Reznor ADFH Option - Installation - Roof Curbs Assembly - Manual (Page 30)

Form I-OPT-C, Page 30
6.0 Roof Curbs for
Model Series RDF
Roof Curb Option Packages include hardware and four factory-assembled curb pieces.
All other components required for installation are field supplied.
Components
and
Dimensions
- RDF Roof
Curbs
Roof Curb Option CJ3 for Model RDF Series 3 (See ITEMS in FIGURE 12A.)
RDF Series 3
Pkg
P/N
ITEM B -
Curb Side Assy
ITEM A - Curb Front
and Back (End) Assy
ITEMS C, D, and E - Curb
Dividers for Ductwork
RDF-1-20,1-40,1-50,1-65 204368 (2) 204365 (2) 104655 (4) 203803 (2) 203804 (2) 203806
RDF-2-80 and 2-120 203980 (2) 204366 (2) 111508 (4) 203977 (2) 203978 (2) 203979
RDF-3-180 and 3-260 204370 (2) 204369 (2) 111512 (4) 203662 (2) 203663 (2) 203664
B
E
A
C
D
C
C
E
B
C
D
A
FIGURE 12A - Roof
Curb Components and
Dimensions for Model RDF
IMPORTANT NOTE: Area
enclosed by roof curb must
comply with clearance to
combustible materials. If
the roof is constructed of
combustible materials, area
within the roof curb must be
ventilated; left open, or covered
with non-combustible material
which has an "R" value of at
least 5. If area within curb is left
open, higher radiated sound
levels may result.
CxD is area within curb.
Airflow
Assembled Dividers for Optional Return Air Ductwork in the Roof Curb
Bottom
Discharge
Supply Air
Opening
(E x F)
Return
Air
Opening
(J x K)
E
G
F H
J
K
M
N
3/4 (19)
3/4 (19)
Top View
Field-supplied ductwork may be either “dropped in” from the top resting on the
duct flanges or be attached to the duct flange from the bottom.
RDF 1-20,1-40,1-50,1-65 2-80 and 2-120 3-180 and 3-260
Option CJ3 for Model RDF Series 3
inches mm inches mm inches mm
A 84-5/8 2149 84-5/8 2149 131-3/4 3346
B 43-5/8 1108 67-9/16 1716 82-1/16 2084
C 80-7/8 2054 80-7/8 2054 128 3251
D 39-7/8 1013 63-13/16 1621 78-5/16 1989
NOTES: C x D are roof opening dimensions if curb area is fully
open. A x B are outside dimensions of curb rails.
FIGURE 12B - Model RDF Series 3 -
Roof Curb Duct Opening Dimensions
NOTES:
• Drawings are not proportional for all sizes.
• 3/4" (19mm) measurement is the width of the
dividers where the roof curb mates with the
heater. Top surfaces must be sealed.
• When cutting duct openings in the roof, cut
opening 1” (25mm) larger than duct size
opening for installation clearance.
• G, H, M, N are dimensions from duct opening
in the curb to the inside edge of the roof curb.
RDF
E F G H J K M N Weight
inches mm inches mm inches mm inches mm inches mm inches mm inches mm inches mm lbs kg
-1 23-11/32 593 20-1/8 511 5 127 10-1/4 260 25-1/2 648 11-1/2 292 11-15/32 291 11-1/32 280 133 60
-2 28-13/32 722 28-11/32 720 13-15/32 342 7 178 54-11/16 1389 17-23/32 432 8 203 11-3/32 282 167 76
-3 38 965 38 965 11-19/32 294 4-5/8 117 66-3/4 1695 20-1/16 510 10-15/32 266 17-1/4 438 236 107
Roof Curb Duct Opening Dimensions
for RDF Series 3