25% VENT AIR//
ECONOMIZER
HOOD _.
AIR
OUT
HORIZONTALSUPPLY _
CURB (CRRFCURB013A00)
I
i
I
E
f//
\
TRANSITION DUCT
NOTE: CRRFCURB013A00 is a fully factory preassembled horizon-
tal adapter and includes an insulated transition duct. The pressure
drop through the adapter curb is negligible.
For horizontal return applications: The power exhaust and baro-
metric relief dampers must be installed in the return air duct.
T
14 3/4"
6"
FULLY INSULATED
SUPPLY PLENUM
/_ 2"X 1/4 f_ 1" INSULATION
/ SUPPORT TYR / 1 1/2 # DENSITY,
/ STITCH WELDED/STICK PINNED & GLUED
_-_ 12,,W __-_-___ "P'21_3
SEAM PANELS
ACCESSORY CURB
PACKAGE NO. HEIGHT DESCRIPTION
1'-1 1" Pre-Assembled, Horizontal
CRRFCURB013A00 (584 Adapter Roof Curb
Fig. 2 -- Horizontal Supply/Return Adapter Installation
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