This site uses cookies and related technologies, as described in our privacy policy, for purposes that may include site operation, analytics, enhanced user experience, or advertising. You may choose to consent to our use of these technologies, or manage your own preferences.
4-way ceiling diffusers with fixed core and central screw mounting.
Brand
Cairox
Application
For air supply and exhaust in ventilation and air conditioning systems
Material
Aluminium
Colour
Standard colour white, RAL 9016
Composition
Frame and fixed inner core made of aluminium
Fixed 4-way directional blades
Mounting
Fixing by central screw in the crossbar of the plenum box.
Accessories
Opposite blade volume control damper type DSF
Plenum box with side duct connection type REF
Insulated plenum box with side duct connection type REFISO
Plenum box regulating valve CRC
Text for tender
The air supply ceiling diffusers are square with a fixed 4-way pattern with a fixed core. They are made of aluminium and steel in white powder coating RAL 9016 and are supplied with a volume control damperand a plenum box with a crossbar.
Cairox type APW-4+DSF+REF
The air supply ceiling diffusers are square with a fixed 4-way pattern with a fixed core. They are made of aluminium and steel in white powder coating RAL 9016 and are supplied with a volume control damperand a plenum box with a crossbar.
Cairox type APW-4+DSF+REF
Order example
APW-4, 444 + REF + DSF
Explanation
APW-4 = Diffuser type
444 = Diffuser size
Accessories (Optional)
REF = Plenum box
DSF = Volume control damper
Articles
Article selection assistant
Type
# pipes
AC or EC engine
Horizontal or vertical
Hydraulic connection
Article number
Type
# pipes
AC or EC engine
Horizontal or vertical
Hydraulic connection
E-shop
J035520030010
FRESH-H-1/L/2P
2
AC
Horizontal
Left
J035520030012
FRESH-V-1/L/2P
2
AC
Vertical
Left
J035520030020
FRESH-H-2/L/2P
2
AC
Horizontal
Left
J035520030022
FRESH-V-2/L/2P
2
AC
Vertical
Left
J035520030030
FRESH-H-3/L/2P
2
AC
Horizontal
Left
J035520030032
FRESH-V-3/L/2P
2
AC
Vertical
Left
J035520030040
FRESH-H-4/L/2P
2
AC
Horizontal
Left
J035520030042
FRESH-V-4/L/2P
2
AC
Vertical
Left
J035520030050
FRESH-H-5/L/2P
2
AC
Horizontal
Left
J035520030052
FRESH-V-5/L/2P
2
AC
Vertical
Left
J035520030060
FRESH-H-6/L/2P
2
AC
Horizontal
Left
J035520030062
FRESH-V-6/L/2P
2
AC
Vertical
Left
J035520030070
FRESH-H-7/L/2P
2
AC
Horizontal
Left
J035520030072
FRESH-V-7/L/2P
2
AC
Vertical
Left
J035520031010
FRESH-H-1/R/2P
2
AC
Horizontal
Right
J035520031012
FRESH-V-1/R/2P
2
AC
Vertical
Right
J035520031020
FRESH-H-2/R/2P
2
AC
Horizontal
Right
J035520031022
FRESH-V-2/R/2P
2
AC
Vertical
Right
J035520031030
FRESH-H-3/R/2P
2
AC
Horizontal
Right
J035520031032
FRESH-V-3/R/2P
2
AC
Vertical
Right
J035520031040
FRESH-H-4/R/2P
2
AC
Horizontal
Right
J035520031042
FRESH-V-4/R/2P
2
AC
Vertical
Right
J035520031050
FRESH-H-5/R/2P
2
AC
Horizontal
Right
J035520031052
FRESH-V-5/R/2P
2
AC
Vertical
Right
J035520031060
FRESH-H-6/R/2P
2
AC
Horizontal
Right
J035520031062
FRESH-V-6/R/2P
2
AC
Vertical
Right
J035520031070
FRESH-H-7/R/2P
2
AC
Horizontal
Right
J035520031072
FRESH-V-7/R/2P
2
AC
Vertical
Right
J035520032010
FRESH-H-1/L/4P
4
AC
Horizontal
Left
J035520032012
FRESH-V-1/L/4P
4
AC
Vertical
Left
J035520032020
FRESH-H-2/L/4P
4
AC
Horizontal
Left
J035520032022
FRESH-V-2/L/4P
4
AC
Vertical
Left
J035520032030
FRESH-H-3/L/4P
4
AC
Horizontal
Left
J035520032032
FRESH-V-3/L/4P
4
AC
Vertical
Left
J035520032040
FRESH-H-4/L/4P
4
AC
Horizontal
Left
J035520032042
FRESH-V-4/L/4P
4
AC
Vertical
Left
J035520032050
FRESH-H-5/L/4P
4
AC
Horizontal
Left
J035520032052
FRESH-V-5/L/4P
4
AC
Vertical
Left
J035520032060
FRESH-H-6/L/4P
4
AC
Horizontal
Left
J035520032062
FRESH-V-6/L/4P
4
AC
Vertical
Left
J035520032070
FRESH-H-7/L/4P
4
AC
Horizontal
Left
J035520032072
FRESH-V-7/L/4P
4
AC
Vertical
Left
J035520033010
FRESH-H-1/R/4P
4
AC
Horizontal
Right
J035520033012
FRESH-V-1/R/4P
4
AC
Vertical
Right
J035520033020
FRESH-H-2/R/4P
4
AC
Horizontal
Right
J035520033022
FRESH-V-2/R/4P
4
AC
Vertical
Right
J035520033030
FRESH-H-3/R/4P
4
AC
Horizontal
Right
J035520033032
FRESH-V-3/R/4P
4
AC
Vertical
Right
J035520033040
FRESH-H-4/R/4P
4
AC
Horizontal
Right
J035520033042
FRESH-V-4/R/4P
4
AC
Vertical
Right
J035520033050
FRESH-H-5/R/4P
4
AC
Horizontal
Right
J035520033052
FRESH-V-5/R/4P
4
AC
Vertical
Right
J035520033060
FRESH-H-6/R/4P
4
AC
Horizontal
Right
J035520033062
FRESH-V-6/R/4P
4
AC
Vertical
Right
J035520033070
FRESH-H-7/R/4P
4
AC
Horizontal
Right
J035520033072
FRESH-V-7/R/4P
4
AC
Vertical
Right
Dimensions
L x H [mm]
APW-4 294/150
145 x 145
APW-4 369/225
220 x 220
APW-4 444/300
295 x 295
APW-4 519/375
370 x 370
APW-4 595/445
445 x 445
Quick selection
APW-4
294/150
369/225
444/300
519/375
595/450
LxH
145x145
220x220
295x295
370x370
445x445
Q
Ak
0.0109
0.0244
0.0435
0.0679
0.0978
B
1.2
2.4
3.6
1.2
2.4
3.6
1.2
2.4
3.6
1.2
2.4
3.6
1.2
2.4
3.6
100
H=
2.7
0.52
0.17
0.1
Vz
H=
3.2
0.2
0.11
0.08
H=
3.8
0.11
0.08
0.06
Vk
2.5
X0,25
1.8
Ps
4
Lw(A)
22
150
H=
2.7
0.78
0.26
0.16
0.52
0.17
0.1
Vz
H=
3.2
0.29
0.17
0.12
0.2
0.11
0.08
H=
3.8
0.17
0.12
0.09
0.11
0.08
0.06
Vk
3.8
1.7
X0,25
2.1
1.8
Ps
10
2
Lw(A)
32
<20
200
H=
2.7
1.04
0.35
0.21
0.7
0.23
0.14
Vz
H=
3.2
0.39
0.22
0.16
0.26
0.15
0.1
H=
3.8
0.22
0.16
0.12
0.15
0.1
0.08
Vk
5.1
2.3
X0,25
2.4
2
Ps
18
4
Lw(A)
39
22
300
H=
2.7
1.04
0.35
0.21
0.78
0.26
0.16
Vz
H=
3.2
0.39
0.22
0.16
0.29
0.17
0.12
H=
3.8
0.22
0.16
0.12
0.17
0.12
0.09
Vk
3.4
1.9
X0,25
2.5
2.1
Ps
8
3
Lw(A)
32
20
400
H=
2.7
1.39
0.46
0.28
1.04
0.35
0.21
0.83
0.28
0.17
Vz
H=
3.2
0.52
0.3
0.21
0.39
0.22
0.16
0.31
0.18
0.13
H=
3.8
0.3
0.21
0.16
0.22
0.16
0.12
0.18
0.13
0.1
Vk
4.6
2.6
1.6
X0,25
2.9
2.5
2.2
Ps
15
5
2
Lw(A)
39
28
<20
600
H=
2.7
1.56
0.52
0.31
1.25
0.42
0.25
1.04
0.35
0.21
Vz
H=
3.2
0.59
0.34
0.23
0.47
0.27
0.19
0.39
0.22
0.16
H=
3.8
0.34
0.23
0.18
0.27
0.19
0.14
0.22
0.16
0.12
Vk
3.8
2.5
1.7
X0,25
3.1
2.7
2.5
Ps
10
4
2
Lw(A)
38
29
21
800
H=
2.7
2.09
0.7
0.42
1.67
0.56
0.33
1.39
0.46
0.28
Vz
H=
3.2
0.78
0.45
0.31
0.63
0.36
0.25
0.52
0.3
0.21
H=
3.8
0.45
0.31
0.24
0.36
0.25
0.19
0.3
0.21
0.16
Vk
5.1
3.3
2.3
X0,25
3.7
3.2
2.9
Ps
18
8
4
Lw(A)
45
36
28
1000
H=
2.7
2.09
0.7
0.42
1.74
0.58
0.35
Vz
H=
3.2
0.78
0.45
0.31
0.65
0.37
0.26
H=
3.8
0.45
0.31
0.24
0.37
0.26
0.2
Vk
4.1
2.8
X0,25
3.7
3.3
Ps
12
5
Lw(A)
41
34
1200
H=
2.7
2.5
0.83
0.5
2.09
0.7
0.42
Vz
H=
3.2
0.94
0.54
0.38
0.78
0.45
0.31
H=
3.8
0.54
0.38
0.29
0.45
0.31
0.24
Vk
4.9
3.4
X0,25
4.2
3.7
Ps
17
8
Lw(A)
46
38
Symbols and specifications
Q = Air volume in m³/h
Ak = Effective surface (free area) in m²
B = Distance between the diffusers in m
H = Installation height of the diffusers in m
Vz = Maximum velocity at the occupied zone according to distance between the diffusers and installation height in m/s
Vk = Average effective velocity through the diffuser in m/s
X0.25 = Throw length in m at an end velocity Vt of 0,25m/s
µPs = Static pressure loss given in P
Lw(A) = Acoustic power in dB(A)
The throw X0.25 is given at an end velocity of 0.25m/s for a smooth ceiling without any obstacles.
The values are given for isothermal supply air. Throw distances for cooling conditions at -11K can be calculated by dividing the X0.25 values with factor 1.1. For heating purposes at Dt of +11K a multiplier of 1.1 should be applied to the given X0.25 value.
In order to achieve a high comfort level, selections can be made according to the maximal velocity at the occupied zone Vz. These values are given at distances between diffusers B and installation heights H. Velocities Vz lower than, or equal to 0,25m/s at the occupied zone are advised.
The pressure losses Ps are given for diffusers without damper of with fully opened damper.
The acoustic power values Lw(A) are given for diffusers without damper of with fully opened damper without room attenuation. Acoustic powers below 20dB(A) are mentioned as "<20" in the tables.
For all special requirements, please contact our engineering office.