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Form I-SSCBL/RPBL, P/N 149159 R8, Page 11
Roof Curb Dimensions for Model RPBL
Size
400
500/600
700
800
1050
1200
Option CJ1 - Roof Curb for RPBL
A
inches
82-1/4
108-1/4
108-1/4
108-1/4
134-1/4
134-1/4
mm
2089
2750
2750
2750
3410
3410
B
inches
54-1/2
43-9/16
49-1/16
54-1/2
49-1/16
54-1/2
mm
1384
1106
1246
1384
1246
1384
C*
inches
78-1/2
104-1/2
104-1/2
104-1/2
130-1/2
130-1/2
mm
1994
2654
2654
2654
3315
3315
D*
inches
50-13/16 39-13/16 45-5/16 50-13/16 45-5/16 50-13/16
mm
1291
1011
1151
1291
1151
1291
Wt
lbs
150
167
173
179
202
208
kg
68
76
78
81
92
94
Option CJ2 - Roof Curb for RPBL with
Factory-Installed
Downturn Plenum, Option AQ5 or AQ8
A
inches
106-1/4
132-1/4
132-1/4
132-1/4
158-1/4
158-1/4
mm
2699
3359
3359
3359
4020
4020
B
inches
54-1/2
43-9/16
49-1/16
54-1/2
49-1/16
54-1/2
mm
1384
1106
1246
1384
1246
1384
C*
inches
102-1/2
128-1/2
128-1/2
128-1/2
154-1/2
154-1/2
mm
2604
3264
3264
3264
3924
3924
D*
inches
50-13/16 39-13/16 45-5/16 50-13/16 45-5/16 50-13/16
mm
1291
1011
1151
1291
1151
1291
Wt
lbs
177
193
199
205
228
234
kg
80
88
91
93
103
106
Size
400
500/600
700
800
1050
1200
Option CJ4 - Roof Curb for RPBL with
Field-Installed
** Cooling
Coil Cabinet, Option AU2 or AU3
A
inches
150-1/4
165-1/4
170-3/4
176-1/4
1 -3/4
202-1/4
mm
3816
4197
4337
4477
4997
5137
B
inches
54-1/2
43-9/16
49-1/16
54-1/2
49-1/16
54-1/2
mm
1384
1106
1246
1384
1246
1384
C*
inches
146-1/2
161-1/2
167
172-1/2
193
198-1/2
mm
3721
4102
4242
4382
4902
5042
D*
inches
50-13/16 39-13/16 45-5/16 50-13/16 45-5/16 50-13/16
mm
1291
1011
1151
1291
1151
1291
Wt
lbs
227
231
243
255
271
282
kg
103
105
110
116
123
128
Option CJ5 - Roof Curb for RPBL with
Field-Installed
** Cooling
Coil Cabinet w/Downturn, Option AU11, AU12, AU13 or AU14
A
inches
174-1/4
189-1/4
194-3/4
200-1/4
220-3/4
226-1/4
mm
4426
4807
4947
5086
5607
5747
B
inches
54-1/2
43-9/16
49-1/16
54-1/2
49-1/16
54-1/2
mm
1384
1106
1246
1384
1246
1384
C*
inches
170-1/2
185-1/2
191
196-1/2
217
222-1/2
mm
4331
4712
4851
4991
5512
5652
D*
inches
50-13/16 39-13/16 45-5/16 50-13/16 45-5/16 50-13/16
mm
1291
1011
1151
1291
1151
1291
Wt
lbs
253
257
269
280
296
308
kg
115
117
122
127
134
140
*
C
and
D
are roof opening dimensions.
** Field installed means that the cooling coil cabinet with or without the downturn is factory assembled and shipped
separately. The roof curb is sized to accommodate the complete length of the system. The shipped-separate cooling
coil cabinet with or without a downturn must be lifted to the roof separately from the packaged system, set on the roof
curb, and attached to the furnace section (see instructions in Paragraph 6.3.6).
FIGURE 9A - Optional Roof
Curb and Dimensions for
Model RPBL
IMPORTANT: Top surface of the
roof curb MUST be sealed.
* Illustration is shown with an Option AQ5 or AQ8
downturn plenum. The system can have a variety
of configurations which affect installation.
• If the system does not have a downturn plenum,
the discharge is horizontal.
• Downturn plenum Options AQ5 and AQ8 are
factory installed to be lifted to the roof and set on
the roof curb as part of the packaged system.
• If the system has an Option AU2 or AU3 cooling
coil cabinet, the discharge is horizontal. If
the system has an AU11, AU12, AU13, AU14
cooling coil cabinet, there is a downturn plenum
with vertical discharge.
Options AU2, AU3,
AU11, AU12, AU13, and AU14 are not factory
installed. Options AU2, AU3, AU11, AU12,
AU13, and AU14 must be lifted to the roof
separately from the packaged system, set on
the roof curb, and attached to the furnace.
IMPORTANT:
Area enclosed by the roof curb must comply with clearance to
combustible materials. If roof is constructed of combustible materials, area
within curb must be either ventilated, left open, or covered with non-combus-
tible material which has an "R" value of at least 5.0. If area within curb is left
open, higher radiated sound levels may result.
Bottom Duct Connections
- The blower section and optional downturn plenum have
duct flanges for connection to return air and supply air ducts. Duct opening sizes and
curb spacing shown in
FIGURE 9D
are for currently manufactured curbs that are avail-
able from the system manufacturer.