Fin Coils


Basic Measuring Guidelines

Rows
Horizontal rows of tubes in the fin pack

FPI - Fins Per Inch

FH - Fin Height

FL - Fin Length

SP1, SP2 - Sideplate Flanges
Called sideplates because coil face lays flat on the table during tube expansion

EP1, EP2 - Endplate Flanges
Also called tube sheets

CH - Casing Height
CH = SP1 + FH + SP2

CL - Casing Length
CL = EP1 + FL + EP2

CD = Casing Depth
CD must be greater than (# Rows) * (Centerline Distance Between Rows)

Max
Dimension from the edge of the fin pack to the outside of the return bend

L - Connection Length

"C" Dimension
Dimension from the edge of the fin pack to the outside of the header

OAL - Overall length
Dimension from the edge of the return bends to the outside of the header
OAL = MAX + FL + C

S, R, E, F - Connection Locations
Measured from the sides of the casing to the centerline of the connection




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