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View Full Version : Sizing of return air and supply air linear grilles







mariodemaio
11-09-2015, 03:42 PM
I'm installing a Daikin VRV system, 4 low static ducted hide away units and 3 floor mounted, vertical discharge units.

My question is how do I size the return air grille and the supply air grille. The client has requested the linear type.

I understand I need to start with the airflow of the particular unit on high speed but from there I have no idea how to proceed. Fortunately there is only on supply grille per unit.

Any assistance will be greatly appreciated.

PS. If I could have the examples in metric it would be greatly appreciated.

Brian_UK
11-09-2015, 04:26 PM
Airflow and throw decide the sizing.

Try this catalogue to get you started.....


https://www.google.co.uk/url?sa=t&source=web&rct=j&url=http://www.waterloo.co.uk/download/full-catalogues/diffusers-catalogue.pdf&ved=0CCUQFjADahUKEwirmYHYpO_HAhUDXRQKHb5OArk&usg=AFQjCNFx9GsZMcZlLmtZ4UDwy6iWm1Tzlw&sig2=6QP8yxEN03_hJl0L4kT37w

mariodemaio
14-09-2015, 06:59 PM
Thank you.