Reznor ADFH Option - Installation - Roof Curbs Assembly - Manual (Page 8)

Form I-OPT-C, Page 8
Roof Curb P/N's by Model & Cabinet Size * Cabinet A Cabinet B Cabinet C
Models RCB/RCC/RDB/RDC *All Sizes *All Sizes *All Sizes
Models RDCB/RDCC/RDDB/RDDC with Cabinet
& Gas Heat Size Combination
With Gas Heat
Sizes 100/150/200
With Gas Heat
Sizes 250/300
With Gas Heat Sizes
400/500/600/700/1000
Models RECB/RECC/REDB/REDC *All Sizes *All Sizes *All Sizes
ID on
Part
Roof Curb Package P/N (Option) 261699 (CJ50) 261700 (CJ50) 261701 (CJ49)
Component Descriptions Qty Component P/N's
A Curb End Assembly (solid) 1 261653 261654 261670
B Curb Side Assembly (insulated) 2 261655 261671
3 C's
Curb End Assembly (insulated) 1 261656 261657 261672
Duct Flanges (4pcs in one bundle) 4 261386 261387 261414
Return Air Cap (not used with return air) 1 261388 261389 261415
D Supply Duct End (solid insulated partition) 1 261658 261659 261673
E Supply Duct Bottom (insulated) (**2 pcs) **1 261660 261661 ** 261674 & 261428
F Supply Air Duct Bottom Liner (**2 pcs) **1 261394 261395 ** 261418 & 261429
G Air Baffle ("curve" in the supply duct) 1 268604 268605 268606
H Supply Air Duct Center Divider 1 261396 261397 261419
J Return Air Duct Partition 1 261662 261663 261675
K
Vertical Divider (lower part) between
Supply and Return Air Ducts
1 261666 261677
L
Divider (upper part) between Supply and
Return Air Ducts
1 261667 261668 261678
M Duct Divider Top Liner 1 261408 261409 261426
N Duct Divider Bottom Liner 1 261405 261424
P Supply Air Duct Large Top (insulated) 1 261664 261665 261676
Q Supply Air Duct Small Top (insulated) 1 261669 261679
Hardware Bag 1 262438 (see content list, left below)
* See Model Size / Cabinet Size Cross Reference on page 2. ** Curb bottom in Cabinet C is 2-piece.
Components and Application
Assembly and
Installation Instructions
for Option CJ49
and CJ50, Curbs for
Horizontal Airflow
1. Follow the Steps and refer to the curb assembly drawings
2. Position curb ends ( Codes A & "large" C ) and curb side rails ( Codes B & B ) as
shown in FIGURE 3A. Join the corners as illustrated.
Locate the 4-pc bundle labeled ( C ). Using sheetmetal screws from the hardware
package, attach the duct flange pieces to both the inlet and return air openings.
If not using return air in the installation, position the return air cap ( C ) over the
opening and attach. If a return air duct will be used, the cap is not needed.
1.0 Roof Curbs for
MAPS ® Cabinets
A, B, C (cont'd)
Assy Hardware Bag, P/N 262438 :
P/N Description Qty
1035 Nut 5/16" Hex-18 Thread 16
1333 Lockwasher 5/16 In. 20
16243 Hex Hd Lag Bolt 5/16” x
1-1/4”
4
16247 Cap Screw 5/16 X 3/4" 16
11813 S/M Screw #10-16x1/2
Ab Stalgd
125
66302 1-1/4x1/4 x 50 ft Sealant Tape
Counter
Flashing
(by installer;
install after
curb assembly) Insulation
2 x 4 Wood
Nailer
Cabinet
Cant Strip
(by installer) Weld, bolt,
or lag screw
curb to deck
structure.
1” Lag Screw and
Lockwasher
(1 per corner)
(4 per corner) 3/4” Hex Head Cap
Screws with Lockwashers and Hex Nuts
A
B
B
Return
Air
Cap
3 C’
s
FIGURE 3A - Assemble Curb Ends ( A&C )
and Curb Sides ( B&B )
3. Check the assembly for squareness. The curb must be adjusted so that the
diagonal measurements are equal within a tolerance of ±1/8” (±3mm).
4. Level the roof curb. To ensure a good weatherproof seal between the unit curb
cap and the roof curb, the roof curb must be leveled in both directions with no twist
end to end. Shim as required and secure curb to roof deck. ( NOTE: Install internal
ducts before flashing; see Step 5.)
FIGURE 3B -
Curb Detail
5. Install solid partition ( Code D ), duct bottom ( Codes E & F ), and air baffle ( Code
G ) using sheetmetal screws (See FIGURE 3C).
a) Position the solid partition ( Code D ) with insulation side toward the solid end
of the curb. Align the holes (push the insulation out of the way) and attach
partition to curb sides ( B & B).
b) Position insulated duct bottom ( Code E ) with insulation side up in the bottom
of the curb. Align the holes (push the insulation out of the way) and attach
partition to curb sides ( B & B). Attach the bottom to the partition (D).
c) Position the bottom liner ( Code F ) over the insulation in the bottom of the
curb. Align the holes and attach around the perimeter.
d) Position the air baffle ( Code G ) against the partition ( D). Align the holes and
attach. Align the air baffle with the holes in the bottom liner ( F) and attach.
1.3 Roof Curbs for
Horizontal Airflow
(Options CJ49 and
CJ50) (cont'd)
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
dimensions on page 10.
•
Verify components
received with those
listed. Each part is
labeled with an ID
letter and a P/N.
ID P/N by Cabinet Size
A A-261653 B-261654 C-261670
B A&B-261655 C-261671
C
A-261656 B-261657 C-261672
A- 261386 B-261387 C-261414
A-261388 B-261389 C-261415