March 2006 Model SA Louvre Face Ceiling Diffuser

Air Diffusion
Square and Rectangular
Louvre Face Ceiling Diffuser
Model SA

Features

Low Profile Design

Ultra Slim 47mm Diffuser

Depth

14 Square/ Rectangular Air

Patterns

Removable Core

Extruded Aluminium Sections

Welded Construction

Supply or Return Air

Applications

Optional Opposed Blade

Damper

Purpose Designed Steel or

Phenolic Panel Plenum Boxes
Model SA Louvre
LouvreFace
FaceCeiling
Ceiling Diffuser
Diffuser

Contents

Page

Contents Page 2

Introduction Page 3

Product Specification Diffuser Page 4 5

Flange Styles Page 6

Air Patterns Page 7

Selection Guide Diffuser Page 8

Performance Data Diffuser Page 9 11

Installation Guide Page 12

Dimensions Diffuser Page 13 14

Ordering Information Diffuser Page 15

Product Specification Plenum Box Page 16

Selection Guide Plenum Box Page 17

Dimensions Plenum Box Page 18 19

Ordering Information Plenum Box Page 20

Photo Gallery Page 21

Product Range Page 22 23

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 Model SA Louvre Face Ceiling Diffuser

Introduction

The Model SA louvre face ceiling diffuser

incorporates a low profile design, which
results in an ultra slim diffuser depth of
just 47mm. A pleasing aesthetic
appearance blends with most ceilings
especially modular systems. The ultra slim
depth makes the diffuser ideal for
installations with a limited ceiling void
height.
All diffusers are manufactured from high
quality extruded aluminium sections
featuring a welded frame and core
construction.
A choice of 14 different square or
rectangular diffuser air patterns for either
1 way, 2 way, 2 way corner, 3 way or 4
way are available for supply air Standard 4 Way Air Pattern
applications and matching return air. An
angular style inner core assembly
provides a fixed horizontal air pattern,
capable of handling a sizeable quantity of
air at a given pressure drop and noise
level.
Inner cores are easily removable allowing
on site access or should internal room
layouts be altered; the core may be
substituted for an alternative air pattern
whilst the frame remains unchanged. To
maintain a 4 way appearance, internal
blanking baffles can be supplied to give
the desired air pattern. A retention cord is
fitted to each inner core.
The standard 32mm wide flange is
designed for surface mount or tee bar
installation; otherwise a variety of flange
4 Way Diffuser with Sheet Metal 4 Way Diffuser with Pre-Insulated
styles are available to suit Recessed,
Plenum Box having Side Entry Spigot Plenum Box having Side Entry Spigot
Tegular or clip in Spring Tee types of
ceiling grid systems.
Each diffuser can be fitted with an
optional opposed blade damper. The
damper is designed as an air trimming
device and is operated via a screw cam
through the diffuser neck with the core
To speed up on site installation time, the
removed.
plenum box / pan adaptor and diffuser
Purpose designed and correctly selected can be factory fitted together then
plenum boxes, in either sheet metal or delivered as a complete assembly to be
pre-insulated phenolic panel construction, simply installed as one unit.
are available to ensure the performance
As standard the Model SA diffuser is
and characteristics of the diffuser.
applied with a polyester powder white
For uniform air distribution it is finish to RAL9010 (20% gloss), or silver to
recommended that plenum boxes are RAL9006. Other special finishes are
supplied with an equalising grid. available on request.

3
Model SA Louvre
LouvreFace
FaceCeiling
Ceiling Diffuser
Diffuser

Diffuser Specification
Material Standard Model Types
Complete assembly from extruded
aluminium sections. 1 Way Air Pattern 4 Way Air Pattern

Construction SA 1G = Square 1 Way air pattern, SA 4G = Square or Rectangular 4 Way air

Outer frame and inner core sections diffuser only. pattern, diffuser only.
mitred and welded. Inner core located
into outer frame using spring and bar with SA 1LG = Rectangular 1 Way air pattern If an opposed blade damper is required
a retention cord fitted to each unit. with blades parallel to longest side, the code reference letter G is replaced by
diffuser only. R to denote that a damper is to be fitted
(i.e. SA 4R = 4 Way air pattern diffuser
Standard Installation Method
SA 1SG = Rectangular 1 Way air pattern with OBD fitted).
Standard is plain flange for surface mount
with blades parallel to the shortest side,
by screw fixing through neck or lay in tee
diffuser only.
bar installation (Type F0 fixing). Access for
installation is with the core removed. 2 Way Air Pattern

Installation Options SA 2G = Square 2 Way Opposite air

Countersunk screw holes in flange (Type pattern, diffuser only.
F1 fixing).
SA 2LG = Rectangular 2 Way Opposite
Clip in Spring Tee style fixing, confirmation air pattern with blades parallel to the
of the ceiling type and spring tee is longest side, diffuser only.
required (Type F8 fixing).
SA 2SG = Rectangular 2 Way Opposite
If a plenum box or pan adapter is air pattern with blades parallel to the
required, the diffuser can be supplied shortest side, diffuser only.
already fixed to the box as a prefabricated
SA 2CG = Square 2 Way Corner air
assembly. The box/diffuser assembly is
pattern with blades split equally across
then supported with on site fixings (by
the diagonal, diffuser only.
others).
SA 2CG (left) = Rectangular 2 Way
Accessories Corner air pattern with blades split
Opposed Blade Damper, (either with or unequally across diagonal with shortest
without plenum box) operated by screw side discharging left, diffuser only.
cam with the core removed.
SA 2CG (right) = Rectangular 2 Way
Matching Plenum Box or Pan Adapter, Corner air pattern with blades split
side or top entry circular, square or unequally across diagonal with shortest
rectangular spigots available with spigot side discharging right, diffuser only.
dampers if required.
3 Way Air Pattern
Rear quadrant Blanking Plates to maintain
SA 3G = Square 3 Way air pattern,
diffuser appearance. Plates manufactured
diffuser only.
from plated steel and painted black.
SA 3LG = Rectangular 3 Way air pattern
Finish with blades parallel to the longest side,
Standard is White Polyester Powder Coat diffuser only.
to RAL9010 (20% gloss) or Silver
Polyester Powder Coat to RAL9006. SA 3SG = Rectangular 3 Way air pattern
Alternative special finishes are also with the blades parallel to the shortest
available on request. side, diffuser only.

All Model SA air patterns are viewed

from the diffuser face.

4
 Model SA Louvre Face Ceiling Diffuser

Diffuser Specification
Square Size Range Rectangular Size Range

Standard 32mm : Flat Flange and 27mm : Bevel Standard 32mm : Flat Flange and 27mm : Bevel
Edge Flange Edge Flange

Size Range Square (Standard Sizes) Standard Sizes : Rectangular

Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size
150 x 150 147 x 147 223 x 223 298 x 298 225 x 150 222 x 147 298 x 223 373 x 298
225 x 225 222 x 222 298 x 298 373 x 373 300 x 150 297 x 147 373 x 223 448 x 298
300 x 300 297 x 297 373 x 373 448 x 448 375 x 150 372 x 147 448 x 223 523 x 298
375 x 375 372 x 372 448 x 448 523 x 523 450 x 150 447 x 147 523 x 223 598 x 298
447 x 447 444 x 444 520 x 520 595 x 595
450 x 450 447 x 447 523 x 523 598 x 598 300 x 225 297 x 222 373 x 298 448 x 373
375 x 225 372 x 222 448 x 298 523 x 373
450 x 225 447 x 222 523 x 298 598 x 373
Size Range : Square (NON standard Sizes)
Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size 375 x 300 372 x 297 448 x 373 523 x 448
200 x 200 197 x 197 273 x 273 348 x 348 450 x 300 447 x 297 523 x 373 598 x 448
250 x 250 247 x 247 323 x 323 398 x 398
350 x 350 347 x 347 423 x 423 498 x 498 450 x 375 447 x 372 523 x 448 598 x 523
400 x 400 397 x 397 473 x 473 548 x 548
525 x 525 522 x 522 598 x 598 673 x 673
600 x 600 597 x 597 673 x 673 748 x 748 NON Standard Size Range : Rectangular
Nom Neck Size Size Actual Neck Size Min Cut Out Size Overall Size
525 x 150 522 x 147 598 x 223 673 x 298
25TW/8 or 16 Tegular Flange 600 x 150 597 x 147 673 x 223 748 x 298

Size Range Square (Standard Size)

525 x 225 522 x 222 598 x 298 673 x 373
Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size
600 x 225 597 x 222 673 x 298 748 x 373
338 x 338 343 x 343 474 x 474 483 x 483
348 x 348 345 x 345 484 x 484 493 x 493
525 x 300 522 x 297 598 x 373 673 x 448
438 x 438 435 x 435 574 x 574 583 x 583
600 x 300 597 x 297 673 x 373 748 x 448
448 x 448 445 x 445 584 x 584 593 x 593

450 x 375 447 x 372 523 x 448 598 x 523

525 x 375 522 x 372 598 x 448 673 x 523
10W Recessed Flange
600 x 375 597 x 372 673 x 448 748 x 523
Size Range : Square (Standard Size)
Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size 525 x 450 522 x 447 598 x 523 673 x 598
421 x 421 418 x 418 478 x 478 495 x 495 600 x 450 597 x 447 673 x 523 748 x 598
521 x 521 518 x 518 578 x 578 595 x 595 750 x 450 747 x 447 823 x 523 898 x 598
1050 x 450 1047 x 447 1123 x 523 1198 x 598

525 x 600 522 x 597 598 x 673 673 x 748

Rectangular Diffusers 25TW/8 or 16 Tegular Flange and10W

Recessed Flanges are only available upon special request, please
refer to Air Diffusion Sales Office.

5
Model SA Louvre Face Ceiling Diffuser

Flange Styles
Standard Fixings - FO

Standard 32W Bevel Edge Diffuser Frame 27BW

(Also suitable for F1 or F8 fixing). (Also suitable for F1 or F8 fixing).

32 5 27

8mm Tegular / 25TW 8 16mm Tegular / 25TW 16

(Also suitable for "lay in" tile replacement). (Also suitable for "lay in" tile replacement).
8

16

5 25 5 25

10W Recessed Mini Flange

(Also suitable for F8 fixing).

10

6
 Model SA Louvre Face Ceiling Diffuser

Air Patterns

1 Way Discharge

SA1 SA1L SA1S

2 Way Discharge

SA2C SA2C (left) SA2C (right)

SA2 SA2L SA2S

3 Way Discharge

SA3 SA3S SA3L

4 Way Discharge

All Model SA air patterns are viewed

SA4 SA4
from the diffuser face.

7
Model SA Louvre Face Ceiling Diffuser

Selection Guide Diffuser

Performance Notes

Throw is based on a temperature differential of 10C cooling to a terminal velocity of

0.5m/.s to give average room velocity of 0.18m/s with a room height of 2.7m when
mounted flush with an unobstructed flat ceiling. Sound power and pressure levels are
based on supply with dampers open.

Maximum recommended air volume for 10 Cooling unobstructed ceiling application

Ceiling Height m 2.4 2.7 3.0 3.3 3.7 4.0 4.5 6.0
Volume 1 way l/s 80 125 200 250 300 370 450 950
Volume 2 way l/s 160 250 400 500 600 740 900 1900
Volume 3 way l/s 240 375 600 750 900 1110 1350 2850
Volume 4 way l/s 320 500 800 1000 1200 1480 1800 3800

Throw Details

When SA diffusers are used in installation where there is no ceiling effect, the throw
would be reduced by approximately 40%. This would also produce a deeper air stream
from the horizontal.

Selection of Blanking Plates

For diffusers supplied with 4 way face If required for supply or extract
appearance and required for 3, 2 or 1
way throw, rear quadrant blanking plates Square blanking plates for blanking down
can be fitted to give desired air pattern. a larger size of diffuser to operate at lower
For selection of diffuser the following volumes.
factors should be applied and selection
made from 4 way appearance data.

3 WAY Air volume required divided by 0.75

2 WAY Air volume required divided by 0.50

1 WAY Air volume required divided by 0.25

Blanking plates are manufactured from

steel and painted black. Plates can be
removed if required or added to at a later
date. Partial blanking plates are also
available on request.
Square Blank Plate SA4 Blanked 2 Way Active

Example Example
450 x 450 blanked to 300 x 300 Active 2 WAY AIR PATTERN 150 l/s THROW 5.0

150/0.50 = 300 ls

SELECT 450 x 450 BLANKED 2 WAY

THROW 4.9m NRLW 22 Pa 7.5

8
 Model SA Louvre Face Ceiling Diffuser

Model SA - Square Louvre Face Ceiling Diffuser

Performance Tables
Square Neck Velocity M/s: 1 1.25 1.5 1.75 2 2.5 3 3.5 4 4.5
Size mm Total Pressure Pa: 3.5 5.3 7.5 10 13 21 30 40 53 67
150 Volume l/s 23 28 34 39 45 56 68 79 90 101
Sound Power NRLW - 11 17 21 26 31 35 42 47 52
4 Way Throw 0.6 0.9 1.2 1.5 1.8 2.1 2.4 3.0 3.4 4.0
3 Way Throw 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.7 4.3
2 Way Throw 1.5 1.8 2.4 2.7 3.0 3.7 4.6 5.5 6.1 6.7
1 Way Throw 2.1 2.4 3.0 3.7 4.3 5.2 5.8 6.1 6.7 7.0
225 Volume l/s 50 63 76 89 100 127 177 187 202 228
Sound Power NRLW - 12 18 22 26 32 38 43 47 52
4 Way Throw 1.2 1.5 1.8 2.1 2.4 3.0 3.4 4.0 4.6 5.2
3 Way Throw 1.5 1.9 2.2 2.6 3.0 3.5 4.0 4.6 5.2 5.8
2 Way Throw 2.1 2.4 3.0 3.7 4.3 5.2 6.1 6.4 7.0 7.3
1 Way Throw 2.7 3.4 4.3 4.9 5.2 5.8 6.4 6.7 7.3 7.9
300 Volume l/s 90 112 135 158 180 225 270 315 360 405
Sound Power NRLW - 13 18 23 27 33 40 44 48 53
4 Way Throw 1.5 1.8 2.1 2.4 3.0 3.7 4.3 5.2 5.5 6.1
3 Way Throw 1.8 2.0 2.4 3.0 3.7 4.0 4.9 5.5 6.1 6.4
2 Way Throw 2.7 3.4 4.0 4.6 5.2 5.7 6.2 7.0 7.6 7.9
1 Way Throw 3.4 4.3 4.9 5.2 5.5 6.1 6.7 7.3 7.9 8.2
375 Volume l/s 140 176 211 246 281 351 422 492 562 633
Sound Power NRLW - 14 20 24 28 35 40 44 49 54
4 Way Throw 1.8 2.1 2.7 3.0 3.7 4.3 5.2 5.5 6.1 7.0
3 Way Throw 2.0 2.4 3.0 3.4 3.7 4.9 5.5 6.1 6.4 7.3
2 Way Throw 3.0 3.7 4.6 5.2 5.8 6.4 7.0 7.4 7.9 9.4
1 Way Throw 4.0 4.6 5.2 5.5 6.0 6.7 7.3 7.7 8.2 9.7
450 Volume l/s 202 253 303 354 405 506 607 709 810 911
Sound Power NRLW 10 16 22 28 33 38 42 46 51 57
4 Way Throw 2.1 2.4 3.0 3.7 4.0 4.9 5.5 6.1 7.0 7.4
3 Way Throw 2.4 2.7 3.4 4.0 4.3 5.5 6.1 6.4 7.6 7.9
2 Way Throw 3.7 4.3 4.9 5.5 6.0 6.7 7.3 7.9 9.4 9.7
1 Way Throw 4.3 4.9 5.2 5.8 6.3 7.0 7.6 8.2 9.7 10.0
525 Volume l/s 277 344 413 482 551 689 827 965 1100 1240
Sound Power NRLW 11 17 23 30 35 40 44 48 53 58
4 Way Throw 2.1 2.7 3.4 4.0 4.6 5.5 6.1 6.4 7.7 8.0
3 Way Throw 2.4 3.0 3.7 4.3 4.9 5.8 6.4 7.3 7.9 8.4
2 Way Throw 4.0 4.9 5.5 5.8 6.1 7.0 7.6 9.0 9.7 10.4
1 Way Throw 4.6 5.2 5.8 6.1 6.4 7.3 7.9 9.4 10.0 10.7
600 Volume l/s 360 450 540 630 720 900 1080 1260 1440 1620
Sound Power NRLW 12 18 25 31 37 42 45 50 55 59
4 Way Throw 2.4 3.0 3.7 4.3 4.9 5.8 6.1 7.4 7.7 8.4
3 Way Throw 2.7 3.4 4.0 4.6 5.2 6.0 6.4 7.6 8.4 8.7
2 Way Throw 4.3 5.2 5.5 6.0 6.4 7.0 7.9 9.4 10.0 10.7
1 Way Throw 4.6 5.2 5.8 6.3 6.7 7.3 8.2 9.7 10.4 11.0

9
Model SA Louvre Face Ceiling Diffuser

Model SA - Rectangular Louvre Face Ceiling Diffuser

Performance Tables
B B D D E F

A A C C G E E E F

B D E

Neck Neck Velocity M/s: 1 1.25 1.5 1.75 2 2.5 3 3.5 4 4.5
Size mm Total Pressure Pa: 3.5 5.3 7.5 10 13 21 30 40 53 67
300 x 150 Volume l/s 45 56 67 79 90 112 135 157 180 202
Sound Power NRLW - 12 18 22 26 32 38 43 47 52
Throw A 1.3 1.6 1.9 2.2 2.7 3.3 3.9 4.6 5.0 5.6
Throw B 0.6 0.9 1.2 1.5 1.8 2.1 2.4 3.0 3.4 4.0
Throw C 1.3 1.8 2.1 2.4 2.7 3.5 3.9 4.3 5.0 5.7
Throw D 1.2 1.5 1.8 2.1 2.4 3.0 3.3 3.9 4.5 5.1
Throw E 1.5 1.8 2.1 2.4 3.0 3.7 4.3 5.2 5.5 6.1
Throw F 2.3 2.7 3.2 3.6 4.0 4.7 5.5 6.7 7.9 8.9
Throw G 2.0 2.5 2.9 3.4 3.8 4.5 5.4 6.3 7.0 7.7
450 x 150 Volume l/s 67 84 101 118 135 168 202 236 270 303
Sound Power NRLW - 13 19 23 27 33 39 44 48 53
Throw A 1.6 1.9 2.3 2.6 3.2 4.0 4.7 5.2 5.8 6.6
Throw B 0.6 0.9 1.2 1.5 1.8 2.1 2.4 3.0 3.4 4.0
Throw C 1.7 2.0 2.6 2.8 3.4 4.0 4.7 5.3 5.8 6.6
Throw D 1.2 1.5 1.8 2.1 2.4 3.0 3.3 3.9 4.5 5.1
Throw E 1.7 2.0 2.6 2.9 3.6 4.2 5.1 5.4 6.0 6.9
Throw F 2.6 3.1 3.5 3.8 4.5 5.8 6.7 7.5 9.0 10.0
Throw G 2.2 2.7 3.2 3.7 4.2 5.2 6.2 7.0 7.8 8.3
600 x 150 Volume l/s 90 112 135 157 180 225 270 315 360 405
Sound Power NRLW - 13 19 23 27 34 40 45 49 54
Throw A 1.8 2.2 2.6 3.0 3.6 4.2 5.4 5.8 6.7 7.4
Throw B 0.6 0.9 1.2 1.5 1.8 2.1 2.4 3.0 3.4 4.0
Throw C 2.0 2.3 2.9 3.4 3.9 4.5 5.4 5.8 6.7 7.4
Throw D 1.2 1.5 1.8 2.1 2.4 3.0 3.3 3.9 4.5 5.1
Throw E 2.0 2.3 3.0 3.4 4.0 4.6 5.6 5.8 6.6 7.3
Throw F 2.8 3.3 3.9 4.5 5.2 6.2 7.6 8.6 10.0 11.0
Throw G 2.5 2.9 3.6 4.2 4.8 5.7 6.7 7.5 8.2 9.2
450 x 225 Volume l/s 101 126 152 177 202 253 304 354 405 459
Sound Power NRLW - 14 19 23 27 34 41 46 50 55
Throw A 1.8 2.2 2.8 3.1 3.8 4.4 5.3 5.9 6.6 7.4
Throw B 1.2 1.5 1.8 2.1 2.4 3.0 3.4 4.0 4.6 5.2
Throw C 2.0 2.3 2.9 3.4 3.9 4.6 5.4 5.8 6.8 7.5
Throw D 1.5 1.8 2.1 2.4 3.0 3.7 4.3 5.2 5.5 6.1
Throw E 2.1 2.4 3.0 3.7 4.0 4.9 5.5 6.1 7.0 7.4
Throw F 2.8 3.3 4.1 4.7 5.3 6.6 7.8 8.9 10.2 11.3
Throw G 2.3 2.8 3.3 3.9 4.2 5.1 6.1 6.9 7.8 8.4
600 x 225 Volume l/s 135 169 202 236 270 337 405 472 540 607
Sound Power NRLW - 14 20 24 28 35 40 44 49 54
Throw A 2.1 2.6 3.2 3.9 4.2 5.0 5.8 6.3 7.3 7.7
Throw B 1.2 1.5 1.8 2.1 2.4 3.0 3.4 4.0 4.6 5.2
Throw C 2.1 2.2 3.1 3.9 4.0 5.2 5.8 6.4 7.5 7.7
Throw D 1.5 1.8 2.1 2.4 3.0 3.7 4.3 5.2 5.5 6.1
Throw E 2.1 2.7 3.4 4.0 4.6 5.5 6.1 6.4 7.7 8.0
Throw F 3.0 3.8 4.3 5.1 5.9 6.8 8.3 9.8 10.8 12.0
Throw G 2.5 2.9 3.6 4.2 4.8 5.7 6.7 7.5 8.2 9.2

10
 Model SA Louvre Face Ceiling Diffuser

Neck Neck Velocity M/s: 1 1.25 1.5 1.75 2 2.5 3 3.5 4 4.5
Size mm Total Pressure Pa: 3.5 5.3 7.5 10 13 21 30 40 53 67
450 x 300 Volume l/s 135 169 202 236 270 338 405 472 540 607
Sound Power NRLW - 14 20 24 28 35 40 44 49 54
Throw A 2.0 2.3 2.9 3.5 3.9 4.7 5.7 6.4 6.7 7.2
Throw B 1.5 1.8 2.1 2.4 3.0 3.7 4.3 5.2 5.5 6.1
Throw C 2.0 2.6 3.2 3.9 4.2 5.1 5.7 6.4 7.4 7.7
Throw D 1.9 2.0 2.8 3.4 3.8 4.5 5.3 5.8 6.6 7.2
Throw E 2.1 2.7 3.4 4.0 4.6 5.5 6.1 6.4 7.7 8.0
Throw F 3.0 3.8 4.3 5.1 5.9 6.8 8.3 9.8 10.8 12.0
Throw G 2.3 2.8 3.3 3.9 4.2 5.1 6.1 6.9 7.8 8.4
600 x 300 Volume l/s 180 225 270 315 360 450 540 630 720 810
Sound Power NRLW - 14 21 25 30 37 41 45 50 55
Throw A 2.1 2.7 3.4 4.0 4.5 5.5 6.1 6.4 7.7 8.0
Throw B 1.5 1.8 2.1 2.4 3.0 3.7 4.3 5.2 5.5 6.1
Throw C 2.3 2.9 3.5 4.2 4.8 5.7 6.1 6.9 7.7 8.2
Throw D 1.9 2.0 2.8 3.4 3.8 4.5 5.3 5.8 6.6 7.2
Throw E 2.4 3.0 3.7 4.3 4.9 5.8 6.1 7.4 7.7 8.4
Throw F 3.6 4.2 4.9 5.6 6.4 8.0 9.2 10.4 12.0 13.1
Throw G 2.5 2.9 3.6 4.2 4.8 5.7 6.7 7.5 8.2 9.2
450 x 375 Volume l/s 169 211 253 295 337 422 506 590 675 759
Sound Power NRLW - 14 21 25 30 36 40 45 50 55
Throw A 2.1 2.4 3.0 3.7 4.0 4.9 5.5 6.1 7.0 7.4
Throw B 1.8 2.1 2.7 3.0 3.7 4.3 5.2 5.5 6.1 7.0
Throw C 2.0 2.6 3.3 3.9 4.5 5.4 6.0 6.3 7.6 7.9
Throw D 1.2 1.5 1.8 2.1 2.4 3.0 3.3 3.9 4.5 5.1
Throw E 2.1 2.8 3.4 4.0 4.6 5.5 6.2 6.4 7.7 8.1
Throw F 3.3 4.0 4.7 5.3 6.1 7.6 9.0 10.2 11.9 13.2
Throw G 2.3 2.8 3.3 3.9 4.2 5.1 6.1 6.9 7.8 8.4
600 x 450 Volume l/s 270 337 405 472 540 675 810 945 1008 1215
Sound Power NRLW 11 17 23 30 35 40 44 48 53 58
Throw A 2.3 2.9 3.6 4.2 4.8 5.7 6.0 7.3 7.6 8.3
Throw B 2.1 2.4 3.0 3.7 4.0 4.9 5.5 6.1 7.0 7.4
Throw C 2.7 3.3 3.8 4.4 5.0 6.0 6.5 7.6 7.9 8.6
Throw D 2.4 3.2 3.9 4.5 5.1 6.0 6.5 7.7 8.0 8.7
Throw E 2.8 3.4 4.1 4.7 5.3 6.2 6.5 7.8 8.1 8.5
Throw F 3.8 4.8 5.7 6.3 7.2 8.9 10.1 11.8 12.5 14.7
Throw G 2.5 2.9 3.6 4.2 4.8 5.7 6.7 7.5 8.2 9.2
750 x 450 Volume l/s 337 422 506 590 675 843 1012 1182 1350 1519
Sound Power NRLW 11 17 24 30 36 41 45 49 55 59
Throw A 2.7 3.4 4.1 4.7 5.3 6.2 6.5 7.8 8.2 8.8
Throw B 2.1 2.4 3.0 3.7 4.0 4.9 5.5 6.7 7.0 7.4
Throw C 2.1 2.2 3.1 3.9 4.0 5.2 5.8 6.4 7.5 7.7
Throw D 2.4 3.2 3.9 4.5 5.1 6.0 6.5 7.7 8.0 8.7
Throw E 3.3 4.1 4.8 5.5 6.0 7.4 9.2 10.0 14.9 -
Throw F 4.0 4.9 5.7 6.5 7.3 8.6 10.3 11.3 13.2 14.8
Throw G - - - - - - - - - -
1050 x 450 Volume l/s 472 590 709 827 945 1181 1417 1654 - -
Sound Power NRLW 14 20 27 33 38 43 47 52 - -
Throw A 3.1 3.8 4.6 5.2 6.0 6.9 7.2 8.5 - -
Throw B 2.1 2.4 3.0 3.7 4.0 4.9 5.5 6.7 - -
Throw C 3.3 4.0 4.8 5.7 6.2 7.2 9.3 10.0 - -
Throw D 2.4 3.2 3.9 4.5 5.1 6.0 6.5 7.7 - -
Throw E 3.8 4.7 5.4 6.0 6.8 8.0 10.2 12.0 - -
Throw F 4.7 5.6 6.8 7.5 8.6 10.2 13.0 15.0 - -
Throw G - - - - - - - - - -

11
Model SA Louvre Face Ceiling Diffuser

Installation Guide
32W Surface (Standard fixing - FO) 32W Tee Bar

32 32
Overall OverallFlange Size
Flange Size = Tee Bar Centres 5

(Shown with F1 Fixing)

27BW Spring Tee Ceiling Alignment Clip Frame

X Dimension
required for
bracket
selection
X

Type F8 - Ceiling Alignment Clip Fixing

(Details of ceiling system and clip to be
supplied).
32
Overall Diffuser
= Tile Size 2

25TW/8 or 25TW/16 Tegular Edge 10W Recessed Flange

Tee Bar Centres

1mm
10
Overall Diffuser Face
= Tee Bar Centre 6
Overall Flange Size
(Size of Tee Bar to be advised)

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 Model SA Louvre Face Ceiling Diffuser

Dimensions Square Diffuser

Standard 32mm : Flat Flange and 27mm : Bevel Edge Flange
Size Range Square (Standard Sizes)
Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size
150 x 150 147 x 147 223 x 223 298 x 298
225 x 225 222 x 222 298 x 298 373 x 373
300 x 300 297 x 297 373 x 373 448 x 448
375 x 375 372 x 372 448 x 448 523 x 523
447 x 447 444 x 444 520 x 520 595 x 595
450 x 450 447 x 447 523 x 523 598 x 598

Overall
Size Range : Square (NON standard Sizes) Overall

Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size Standard 32mm
Minimum Cutout Size Bevel Edge Minimum Cutout Size
200 x 200 197 x 197 273 x 273 348 x 348 Diffuser Frame
Neck Neck
250 x 250 247 x 247 323 x 323 398 x 398

20
20

Type R Type R
350 x 350 347 x 347 423 x 423 498 x 498 = 84 = 84

400 x 400 397 x 397 473 x 473 548 x 548 Type G Overall Flange Type G Overall Flange
= 47 = 47
525 x 525 522 x 522 598 x 598 673 x 673 Removable core Removable core
for fixing and for fixing and
600 x 600 597 x 597 673 x 673 748 x 748 damper access damper access

25TW/8 or 16 Tegular Flange

Size Range Square (Standard Size)
Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size
338 x 338 343 x 343 474 x 474 483 x 483
348 x 348 345 x 345 484 x 484 493 x 493
438 x 438 435 x 435 574 x 574 583 x 583
448 x 448 445 x 445 584 x 584 593 x 593

Overall Overall

8mm Tegular
16mm Ecophon / Tegular Minimum Cutout Size
Minimum Cutout Size
Neck
Neck
20
20

Type R
Type R = 84
= 84

Overall Flange Type G Overall Flange

Type G
= 47
= 47
Removable core Removable core
for fixing and for fixing and
damper access damper access

10W Recessed Flange

Size Range : Square (Standard Size)
Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size
421 x 421 418 x 418 478 x 478 495 x 495
521 x 521 518 x 518 578 x 578 595 x 595

Overall

10W Minimum Cutout Size

Neck
20

Type R
= 84

Type G Overall Flange

= 47
Removable core
for fixing and
damper access
13
Model SA Louvre Face Ceiling Diffuser

Dimensions Rectangular Diffuser

Standard 32mm : Flat Flange and 27mm : Bevel Edge Flange Dimensional Data

Standard Size Range : Rectangular

Nom Neck Size Actual Neck Size Min Cut Out Size Overall Size
225 x 150 222 x 147 298 x 223 373 x 298
300 x 150 297 x 147 373 x 223 448 x 298
375 x 150 372 x 147 448 x 223 523 x 298
450 x 150 447 x 147 523 x 223 598 x 298

300 x 225 297 x 222 373 x 298 448 x 373

375 x 225 372 x 222 448 x 298 523 x 373
Overall
450 x 225 447 x 222 523 x 298 598 x 373
Standard 32mm
Minimum Cutout Size
375 x 300 372 x 297 448 x 373 523 x 448 Neck

450 x 300 447 x 297 523 x 373 598 x 448

20
Type R
= 84

450 x 375 447 x 372 523 x 448 598 x 523 Type G Overall Flange
= 47
Removable core
for fixing and
damper access

NON Standard Size Range : Rectangular

Nominal Neck Size Actual Neck Size Min Cut Out Size Overall Size
525 x 150 522 x 147 598 x 223 673 x 298
600 x 150 597 x 147 673 x 223 748 x 298

525 x 225 522 x 222 598 x 298 673 x 373

600 x 225 597 x 222 673 x 298 748 x 373

525 x 300 522 x 297 598 x 373 673 x 448

600 x 300 597 x 297 673 x 373 748 x 448
Overall

450 x 375 447 x 372 523 x 448 598 x 523

Bevel Edge Minimum Cutout Size
525 x 375 522 x 372 598 x 448 673 x 523 Diffuser Frame
Neck
600 x 375 597 x 372 673 x 448 748 x 523
20

Type R
= 84
525 x 450 522 x 447 598 x 523 673 x 598 Type G Overall Flange
= 47
600 x 450 597 x 447 673 x 523 748 x 598 Removable core
for fixing and
750 x 450 747 x 447 823 x 523 898 x 598 damper access

1050 x 450 1047 x 447 1123 x 523 1198 x 598

525 x 600 522 x 597 598 x 673 673 x 748

For Rectangular Diffusers 25TW/8 or 16 Tegular Flange and 10W

Recessed Flanges are only available upon special request.
Please refer to Air Diffusion Sales Office.

14
 Model SA Louvre Face Ceiling Diffuser

Ordering Information Diffuser

Example

Flange Style Model Damper Fixing Finish Size

32W SA4 R F0 83

32W 32mm wide flat SA1 Square Louvre Face F0 No fixing. See Page 13 /14
flange Diffuser, 1 way air pattern.
(Standard). F1 Countersunk
SA1L Rectangular Louvre screw holes in
Face Diffuser, 1 way air flange.
27BW 27mm wide
pattern, with blades parallel to
bevel edge flange.
longest side. F8 Spring Tee
(details of ceiling
25TW8 25mm wide SA1S Rectangular Louvre
type required).
stepped flange to suit Face Diffuser, 1 way air
8mm Tegular style pattern, with blades parallel to
ceiling grid. shortest side.
SA2 Square Louvre Face
25TW16 25mm
Diffuser, 2 way opposite air
wide stepped flange
pattern.
to suit 16mm Tegular
style ceiling grid. SA2C Square Louvre Face
Diffuser, 2 way corner air G Diffuser only. 0 Mill Finish
10W 10mm wide pattern. Extruded
flange to suit recessed R Diffuser with
SA2L Rectangular Louvre Aluminium.
style ceiling grid. OBD fitted.
Face Diffuser, 2 way opposite 82 Silver
air pattern, with blades Polyester Powder
parallel to longest side. Coat to RAL9006.
SA2S Rectangular Louvre
Face Diffuser, 2 way opposite 83 White
air pattern, withblades parallel Polyester Powder
to shortest side. Coat to RAL9010
(20% Gloss).
SA2C (left) Rectangular
Louvre Face Diffuser, 2 way 4 Black Eggshell
corner left air pattern. Stove Enamel
Finish.
SA2C (right) Rectangular
Louvre Face Diffuser, 2 way 6 Special Finish
corner right air pattern. (Details required
SA3 Square Louvre Face separately).
Diffuser, 3 way air pattern.
SA3L Rectangular Louvre
Face Diffuser, 3 way air
pattern, with blades parallel to
longest side.
SA3S Rectangular Louvre
Face Diffuser, 3 way air
pattern, with blades parallel to
shortest side.
SA4 Square or Rectangular
Louvre Face Diffuser, 4 way
air pattern. Important Note:
If the overall size is critical then it must be clearly stated on the order.
All Model SA air patterns are viewed from the diffuser face.
All orders must be addressed to AIR DIFFUSION, Ruskin Air Management Limited.

15
Model SA Louvre Face Ceiling Diffuser

Plenum Box Specification Sheet Metal

Material For plenum boxes having flush ends Standard Model Types
Standard is a minimum of 0.7mm thick separate hanging brackets/fixing lugs PBS 1 Standard unlined plenum box
galvanised or zinc coated steel. need to be fitted to allow independent with either 1 number centrally located
Construction support of diffuser and plenum box. circular or square/rectangular side entry
Plenum boxes are generally fabricated in spigot having no damper or equalising
Accessories
3 sections having tray ends, which are grid.
Joggled style plenum boxes or pan
either mechanically joined or spot welded adapters. PBS 2 Standard unlined plenum box
to form an airtight seal. Flush ends (no Spigot dampers include; quadrant, with either 1 number centrally located
tray indents) are also available. As teleflex operation or cord operated. circular or square/rectangular top entry
standard, spigots are side entry and spigot having no damper or equalising
located centrally. All boxes are supplied 12mm thick Class O internal lining.
grid.
with plain edges, as standard, (F0 fixing). Equalising grids (50% free area perforated
mesh). PBS 3 Unlined joggled plenum box
Standard Installation Method with 1 number centrally located circular or
The tray ends of the plenum box Turning Vanes.
square/rectangular side entry spigot
incorporate a 15mm indent, on each side Fixing lugs or special fixings (by others). having no damper or equalising grid.
to allow for 8mm drop rod fixings, which Flush Ends (No Indent).
gives space for holes to be drilled (by PA 1 Unlined pan adapter with 1
Finish number centrally positioned circular or
others) without disturbing the active
Self finish galvanised or zinc coated steel square/rectangular spigot having no
section.
as standard. damper or equalising grid.
Installation Options
Fixing lugs can be factory fitted if Black paint can be applied to internal
preferred or special fixing methods (by faces if required.
others) may be used.

Plenum Box Specification Pre-Insulated Phenolic Panels

Material the spread of flame. To satisfy Building Installation Options
Rigid phenolic insulation panels are faced Regulations/Standards, a Class O/low risk Pre-drilled angles/lugs can be factory
on both sides with a protective low has been achieved when subjected to fitted to the plenum or pan adapter to
vapour permeable, 25 micron black tests in accordance with the following; provide separate drop rod or wire support
aluminium foil reinforced with a 5mm fixing.
glass tissue scrim. With a nominal density BS 476: Part 6 (Fire tests on building
of 55 60 kg/m, an average compressive materials and structures. Method of test Accessories
strength of 249 Kpa and an average for fire propagation for products); and Spigot dampers including; quadrant,
flexural strength of 1,200 Kpa when teleflex operation or cord operated.
BS 476: Part 7 (Fire tests on building
tested to BS 2972: 1989. materials and structures. Method of test Equalising grids (50% free area mesh)
Environmental Properties to determine the classification of the Turning Vanes.
The phenolic insulation panels are entirely surface spread of flame of products).
CFC and HCFC free with zero Ozone Finish
Depletion Potential (ODP). Construction Non-reflective black foil on inside and
Pre-insulated plenum boxes are outside faces
Moisture Resistance constructed from individual panel sections
Each panel has a >90% closed cell and bonded along each edge using a Standard Model Types
structure which means they are resistant tape and heat treatment process to form PWS 1: Pre-insulated standard
to moisture penetration and are non- an airtight seal. A steel spigot collar is square/rectangular side entry plenum box,
wicking. Moisture Vapour Transmission of fitted and located centrally in either having 1 centrally positioned spigot.
Foil Facing, 1.21 x 10 g/MNS. plenums or pan adapters. As standard all PWS 2: Pre-insulated standard
Heat Resistance boxes are supplied with straight edges square/rectangular top entry plenum box
Suitable for a continuous operating and are secured to the diffuser neck by having 1 centrally positioned spigot.
temperature of 70 C and a maximum screws or pop rivets.
temperature of 80 C PWA- 1: Pre-insulated standard top entry
Standard Installation Method pan adapter, having 1 centrally positioned
Thermal Performance Due to the lightweight nature of the
Thermal conductivity on the standard spigot.
plenum boxes the combined diffuser and
panel is 0.021 W/m.K at 10 C (mean). plenum can be supported on the ceiling
Fire and Smoke grid, (subject to verification with ceiling
The panels are resistant to burning and supplier).

16
 Model SA Louvre Face Ceiling Diffuser

Selection Guide Plenum Boxes

Pressure Drop and Sound Ratings

The pressure drop given is for Spigot Velocity m/s 1.5 2.0 2.5 3.0 3.5 4.0
supply diffuser with damper
fully open. When the diffuser Pressure Drop Pa* 2 4 6 8 12 16
is installed with plenum box,
the pressure loss of the box
has to be added to the Sound Level NR* - - 25 30 35 40
diffuser. * The figures given are approximate - dependent upon spigot entry conditions.

Plenum Box Spigot Volumes

Diameter Spigot velocity m/s
(mm) 1.5 2.0 2.5 3.0 3.5 4.0
100 10 15 19 22 26 30
125 18 24 30 35 41 47
150 25 34 42 51 60 68
160 35 46 58 70 82 94
200 45 60 75 91 109 121
225 58 77 96 117 137 151
250 71 95 120 142 170 191
275 86 115 145 172 205 230
300 103 139 172 208 240 275
315 120 160 200 240 280 320
350 140 188 235 280 328 375
400 185 245 310 370 430 495
Air volumes in l/s.

Typical arrangement Model PBS-1

with circular spigot

17
Model SA Louvre Face Ceiling Diffuser

Dimensions Plenum Boxes Sheet Metal

Type PBS-1 Circular Spigot
G

20
Spigot Damper can be
supplied if required.

D
Top entry box Type
PBS-2
H

65

W Height (H) = D + 100 L

min as standard L + 30mm

Type PBS-1 Square/Rectangular Spigot

G
20

Spigot Damper can be

supplied if required.
E

Top entry box Type

PBS-2
H

65 F

W Height (H) = E + 100 L

min as standard L + 30mm

Type PBS-3 Joggled Box Circular Spigot

J K
G
20

Opposed Blade Damper

can be mounted in
Plenum Box. Alternative
D

position would be
H

behind diffuser.
65
Height H = D + 100mm
M

minimum as standard
Spigot Damper can be
W supplied if required L

Type PA-1 Pan Adaptor

D or E x F
65

H Min. without damper 30mm

H Min. with damper 80mm
H

LxW

For uniform air distribution it is recommended that plenum boxes are supplied with an equalising grid.

18
 Model SA Louvre Face Ceiling Diffuser

Dimensions Plenum Boxes Pre-Insulated Phenolic Panels

Type PWS - 1 = Circular, Side Entry Spigot (shown)
Type PWS - 2 = Circular, Top Entry Circular Spigot

20

30
PWS - 1 and PWS - 2

D
Height H = D + 110mm
minimum as standard.
H

65

20 W 20 20 L 20

Pre - Insulated Rigid Phenolic Panels

Type PWS - 1 = Square / Rectangular Side Entry Spigot (shown)

Type PWS - 2 = Square / Rectangular Top Entry Spigot
G
20

30

PWS - 1 and PWS - 2

Height H = E + 110mm
E

minimum as standard.
H

65
F

20 W 20 20 L 20

Pre - Insulated Rigid Phenolic Panels

Type PWA - 1 = Pan Adaptor with Circular

or Square / Rectangular Spigot
D or E x F
65
20

Note: H without
Damper = 50mm
H

Note: H with
Damper = 100mm
20 LxW 20

Pre - Insulated Rigid Phenolic Panels

19
Model SA Louvre Face Ceiling Diffuser

Ordering Information Plenum Boxes

Example

Model Internal Lining Spigot Damper Options Dimensions

PBS-1 U N 0

Sheet Metal
PA-1 Pan Adapter to suit U Standard Unlined N Plain spigot no 0 No options See example
square/rectangular diffuser Plenum Box damper below
1 Internal faces painted
with square or circular top
L 12mm Class O Q Quadrant damper black.
entry.
Internal Lining. fitted to spigot.
2 Equalising grid 50%
PBS-1 - Plenum box to suit
T Teleflex damper fitted free area mesh.
square/rectangular diffuser
to spigot.
with circular or square side 3 Fixing lugs fitted to
entry spigot. C Cord operated side of plenum.
damper fitted to spigot.
PBS-2 - Plenum box to suit 4 Profile ends on each
square/rectangular diffuser end of plenum.
with circular or square top
5 Hemmed Edge for
entry spigot.
secret strap fixing.
PBS-3 - Plenum box to suit
square/rectangular diffuser
with circular or square top
entry spigot.

Pre-Insulated Phenolic Panel

PWA-1 Pan Adapter to suit Pre-Insulated N Plain spigot no Hanging Brackets as See example
square/rectangular diffuser with damper Standard below
square or circular top entry.
Q Quadrant damper
PWS-1 - Plenum box to suit fitted to spigot.
square/rectangular diffuser with
T Teleflex damper fitted
circular or square side entry
to spigot.
spigot.
C Cord operated
PWS-2 - Plenum box to suit
damper fitted to spigot.
square/rectangular diffuser with
circular or square top entry
spigot.

Dimensions PBS - 1, PBS - 2, PWS - 1 and PWS - 2 Example

Neck Size

LxW
Plenum Height

H
Circular Spigot
Diameter

D
OR
( Sq. / Rect.Spigot
Width x Height

CxE
) Centre Line
of Spigot

G
450 x 450 350 250 0 0

Dimensions PA - 1, PBS - 3 and PWA - 1 Example

Neck Size

LxW
Plenum Height

H
Circular Spigot
Diameter

D
OR
( Sq. / Rect.Spigot
Width x Height

CxE
) Centre Line
of Spigot

F
Joggled
Section

JxK
Joggled
Height

M
450 x 450 75 250 0 0 0 0

0 Denotes Standard.
Important Note: All orders must be addressed to AIR DIFFUSION, Ruskin Air Management Limited.

20
 Model SA Louvre Face Ceiling Diffuser

Model SA Photo Gallery

Special 4 Way Air Pattern Typical Installation with Side Entry 4 Way Diffuser with Sheet Metal
Plenum Plenum Box having Side Entry Spigot

Sheet Metal Plenum Box with 4 Way Diffuser with Pre-Insulated Hanging Bracket for Pre-Insulated
Quadrant Spigot Damper Plenum Box having Side Entry Spigot Plenum Box

Rear view of Diffuser with OBD fitted Front view of Diffuser with Core
removed

21
Model SA Louvre Face Ceiling Diffuser

Product Range
Swirl, Displacement and High Induction Diffusers Circular Diffusers and
Air Valves

Perforated and Louvre Face Ceiling Diffusers

Slot and Fixed Blade Diffusers Cylinder and Jet Nozzle Diffusers

Floor Grilles

22
 Model SA Louvre Face Ceiling Diffuser

Product Range
Linear Grilles Wall and Ceiling Grilles

External Louvres

Miscellaneous Swirl, Displacement and High Induction

Diffusers

Perforated and Louvre Face Ceiling Diffusers

Slot and Fixed Blade Linear Diffusers

Cylinder and Jet Nozzle Diffusers

Circular Diffusers and Air Valves

Floor Grilles

Linear Bar Grilles

Grilles

External Louvres

Miscellaneous

23
 CREATIVE AIR SOLUTIONS

Telephone 0845 095 1212 Facsimile: (01707) 294170

International Code: +441707 Email: sales@air-diffusion.co.uk Website: www.air-diffusion.co.uk

Part of Ruskin Air Management Limited