Reznor RECC Unit Installation Manual - Manual (Page 13)

Form I-MAPSIII&IV, P/N 222917R9, Page 13
FIGURE 7C - Roof Curb
and Duct Opening
Dimensions
Dimensions - Downflow
Roof Curb Option
CJ31 for MAPS ® III & IV
Cabinet Sizes A, B, and
C
K 2-3/4”
(70mm)
M
1-1/2” (38mm)
L
J 1-1/2”(38mm)
A
H
B
G
1-1/2” (38mm)
1-1/2”
(38mm)
Supply
Air Duct
Connection Size
C x D Return
Air
Duct Connection Size
E x F
1-1/2”
(38mm)
Location NOTE: On
Cabinet Sizes A and B,
the supply air duct
connection (CxD) is
centered with Dimension
“G” (2A+B=G).
This is not true on
Cabinet Size C; check
the dimension table.
Dimension “A” is always
on the “access” side of
the system.
Airflow
NOTES: 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.
If area inside curb is open, roof opening dimensions MUST be no greater than: Cabinet A - 34-13/16"x69"
(884x1753mm); Cabinet B - 49-13/16"x69" (1265x1753mm); Cabinet C - 61-5/16"x97-7/8" (1557x2486mm).
When cutting only duct openings, cut opening 1" (25mm) larger than duct size to allow clearance for installation.
Top View
Cabinet
Size
RCB or RCC
Model Size
RDB or RDC
Model Size
Illustration Codes - FIGURE 7C
A B C D E F G H J K L M
Curb Dimensions for Cooling Only Model RCB, RCC, RDB, RDC by Cabinet Size, Model Size - inches (±1/8)
A 060, 078, 090, 118, 120, 136 084, 102, 114, 142, 144, 162 6-1/8 26-1/2 24 12 24 12 38-5/8 13-1/4 17-1/2 12-7/8 72-3/4 12-1/4
B 160, 186, 200 184, 196, 210, 222, 224, 236, 257 N/A N/A 36 12 36 12 53-5/8 13-1/4 17-1/2 12-7/8 72-3/4 12-1/4
C
190, 216 248, 262, 272, 288 19-3/8 32-3/8 30 18 45 15 65-1/8 20-1/4 24-3/4 17-7/8 101-5/8 13-1/4
298, 410 354, 370, 468, 482 10-3/4 49-1/2 47 18 45 15 65-1/8 20-1/4 24-3/4 17-7/8 101-5/8 13-1/4
Curb Dimensions for Cooling Only Model RCB, RCC, RDB, RDC by Cabinet Size and Model Size - mm (±3)
A 060, 078, 090, 118, 120, 136 084, 102, 114, 142, 144, 162 156 673 610 305 610 305 981 337 445 327 1848 311
B 160, 186, 200 184, 196, 210, 222, 224, 236, 257 N/A N/A 914 305 914 305 1362 337 445 327 1848 311
C
190, 216 248, 262, 272, 288 492 822 762 457 1143 381 1654 514 629 454 2581 337
298, 410 354, 370, 468, 482 273 1257 1194 457 1143 381 1654 514 629 454 2581 337
Cabinet
Size
RDCB or RDCC
Model Size
RDDB or RDDC
Model Size
Gas Heat
Size *
Illustration Codes - FIGURE 7C
A B C D E F G H J K L M
Curb Dimensions for Cooling/Gas Heat Makeup Air Model RDCB, RDCC, RDDB, RDDC by Cabinet Size & Model Size - inches (±1/8)
A
060, 078, 090, 118,
120, 136
084, 102, 114, 142, 144 100 9-7/8 19 18 12 24 12 38-5/8 13-1/4 17-1/2 12-7/8 72-3/4 12-1/4
084, 102, 114, 142, 144, 162
150 6-1/8 26-1/2 24 12 24 12 38-5/8 13-1/4 17-1/2 12-7/8 72-3/4 12-1/4
200 N/A N/A 24 12 24 12 38-5/8 13-1/4 17-1/2 12-7/8 72-3/4 12-1/4
B
078, 090, 118, 136,
160, 186, 200
102, 114, 142, 162, 184, 196,
210, 222, 224, 236, 257
250 6-1/8 41-1/2 36 12 36 12 53-5/8 13-1/4 17-1/2 12-7/8 72-3/4 12-1/4
300 N/A N/A 36 12 36 12 53-5/8 13-1/4 17-1/2 12-7/8 72-3/4 12-1/4
C 190, 216, 298, 410 248, 262, 272, 284, 354, 370,
468, 482
400 19-3/8 32-3/8 30 18 45 15 65-1/8 20-1/4 24-3/4 17-7/8 101-5/8 13-1/4
500 13-1/4 44-1/2 42 18 45 15 65-1/8 20-1/4 24-3/4 17-7/8 101-5/8 13-1/4
600 10-3/4 49-1/2 47 18 45 15 65-1/8 20-1/4 24-3/4 17-7/8 101-5/8 13-1/4
700 8-1/4 55 52 18 45 15 65-1/8 20-1/4 24-3/4 17-7/8 101-5/8 13-1/4
Curb Dimensions for Cooling/Gas Heat Makeup Air Model RDCB, RDCC, RDDB,RDDC by Cabinet Size and Model Size - mm (±3)
A
060, 078, 090, 118,
120, 136
084, 102, 114, 142, 144 100 251 483 457 305 610 305 981 337 445 327 1848 311
084, 102, 114, 142, 144, 162
150 156 673 610 305 610 305 981 337 445 327 1848 311
200 N/A N/A 610 305 610 305 981 337 445 327 1848 311
B
078, 090, 118, 136,
160, 186, 200
102, 114, 142, 162, 184, 196,
210, 222, 224, 236, 257
250 156 1054 914 305 914 305 1362 337 445 327 1848 311
300 N/A N/A 914 305 914 305 1362 337 445 327 1848 311
C 190, 216, 298, 410 248, 262, 272, 284, 354, 370,
468, 482
400 492 822 762 457 1143 381 1654 514 629 454 2581 337
500 337 1130 1067 457 1143 381 1654 514 629 454 2581 337
600 273 1257 1194 457 1143 381 1654 514 629 454 2581 337
700 210 1397 1321 457 1143 381 1654 514 629 454 2581 337
NOTE: See pages 71-72 for
cross-reference by Model
Size and Cabinet Size.
Cabinet
Size*
RECB, RECC Model Size * REDB, REDC Model Size *
* Electric
Heat Size
Illustration Codes - FIGURE 7C
A B C D E F G H J K L M
Curb Dimensions for Cooling/Electric Heat Makeup Air Model RECB, RECC, REDB, REDC by Cabinet Size and Model Size - inches (±1/8)
A 060, 078, 090, 118, 120, 136 084, 102, 114, 142, 144, 162
All
available
N/A N/A 24 12 24 12 38-5/8 13-1/4 17-1/2 12-7/8 72-3/4 12-1/4
B
078, 090, 118, 120, 136, 160,
186, 200
084, 102, 114, 142, 144, 162, 184, 196,
210, 222, 224, 236, 257
N/A N/A 36 12 36 12 53-5/8 13-1/4 17-1/2 12-7/8 72-3/4 12-1/4
C 190, 216, 298, 410 248, 262, 272, 288, 354, 370, 468, 482 10-3/4 49-1/2 47 18 45 15 65-1/8 20-1/4 24-3/4 17-7/8 101-5/8 13-1/4
Curb Dimensions for Cooling/Electric Heat Makeup Air Model RECB, RECC, REDB, REDC by Cabinet Size and Model Size - mm (±3)
A 060, 078, 090, 118, 120, 136 084, 102, 114, 142, 144, 162
All
available
N/A N/A 610 305 610 305 981 337 445 327 1848 311
B
078, 090, 118, 120, 136, 160,
186, 200
084, 102, 114, 142, 144, 162, 184, 196,
210, 222, 224, 236, 257
N/A N/A 914 305 914 305 1362 337 445 327 1848 311
C 190, 216, 298, 410 248, 262, 272, 288, 354, 370, 468, 482 273 1257 1194 457 1143 381 1654 514 629 454 2581 337