AIR VENTILATION REFERENCE SECTION AND FAQs

RCM has been in the Air Distribution industry for many years and being familiar with many of our competitors and their products, we understand that due to the number of product options available, ordering and specifying products can be difficult due in part to complicated ordering codes.

So, we have tried to simplify the process by going back to basics.

Each product type has 3 letters corresponding to the individual product type i.e. LBG Linear Bar Grille, CFD Circular Floor Diffuser, FBL Fixed Blade Louvre etc.

Dependent on which type of product is specified, we then include additional codes for the option choices i.e. OB Opposed Blade Damper, RC Removable Core.

We decided to separate the Plenum Boxes, these also have multiple versions to choose from.  Once again, these simplified are, PBL Plenum Box Lined, PBU Plenum Box Un-lined, options such as CS Cord Spigot Damper are available for plenums.

If, at any time you need assistance with the product codes, please do not hesitate to call our Sales Team and they will be pleased to help.

Air volume – l/s, m3/s or m3/h

Pressure drop – Pa

Noise – dB(A), NC or NR

Throw – m

Temperature difference

Application – Sidewall/ceiling

Ceiling heights

Room layout

Grille/Diffuser location

Grille/Diffuser type

Max pressure drop for ceiling diffuser off FCU/VRV - 25-30Pa

Standard noise level for office environment - NC35

Air volume range for 4-Way Louvred Face - 20l/s - 350l/s

Air volume range for Perforated Diffuser - 20l/s - 200l/s

Air volume range for fixed Swirl Diffuser - 20l/s - 250l/s

Studio’s, Concert Hall’s, Theatre’s. - NC20 / 25dB(A)

Private Bedrooms, Religious Buildings, Conference/Lecture Rooms - NC25 / 30dB(A)

Hospitals, Hotel Rooms, Libraries, Cinema’s - NC30 / 35dB(A)

General Offices, School’s, Restaurant’s - NC35 / 40dB(A)

Toilets, Office Reception’s, Corridor’s, Shop’s - NC40 / 45dB(A)

Kitchen’s, Computer Room’s, Cafe’s, Swimming Pool’s, Warehouse - NC45 / 50dB(A)

TYPE S - STANDARD CUT IN

(Refer to product specific data sheet for dimensions)

TYPE M - MODULAR TILE REPLACEMENT

TYPE B - CLIP IN

(Note, clip in border for location purposes only. Recommend support by drop rods/plenum)

TYPE T - TEGULAR TILE REPLACEMENT

(X, Y & Z Dimension to be advised by client)