Product Data – APSC FD 123
Items: Air Pressure Stabiliser for ceiling mounting which includes a separately mounted fire damper that
has been integrity tested to BS EN 1366-2:1999 and BS 476 part 20:1987 for a 4 hour duration + ECG (inlet side).
Materials: Aluminium / carbon steel frames and blades to suit application.
Standard Finish: RAL9010 powder coated white SteriTouch®, antimicrobial protection as standard.
Bearings: Stainless Steel ball roller type ‘sealed for life’ ball bearings.
Pressure Control Range: 5 – 30 Pa with a setting accuracy of +/- 1 Pa over the operating range..
Unit Selection:
To obtain an indicative size of an APS-FD 123 use Table A below to calculate the total blade
length of blade required and divided it into sections of equal length using values from Table B.
The blades can then be accommodated into single or dual column matrix frames.
Example:
Selecting a stabiliser capable of transferring 220 l/s (0.22m³/s)@ 14Pa.
Therefore 220 x 4.39 = 966 mm of total blade length.
Where: 220 (Volume of l/s)
4.39 (Factor from Table A relating to 14Pa)
Table A (Factors)
|
Pa
|
Factor
|
Pa
|
Factor
|
Pa
|
Factor
|
|
5
|
7.35
|
14
|
4.39
|
25
|
3.29
|
|
8
|
5.81
|
15
|
4.25
|
30
|
3.00
|
|
10
|
5.20
|
20
|
3.68
|
||
|
11
|
4.96
|
22
|
3.51
|
Divide this total into equal lengths using one of the standard blade lengths from Table B.
It is suggested that consideration should be made regarding any physical restrictions the building may impose before calculating the blade lengths of units.
Table B (Blade Lengths)
|
200
|
350
|
500
|
675
|
|
250
|
400
|
575
|
750
|
|
300
|
450
|
625
|
Therefore 966 divided by 2 (blades) = 483mm.
Round up to the nearest 25mm increment gives you 2 x 500 mm blades.
Where: 966 (Total blade length)
500 (Standard blade length from Table B)
Useful Tip: Using as few blades as possible will result in the most cost-effective solution.
Dimensions:
Nominal Size Matrix:
|
Height single row (base unit)
|
Height each additional row
|
Width single column
|
Width dual Column |
|
123mm
|
+133mm per row
|
Blade length
|
2 x blade length + 10mm |
Aperture Size Matrix:
|
Height single row (base unit)
|
Height each additional row
|
Width single column
|
Width dual Column |
|
141mm
|
+133mm per row
|
Blade length + 18mm
|
2 x blade length + 28mm |
Over flange Size Matrix:
|
Height single row (base unit)
|
Height each additional row
|
Width single column
|
Width dual Column |
|
187mm
|
+133mm per row
|
Blade length+ 64mm
|
2 x blade length + 74mm |
Downloads |
