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Titus VAV Box sizes

826 views 2 replies 3 participants last post by  desert guy  
#1 ·
I am doing a VAV controls upgrade, and they are all TITUS boxes with parallel fan and reheat. All the box sizes range from 6" to 12"/14". A majority of the boxes say the size is 02, 03, and 05 on the cover. Normally it would say the size of the box diameter in inches. Does anybody know what the those numbers coordinate to in inches? So far I've been doing rough estimates with a tape measure and just from looking. Its hard since all the supply ducting has thick insulation on the outside.
 
#2 ·
According to the submittal found here on Titus' website, the "unit size" doesn't correlate with the duct size.

https://www.titus-hvac.com/Products/Terminal Units/ATQP

I made an assumption of what model you are working with based on your description. If your boxes have a product code, you might be able to find more info on the associated product page. Maybe there's some other indicator on the boxes that corresponds to duct size.
 
#3 ·
I would call Titus directly.
 
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