1. art and entertainment
2. visual art and design
3. design

TB-100202
Swirl Diffusers
Product and Applications
Trox USA, Inc.
926 Curie Drive
Alpharetta, Georgia 30005-8369
USA
Telephone 770 - 569 -14 33
Facsimile 770 - 569 -14 35
e-mail tb10@troxusa.com
General Information · Contents
Contents
General Information
Available Models
Operation/Applications
Selection Procedures
TDF/TDV Series Diffusers
VDW Series Diffusers
2
3
5
6
8
12
RFD Series Diffusers
RFD-D Series Diffusers
DCS Series Diffusers
VDL/VDZ Series Diffusers
High Air Change Applications
Swirl Terminal Filters
16
20
24
28
34
38
TDF Series
RFD-D Series
TROX “Swirl” type ceiling diffusers are designed to provide
optimum mixing of conditioned supply air with that of the
space, thereby minimizing draft temperatures and velocities
within the occupied or process levels.
These diffusers rely on a high velocity cyclonic discharge
pattern to increase the induction of room air and rapidly
dissipate temperature and velocity differentials associated with
the supply air stream.
Their unique design enables them to create room air induction
ratios significantly greater than those of conventional diffusers.
involving high air changes or high sensible loads. They are
also capable of supplying significant airflow quantities (see
page 34 for high air change applications) while minimizing
space air velocity disturbances in applications such as animal
research laboratories.
Swirl diffusers have been succesfully used in European
process and comfort conditioning applications for over thirty
years. They are widely employed for critical process
applications such as fume hood laboratories, clean rooms,
industrial drying facilities and hospital operating room
applications. In fact, they are ideal for use in any application
2
Swirl diffusers are available in a variety of shapes and sizes to
fit any application or aesthetic requirement. Unlike conventional
outlets, swirl diffusers do not require a ceiling surface to
properly operate. Certain models incorporate automatic
adjustment of their discharge pattern to facilitate heating and
cooling applications in high ceiling areas.
Swirl diffusers can also be fitted with high efficiency particulate
filters for clean room applications (see page 38 for further
details).
Available Models
TDF Series
TDV Series
Fixed Horizontal Discharge
(See Pages 8 through 11 for details)
Adjustable Horizontal Discharge
(See Pages 8 through 11 for details)
VDW Series
RFD Series
Adjustable Horizontal Discharge
(See Pages 12 through 15 for details)
Fixed Horizontal Discharge
(See Pages 16 through 19 for details)
3
Available Models
4
RFD-D Series
DCS Series
Fixed Horizontal Discharge
(See Pages 20 through 23 for details)
Fixed Horizontal Discharge
(See Pages 24 through 27 for details)
VDL Series
VDZ Series
Adjustable Horizontal/Vertical Discharge
(See Pages 28 through 33 for details)
Adjustable Horizontal/Vertical Discharge
(See Pages 30 through 33 for details)
Applications
Swirl Diffuser Operational Characteristics
Although offered in various shapes and sizes,TROX Swirl diffusers all share a similar core design. A series of linear slots are
aligned radially around the center of the diffuser face. These
slots divide the supply air to the diffuser into a number of high
velocity jets. This increase in supply jet surface area enables
the diffuser to induce large quantities of room air. In most
designs, the slots are subdivided along their length to further
enhance the induction rate.
The supply jets are also discharged in a cyclonic pattern,
which forces the air jets to travel in a rotating manner around
the diffuser center. During this travel, the jets induce additional
room air and rapidly dissipate the velocity and temperature
differentials between the jet and the ambient air, minimizing the
distance at which high velocities and/or drafts exist. This high
induction performance also enables them to perform equally
well without an adjacent ceiling surface, making swirl diffusers
an excellent choice for areas where exposed ductwork is
employed.
The unique discharge characteristics of swirl diffusers make
them ideal for high air change applications involving air change
rates up to eighty (80) per hour. A section of this brochure is
dedicated to such applications (see page 34).
TROX also employs swirl technology in diffusers designed for
raised floor and underseat applications. For more information
on these products, contact your local TROX representative.
Swirl Diffuser Application Guide
Application
Facility types
Low Temperature Air Distribution
High Air Change Rates(see pg. 34)
VDW
RFD
RFD-D DCS
VDL
VDZ
Clean Areas, Labs
Animal Laboratories
High Sensible Cooling Loads
Offices, Schools, etc.
High Ceiling Heating/Cooling
Convention Halls, Gyms
Legend
TDV
Offices, Schools, etc.
Minimal Velocity Disturbance
Clean Room Applications
TDF
Labs, Hospitals, etc.
Ideal Solution for this Application
Rarely Used in this Application
Frequently Used in this Application
Suitable Product not Available
5
Technical Data and Performance Notes
European standards require manufacturers of air diffusion
products to provide technical data that allows the prediction of
local velocities and draft temperatures at any critical point in
the space. In accordance with this, TROX has tested its swirl
diffusers under a variety of supply air conditions and is able
to provide data that will enable the designer to estimate such
local thermal conditions.
Local velocities can be estimated by using the throw data in
the individual diffuser performance tables. The table below
presents a thermal decay factor (KT) that can be used to
estimate local temperatures various distances from the diffuser.
The following equation to predict the temperature differential
between the supply air jet and the ambient air at any given
distance X from the diffuser discharge:
∆TX = KT x (
AEFF / (X1 or X2) x ∆TZ
where ∆TZ is the initial temperature difference between the
supply and room air. AEFF is the effective outlet area of the
diffuser and is listed in the individual diffuser performance
tables.
Nomenclature
A, B Distance between opposing diffusers
B
A
A
X2
A/2
Distance from diffuser to point X midway between
diffusers plus distance H1 from ceiling
X2
Distance from diffuser to point L along wall
VZ
Jet velocity at point of discharge into room
∆TZ
Temperature differential between supply and room air
at point of discharge from diffuser
VX
Local velocity at point X
∆TX
Predicted temperature differential between the
supply air jet and ambient room air at point X
VL
Local velocity at point L
∆TL
Predicted temperature differential between the
supply air jet and ambient room air at point L
vZ
∆TZ
X1
H1
X1
X1
X
X
vX
∆TX
vL
∆TL
L
Thermal Decay Constant
Diffuser Type
TDF
TDV
VDW
RFD
RFD-D
DCS
VDL
VDZ
Thermal Decay Constant (KT)
1.54
2.00
0.77
0.86
0.85
1.06
1.90 *
1.90 *
* Applies to cooling applications only
6
Diffuser Selection
Selection Example 1
TDF swirl diffusers (top entry) are to be located (as shown
at right) in a laboratory with a nine (9) foot ceiling. The
diffusers will handle 650 CFM each and velocities at the
top of the fume hood sash (6 foot level) cannot exceed
60 fpm. The supply air is 55 °F and the room temperature
is 72 °F.
7
8
4
X2
vZ
∆TZ
X1
X1
3
Performance data for the TDF is shown on page 10. A size
605 diffuser is considered first as it can be integrated with
the lay-in ceiling grid.
X
X
At 650 CFM, the diffuser produces a throw (to 50 fpm) of
7 feet, therefore, the velocities at points L and X (the top of
the hood sash) will be 50 fpm or less. Using the equation
for thermal decay (X1 and X2 equal 7 feet):
vL
∆TL
vX
∆TX
L
Layout for Example 1
∆TX = ∆TL = 1.54 x (
.43 / 7 ) x 17 = 2.45 °F
Selection Example 2
VDL swirl diffusers are to be used for heating and cooling
a convention space. The diffusers are mounted on exposed
duct drops 24 feet above the floor and must handle
1200 CFM each. Cool air is supplied at 55 °F while warm
air is introduced at 95 °F. The room temperature is to be
maintained at 75 °F. Diagrams illustrating the application
can be found at the right.
20
10
∆TZ = -20F
24
vX
∆TX
Diffuser selection in high ceiling applications requiring both
heating and cooling are usually based on the heating mode
as the diffuser must be capable of projecting the warm air
stream to the occupied levels of the space.
Cooling
Mode
6
Performance data for the VDL is shown on page 32. A
size 400 unit will perform the required operation at a space
NC of 34.
20
10
∆TZ = +20F
Performance of the diffusers in the cooling mode indicate
throw values (to a 50 fpm terminal velocity) of about
10 feet, therefore, no drafts should be experienced in the
occupied zone (lower 6 feet).
The maximum vertical throw of the diffuser shown in the
performance table on page 32 represents the vertical
projection of the air stream (based on a 20 °F temperature
differential). At this point, there is no temperature difference
between the supply and room air. For the diffuser being
considered, the maximum throw is 26 feet, which indicates
that the heated air stream will indeed penetrate the
occupied zone. The diffuser selection is valid.
24
6
VMAX
∆TVMAX
Heating
Mode
Layout for Example 2
7
Product Information · Application
Product Information Guide
Dimensional Information
Performance Data
Specification Text
Ordering Information
Features
9
10
11
11
• TDF series features a fixed swirl discharge pattern. Suitable
for surface mount or lay-in applications.
• TDV series incorporates adjustable pattern control elements
to allow field discharge pattern modification. Suitable for
surface mount or lay-in applications.
• Size 605 models are specifically designed to fit 2 x 2 lay-in
ceiling modules.
• TDF and TDV models include a top entry (type V) plenum
box suitable for connection to round duct. Side entry plenum
boxes (type H) are also available.
• Also available with integral HEPA filter (see page 38).
Construction
• Material: Galvanized Steel
• Finish: White powder coat paint.
TDF and TDV Series
Model TDF
Model TDV
Product Applicability
More Applicable
0
1
2
3
4
5
6
7
8
9
10
Low Temperature Air Distribution:
High Air Change Rates:
Minimal Velocity Disturbance:
High Sensible Loads:
High Ceiling Applications:
Model Availability
Mounting:
Surface:
Lay-in:
Filter Terminal:
Fixed Pattern
(Top Entry Plenum)
Adjustable Pattern
(Top Entry Plenum)
Fixed Pattern
Adjustable Pattern
(Side Entry Plenum)
Direct Duct
Connection
TDF-_-Z-V
TDV-_-Z-V
TDF-_-Z-H
TDV-_-Z-H
Not Available
TDF-Q-Z-V/605 *
TDV-Q-Z-V/605 *
TDF-Q-Z-H/605 *
TDV-Q-Z-H/605 *
Not Available
See page 38
Not Available
See page 38
Not Available
Not Available
* Designed to fit standard 2 x 2 (1 inverted t-bar) ceiling modules
8
Dimensional Information
TDF- and TDV- SilentAir
Models TDF-R and TDV-R
D1ø
R1 ø
Dimensions
Models TDF-Q and TDV-Q
Size
D1ø
R1ø
Q
400
13 1/4 15 3/4 15 5/8 500
17 5/16 19 5/8 19 5/8 600
20
7/8 5/8 23 1/2 605
20 7/8 23 5/8 23 3/4 625
20 7/8 1/2 24 1/2 23
24
D1 ø
Q
Plenum / Entry Options
K
K
Dø
H
Aø
Aø
H4
H1
8
H3
H2
Q
Type V Plenum
R1ø
Type H Plenum
TDF-Q and TDV-Q Models
Type H Plenum
TDF-R and TDV-R Models
Size
Dø
Aø
K
H
H1
H2
H3
H4
R1ø
Q
400
7 7/8 7 7/8 14 5/8 1 1/2 13 3/8 1 5/8 3 15/16 12 15 3/4 15 5/8 500
7 7/8 7 7/8 18 3/4 1 1/2 13 3/8 1 5/8 3 15/16 12 19 5/8 19 5/8 600
9 3/4 9 3/4 22 3/8 1 1/2 15 1/4 1 5/8 3 15/16 13 7/8 23 5/8 23 1/2 605
9 3/4 9 3/4 22 3/8 1 1/2 15 1/4 1 5/8 3 15/16 13 7/8 23 5/8 23 3/4 625
9 3/4 9 3/4 22 3/8 1 1/2 15 1/4 1 5/8 3 15/16 13 7/8 24 1/2 24 1/2 9
Performance Data
TDF and TDV SilentAir
TDF/TDV Models with Type V (Top Entry) Plenum
Listed
Size
400
500
600
605
625
Nominal Inlet
8
8
10 AEFF
(ft2)
Neck Velocity (fpm)
400
500
600
700
800
900
1000
1200
1400
Outlet Airflow (cfm)
140
175
210
245
280
315
350
420
490
Total Pressure (in.w.g.)
.040
.063
.091
.124
.162
.205
.253
.364
.496
Outlet NC
<15
<15
17
21
24
28
32
40
48
Throw (ft.)
1-1-2
1-1-3
1-2-3
1-2-4
1-2-4
2-2-5
2-3-5
2-3-6
2-4-7
Outlet Airflow (cfm)
140
175
210
245
280
315
350
420
490
Total Pressure (in.w.g.)
.028
.044
.063
.086
.112
.142
.175
.252
.343
Outlet NC
<15
<15
17
20
22
24
27
31
36
Throw (ft.)
1-1-1
1-1-1
1-1-3
1-1-3
1-2-3
1-2-4
1-2-4
2-3-5
2-3-6
Outlet Airflow (cfm)
218
273
327
382
436
491
545
654
763
Total Pressure (in.w.g.)
.036
.059
.085
.116
.151
.191
.236
.340
.462
Outlet NC
<15
<15
18
21
24
27
30
36
42
Throw (ft.)
1-1-1
1-1-1
1-2-3
1-2-4
1-2-4
2-2-5
2-3-5
2-3-7
3-4-8
Neck Velocity (fpm)
400
500
600
700
800
900
1000
1200
1400
Outlet Airflow (cfm)
140
175
210
245
280
315
350
420
490
Total Pressure (in.w.g.)
.049
.077
.110
.150
.196
.248
.307
.442
.601
Outlet NC
<15
<15
17
21
25
29
33
42
50
Throw (ft.)
1-1-2
1-1-3
1-2-3
1-2-4
1-2-4
2-2-5
2-3-5
2-3-8
2-4-7
Outlet Airflow (cfm)
140
175
210
245
280
315
350
420
490
Total Pressure (in.w.g.)
.030
.046
.067
.091
.118
.150
.185
.266
.362
Outlet NC
<15
<15
<15
17
20
24
27
34
41
Throw (ft.)
1-1-1
1-1-1
1-1-3
1-1-3
1-2-4
1-2-4
1-2-4
2-3-5
2-3-6
Outlet Airflow (cfm)
218
273
327
382
436
491
545
654
763
Total Pressure (in.w.g.)
.034
.053
.077
.104
.136
.172
.213
.306
.417
Outlet NC
<15
<15
<15
<15
17
22
26
35
43
Throw (ft.)
1-1-1
1-1-1
1-2-3
1-2-4
1-2-4
2-2-5
2-3-5
2-3-7
3-4-8
.208
.224
.430
TDF/TDV Models with Type H (Side Entry) Plenum
Listed
Size
400
500
600
605
625
Nominal Inlet
8
8
10 AEFF
(ft2)
.208
.224
.430
Performance Notes:
1. NC shown includes 10 dB Room Attenuation.
2. Throw values shown are to terminal velocities of 150,
100 and 50 fpm.
10
Thermal Decay Constant (KT)
The Thermal Decay Constant (KT) shown on page 6 can be
used to predict the temperature differential between supply
and ambient air at various distances from the diffuser. See
page 6 for further information and instructions regarding
the application of this factor.
Specifications · Ordering Information
TDF and TDV Series
Suggested Specifications
TDF Series
Furnish and install TROX model TDF swirl diffusers in sizes
and quantities shown on plans and schedules. Diffuser
assembly shall include a high induction diffuser face
comprised of fixed radially aligned deflection blades.
Diffuser shall be capable of achieving an induction ratio of
at least 8 parts room air to 1 part primary air within a radius
of six (6) feet from the diffuser outlet. Diffuser shall be
capable of allowing integration into the specified ceiling
system.
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
TDV Series
Furnish and install TROX model TDV swirl diffusers in sizes
and quantities shown on plans and schedules. Diffuser
assembly shall include a high induction diffuser face
comprised of adjustable radially aligned deflection blades.
Diffuser shall be capable of achieving an induction ratio of
at least 8 parts room air to 1 part primary air within a radius
of six (6) feet from the diffuser outlet. Diffuser shall be
capable of allowing integration into the specified ceiling
system.
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
Diffuser shall be furnished with a factory fabricated top entry
plenum with balancing damper; suitable for connection to
rigid or flexible round ductwork.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel. Note: Plenum must be installed before
ceiling when mounted in drywall!
Diffuser shall be furnished with a factory fabricated
top entry plenum with balancing damper; suitable for
connection to rigid or flexible round ductwork.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel. Note: Plenum must be installed before
ceiling when mounted in drywall!
Ordering Code
TDF - Q - Z - H
Model Number
TDF = Fixed Pattern
TDV = Adjustable Pattern
Facial Appearance
R = Round Face
Q = Square Face
IE
EEO
EE
EP
IE
EEO
EE
EP
/
605
TE
EE
EE
EE
EZE
EE
EE
EE
EU
TE
EE
EE
EZE
EE
EE
U
Nominal Size
400 ( 8 Nominal
500 ( 8 Nominal
600 (10 Nominal
605 * (10 Nominal
625 (10 Nominal
Inlet
Inlet
Inlet
Inlet
Inlet
Dia.)
Dia.)
Dia.)
Dia.)
Dia.)
* Fits standard 2 x 2 ceiling tile
Inlet Type
V = Top Entry Plenum
(Standard)
H = Side Entry Plenum
(Optional)
11
Product Information · Application
Product Information Guide
Dimensional Information
Performance Data
Specification Text
Ordering Information
Features
13
14
15
15
• VDW series features an adjustable swirl discharge pattern.
Suitable for surface mount or lay-in.
• Incorporates adjustable pattern control elements to allow
field discharge pattern modification.
• Size 605 models are specifically designed to fit 2 x 2 lay-in
ceiling modules.
• Includes a top entry (type V) plenum box suitable for
connection to round or flexible duct. Side entry plenum
boxes (type H) are also available.
• Also available with integral HEPA filter (see page 38).
Construction
• Material: Galvanized Steel
• Finish: White powder coat paint.
VDW Series
VDW-Q Models
White control elements shown
VDW-R Models
Black control elements shown
Product Applicability
More Applicable
0
1
2
3
4
5
6
7
8
9
10
Low Temperature Air Distribution:
High Air Change Rates:
Minimal Velocity Disturbance:
High Sensible Loads:
High Ceiling Applications:
Model Availability
Mounting:
Surface:
Lay-in:
Filter Terminal:
Square Face
(Top Entry Plenum)
Round Face
(Top Entry Plenum)
Square Face
(Side Entry Plenum)
Round Face
(Side Entry Plenum)
Direct Duct
Connection
VDW-Q-Z-V
VDW-R-Z-V
VDW-Q-Z-H
VDW-R-Z-H
Not Available
VDW-Q-Z-V/605 *
Not Available
VDW-Q-Z-H/605 *
Not Available
Not Available
See Page 38
Not Available
See Page 38
Not Available
Not Available
* Designed to fit standard 2 x 2 (1 inverted t-bar) ceiling modules
12
Dimensional Information
VDW Series
Size 300 x 8
Size 400 x 16
113/4
1113/16
15 3/4
Size 500 x 24
1511/16
Size 605 x 24
19 5/8
19 11/16
23 5/8
Size 605 x 48
23 3/4
Size 825 x 72
32 1/2
23 3/4
23 5/8
Plenum Options
2
2
VDW - R- ... H Plenum
VDW - ... V Plenum
VDW - Q- ... H Plenum
Nominal Size
Q
Rø
Pø
K
Bø
Dø
H2
300 x 8
11 3/4 11 13/16 10 15/16 11 7/16 11 6 1/4 9 7/8 8
400 x 16
15 5/8 15 3/4 14 1/4 14 11/16 14 5/16 7 13/16 11 5/8 8
500 x 24
19 5/8 19 11/16 18 1/8 18 3/4 18 3/16 7 13/16 11 5/8 8
605 x 24
23 3/4 23 5/8 22 22 5/16 22 9 3/4 13 5/8 8
605 x 48
23 3/4 23 5/8 22 3/4 23 1/4 22 3/4 13 5/8 12 825 x 72
32 1/2 N/A
N/A
31 3/4 31 5/16 16 3/16 N/A
9
12 5/16 H1
13
Performance Data
VDW Series
Listed
Size
300 x 8
Inlet
6
AEFF
(ft2)
Neck Velocity (fpm)
600
800
1000
1200
1400
1600
1800
2000
2400
Outlet Airflow (cfm)
45
60
75
90
105
121
136
151
181
Total Pressure (in.w.g.)
.026
.046
.072
.104
.142
.185
.234
.289
.417
Outlet NC
<15
<15
<15
<15
18
23
28
33
43
Throw (ft.)
1-1-1
1-1-1
1-1-1
1-1-2
1-1-2
1-1-2
1-1-2
1-1-3
1-2-3
90
121
151
181
211
241
271
301
362
Total Pressure (in.w.g.)
.027
.048
.075
.108
.147
.192
.243
.300
.432
Outlet NC
<15
<15
<15
<15
18
23
27
32
41
Throw (ft.)
1-1-1
1-1-1
1-1-2
1-1-2
1-1-3
1-1-3
1-2-3
1-2-4
1-2-4
Outlet Airflow (cfm)
136
181
226
271
316
362
407
452
542
Total Pressure (in.w.g.)
.033
.058
.091
.131
.179
.234
.296
.365
.526
Outlet NC
<15
<15
16
21
26
32
37
42
53
Throw (ft.)
1-1-1
1-1-1
1-1-2
1-1-3
1-2-3
1-2-4
1-2-4
2-2-5
2-3-5
Outlet Airflow (cfm)
190
254
317
381
444
508
571
635
762
Total Pressure (in.w.g.)
.030
.054
.084
.121
.165
.215
.272
.336
.484
Outlet NC
<15
<15
<15
19
25
30
36
41
52
Throw (ft.)
1-2-3
1-2-4
2-3-6
2-3-7
3-4-8
Outlet Airflow (cfm)
252
336
420
504
587
671
755
839
1007
Total Pressure (in.w.g.)
.041
.073
.114
.164
.224
.292
.370
.457
.658
Outlet NC
<15
<15
16
22
28
34
39
45
57
Throw (ft.)
1-1-1
1-1-1
2-3-5
2-3-6
2-4-7
3-4-8
3-5-9 3-5-10 4-6-12
Outlet Airflow (cfm)
471
628
785
943
1100
1257
1414
1571
1885
Total Pressure (in.w.g.)
.050
.088
.138
.199
.270
.353
.447
.552
.794
Outlet NC
<15
18
24
31
38
44
51
58
71
Throw (ft.)
1-1-1
1-1-1
.075
Outlet Airflow (cfm)
400 x 16
500 x 24
605 x 24
605 x 48
825 x 72
8
8
10 10 12 .151
.226
.317
.420
.785
Performance Notes:
1. NC shown includes 10 dB Room Attenuation.
2. Throw values shown are to terminal velocities of 150,
100 and 50 fpm.
3. Data above is applicable to either a top (V) or side (H)
entry plenum.
14
3-4-9 3-5-10 4-6-11 4-7-13
3-4-8 3-5-10 4-6-11 4-6-13 5-7-14 5-8-16 6-10-19
Thermal Decay Constant (KT)
The Thermal Decay Constant (KT) shown on page 6 can be
used to predict the temperature differential between supply
and ambient air at various distances from the diffuser. See
page 6 for further information and instructions regarding
the application of this factor.
Specifications · Ordering Information
VDW Series
Suggested Specifications
VDW-Q (Square Face) Models
Furnish and install TROX model VDW swirl diffusers in
sizes and quantities shown on plans and schedules.
Diffuser assembly shall include a high induction diffuser
face comprised of adjustable radially aligned deflection
blades. Diffuser shall be capable of achieving an induction
ratio of at least 8 parts room air to 1 part primary air within
a radius of six (6) feet from the diffuser outlet. Diffuser face
shall be square and capable of allowing integration into the
specified ceiling system.
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
VDW-R (Round Face) Models
Furnish and install TROX model VDW swirl diffusers in
sizes and quantities shown on plans and schedules.
Diffuser assembly shall include a high induction diffuser
face comprised of adjustable radially aligned deflection
blades. Diffuser shall be capable of achieving an induction
ratio of at least 8 parts room air to 1 part primary air within
a radius of six (6) feet from the diffuser outlet. Diffuser face
shall be round and suitable for surface or exposed duct
mounting.
Diffuser shall be furnished with a factory fabricated
top entry plenum with balancing damper; suitable for
connection to rigid or flexible round ductwork.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel. Note: Plenum must be installed before
ceiling when mounted in drywall!
Diffuser shall be furnished with a factory fabricated
top entry plenum with balancing damper; suitable for
connection to rigid or flexible round ductwork.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel. Note: Plenum must be installed before
ceiling when mounted in drywall!
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
Ordering Code
VDW - Q - Z - H
IE
EEO
EE
EP
Inlet Type
V = Top Entry Plenum (Standard)
H = Side Entry Plenum (Optional)
605 x 24
/
0
EI
OEE
EPE
Face Type
Q = Square Face
R = Round Face
/
IE
EEO
EE
EP
TE
EE
EE
EE
EE
ZE
EE
EE
EE
EE
U
Nominal
300 x 8
400 x 16
500 x 24
605 x 24
605 x 48
825 x 72
Control Element Color
0
Black (standard)
Q21 White (optional)
Size
12 16 20 24 24 32 Face,
Face,
Face,
Face,
Face,
Face,
8 Air Slots
16 Air Slots
24 Air Slots
24 Air Slots
48 Air Slots
72 Air Slots *
* Round Face Model Not Available
15
Product Information · Application
Product Information Guide
Dimensional Information
Performance Data
Specification Text
Ordering Information
Features
• Model RFD-R is designed for surface mount or exposed
duct applications.
• Model RFD-Q is designed for surface mount applications.
• RFD-R-EP models are designed for lay-in applications.
• RFD models with type K entry can be direct connected to
flexible duct. All models are also available with (type H) side
entry plenum (optional).
17
18
19
19
Construction
• Material: Galvanized Steel
• Finish: White powder coat paint.
RFD Series
Model RFD-Q
Model RFD-R
Product Applicability
More Applicable
0
1
2
3
4
5
6
7
8
9
10
Low Temperature Air Distribution:
High Air Change Rates:
Minimal Velocity Disturbance:
High Sensible Loads:
High Ceiling Applications:
Model Availability
Square Face
Round Face
Direct Duct
Connection
Side Entry Plenum
Surface:
RFD-Q
RFD-R
RFD- __-K
RFD- __-H
Lay-in:
RFD-EP
Not Available
RFD-EP-K
RFD-EP-H
Not Available
RFD-R
RFD-R-K
RFD- R -H
Mounting:
Exposed Duct:
16
Dimensional Information
RFD Series
Model RFD-R
Dø
R1 ø
Model RFD-Q
Dimensions
Dø
Size
Dø
R1ø
Q
125
4 7/8 6 1/4 7 3/4 160
6 1/4 7 3/4 7 3/4 200
7 13/16 9 1/2 9 3/4 250
9 3/4 11 5/8 11 3/4 315
12 3/8 14 3/8 15 5/8 400
15 9/16 17 3/4 19 5/8 Q
Model RFD-EP
Dø
23 3/4
Plenum / Entry Options
K
Aø
H1
Dø
H
H3
H2
Type K (Standard)
Type H Plenum
Size
Dø
Aø
K
H
H1
H2
H3
125
4 7/8 3 7/8 8 1/2 2
10 1/4 2 1/2 5
160
6 1/4 4 7/8 10 1/2 2 1/16 11 1/4 2 1/2 5
200
7 13/16 6 1/4 11 1/2 2 1/16 12 1/2 2 1/2 5
250
9 3/4 7 7/8 18 3/4 2
14 1/4 2 1/2 5
315
12 3/8 9 7/8 22 3/8 2 1/16 16 1/4 2 1/2 5
400
15 9/16 12 3/8 22 1/4 2 1/16 19 2 1/2 5
17
Performance Data
RFD Series
Listed Nominal Inlet
Size Diameter (in.)
125
5
AEFF
(ft2)
Neck Velocity (fpm)
200
300
400
500
600
700
800
900
1000
Outlet Airflow (cfm)
27
41
54
68
82
95
109
122
136
Total Pressure (in.w.g.)
.011
.024
.043
.067
.097
.132
.172
.218
.269
Outlet NC
<15
<15
<15
20
24
29
33
38
42
Throw (ft.)
1-1-1
1-1-1
1-1-2
1-1-2
1-1-3
1-2-3
1-2-4
1-2-4
1-2-4
39
59
79
99
118
138
158
177
197
Total Pressure (in.w.g.)
.009
.021
.037
.058
.083
.113
.148
.187
.231
Outlet NC
<15
<15
<15
17
21
24
27
31
34
Throw (ft.)
1-1-1
1-1-1
1-1-2
1-1-2
1-1-3
1-2-3
1-2-4
1-2-4
2-2-5
70
105
140
175
210
245
280
315
350
Total Pressure (in.w.g.)
.014
.031
.054
.085
.123
.167
.218
.276
.340
Outlet NC
<15
16
19
21
24
27
30
32
35
Throw (ft.)
1-1-1
1-1-1
1-1-3
1-2-3
1-2-4
2-2-5
2-3-6
2-3-6
2-3-7
Outlet Airflow (cfm)
109
164
218
273
327
382
436
491
545
Total Pressure (in.w.g.)
.015
.033
.059
.092
.132
.180
.235
.297
.367
Outlet NC
<15
<15
18
22
26
30
35
39
43
Throw (ft.)
1-1-1
1-1-1
1-2-3
1-2-4
2-3-5
2-3-6
2-3-7
3-4-8
3-4-8
Outlet Airflow (cfm)
157
236
314
393
471
550
628
707
785
Total Pressure (in.w.g.)
.012
.028
.049
.077
.111
.151
.197
.249
.308
Outlet NC
<15
<15
<15
20
24
29
33
38
42
Throw (ft.)
1-1-1
1-1-1
2-2-5
2-3-6
2-4-7
Outlet Airflow (cfm)
280
420
560
700
840
980
1120
1260
1400
Total Pressure (in.w.g.)
.019
.042
.075
.118
.170
.231
.301
.381
.471
Outlet NC
<15
<15
21
28
35
42
49
56
63
Throw (ft.)
1-1-1
1-1-1
2-3-6
2-4-7
.037
Outlet Airflow (cfm)
160
6
.065
Outlet Airflow (cfm)
200
250
315
400
8
10 12 16 .099
.161
.285
.382
Performance Notes:
1. NC shown includes 10 dB Room Attenuation.
2. Throw values shown are to terminal velocities of 150,
100 and 50 fpm.
3. Data shown is applicable to type K or H inlet
configuration
18
3-4-8 3-5-10 4-5-11 4-6-12
3-4-8 3-5-10 4-6-11 4-6-13 5-7-14
Thermal Decay Constant (KT)
The Thermal Decay Constant (KT) shown on page 6 can be
used to predict the temperature differential between supply
and ambient air at various distances from the diffuser. See
page 6 for further information and instructions regarding
the application of this factor.
Specifications · Ordering Information
RFD Series
Suggested Specifications
Model RFD-Q
Furnish and install TROX model RFD-Q diffusers in sizes
and quantities shown on plans and schedules. Diffuser
assembly shall include a high induction diffuser core
comprised of radially aligned deflection blades. Diffuser
shall be capable of achieving an induction ratio of at least
8 parts room air to 1 part primary air within a radius of six
(6) feet from the diffuser outlet. Diffuser face shall be
square and capable of allowing integration into a drywall
ceiling system.
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
Model RFD-R
Furnish and install TROX model RFD-R diffusers in sizes
and quantities shown on schedules and plan. Diffuser
assembly shall include a high induction diffuser core
comprised of radially aligned deflection blades. Diffuser
shall be capable of achieving an induction ratio of at least
8 parts room air to 1 part primary air within a radius of six
(6) feet from the diffuser outlet. Diffuser face shall be round
for integration into a drywall ceiling or mounting on an
exposed duct drop.
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
Diffuser shall be furnished with a factory fabricated
top entry suitable for connection to rigid or flexible round
ductwork.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel. Note: Plenum must be installed before
ceiling when mounted in drywall!
Diffuser shall be furnished with a factory fabricated
top entry suitable for connection to rigid or flexible round
ductwork.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel. Note: Plenum must be installed before
ceiling when mounted in drywall!
Ordering Code
RFD - R - H
RFD-R = Round Face
(Surface or Exposed Duct Mounting)
RFD-EP = Extended Panel
(Lay -in Mounting in 24 x 24 Tile)
Inlet Type
K = No Plenum (Standard)
H = Side Entry Plenum (Optional)
T
EE
EE
EE
EE
EZE
EE
EE
EE
EUE
Model Number
RFD-Q = Square Face
(Surface Mounting)
/
250
TE
EE
EE
EE
EE
EZE
EE
EE
EE
EE
EU
Nominal Size *
125 ( 5 Nominal
160 ( 6 Nominal
200 ( 8 Nominal
250 (10 Nominal
315 (12 Nominal
400 (16 Nominal
Inlet
Inlet
Inlet
Inlet
Inlet
Inlet
Dia.)
Dia.)
Dia.)
Dia.)
Dia.)
Dia.)
* When furnished with Type K inlet
(standard)
IE
EE
OE
EE
P
19
Product Information · Application
Product Information Guide
Dimensional Information
Performance Data
Specification Text
Ordering Information
Features
• RFD- .. -D series diffusers incorporate a bell mouth discharge
for enhanced perfomance and aesthetics.
• Model RFD-R-D is designed for surface mount or exposed
duct applications.
• Model RFD-Q-D is designed for surface mount applications.
• RFD-EP-D models are designed for lay-in applications.
• Models with type K entry can be direct connected to flexible
duct. RFD-R-D and RFD-Q-D models are also available with
type H side entry plenums (optional).
21
22
23
23
Construction
• Material: Galvanized Steel
• Finish: White powder coat paint.
RFD-..-D Series
Model RFD - R - D
Model RFD - EP - D
Product Applicability
More Applicable
0
1
2
3
4
5
6
7
8
9
10
Low Temperature Air Distribution:
High Air Change Rates:
Minimal Velocity Disturbance:
High Sensible Loads:
High Ceiling Applications:
Model Availability
Square Face
Round Face
Direct Duct
Connection
Side Entry Plenum
Surface:
RFD-Q-D
RFD-R-D
RFD- _-D-K
RFD- _-D-H
Lay-in:
RFD-EP-D
Not Available
RFD-EP-D-K
RFD-EP-D-H
Not Available
RFD-R-D-K
RFD-R-D-K
Not Applicable
Mounting:
Exposed Duct:
20
Dimensional Information
RFD-D Series
Model RFD-R-D
Dø
R1 ø
Model RFD-Q-D
Dimensions
Dø
Q
Model RFD-EP-D
Size
Dø
R1ø
Q
125
4 7/8 8
7 3/4 160
6 1/4 10 9 3/4 200
7 13/16 12 9 3/4 250
9 3/4 13 3/4 11 3/4 315
12 3/8 17 3/4 15 5/8 400
15 9/16 22 7/8 19 5/8 Dø
23 3/4
Plenum / Entry Options
K
Aø
H1
Dø
H
H3
H2
Type K (Standard)
Type H Plenum
Size
Dø
Aø
K
H
H1
H2
H3
125
4 7/8 3 7/8 8 1/2 2 15/16 11 1/4 3 1/2 6 1/8 160
6 1/4 4 7/8 10 1/2 3 1/16 12 1/4 3 1/2 6 1/8 200
7 13/16 6 1/4 11 1/2 3 1/16 13 1/2 3 1/2 5 7/8 250
9 3/4 7 7/8 18 3/4 2 15/16 15 1/4 3 1/2 6 1/8 315
12 3/8 9 7/8 22 3/4 3 1/2 17 1/2 3 7/8 6 1/2 400
15 9/16 12 3/8 24 1/4 3 1/2 20 1/16 3 7/8 6 1/2 21
Performance Data
RFD-D Series
Listed Nominal Inlet
Size Diameter (in.)
125
5
AEFF
(ft2)
Neck Velocity (fpm)
200
300
400
500
600
700
800
900
1000
Outlet Airflow (cfm)
27
41
54
68
82
95
109
122
136
Total Pressure (in.w.g.)
.011
.024
.043
.067
.097
.132
.172
.218
.269
Outlet NC
<15
<15
<15
20
24
29
33
38
42
Throw (ft.)
1-1-1
1-1-1
1-1-2
1-1-2
1-1-3
1-2-3
1-2-4
1-2-4
1-2-4
39
59
79
99
118
138
158
177
197
Total Pressure (in.w.g.)
.009
.021
.037
.058
.083
.113
.148
.187
.231
Outlet NC
<15
<15
<15
17
21
24
27
31
34
Throw (ft.)
1-1-1
1-1-1
1-1-2
1-1-2
1-1-3
1-2-3
1-2-4
1-2-4
2-2-5
70
105
140
175
210
245
280
315
350
Total Pressure (in.w.g.)
.014
.031
.054
.085
.123
.167
.218
.276
.340
Outlet NC
<15
16
19
21
24
27
30
32
35
Throw (ft.)
1-1-1
1-1-1
1-1-3
1-2-3
1-2-4
2-2-5
2-3-6
2-3-6
2-3-7
Outlet Airflow (cfm)
109
164
218
273
327
382
436
491
545
Total Pressure (in.w.g.)
.015
.033
.059
.092
.132
.180
.235
.297
.367
Outlet NC
<15
<15
18
22
26
30
35
39
43
Throw (ft.)
1-1-1
1-1-1
1-2-3
1-2-4
2-3-5
2-3-6
2-3-7
3-4-8
3-4-8
Outlet Airflow (cfm)
157
236
314
393
471
550
628
707
785
Total Pressure (in.w.g.)
.012
.028
.049
.077
.111
.151
.197
.249
.308
Outlet NC
<15
<15
<15
20
24
29
33
38
42
Throw (ft.)
1-1-1
1-1-1
2-2-5
2-3-6
2-4-7
Outlet Airflow (cfm)
280
420
560
700
840
980
1120
1260
1400
Total Pressure (in.w.g.)
.019
.042
.075
.118
.170
.231
.301
.381
.471
Outlet NC
<15
<15
21
28
35
42
49
56
63
Throw (ft.)
1-1-1
1-1-1
2-3-6
2-4-7
.037
Outlet Airflow (cfm)
160
6
.065
Outlet Airflow (cfm)
200
250
315
400
8
10 12 16 .099
.161
.285
.382
Performance Notes:
1. NC shown includes 10 dB Room Attenuation.
2. Throw values shown are to terminal velocities of 150,
100 and 50 fpm.
3. Performance data shown are based on type K entry.
For type H (side entry) plenum multiply total pressure by
1.25 and add 3 to NC value shown above.
22
3-4-8 3-5-10 4-5-11 4-6-12
3-4-8 3-5-10 4-6-11 4-6-13 5-7-14
Thermal Decay Constant (KT)
The Thermal Decay Constant (KT) shown on page 6 can be
used to predict the temperature differential between supply
and ambient air at various distances from the diffuser. See
page 6 for further information and instructions regarding
the application of this factor.
Specifications · Ordering Information
RFD-...-D Series
Suggested Specifications
Model RFD-Q-D
Furnish and install TROX model RFD-Q-D diffusers in sizes
and quantities shown on plans and schedules. Diffuser
assembly shall include a high induction diffuser core comprised of radially aligned deflection blades. Diffuser shall be
capable of achieving an induction ratio of at least 8 parts
room air to 1 part primary air within a radius of six (6) feet
from the diffuser outlet. Diffuser discharge shall be a
bellmouth configuration designed to maximize room air
induction. Diffuser face shall be square and capable of
allowing integration into a drywall ceiling system.
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
Model RFD-R-D
Furnish and install TROX model RFD-R-D diffusers in sizes
and quantities shown on schedules and plan. Diffuser
assembly shall include a high induction diffuser core comprised of radially aligned deflection blades. Diffuser shall be
capable of achieving an induction ratio of at least 8 parts
room air to 1 part primary air within a radius of six (6) feet
from the diffuser outlet. Diffuser discharge shall be a
bellmouth configuration designed to maximize room air
induction.Diffuser face shall be round for integration into a
drywall ceiling or mounting on an exposed duct drop.
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
Diffuser shall be furnished with a factory fabricated
top entry suitable for connection to rigid or flexible round
ductwork.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel. Note: Plenum must be installed before
ceiling when mounted in drywall!
Diffuser shall be furnished with a factory fabricated
top entry suitable for connection to rigid or flexible round
ductwork.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel. Note: Plenum must be installed before
ceiling when mounted in drywall!
Ordering Code
RFD - R - D - H
RFD-R-D = Round Face
(Surface or Exposed Duct Mounting)
RFD-EP-D = Extended Panel
(Lay -in Mounting in 24 x 24 Tile)
Inlet Type
K = No Plenum (Standard)
H = Side Entry Plenum (Optional)
T
EE
EE
EE
EE
EZE
EE
EE
EE
EUE
Model Number
RFD-Q-D = Square Face
(Surface Mounting)
/
250
TE
EE
EE
EE
EE
EZE
EE
EE
EE
EE
EU
Nominal Size *
125 ( 5 Nominal
160 ( 6 Nominal
200 ( 8 Nominal
250 (10 Nominal
315 (12 Nominal
400 (16 Nominal
Inlet
Inlet
Inlet
Inlet
Inlet
Inlet
Dia.)
Dia.)
Dia.)
Dia.)
Dia.)
Dia.)
* When furnished with Type K inlet
(standard)
IE
EE
OE
EE
P
23
Product Information · Application
Product Information Guide
Dimensional Information
Performance Data
Specification Text
Ordering Information
Features
25
26
27
27
• Designed for lay-in ceiling applications.
• DCS-P models feature a perforated face with a concealed
swirl technology core.
• DCS-C models feature a recessed perforated core plate and
a high efficiency discharge nozzle.
• DCS-P-K and DCS-C-K models allow direct connection to
flexible duct.
• Available with (optional) side entry plenum (Type H).
Construction
• Material: Galvanized Steel
• Finish: Perforated face, white powder coat paint.
All other parts, flat black paint.
DCS Series
DCS-P
DCS-C
Product Applicability
More Applicable
0
1
2
3
4
5
6
7
8
9
10
Low Temperature Air Distribution:
High Air Change Rates:
Minimal Velocity Disturbance:
High Sensible Loads:
High Ceiling Applications:
Model Availability
24
Mounting:
Square Face
Round Face
Top Entry Plenum
Side Entry Plenum
Direct Duct
Connection
Surface:
Not Available
Not Available
Not Available
Not Available
Not Available
Lay-in:
DCS- .. -.....
Not Available
Not Available
DCS- ... -H
DCS- ... -K
Exposed Duct:
Not Available
Not Available
Not Available
Not Available
Not Available
Dimensional Information
DCS Series
Model DCS-P
23.75
Model DCS-C
23.75
Plenum / Entry Options
K
Aø
H1
Dø
H
H3
H2
Type K (Standard)
Size
Dø
Aø
125
4 7/8 3 7/8 160
6 1/4 200
7 13/16 250
Type H Plenum
K
H
H1
H2
H3
8
3
9 1/8 3
4 1/8 4 7/8 9 3/8 3
10 1/4 3
4 1/4 6 1/4 10 7/8 3
11 5/8 3
4 1/4 9 3/4 7 7/8 12 7/8 3
13 3
4 1/8 315
12 3/8 9 7/8 15 1/2 3 1/2 15 1/2 3 1/2 4 5/8 400
15 9/16 12 3/8 18 3/4 3 1/2 17 3/4 3 1/2 5 3/8 25
Performance Data
DCS-P and DCS-C Series
Listed Nominal Inlet
Size Diameter (in.)
125
5
AEFF
(ft2)
Neck Velocity (fpm)
200
300
400
500
600
700
800
900
1000
Outlet Airflow (cfm)
27
41
54
68
82
95
109
122
136
Total Pressure (in.w.g.)
.011
.024
.043
.067
.097
.132
.172
.218
.269
Outlet NC
<15
<15
<15
20
24
29
33
38
42
Throw (ft.)
1-1-1
1-1-1
1-1-2
1-1-2
1-1-3
1-2-3
1-2-4
1-2-4
1-2-4
39
59
79
99
118
138
158
177
197
Total Pressure (in.w.g.)
.009
.021
.037
.058
.083
.113
.148
.187
.231
Outlet NC
<15
<15
<15
17
21
24
27
31
34
Throw (ft.)
1-1-1
1-1-1
1-1-2
1-1-2
1-1-3
1-2-3
1-2-4
1-2-4
2-2-5
70
105
140
175
210
245
280
315
350
Total Pressure (in.w.g.)
.014
.031
.054
.085
.123
.167
.218
.276
.340
Outlet NC
<15
16
19
21
24
27
30
32
35
Throw (ft.)
1-1-1
1-1-1
1-1-3
1-2-3
1-2-4
2-2-5
2-3-6
2-3-6
2-3-7
Outlet Airflow (cfm)
109
164
218
273
327
382
436
491
545
Total Pressure (in.w.g.)
.015
.033
.059
.092
.132
.180
.235
.297
.367
Outlet NC
<15
<15
18
22
26
30
35
39
43
Throw (ft.)
1-1-1
1-1-1
1-2-3
1-2-4
2-3-5
2-3-6
2-3-7
3-4-8
3-4-8
Outlet Airflow (cfm)
157
236
314
393
471
550
628
707
785
Total Pressure (in.w.g.)
.012
.028
.049
.077
.111
.151
.197
.249
.308
Outlet NC
<15
<15
<15
20
24
29
33
38
42
Throw (ft.)
1-1-1
1-1-1
2-2-5
2-3-6
2-4-7
Outlet Airflow (cfm)
280
420
560
700
840
980
1120
1260
1400
Total Pressure (in.w.g.)
.019
.042
.075
.118
.170
.231
.301
.381
.471
Outlet NC
<15
<15
21
28
35
42
49
56
63
Throw (ft.)
1-1-1
1-1-1
2-3-6
2-4-7
.037
Outlet Airflow (cfm)
160
6
.065
Outlet Airflow (cfm)
200
250
315
400
8
10 12 16 .099
.161
.285
.382
Performance Notes:
1. NC shown includes 10 dB Room Attenuation.
2. Throw values shown are to terminal velocities of 150,
100 and 50 fpm.
26
3-4-8 3-5-10 4-5-11 4-6-12
3-4-8 3-5-10 4-6-11 4-6-13 5-7-14
Thermal Decay Constant (KT)
The Thermal Decay Constant (KT) shown on page 6 can be
used to predict the temperature differential between supply
and ambient air at various distances from the diffuser. See
page 6 for further information and instructions regarding
the application of this factor.
Specifications · Ordering Information
Suggested Specifications
DCS - P Series
Furnish and install TROX model DCS-P perforated face
swirl diffusers in sizes and quantities shown on plans and
schedules. Diffuser assembly shall include a high induction
diffuser core comprised of radially aligned deflection
blades. Diffuser shall be capable of achieving an induction
ratio of at least 8 parts room air to 1 part primary air within
a radius of six (6) feet from the diffuser outlet. Perforated
diffuser face shall be square and fabricated from 51
percent free area perforated plate. Diffuser assembly shall
be compatible for lay-in installation in a standard (1 inch
inverted T-bar) ceiling suspension system.
DCS - C Series
Furnish and install TROX model DCS-C swirl diffusers in
sizes and quantities shown on plans and schedules.
Diffuser assembly shall include a high induction diffuser
core comprised of radially aligned deflection blades and a
high efficiency bell mouth discharge nozzle. Diffuser shall
be capable of achieving an induction ratio of at least
8 parts room air to 1 part primary air within a radius of
six (6) feet from the diffuser outlet. Perforated diffuser face
shall be fabricated from 51 percent free area perforated
plate. Diffuser assembly shall be compatible for lay-in
installation in a standard (1 inch inverted T-bar) ceiling
suspension system.
The diffuser shall be constructed of steel and its face
finished in powder coated paint (RAL 9010, white) or (color
specified by architect). All internal surfaces are to be
painted RAL 9005 (flat black).
(Type H Horizontal Plenum, Optional) Diffuser shall be
furnished with a factory fabricated side entry plenum
assembly consisting of a round inlet collar and an airflow
equalizing grid. This plenum assembly shall be constructed
of galvanized steel.
The diffuser shall be constructed of steel and its face
finished in powder coated paint (RAL 9010, white) or (color
specified by architect). All internal surfaces are to be
painted RAL 9005 (flat black).
(Type H Horizontal Plenum, Optional) Diffuser shall be
furnished with a factory fabricated side entry plenum
assembly consisting of a round inlet collar and an airflow
equalizing grid. This plenum assembly shall be constructed
of galvanized steel.
Ordering Code
DCS - P - K
Model Number
DCS - P
DCS - C
250
TE
EE
EE
EE
EE
ZE
EE
EE
EE
EE
U
IE
EEO
EE
EP
Inlet Type
K = No Plenum (Standard)
H = Horizontal Entry Plenum (Optional)
/
Nominal Size *
125 ( 5 Nominal
160 ( 6 Nominal
200 ( 8 Nominal
250 (10 Nominal
315 (12 Nominal
400 (16 Nominal
Inlet
Inlet
Inlet
Inlet
Inlet
Inlet
Dia.)
Dia.)
Dia.)
Dia.)
Dia.)
Dia.)
* With type K (standard) inlet
IE
EE
OE
EE
P
27
Product Information · Application
Product Information Guide
Dimensional Information
Performance Data
Specification Text
Ordering Information
Features
29
32
33
33
• Designed for exposed duct applications.
• VDL models incorporate swirl performance on cooling while
providing maximum vertical throw during heating.
• Optional electric operators allow remote reset or automatic
control of diffuser discharge pattern, allowing horizontal discharge during cooling operation and vertical spot projection
of heated air.
• Available with top or side entry plenum boxes.
Construction
• Material: Galvanized Steel
• Finish: White Powder Coat Paint
VDL Series
For High Ceiling Heating and Cooling Applications
VDL in Cooling Mode
VDL in Heating Mode
Product Applicability
More Applicable
0
1
2
3
4
5
6
7
8
9
10
Low Temperature Air Distribution:
High Air Change Rates:
Minimal Velocity Disturbance:
Heating and Cooling Applications:
High Ceiling Applications:
Model Availability
Mounting / Options:
Surface Mount:
Lay-in:
Exposed Duct:
(Manual Adjustment)
Exposed Duct:
(Electric Operator)
VDL Series
No Plenum
VDL Series
Top Entry Plenum
VDL Series
Side Entry Plenum
Not Recommended
Not Recommended
Not Recommended
Not Available
Not Available
Not Available
VDL
Not Available
Not Available
VDL - E2 or
VDL - E3
VDL-V- E2 or
VDL-V-E3
Not Available
Motorized options incorporate 24VAC electric motors. E2 and E3 options provide two position and proportional control of discharge pattern (respectively).
28
Dimensional Information
VDL Series
Dimensions
Bø
Dø
K
2 5 /8 Dø
H3
H1
H4
Bø
T
T
Rø
Rø
Model VDL - H...
Model VDL - V...
Bø
C
R2
H2
T
Rø
Model VDL...
Duct Mating Flange for VDL
Size
Dø
Rø
Bø
H1
H2
H3
H4
T
R2
C
315
9 3/4 18 1/4 12 1/2 16 3/4 8
19 13 1/2 2 1/2 15 14 1/2 400
12 3/8 22 5/16 15 7/8 21 9 3/8 23 3/4 16 9/16 3 1/8 18 1/4 17 3/4 630
15 3/4 34 1/4 25 29 1/2 15 1/16 33 3/8 24 1/4 4 15/16 27 7/8 27 3/16 800
19 3/4 42 3/8 31 5/8 39 5/16 22 3/8 44 5/8 33 1/2 6 5/16 34 5/16 33 9/16 Suggested Mounting
Model VDL
Model VDL - V
Model VDL - H
29
Product Information · Application
Product Information Guide
Dimensional Information
Performance Data
Specification Text
Ordering Information
Features
31
32
33
33
• Designed for surface mount and exposed duct applications
involving high ceilings.
• VDZ models incorporate swirl performance on cooling while
providing maximum vertical throw during heating.
• Optional electric operators allow remote reset or automatic
control of diffuser discharge pattern, allowing horizontal discharge during cooling operation and vertical spot projection
of heated air.
• Unlike VDL, facial appearance is same for all discharge
positions.
• Available with top or side entry plenum boxes.
Construction
• Material: Galvanized Steel
• Finish: White Powder Coat Paint
VDZ Series
For High Ceiling Heating and Cooling Applications
Product Applicability
More Applicable
0
1
2
3
4
5
6
7
8
9
10
Low Temperature Air Distribution:
High Air Change Rates:
Minimal Velocity Disturbance:
Heating and Cooling Applications:
High Ceiling Applications:
Model Availability
Mounting / Options:
VDZ Series
No Plenum
VDZ- V Series
Top Entry Plenum
VDZ- H Series
Side Entry Plenum
Surface Mount:
(Manual Adjustment)
VDZ-B-NV
VDZ-B-V
VDZ-B-H
VDZ-B-NV- E2 or
VDZ-B-NV-E3
VDZ-B-V- E2 or
VDZ-B-V-E3
VDZ-B-H- E2 or
VDZ-B-H-E3
VDZ-A-NV
VDZ-A-V
VDZ-A-H
VDZ-A-NV- E2 or
VDZ-A-NV-E3
VDZ-A-V- E2 or
VDZ-A-V-E3
VDZ-A-H- E2 or
VDZ-A-H-E3
Surface Mount:
(Electric Operator)
Exposed Duct:
(Manual Adjustment)
Exposed Duct:
(Electric Operator)
Motorized options incorporate 24VAC electric motors. E2 and E3 options provide two position and proportional control of discharge pattern (respectively).
30
Dimensional Information
VDZ Series
Dimensions
K
øD3
C2
øD1
H2
H4
H3
øD2
Model VDZ...NV
øD2
Model VDZ...H
øD1
C1
A
H1
øD2
Exposed Mounting Detail
øD2
Model VDZ...V
A
øD2
Surface Mounting Detail
Size
øD1
øD2
øD3
H1
H2
H3
H4
C1
C2
A
315
9 3/4 18 1/4 12 3/8 18 1/2 11 20 3/4 9 7/16 2 1/4 2 1/4 1 5/8 400
12 3/8 22 5/16 15 3/4 22 7/8 14 3/8 25 1/2 11 2 1/4 3 1/2 1 3/4 630
15 3/4 34 5/16 24 3/4 31 1/2 18
5/16 32 13 7/16 3 1/2 3 1/2 2
800
19 3/4 42 7/16 31 7/16 36 7/8 22 1/4 38 1/4 15 3/4 3 1/2 3 1/2 2 3/16 Suggested Mounting
Model VDZ...NV
Model VDZ...V
Model VDZ...H
31
Performance Data
Models VDL and VDZ
Listed
Size
315
Nominal Inlet
10 AEFF
(ft2)
.293
Neck Velocity (fpm)
800
1000
1200
1400
1600
1800
2000
2200
2400
Outlet Airflow (cfm)
234
293
351
410
468
527
585
644
702
Total Pressure (in.w.g.)
.057
.090
.129
.176
.230
.291
.359
.434
.517
17
21
25
29
32
36
40
44
48
1-1-2
1-1-2
1-1-3
1-1-3
1-2-3
1-2-4
1-2-4
2-3-5
2-3-5
5
6
8
9
11
13
14
16
18
Outlet Airflow (cfm)
439
549
659
768
878
988
1098
1207
1317
Total Pressure (in.w.g.)
.038
.060
.086
.117
.153
.194
.239
.289
.344
Outlet NC
<15
<15
17
20
24
27
31
34
38
1-2-4
2-2-5
2-3-6
2-3-7
2-4-7
3-4-8
7
9
12
14
17
20
23
26
29
Outlet Airflow (cfm)
844
1054
1265
1476
1687
1898
2109
2320
2531
Total Pressure (in.w.g.)
.044
.068
.098
.134
.175
.221
.273
.331
.394
Outlet NC
<15
17
21
24
28
32
36
40
43
2-3-5
2-3-6
3-4-8
9
12
15
18
21
24
28
31
34
Outlet Airflow (cfm)
973
1216
1459
1702
1945
2189
2432
2675
2918
Total Pressure (in.w.g.)
.043
.067
.097
.132
.173
.218
.270
.326
.388
Outlet NC
<15
18
22
26
30
34
38
42
47
2-3-5
2-3-7
8
10
Outlet NC
Horizontal Throw (ft.)
Max. Vertical Throw (ft.)
400
12 .549
Horizontal Throw (ft.)
Max. Vertical Throw (ft.)
630
16 1.05
Horizontal Throw (ft.)
Max. Vertical Throw (ft.)
800
16 1.05
Horizontal Throw (ft.)
Max. Vertical Throw (ft.)
Performance Notes:
1. NC values shown are for basic VDL
models (no plenum) and assume 10 dB
room absorption. For other models apply
correction factors from the table at right.
2. Horizontal throw values represent cooling
or isothermal operation and are shown
to terminal velocities of 150, 100 and
50 fpm.
3. Maximum Vertical Throw values represent
the maximum vertical projection of the air
jet for heating applications where the
supply air temperature is 20 degrees
above the ambient space temperature.
For (heating) temperature differentials of
10 or 30 degrees, multiply the value
shown above by 1.5 or 0.8, respectively.
32
Model
VDL....
VDL..V
VDL..H
VDZ..NV
VDZ..V
VDZ..H
3-5-9 3-5-10 4-6-11
3-4-9 3-5-10 4-6-11 4-6-13 5-7-14 5-8-15
3-4-5 3-5-10 4-5-11 4-6-12 5-7-14 5-8-15 5-8-16
13
16
19
23
26
29
33
Parameter
Size 315
Size 400
Size 630
Size 800
NC
N/A
N/A
N/A
N/A
∆P
N/A
N/A
N/A
N/A
Add 1
Add 12
Add 12
Add 4
NC
∆P
NC
∆P
NC
∆P
NC
∆P
Multiply by 1.2 Multiply by 1.8 Multiply by 1.8 Multiply by 1.2
Add 4
Add 14
Add 14
Add 5
Multiply by 1.4 Multiply by 2.0 Multiply by 2.2 Multiply by 1.7
Subtract 7
Add 10
Add 2
Subtract 5
Multiply by 0.8 Multiply by 1.7 Multiply by 0.9 Multiply by 0.8
Add 4
Add 15
Add 12
Add 1
Multiply by 1.4 Multiply by 2.8 Multiply by 2.0 Multiply by 1.7
NC
No Correction
∆P
Multiply by 1.4 Multiply by 3.2 Multiply by 2.4 Multiply by 1.7
Add 15
Add 12
Add 3
Specifications · Ordering Information
VDL and VDZ Series
Suggested Specifications
VDL Series
Furnish and install TROX model VDL swirl diffusers in sizes
and quantities shown on plans and schedules. Diffuser
assembly shall include a high induction diffuser face comprised of radially aligned deflection blades. Diffuser shall be
capable of achieving an induction ratio of at least 8 parts
room air to 1 part primary air within a radius of six (6) feet
from the diffuser outlet. Diffuser shall incorporate a
(manual, automatic) adjustment to facilitate a vertical jet
discharge when in its heating mode and a horizontal swirl
discharge during cooling operation.
Diffuser shall be furnished with a factory fabricated plenum
with top entry suitable for connection to exposed rigid or
flexible round ductwork.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel.
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
VDZ Series
Furnish and install TROX model VDZ swirl diffusers in sizes
and quantities shown on plans and schedules. Diffuser
assembly shall include a high induction diffuser face comprised of radially aligned deflection blades. Diffuser shall be
capable of achieving an induction ratio of at least 8 parts
room air to 1 part primary air within a radius of six (6) feet
from the diffuser outlet. Diffuser shall incorporate a
(manual, automatic) adjustment to facilitate a vertical jet
discharge when in its heating mode and a horizontal swirl
discharge during cooling operation.
The diffuser shall be constructed of steel and powder coat
finish in (RAL 9010, white) or (color specified by architect).
Diffuser shall be furnished with a factory fabricated
plenum with top entry suitable for connection to rigid or
flexible round ductwork in exposed duct or surface mount
applications.
Optional Type H Side Entry Plenum
Diffuser shall be furnished with a factory fabricated side
entry plenum assembly consisting of a round inlet collar
with an integral balancing damper and an airflow equalizing
grid. This plenum assembly shall be constructed of
galvanized steel. Note: Plenum must be installed before
ceiling when mounted in drywall!
Ordering Code
VDZ - B - H
ET
EE
EE
EZ
EE
UE
Plenum/Inlet Type
V = Top Entry Plenum (Standard)
H = Side Entry Plenum (Optional)
IE
EEO
EE
EP
T
EE
EE
EZE
EE
EE
UE
Flange Type (VDZ Models Only)
A = None
(Exposed Duct Applications)
B = Flush Mounting Angle
(Surface Mount Applications)
630 - E2
I
EE
OEE
EE
PEE
Model Number
VDL = Adjustable Pattern
(Varying Facial Appearance)
VDZ = Adjustable Pattern
(Constant Facial Appearance)
/
TE
EE
EE
EZE
EE
EE
U
Operator/Positioner
M = Manual (No Actuator)
E2 = Electric (24VAC, 2 Position)
E3 = Electric (24VAC, Proportional)
Nominal Size
315 (10 Nominal Inlet Dia.)
400 (12 Nominal Inlet Dia.)
630 (16 Nominal Inlet Dia.)
800 (20 Nominal Inlet Dia.)
33
Applications
Swirl Diffusers in High Air Change Applications
The unique operational characteristics of swirl diffusers makes
them the ideal choice for high load and air change rate applications. Figure 1 illustrates a collision between two air streams
from conventional ceiling diffusers. The velocity measured at
height (H) is dependent upon the distance (X) between the diffusers and increases as that distance between is reduced. This
relationship is depicted in Figure 2. Although their projection is
significantly less, swirl diffusers operate in a similar manner
when located far enough apart that their radial swirl fields do not
intersect. The performance data in previous sections of this
leaflet is based on such spacing.
However, when the diffusers are located such that their swirl
fields intersect (see figure 3), a secondary swirl field is formed
which increases the induction of room air. As such, room
velocities can actually be reduced by locating the diffusers in
very close proximity to one another. This should be limited to
a single direction and 8 to 10 feet spacing maintained in the
perpendicular direction (see figure 4 below).
Swirl diffusers can be employed to deliver air change rates
in excess of 80 per hour, while maintaining minimal velocity
disturbances in the occupied or process areas of the space.
Performance data presented on pages 36 and 37 (and the
examples on page 35) aid designers in selecting swirl diffusers
for high air change applications. TROX also provides designers
with selection and location software supporting high air change
applications. Contact your local TROX representative for further
details.
Conventional
Diffuser
X/2
H1
Midpoint
Velocity
Velocity at Midpoint
X
Diameter of
Swirl Field
Swirl
Diffuser
Distance (X) Between Diffusers
Figure 1: Multiple Diffusers in a Space
Figure 2: Diffuser Characteristics
Secondary
Swirl
8-10 ft.
3-6 ft.
Swirl Field
Figure 3: Intersection of Swirl Fields
34
Figure 4: High Density Mounting For High Air Change Rates
Diffuser Selection · Examples
High Air Change Selection Procedure
Swirl diffusers for high air change applications may be
identified and selected according to the following procedures:
1. Identify the air change rate and maximum allowable
velocity for the application under consideration.
2. Identify the types and sizes of swirl diffusers that are
capable of the specified performance using the table on
page 36.
3. After identifying diffuser type and size, consult the table
on page 37 to determine the maximum outlet airflow
rate that corresponds to the desired performance.
4. Calculate the required number of diffusers for the application, rounding up to the next number that results in an
equal diffuser distribution in each row For example, if
three rows (but onlyseven outlets) are required, increase
the number of outlets to maintain equal distribution. If a
single row (of seven outlets) is involved, the calculated
number of outlets is sufficient. Each outlet handles the
same CFM.
5. Locate diffusers in an array such that the distance from
any wall to the center of the nearest diffuser is at least
3 feet. Diffuser spacing may be anywhere from 3 to
6 feet in one direction, while the perpendicular spacing
is limited to at least eight (8) feet. Note that maximum air
change capacities on page 36 are based on a 3 ft by 8 ft
spacing and may be reduced as spacing is increased.
8 ft.
3 ft
(min)
Diffuser Layout for High Air Change Applications
8 ft.
High Air Change Selection Example 1:
TDF (size 605) swirl diffusers are to be used in a laboratory
with nine (9) foot ceilings. The space (16 ft x 15 ft) requires
40 ACH-1 (1440 CFM) and velocities at the top of the hood
sash (6 foot level) cannot exceed 50 fpm.
A quick check verifies that the maximum air change rate
(page 36) for a TDF/605 installed 3 feet above the level
where velocities are limited to 50 fpm is 58.
Airflow data for the TDF/605 (see page 37) indicates that
the maximum outlet airflow that may be employed while
limiting velocities (3 feet below the diffuser) to 50 fpm is
240 CFM. Therefore, 6 diffusers must be used, handling
240 CFM each and located as shown.
High Air Change Selection Example 2:
VDW (size 605 x 48) swirl diffusers are to be used in a
clean room with a nine (9) foot ceiling. The space
(15 ft x 14 ft) requires 70 ACH-1 (2205 CFM) and velocities
at the 6 foot level cannot exceed 60 fpm.
A check verifies that the maximum air change rate (page
36) for the selected diffuser installed 3 feet above the level
where velocities are limited to 60 fpm is 74.
Airflow data (page 37) for the VDW (size 605 x 48)
indicates that the maximum outlet airflow that may be
delivered while limiting velocities (3 feet below the diffuser)
to 60 fpm is 305 CFM, so 8 diffusers must be used,
handling 275 CFM each and located as shown.
3 ft
(min)
3 ft.
3 ft.
3.5 ft
5 ft.
Layout for Example 1
8 ft.
3 ft
(min)
3 ft.
3 ft
(min)
Layout for Example 2
35
High Air Change Applications
Maximum Air Change Rate Capacities
Distance H1
(feet)
2
3
4
5
6
7
Maximum
Velocity
(fpm)
Diffuser Model/Size
RFD
250
RFD-D
250
RFD
315
RFD
400
RFD-D TDF/TDV VDW
315
400
500 x 24
RFD-D TDF/TDV VDW TDF/TDV VDW
400
500
605 x 24
605
605 x 48
50
18
25
25
30
33
33
37
38
40
45
48
52
60
20
29
29
35
38
38
44
44
46
53
55
60
70
25
33
33
40
44
46
50
50
53
60
63
68
80
27
37
37
45
49
49
56
56
59
67
70
76
100
33
44
45
55
59
59
68
68
71
50
22
30
32
38
40
40
46
47
48
More than 80
56
58
64
60
27
35
36
44
47
47
55
55
57
64
68
74
70
30
40
41
50
53
53
62
62
64
74
78
>80
69
69
80
34
45
47
56
61
61
100
40
55
57
67
73
73
72
50
26
35
36
43
46
46
53
53
56
63
74
60
29
40
43
49
53
53
62
62
64
70
34
46
48
57
62
61
71
71
74
69
69
80
38
51
53
63
100
46
62
64
76
50
28
38
40
47
51
51
59
59
60
60
33
45
46
54
54
59
68
68
70
77
77
70
38
51
53
61
67
66
42
57
59
68
75
74
100
50
68
70
41
42
49
54
54
62
63
65
47
49
57
63
63
73
73
75
67
66
77
70
38
51
53
61
80
45
61
62
74
100
54
73
75
50
31
43
44
52
56
77
56
66
66
76
76
37
50
51
60
66
65
42
56
59
69
76
75
77
65
79
74
77
>80
More than 80
More than 80
More than 80
70
79
72
More than 80
More than 80
60
63
69
More than 80
29
76
>80
MMore than 80
35
47
77
More than 80
More than 80
50
56
73
More than 80
60
80
67
More than 80
80
100
More than 80
More than 80
68
79
77
More than 80
More than 80
More than 80
More than 80
More than 80
Notes Regarding Table:
1. Values listed above represent maximum achievable air change rates for diffusers spaced on three (3) foot centers in
one direction and eight (8) foot centers in a perpendicular direction. The tabulation also assumes a minimum of three (3)
feet from any vertical wall or boundary to the closest outlet.
2. For air change rates exceeding 80, contact the factory for application guidance.
36
High Air Change Applications
Maximum Diffuser Airflow Rates
Distance H1
(feet)
2
3
4
5
6
7
Maximum
Velocity
(fpm)
Diffuser Model/Size
RFD
250
RFD
315
RFD
400
RFD-D
250
RFD-D
315
RFD-D TDF/TDV TDF/TDV TDF/TDV VDW
VDW
VDW
400
400
500
605
500 x 24 605 x 24 605 x 48
50
65
90
110
90
120
140
120
145
175
135
165
190
60
75
105
130
105
140
160
140
170
200
160
195
225
70
90
120
145
120
160
185
170
195
230
185
220
250
80
100
135
165
135
180
205
180
215
255
205
245
280
100
120
165
200
160
215
250
215
260
310
240
295
345
50
90
130
155
125
165
195
165
200
240
190
230
265
60
110
150
180
145
195
225
195
235
280
225
265
305
70
125
170
205
165
220
255
220
265
320
255
305
350
80
140
195
230
185
250
285
250
295
355
285
340
390
100
165
235
275
225
300
345
300
360
425
345
410
470
50
120
165
195
160
210
245
210
255
305
245
290
335
60
135
195
225
185
245
285
245
295
355
285
340
390
70
155
220
260
210
285
325
280
340
405
325
385
445
80
175
245
290
235
315
365
315
375
450
365
430
495
100
210
295
350
285
380
440
380
455
545
440
520
600
50
140
200
235
190
255
295
255
305
365
295
350
400
60
165
230
270
225
295
345
295
355
425
345
410
470
70
190
265
310
255
340
390
335
405
485
390
465
530
80
210
295
345
285
380
440
375
455
545
435
520
595
100
250
355
420
345
450
530
455
550
600
525
625
720
50
160
230
270
225
295
345
295
355
425
340
405
465
60
190
270
315
260
345
400
345
415
495
400
475
540
70
220
305
360
295
395
455
390
470
565
455
540
620
80
245
340
405
335
440
510
440
530
630
510
600
690
100
295
415
485
400
535
615
530
640
765
615
730
835
50
185
260
310
255
335
390
335
405
480
390
460
530
60
220
305
360
295
395
455
390
470
565
455
535
620
70
250
350
410
335
450
520
445
535
640
515
615
700
80
280
390
460
375
500
580
500
600
720
575
685
790
100
335
470
555
455
605
700
600
725
870
700
825
950
Notes Regarding Table:
1. Airflow rates shown represent the maximum allowable diffuser delivery that limits local velocities to (or below) the
prescribed velocity at the appropriate distance (H1) below the diffuser discharge.
2. These maximum air flow rates are based upon a minimum three (3) foot diffuser spacing in one direction and an eight (8)
foot spacing in the perpendicular direction.
37
Product Information
High Efficiency Filter Terminals
Features
• Swirl diffuser performance suitable for use in clean rooms
up to Class 1000.
• Integral filters offer particulate filtration efficiencies as
high as 99.998 %.
• Welded airtight plenum box includes a pressure test port
and an oil mist injection port.
• All terminals allow filter service through diffuser face.
Construction
High efficiency filter
Diffuser face (VDW shown)
Gel seal
Face removal screw
F660 Series
• Material: Galvanized Steel
• Diffuser Finish: White powder coat paint.
Models Available
F660 Series Filter Terminals
F660 series terminals incorporate a top entry collar and
are intended for flush ceiling mounting. These terminals
incorporate any of the high efficiency filters shown below,
and are offered with either TDF or VDW swirl diffuser faces.
Sizes are available for terminal airflow rates as high as
625 CFM (based on a 1.0 in.w.g. clean filter pressure
requirement).
F640 Series Filter Terminals
F640 series terminals incorporate a side entry collar and
are intended for flush ceiling mounting. These terminals
incorporate any of the high efficiency filters shown below,
and are offered with either TDF or VDW swirl diffuser
faces. Sizes are available for terminal airflow rates as high
as 625 CFM (based on a 1.0 in.w.g. clean filter pressure
requirement).
F640 Series
F655, F656 and F657 Series Terminals
F655 and F656 series terminals also incorporate a side
entry collar but include an integral motorized shut-off
damper. This allows filter service without effect to the airflow supply to other terminals. In addition, it may be used
to shut-off selected terminals during unoccupied periods in
order to increase filter life and conserve fan energy.
F657 terminals incorporate a mechanical volume regulator
which compensates for filter loading and maintains a
constant volume airflow through the terminal. No external
power or control connections are required.
All terminals are offered with either TDF or VDW swirl
diffuser faces. Sizes are available for terminal airflow rates
as high as 625 CFM (based on a 1.0 in.w.g. clean filter
pressure requirement).
F655 Series
Filter Availability
Efficiency
Initial Pressure
Loss (in.w.g.)
Seal Type
F780Z
> 98 %
0.50
U Channel Gasket
F780Z13
F780Z46
F780Z49
F780Z02
F781U
> 99.997 %
1.0
Gel Seal
F781U13
F781U46
F781U49
F781U02
Filter Type
Filter Model for Filter Model for Filter Model for Filter Model for
Size B Terminal Size C Terminal Size D Terminal Size E Terminal
F780 filter changeout is recommended when pressure drop exceeds 1.2 in.w.g.
F781 filter changeout is recommended when pressure drop exceeds 2.5 in.w.g.
38
Dimensional Information
High Efficiency Filter Terminals
F660 Series
F640 Series
F655, F656 and
F657 Series
Terminal
Size
Maximum
CFM
Filter Size
(mm)
B
øD
H
J
K
B
360
457 x 457 x 78
18 7/8 5 7/8 19 20 1/16 20 3/8 7 7/8 22 1/16 23 1/8 23 1/2 C
500
535 x 535 x 78
22 D
575
575 x 575 x 78
23 9/16 7 7/8 23 11/16 24 3/8 24 1/2 610 x 610 x 78
24 15/16 7 7/8 25 1/16 26 1/8 26 5/8 F656 - T - 1 - C
/
E
650
Detail X
Ordering Code
F656 = Filter Terminal, Side Entry
(24VAC Shut Off Damper)
F657 = Filter Terminal, Side Entry
(Constant Volume Regulator)
F660 = Filter Terminal, Side Entry
(No Airflow Controller)
Diffuser Face
T = TDF - Q
V = VDW - Q
ET
EE
EE
EE
EE
EE
ZEE
EE
EE
EE
EE
EE
EE
UE
F655 = Filter Terminal, Side Entry
(Pneumatic Shut Off Damper)
I
EE
OEE
EE
EPE
Model Number
F640 = Filter Terminal, Top Entry
F781
TE
EE
EE
EZE
EE
EE
U
Filter Type
F780
F781
Unit Size
B
C
D
E
IE
EEO
EE
EP
39
Trox International: Companies and Agencies
In North America
Head Office & Research Centers
Trox USA
926 Curie Drive
Alpharetta, Georgia 30005-8369
Telephone: (770) 569-1433
Telefax: (770) 569-1435
e-mail: tb10@troxusa.com
Gebrüder Trox GmbH
Postfach 10 12 63
D-47504 Neukirchen-Vluyn
Telephone 49 28 45/2 02-0
Telefax 49 28 45/2 02-2 65
www.troxtechnik.com
E-mail: trox@troxtechnik.de
Australia
Trox (Australia) Pty Ltd.
Austria
Trox Austria GmbH
Belgium
S.A. Trox Belgium N.V.
Brazil
Trox do Brasil Ltda.
China
Trox Air Conditioning
Components (Suzhou) Co., Ltd.
Croatia
Trox Austria GmbH
Czech Republic
Trox Austria GmbH
Denmark
Trox Danmark A/S
Dubai
Trox (U.K.) Ltd.
France
Trox France Sarl
Germany
Hesco Deutschland GmbH
FSL FassadenSystemLüftung
GmbH & Co. KG
Great Britain
Trox (U.K.) Ltd.
Hong Kong
Trox Hong Kong Ltd.
Hungary
Trox Austria GmbH
Italy
Trox Italiana S.p.A.
Malaysia
Trox (Malaysia) Sdn. Bhd.
Poland
Trox Austria GmbH
South Africa
Trox (South Africa) (Pty) Ltd.
Spain
Trox Española, S.A.
Switzerland
Trox Hesco (Schweiz) AG
Yugoslavia
Trox Austria GmbH
Design changes reserved · All rights reserved © Gebrüder Trox GmbH (12/2002)
Overseas Agencies
Abu Dhabi
Argentina
Bosnia-Herz.
Bulgaria
Chile
Cyprus
Egypt
Finland
Greece
Iceland
India
Indonesia
Iran
Ireland
Israel
Jordan
Korea
Latvia
Lebanon
Lithuania
Netherlands
New Zealand
Norway
Oman
Pakistan
Philippines
Portugal
Romania
Russia
Saudi Arabia
Slovakia
Slovenia
Sweden
Taiwan
Thailand
Turkey
Ukraine
Uruguay
Vietnam
Zimbabwe