
45
LD-15 / 1
160 125
110
90
70
55
(m³/hm)
45
0.8
0.5
0.3
VL (m/s)
VH1(m/s)
0.6
0.4
0.25
0.2
0.4
0.3
0.25
0.2
0.15
SLOT DIFFUSERS,
H1 (m)
1 1.2
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
L=1500
2
2.5
3
A (m)
4
7
5
0.1
10
2
2.5
3
L (m)
7
5
4
SUPPLY AIR NOZZLES
0.15
10
H1 (m)
1 1.2
1.6
2
LD-15 / 1
160 125 110
90
70
55
45
2.5
(m³/hm)
LD-15 / 1
160 125 110
90
4
L (m)
5
70
55
(m³/hm)
45
EXTERNAL ELEMENTS
Alternate sided horizontal discharge:
0.7
0.4
0.2
0.3
0.25
0.2
VL (m/s)
0.1
0.15
0.1
2
2.5
3
A (m)
4
5
7
10
0.05
2
2.5
3
7
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
VH1(m/s)
0.15
AIR FLOW
CONTROL UNITS
0.5
0.25
10
197
Slot diffusers
0
50
200
55
100
00
10
00
15
00
10
50
50
p t ( P a)
(
L wa
(A )
dB
45
)
40
20
35
30
25
10
20
6
15
4
3
2
1.5
1
10
10
20
30
40 50 60
80 100
150 200 250
Q (m3/hm)
ΔPt correction (in Pa) in cases of
vertical discharge
Q (m³/h)
100
150
α=45˚
200
α=90˚
100
150
200
100
150
200
L=500
Data in the diagram
+5
+7
+10
+15
+32
+35
L=1000
Data in the diagram
+10
+12
+15
+33
+62
+100
L=1500
Data in the diagram
+4
+4
+8
+32
+63
+106
L=2000
Data in the diagram
+1
+2
+3
+27
+55
+81
α
α=0˚
α = 0˚ Control damper in the inlet spigot is fully opened
α = 45˚Control damper in the inlet spigot is half opened
α = 90˚Control damper in the inlet spigot is fully closed
ΔPt correction (in Pa) in cases of
inclined discharge
Q (m³/h)
100
150
α=45˚
200
100
150
200
100
150
200
L=500
Data in the diagram
+5
+7
+5
+12
+28
+60
L=1000
Data in the diagram
+8
+25
+33
+29
+66
+116
L=1500
Data in the diagram
+4
+11
+14
+29
+63
+101
L=2000
Data in the diagram
+1
+5
+7
+23
+52
+87
α = 0˚ Control damper in the inlet spigot is fully opened
198
α=90˚
α
α=0˚
VENTILATING VALVES
Slot diffusers
■■ Slot diffusers LD-17, LD-18
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
Application
Slot diffusers LD-17 and LD-18 are
designed for supply of cold or warm air in
rooms with a height between 2.5 m and 4
m. They allow easy setting of air deflectors
for different modes of operation and can
be mounted to ceiling or wall.
SLOT DIFFUSERS,
SWIRL DIFFUSERS,
Description
LD-17 and LD-18 slot diffusers are designed in 1, 2, 3 and 4-slot versions. The
unit’s front consists of anodised aluminium profiles (on customer’s request, these
can be powder painted in RAL 9010 or
another colour). The individually adjustable air deflectors are made of plastic in
white (RAL 9010) or black (RAL 9005)
colour).Plenum box is made of galvanised sheet steel. Slot diffusers LD-17 and
LD-18 are made in standard lengths: from
200 up to 2000 mm with a 100 mm step
(any length available upon request).
Nominal air volume per 1 m of slot:
60
2
7
6
A
F
4
1
SUPPLY AIR NOZZLES
B
8
43
H
5
H1
b
18
E
43
25
EXTERNAL ELEMENTS
ØD
3
H2
1. Plenum box
2. Inlet spigot
3. Volume control damper
4. Side section
5. Cylindrical deflector
6. Intermediate section
7. Connecting bar
8. Insulation (entire outside surface of
the plenum box)
LD-17 – 150 m³/h
LD-18 – 200 m³/h
(Δpt = 30 Pa, NR = 35 dB)
No. of slots
F
E
B
H
H1
H2
1
45.5
34.5
65
107
220
263
203.5
2
78.5
67.5
98
139
230
273
213.5
3
111.5
100.5
131
172
250
293
233.5
4
144.5
133.5
164
205
290
333
273.5
A
F
E
B
H
H1
H2
1
57.0
46.0
76.5
118
233
276
216.5
2
101.0
90.5
121.0
162
253
296
236.5
3
146.0
135.0
165.5
207
293
336
276.5
4
190.5
179.5
210.0
251
318
361
301.5
b=26.5
No. of slots
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
LD-18
A
AIR FLOW
CONTROL UNITS
LD-17 b=15
199
Slot diffusers
Number and diameter of inlet
spigots
Number
of slots
1100 to1500
1600 to 2000
Number and diameter of inlet spigots
LD-17
LD-18
LD-17
LD-18
LD-17
LD-18
1
1x98
1x123
2x98
2x123
2x123
2x138
2
1x138
1x158
2x123
2x138
2x138
2x158
3
1x158
1x198
2x138
2x158
2x158
2x198
4
1x198
1x223
2x158
2x198
2x198
2x223
J
L/2
L/2
B
J
Position of inlet
spigots
1
300-1000
L/2
2
1100-1500
J=300
2
1600-2000
J=400
300
300
Slot diffuser face plates are made of
linear or angular ended sections, which
allow the diffusers to be joined at
different angles.
°
90
Joining diffusers together
in length
Joining in length requires connecting plates (the total length of combined diffusers
is not limited).
End seals
End seals are components of the diffuser
face plate. They are available in two
designs:
• as an angle piece (E – on both ends,
ET – on one end only) or
• plates (F – on both ends, FT – on one
end only).
The connecting strip-section has no end
anglepieces or plates seals (designation T).
200
60
43
Standard length
300 to 1000
φD
H2
H
H1
Number
of spigots
L
Fixing of the plenum box onto
LD-17, LD-18 diffusers
Fixing with self-tapping screws (U)
Fixing with spring clamps (S)
Fixing with a cross-member (Z)
Installation with a cross member without plenum box (N)
Installation with hangers (P)
SLOT DIFFUSERS,
SWIRL DIFFUSERS,
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
VENTILATING VALVES
Slot diffusers
SUPPLY AIR NOZZLES
Types of air discharges
Horizontal – cooling
AIR FLOW
CONTROL UNITS
EXTERNAL ELEMENTS
Vertical – heating
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
Different settings of the two slot model (similar combinations are possible also for diffusers with more slots).
201
Slot diffusers
Ordering key
LD-17/1/B/E/K/M/S/P I5 L=1000 (length L=200, 300, …, 2000)
I9 Sound and thermal insulation (from -40 °C to 105 °C), 9 mm thick, on the outside of the plenum box
(synthetic rubber based material)
N Diffuser installation with a cross-member without plenum box
S Fixing of the diffuser to the plenum box with spring clamps
U Fixing of the diffuser to the plenum box with self-tapping screws
K Plenum box
E
ET
F
FT
T
End plate on both end
B Black deflectors
W White deflectors
1 Number of slots
2
3
4
LD-17 Slot diffuser type
LD-18
Note:
Quick selection diagram: LWA < 35 dB(A)
LD-18
4
LD-17
Nr.
of slots
število
rež
3
2
1
100
300
500
Q (m3/hm)
202
1000
Sound power level, pressure drop and throw distances
LD-17 horizontal discharge
LD-17/2 L=500 mm
LD-17/2 L=1000 mm
LD-17/2 L=1500 mm
LD-17/2 L=2000 mm
LD-17/3 L=500 mm
LD-17/3 L=1000 mm
LD-17/3 L=1500 mm
LD-17/3 L=2000 mm
55.6
83.3
111.1
138.9
166.7
194.4
222.2
250.0
277.8
333.3
150
200
300
400
500
600
700
800
900
1000
1200
[dB (A)]
32
47
[Pa]
13
42
L0.2
[m]
5.6
6.6
Lmin
[m]
12.5
>15
LWA
[dB (A)]
27
35
43
50
Δpt
[Pa]
8
27
56
95
L0.2
[m]
6
6.5
6.7
6.8
Lmin
[m]
12
>15
>15
>15
LWA
[dB (A)]
<25
29
34
40
50
Δpt
[Pa]
5
16
32
52
99
L0.2
[m]
5.5
6.1
6.5
6.6
6.8
Lmin
[m]
4
12.5
>15
>15
>15
LWA
[dB (A)]
<25
32
36
43
49
Δpt
[Pa]
2
3
6
11
19
L0.2
[m]
5.8
6.1
6.5
6.7
6.8
>15
>15
45
50
Lmin
[m]
6.5
12.5
13
LWA
[dB (A)]
<25
34
42
50
Δpt
[Pa]
3
11
22
36
L0.2
[m]
5
5.4
5.7
5.8
Lmin
[m]
11.5
14
>15
>15
LWA
[dB (A)]
27
30
36
Δpt
[Pa]
7
14
22
48
80
L0.2
[m]
5.3
5.4
5.5
5.7
5.8
Lmin
[m]
8
13.2
13.4
>15
>15
SLOT DIFFUSERS,
LWA
Δpt
SWIRL DIFFUSERS,
41.7
100
LD-17/1 L=2000 mm
27.8
50
LWA
[dB (A)]
26
30
36
42
46
52
Δpt
[Pa]
8
13
28
44
65
84
L0.2
[m]
5.1
5.4
5.5
5.6
5.8
5.8
Lmin
[m]
5.7
13.3
13.5
>15
>15
>15
LWA
[dB (A)]
26
32
36
41
44
48
51
Δpt
[Pa]
2
4
7
10
13
18
22
L0.2
[m]
5.2
5.4
5.5
5.6
5.7
5.7
5.8
Lmin
[m]
7.5
13.2
13.4
>15
>15
>15
>15
LWA
[dB (A)]
45
54
50
50
54
17
30
37
Δpt
[Pa]
5
12
20
L0.2
[m]
8
8.5
8.7
9
Lmin
[m]
9
10.5
11.2
13.5
LWA
[dB (A)]
<25
29
34
42
50
Δpt
[Pa]
3
8
14
32
54
L0.2
[m]
7.7
7.9
8
8.5
8.8
Lmin
[m]
6.4
6.9
9
11
12
LWA
[dB (A)]
28
35
42
48
53
Δpt
[Pa]
8
19
34
52
79
L0.2
[m]
7.8
8.2
8.5
8.7
8.7
Lmin
[m]
7.5
9.5
10.8
11.7
12.3
LWA
[dB (A)]
31
36
41
46
SUPPLY AIR NOZZLES
LD-17/1 L=1500 mm
13.9
EXTERNAL ELEMENTS
LD-17/1 L=1000 mm
[l/s]
[m³/h)
AIR FLOW
CONTROL UNITS
LD-17/1 L=500 mm
Q
Δpt
[Pa]
2
4
6
8
12
L0.2
[m]
7.9
8.1
8.4
8.5
8.6
9
Lmin
[m]
7.7
9.6
10.5
11
11.9
12
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
Type
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
VENTILATING VALVES
Slot diffusers
203
Slot diffusers
Type
LD-17/4 L=500 mm
LD-17/4 L=1000 mm
LD-17/4 L=1500 mm
LD-17/4 L=2000 mm
Q
[l/s]
13.9
27.8
41.7
55.6
83.3
111.1
138.9
166.7
194.4
222.2
250.0
277.8
333.3
[m³/h)
50
500
600
700
800
900
1000
1200
53
60
90
100
150
200
300
400
LWA
[dB (A)]
25
32
40
51
55
Δpt
[Pa]
3
7
12
29
50
L0.2
[m]
7.2
7.5
7.6
8
8.1
Lmin
[m]
8.2
9
9.5
10.5
11.2
LWA
[dB (A)]
35
38
46
Δpt
[Pa]
9
21
38
56
L0.2
[m]
7.5
7.6
7.7
7.9
8
Lmin
[m]
8.3
9
9.5
10.5
10.5
LWA
[dB (A)]
32
38
44
48
52
60
Δpt
[Pa]
10
19
30
44
60
80
L0.2
[m]
7.2
7.5
7.6
7.8
7.9
8
Lmin
[m]
7.5
8.7
9.5
9.8
10.2
10.4
LWA
[dB (A)]
34
38
42
45
49
52
56
60
Δpt
[Pa]
3
5
7
9
12
17
23
33
L0.2
[m]
7.4
7.5
7.6
7.8
7.8
7.8
7.9
8.3
Lmin
[m]
8.2
8.6
9.2
9.5
9.7
10.2
10.5
11.3
LWA
Dpt
L0.2
Lmin
Conditions for Lmin:
Q=600 m³/h
L=1000 mm
Room height:
Occupied zone height:
Room temperature:
Supply temperature:
A-weighted sound power level
Total pressure drop calculated to normal conditions
Isothermal throw distance of supply air jet, when its velocity drops down to 0.2 m/s
Minimum distance between diffusers, that the jet velocity is less than or equal to 0.2 m/s
H=2.8 m
1.8 m
24 °C
DT= -6 K
LD-17 vertical discharge
Type
LD-17/1 L=500 mm
LD-17/1 L=1000 mm
LD-17/1 L=1500 mm
LD-17/1 L=2000 mm
LD-17/2 L=500 mm
LD-17/2 L=1000 mm
204
Q
[l/s]
13.9
27.8
41.7
55.6
83.3
111.1
138.9
166.7
194.4
222.2
250.0
277.8
333.3
150
200
300
400
500
600
700
800
900
1000
1200
43
50
68
[m³/h)
50
100
LWA
[dB (A)]
32
47
Δpt
[Pa]
17
68
L0.2 (+10K)
[m]
2.4
4.8
LWA
[dB (A)]
27
35
Δpt
[Pa]
4
17
39
L0.2 (+10K)
[m]
1
2.4
3.5
5
LWA
[dB (A)]
<25
29
34
40
50
Δpt
[Pa]
2
8
17
30
68
L0.2 (+10K)
[m]
0.9
1.5
2.3
3.3
4.7
LWA
[dB (A)]
<25
32
36
43
49
Δpt
[Pa]
4
10
17
39
68
3.8
4.8
L0.2 (+10K)
[m]
LWA
[dB (A)]
0.8
1.8
2.4
25
35
43
51
Δpt
[Pa]
4
17
39
68
L0.2 (+10K)
[m]
1.6
3
4
4.5
LWA
[dB (A)]
28
31
37
46
51
Δpt
[Pa]
4
10
17
39
68
L0.2 (+10K)
[m]
1.6
2.6
3
4.2
4.5
LD-17/3 L=1000 mm
LD-17/3 L=1500 mm
LD-17/3 L=2000 mm
LD-17/4 L=500 mm
LD-17/4 L=1000 mm
LD-17/4 L=1500 mm
LD-17/4 L=2000 mm
41.7
55.6
83.3
111.1
138.9
166.7
194.4
222.2
250.0
277.8
333.3
[m³/h)
50
100
150
200
300
400
500
600
700
800
900
1000
1200
26
30
36
42
46
52
61
LWA
[dB (A)]
Δpt
[Pa]
4
8
17
30
48
68
L0.2 (+10K)
[m]
1.6
2.5
3.2
3.6
4
4.5
LWA
[dB (A)]
26
32
36
41
44
48
51
Δpt
[Pa]
4
10
17
27
39
52
68
L0.2 (+10K)
[m]
1.8
2.5
3.1
3.5
3.8
4.3
4.5
LWA
[dB (A)]
31
38
46
55
Δpt
[Pa]
8
17
30
68
L0.2 (+10K)
[m]
3.1
4.2
5.5
7.5
LWA
[dB (A)]
31
36
44
52
Δpt
[Pa]
4
8
17
30
L0.2 (+10K)
[m]
1.9
3.1
4.2
5.5
LWA
[dB (A)]
30
37
44
50
55
Δpt
[Pa]
3
8
14
21
30
L0.2 (+10K)
[m]
1.5
2.9
3.8
4.8
5.5
LWA
[dB (A)]
32
37
42
47
51
55
Δpt
[Pa]
4
8
12
17
23
30
1.9
3.1
3.8
4.3
5
5.5
53
57
54
61
L0.2 (+10K)
[m]
LWA
[dB (A)]
27
34
42
Δpt
[Pa]
4
10
17
39
68
L0.2 (+10K)
[m]
3.1
4.3
5.2
6.8
7.7
LWA
[dB (A)]
36
39
47
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
27.8
SWIRL DIFFUSERS,
LD-17/3 L=500 mm
13.9
SLOT DIFFUSERS,
LD-17/2 L=2000 mm
[l/s]
Δpt
[Pa]
4
10
17
27
39
L0.2 (+10K)
[m]
3
4.4
5.2
6.1
6.7
LWA
[dB (A)]
33
39
45
49
53
61
Δpt
[Pa]
4
8
12
17
23
30
L0.2 (+10K)
[m]
2.9
4.1
4.8
5.2
5.8
6.2
LWA
[dB (A)]
35
39
43
46
50
53
57
Δpt
[Pa]
4
7
10
13
17
22
27
39
L0.2 (+10K)
[m]
3.1
4
4.3
4.8
5.3
5.8
6.1
6.8
AIR FLOW
CONTROL UNITS
EXTERNAL ELEMENTS
Isothermal throw distance of supply air jet with temperature +10K,
when its velocity drops down to 0.2 m/s
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
LWA
Dpt
L0.2 (+10 °C)
LD-17/2 L=1500 mm
Q
SUPPLY AIR NOZZLES
Type
VENTILATING VALVES
Slot diffusers
205
Slot diffusers
LD-18 horizontal discharge
Type
LD-18/1 L=500 mm
LD-18/1 L=1000 mm
LD-18/1 L=1500 mm
LD-18/1 L=2000 mm
LD-18/2 L=500 mm
LD-18/2 L=1000 mm
LD-18/2 L=1500 mm
LD-18/2 L=2000 mm
LD-18/3 L=500 mm
LD-18/3 L=1000 mm
LD-18/3 L=1500 mm
LD-18/3 L=2000 mm
206
Q
[l/s]
27.8
41.7
55.6
83.3
111.1
138.9
166.7
194.4
222.2
250.0
277.8
333.3
388.9
[m³/h)
100
150
200
300
400
500
600
700
800
900
1000
1200
1400
62
LWA
[dB (A)]
41
51
Δpt
[Pa]
24
53
L0.2
[m]
6.6
6.9
Lmin
[m]
>15
>15
LWA
[dB (A)]
29
37
44
Δpt
[Pa]
16
36
64
L0.2
[m]
6.2
6.5
6.7
Lmin
[m]
12.8
>15
>15
LWA
[dB (A)]
25
31
36
46
Δpt
[Pa]
9
19
34
77
L0.2
[m]
5.8
6.2
6.4
6.6
Lmin
[m]
4.2
12.8
>15
>15
LWA
[dB (A)]
<25
28
32
40
47
53
58
Δpt
[Pa]
1
2
4
9
15
24
35
47
L0.2
[m]
5.2
5.9
6.2
6.5
6.7
6.8
6.9
6.9
>15
>15
>15
>15
Lmin
[m]
2
6.6
12.8
>15
LWA
[dB (A)]
29
37
45
56
Δpt
[Pa]
6
13
24
53
L0.2
[m]
5.4
5.6
5.7
5.8
Lmin
[m]
14
>15
>15
>15
LWA
[dB (A)]
<25
27
32
40
48
Δpt
[Pa]
4
9
16
37
65
L0.2
[m]
5
5.3
5.5
5.6
5.7
Lmin
[m]
2
8
13.4
>15
>15
LWA
[dB (A)]
<25
27
34
40
45
50
Δpt
[Pa]
5
9
20
35
55
80
L0.2
[m]
5
5.2
5.4
5.6
5.7
5.7
Lmin
[m]
2
5.8
13.4
>15
>15
>15
LWA
[dB (A)]
25
30
35
39
44
47
51
54
57
62
67
Δpt
[Pa]
1
3
6
9
13
18
23
29
36
52
71
L0.2
[m]
5
5.3
5.4
5.5
5.6
5.7
5.7
5.7
5.8
5.8
5.8
Lmin
[m]
2
8
13.4
>15
>15
>15
>15
>15
>15
>15
>15
LWA
[dB (A)]
37
48
56
63
54
58
<25
31
Δpt
[Pa]
3
6
11
24
42
66
L0.2
[m]
8
8.3
8.6
8.8
9
9.1
Lmin
[m]
8
10
11.2
12.6
13.4
13.8
LWA
[dB (A)]
<25
27
34
40
46
51
55
Δpt
[Pa]
4
7
16
29
45
65
88
L0.2
[m]
7.7
8
8.3
8.6
8.7
8.8
8.9
Lmin
[m]
6.4
8
10
11.2
12
12.6
13
LWA
[dB (A)]
<25
29
34
38
42
46
50
53
56
Δpt
[Pa]
4
9
15
24
34
47
61
77
96
L0.2
[m]
7.6
8
8.2
8.4
8.6
8.7
8.7
8.8
8.9
Lmin
[m]
5.8
8.2
9.6
10.6
11.2
11.8
12.2
12.6
12.8
LWA
[dB (A)]
26
30
34
37
40
44
46
49
Δpt
[Pa]
1
2
3
4
6
8
10
12
17
23
L0.2
[m]
7.7
8
8.2
8.4
8.5
8.6
8.6
8.7
8.8
8.9
Lmin
[m]
6.4
8
9.2
10
10.8
11.2
11.8
12
12.6
13
111.1
138.9
166.7
194.4
222.2
250.0
277.8
333.3
388.9
300
400
500
600
700
800
900
1000
1200
1400
28
34
44
52
58
64
68
[dB (A)]
Δpt
[Pa]
3
6
13
24
37
53
72
L0.2
[m]
7.4
7.6
7.8
8
8.1
8.2
8.3
Lmin
[m]
8.2
9
10.2
10.6
11
11.2
11.4
LWA
[dB (A)]
<25
31
37
42
47
51
55
58
Δpt
[Pa]
4
9
16
26
37
50
65
83
L0.2
[m]
7
7.4
7.6
7.7
7.8
7.9
8
8
Lmin
[m]
6.2
8.2
9
9.6
10.2
10.4
10.6
10.8
LWA
[dB (A)]
26
31
35
38
42
45
48
51
56
Δpt
[Pa]
5
9
14
20
28
36
46
57
82
L0.2
[m]
7
7.3
7.4
7.6
7.7
7.8
7.8
7.9
8
Lmin
[m]
6.2
7.6
8.4
9
9.6
9.8
10
10.4
10.6
LWA
[dB (A)]
28
31
34
37
40
42
45
50
Δpt
[Pa]
2
3
4
6
7
9
11
16
22
L0.2
[m]
7
7.2
7.4
7.5
7.6
7.7
7.7
7.8
7.9
Lmin
[m]
6.2
7.4
8.2
8.6
9.2
9.4
9.8
10.2
10.4
LWA
Dpt
L0.2
Lmin
54
Isothermal throw distance of supply air jet, when its velocity
drops down to 0.2 m/s
Minimum distance between diffusers, that the jet velocity is
less than or equal to 0.2 m/s
Q=600 m³/h
L=1000 mm
Room height:
Room temperature:
Supply temperature:
SLOT DIFFUSERS,
LWA
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
83.3
200
SWIRL DIFFUSERS,
55.6
150
LD-18/4 L=2000 mm
41.7
100
H=2.8 m
1.8 m
24 °C
DT= -6 K
SUPPLY AIR NOZZLES
LD-18/4 L=1500 mm
27.8
EXTERNAL ELEMENTS
LD-18/4 L=1000 mm
[l/s]
[m³/h)
AIR FLOW
CONTROL UNITS
LD-18/4 L=500 mm
Q
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
Type
VENTILATING VALVES
Slot diffusers
207
Slot diffusers
LD-18 vertical discharge
Type
LD-18/1 L=500 mm
LD-18/1 L=1000 mm
LD-18/1 L=1500 mm
LD-18/1 L=2000 mm
LD-18/2 L=500 mm
LD-18/2 L=1000 mm
LD-18/2 L=1500 mm
LD-18/2 L=2000 mm
LD-18/3 L=500 mm
LD-18/3 L=1000 mm
LD-18/3 L=1500 mm
LD-18/3 L=2000 mm
LD-18/4 L=500 mm
[l/s]
27.8
41.7
55.6
83.3
111.1
138.9
166.7
194.4
222.2
250.0
277.8
333.3
388.9
[m³/h)
100
150
200
300
400
500
600
700
800
900
1000
1200
1400
LWA
[dB (A)]
40
51
Δpt
[Pa]
25
56
L0.2 (+10K)
[m]
3.4
5.1
LWA
[dB (A)]
29
36
43
Δpt
[Pa]
17
39
69
L0.2 (+10K)
[m]
1.5
2.5
3.4
LWA
[dB (A)]
25
31
36
45
Δpt
[Pa]
10
21
38
86
L0.2 (+10K)
[m]
0.7
1.5
2.2
3.5
LWA
[dB (A)]
28
32
39
46
52
57
Δpt
[Pa]
4
7
17
30
47
67
0.9
2
2.5
3.5
4.4
5.2
37
44
55
Q
L0.2 (+10K)
[m]
LWA
[dB (A)]
29
Δpt
[Pa]
6
14
25
56
L0.2 (+10K)
[m]
2.4
3.2
3.8
4.6
LWA
[dB (A)]
<25
27
32
40
47
Δpt
[Pa]
4
10
17
39
69
L0.2 (+10K)
[m]
1
1.9
2.4
3.2
3.8
LWA
[dB (A)]
<25
27
33
39
44
49
Δpt
[Pa]
6
10
22
39
61
88
L0.2 (+10K)
[m]
1.1
1.7
2.4
3
3.4
3.8
LWA
[dB (A)]
25
30
35
39
43
47
50
53
56
61
Δpt
[Pa]
2
5
9
15
21
29
38
48
59
85
3.2
3.5
3.8
4
4.3
4.6
L0.2 (+10K)
[m]
LWA
[dB (A)]
23
1
1.9
2.4
2.9
30
36
46
54
60
Δpt
[Pa]
3
6
11
25
44
69
L0.2 (+10K)
[m]
1.9
3.1
4
5.7
7.1
8.2
LWA
[dB (A)]
<25
26
33
39
44
49
53
Δpt
[Pa]
4
8
17
31
49
70
95
L0.2 (+10K)
[m]
1.3
1.9
3.1
4
5
5.8
6.5
LWA
[dB (A)]
23
28
33
37
41
45
48
51
Δpt
[Pa]
5
10
18
28
41
56
73
92
L0.2 (+10K)
[m]
1
1.9
2.7
3.4
4
4.7
5.2
5.8
LWA
[dB (A)]
26
29
33
36
39
42
45
47
52
56
Δpt
[Pa]
3
5
8
12
16
21
27
34
48
66
1.3
1.9
2.5
3.1
3.6
4
4.5
5
5.8
6.5
42
50
56
61
L0.2 (+10K)
[m]
LWA
[dB (A)]
Δpt
[Pa]
2
3
6
14
25
39
56
L0.2 (+10K)
[m]
2.1
3.3
4.1
5.4
6.4
7.2
7.9
21
27
33
LWA A-weighted sound power level
Dpt Total pressure drop calculated to normal conditions
L0.2 (+10 °C) Isothermal throw distance of supply air jet with temperature
+10K, when its velocity drops down to 0.2 m/s
208
41.7
55.6
83.3
111.1
138.9
166.7
194.4
222.2
250.0
277.8
333.3
388.9
100
150
200
300
400
500
600
700
800
900
1000
1200
1400
LWA
[dB (A)]
<25
30
36
41
45
49
53
56
LD-18/4 L=1000 mm
Δpt
[Pa]
4
10
18
27
39
54
70
89
L0.2 (+10K)
[m]
2.1
3.3
4.1
4.8
5.4
6
6.5
6.9
LWA
[dB (A)]
26
30
34
37
41
44
47
50
54
Δpt
[Pa]
6
10
16
23
32
41
52
65
93
L0.2 (+10K)
[m]
2.1
2.9
3.6
4.1
4.6
5
5.5
5.8
6.5
LWA
[dB (A)]
27
30
33
36
39
41
44
48
52
Δpt
[Pa]
3
5
7
10
13
16
20
29
39
L0.2 (+10K)
[m]
2.1
2.8
3.3
3.8
4.2
4.5
4.8
5.5
6
LD-18/4 L=2000 mm
SLOT DIFFUSERS,
Pressure drop
(valid for horizontal discharge and plenum box with 100 % opened volume control damper)
LD-17/1
LD-17/2
L=500 mm 1000 1500
200
100
1500
50
40
30
2000
20
50
35
(A
(dB
A
))
45
40
35
5
LW
L
30
30
2
50
10
Δpt (Pa)
40
5
2000
20
45
10
(dB
(A
))
WA
2
3
50
100
150
200
300
500
700
3
Q (m /h)
50
150
200
300
500
700 900
Q (m /h)
50
40
30
50
40
30
Δpt (Pa)
50
10
45
5
40
35
2
30
(
(dB
A)
1500
20
2000
2000
50
10
45
5
40
(A
35
)
2
L WA
30
L
(dB
))
WA
3
3
150
200
300
500
700
900
Q (m /h)
EXTERNAL ELEMENTS
100
AIR FLOW
CONTROL UNITS
100
20
L=500 mm 1000
200
1500
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
L=500 mm 1000
200
Δpt (Pa)
100
LD-17/4
LD-17/3
100
100
50
40
30
Δpt (Pa)
L=500 mm 1000
200
100
150
200
300
SUPPLY AIR NOZZLES
LD-18/4 L=1500 mm
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
27.8
Q
SWIRL DIFFUSERS,
[l/s]
[m³/h)
Type
VENTILATING VALVES
Slot diffusers
500
700
900
Q (m /h)
209
Slot diffusers
Correction factors
LD-17/1
Length
L=500
L=1000
L=1500
L=2000
LD-17/3
Length
L=500
L=1000
L=1500
L=2000
210
Type of discharge
Horizontal
LD-17/2
Vertical
Volume control
damper
Open
Closed
Open
Closed
∆pt
x1
x 1.1
x 1.1
x 1.5
LWA
-
+1
-
+2
∆pt
x1
x 1.2
x 1.2
x 1.5
LWA
-
+2
-
+1
∆pt
x1
x 1.3
x 1.2
x 1.6
LWA
-
+2
-
+1
∆pt
x1
x 2.9
x 2.0
x 2.7
LWA
-
+2
-
-
Type of discharge
Horizontal
Vertical
Length
L=500
L=1000
L=1500
L=2000
LD-17/4
Volume control
damper
Open
Closed
Open
Closed
∆pt
x1
x 2.5
x 1.1
x 2.4
LWA
-
+5
+1
+4
∆pt
x1
x 2.6
x 1.2
x 2.5
LWA
-
+6
+2
+4
∆pt
x1
x 2.7
x 1.2
x 2.8
LWA
-
+6
+2
+3
∆pt
x1
x 3.2
x 2.5
x6
LWA
-
+5
+1
+2
Length
L=500
L=1000
L=1500
L=2000
Type of discharge
Horizontal
Volume control
damper
Open
∆pt
LWA
Vertical
Closed
Open
Closed
x1
x2
x 1.0
x 2.2
-
+4
+1
+2
∆pt
x1
x 2.3
x 1.2
x 2.2
LWA
-
+4
+1
+2
∆pt
x1
x 2.3
x 1.2
x 2.3
LWA
-
+3
-
+1
∆pt
x1
x3
x 1.6
x 3.4
LWA
-
+3
-
+1
Type of discharge
Horizontal
Vertical
Volume control
damper
Open
Closed
Open
Closed
∆pt
x1
x 2.2
x 1.2
x 2.4
LWA
-
+6
+2
+3
∆pt
x1
x 2.4
x 1.2
x 2.4
LWA
-
+5
+1
+3
∆pt
x1
x 2.7
x 1.2
x 2.7
LWA
-
+6
+1
+2
∆pt
x1
x5
x 1.9
x 4.3
LWA
-
+6
+1
+2
VENTILATING VALVES
Slot diffusers
Pressure drop
(valid for horizontal discharge and plenum box with 100 % opened volume control damper)
LD-18/2
L=500 mm 1000 1500
100
100
2000
50
40
30
50
40
30
20
50
40
(
5
35
(dB
A
)
A)
LW
40
35
5
30
30
(dB
A
(A
))
LW
2
3
150
200
300
500
700
1000
3
Q (m /h)
100
200
300
500
700
1000
Q (m /h)
LD-18/4
L=500 mm 1000
200
1500
100
100
50
40
30
50
40
30
20
2000
50
10
Δpt (Pa)
Δpt (Pa)
20
45
5
40
35
2
)
(A
(dB
L WA
30
1500
2000
50
10
45
5
40
35
)
L
2
(dB
(A
))
WA
30
3
100
150
200
300
500
700
1000 1200
Q (m /h)
200
3
100
150
200
300
500
700
1000
1400
Q (m /h)
EXTERNAL ELEMENTS
L=500 mm 1000
AIR FLOW
CONTROL UNITS
LD-18/3
150
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
100
SLOT DIFFUSERS,
2
50
45
10
Δpt (Pa)
45
10
2000
SWIRL DIFFUSERS,
20
Δpt (Pa)
L=500 mm 1000 1500
200
SUPPLY AIR NOZZLES
200
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
LD-18/1
211
Slot diffusers
Correction factors
LD-18/1
Length
L=500
L=1000
L=1500
L=2000
LD-18/3
Length
L=500
L=1000
L=1500
L=2000
212
Type of discharge
Horizontal
Volume control
damper
Open
∆pt
LWA
Vertical
LD-18/2
Closed
Open
Closed
x1
x1
x1
x 1.4
-
+1
-
-
∆pt
x1
x 1.1
x 1.1
x 1.4
LWA
-
+1
-
-
∆pt
x1
x 1.2
x 1.1
x 1.5
LWA
-
+1
-
-
∆pt
x1
x 2.8
x 1.9
x 2.6
LWA
-
+1
-
-
Type of discharge
Horizontal
Vertical
Length
L=500
L=1000
L=1500
L=2000
LD-18/4
Volume control
damper
Open
Closed
Open
Closed
∆pt
x1
x 2.5
x 1.0
x 2.4
LWA
-
+6
-
+3
∆pt
x1
x 2.5
x 1.1
x 2.5
LWA
-
+6
-
+3
∆pt
x1
x 2.5
x 1.2
x 2.7
LWA
-
+6
-
+2
∆pt
x1
x 3.1
x 2.8
x 6.5
LWA
-
+6
-
+3
Length
L=500
L=1000
L=1500
L=2000
Type of discharge
Horizontal
Vertical
Volume control
damper
Open
Closed
Open
Closed
∆pt
x1
x 2.1
x1
x 2.1
LWA
-
+3
-
+1
∆pt
x1
x 2.2
x 1.1
x 2.1
LWA
-
+3
-
+1
∆pt
x1
x 2.2
x 1.1
x 2.2
LWA
-
+3
-
+1
∆pt
x1
x3
x 1.6
x 3.3
LWA
-
+3
-
+1
Type of discharge
Horizontal
Volume control
damper
Open
Closed
∆pt
x1
LWA
-
∆pt
x1
Vertical
Open
Closed
x 2.2
x1
x 2.4
+5
+1
+2
x 2.3
x 1.1
x 2.5
LWA
-
+5
-
+2
∆pt
x1
x 2.6
x 1.1
x 2.6
LWA
-
+5
-
+2
∆pt
x1
x5
x 1.8
x 4.3
LWA
-
+4
-
+2
VENTILATING VALVES
Slot diffusers
■■ Nozzle diffuser LD-19
SLOT DIFFUSERS,
B
1. Plenum box
2. Spigot
3. Volume control damper (M)
4. Nozzle
5. Cross bar
6. Fixing screw
7. Insulation (entire outside surface
of the plenum box)
7
3
H
φD
1
6
8
L1
32
L1
H1
A
5
85
60
A
2
125
L/2
J
L
4
A
Dimensions
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
L1
552
652
752
852
476
526
576
626
676
726
776
826
876
926
976
No. of
nozzles*
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
EXTERNAL ELEMENTS
L
Up to length L=900mm: fixing with 4 screws. Other sizes: fixing with 6 screws.
A
H1
B
H
1
85
65
117
216.5
2
125
105
162
236.5
AIR FLOW
CONTROL UNITS
No. of rows
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
*
SWIRL DIFFUSERS,
8
L1
L
L1
SUPPLY AIR NOZZLES
Plenum box is made of sheet steel. Nozzle
diffusers are made in standard lenghts
(one section) from 600 up to 2000 mm
with 100 mm step.
85
H1
A
Description
Front plate is made of sheet steel and
powder painted in white (RAL 9010) or any
other RAL colour (on customer’s request).
Individually adjustable nozzles are made
of plastics in white (RAL 9010) or black
(RAL 9005) colour.
125
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
Application
Nozzle diffuser LD-19 is designed for
supply of warm or cold air and can be
mounted in the wall or in the ceiling.
Adjustable deflectors allow us to set
different directions of air discharge.
213
Slot diffusers
L 600 – 1000 1100 – 1500 1600 – 2000
No. of
rows
Number and dimensions of spigots fD
1
1x123
2x123
2x138
2
1x158
2x138
2x158
L/2
L/2
No. of inlet
spigots
Standard
length
Position of inlet
spigots
1
600-1000
L/2
2
1100-1500
J=300
2
1600-2000
J=400
J
J
With screws (V)
Installation with a cross-member (Z)
Installation of a plenum box with
Types of air discharge
Possible angle settings
Cooling
Heating
Nastavitve kota šobe
Nastavitve kota šobe
214
Hlajenje
Hlajenje
B
A
Front plate installation
Installation on a cross bar can be made
through the hole, in which is mounted a
nozzle.
60
φD
Number and dimensions of
spigots
Gretje
Gretje
VENTILATING VALVES
Slot diffusers
Ordering key
LD-19/1/B/K/M/Z/P/I5 L=1000 (length L=600, 700, …, 2000)
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
I5 T hermal insulation (polyethylene), 5 mm thick, on the outside of the plenum box
SWIRL DIFFUSERS,
V Visible installation (front plate without plenum box)
K Plenum box
SLOT DIFFUSERS,
B Black deflectors
W White deflectors
1 Number of rows with nozzles
2
LD-19 Nozzle diffuser
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
AIR FLOW
CONTROL UNITS
EXTERNAL ELEMENTS
SUPPLY AIR NOZZLES
Note:
Standard colour is RAL 9010. Other colours on customer’s request.
215
Slot diffusers
Quick selection
Horizontal discharge DT= 0K
Type
LD-19/1 L=600 mm
LD-19/1 L=1000 mm
LD-19/1 L=1500 mm
LD-19/1 L=2000 mm
LD-19/2 L=600 mm
LD-19/2 L=1000 mm
LD-19/2 L=1500 mm
LD-19/2 L=2000 mm
Q
(l/s)
13.9
27.8
69.4
83.3
111.1
(m³/h)
50
100
150
200
250
300
400
(dB(A))
27
40
46.8
/
/
/
/
∆pt
(Pa)
12.8
47
101.2
/
/
/
/
/
L0.2
(m)
2.7
3.5
4.1
/
/
/
Lmin
(m)
4.3
5.9
7.1
/
/
/
/
LWA
(dB(A))
21.4
33.7
40.8
44.8
/
/
/
∆pt
(Pa)
5
17.7
37.7
64.6
/
/
/
L0.2
(m)
2.2
2.8
3.6
4.4
/
/
/
Lmin
(m)
3.2
4.4
6.0
7.6
/
/
/
LWA
(dB(A))
16.4
27.4
34.8
39.7
43.1
/
/
∆pt
(Pa)
2.3
7.9
16.9
28.9
43.8
/
/
L0.2
(m)
2
2.5
2.8
3.3
3.9
/
/
Lmin
(m)
2.7
3.7
4.4
5.4
6.6
/
/
LWA
(dB(A))
13.1
22.8
30
35.2
39.1
41.9
45.5
∆pt
(Pa)
1.4
4.6
9.7
16.5
25
35.2
60.4
L0.2
(m)
1.9
2.2
2.6
2.9
3.2
3.6
3.9
Lmin
(m)
2.5
3.1
3.9
4.5
5.1
5.9
6.6
LWA
(dB(A))
19.1
30.9
38.2
/
/
/
/
∆pt
(Pa)
3.4
12.2
26
/
/
/
/
L0.2
(m)
3.2
4.6
6.8
/
/
/
/
Lmin
(m)
5.4
8.2
12.6
/
/
/
/
LWA
(dB(A))
13.1
22.8
30
35.2
/
/
/
∆pt
(Pa)
1.5
4.9
10.1
17.1
/
/
/
L0.2
(m)
2.7
3.5
4.3
5.4
/
/
/
Lmin
(m)
4.3
5.9
7.6
9.8
/
/
/
LWA
(dB(A))
10.3
18.4
24.9
30.1
34.2
/
/
∆pt
(Pa)
0.7
2.4
4.8
7.9
11.9
/
/
/
L0.2
(m)
2.4
3
3.4
4.2
4.8
/
Lmin
(m)
3.7
4.9
5.7
7.3
8.5
/
/
LWA
(dB(A))
9.1
16.6
22.8
27.8
31.9
35.3
40.3
∆pt
(Pa)
0.5
1.4
2.8
4.7
6.9
9.6
16.2
L0.2
(m)
2.4
2.8
3.1
3.6
4
4.4
5.6
Lmin
(m)
3.6
4.4
5.1
6.1
6.9
7.7
10.1
Sound power level
Total pressure drop
Isothermal throw length of supply air jet, when its speed drops down to 0.2 m/s
Minimum distance between diffusers, that the jet velocity is less than or equal to 0.2 m/s
L02 (m)
216
55.6
LWA
LWA (dB(A))
Dpt (Pa)
L0.2 (m)
Lmin (m)
41.7
L02 (m)
Room height:
Room temperature:
Supply temperature by cooling:
L02 (m)
L02 (m)
H=2.8 m
1.8 m
24 °C
ΔT= - 6 K
VENTILATING VALVES
Slot diffusers
LD-19/2 L=600 mm
LD-19/2 L=1000 mm
LD-19/2 L=1500 mm
LD-19/2 L=2000 mm
Q
LWA
∆pt
L0.2
LWA
∆pt
L0.2
LWA
∆pt
L0.2
LWA
∆pt
L0.2
(l/s)
13.9
27.8
41.7
55.6
69.4
83.3
111.1
(m³/h)
50
100
150
200
250
300
400
(dB(A))
(Pa)
(m)
(dB(A))
(Pa)
(m)
(dB(A))
(Pa)
(m)
(dB(A))
(Pa)
(m)
19.1
3.4
1.8
13.1
1.5
1.6
10.3
0.7
1.4
9.1
0.5
1.3
30.9
12.2
2.6
22.8
4.9
2.0
18.4
2.4
1.7
16.6
1.4
1.6
38.2
26
3.9
30
10.1
2.3
24.9
4.8
1.9
22.8
2.8
1.8
/
/
/
35.2
17.1
2.8
30.1
7.9
2.4
27.8
4.7
2.1
/
/
/
/
/
/
34.2
11.9
2.7
31.9
6.9
2.3
/
/
/
/
/
/
/
/
/
35.3
9.6
2.5
/
/
/
/
/
/
/
/
/
40.3
16.2
3.2
SWIRL DIFFUSERS,
Type
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
Vertical discharge DT= 0K
LD-19/2 L=1000 mm
LD-19/2 L=1500 mm
LD-19/2 L=2000 mm
LWA
∆pt
L0.2
LWA
∆pt
L0.2
LWA
∆pt
L0.2
LWA
∆pt
L0.2
(l/s)
13.89
27.78
41.67
55.56
69.44
83.33
111.11
(m³/h)
50.00
100.00
150.00
200.00
250.00
300.00
400.00
(dB(A))
(Pa)
(m)
(dB(A))
(Pa)
(m)
(dB(A))
(Pa)
(m)
(dB(A))
(Pa)
(m)
19.1
3.4
1.20
13.1
1.5
1.16
10.3
0.7
1.07
9.1
0.5
1.03
30.9
12.2
1.72
22.8
4.9
1.45
18.4
2.4
1.33
16.6
1.4
1.26
38.2
26
2.55
30
10.1
1.64
24.9
4.8
1.51
22.8
2.8
1.40
/
/
/
35.2
17.1
2.03
30.1
7.9
1.87
27.8
4.7
1.62
/
/
/
/
/
/
34.2
11.9
2.14
31.9
6.9
1.80
/
/
/
/
/
/
/
/
/
35.3
9.6
1.98
/
/
/
/
/
/
/
/
/
40.3
16.2
2.52
LD-19/2 L=600 mm
Q
Vertical discharge DT= +10K
LD-19/2 L=1000 mm
LD-19/2 L=1500 mm
LD-19/2 L=2000 mm
LWA
∆pt
L0.2
LWA
∆pt
L0.2
LWA
∆pt
L0.2
LWA
∆pt
L0.2
(l/s)
13.89
27.78
41.67
55.56
69.44
83.33
111.11
(m³/h)
50.00
100.00
150.00
200.00
250.00
300.00
400.00
(dB(A))
(Pa)
(m)
(dB(A))
(Pa)
(m)
(dB(A))
(Pa)
(m)
(dB(A))
(Pa)
(m)
19.1
3.4
0.85
13.1
1.5
0.86
10.3
0.7
0.74
9.1
0.5
0.69
30.9
12.2
1.22
22.8
4.9
1.07
18.4
2.4
0.92
16.6
1.4
0.85
38.2
26
1.81
30
10.1
1.22
24.9
4.8
1.04
22.8
2.8
0.94
/
/
/
35.2
17.1
1.50
30.1
7.9
1.29
27.8
4.7
1.09
/
/
/
/
/
/
34.2
11.9
1.47
31.9
6.9
1.21
/
/
/
/
/
/
/
/
/
35.3
9.6
1.33
/
/
/
/
/
/
/
/
/
40.3
16.2
1.69
EXTERNAL ELEMENTS
LD-19/2 L=600 mm
Q
AIR FLOW
CONTROL UNITS
Type
SUPPLY AIR NOZZLES
Type
SLOT DIFFUSERS,
Vertical discharge DT= +5K
Definitions of symbols
L02 (m)
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
LWA (dB(A)) Sound power level
Total pressure drop
Dpt (Pa)
L0.2 (m)
217
Slot diffusers
Pressure drop by horizontal discharge and 100 % opened volume
control damper.
100
100
50
40
30
50
40
30
20
20
10
35
10
2
50
45
40
(A )
L
WA
(dB
50
45
)
40
2000
(A )
L
WA
(dB
)
35
Δp t (Pa)
5
1000
L=600mm
15001000
2000 1500
5
3
150
100
200
150
300 200 500300 700
Q (m /h)
1000 700
500
218
200
200
100
100
50
40
30
50
40
30
20
20
10
10
5
5
Q (m /h)
LD-19/1
LD-19/2
open
closed
open
closed
L=600
X1
X 1.3
X1
X 1.8
L=1000
X1
X 1.4
X1
X2
L=1500
X1
X 1.5
X1
X 2.2
L=2000
X1
X2
X1
X 2.5
1000
L=600mm
1000
L=600mm
1500
1500
2000
45
2000
45
40
35
30
(A )
(dB
A
)
LW
30
40
35
(A )
(dB
A
)
LW
3
100
150
100
200
LD-20/1
LD-20/1
200
200
100
100
50
40
30
50
40
30
20
20
25
10
10
5
2
2
3
1000
Correction factors applicable to LD-19
Length
LD-19/2
2
2
100
LD 19/2
Δp t (Pa)
200
L=600mm
200
LD-19/2
Δp t (Pa)
LD-19/1
Δp t (Pa)
LD-19/1
Δp t (Pa)
Δp t (Pa)
LD 19/1
150
300 200 500300 700
Q (m /h)
500
1000 700
L=600mm 1000L=
40
35
(A )
30
L
WA
(dB
)
25
5
2
3
1000
Q (m /h)
100
150
100
200
150
300 200
3
B
7
3
1
2
3
4
5
6
7
6
H
φD
1
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
125
85
A
SLOT DIFFUSERS,
Plenum box
Inlet spigot
Volume control damper (M)
Nozzle
Cross-bar
Fixing screw
Insulation (entire outside surface of the
plenum box)
8
32
5
8
L1
L
60
L1
SUPPLY AIR NOZZLES
2
H1
A
Description
The front plate is made of sheet steel
powder painted in white (RAL 9010) or any
other RAL colour (on customer’s request).
Individually adjustable nozzles are made
from plastic in white (RAL 9010) or black
(RAL 9005) colour. Plenum box is made
of sheet steel. Nozzle diffuser LD-20 can
be made in standard lenghts (one section)
from 600 up to 2000 mm with 100 mm
step.
J
8
L1
L
600
700
800
900
1000
1100
1200
1300
1400
1500
1600
1700
1800
1900
2000
L1
552
652
752
852
476
526
576
626
676
726
776
826
876
926
976
No. of nozzles
12
14
16
18
20
22
24
26
28
30
32
34
36
38
40
No. of rows
H1
B
H
A
1
65
117
216.5
85
2
105
162
236.5
125
AIR FLOW
CONTROL UNITS
L
EXTERNAL ELEMENTS
4
A
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
φ20
SWIRL DIFFUSERS,
L1
85
H1
A
Application
Nozzle diffuser LD-20 is designed to
supply low quantities of air on big window
surfaces to prevent condensation (ceiling
installation near windows) or for big
throws for cooling when wall installation
(Coanda effect).
125
■■ Nozzle diffuser LD-20
VENTILATING VALVES
Slot diffusers
219
Slot diffusers
No. of rows
600 – 1000
1100 – 1500 1600 – 2000
Number and dimensions of spigots fD
1
1x123
2x123
2x138
2
1x158
2x138
2x158
L/2
No. of inlet
spigots
Standard
length
Position of
inlet spigots
1
600-1000
L/2
2
1100-1500
J=300
2
1600-2000
J=400
L/2
J
J
φ20
Front plate installation
With screws(V)
Installation of a plenum box with
Installation with a cross-member (Z)
Installation on a cross bar can be made through the
hole, in which is mounted a nozzle.
Possible angle settings
150
150
150
150
220
60
8
L
φD
Number and dimensions
of spigots
VENTILATING VALVES
Slot diffusers
Ordering key
LD-20/1/B/K/M/Z/P/I5 L=1000 (lenght L=600, 700, …, 2000)
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
I5 T hermal insulation (polyethylene), 5 mm thick, on the outside of the plenum box
I9 Sound and thermal insulation (from -40 °C to 105 °C), 9 mm thick, on the outside of the plenum
I19 Sound and thermal insulation (from -40 °C to 105 °C), 19 mm thick, on the outside of the plenum
box (synthetic rubber based material)
SWIRL DIFFUSERS,
V Visible installation (front plate without plenum box)
K Plenum box
SLOT DIFFUSERS,
B Black nozzles
W White nozzles
1 Number of rows with nozzles
2
LD-20 Nozzle diffuser
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
AIR FLOW
CONTROL UNITS
EXTERNAL ELEMENTS
SUPPLY AIR NOZZLES
Note:
Sandard colour is RAL 9010. Other colours on customer’s request.
221
Slot diffusers
Quick selection
Horizontal discharge DT=0K
Type
LD-20/1 L=600 mm
LD-20/1 L=1000 mm
LD-20/1 L=1500 mm
LD-20/1 L=2000 mm
LD-20/2 L=600 mm
LD-20/2 L=1000 mm
LD-20/2 L=1500 mm
LD-20/2 L=2000 mm
222
Q
(l/s)
13.9
27.8
41.7
55.6
69.4
83.3
111.1
(m³/h)
50
100
150
200
250
300
400
LWA
(dB(A))
20
33.8
41
/
/
/
/
∆pt
(Pa)
13.5
35.6
74.8
/
/
/
/
L0.2
(m)
6.6
> 10
> 10
/
/
/
/
LWA
(dB(A))
11
23.2
30
36
/
/
/
∆pt
(Pa)
12
22
43
76
/
/
/
L0.2
(m)
3.8
6.6
9.3
> 10
/
/
/
LWA
(dB(A))
8
14.5
25
31
35
37.5
43
∆pt
(Pa)
5.5
12.5
25
39.6
55
86.4
136.8
L0.2
(m)
2.1
3.5
5
6.4
7.9
9.3
> 10
LWA
(dB(A))
/
11
21
26.5
31
34.7
40
∆pt
(Pa)
/
7.5
15
23.7
33
45.5
75.2
L0.2
(m)
/
2.5
3.6
4.6
5.7
6.7
7.5
LWA
(dB(A))
14
25
31
/
/
/
/
∆pt
(Pa)
2
8.3
18.3
/
/
/
/
L0.2
(m)
4.2
9.1
> 10
/
/
/
/
LWA
(dB(A))
/
19
24
27.8
31
/
/
∆pt
(Pa)
/
4
8
15
22
/
/
L0.2
(m)
/
7.1
8.9
> 10
> 10
/
/
LWA
(dB(A))
/
14.6
20.4
24
27
28.5
32.5
∆pt
(Pa)
/
2.4
4.7
7.6
13
17
28.5
L0.2
(m)
/
4.3
5.3
6.2
7.3
8.1
8.9
LWA
(dB(A))
/
11
17
21.5
24
26.3
30.3
∆pt
(Pa)
/
1.4
2.7
4.2
6.5
8.2
14.4
L0.2
(m)
/
2.8
3.5
4.0
4.7
5.3
5.8
VENTILATING VALVES
Slot diffusers
LD-20/2 L=1000 mm
LD-20/2 L=1500 mm
LD-20/2 L=2000 mm
69.4
83.3
111.1
200
250
300
400
LWA
(dB(A))
20
33.8
41
/
/
/
/
∆pt
(Pa)
13.5
35.6
74.8
/
/
/
/
L0.2
(m)
5.1
> 10
> 10
/
/
/
/
/
LWA
(dB(A))
11
23.2
30
36
/
/
∆pt
(Pa)
12
22
43
76
/
/
/
L0.2
(m)
2.9
6.9
8.8
> 10
/
/
/
LWA
(dB(A))
8
14.5
25
31
35
37.5
43
∆pt
(Pa)
5.5
12.5
25
39.6
55
86.4
136.8
L0.2
(m)
1.6
3.8
4.8
6.6
8.2
9.8
> 10
LWA
(dB(A))
/
11
21
26.5
31
34.7
40
∆pt
(Pa)
/
7.5
15
23.7
33
45.5
75.2
L0.2
(m)
/
2.7
3.4
4.7
5.8
7.0
8.1
LWA
(dB(A))
14
25
31
/
/
/
/
∆pt
(Pa)
2
8.3
18.3
/
/
/
/
L0.2
(m)
7.3
9.1
> 10
/
/
/
/
/
LWA
(dB(A))
/
19
24
27.8
31
/
∆pt
(Pa)
/
4
8
15
22
/
/
L0.2
(m)
/
4.7
7.1
9.3
> 10
/
/
LWA
(dB(A))
/
14.6
20.4
24
27
28.5
32.5
∆pt
(Pa)
/
2.4
4.7
7.6
13
17
28.5
L0.2
(m)
/
2.8
4.3
5.6
7.0
8.2
9.3
LWA
(dB(A))
/
11
17
21.5
24
26.3
30.3
∆pt
(Pa)
/
1.4
2.7
4.2
6.5
8.2
14.4
L0.2
(m)
/
1.8
2.8
3.6
4.5
5.3
6.0
SWIRL DIFFUSERS,
55.6
150
SLOT DIFFUSERS,
LD-20/2 L=600 mm
41.7
100
LD-20/1 L=2000 mm
27.8
50
SUPPLY AIR NOZZLES
LD-20/1 L=1500 mm
13.9
EXTERNAL ELEMENTS
LD-20/1 L=1000 mm
(l/s)
(m³/h)
AIR FLOW
CONTROL UNITS
LD-20/1 L=600 mm
Q
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
Type
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
Horizontal discharge DT=-5K
223
Slot diffusers
Horizontal discharge DT=-10K
Type
LD-20/1 L=600 mm
LD-20/1 L=1000 mm
LD-20/1 L=1500 mm
LD-20/1 L=2000 mm
LD-20/2 L=600 mm
LD-20/2 L=1000 mm
LD-20/2 L=1500 mm
LD-20/2 L=2000 mm
Q
(l/s)
13.9
27.8
41.7
55.6
69.4
83.3
111.1
(m³/h)
50
100
150
200
250
300
400
LWA
(dB(A))
20
33.8
41
/
/
/
/
∆pt
(Pa)
13.5
35.6
74.8
/
/
/
/
L0.2
(m)
3.5
8.5
> 10
/
/
/
/
LWA
(dB(A))
11
23.2
30
36
/
/
/
∆pt
(Pa)
12
22
43
76
/
/
/
L0.2
(m)
2
4.9
8.1
> 10
/
/
/
LWA
(dB(A))
8
14.5
25
31
35
37.5
43
∆pt
(Pa)
5.5
12.5
25
39.6
55
86.4
136.8
L0.2
(m)
1.1
2.6
4.4
5.9
7.3
9.1
> 10
LWA
(dB(A))
/
11
21
26.5
31
34.7
40
∆pt
(Pa)
/
7.5
15
23.7
33
45.5
75.2
L0.2
(m)
/
1.9
3.1
4.2
5.3
6.6
7.5
LWA
(dB(A))
14
25
31
/
/
/
/
∆pt
(Pa)
2
8.3
18.3
/
/
/
/
L0.2
(m)
3.4
4.3
7.74
/
/
/
/
LWA
(dB(A))
/
19
24
27.8
31
/
/
∆pt
(Pa)
/
4
8
15
22
/
/
L0.2
(m)
/
2.5
4.5
6.7
9.7
/
/
LWA
(dB(A))
/
14.6
20.4
24
27
28.5
32.5
∆pt
(Pa)
/
2.4
4.7
7.6
13
17
28.5
L0.2
(m)
/
1.5
2.7
4.0
5.8
6.9
8.3
LWA
(dB(A))
/
11
17
21.5
24
26.3
30.3
∆pt
(Pa)
/
1.4
2.7
4.2
6.5
8.2
14.4
L0.2
(m)
/
1.0
1.8
2.6
3.8
4.5
5.4
Total pressure drop
Dpt (Pa)
Isothermal throw length of supply air jet, when its speed drops down to 0.2 /s
L0.2 (m)
L02 (m)
L02 (m)
L02 (m)
L02 (m)
224
VENTILATING VALVES
Slot diffusers
LD-20/2 L=1000 mm
LD-20/2 L=1500 mm
LD-20/2 L=2000 mm
69.4
83.3
111.1
200
250
300
400
LWA
(dB(A))
20
33.8
41
/
/
/
/
∆pt
(Pa)
13.5
35.6
74.8
/
/
/
/
L0.2
(m)
5.2
> 10
> 10
/
/
/
/
LWA
(dB(A))
11
23.2
30
36
/
/
/
∆pt
(Pa)
12
22
43
76
/
/
/
L0.2
(m)
3.2
7.4
9.4
> 10
/
/
/
LWA
(dB(A))
8
14.5
25
31
35
37.5
43
∆pt
(Pa)
5.5
12.5
25
39.6
55
86.4
136.8
L0.2
(m)
1.5
3.9
6.6
9.8
> 10
> 10
> 10
LWA
(dB(A))
/
11
21
26.5
31
34.7
40
∆pt
(Pa)
/
7.5
15
23.7
33
45.5
75.2
L0.2
(m)
/
2.6
4.6
6.6
9
> 10
> 10
LWA
(dB(A))
14
25
31
/
/
/
/
∆pt
(Pa)
2
8.3
18.3
/
/
/
/
L0.2
(m)
2.7
5.4
8.8
/
/
/
/
LWA
(dB(A))
/
19
24
27.8
31
/
/
∆pt
(Pa)
/
4
8
15
22
/
/
L0.2
(m)
/
3
5.4
7.2
8.9
/
/
LWA
(dB(A))
/
14.6
20.4
24
27
28.5
32.5
∆pt
(Pa)
/
2.4
4.7
7.6
13
17
28.5
L0.2
(m)
/
3.3
4.6
6.1
7.7
9.4
> 10
LWA
(dB(A))
/
11
17
21.5
24
26.3
30.3
∆pt
(Pa)
/
1.4
2.7
4.2
6.5
8.2
14.4
L0.2
(m)
/
1.9
2.6
3.4
4.2
5.1
7.1
SWIRL DIFFUSERS,
55.6
150
SLOT DIFFUSERS,
LD-20/2 L=600 mm
41.7
100
LD-20/1 L=2000 mm
27.8
50
SUPPLY AIR NOZZLES
LD-20/1 L=1500 mm
13.9
EXTERNAL ELEMENTS
LD-20/1 L=1000 mm
(l/s)
(m³/h)
AIR FLOW
CONTROL UNITS
LD-20/1 L=600 mm
Q
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
Type
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
Vertical discharge DT=0K
225
Slot diffusers
Vertical discharge DT=+5K
Type
LD-20/1 L=600 mm
LD-20/1 L=1000 mm
LD-20/1 L=1500 mm
LD-20/1 L=2000 mm
LD-20/2 L=600 mm
LD-20/2 L=1000 mm
LD-20/2 L=1500 mm
LD-20/2 L=2000 mm
226
Q
(l/s)
13.9
27.8
41.7
55.6
69.4
83.3
111.1
(m³/h)
50
100
150
200
250
300
400
LWA
(dB(A))
20
33.8
41
/
/
/
/
∆pt
(Pa)
13.5
35.6
74.8
/
/
/
/
L0.2
(m)
3.9
> 10
> 10
LWA
(dB(A))
11
23.2
30
36
/
/
/
∆pt
(Pa)
12
22
43
76
/
/
/
L0.2
(m)
2
5.1
8.6
> 10
/
/
/
LWA
(dB(A))
8
14.5
25
31
35
37.5
43
∆pt
(Pa)
5.5
12.5
25
39.6
55
86.4
136.8
L0.2
(m)
1.2
3
5.1
7.5
> 10
LWA
(dB(A))
/
11
21
26.5
31
34.7
40
∆pt
(Pa)
/
7.5
15
23.7
33
45.5
75.2
L0.2
(m)
/
2.1
3.6
5.2
7
9.1
> 10
LWA
(dB(A))
14
25
31
/
/
/
/
∆pt
(Pa)
2
8.3
18.3
/
/
/
/
L0.2
(m)
2.3
5.9
> 10
/
/
/
/
LWA
(dB(A))
/
19
24
27.8
31
/
/
∆pt
(Pa)
/
4
8
15
22
/
/
L0.2
(m)
/
3
5.4
7.2
8.4
/
/
LWA
(dB(A))
/
14.6
20.4
24
27
28.5
32.5
∆pt
(Pa)
/
2.4
4.7
7.6
13
17
28.5
L0.2
(m)
/
1.85
3.1
4.5
6.2
7.9
> 10
LWA
(dB(A))
/
11
17
21.5
24
26.3
30.3
∆pt
(Pa)
/
1.4
2.7
4.2
6.5
8.2
14.4
L0.2
(m)
/
1.6
2.2
3.2
4.3
5.4
8
VENTILATING VALVES
Slot diffusers
LD-20/2 L=1000 mm
LD-20/2 L=1500 mm
LD-20/2 L=2000 mm
69.4
83.3
111.1
200
250
300
400
LWA
(dB(A))
20
33.8
41
/
/
/
/
∆pt
(Pa)
13.5
35.6
74.8
/
/
/
/
L0.2
(m)
2.6
6.3
> 10
/
/
/
/
LWA
(dB(A))
11
23.2
30
36
/
/
/
∆pt
(Pa)
12
22
43
76
/
/
/
L0.2
(m)
1.5
3.6
6.2
8.8
/
/
/
LWA
(dB(A))
8
14.5
25
31
35
37.5
43
∆pt
(Pa)
5.5
12.5
25
39.6
55
86.4
136.8
L0.2
(m)
1.5
2
3.3
4.8
6.5
8.3
> 10
LWA
(dB(A))
/
11
21
26.5
31
34.7
40
∆pt
(Pa)
/
7.5
15
23.7
33
45.5
75.2
L0.2
(m)
/
1.4
2.4
3.4
4.6
5.8
8.5
LWA
(dB(A))
14
25
31
/
/
/
/
∆pt
(Pa)
2
8.3
18.3
/
/
/
/
L0.2
(m)
1.5
4.5
8.2
/
/
/
/
LWA
(dB(A))
/
19
24
27.8
31
/
/
∆pt
(Pa)
/
4
8
15
22
/
/
L0.2
(m)
/
2
3.6
5.3
7.4
/
/
LWA
(dB(A))
/
14.6
20.4
24
27
28.5
32.5
∆pt
(Pa)
/
2.4
4.7
7.6
13
17
28.5
L0.2
(m)
/
1.1
2.1
3.3
4.6
6.1
9.2
LWA
(dB(A))
/
11
17
21.5
24
26.3
30.3
∆pt
(Pa)
/
1.4
2.7
4.2
6.5
8.2
14.4
L0.2
(m)
/
0.7
1.3
2.1
3
3.9
6.1
SWIRL DIFFUSERS,
55.6
150
SLOT DIFFUSERS,
LD-20/2 L=600 mm
41.7
100
LD-20/1 L=2000 mm
27.8
50
SUPPLY AIR NOZZLES
LD-20/1 L=1500 mm
13.9
EXTERNAL ELEMENTS
LD-20/1 L=1000 mm
(l/s)
(m³/h)
AIR FLOW
CONTROL UNITS
LD-20/1 L=600 mm
Q
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
Type
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
227
Slot diffusers
Type
LD-20/1 L=600 mm
LD-20/1 L=1000 mm
LD-20/1 L=1500 mm
LD-20/1 L=2000 mm
LD-20/2 L=600 mm
LD-20/2 L=1000 mm
LD-20/2 L=1500 mm
LD-20/2 L=2000 mm
Q
(l/s)
13.9
27.8
41.7
55.6
69.4
83.3
111.1
(m³/h)
50
100
150
200
250
300
400
LWA
(dB(A))
20
33.8
41
/
/
/
/
∆pt
(Pa)
13.5
35.6
74.8
/
/
/
/
L0.2
(m)
1.8
4.5
7.9
/
/
/
/
LWA
(dB(A))
11
23.2
30
36
/
/
/
∆pt
(Pa)
12
22
43
76
/
/
/
L0.2
(m)
1.1
2.6
4.3
5.1
/
/
/
LWA
(dB(A))
8
14.5
25
31
35
37.5
43
∆pt
(Pa)
5.5
12.5
25
39.6
55
86.4
136.8
L0.2
(m)
1.1
1.4
2.4
3.5
4.6
6
8.8
LWA
(dB(A))
/
11
21
26.5
31
34.7
40
∆pt
(Pa)
/
7.5
15
23.7
33
45.5
75.2
L0.2
(m)
/
1
1.6
2.4
3.3
4.2
6.1
LWA
(dB(A))
14
25
31
/
/
/
/
∆pt
(Pa)
2
8.3
18.3
/
/
/
/
L0.2
(m)
1.2
3.1
5.6
/
/
/
/
LWA
(dB(A))
/
19
24
27.8
31
/
/
∆pt
(Pa)
/
4
8
15
22
/
/
L0.2
(m)
/
1.6
2.4
3.7
5.3
/
/
LWA
(dB(A))
/
14.6
20.4
24
27
28.5
32.5
∆pt
(Pa)
/
2.4
4.7
7.6
13
17
28.5
L0.2
(m)
/
1
1.5
2.3
3.2
4.2
6.3
LWA
(dB(A))
/
11
17
21.5
24
26.3
30.3
∆pt
(Pa)
/
1.4
2.7
4.2
6.5
8.2
14.4
L0.2
(m)
/
0.6
0.9
1.5
2.1
2.8
4.2
228
L02 (m)
L02 (m)
Total pressure drop
Dpt (Pa)
L0.2 (m)
VENTILATING VALVES
Slot diffusers
Pressure drop by horizontal discharge and 100 % opened volume control damper
LD-20/1
LD-20/1
LD-20/2
LD-20/2
20
10
10
5
40
35
40
35
) ) (A ) )
30(A
(dB A (dB
LW
25 L
30
25
WA
5
50
40
30
50
40
30
20
20
10
10
5
5
2000 2000
35
25
20
2
2
3
Q (m /h)
Q (m /h)
3
A)
B(
25(d
L
WA
L
WA
)
(d
20
2
3
3
Q (m /h)
Q (m /h)
100 100
150 150
200 200300 300 500 500
700 700
1000 1000
100 100
150 150
200 200300 300 500 500
700 700
1000 1000
open
closed
open
closed
L=600
X1
X 1.25
X1
X 1.6
L=1000
X1
X 1.3
X1
X 1.8
L=1500
X1
X 1.4
X1
X2
L=2000
X1
X 1.8
X1
X 2.3
SUPPLY AIR NOZZLES
LD-20/2
EXTERNAL ELEMENTS
Length
LD-20/1
Correction factors applicable to LD-20
AIR FLOW
CONTROL UNITS
/h)
Q (m /h)
3
30
)
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
3
0
2
30
A)
B(
35
SLOT DIFFUSERS,
20
1500 1500
100 100
Δp t (Pa)
50
40
30
Δp t (Pa)
Δp t (Pa)
50
40
30
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
100 100
2000
5
L=600mm
L=600mm
1000 1000
200 200
Δp t (Pa)
1500
SWIRL DIFFUSERS,
1000 1000
L=600mm
L=600mm
1500 1500
2000 2000
200 200
229
Slot diffusers
RAL
9010
CD
Description
LD-16N slot diffusers are designed in 1,
2, 3, 4, 5 and 6 slot versions. They are
made of fixed aluminium sections and an
aluminium structural frame.
18.5
The diffusers are available in single piece
lengths 200 mm to 2000 mm. Painting
according to the customer’s specification
is available on order.
100
57
18.5
15
8.5
18.5
100
8.5
15
130
150
15
32
45.5
15
100
8.5
two slots LD-16N/2
18.5
15
8.5
15
130
57
45.5
100
150
15
32
four slots LD-16N/4
230
180
five slots LD-16N/5
45.5
130
57
32
180
100
150
15
130
32
57
single slot LD-16N/1
130
three slots LD-16N/3
59
150
15
32
45.5
180
230
59
72.5
150
180
45.5
59
230
six slots LD-16N/6
280
59
72.5
86
150
180
230
45.5
59
72.5
230
280
330
72.5
86
180
230
280
59
72.5
86
280
330
86
230
15
32
18.5
Versions
15
130
57
Advantages
• No glass misting
• Optimal ventilation
• No heat losses
• Low pressure drop
• Prevents the descent of cold air along
windows
• Does not cause heating of air near the
windows even in 18.5
the sunshine
8.5
• Easy installation
8.5
280
330
100
Application
LD-16N floor slot diffusers are a suitable
solution for swimming pools and similar
rooms with large glass surfaces and
windows. They are designed for installation in the floor. Warm air is supplied in the
upwards direction, towards the window.
With appropriate dimensions, proper air
supply is guaranteed, free of excessive
draught or noise (LWA<35 dB(A)).
AI
57
■■ Floor Slot Diffusers LD-16N
15
Installation method
VENTILATING VALVES
Slot diffusers
max 0.2m
1 glass
2 LD-16N slot diffuser
3 air supply channel
1
SWIRL DIFFUSERS,
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
2
3
Fast selection diagram
LwA < 35 dB(A); Vef =2,5 m/s; Δpt = 16 Pa
LD
/5
6
N/
-16
Example
The available floor area next to the glass surface
is 15 m in length. The calculated supplied air
flow rate is 4000 m³/h. From the diagram, the
type:
LD-16N/3 L=15m is selected.
L (m)
15
Q (m³/h)
LWA (dB(A))
Δpt (Pa) L (m)
vef (m/s)
10
5
1000
2000
3000
4000
Q (m 3/h)
5000
SLOT DIFFUSERS,
20
N
-16
6000
7000
Air flow rate
Sound power level
Pressure drop
Slot diffuser length
Effective air velocity
SUPPLY AIR NOZZLES
LD
8000
EXTERNAL ELEMENTS
-1
6N
/3
- 16
Ordering key
LD-16N /v 1= 2.5/ m/s
L/n
ef
L WA < 35 dB(A)
4
N/
LD
LD
LD
-16
N
LD
-1 6 N
/1
/2
v ef
25
Δpt = 80 Pa/m
Number of longitudinal sections (pieces)
AIR FLOW
CONTROL UNITS
Single piece length (L = 200, 300, …, 2000)
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
1 Number of slots
2
3
4
5
6
LD-16N Floor slot diffuser
Note:
Standard colour is RAL 9010.
231
Slot diffusers
■■ Panel design slot diffusers
LDP-13, LDP-14
Application
Panel design slot diffusers are designed
for the supply of air in rooms with floor to
ceiling heights from 2.4 m to 4 m. They
are suitable for supplying either cold or
warm air.
St
RAL
9010
Description
LDP-13 and LDP-14 consists of a diffuser
face plate and a plenum box. The diffuser
face plate is commonly made of sheet
steel and its design can be suited to the
customer’s requirements. Longitudinal
guides, fitting tight to the sheet steel, are
inserted in the diffuser face plate. Cylindrical deflectors, made of recycled plastics
(ABS-antistatic) are installed in the guides,
to allow free adjustment of both air jet
discharge direction and flow rate. The
number of slots per unit depends on the
size of the unit. Diffuser face plate is powder painted in a RAL 9010 scale colour,
or, on special orders, in other colours.
The deflectors, equal to those of LD-13 or
LD-14 slot diffusers, are white or black as
standard.
The plenum box is made of galvanised
sheet steel. It is fitted with a flow rate
control damper, designed for fine air flow
rate adjustment.
A
1
φD
3
H
2
4
9
Type
• LDP-13 m = 12 mm
• LDP-14 m = 22 mm
5
φ C3
1 Plenum box
2 Volume control damper
3 Inlet spigot
4 Cross member
5 Diffuser face plate
6Guide
7 Air deflector
8 Spring clamp
8
7
6
m
8
LDP-13
232
Size
фC3
Slot length
фA
фD
H
No. of slots
400
395
300
370
198
320
8
500
495
400
470
198
320
10
600
595
500
570
248
380
12
625
620
500
570
248
380
12
LDP-14
h
No. of slots
6
25
6
8
8
7
6
h
40
VENTILATING VALVES
Slot diffusers
Special orders
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
On special order, we can deliver
diffuser face plates of any design. The
shape and dimensions are specified
in agreement with the designer or
customer.
Technical data
SWIRL DIFFUSERS,
Tecnical data are determined upon the
definition of the shape, design, number
of discharge slots and other factors.
Fast flow rate determination
(at LWA < 35 dB(A))
SLOT DIFFUSERS,
LPD-13: flow rate per 1 meter length
≈100 m³/h
LPD-14: flow rate per 1 meter length
≈150 m³/h
Ordering key
LDP-13/B/K/M/I Size 400
Size (400, 500, 600, 625)
SUPPLY AIR NOZZLES
K Plenum box
B Black deflectors
W White deflectors
EXTERNAL ELEMENTS
LDP-13
LDP-14
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
AIR FLOW
CONTROL UNITS
Note:
233
■■ Round Duct Diffuser SKD-13
Application
Round duct diffusers SKD-13 are designed for supplying air to
the rooms with large floor to ceiling heights, e.g. conference halls,
gyms, industrial halls etc. They can be installed at any location within the duct network, which renders them suitable for supplying
of either hot or cold air.
St
RAL
9010
The T register model is designed to control the supply air flow-rate
at the individual diffuser level. The T register design is recommended for installations with several round duct diffusers in one
line. In such cases, the flow-rates of the diffusers near the line
beginning should be slightly reduced, in order to supply adequate
amounts of air to the diffusers farther along the line.
Description
The duct diffuser consists of galvanised round cross-section tubes
with inserted longitudinal guides, fitting tight into the tubes. Cylindrical deflectors made of recycled plastics are inserted into the guides,
to allow continuous adjustment of discharged air direction within
the 360o range. Diffusers are available with different number of
slots. The tube is painted in a RAL 9010 scale colour, or, on special
orders, in other colours. The deflectors, equal to those of LD-13 slot
diffusers, are white or black as standard.
A T register, made of galvanised sheet steel, is inserted in the SKD-13D/T. The T register The setting piece is adjusted with a gear moved using a straight screwdriver. The gear can be accessed through
a hole in the cover.
3
2
1
1. SKD-13D
2. T-register
3. Gear
LD
L
LV
/
1000
800
1505
750
2 X 500
1755
875
2 X 600
2005
1000
2 X 800
D
Diffuser structure for lengths exceeding 1000 mm
φ
60
Lv
L
Note: фD is the diffuser internal diameter.
234
60
60
Lv
L
5
Ld
Lv
L
60
L
Accessories
250
278.4-279.3
280
300
298.4-299.3
300
315
313.4-314.3
315
355
353.3-354.3
355
400
398.3-399.3
400
450
448.2-449.3
450
500
498.2-499.3
500
560
558.1-559.3
560
630
628.1-629.3
630
710
708.0-709.3
710
800
798.1-799.3
800
900
897.0-899.3
900
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
248.5-249.3
280
Ød
Ød
Joining piece
7
r
Ød
Ød
Ød
40
7
SWIRL DIFFUSERS,
250
Ød
40
r
Ød
Ød
Ød
SLOT DIFFUSERS,
224
40
222.5-223.3
7
200
224
40
180
198.6-199.3
40
178.6-179.3
200
Note: фd is the external diameter.
Installation of SKD-13/D
Joining piece
Tube
Joining piece
SKD-13/D
40
40
L
L
87
SUPPLY AIR NOZZLES
φD
SKD-13/D
40
r
7
180
7
L
40
160
L
40 20
158.7-159.3
Elbow 900
40
160
End cover
7
150
40
L,r
148.7-149.3
40 20
d
150
40 20
Size
VENTILATING VALVES
L
SKD-13/R
SKD-13/R is constructed for installations into round ducts with
square openings.
EXTERNAL ELEMENTS
7
60
Openings
L
LV
H
No. of
slots
ΦD of
tube
L-35
580
500
100
1
150-355
545
65
680
600
150
2
355-900
645
115
880
800
200
3
6002400
845
165
880
800
250
4
6002400
845
215
AIR FLOW
CONTROL UNITS
H
H-35
Lv
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
L
Installation of SKD-13/R:
235
Ordering key
SKD-13D
Ordering key
SKD-13R
SKD-13D /B /T /ф355 /2 L=1000 mm
SKD-13R /B /T /ф355 /2 L=680 mm, H=150 mm
Length
Length
Number of slots
Number of slots
Tube diameter
Tube diameter
T-register
T-register
B Black deflectors
W White deflectors
B Black deflectors
W White deflectors
Tube
R Diffuser designed
for installation into
round ducts
Note:
• Please specify the deflector colour in your order. Other colours on customer's
request.
Example accessory specification:
Accessory: Elbow 900
Colour: RAL 9010
Quantity: 1 piece
Types of discharge
Cooling – two-sided horizontal discharge
Cooling – one sided left (horizontal)
Cooling – alternate sided horizontal
discharge
Cooling – one sided – right (horizontal)
For determination of air velocity data at different throw distances
and temperature differences, please use software for air
distribution elements calculation KLIMA ADE.
236
Heating – vertical 90°
Recommended air flow volume [m³/h]
Lwa[dB(a)]
150, 160, 180
200, 224, 250
280, 300, 315, 355
400, 450
500, 560
630, 710, 800, 900
2
26
128
128
128
128
128
128
4
30
256
256
256
256
256
256
6
34
384
384
384
384
8
35
512
512
512
10
36
640
640
640
12
37
768
768
14
38
896
896
2
35
160
160
160
160
160
160
4
38
320
320
320
320
320
320
6
40
480
480
480
480
1755
(2 x 600)
2005
(2 x 800)
8
41
640
640
640
10
46
800
800
800
12
46
960
960
14
47
2
30
192
192
192
4
32
384
384
384
576
576
SWIRL DIFFUSERS,
1505
(2 x 500)
1120
6
33
8
35
768
10
38
960
2
30
256
256
4
32
512
512
512
6
34
768
768
8
37
1024
10
40
1280
SLOT DIFFUSERS,
1000
(800)
CIRCULAR DIFFUSERS,
SQUARE DIFFUSERS
No. of
slots
256
Pipe length Ld [mm]
(Slot length Lv [mm])
Other dimensions are available on request.
SUPPLY AIR NOZZLES
The recommended air flow is 80 m³/h m per meter of active slot length.
Pressure drop determination diagram
160
140
120
witho
gister
r
with T registe
EXTERNAL ELEMENTS
V [m 3/hm slot]
100
90
80
ut T re
VENTILATING VALVES
70
60
50
40
AIR FLOW
CONTROL UNITS
30
5
10
15
20
25
30
2
5
10
15
20
25
30
40
3
15
10
20
25
30
35
40
4
15
20
25
30
35
SOUND ATTENUATORS,
SOUND ATTENUATING
LOUVRES
vduct [m/s]
1
40
5
25
30
35
40
45
50
6
35
40
45
50
55
60
Total pressure p [Pa] at the SKD-13 diffuser
v air jet velocity in the duct
237

Slot diffusers, Round duct diffusers

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