Carrier 39L - Manual (Page 5)

LEGEND
AF — Airfoil
CV — Constant Volume
DX — Direct Expansion
FC — Forward-Curved
FMB — Filter Mixing Box
MXB — Mixing Box
N.C.
— Normally Closed
N.O. — Normally Open
PIC
— Product Integrated Controls
VAV — Variable Air Volume
*The cv capacity rating is the flow (gpm) through a
valve at 1 psi pressure drop.
Fig. 2 — PIC Option Order Number
5