REVIEWED BLD2024-0778+INSTALLER_GUIDE6.12.2024_2.32.22_PM+4317999RECEIVED
Jun 14 2024 BLD2024-0778
CURB-IN-36A
n sta I l e rI's
SOERVICES
DEVCITY
ELO MFEN
1 H-HC60D7-1
DEPARTMENT
Guide
Library
Service Literature
Customer Property: Contains
Product Section
Unitary
wiring and service informa-
Product
Unitary Accessories
tion. Please retain.
Model
Roof Curbs, Ducts and Diffusers
Literature Type
Installer's Guide
Sequence
36A
Date
October 2001
File No.
SV-UN-ACC-CURB-IN-36A 10/01
Supersedes
CURB-IN-36
Models : Used With: Roof Curb
BAYCURB042A T*C036-060A, Y*C036-060A
BAYCURB043A T*C072-120A, Y*C072-120A
WSC072, 090, 120A
Curb shall be
insulated to a
minimum of R13 per
\n/.qF('. ctanrlarrlc
General
This manual describes the layout and installation proce-
dures required to properly assemble and install the roof
curb. Illustrations in Figure 7 for T*C036-060A, Y*C036-
060A, WSC036-060A units or Figure 15 for T*C072-120A,
Y*C072-120A, WSC072-120A units are provided for dimen-
sional data regarding roof opening construction.
Each curb package ships unassembled, along with the re-
quired hardware and gasketing material. Roof insulation,
cant strips, flashing (if desired), nails, and sheet metal
screws must be furnished by the installing contractor.
Initial Inspection
Compare the order number on the shipping label with the
accessory identification information on the ordering and
shipping documents to verify that the correct accessory has
been received.
Clearances
The recommended clearances for single -unit installations
are illustrated in Figure 7 for T*C036-060A, Y*C036-060A,
WSC036-060A units or Figure 15 for T*C072-120A,
Y*C072-120A, WSC072-120A units. These minimum re-
quirements are not only an important consideration when
determining unit placement, but they are also essential to
ensure adequate serviceability, maximum capacity, and
peak operation efficiency.
Any reduction of the unit clearances indicated in this illus-
tration may result in condenser coil starvation, or the recir-
culation of warm condenser air. Actual clearances which ap-
pear to be inadequate should be reviewed with a local sales
engineer.
Installation
Read the entire manual carefully to become familiar with
the roof curb installation procedures. If the roof curb will be
mounted on a new building, it can be assembled at any
convenient location and installed as soon as the roof sup-
port members are in place. As a general rule, the curb
should be placed directly on the roof support members. Use
tack welding or other suitable fastening method to secure
the roof curb in place.
The curb can also be mounted on a roof deck. In this case,
additional nailing plates must be provided directly below the
flanges of the curb to give further support, and to minimize
vibration. See Figures 17 and 18.
When the installation is on an existing building, hoist the
shipping container directly onto the roof.
The following warning complies with State of California law, Proposition 65.
A WARNING' This product contains
fiberglass wool insulation! Fiberglass dust and
ceramic fibers are believed by the state of California
to cause cancer through inhalation. Glasswool
fibers may also cause respiratory, skin, or eye
irritation. See precautionary and first aid measures.
Supply and Return Air Ductwork
All ductwork must be run and attached to the curb before
the unit is set into place. All ductwork must be fabricated
and installed by the installing contractor. To ensure proper
duct construction and installation, SMACNA recommenda-
tions should be closely followed.
Note: All field fabricated panels used must be
insulated. (See Figure 8 or Figure 16).
Roof Opening
For safety and sound considerations, do not cut out the en-
tire roof deck within the curb area.
Roof Support
The roof must be capable of adequately supporting the
weight of the rooftop unit as well as that of the curb; refer to
Figure 19 and Tables 1 & 2 for specific center -of -gravity,
corner weight information and accessory weights.
Units may be set either lateral or parallel to the roof support
members. The combined weight of the unit, accessories,
and curb should be evenly spaced between a minimum of
two (2) supports.
Ensure that the curb's position on the roof supports does
not interfere with the clearance required for the supply/re-
turn ductwork. See Figure 7 for T*C036-060A, Y*C036-
060A, WSC036-060A units or Figure 15 for T*C072-120A,
Y*C072-120A, WSC072-120A units.
Note: For convenience, it is suggested that the
starting collars for the supply and return ductwork
be installed before the curb is placed into position.
Roof Curb Installation
1. Set the curb into the proper position on the roof.
2. Be sure that the curb is level to insure proper flow of con-
densate from the unit.
To check the flatness of the curb, stretch lines diagonally
between opposite corners of the assembled curb. The
distance between the lines (at their point of intersection)
should not exceed 1/4". If the lines touch, reverse them
(place the top line on the bottom and the bottom line on
the top), and recheck the point of intersection. Shim un-
der the curb as required.
3. Check the curb assembly for squareness by measuring
diagonally between opposite corners of the curb. The
distances indicated by these two measurements should
be the same.
4. Wipe off the top of the curb rails and cross members and
apply the pressure -sensitive gasketing material to these
surfaces as shown in Figure 6 for T*C036-060A,
Y*C036-060A, WSC036-060A units or Figure 14 for
T*C072-120A, Y*C072-120A, WSC072-120A units.
5. Fasten the curb to the roof support members, or roof
deck. See Figure 17 and Figure 18.
6. Bring the roof material up to the curb as shown in Figures
17 and Figure 18. Place a piece of rigid insulation around
the curb and fasten it (from the inside), with nails.
7. Install cant strips as shown in Figure 17 of either 4" x 4"
wood (cut diagonally in half), concrete or insulation. With
the cant strips in place, bring the roofing felts up to the
top of the curb nailing strips. Push the felts up under the
lip of the curb and nail them tightly into position.
8. The roof curb installation is now complete and ready for
ductwork and unit installation.
Curb Assembly Instructions
T-0036-060A, Y"C036-060A, WSC036-060A
The individual component parts of the roofcurb have been
marked with part numbers to aid in assembly. Refer to Fig-
ures 1 through 5 for component part number and location in
the assembly process.
Part Number
Qty.
Part Description
1
1
Rail, Roof Curb
2
1
Rail, Roof Curb
3
2
Rail, Roof Curb
4
2
Channel, Cross member #1
5
1
Channel, Cross member #2
6
1
Channel, Return
7
1
Channel, Supply
8
2
Pan, Insulation
Figure 1
1. Assembly part
numbers 1, 2 and 3.
Figure 2
2. Install part numbers 4 and 6.
Figure 3
3. Install part numbers 5 and 7.
Figure 4
4. Install part number 4.
Figure 5
5. Install (2) part number 8.
Figure 6
6. Apply gasket.
Figure 7
Curb Dimensional Data
T-0036-060A, Y*C036-060A, WSC036-060A
3�'
ING� 0,
Figure 8
Duct Dimensional Data
T*C036-060A, Y-0036-060A, WSC036-060A
24 3/
(619 N
3�
16 3/16"
(411 MM)
C��P�PNCE
3�
18 1/16"
(459 MM)
r`MM��_1�[e7YflLll[e(3a' LILII
4
Curb Assembly Instructions
T-0072-120A, Y*C072-120A, WSC072-120A
The individual component parts of the roofcurb have been
marked with part numbers to aid in assembly. Refer to Fig-
ures 9 through 13 for component part number and location
in the assembly process.
Part Number
Qty
Part Description
1
1
Rail, Roof Curb
2
1
Rail, Roof Curb
3
2
Rail, Roof Curb
4
3
Channel, Cross member #1
5
2
Channel, Cross member #2
6
3
Pan, Insulation
Figure 9
1. Assembly part numbers 1, 2 and 3.
Figure 10
2. Assembly part numbers 4 and 5.
Figure 11
3. Assembly part numbers 4 and 5.
Figure 12
4. Assembly part number 4.
Figure 13
5. Assembly part number 6.
TI-PFI IF, -I TI-I�:_ RACE
Figure 14
6. Apply Gasket
GASKE
Figure 15
Curb Dimensional Data
T-0072-120A, Y-0072-120A, WSC072-120A
G�36 191�MM1 a1 MM
G��P�PN ':::X
46 3/8"
1178 MM
34 3/8"
873 MM
14"
355 MM
1�44MM
18 1 /2"
470 MM
1"
25 MM i
also -Op"MorsdO.M.4
c<,�,
6 5/8"
219 MM 80 1/2" �78„ /974A�
� 2045 MM r,"t, 11/f
V.
181/ " 831/8" I� i4
MM 10
25 MM okk
'9<
CC�99�� 84 1/2" 55459 7/8"
2146 MM 1265 MM
C /
�98'%7 51 MM 1280 MM �MM�
�79� 51 MM G� 36 l91
Figure 16
Duct Dimensional Data
T-0072-120A, Y-0072-120A, WSC072-120A
33 3/4"
875 MM
ALL FLANGES 1 1/4"
31 MM
17 3/4"
451 MM y
17 3/4"
451 MM
33 3/4"
875 MM
i
Figure 17
New Roof Construction
SECURE FLASHING TO _
CURB NAILER STRIP
FLASHING (FIELD SUPPLIED) —
SECURE FELT TO
RIGID INSULATION
OR2x12's
i
i
ROOFING FELT
i
i
4 X 4 CANT
(FIELD SUPPLIED)
Figure 18
Existing Roof Construction
SECURE FLASHING TO _
CURB NAILER STRIP
FLASHING (FIELD SUPPLIED) 1
SECURE FELT TO 77
RIGID INSULATION
OR2x12's i
i
ROOFING FELT
4X4CANT
(FIELD SUPPLIED)
RIGID INSULATION
OR 2 X 12's
(FIELD SUPPLIED)
SUPPORT CHANNEL
RIGID INSULATION
OR2X12's
(FIELD SUPPLIED)
WOOD NAILER
7
Table 1 Corner weights & Center of Gravity
Unit
Model
Net
Weight
Corner Wt. (Ibs)
Center of Gravity (In.)
A
B
I C
D
Length
Width
TSC036Al*
409
132
104
79
94
31
19
TSC036A(3,4,W)'
409
132
104
79
94
31
19
TSC048Al*
434
140
110
91
94
32
19
TSC048A(3,4,W)'
421
135
109
90
88
33
19
TSC060Al*
451
149
114
88
99
31
18
TSC060A(3,4,W)'
451
149
114
88
99
31
18
TSC072A(3,4,W)'
681
236
177
119
150
38
21
TSC090A(3,4,W)'
754
257
188
129
180
37
22
TSC092A(3,4,W)'
756
261
202
131
162
39
21
TSC102A(3,4,W)*
835
281
223
149
181
40
21
TSC120A(3,4,W)'
909
306
241
164
197
40
21
THC036Al*
426
139
108
84
95
32
19
THC036A(3,4,W)'
426
139
108
84
95
32
19
THC048Al*
468
146
113
97
111
31
20
THC048A(3,4,W)*
468
146
113
97
111
31
20
THC060Al*
518
165
124
105
124
31
19
THC060A(3,4,W)*
506
164
121
100
122
31
19
THC072A.(3,4,W)*
718
235
182
128
173
38
22
THC092A(3,4,W)'
857
289
222
148
197
38
21
THC102A(3,4,W)*
893
1 294
233
159
207
N
22
THC120A(3,4,W)*
982
323
253
178
229
39
22
Unit
Model
Net
Weight
Corner Wt. (Ibs)
Center of Gravity (In.)
A
B
I C
D
Length
Width
YSC036A1*(L,M)
453
143
116
90
104
32
19
YSC036A1*H
480
151
124
96
109
32
19
YSC036A(3,4,W)*(L,M)
453
143
116
90
104
32
19
YSC036A(3,4,W)*H
480
151
124
96
109
32
19
YSC048Al-(L,M)
478
151
122
102
103
33
19
YSC048A1*H
505
159
130
108
109
33
19
YSC048A(3,4,W)*(L,M)
465
146
121
101
1 97
1 33
19
YSC048A(3,4,W)*H
492
154
129
107
103
33
19
YSC060A1*(L,M)
494
160
127
99
108
32
18
YSC060Al*H
522
169
134
105
114
32
18
YSC060A(3,4,W)*(L,M)
494
160
127
99
108
32
18
YSC060A(3,4,W)*H
522
169
134
105
114
32
18
YSC072A(3,4,W)*L
720
245
188
129
158
39
21
YSC072A(3,4,W)*M
731
248
192
131
160
39
21
YSC072A(3,4,W)*H
735
249
193
132
161
39
21
YSC090A(3,4,W)*L
804
269
203
142
1 190
1 38
22
YSC090A(3,4,W)*M
808
270
204
143
191
38
22
YSC090A(3,4,W)*H
820
1 273
1 208
146
193
38
22
YSC092A(3,4,W)*L
806
273
217
143
172
40
21
YSC092A(3,4,W)*M
810
274
219
144
173
40
21
YSC092A(3,4,W)*H
822
277
222
147
175
40
21
YSC102A(3,4,W)*L
883
293
238
161
191
40
21
YSC102A(3,4,W)*M
887
294
239
162
192
40
21
YSC102A(3,4,W)*H
899
297
243
165
194
40
21
YSC120A(3,4,W)*L
962
319
257
177
208
40
21
YSC120A(3,4,W)*M
973
322
261
180
210
40
21
YSC120A(3,4,W)*H
1 87
1 325
1 265
183
1 213
1 40
21
YHC036A1*L,M
470
150
120
95
105
32
19
YHC036A1*H
497
158
128
101
110
32
19
YHC036A(3,4,W)*(L,M)
470
150
120
95
105
32
19
YHC036A(3,4,W)*H
497
158
128
101
110
32
19
YHC048Al*M
511
157
126
108
121
32
20
YHC048A1*H
539
166
133
114
126
32
20
YHC048A(3,4,W)*(L,M)
511
157
126
108
121
32
20
YHC048A(3,4,W)*H
539
166
133
114
126
32
20
YHC060A1*(L,M)
562
176
137
116
133
31
20
YHC060Al*H
574
179
140
119
136
32
20
YHC060A(3,4,W)*(L,M)
550
175
133
110
131
31
19
YHC060A(3,4,W)*H
561
178
137
113
134
31
19
YHC072A(3,4,W)*L
756
245
193
137
181
39
22
YHC072A(3,4,W)*M
768
248
197
140
183
39
22
YHC072A(3,4,W)*H
772
249
198
141
184
39
22
YHC092 3,4,W *L
907
302
238
161
207
39
22
YHC092A(3,4,W)*M
911
1 303
1 239
162
208
39
22
YHC092A(3,4,W)*H
923
306
243
165
210
39
22
YHC102A(3,4,W)*L
942
306
247
171
217
39
22
YHC102A(3,4,W)*M
946
307
248
172
218
39
22
YHC102A(3,4,W)*H
957
310
252
175
220
40
22
YHC120A(3,4,W)*L
1035
336
269
191
240
39
22
YHC120 3,4,W *M
1047
339
272
194
242
39
22
YHC120A(3,4,W)*H
1060
342
277
197
245
40
1 22
Unit
Model
Net
Weight
Corner Wt. (Ibs)
Center of Gravity (In.)
A
B
C
D
Length
Width
WSC036Al*
442
138
110
88
105
31
19
WSC036A(3,4,W)'
442
138
110
88
105
31
19
WSC048A1*
474
151
114
95
114
31
19
WSC048A(3,4,W)*
474
151
114
95
114
31
19
WSC060Al*
492
160
118
97
117
31
19
WSC060A(3,4,W)*
492
160
118
97
117
31
19
WSC072A(3,4,W)*
772
259
196
136
181
38
22
WSC090A(3,4,W)*
794
272
1 200
137
185
38
22
WSC 1 20A(3,4,W)*
941
320
1 243
162
215
38
21
Note: Corner weights are given for information only.
Unit is to be supported continuously by a curb or
equivalent frame support.
Figure 19 Center of Gravity
die
Table 2
T*C036-060A, Y*C036-060A, WSC036-060A
Accessory Weights (Lbs.)
Option /Accessory Weight,
Description Net Ibs
Electric Heat
15
Econom izer
26
Motorized Damper
20
Manual Damper
16
Barometric Relief
7
Oversize Motor
5
Belt Drive Motor (3 phase only)
31
Hinged Access
10
Hail Guard
12
Through the Base: Electrical
8
Through the Base: Gas
5
Unit Disconnect Switch
5
Unit Circuit Breaker
5
Conv. Outlet: Unpowered
2
Conv. Outlet: Powered
38
TCI, LCI
1
N OVAR
8
HPC
1
Frostat
1
Crankcase Heater
1
Smoke Detector, Return
7
Smoke Detector, Supply
5
Clogged Filter Switch
1
Fan Fail Switch
1
Discharge Air Tube
3
Roofcu rb
70
Hard Start Kit
3
All Zone Sensors
1
Table 3
T*C072-120A, Y*C072-120A, WSC072-120A
Accessory Weights (Lbs.)
Option / Accessory
Weight,
Description
Net Ibs
Electric Heat
30
Economizer
36
Motorized Damper
30
Manual Damper
26
Barometric Relief
10
Power Exhaust
80
Oversize Motor
8
Hinged Access
12
Hail Guard
20
Through the Base: Electrical
13
Through the Base :Gas
5
Unit Disconnect Switch
5
Unit Circuit Breaker
5
Conv. Outlet: Unpowered
2
Conv. Outlet: Powered
38
TCI, LCI
1
N OVAR
8
HPC
1
Frostat
1
Crankcase Heater
1
Smoke Detector, Return
7
Smoke Detector, Supply
5
Clogged Filter Switch
1
Fan Fail Switch
1
Discharge Air Tube
3
Roofcurb
115
LP Conversion Kit
3
All Zone Sensors
1
California law, Proposition 65.
A WARNING' This product contains
fiberglass wool insulation. Fiberglass dust and
ceramic fibers are believed by the state of California
to cause cancer through inhalation. Glasswool
fibers may also cause respiratory, skin, or eye
irritation.
PRECAUTIONARY MEASURES
Avoid breathing fiberglass dust.
• Use a NIOSH approved dust/mist respirator.
• Avoid contact with the skin or eyes. Wear long-
sleeved, loose -fitting clothing, gloves, and eye
protection.
• Wash clothes separately from other clothing: rinse
washer thoroughly.
• Operations such as sawing, blowing, tear -out, and
spraying may generate fiber concentrations requiring
additional respiratory protection. Use the appropriate
NIOSH approved respirator in these situations.
First Aid Measures
Eye Contact -Flush eyes with water to remove dust.
If symptoms persist, seek medical
attention.
Skin Contact -Wash affected areas gently with soap
and warm water after handling.
11
OAmerican Standard Inc. 2001
Technical Literature Printed in USA
ivi