Reznor ADFH Option - Installation - Roof Curbs Assembly - Manual (Page 17)

Form I-OPT-C, P/N 132900 R17, Page 17
47-1
1/16”
(121
1mm)
Unit Airflow
Size of
Discharge
Duct Opening
for inserting
ductwork down
through
the roof curb.
Size of Return
Air Duct
Opening for inserting ductwork down through
the roof curb.
19-7/8”
(505mm)
26-3/4”
(679mm)
72” (1829mm)
4-7/16”
(113mm)
12-9/16”
(319mm)
35-21/32” (906mm)
4-1/2”
(114mm)
12-3/4” (324mm)
Top View
Showing Duct Opening Sizes
and Perimeter only of
Option CJ3 Roof Curb
5-21/32” (144mm)
RCB, RDB, RECB, REDB - All Sizes - 133-5/16” (3386mm)
RDCB, RDDB with Heat Sections 500, 600, 700, 800 - 133-5/16” (3386mm)
RDCB, RDDB with Heat Sections 1000, 1200, 1400, 1600 - 165-3/4” (4210mm)
FIGURE 5E -
Duct Opening
Dimensions and
Locations inside
Option CJ3 Roof
Curb for MAPS ® III
Cabinet D
3.0 Roof Curbs for
Z Series Model
ZQYRA
Reznor ® curb for Model ZQYRA, Option CJ3C, is a 16” (406mm) high, fully enclosed,
insulated curb. The roof curb designed for the Z Series ventilation unit includes integral
duct connections for supply air and return air making it very important to know the
orientation of the unit when installing the curb. See the illustrations in FIGURE
6A and the component list below. See dimensions in FIGURE 6D and orientation in
FIGURE 6C.
The roof curb is designed for ductwork to be installed from the top prior to setting the
unit. If ductwork is installed after the unit, field-fabricated custom connections will be
required as the unit does not have duct flanges.
Code Qty P/N Description
Roof Curb Rail and Cross Support Parts, Codes A, B, C, D, and E are ALWAYS used:
A 1 260215 Roof Curb Front Side
B 1 260216 Roof Curb Right End
C 1 260217 Roof Curb Left End
D 1 260218 Roof Curb Rear Side
E 1 259636 Roof Curb Center Support
Vertical Duct Support Parts (Codes F, G, H, J, K, L, M) are required if the application
has vertical supply and return air. Duct support parts are optional if installation uses
the horizontal supply and return air openings.
F 1 259637 Roof Curb Duct Cross Support (return air)
G 1 259638 Roof Curb Duct Cross Support (discharge air)
H 1 259639 Roof Curb Duct Cross Support (return air)
J 1 259640 Roof Curb Duct Center Support (discharge air)
K 1 259641 Duct Angle Support (discharge air right end)
L 1 259642 Duct Angle Support (discharge air front side)
M 1 259643 Duct Angle Support (return air right end)
Components in Option
CJ3C, Pkg P/N 260418,
for Model ZQYRA
Option CJ3C Roof Curb
Hardware Bag includes:
Qty P/N Description
10 16243 Hex Hd Lag Bolt 5/16
X 1-1/4” lg
18 1333 Lockwasher 5/16 In.
8 16247 Cap Screw 5/16 X
3/4” lg
8 1035 Hex Nuts
31 11813 S/M Screw #10-16x1/2
Ab Stalgd
66302 Roll of Sealant Tape,
1/4” x 1-1/4”
1. Verify that the roof curb components match those listed.
2. Position the roof curb end and side assemblies ( Codes A, B, C, D ) as shown in
FIGURE 6A. Fasten each corner using lag screws with lockwashers in the top
holes and cap screws with lockwashers and nuts in each of the other holes.
Install the center support ( Code E ).
Before continuing to Step 3, verify that the airflow orientation is correct.
3. Identify the duct supports that create the integral supply and return air ductwork.
NOTE: If the system is not using the vertical duct openings, the duct support parts
are not required but may be installed.
Position the duct support parts ( Codes F, G, H, J, K, L, M ) as shown in FIGURE
6A and attach. Use 1-1/4” lag screws with lockwashers when attaching supports to
the top portion of the curb rails with the wood nailer. Use sheetmetal screws in all
other locations.
Assembly and
Installation Instructions
for Z Series Roof Curb