®
Combat AT-Series
Indirect-Fired Air Turnover Units
Dimension and
Selection Guide
1.800.828.7450
™
Quality in Any Language
Download from Www.Somanuals.com. All Manuals Search And Download.
AT-Series Heating Unit with Filtration
K
DA
DA
DA
DA
H
J
F
F
LIFTING
ANGLES
CONTROL
PANEL
D
INSPECTION
AND RELIEF
PORT
E
SPLIT
FOR
SHIPMENT
C
G
RA
RA
RA
RA
L
N
L
M
B
M
A
FRONT VIEW
END VIEW
DIMENSIONS
LEGEND
AT-136 AT-148 AT-154 AT-236 AT-242 AT-248 AT-254 AT-260 AT-272
DA = Discharge Air
A
B
C
60
50
75
72
60
75
85
72
86
90
50
60
100
55
66
116
60
66
145
72
72
160
84
72
165
90
76
RA = Return Air
75 - 53
75 - 53 100 - 53
100 - 53 125 - 72
125 - 72 150 - 72
175 - 72
D
53
53
65
53
90
96
96
IMPORTANT NOTES:
• All dimensions are subject to change
without notice.
• Due to height of unit, additional support is
recommended on top of the unit.
• Dimension "F" is flue diameter. Flue located
on left side of unit for 1,000 MBH heat
exchanger and smaller; flue located on right
side of unit for 1,250 MBH heat exchanger
and larger.
• Dimensions "D" and "F" may vary depending
on heat exchanger size (ex. 45 = 450 MBH
heat exchanger).
• All dimensions are in inches.
E
F
35
35
35
35
35
35
35
35
35
45 - 6
75 - 6
45 - 6
75 - 6
45 - 6
75 - 6
45 - 6
75 - 6
75 - 6 175 - 12 300 - 14 300 - 14
70 - 6 100 - 8 100 - 8 225 - 12 450 - 16 450 - 16
100 - 8 100 - 8 100 - 8 100 - 8 125 - 10 125 - 10 300 - 14
125 - 10
175 - 12
G
H
J
K
L
3
24
48
.75
.75
6
3
24
48
.75
.75
6
3
3
24
48
.75
.75
6
3
30
48
.75
.75
6
3
4
36
48
.75
.75
6
4
36
48
.75
.75
6
4
40
48
.75
.75
6
36
48
.75
.75
6
30
48
.75
.75
6
M
N
3
3
3
3
3
3
3
3
3
3
Download from Www.Somanuals.com. All Manuals Search And Download.
AT-Series Cooling Unit with Filtration
H
DA
DA
DA
DA
F
D
LIFTING
ANGLES
M
SPLIT
FOR
G
SHIPMENT
C
RA
RA
RA
RA
L
E
J
J
K
A
K
B
FRONT VIEW
END VIEW
DIMENSIONS
LEGEND
AT-136 AT-148 AT-154 AT-236 AT-242 AT-248 AT-254 AT-260 AT-272
DA = Discharge Air
A
B
C
D
E
F
G
H
J
60
50
75
48
6
72
60
85
48
6
85
72
95
48
6
90
50
85
48
6
100
55
85
48
6
116
60
95
48
6
145
72
90
48
6
160
84
90
48
6
165
90
90
48
6
RA = Return Air
24
24
36
10
.75
.75
6
24
10
.75
.75
6
30
16
.75
.75
6
30
6
.75
.75
6
36
36
40
10
.75
.75
6
IMPORTANT NOTES:
• All dimensions are in inches.
• All dimensions are subject to change
without notice.
.75
.75
6
.75
.75
6
.75
.75
6
.75
.75
6
K
L
M
• Due to height of unit, additional support is
recommended on top of the unit.
3
3
3
3
3
3
3
3
3
N/A
N/A
N/A
N/A
N/A
N/A
50
50
50
4
Download from Www.Somanuals.com. All Manuals Search And Download.
AT-Series Heating and Cooling Unit with Filtration
K
DA
DA
DA
H
DA
E
LIFTING
ANGLES
F
F
CONTROL
PANEL
D
P
INSPECTION
AND
RELIEF PORT
Q
SPLIT
LIFTING
ANGLES
FOR
J
SHIPMENT
C
G
RA
RA
RA
RA
L
N
L
A
B
M
M
FRONT VIEW
END VIEW
DIMENSIONS
LEGEND
AT-136 AT-148 AT-154 AT-236 AT-242 AT-248 AT-254 AT-260 AT-272
DA = Discharge Air
A
B
C
60
50
75
72
60
85
85
72
95
90
50
85
100
55
85
116
60
95
145
72
90
160
84
90
165
90
90
RA = Return Air
75 - 53
75 - 53 100 - 53
100 - 53 125 - 72
125 - 72 150 - 72
175 - 72
D
53
53
65
53
90
48
96
48
96
48
IMPORTANT NOTES:
• All dimensions are subject to change
without notice.
• Due to height of unit, additional support
is recommended on top of the unit.
• Dimension "F" is flue diameter. Flue
located on left side of unit for 1,000 MBH
heat exchanger and smaller; flue located
on right side of unit for 1,250 MBH heat
exchanger and larger.
• Dimensions "D" and "F" may vary
depending on heat exchanger size
(ex. 45 = 450 MBH heat exchanger).
• All dimensions are in inches.
E
F
48
45 - 6
75 - 6
48
45 - 6
75 - 6
48
45 - 6
75 - 6
48
45 - 6
48
48
75 - 6
75 - 6 175 - 12 300 - 14 300 - 14
75 - 6 100 - 8 100 - 8 225 - 12 450 - 16 450 - 16
100 - 8 100 - 8 100 - 8 100 - 8 125 - 10 125 - 10 300 - 14
125 - 10
175 - 12
G
H
J
K
L
M
N
P
Q
6
24
6
24
6
36
10
.75
.75
6
3
N/A
35
6
24
10
.75
.75
6
3
N/A
35
6
30
16
.75
.75
6
6
30
6
.75
.75
6
6
36
6
36
6
40
10
.75
.75
6
3
50
35
.75
.75
6
3
N/A
35
.75
.75
6
3
N/A
35
.75
.75
6
3
50
35
.75
.75
6
3
50
35
3
3
N/A
35
N/A
35
5
Download from Www.Somanuals.com. All Manuals Search And Download.
AT-Series Estimated Shipping Weights
ESTIMATED SHIPPING WEIGHTS - BURNERS (ALL MODELS)
IMPORTANT NOTES:
• All weights are in pounds.
• All weights are subject to change
without notice.
• To determine total unit weight, add
the appropriate burner weight to the
appropriate base unit weight
(as listed in performance information
tables).
300 -
625
626 -
938
939 -
1250
1251 -
1875
1876 -
2500
2501 -
3125
3126 -
5000
Input MBH
GAS
BURNER
Weight
155
190
230
290
300
340
340
22.1 -
36
2.5 -
4.5
4.6 -
6.7
6.8 -
8.9
220
939 -
1250
6.8 -
8.9
9.0 -
13.4
220
1251 -
1875
9.0 -
13.4
13.5 -
17.9
310
1876 -
2500
13.5 -
17.9
18 -
22
Input GPH
Weight
#2 OIL BURNER
125
300 -
625
2.5 -
4.5
125
626 -
938
4.6 -
6.7
360
2501 -
3125
18 -
22
385
3126 -
5000
22.1 -
36
Input MBH
COMBINATION
GAS / #2 OIL
BURNER
Input GPH
Weight
200
240
270
360
400
450
500
AT-Series Selection Guide
To create a complete air turnover unit, choose one base unit and one burner/manifold package using the tables on the
following pages. Prices apply for natural gas or LPG units.
1. Choosing A Base Unit Package
Base Unit Package choice is based on model choice. First locate the correct set of tables on the following pages which corresponds to the required
type of unit. Locate CFM and MBH requirements on the appropriate set of tables to determine the unit model. If more than one model is applicable,
choose the smaller model.
Btu/h Output Required = CFM * 1.08 * Temperature Rise
MBH = Btu/h / 1,000
2. Choosing A Burner/Manifold Package
Choose Burner/Manifold Package based on input, burner type and insurance requirements. Choose a Burner/Manifold Package that can fulfill the
maximum output of the model. Note that burner INPUTS are listed rather than outputs.
Burner Input = Burner Output / .8
Tables A: Air Turnover Heating Unit Performance Information
(Additional configurations are available upon request.)
AT-136
AT-248
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
Temp. Rise
Range (°F)
CFM
Motor (HP)
CFM
Motor (HP)
4,500 1 (1 motor)
9,000 2 (1 motor)
12,000 3 (1 motor)
240
240
240
450
450
450
49 to 93
25 to 46
19 to 35
2,225
2,280
2,305
22,000 3 (2 motors)
35,000 5 (2 motors)
45,000 5 (2 motors)
45,000 5 (2 motors)
240
520
560
560
750
10 to 32
14 to 26
12 to 26
12 to 31
5,990
6,145
6,270
6,270
1,000
1,250
1,500
AT-148
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
3,255
3,300
AT-254
Temp. Rise
Range (°F)
CFM
Motor (HP)
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
7,670
8,060
Temp. Rise
Range (°F)
CFM
Motor (HP)
10,000 3 (1 motor)
16,000 3 (1 motor)
240
240
450
750
22 to 42
14 to 43
40,000 5 (2 motors)
60,000 7.5 (2 motors)
65,000 7.5 (2 motors)
560
600
600
1,750
2,250
2,500
13 to 41
9 to 35
9 to 36
AT-154
8,310
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
3,880
3,940
4,115
4,220
Temp. Rise
Range (°F)
CFM
Motor (HP)
AT-260
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
10,870
11,135
11,135
14,000 3 (1 motor)
22,000 5 (1 motor)
30,000 7.5 (1 motor)
30,000 7.5 (1 motor)
240
240
520
560
450
750
1,000
1,250
16 to 30
10 to 32
16 to 31
17 to 39
Temp. Rise
Range (°F)
CFM
Motor (HP)
54,000 5 (2 motors)
61,000 7.5 (2 motors)
74,000 7.5 (2 motors)
600
720
720
3,000
4,000
4,000
10 to 51
11 to 61
9 to 50
AT-236
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
3,945
3,990
Temp. Rise
Range (°F)
CFM
Motor (HP)
AT-272
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
11,720
12,185
12,185
Temp. Rise
Range (°F)
9,000 1 (2 motors)
18,000 2 (2 motors)
24,000 3 (2 motors)
240
240
520
450
750
1,000
25 to 46
12 to 39
20 to 39
CFM
Motor (HP)
4,115
62,000 5 (2 motors)
88,000 10 (2 motors)
100,000 10 (2 motors)
600
720
720
3,000
4,500
4,500
9 to 45
8 to 47
7 to 42
AT-242
Output
(MBH)
Output
(MBH)
Temp.
Rise
Base Unit
Weight
(lbs.)
CFM
Motor (HP)
Minimum Maximum Range (°F)
21,000 2 (2 motors)
31,000 3 (2 motors)
31,000 3 (2 motors)
240
520
560
750
1,000
1,250
11 to 33
16 to 30
17 to 37
4,990
5,115
5,240
6
Download from Www.Somanuals.com. All Manuals Search And Download.
Tables B: Air Turnover Heating Unit with Filtration Performance Information
(Additional configurations are available upon request.)
AT-136
AT-248
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
Temp. Rise
Range (°F)
CFM
Motor (HP)
CFM
Motor (HP)
4,500 1 (1 motor)
9,000 3 (1 motor)
12,000 5 (1 motor)
240
240
240
450
450
450
49 to 93
25 to 46
19 to 35
2,425
2,505
2,520
22,000 3 (2 motors)
35,000 5 (2 motors)
45,000 7.5 (2 motors)
45,000 7.5 (2 motors)
240
520
560
560
750
10 to 32
14 to 26
12 to 26
12 to 31
6,190
6,345
6,575
6,730
1,000
1,250
1,500
AT-148
Output
(MBH)
Minimum Maximum
240
240
Output
(MBH)
Base Unit
Weight
(lbs.)
3,455
3,470
AT-254
Temp. Rise
Range (°F)
CFM
Motor (HP)
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
7,870
8,310
Temp. Rise
Range (°F)
CFM
Motor (HP)
10,000 3 (1 motor)
16,000 5 (1 motor)
450
750
22 to 42
14 to 43
40,000 5 (2 motors)
60,000 10 (2 motors)
65,000 10 (2 motors)
560
600
600
1,750
2,250
2,500
13 to 41
9 to 35
9 to 36
AT-154
8,560
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
4,080
4,140
4,210
4,420
Temp. Rise
Range (°F)
CFM
Motor (HP)
AT-260
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
11,070
11,335
11,385
Temp. Rise
Range (°F)
14,000 3 (1 motor)
22,000 5 (1 motor)
30,000 10 (1 motor)
30,000 10 (1 motor)
240
240
520
560
450
750
1,000
1,250
16 to 30
10 to 32
16 to 31
17 to 39
CFM
Motor (HP)
54,000 5 (2 motors)
61,000 7.5 (2 motors)
74,000 10 (2 motors)
600
720
720
3,000
4,000
4,000
10 to 51
11 to 61
9 to 50
AT-236
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
4,145
4,240
AT-272
Temp. Rise
Range (°F)
CFM
Motor (HP)
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
CFM
Motor (HP)
9,000 1 (2 motors)
18,000 3 (2 motors)
24,000 5 (2 motors)
240
240
520
450
750
1,000
25 to 46
12 to 39
20 to 39
7.5 (2 mo-
tors)
62,000
600
3,000
9 to 45
12,160
4,270
88,000 10 (2 motors)
100,000 15 (2 motors)
720
720
4,500
4,500
8 to 47
7 to 42
12,385
12,515
AT-242
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
CFM
Motor (HP)
21,000 3 (2 motors)
31,000 5 (2 motors)
31,000 5 (2 motors)
240
520
560
750
1,000
1,250
11 to 33
16 to 30
17 to 37
5,240
5,270
5,445
Tables C: Air Turnover Cooling Unit with Filtration Performance Information
(For cooling applications, consult factory. Base Unit Weights do not account for inclusion of cooling coils or exclusion of heat exchanger.
Additional configurations are available upon request.)
AT-136
AT-248
CFM
Motor (HP)
Base Unit Weight (lbs.)
CFM
Motor (HP)
Base Unit Weight (lbs.)
4,500
9,000
12,000
1 (1 motor)
3 (1 motor)
5 (1 motor)
2,425
2,505
2,520
22,000
35,000
45,000
45,000
3 (2 motors)
5 (2 motors)
7.5 (2 motors)
7.5 (2 motors)
6,190
6,345
6,575
6,730
AT-148
AT-254
CFM
Motor (HP)
Base Unit Weight (lbs.)
CFM
Motor (HP)
Base Unit Weight (lbs.)
10,000
16,000
3 (1 motor)
5 (1 motor)
3,455
3,470
40,000
60,000
65,000
5 (2 motors)
10 (2 motors)
10 (2 motors)
7,870
8,310
8,560
AT-154
CFM
Motor (HP)
Base Unit Weight (lbs.)
AT-260
14,000
22,000
30,000
30,000
5 (1 motor)
5 (1 motor)
10 (1 motor)
10 (1 motor)
4,080
4,140
4,210
4,420
CFM
Motor (HP)
Base Unit Weight (lbs.)
54,000
61,000
74,000
5 (2 motors)
7.5 (2 motors)
10 (2 motors)
11,070
11,335
11,385
AT-236
AT-272
CFM
Motor (HP)
Base Unit Weight (lbs.)
CFM
Motor (HP)
Base Unit Weight (lbs.)
9,000
18,000
24,000
2 (1 motors)
3 (2 motors)
5 (2 motors)
4,145
4,240
4,270
62,000
88,000
100,000
7.5 (2 motors)
10 (2 motors)
15 (2 motors)
12,160
12,385
12,515
AT-242
CFM
Motor (HP)
Base Unit Weight (lbs.)
21,000
31,000
31,000
3 (2 motors)
5 (3 motors)
5 (3 motors)
5,240
5,270
5,445
7
Download from Www.Somanuals.com. All Manuals Search And Download.
Tables D: Air Turnover Heating/Cooling Unit with Filtration Performance Information
(For cooling applications, consult factory. Base Unit Weights do not account for inclusion of cooling coils or exclusion of heat exchanger.
Additional configurations are available upon request.)
AT-136
AT-248
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
Temp. Rise
Range (°F)
CFM
Motor (HP)
CFM
Motor (HP)
4,500 1.5 (1 motor)
240
240
240
450
450
450
49 to 93
25 to 46
19 to 35
2,425
2,505
2,520
22,000 5 (2 motors)
35,000 7.5 (2 motors)
45,000 10 (2 motors)
45,000 10 (2 motors)
240
520
560
560
750
10 to 32
14 to 26
12 to 26
12 to 31
6,190
6,345
6,575
6,730
9,000
5 (1 motor)
1,000
1,250
1,500
12,000 5 (1 motor)
AT-148
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
3,455
3,470
AT-254
Temp. Rise
Range (°F)
CFM
Motor (HP)
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
CFM
Motor (HP)
10,000 5 (1 motor)
16,000 7.5 (1 motor)
240
240
450
750
22 to 42
14 to 43
40,000 5 (2 motors)
60,000 10 (2 motors)
65,000 15 (2 motors)
560
600
600
1,750
2,250
2,500
13 to 41
9 to 35
9 to 36
7,870
8,310
8,560
AT-154
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
CFM
Motor (HP)
AT-260
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
11,070
11,335
11,385
Temp. Rise
Range (°F)
14,000 5 (1 motor)
22,000 7.5 (1 motor)
30,000 10 (1 motor)
30,000 10 (1 motor)
240
240
520
560
450
750
1,000
1,250
16 to 30
10 to 32
16 to 31
17 to 39
4,080
4,140
4,210
4,420
CFM
Motor (HP)
54,000 7.5 (2 motors)
61,000 10 (2 motors)
74,000 15 (2 motors)
600
720
720
3,000
4,000
4,000
10 to 51
11 to 61
9 to 50
AT-236
AT-272
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
CFM
Motor (HP)
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
CFM
Motor (HP)
9,000 1.5 (2 motors)
18,000 5 (2 motors)
24,000 5 (2 motors)
240
240
520
450
750
1,000
25 to 46
12 to 39
20 to 39
4,145
4,240
4,270
62,000 7.5 (2 motors)
88,000 15 (2 motors)
100,000 15 (2 motors)
600
720
720
3,000
4,500
4,500
9 to 45
8 to 47
7 to 42
12,160
12,385
12,515
AT-242
Output
(MBH)
Minimum Maximum
Output
(MBH)
Base Unit
Weight
(lbs.)
Temp. Rise
Range (°F)
CFM
Motor (HP)
21,000 5 (2 motors)
31,000 7.5 (2 motors)
31,000 7.5 (2 motors)
240
520
560
750
1,000
1,250
11 to 33
16 to 30
17 to 37
5,240
5,270
5,445
Installation Code and Annual Inspections:
All installations and service of ROBERTS GORDON® equipment must be performed by a contractor qualified in the installation and ser-
vice of equipment sold and supplied by Roberts-Gordon and conform to all requirements set forth in the ROBERTS GORDON® manuals
and all applicable governmental authorities pertaining to the installation, service and operation of the equipment. To help facilitate
optimum performance and safety, Roberts-Gordon recommends that a qualified contractor annually inspect your ROBERTS GORDON®
equipment and perform service where necessary, using only replacement parts sold and supplied by Roberts-Gordon.
Further Information: Applications, engineering and detailed guidance on systems design, installation and equipment performance is
available through ROBERTS GORDON® representatives. Please contact us for any further information you may require, including the
Installation, Operation and Service Manual.
This product is not for residential use.
This document is intended to assist licensed professionals in the exercise of their professional judgement.
Roberts-Gordon, LLC
1250 William Street
P.O. Box 44
Buffalo, NY 14240-0044 USA
Telephone: 716.852.4400
Fax: 716.852.0854
European Office:
Roberts Gordon Europe Limited
Telephone: +44(0)121 506 7700
Fax: +44(0)121 506 7701
Toll Free: 800.828.7450
© 2007 Roberts-Gordon, LLC All rights reserved. No part of this work covered by the copyrights herein may be reproduced or copied in any form
or by any means – graphic, electronic, or mechanical, including photocopying, recording, taping, or information
storage and retrieval systems – without written permission of Roberts-Gordon, LLC.
Printed in U.S.A.
CATDSGNA
Download from Www.Somanuals.com. All Manuals Search And Download.
2M 1107 Orig
|