Reznor ADFH Option - Installation - Roof Curbs Assembly - Manual (Page 14)

Form I-OPT-C, Page 14
2.0 Roof Curbs for MAPS ® III Models RCB, RDB, RDCB, RDDB, RECB, REDB Cabinet Size D
FIGURE 5A - Option CJ3 Roof Curb Pkg P/N's, Application, Components,
and Layout
2x6
Wood
Nailer
Insulation
1-5/8”
(41mm)
4”
(102mm)
16”
(406mm)
Cross-section
of curb rail
Roof Curb
Layout and
Components -
MAPS ® III
Cabinet Size D
A
B
C D E
H
F
G
K
J
Unit Airflow
Discharge Duct Opening
Return Air
Duct Opening
There are two sizes of curbs for MAPS ® III D Cabinet units. Verify that the curb pack-
age received is appropriate for the unit. Check components against the applicable list,
below .
Roof Curb Components
- Option CJ3 for
MAPS ® III Cabinet D
Option CJ3 Roof Curb Packages for
MAPS ® III for D Cabinet Sizes)
Pkg P/N 223041 for all Sizes of RCB,
RDB, RECB & REDB and all RDCB &
RDDB w/Heat Section 500, 600, 700, 800
Pkg P/N 223042 for all Sizes of
RDCB & RDDB w/Heat Section
1000, 1200, 1400, 1600
Code Component Description Qty P/N Qty P/N
A Rail Side Support Channel 4 222068 4 222068
B Curb Corner Support Angle 4 222069 4 222069
C Curb Cross Support 8 222072 8 222072
D Cross Support Splicing Bracket 4 222073 4 222073
E Curb Rail End 2 222899 2 222899
F Curb Side Rail Section 6 222900 4 222900
G Curb Side Rail Section -- N/A 2 222901
H Discharge Duct Side Support 2 255637 2 255637
J Return Air Duct End Support 1 255638 1 255638
K Return Air Duct Side Support 2 255639 2 255639
CAUTION: Before installation, recheck to be sure that the correct curb
has been ordered. Be sure that the curb selected matches the unit
ordered. Verify the dimensions of the curb received with the dimension
table. Roof curb installation is the responsibility of the installer.
Assembly and
Installation Instructions
for MAPS ® III Cabinet
Size D Roof Curb
1. Curb Rails - Position the roof curb rails as shown in FIGURE 5A above and 5D
on page 16. When installing a curb for a unit with heat section size 1000, 1200,
1400 or 1600, be sure to place the longer curb side pieces at the return air
end. Assemble the corners and sides as shown in STEPS 1 and 2 in FIGURE 5B.
2. Cross Supports - Position the four two-piece roof curb cross supports and
splice brackets in the locations shown in FIGURE 5D (page 16). Be certain to
turn supports so that the splice brackets will not be in the duct openings.
Assemble as shown in STEPS 3 and 4 in FIGURE 5B.
3. Discharge Duct Supports - Position the two discharge duct side supports as
shown in FIGURES 5A and 5D, and attach to cross supports as shown in STEP 5
in FIGURE 5B.
Note: If the installation
has horizontal inlet only
or horizontal discharge,
it is not necessary
to install the unused
duct supports. Cross
supports must always
be installed.
Assembly Hardware and Tape shipped with curb:
(24) P/N 163334, Cap Screw, 7/16-14 x 2-1/2" long (16) P/N 7328, Hex Nut 1/4-20 Keps
(40) P/N 163335, Cap Screw, 7/16-14 x 3/4" long (4) P/N 114485 1/4-28 x 2-1/2 Bolt
(64) P/N 15119, Lockwasher, 7/16-14 (4) P/N 114486, Hex Nut 1/4-28
(64) P/N 15117, Hex Nut, 7/16-14 (4) P/N 96854, 1/4" Ext Tooth Lockwasher
(16) P/N 47252, 1/4-20 x 5/8 Bolt 66302 1-1/4 x 1/4 x 50 ft Sealant Tape