Roof curb packages 31 – Reznor RDF Parts Manuals User Manual
Page 31
Form P-RDF, P/N 270069 R6, Page 31
CODE 280 - Roof
Curb Packages and
Components
Each roof curb package for a
Model RDF system includes
two curb sides, one front, one
back, eight curb dividers for
creating supply and return
air ductwork in the curb, and
hardware for corner assembly
and for installing ductwork
dividers.
Roof Curb Option CJ3 for Model RDF Series 3 (See illustration below.)
RDF
Series 3
Pkg
P/N
2 Curb Side
Assembly
1 Curb Front
and Back Assy
3 , 4 , and 5 - Curb Dividers for
Ductwork
RDF-1
204368 (2) 204365
(2)
104655
(4)
203803 (2) 203804 (2) 203806
RDF-2
203980 (2) 204366
(2)
111508
(4
) 203977 (2) 203978 (2) 203979
RDF-3
204370 (2) 204369
(2)
111512
(4)
203662 (2) 203663 (2) 203664
Roof Curb Corner Hardware
For Top Two
"Holes"
8 5/16" x 1" Lag Screws,
P/N 16243
8 5/16" Lockwasher,
P/N 1333
For Bottom
Two "Holes"
8 5/16" x 3/4" Hex Head Cap Screw,
P/N 16247
8 5/16" Lockwasher,
P/N 1333
8 5/16-18 Hex Nut,
P/N 1035
Hardware to Assemble and Attach Dividers to make Ductwork Openings
64
#10 Sheetmetal Screws,
P/N 11813
B
A
C
D
1-7/8
(48)
1-7/8 (48)
1-7/8
(48)
Roof Curb
Ductwork
for Bottom
Discharge
(Option AQ1
or AQ3)
Roof Curb
Ductwork for
Optional Return
Air
Airflow
(See IMPORTANT
NOTE.)
Top View
Model RDF Series 3 - Reznor
®
Roof Curb and Duct Opening Dimensions
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.
RDF
-1
-2
-3
Dimensions of Roof Curb Option CJ3
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
** C and D are roof opening dimensions if curb area is
fully open.
Airflow
Assembled Dividers for Ductwork in the Roof Curb
Field-supplied ductwork may be either dropped in from the top resting
on the top flange or be attached to the bottom flange, using the dividers
as ductwork.
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
NOTES:
•
Drawings are not proportional for all sizes.
•
3/4" (19mm) measurement is the width of the
flanges where the roof curb mates with the
heater. Surface of flanges must be sealed.
•
When cutting duct openings in the roof, cut
opening 1” (25mm) larger than duct size opening
for installation clearance.
Roof Curb Duct Opening Dimensions
Code
RDF-!
RDF-2
RDF-3
inches
E
23-11/32
28-13/32
38
F
20-1/8
28-11/32
38
G
5
13-15/32
11-19/32
H
10-1/4
7
4-5/8
J
25-1/2
54-11/16
66-3/4
K
11-1/2
17-23/32
20-1/16
M
11-15/32
8
10-15/32
N
11-1/32
11/3/1932
17-1/4
mm
E
593
722
965
F
511
720
965
G
127
342
294
H
260
178
117
J
648
1389
1695
K
292
432
510
M
291
203
266
N
280
282
438