Rittling Regency
F-Series Enclosures
Heating
Cooling
Fresh Air
Clean Air
Rittling...
Custom-Building
Innovative Hydronic Systems
For Commerce, Industry and
Institutions Since 1946
Rittling long ago coined the phrase
“Reinventing Finned Tube” to describe
its commitment to design innovation...
and its unlimited custom engineering
capability. For decades, Rittling’s
constantly expanding inventory and
proven ability to control costs without
compromising the highest quality
standards in manufacturing have
made the name synonymous with
image, performance, reliability, price,
delivery and service.
Rittling’s diversity and flexibility have
freed architects from the constraints of
designing around limited catalog
selections of standard elements and
enclosure configurations. Today Rittling
engineers can draw on, or modify,
any of 60 different hydronic heating
elements...and 97 standard enclosure
models... to build any system an
architect can draw to tolerances of less
than .015 inch... at an exceptionally
competitive cost.
For the architects of the future, Rittling
will continue to advance finned tube
technology in still more new directions...
and develop ever more efficient, cost
effective hydronic heat transfer systems.
Over fifty years of quality,
innovation and service... and
we’re just getting warmed up.
A Zehnder Group Company
2
REGENCY F-SERIES
ENCLOSURES
When appearance and flexibility of the heating installation are primary
considerations, Regency F-Series enclosures offer thermal efficiency
and an emphatic vertical stance with unobtrusive louvers and sleek,
wall-hugging profiles. The five F-Series models can be supplied as
either low-profile enclosures, for use where floor-to-sill clearance is
minimal, or as standard-dimensioned units.
These sturdy enclosures are available with fronts and tops of 14, 16,
or 18-gauge cold rolled steel, in lengths from 1 to 8 feet in 6-inch
increments, and heights to accommodate one to three finned tubes.
Aluminum and stainless steel are also available.
For Standard Application:
FS and FT models
For Specialized Heating Environments:
FR, FF, FSOS and S-SL models.
Rittling Accessories Custom-Fit
Any Type of Installation Demands!
A full line of accessories is available to insure
a professional custom fit, including:
•
•
•
•
•
•
•
Full Height Back Panels
Mounting Channels
Self-Gauging, Snap Fit,
Expansion Cradles
Slip-In Pipe Hanger
Wall Trim Supports
3½-inch End Caps
• 12-inch wide End Caps with Access Door
• Inside and Outside Corners (90°, 135°)
• 12-inch wide Access Panels
with Access Doors
• 12-inch wide Removable Access Section
• Control Dampers: Knob-type, Security
Allenhead Operators
• Custom Column Enclosures
FEATURES AND RATINGS
page
FULL LINE OVERVIEW.............................................. 2-3
FS5/FS3 (Sloped Grille Enclosures)................................ 4-11
FT5/FT3 (Top Grille Enclosures)................................... 12-19
FF5/FF3 (Front Grille Enclosures)................................. 20-27
FR5/FR3 (Rounded Grille Enclosures)........................... 28-35
FSOS (Double Sloped Grille Enclosures)....................... 36-41
S-SL (Security Sloped Grille Enclosures)........................ 42-47
ACCESSORIES............................................................. 48-49
APPLICATIONS........................................................... 50-51
RATINGS CORRECTION DATA................................ 52-54
ENGINEERING SPECIFICATIONS........................... 55
WARRANTY................................................................. back cover
FS5/FS3 - SLOPED GRILLE
FS5 DIMENSIONS:
Depth: 53⁄8 inches
Height: 14, 20, 24 inches
FS3 DIMENSIONS:
Depth: 315⁄16 inches
Height: 8, 11, 14 inches
Applications:
Designed for high heat output
through a sloped louvered outlet.
Recommended to prevent enclosure
from being used as shelf or step.
FT5/FT3 - TOP GRILLE
FT5 DIMENSIONS:
Depth: 53⁄8 inches
Height: 14, 20, 24 inches
FT3 DIMENSIONS:
Depth: 315⁄16 inches
Height: 8, 11, 14 inches
Applications:
Provide an even blanket of heated
air through top louvers and emit
radiant heat off the front of the
cabinet. Ideal for exposed walls
and large window areas.
FF5/FF3 - FRONT GRILLE
FF5 DIMENSIONS:
Depth: 53⁄8 inches
Height: 14, 20, 24 inches
FF3 DIMENSIONS:
Depth: 315⁄16 inches
Height: 8, 11, 14 inches
Applications:
Provide heat through front panel
louvers when installations require
heated air to be diffused away from
exterior walls.
FR5/FR3 - ROUNDED GRILLE
FR5 DIMENSIONS:
Depth: 53⁄8 inches
Height: 14, 20, 24 inches
FR3 DIMENSIONS:
Depth: 315⁄16 inches
Height: 8, 11, 14 inches
Applications:
When high heat output is demanded
into room and along exterior walls.
Appealing enclosure design allows
heat to radiate through louvers
rounded along top and front edge
of cabinet.
FSOS - DOUBLE SLOPED GRILLE
DIMENSIONS:
Depth: 315⁄16 inches
Height: 14 inches
Depth: 53⁄8 inches
Height: 18, 24 inches
Applications:
Double sloped panels provide
required heat output when higher
wall mounting is called for to restrict
accessibility...such as in swimming
pool areas and gymnasiums.
S-SL - SECURITY SLOPED GRILLE
DIMENSIONS:
Depth: 53⁄8 inches
Height: 12, 18, 24 inches
Applications:
Meet interior design specifications requiring consistent and
even heat through conventional louvers and when security
of enclosure is imperative.
3
FS5/FS3
ENCLOSURE
SLOPED GRILLE
ENCLOSURES
BRACKET
APPLICATION:
Designed for high heat output
through a sloped and louvered outlet.
Recommended to prevent enclosure
from being used as shelf or step.
MOUNTING
CHANNEL DETAIL
TINNERMAN
NUT
ELEMENT:
• Steel or copper/aluminum.
• 1-foot to 12-foot lengths in 6-inch
•increments. (10-foot maximum length
• for steel.)
• Galvanized fins .032 inches thick,
• aluminum fins .016 inches thick.
POSITIVE LOCKING BOTTOM
MOUNTING CLIP DETAIL
Cutaway view of FS5 enclosure showing
4 1⁄4" x 4 1⁄4" fin configuration.
SECTION "X - X"
"B"
1:1
INTERNAL JOGGLE-JOINER
MOUNTING:
• Mounting channel
• Full back panel 20-gauge (18-gauge
available) galvannealed steel.
• Urethane gasket for air seal available.
HANGERS:
• Self-gauging, snap fit, expansion cradle •
• with positive-locking, bottom-mounting
• clip provides easy installation as well
• as security.
• 16-gauge galvannealed steel.
• Slide cradle will accommodate 13⁄4 -inch
•linear expansion for quiet operation.
"B"
"A"
6"
WALL
"A"
WALL
JOINTS:
• Internal joggle joiners provide hairline
•joints without any external fasteners.
6"
DAMPER:
• (Optional) Durable knob or security
• tamper proof available.
OPTIONAL LOUVERED INLETS:
• Horizontal bottom inlet louvers -FSHL
• Vertical louvered inlet-FSVL
• Model FSN, no louvers (not shown)
FIN
ENCLOSURE
ENCLOSURE:
• 14 to 18-gauge primed, phosphatized
CRS.
• 1-foot to 8-foot lengths in 6-inch
increments.
• Powder coated finish in decorator colors
• available.
• Aluminum or stainless steel available.
* 2-7/8"
*2-7/8"
2-1/16"
2-5/8"
4" MIN.
4" MIN
FLOOR
FLOOR
ARE BASED
ON 1" COPPER
TUBECOPPER TUBE
*CENTERLINES
BASED
ON 1"
* CENTERLINESARE
ARE BASED
ON 1"ON
COPPER
TUBE
*CENTERLINES
BASED
1" COPPER
TUBE
* CENTERLINESARE
DAMPER OPTION IS DEPENDENT ON ENCLOSURE SIZE & PIPING CONFIGURATIONS.
FS3
FS5
PIPE SIZE
STEEL
COPPER
FSVL
4
FSHL
FIN SIZE
A
B
⁄4", 1", 1 ⁄4" 2 ⁄4" X 4" 14"
N/A
3
1
1", 1 ⁄4" ⁄4", 1", 11⁄4" 31⁄4" X 31⁄4" 20" 53⁄8"
1", 11⁄4", 2 3⁄4", 1", 11⁄4" 41⁄4" X 41⁄4" 24"
3
1
3
PIPE SIZE
STEEL
COPPER
N/A
1", 11⁄4"
FIN SIZE
A
B
3
⁄4", 1", 11⁄4" 23⁄4" X 4" 8"
11" 315⁄16"
3
⁄4", 1", 11⁄4" 31⁄4" X 31⁄4"
14"
FS5
GUARANTEED RATINGS
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
770
790
1180
830
1230
1440
860
920
1290
950
1360
1570
950
1070
1440
1110
1500
1720
680
700
1040
730
1090
1280
760
810
1150
840
1200
1390
840
950
1280
980
1320
1520
600
620
920
650
960
1130
670
720
1010
740
1060
1230
740
840
1130
870
1170
1350
520
540
800
560
840
980
580
630
880
650
920
1060
650
730
980
750
1020
1170
STEEL FINNED TUBING
1" DIA. STEEL
1S-3¼ X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
11⁄4" DIA. STEEL
1¼S-3¼ X 3¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
*EDR - Equivalent
Direct Radiation area
(for steam heat)
per active (finned)
lineal foot of tube.
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.10
4.20
6.30
4.40
6.60
7.70
4.60
4.90
6.90
5.10
7.30
8.40
5.10
5.70
7.70
5.90
8.00
9.20
4.00
4.10
6.20
4.30
6.50
7.50
4.50
4.80
6.80
5.00
7.10
8.20
5.00
5.60
7.50
5.80
7.80
9.00
980
1010
1510
1060
1580
1850
1100
1180
1660
1220
1750
2020
1220
1370
1850
1420
1920
2210
960
980
1490
1030
1560
1800
1080
1150
1630
1200
1700
1970
1200
1340
1800
1390
1870
2160
750
760
1160
800
1220
1400
840
900
1270
940
1330
1540
940
1050
1400
1080
1460
1680
660
680
1030
710
1080
1240
750
790
1120
830
1170
1360
830
920
1240
960
1290
1490
590
600
910
630
950
1100
660
700
990
730
1040
1200
730
820
1100
850
1140
1320
510
520
790
550
830
950
570
610
860
640
900
1040
640
710
960
740
990
1140
IMPORTANT RATING INFORMATION Guaranteed ratings based on:
• Installation at height shown. (Lower heights are not recommended; for greater heights, refer to Table 1 on page 52.)
• Entering air temperature of 65°F. (For other temperatures, refer to Table 2 or Table 3 on page 52.)
• Steam at nominal 1 (actual 0.9) psig and 215°F. (For other conditions, refer to Table 2 on page 52.)
• Water average temperature (°F) shown and velocity of 3 fps or more. (For lower velocities, see Figure 1 on page 53.)
• The interrelationships of water velocities, flow rates, pressure drops, and temperature drops with respect to total Btu
requirements for various tube diameters appear in Figure 1 on page 53.
• Linear expansion of steel and copper finned tube with temperature is shown in Figure 4 on page 54.
5
FS5
GUARANTEED RATINGS
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
980
1010
1520
1040
1590
1820
1090
1170
1670
1230
1740
1990
1240
1390
1840
1420
1900
2200
870
890
1350
920
1400
1610
960
1040
1480
1090
1540
1760
1100
1230
1620
1260
1680
1950
750
770
1170
800
1220
1400
840
900
1280
940
1340
1530
950
1070
1410
1090
1460
1690
960
990
1460
1030
1500
1740
1080
1150
1570
1190
1660
1900
1210
1310
1690
1390
1790
2060
850
880
1280
910
1330
1540
950
1010
1390
1060
1460
1680
1070
1160
1490
1230
1580
1820
740
760
1120
790
1160
1340
830
880
1210
920
1270
1460
930
1010
1300
1070
1370
1580
STEEL FINNED TUBING
1" DIA. STEEL
1S-41⁄4 X 41⁄4-32
1S-41⁄4 X 41⁄4-40
1S-41⁄4 X 41⁄4-48
11⁄4" DIA. STEEL
11⁄4S-41⁄4 X 41⁄4-32
11⁄4S-41⁄4 X 41⁄4-40
11⁄4S-41⁄4X 41⁄4-48
2" DIA. STEEL
2S-41⁄4 X 41⁄4-32
2S-41⁄4 X 41⁄4-40
2S-41⁄4 X 41⁄4-48
6
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.90
6.10
9.20
6.30
9.60
11.00
6.60
7.10
10.10
7.40
10.50
12.00
7.50
8.40
11.10
8.60
11.50
13.30
1420
1460
2210
1510
2300
2640
1580
1700
2420
1780
2520
2880
1800
2020
2660
2060
2760
3190
11110
1140
1720
1180
1790
2060
1230
1330
1890
1390
1970
2250
1400
1580
2070
1610
2150
2490
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.80
6.00
8.80
6.20
9.10
10.50
6.50
6.90
9.50
7.20
10.00
11.50
7.30
7.90
10.20
8.40
10.80
12.40
1390
1400
2110
1490
2180
2520
1560
1660
2280
1730
2400
2760
1750
1900
2450
2020
2590
2980
1080
1120
1650
1160
1700
1970
1220
1290
1790
1350
1870
2150
1370
1480
1910
1580
2020
2320
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.80
6.00
9.00
6.20
9.40
10.80
6.50
7.00
9.90
7.20
10.30
11.80
7.30
8.20
10.90
8.40
11.30
13.00
1390
1440
2160
1490
2260
2590
1560
1680
2380
1730
2470
2830
1750
1970
2620
2020
2710
3120
1080
1120
1680
1160
1760
2020
1220
1310
1860
1350
1930
2210
1370
1540
2040
1580
2110
2430
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 5.
960
990
1490
1030
1560
1790
1080
1160
1640
1190
1700
1950
1210
1360
1810
1390
1870
2150
850
880
1320
910
1380
1580
950
1020
1450
1060
1510
1730
1070
1200
1600
1230
1660
1900
740
760
1140
790
1200
1370
830
890
1260
920
1310
1500
930
1040
1390
1070
1440
1650
FS5
GUARANTEED RATINGS
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
COPPER FINNED TUBING
¾" DIA. COPPER
¾C-2¾ X 4-32
¾C-2¾ X 4-40
¾C-2¾ X 4-48
¾C-3¼ X 3¼-40
3
⁄4" DIA. COPPER
¾C-3¼ X 3¼-32
¾C-3¼ X 3¼-48
¾C-4¼ X 4¼-40
3
⁄4" DIA. COPPER
¾C-4¼ X 4¼-32
¾C-4¼X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.57
4.81
7.21
5.09
7.92
9.10
5.42
5.89
7.65
6.13
8.31
9.52
5.80
6.60
7.87
7.12
8.58
9.85
1096
1155
1729
1221
1901
2185
1300
1412
1835
1472
1993
2284
1393
1584
1888
1709
2059
2363
855
901
1349
952
1483
1704
1014
1102
1431
1148
1555
1781
1086
1236
1472
1333
1606
1843
756
797
1193
842
1312
1507
897
975
1266
1016
1375
1576
961
1093
1302
1179
1421
1630
668
705
1055
745
1159
1333
793
862
1119
898
1216
1393
849
966
1151
1043
1256
1441
581
612
916
647
1007
1158
689
749
972
780
1056
1210
738
840
1000
906
1091
1252
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.30
5.80
8.10
6.10
9.00
10.30
5.90
6.50
9.40
6.90
9.70
10.70
6.40
7.40
9.70
7.90
10.00
11.00
1270
1390
1940
1460
2160
2470
1420
1560
2260
1660
2330
2570
1540
1780
2330
1900
2400
2640
990
1080
1510
1140
1680
1930
1110
1220
1760
1290
1820
2000
1200
1390
1820
1480
1870
2060
880
960
1340
1010
1490
1700
980
1080
1560
1150
1610
1770
1060
1230
1610
1310
1660
1820
770
850
1180
890
1320
1510
870
950
1380
1010
1420
1570
940
1090
1420
1160
1460
1600
670
740
1030
770
1140
1310
750
830
1200
880
1230
1360
820
940
1230
1010
1270
1400
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
6.90
7.30
10.90
7.70
12.00
13.80
8.20
8.90
11.60
9.30
12.60
14.40
8.80
10.00
11.90
10.80
13.00
14.90
1660
1750
2620
1850
2880
3310
1970
2140
2780
2230
3020
3460
2110
2400
2860
2590
3120
3580
1290
1370
2040
1440
2250
2580
1540
1670
2170
1740
2360
2700
1650
1870
2230
2020
2430
2790
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 5.
1150
1210
1810
1280
1990
2280
1360
1480
1920
1540
2080
2390
1460
1660
1980
1790
2150
2470
1010
1070
1600
1130
1760
2020
1200
1300
1700
1360
1840
2110
1290
1460
1740
1580
1900
2180
880
930
1390
980
1530
1760
1040
1130
1470
1180
1600
1830
1120
1270
1520
1370
1650
1900
7
GUARANTEED RATINGS
FS5
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
COPPER FINNED TUBING
1" DIA. COPPER
1C-2¾ X 4-32
1C-2¾ X 4-40
1C-2¾ X 4-48
1" DIA. COPPER
1C-3¼ X 3¼-32
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1" DIA. COPPER
1C-4¼ X 4¼-32
1C-4¼ X 4¼-40
1C-4¼ X 4¼-48
8
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.48
4.76
7.07
4.95
7.78
8.91
5.28
5.75
7.54
6.00
8.20
9.30
5.67
6.46
7.73
6.99
8.39
9.63
1076
1142
1696
1188
1868
2138
1267
1379
1808
1439
1967
2231
1360
1551
1855
1676
2013
2310
839
891
1323
927
1457
1668
988
1076
1411
1122
1534
1740
1060
1210
1447
1308
1570
1802
742
788
1170
820
1289
1475
874
952
1248
993
1357
1539
938
1070
1280
1157
1389
1594
656
696
1035
725
1139
1304
773
841
1103
878
1200
1361
829
946
1131
1023
1228
1409
570
605
899
630
990
1133
672
731
958
763
1042
1182
721
822
983
888
1067
1224
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
980
1070
1480
1120
1650
1890
1080
1200
1720
1270
1780
1980
1180
1350
1780
1440
1830
2020
860
950
1310
990
1460
1670
960
1060
1520
1120
1570
1750
1040
1190
1570
1280
1620
1790
660
730
1010
760
1120
1280
740
820
1170
860
1210
1350
800
920
1208
980
1250
1370
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
1250
1370
1900
1440
2110
2420
1390
1540
2210
1630
2280
2540
1510
1730
2280
1850
2350
2590
760
840
1160
880
1290
1480
850
940
1350
990
1390
1550
920
1060
1390
1130
1430
1580
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
5.20
5.70
7.90
6.00
8.80
10.10
5.80
6.40
9.20
6.80
9.50
10.60
6.30
7.20
9.50
7.70
9.80
10.80
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
6.80
7.20
10.70
7.50
11.80
13.50
8.00
8.70
11.40
9.10
12.40
14.10
8.60
9.80
11.70
10.60
12.70
14.60
1630
1730
2570
1800
2830
3240
1920
2090
2740
2180
2980
3380
2060
2350
2810
2540
3050
3500
1270
1350
2000
1400
2200
2530
1500
1630
2140
1700
2330
2640
1610
1830
2190
1980
2380
2730
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 5.
1120
1190
1770
1240
1950
2240
1320
1440
1890
1500
2060
2330
1420
1620
1940
1750
2100
2420
990
1060
1570
1100
1730
1980
1170
1270
1670
1330
1820
2060
1260
1430
1710
1550
1860
2140
860
920
1360
950
1500
1720
1020
1110
1450
1160
1580
1790
1090
1250
1490
1350
1620
1860
GUARANTEED RATINGS
FS5
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
COPPER FINNED TUBING
1¼" DIA. COPPER
1¼C-2¾ X 4-32
1¼C-2¾ X 4-40
1¼C-2¾ X 4-48
11⁄4" DIA. COPPER
1¼C-3¼ X 3¼-32
1¼C-3¼ X 3¼-40
1¼C-3¼ X 3¼-48
1¼" DIA. COPPER
1¼C-4¼ X 4¼-32
1¼C-4¼ X 4¼-40
1¼C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.43
4.68
6.93
4.90
7.65
8.77
5.23
5.67
7.40
5.94
8.06
9.19
5.61
6.41
7.59
6.88
8.25
9.52
1063
1122
1663
1175
1835
2105
1254
1360
1775
1426
1934
2204
1346
1538
1822
1650
1980
2284
829
875
1297
916
1431
1642
978
1060
1385
1112
1508
1719
1050
1199
1421
1287
1544
1781
733
774
1148
811
1266
1453
865
938
1225
984
1334
1521
929
1061
1257
1139
1366
1576
648
684
1015
717
1119
1284
765
829
1083
870
1180
1345
821
938
1111
1007
1208
1393
563
595
881
623
972
1116
665
721
941
756
1025
1168
714
815
965
875
1049
1210
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.80
5.50
7.70
5.80
8.60
9.90
5.70
6.20
9.00
6.50
9.30
10.40
6.10
7.10
9.30
7.60
9.60
10.70
1150
1320
1850
1390
2060
2380
1370
1490
2160
1560
2230
2500
1460
1700
2230
1820
2300
2570
900
1030
1400
1080
1610
1860
1070
1160
1680
1220
1740
1950
1140
1330
1740
1420
1790
2000
790
910
1280
960
1420
1640
950
1030
1490
1080
1540
1720
1040
1170
1540
1260
1590
1770
700
810
1130
850
1260
1450
840
910
1320
950
1360
1530
890
1040
1360
1110
1400
1570
610
700
980
740
1090
1260
730
790
1140
830
1180
1330
770
900
1180
960
1220
1360
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
6.70
7.10
10.50
7.40
11.60
13.30
7.90
8.60
11.20
9.00
12.20
13.90
8.50
9.70
11.50
10.40
12.50
14.40
1610
1700
2520
1780
2780
3190
1900
2060
2690
2160
2930
3340
2040
2330
2760
2500
3000
3460
1260
1330
1970
1390
2170
2490
1480
1610
2100
1680
2290
2610
1590
1820
2150
1950
2340
2700
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 5.
1110
1170
1740
1230
1920
2200
1310
1420
1860
1490
2020
2300
1410
1610
1900
1720
2070
2390
980
1040
1540
1090
1700
1950
1160
1260
1640
1320
1790
2040
1240
1420
1680
1530
1830
2110
850
900
1340
940
1480
1690
1010
1090
1430
1140
1550
1770
1080
1230
1460
1330
1590
1830
9
GUARANTEED RATINGS
FS3
LOW PROFILE
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
620
660
690
940
670
730
760
1050
760
830
860
1180
550
580
610
830
590
650
680
920
680
730
760
1040
480
510
540
730
520
570
600
820
600
650
670
920
420
450
470
640
460
500
520
710
520
560
580
800
650
690
730
990
700
760
810
1100
760
830
880
1200
560
600
640
860
610
660
700
950
660
720
760
1040
STEEL FINNED TUBING
11⁄4" DIA. STEEL
1" DIA. STEEL
1S-3¼ X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
1¼S-3¼ X 3¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
3.30
3.50
3.70
5.00
3.60
3.90
4.10
5.60
4.10
4.40
4.60
6.30
3.20
3.40
3.60
4.90
3.50
3.80
4.00
5.50
4.00
4.30
4.50
6.20
790
840
890
1200
860
940
980
1340
980
1060
1100
1510
770
820
860
1180
840
910
960
1320
960
1030
1080
1490
600
640
670
920
660
710
750
1030
750
800
840
1160
530
570
590
810
580
630
660
910
9660
710
750
1030
470
500
520
720
510
560
590
810
590
630
660
910
410
430
460
630
450
480
510
700
510
550
570
790
3
⁄4" DIA. COPPER
3
⁄4" DIA. COPPER
COPPER FINNED TUBING
¾C-2¾ X 4-32
¾C-2¾ X 4-40
¾C-2¾ X 4-48
¾C-3¼ X 3¼-32
¾C-3¼ X 3¼-40
¾C-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
4.40
4.70
5.00
6.80
4.80
5.20
5.50
7.50
5.20
5.70
6.00
8.20
4.20
4.50
4.70
6.40
4.50
4.90
5.20
7.10
5.00
5.40
5.70
7.90
1060
1130
1200
1630
1150
1240
1320
1800
1240
1360
1440
1970
1010
1080
1130
1540
1080
1180
1250
1700
1200
1300
1370
1900
830
880
940
1270
900
970
1030
1400
970
1060
1120
1540
790
840
880
1200
840
920
980
1330
940
1010
1070
1480
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 5.
10
730
780
830
1120
790
850
910
1240
850
940
990
1360
700
750
780
1060
750
810
860
1170
830
900
950
1310
620
660
690
940
660
720
760
1040
730
790
840
1160
540
570
600
820
570
630
660
900
640
690
730
1010
GUARANTEED RATINGS
FS3
LOW PROFILE
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
630
670
720
980
690
740
790
1090
740
820
870
1180
550
580
630
850
600
650
690
940
650
710
750
1030
600
650
690
940
670
720
760
1040
730
790
840
1140
520
560
600
820
580
630
660
900
640
690
730
990
1" DIA. COPPER
COPPER FINNED TUBING
1C-2¾ X 4-32
1C-2¾ X 4-40
1C-2¾ X 4-48
11⁄4" DIA. COPPER
11⁄4" DIA. COPPER
1" DIA. COPPER
1C-3¼ X 3¼-32
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1¼C-2¾ X 4-32
1¼C-2¾ X 4-40
1¼C-2¾ X 4-48
1¼C-3¼ X 3¼-32
1¼C-3¼ X 3¼-40
1¼C-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
4.30
4.60
4.90
6.70
4.70
5.10
5.40
7.40
5.10
5.60
5.90
8.10
1030
1100
1180
1610
1130
1220
1300
1780
1220
1340
1420
1940
800
860
920
1260
880
950
1010
1390
950
1050
1110
1510
710
760
810
1110
780
840
900
1230
840
920
980
1340
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
4.10
4.40
4.70
6.40
4.60
4.90
5.20
7.10
5.00
5.40
5.70
7.80
980
1060
1130
1540
1100
1180
1250
1700
1200
1300
1370
1870
760
830
880
1200
860
920
980
1330
940
1010
1070
1460
680
730
780
1060
760
810
860
1170
830
900
950
1290
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
4.10
4.40
4.70
6.40
4.50
4.90
5.20
7.10
5.00
5.40
5.70
7.80
3.60
3.90
4.10
5.60
4.50
4.80
5.10
7.00
4.90
5.30
5.60
7.70
980
1060
1130
1540
1080
1180
1250
1700
1200
1300
1370
1870
860
940
980
1340
1080
1150
1220
1680
1180
1270
1340
1850
760
830
880
1200
840
920
980
1330
940
1010
1070
1460
670
730
760
1050
840
900
950
1310
920
990
1050
1440
680
730
780
1060
750
810
860
1170
830
900
950
1290
590
650
680
920
750
790
840
1160
810
880
920
1280
600
650
690
940
660
720
760
1040
730
790
840
1140
520
570
600
820
660
700
740
1020
720
770
820
1130
520
560
600
820
570
630
660
900
640
690
730
990
460
500
520
710
570
610
650
890
630
670
710
980
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 5.
11
FT5/FT3
ENCLOSURE
TOP GRILLE
ENCLOSURES
BRACKET
APPLICATION:
Provide an even blanket of heated air
through top louvers and emit radiant
heat off the front of the cabinet. Ideal for
exposed walls and large window areas.
MOUNTING
CHANNEL DETAIL
ELEMENT:
• Steel or copper/aluminum.
• 1-foot to 12-foot lengths in 6-inch
•increments. (10-foot maximum length
• for steel.)
• Galvanized fins .032 inches thick,
• aluminum fins .016 inches thick.
POSITIVE LOCKING BOTTOM
MOUNTING CLIP DETAIL
Cutaway view of FT5 enclosure showing
4 1⁄4" x 4 1⁄4" fin configuration.
SECTION "X - X"
"B"
INTERNAL JOGGLE-JOINER
DAMPER
OPTIONAL
MOUNTING:
• Mounting channel
• Full back panel 20-gauge (18-gauge
available) galvannealed steel.
• Urethane gasket for air seal available.
HANGERS:
• Self-gauging, snap fit, expansion cradle •
• with positive-locking, bottom-mounting
• clip provides easy installation as well
• as security.
• 16-gauge galvannealed steel.
• Slide cradle will accommodate 13⁄4 -inch
•linear expansion for quiet operation.
"B"
DAMPER
OPTIONAL
6"
WALL
JOINTS:
• Internal joggle joiners provide hairline
•joints without any external fasteners.
"A"
"A"
WALL
6"
DAMPER:
• (Optional) Durable knob or security
• tamper proof available.
OPTIONAL LOUVERED INLETS:
• Horizontal bottom inlet louvers -FTHL
• Vertical louvered inlet-FTVL
• Model FTN, no louvers (not shown)
FIN
ENCLOSURE
TINNERMAN
NUT
ENCLOSURE:
• 14 to 18-gauge primed, phosphatized
CRS.
• 1-foot to 8-foot lengths in 6-inch
increments.
• Powder coated finish in decorator colors
• available.
• Aluminum or stainless steel available.
* 2-7/8"
* 2-7/8"
2-1/16"
2-5/8"
FLOOR
4" MIN.
4" MIN
FLOOR
ARE BASED ON 1" COPPER TUBE
* CENTERLINES ARE BASED ON 1" COPPER TUBE
* CENTERLINESDAMPER
OPTION IS DEPENDENT ON ENCLOSURE SIZE & PIPING CONFIGURATIONS.
FT3
FT5
PIPE SIZE
STEEL
COPPER
FTHL
12
FTVL
FIN SIZE
A
B
⁄4", 1", 1 ⁄4" 2 ⁄4" x 4" 14"
N/A
1", 11⁄4" 3⁄4", 1", 11⁄4" 31⁄4" x 31⁄4" 20" 53⁄8"
1", 11⁄4", 2 3⁄4", 1", 11⁄4" 41⁄4" x 41⁄4" 24"
3
1
3
PIPE SIZE
STEEL
COPPER
N/A
1", 11⁄4"
FIN SIZE
A
B
8"
11" 315⁄16"
3
⁄4", 1", 11⁄4" 31⁄4" x 31⁄4" 14"
3
⁄4", 1", 11⁄4"
23⁄4" x 4"
GUARANTEED RATINGS
FT5
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
Rows Of
Finned
Tube
(On 6-inch
Centers)
FINNED TUBE
MODEL
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
750
760
1160
800
1220
1400
840
900
1270
940
1330
1550
940
1050
1400
1080
1440
1650
660
680
1030
710
1080
1240
750
790
1120
830
1170
1370
830
920
1240
960
1280
1460
590
600
910
630
950
1100
660
700
990
730
1040
1210
730
820
1100
850
1130
1290
510
520
790
550
830
960
570
610
860
640
900
1050
640
710
950
740
980
1120
STEEL FINNED TUBING
1" DIA. STEEL
1S-3¼ X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
11⁄4" DIA. STEEL
1¼S-3¼ X 3¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
*EDR - Equivalent
Direct Radiation area
(for steam heat)
per active (finned)
lineal foot of tube.
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.00
4.10
6.20
4.30
6.50
7.50
4.50
4.80
6.80
5.00
7.10
8.30
5.00
5.60
7.50
5.80
7.70
8.80
3.90
4.00
6.10
4.20
6.40
7.40
4.40
4.70
6.70
4.90
7.00
8.10
4.90
5.50
7.40
5.70
7.60
8.70
960
980
1490
1030
1560
1800
1080
1150
1630
1200
1700
1990
1200
1340
1800
1390
1850
2110
940
960
1460
1010
1540
1780
1060
1130
1610
1180
1680
1940
1180
1320
1780
1370
1820
2090
730
750
1140
790
1200
1390
830
880
1260
920
1310
1510
920
1030
1390
1070
1420
1630
650
660
1010
700
1060
1230
730
780
1110
810
1160
1340
810
910
1230
950
1260
1440
570
590
890
620
940
1090
650
690
980
720
1020
1180
720
810
1090
840
1110
1270
500
510
770
540
820
940
560
600
850
630
890
1030
630
700
940
730
960
1110
IMPORTANT RATING INFORMATION Guaranteed ratings based on:
• Installation at height shown. (Lower heights are not recommended; for greater heights, refer to Table 1 on page 52.)
• Entering air temperature of 65°F. (For other temperatures, refer to Table 2 or Table 3 on page 52.)
• Steam at nominal 1 (actual 0.9) psig and 215°F. (For other conditions, refer to Table 2 on page 52.)
• Water average temperature (°F) shown and velocity of 3 fps or more. (For lower velocities, see Figure 1 on page 53.)
• The interrelationships of water velocities, flow rates, pressure drops, and temperature drops with respect to total Btu
requirements for various tube diameters appear in Figure 1 on page 53.
• Linear expansion of steel and copper finned tube with temperature is shown in Figure 4 on page 54.
13
GUARANTEED RATINGS
FT5
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
850
880
1320
910
1380
1580
950
1020
1450
1060
1510
1730
1070
1200
1600
1230
1650
1920
740
760
1140
790
1200
1370
830
890
1260
920
1310
1500
930
1040
1390
1070
1440
1660
840
870
1260
890
1310
1490
940
990
1360
1040
1430
1650
1060
1130
1460
1200
1550
1790
730
750
1090
770
1130
1300
820
860
1180
900
1250
1440
920
980
1270
1040
1350
1550
STEEL FINNED TUBING
1" DIA. STEEL
1S-4¼ X 4¼-32
1S-4¼ X 4¼-40
1S-4¼ X 4¼-48
11⁄4" DIA. STEEL
1¼S-4¼ X 4¼-32
1¼S-4¼ X 4¼-40
1¼S-4¼ X 4¼-48
2" DIA. STEEL
2S-4¼ X 4¼-32
2S-4¼ X 4¼-40
2S-4¼ X 4¼-48
14
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.80
6.00
9.00
6.20
9.40
10.80
6.50
7.00
9.90
7.20
10.30
11.80
7.30
8.20
10.90
8.40
11.30
13.10
1390
1440
2160
1490
2260
2590
1560
1680
2380
1730
2470
2830
1750
1970
2620
2020
2710
3140
1080
1120
1680
1160
1760
2020
1220
1310
1860
1350
1930
2210
1370
1540
2040
1580
2110
2450
960
990
1490
1030
1560
1790
1080
1160
1640
1190
1700
1950
1210
1360
1810
1390
1870
2170
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.70
5.90
8.60
6.10
8.90
10.20
6.40
6.80
9.30
7.10
9.80
11.30
7.20
7.70
10.00
8.20
10.60
12.20
1370
1420
2060
1460
2140
2450
1540
1630
2230
1700
2350
2710
1730
1850
2400
1970
2540
2930
1070
1110
1610
1140
1670
1910
1200
1270
1740
1330
1830
2110
1350
1440
1870
1540
1980
2290
950
980
1420
1010
1480
1690
1060
1120
1540
1170
1620
1870
1190
1280
1660
1360
1750
2020
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.70
5.90
8.80
6.10
9.20
10.60
6.40
6.90
9.70
7.10
10.10
11.60
7.20
8.00
10.70
8.20
11.10
12.80
1370
1420
2110
1460
2210
2540
1540
1660
2330
1700
2420
2780
1730
1920
2570
1970
2660
3070
1070
1110
1650
1140
1720
1980
1200
1290
1820
1330
1890
2170
1350
1500
2000
1540
2070
2390
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 13.
950
980
1460
1010
1520
1750
1060
1150
1610
1170
1670
1920
1190
1320
1770
1360
1840
2120
840
870
1290
890
1350
1550
940
1010
1420
1040
1480
1700
1060
1170
1570
1200
1620
1870
730
750
1120
770
1170
1350
820
880
1230
900
1280
1470
920
1020
1360
1040
1410
1630
GUARANTEED RATINGS
FT5
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
COPPER FINNED TUBING
¾C-2¾ X 4-40
3
⁄4" DIA. COPPER
¾C-2¾ X 4-32
¾C-2¾ X 4-48
¾C-3¼ X 3¼-40
3
⁄4" DIA. COPPER
¾C-3¼X 3¼-32
¾C-3¼ X 3¼-48
¾C-4¼ X 4¼-40
3
⁄4" DIA. COPPER
¾C-4¼ X 4¼-32
¾C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.48
4.76
7.07
4.95
7.78
8.97
5.23
5.75
7.73
6.00
8.44
9.63
5.67
6.55
9.10
6.99
9.71
10.84
1076
1142
1696
1188
1868
2152
1254
1379
1855
1439
2026
2310
1360
1571
2185
1676
2330
2600
839
891
1323
927
1457
1678
978
1076
1447
1122
1580
1802
1060
1225
1704
1308
1817
2028
742
788
1170
820
1289
1485
865
952
1280
993
1398
1594
938
1084
1507
1157
1608
1794
656
696
1035
725
1139
1312
765
841
1131
878
1236
1409
829
958
1333
1023
1421
1586
570
605
899
630
990
1140
665
731
983
763
1074
1224
721
833
1158
888
1235
1378
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.20
5.70
7.50
6.00
8.40
9.60
5.80
6.40
8.80
6.80
9.20
10.60
6.40
7.30
8.50
7.90
9.50
11.00
1250
1370
1800
1440
2020
2300
1390
1540
2110
1630
2210
2540
1540
1750
2040
1900
2280
2640
980
1070
1400
1120
1580
1790
1080
1200
1650
1270
1720
1980
1200
1370
1590
1480
1780
2060
1270
1350
2000
1400
2210
2540
1480
1630
2190
1700
2390
2730
1610
1860
2580
1980
2750
3070
860
950
1240
990
1390
1590
960
1060
1460
1120
1520
1750
1060
1210
1410
1310
1570
1820
760
840
1100
880
1230
1400
850
940
1290
990
1350
1550
940
1070
1240
1160
1390
1610
660
730
950
760
1070
1220
740
820
1120
860
1170
1350
820
930
1080
1010
1210
1400
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
6.80
7.20
10.70
7.50
11.80
13.60
7.90
8.70
11.70
9.10
12.80
14.60
8.60
9.90
13.80
10.60
14.70
16.40
1630
1730
2570
1800
2830
3260
1900
2090
2810
2180
3070
3500
2060
2380
3310
2540
3530
3940
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 13.
1120
1190
1770
1240
1950
2250
1310
1440
1940
1500
2120
2420
1420
1640
2280
1750
2440
2720
990
1060
1570
1100
1730
1990
1160
1270
1710
1330
1870
2140
1260
1450
2020
1550
2150
2400
860
920
1360
950
1500
1730
1010
1110
1490
1160
1630
1860
1090
1260
1750
1350
1870
2090
15
GUARANTEED RATINGS
FT5
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
829
875
1297
916
1431
1642
963
1050
1421
1102
1544
1766
1040
1199
1668
1287
1781
1987
733
774
1148
811
1266
1453
852
929
1257
975
1366
1562
920
1061
1475
1139
1576
1758
648
684
1015
717
1119
1284
753
821
1111
862
1208
1381
813
938
1304
1007
1393
1554
563
595
881
623
972
1116
654
714
965
749
1049
1200
707
815
1133
875
1210
1350
COPPER FINNED TUBING
1" DIA. COPPER
1C-2¾ X 4-32
1C-2¾ X 4-40
1C-2¾ X 4-48
1" DIA. COPPER
1C-3¼ X 3¼-32
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1" DIA. COPPER
1C-4¼ X 4¼-32
1C-4¼ X 4¼-40
1C-4¼ X 4¼-48
16
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.43
4.68
6.93
4.90
7.65
8.77
5.14
5.61
7.59
5.89
8.25
9.43
5.56
6.41
8.91
6.88
9.52
10.62
5.10
5.60
7.40
5.90
8.20
9.40
5.70
6.30
8.60
6.70
9.00
10.30
6.30
7.20
8.30
7.70
9.30
10.80
6.70
7.10
10.50
7.40
11.60
13.30
7.80
8.50
11.50
8.90
12.50
14.30
8.40
9.70
13.50
10.40
14.40
16.10
1063
1122
1663
1175
1835
2105
1234
1346
1822
1412
1980
2264
1333
1538
2138
1650
2284
2548
1220
1340
1780
1420
1970
2260
1370
1510
2060
1610
2160
2470
1510
1730
1990
1850
2230
2590
1610
1700
2520
1780
2780
3190
1870
2040
2760
2140
3000
3430
2020
2330
3240
2500
3460
3860
950
1050
1390
1110
1540
1760
1070
1180
1610
1260
1680
1930
1180
1350
1550
1440
1740
2020
1260
1330
1970
1390
2170
2490
1460
1590
2150
1670
2340
2680
1580
1820
2530
1950
2700
3010
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 13.
840
920
1230
980
1360
1560
950
1040
1420
1110
1490
1700
1040
1190
1370
1280
1540
1790
1110
1170
1740
1230
1920
2200
1290
1410
1900
1480
2070
2370
1390
1610
2240
1720
2390
2660
740
820
1090
870
1200
1380
840
920
1260
980
1320
1510
920
1060
1210
1130
1360
1580
980
1040
1540
1090
1700
1950
1140
1240
1680
1310
1830
2090
1230
1420
1980
1530
2110
2350
650
710
940
750
1040
1120
730
800
1090
850
1140
1310
800
920
1060
980
1180
1370
850
900
1340
940
1470
1690
990
1080
1460
1130
1590
1820
1070
1230
1720
1330
1830
2050
GUARANTEED RATINGS
FT5
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
1043
1109
1630
1155
1808
2072
1221
1333
1789
1393
1947
2231
1313
1505
2092
1617
2251
2501
813
865
1272
901
1411
1616
952
1040
1395
1086
1519
1740
1024
1174
1632
1261
1755
1951
720
765
1125
797
1248
1430
842
920
1234
961
1343
1539
906
1038
1444
1116
1553
1726
636
676
994
705
1103
1264
745
813
1091
849
1188
1361
801
918
1276
986
1373
1526
553
588
864
612
958
1098
647
707
948
738
1032
1182
696
798
1109
857
1193
1326
1580
1680
2470
1750
2740
3140
1850
2020
2710
2110
2950
3380
1990
2280
3170
2450
3410
3790
1230
1310
1930
1370
2140
2450
1440
1580
2110
1650
2300
2640
1550
1780
2470
1910
2660
2960
960
1020
1510
1070
1670
1920
1130
1230
1650
1290
1800
2060
1210
1390
1930
1490
2080
2310
840
890
1310
930
1450
1660
980
1070
1440
1120
1560
1790
1050
1210
1680
1300
1810
2010
COPPER FINNED TUBING
11⁄4" DIA. COPPER
1¼C-2¾ X 4-32
1¼C-2¾ X 4-40
1¼C-2¾ X 4-48
11⁄4" DIA. COPPER
1¼C-3¼ X 3¼-32
1¼C-3¼ X 3¼-40
1¼C-3¼ X 3¼-48
11⁄4" DIA. COPPER
1¼C-4¼ X 4¼-32
1¼C-4¼ X 4¼-40
1¼C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.35
4.62
6.79
4.81
7.54
8.64
5.09
5.56
7.45
5.80
8.11
9.30
5.47
6.27
8.72
6.74
9.38
10.42
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
6.60
7.00
10.30
7.30
11.40
13.10
7.70
8.40
11.30
8.80
12.30
14.10
8.30
9.50
13.20
10.20
14.20
15.80
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.00
5.50
7.30
5.80
8.10
9.30
5.60
6.10
8.40
6.40
8.80
10.10
6.20
7.10
8.10
7.50
9.10
10.50
1200
1320
1750
1390
1940
2230
1340
1460
2020
1540
2110
2420
1490
1700
1940
1800
2180
2520
940
1030
1370
1080
1510
1740
1050
1140
1580
1200
1650
1890
1160
1330
1510
1400
1700
1970
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 13.
830
910
1210
960
1340
1540
920
1010
1390
1060
1460
1670
1030
1170
1340
1240
1500
1740
1090
1160
1700
1210
1890
2170
1280
1390
1870
1460
2040
2330
1370
1570
2190
1690
2350
2620
730
810
1070
850
1180
1360
820
890
1230
940
1290
1480
910
1040
1180
1100
1330
1540
640
700
930
740
1030
1180
710
770
1070
820
1120
1280
790
900
1030
950
1160
1340
17
GUARANTEED RATINGS
FT3
LOW PROFILE
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
600
640
660
900
660
730
750
1010
750
800
840
1140
530
570
580
790
580
650
660
900
660
710
750
1010
470
500
510
700
510
570
590
790
590
630
660
890
410
430
450
610
450
500
510
680
510
540
570
770
800
860
920
1260
880
950
1010
1390
950
1050
1100
1500
710
760
810
1110
780
840
900
1230
840
920
980
1320
630
670
720
980
690
740
790
1090
740
820
870
1170
550
580
630
850
600
650
690
940
650
710
750
1020
STEEL FINNED TUBING
11⁄4" DIA. STEEL
1" DIA. STEEL
1S-3¼ X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
1¼S-3¼ X 3¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
3.20
3.40
3.50
4.80
3.50
3.90
4.00
5.40
4.00
4.30
4.50
6.10
3.10
3.30
3.40
4.70
3.40
3.80
3.90
5.30
3.90
4.20
4.40
6.00
770
820
840
1150
840
940
960
1300
960
1030
1080
1460
740
790
820
1130
820
910
940
1270
940
1010
1060
1440
580
620
640
880
640
710
730
990
730
790
830
1120
510
550
570
780
570
630
650
880
650
700
730
990
450
480
500
690
500
560
570
770
570
620
650
880
390
420
430
600
430
480
500
670
500
540
560
760
3
⁄4" DIA. COPPER
3
⁄4" DIA. COPPER
COPPER FINNED TUBING
¾C-2¾ X 4-32
¾C-2¾ X 4-40
¾C-2¾ X 4-48
¾C-3¼ X 3¼-32
¾C-3¼ X 3¼-40
¾C-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
4.30
4.60
4.90
6.70
4.70
5.10
5.40
7.40
5.10
5.60
5.90
8.00
4.10
4.40
4.70
6.40
4.50
4.90
5.20
7.10
5.00
5.40
5.70
7.80
1030
1100
1180
1610
1130
1220
1300
1780
1220
1340
1420
1920
980
1060
1130
1540
1080
1180
1250
1700
1200
1300
1370
1870
760
830
880
1200
840
920
980
1330
940
1010
1070
1460
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 13.
18
680
730
780
1060
750
810
860
1170
830
900
950
1290
600
650
690
940
660
720
760
1040
730
790
840
1140
520
560
600
820
570
630
660
900
640
690
730
990
GUARANTEED RATINGS
FT3
LOW PROFILE
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
620
660
700
960
680
730
770
1070
730
810
850
1160
540
570
610
840
590
640
670
930
640
700
740
1010
600
650
690
950
660
720
760
1060
720
790
840
1140
520
560
600
830
570
630
660
920
630
690
730
990
11⁄4" DIA. COPPER
11⁄4" DIA. COPPER
1" DIA. COPPER
1" DIA. COPPER
COPPER FINNED TUBING
1C-2¾ X 4-32
1C-2¾ X 4-40
1C-2¾ X 4-48
1C-3¼ X 3¼-32
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1¼C-23⁄4 X 4-32
1¼C-23⁄4 X 4-40
1¼C-23⁄4 X 4-48
1¼C-3¼ X 3¼-32
1¼C-3¼ X 3¼-40
1¼C-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
4.20
4.50
4.80
6.60
4.60
5.00
5.30
7.30
5.00
5.50
5.80
7.90
1010
1080
1150
1580
1110
1200
1270
1750
1200
1320
1390
1900
790
840
900
1230
870
940
990
1370
940
1030
1080
1480
700
750
790
1090
770
830
880
1210
830
910
960
1310
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
4.10
4.40
4.70
6.50
4.50
4.90
5.20
7.20
4.90
5.40
5.70
7.80
980
1060
1130
1560
1080
1180
1250
1730
1180
1300
1370
1870
760
830
880
1220
840
920
980
1350
920
1010
1070
1460
680
730
780
1080
750
810
860
1190
810
900
950
1290
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
4.00
4.30
4.60
6.30
4.40
4.80
5.10
7.00
4.90
5.30
5.60
7.70
3.50
3.80
4.00
5.50
4.40
4.70
5.00
6.90
4.80
5.20
5.50
7.50
960
1030
1100
1510
1060
1150
1220
1680
1180
1270
1340
1850
840
910
960
1320
1060
1130
1200
1660
1150
1250
1320
1800
750
800
860
1180
830
900
950
1310
920
990
1050
1440
660
710
750
1030
830
880
940
1290
900
980
1030
1400
660
710
760
1040
730
790
840
1160
810
880
920
1280
580
630
660
910
730
780
830
1150
790
860
910
1240
590
630
670
920
650
700
740
1020
720
770
820
1130
510
560
590
810
650
690
730
1010
700
760
810
1100
510
550
580
800
560
610
650
890
630
670
710
980
450
480
510
700
560
600
640
880
610
660
700
950
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 13.
19
FF5/FF3
ENCLOSURE
FRONT GRILLE
ENCLOSURES
BRACKET
APPLICATION:
Provide heat through front panel louvers
when installations require heated air to be
diffused away from exterior walls.
TINNERMAN
NUT
ENCLOSURE:
• 14 to 18-gauge primed, phosphatized
CRS.
• 1-foot to 8-foot lengths in 6-inch
increments.
• Powder coated finish in decorator colors
• available.
• Aluminum or stainless steel available.
ELEMENT:
• Steel or copper/aluminum.
• 1-foot to 12-foot lengths in 6-inch
•increments. (10-foot maximum length
• for steel.)
• Galvanized fins .032 inches thick,
• aluminum fins .016 inches thick.
FIN
ENCLOSURE
MOUNTING
CHANNEL DETAIL
POSITIVE LOCKING BOTTOM
MOUNTING CLIP DETAIL
Cutaway view of FF5 enclosure showing
4 1⁄4" x 4 1⁄4" fin configuration.
SECTION "X - X"
INTERNAL JOGGLE-JOINER
MOUNTING:
• Mounting channel
• Full back panel 20-gauge (18-gauge
available) galvannealed steel.
• Urethane gasket for air seal available.
HANGERS:
• Self-gauging, snap fit, expansion cradle •
• with positive-locking, bottom-mounting
• clip provides easy installation as well
• as security.
• 16-gauge galvannealed steel.
• Slide cradle will accommodate 13⁄4 -inch
•linear expansion for quiet operation.
JOINTS:
• Internal joggle joiners provide hairline
•joints without any external fasteners.
DAMPER:
• (Optional) Durable knob or security
• tamper proof available.
OPTIONAL LOUVERED INLETS:
• Horizontal bottom inlet louvers -FFHL
• Vertical louvered inlet-FFVL
*CENTERLINES ARE BASED ON 1" COPPER TUBE
*CENTERLINES ARE BASED ON 1" COPPER TUBE
DAMPER OPTION IS DEPENDENT ON ENCLOSURE SIZE & PIPING CONFIGURATIONS.
FF3
FF5
PIPE SIZE
STEEL
COPPER
FFHL5
20
FFVL5
FIN SIZE
A
B
⁄4", 1", 1 ⁄4" 2 ⁄4" X 4" 14"
N/A
1", 11⁄4" 3⁄4", 1", 11⁄4" 31⁄4" X 31⁄4" 20" 53⁄8"
1", 11⁄4", 2 3⁄4", 1", 11⁄4" 41⁄4" X 41⁄4" 24"
3
1
3
PIPE SIZE
STEEL
COPPER
N/A
1", 11⁄4"
FIN SIZE
A
B
8"
11" 315⁄16"
3
⁄4", 1", 11⁄4" 31⁄4" X 31⁄4" 14"
3
⁄4", 1", 11⁄4"
23⁄4" X 4"
GUARANTEED RATINGS
FF5
LOW PROFILE
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
Rows Of
Finned
Tube
(On 6-inch
Centers)
FINNED TUBE
MODEL
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
730
750
1140
790
1200
1390
830
880
1260
920
1310
1510
920
1030
1390
1070
1420
1630
650
660
1010
700
1060
1230
730
780
1110
810
1160
1340
810
910
1230
950
1260
1440
570
590
890
620
940
1090
650
690
980
720
1020
1180
720
810
1090
840
1110
1270
500
510
770
540
820
940
560
600
850
630
890
1030
630
700
940
730
960
1110
STEEL FINNED TUBING
1" DIA. STEEL
1S-3¼ X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
11⁄4" DIA. STEEL
1¼S-3¼ X 3¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
*EDR - Equivalent
Direct Radiation area
(for steam heat)
per active (finned)
lineal foot of tube.
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
3.90
4.00
6.10
4.20
6.40
7.40
4.40
4.70
6.70
4.90
7.00
8.10
4.90
5.50
7.40
5.70
7.60
8.70
3.80
3.90
6.00
4.10
6.30
7.30
4.30
4.60
6.60
4.80
6.90
8.00
4.80
5.40
7.30
5.60
7.50
8.60
940
960
1460
1010
1540
1780
1060
1130
1610
1180
1680
1940
1180
1320
1780
1370
1820
2090
900
940
1440
980
1510
1750
1030
1100
1580
1150
1660
1930
1150
1300
1750
1340
1800
2060
700
730
1120
760
1180
1370
800
860
1230
900
1290
1510
900
1010
1370
1050
1400
1610
620
650
990
680
1040
1210
710
760
1090
790
1150
1330
790
900
1210
920
1240
1420
550
570
880
600
920
1070
630
670
960
700
1010
1180
700
790
1070
820
1100
1260
480
500
760
520
800
930
550
580
840
610
880
1020
610
690
930
710
950
1090
IMPORTANT RATING INFORMATION Guaranteed ratings based on:
• Installation at height shown. (Lower heights are not recommended; for greater heights, refer to Table 1 on page 52.)
• Entering air temperature of 65°F. (For other temperatures, refer to Table 2 or Table 3 on page 52.)
• Steam at nominal 1 (actual 0.9) psig and 215°F. (For other conditions, refer to Table 2 on page 52.)
• Water average temperature (°F) shown and velocity of 3 fps or more. (For lower velocities, see Figure 1 on page 53.)
• The interrelationships of water velocities, flow rates, pressure drops, and temperature drops with respect to total Btu
requirements for various tube diameters appear in Figure 1 on page 53.
• Linear expansion of steel and copper finned tube with temperature is shown in Figure 4 on page 54.
21
GUARANTEED RATINGS
FF5
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STANDARD
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
840
870
1290
890
1350
1550
940
1010
1420
1040
1480
1700
1060
1170
1570
1200
1620
1870
730
750
1120
770
1170
1350
820
880
1230
900
1280
1470
920
1020
1360
1040
1410
1630
810
840
1260
870
1320
1530
910
980
1400
1010
1450
1700
1020
1150
1540
1170
1600
1830
700
730
1090
750
1140
1330
790
850
1210
880
1260
1470
890
1000
1340
1020
1390
1590
STEEL FINNED TUBING
1" DIA. STEEL
1S-4¼ X 4¼-32
1S-4¼ X 4¼-40
1S-4¼ X 4¼-48
11⁄4" DIA. STEEL
1¼S-4¼ X 4¼-32
1¼S-4¼ X 4¼-40
1¼S-4¼ X 4¼-48
1" DIA. STEEL
2S-4¼ X 4¼-32
2S-4¼ X 4¼-40
2S-4¼ X 4¼-48
22
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.70
5.90
8.80
6.10
9.20
10.60
6.40
6.90
9.70
7.10
10.10
11.60
7.20
8.00
10.70
8.20
11.10
12.80
1370
1420
2110
1460
2210
2540
1540
1660
2330
1700
2420
2780
1730
1920
2570
1970
2660
3070
1070
1110
1650
1140
1720
1980
1200
1290
1820
1330
1890
2170
1350
1500
2000
1540
2070
2390
950
980
1460
1010
1520
1750
1060
1150
1610
1170
1670
1920
1190
1320
1770
1360
1840
2120
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.50
5.70
8.60
5.90
9.00
10.40
6.20
6.70
9.50
6.90
9.90
11.40
7.00
7.80
10.50
8.00
10.90
12.50
1320
1370
2060
1420
2160
2500
1490
1610
2290
1660
2380
2780
1680
1880
2520
1920
2620
3000
1030
1070
1610
1110
1680
1950
1160
1260
1790
1290
1860
2170
1310
1470
1970
1500
2040
2340
910
950
1420
980
1490
1730
1030
1110
1580
1150
1640
1920
1160
1300
1740
1320
1810
2070
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.60
5.80
8.70
6.00
9.10
10.50
6.30
6.80
9.60
7.00
10.00
11.50
7.10
7.90
10.60
8.10
11.00
12.70
1340
1390
2090
1440
2180
2520
1510
1630
2300
1680
2400
2760
1700
1900
2540
1940
2640
3050
1050
1080
1630
1120
1700
1970
1180
1270
1790
1310
1870
2150
1330
1480
1980
1510
2060
2380
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 21.
920
960
1440
990
1500
1740
1040
1120
1590
1160
1660
1900
1170
1310
1750
1340
1820
2100
820
850
1270
880
1330
1540
920
990
1400
1020
1460
1680
1040
1160
1550
1180
1610
1860
710
740
1110
760
1160
1340
800
860
1220
890
1270
1460
900
1010
1350
1030
1400
1620
GUARANTEED RATINGS
FF5
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
COPPER FINNED TUBING
¾C-2¾ X 4 -40
3
⁄4" DIA. COPPER
¾C-2¾ X 4 -32
¾C-2¾ X 4 -48
¾C-3¼ X 3¼-40
3
⁄4" DIA. COPPER
¾C-3¼ X 3¼-32
¾C-3¼ X 3¼-48
¾C-4¼ X 4¼-40
3
⁄4" DIA. COPPER
¾C-4¼ X 4¼-32
¾C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.43
4.68
6.93
4.90
7.65
8.77
5.14
5.61
7.56
5.89
8.22
9.43
5.56
6.41
8.91
6.88
9.52
10.62
1063
1122
1663
1175
1835
2105
1234
1346
1815
1412
1973
2264
1333
1538
2138
1650
2284
2548
829
875
1297
916
1431
1642
963
1050
1416
1102
1539
1766
1040
1199
1668
1287
1781
1987
733
774
1148
811
1266
1453
852
929
1252
975
1362
1562
920
1061
1475
1139
1576
1758
648
684
1015
717
1119
1284
753
821
1107
862
1204
1381
813
938
1304
1007
1393
1554
563
595
881
623
972
1116
654
714
962
749
1046
1200
707
815
1133
875
1210
1350
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.10
5.60
7.40
5.90
8.20
9.40
5.70
6.30
7.70
6.70
8.60
9.90
6.20
7.10
8.10
7.60
9.00
10.40
1220
1340
1480
1420
1970
2260
1370
1510
1850
1610
2060
2380
1490
1700
1940
1820
2160
2500
950
1050
1150
1110
1540
1760
1070
1180
1440
1260
1610
1860
1160
1330
1510
1420
1680
1950
840
920
1020
980
1360
1560
950
1040
1280
1110
1420
1640
1030
1170
1340
1260
1490
1730
740
820
900
870
1200
1380
840
920
1130
980
1260
1450
910
1040
1180
1110
1320
1530
650
710
780
750
1040
1200
730
800
980
850
1090
1260
790
900
1030
960
1140
1330
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
6.70
7.10
10.50
7.40
11.60
13.30
7.80
8.50
11.50
8.90
12.50
14.30
8.40
9.70
13.50
10.40
14.40
16.10
1610
1700
2520
1780
2780
3190
1870
2040
2750
2140
2990
3430
2020
2330
3240
2500
3460
3860
1260
1330
1970
1390
2170
2490
1460
1590
2150
1670
2330
2680
1580
1820
2530
1950
2700
3010
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 21.
1110
1170
1740
1230
1920
2200
1290
1410
1900
1480
2060
2370
1390
1610
2240
1730
2390
2660
980
1040
1540
1090
1700
1950
1140
1240
1680
1310
1820
2090
1230
1420
1980
1530
2110
2350
850
900
1340
940
1470
1690
990
1080
1460
1130
1580
1820
1070
1230
1720
1330
1830
2050
23
FF5
GUARANTEED RATINGS
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
813
865
1272
901
1411
1616
952
1040
1395
1086
1519
1740
1024
1174
1632
1261
1755
1951
940
1030
1370
1080
1510
1740
1050
1160
1420
1230
1590
1830
1140
1310
1500
1400
1670
1910
720
765
1125
797
1248
1430
842
920
1234
961
1343
1539
906
1038
1444
1116
1553
1726
830
910
1210
960
1340
1540
920
1030
1260
1090
1410
1620
1010
1160
1320
1240
1480
1690
636
676
994
705
1103
1264
745
813
1091
849
1188
1361
801
918
1276
986
1373
1526
730
810
1070
850
1180
1360
820
910
1110
960
1240
1430
890
1020
1170
1100
1310
1490
553
588
864
612
958
1098
647
707
948
738
1032
1182
696
798
1109
857
1193
1326
640
700
930
740
1030
1180
710
790
960
840
1080
1250
770
890
1020
950
1130
1300
COPPER FINNED TUBING
1" DIA. COPPER
1C-2¾ X 4-32
1C-2¾ X 4-40
1C-2¾ X 4-48
1" DIA. COPPER
1C-3¼ X 3¼-32
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1" DIA. COPPER
1C-4¼ X 4¼ -32
1C-4¼ X 4¼-40
1C-4¼ X 4¼-48
24
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.35
4.62
6.79
4.81
7.54
8.64
5.09
5.56
7.45
5.80
8.11
9.30
5.47
6.27
8.72
6.74
9.38
10.42
5.00
5.50
7.30
5.80
8.10
9.30
5.60
6.20
7.60
6.60
8.50
9.80
6.10
7.00
8.00
7.50
8.90
10.20
6.60
7.00
10.30
7.30
11.40
13.10
7.70
8.40
11.30
8.80
12.30
14.10
8.30
9.50
13.20
10.20
14.20
15.80
1043
1109
1630
1155
1808
2072
1221
1333
1789
1393
1947
2231
1313
1505
2092
1617
2251
2501
1200
1320
1750
1390
1940
2230
1340
1490
1820
1580
2040
2350
1460
1680
1920
1800
2140
2450
1580
1680
2470
1750
2740
3140
1850
2020
2710
2110
2950
3380
1990
2280
3170
2450
3410
3790
1230
1310
1930
1370
2140
2450
1440
1580
2110
1650
2300
2640
1550
1780
2470
1910
2660
2960
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 21.
1090
1160
1700
1210
1890
2170
1280
1390
1870
1460
2040
2330
1370
1570
2190
1690
2350
2620
960
1020
1510
1070
1670
1920
1130
1230
1650
1290
1800
2060
1210
1390
1930
1490
2080
2310
840
890
1310
930
1450
1660
980
1070
1440
1120
1560
1790
1050
1210
1680
1300
1810
2010
GUARANTEED RATINGS
FF5
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
710
756
1102
788
1225
1398
829
897
1202
938
1312
1507
883
1016
1412
1093
1521
1694
628
668
974
696
1083
1236
733
793
1063
829
1159
1333
781
898
1248
966
1345
1498
546
581
847
605
941
1074
637
689
923
721
1007
1158
679
780
1084
840
1168
1301
1080
1150
1670
1190
1860
2120
1260
1360
1820
1420
1990
2280
1340
1540
2140
1660
2300
2570
950
1010
1480
1060
1640
1870
1110
1200
1610
1260
1760
2020
1180
1360
1890
1460
2040
2270
830
880
1280
920
1430
1630
960
1040
1400
1090
1530
1750
1030
1180
1640
1270
1770
1970
COPPER FINNED TUBING
11⁄4" DIA. COPPER
1¼C-2¾ X 4 -32
1¼C-2¾ X 4-40
1¼C-2¾ X 4-48
11⁄4" DIA. COPPER
1¼C-3¼ X 3¼-32
1¼C-3¼ X 3¼-40
1¼C-3¼ X 3¼-48
11⁄4" DIA. COPPER
1¼C-4¼ X 4¼-32
1¼C-4¼ X 4¼-40
1¼C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.29
4.57
6.66
4.76
7.40
8.44
5.01
5.42
7.26
5.67
7.92
9.10
5.34
6.13
8.53
6.60
9.19
10.23
1030
1096
1597
1142
1775
2026
1201
1300
1742
1360
1901
2185
1280
1472
2046
1584
2204
2455
803
855
1246
891
1385
1580
937
1014
1359
1060
1483
1704
999
1148
1596
1236
1719
1915
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
6.50
6.90
10.10
7.20
11.20
12.80
7.60
8.20
11.00
8.60
12.00
13.80
8.10
9.30
12.90
10.00
13.90
15.50
1560
1660
2420
1730
2690
3070
1820
1970
2640
2060
2880
3310
1940
2230
3100
2400
3340
3720
1220
1290
1890
1350
2100
2400
1420
1540
2060
1610
2250
2580
1510
1740
2420
1870
2610
2900
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.00
5.50
7.30
5.80
8.00
9.20
5.60
6.20
7.60
6.60
8.40
9.70
6.10
7.00
8.00
7.40
8.80
10.20
1200
1320
1750
1390
1920
2210
1340
1490
1820
1580
2020
2330
1460
1680
1920
1780
2110
2450
940
1030
1370
1080
1500
1720
1050
1160
1420
1230
1580
1820
1140
1310
1500
1390
1650
1910
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 21.
830
910
1210
960
1320
1520
920
1030
1260
1090
1390
1610
1010
1160
1320
1230
1460
1690
730
810
1070
850
1170
1350
870
910
1110
960
1230
1420
890
1020
1170
1090
1290
1490
640
700
930
740
1020
1170
710
790
960
840
1070
1230
770
890
1020
940
1120
1300
25
GUARANTEED RATINGS
FF3
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
LOW PROFILE
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
590
620
640
880
640
710
730
990
730
790
830
1120
520
550
570
780
570
630
650
880
650
700
730
990
460
480
500
690
500
560
570
770
570
620
650
880
400
420
430
600
430
480
500
670
500
540
560
760
790
840
900
1230
860
940
990
1370
940
1030
1080
1480
700
750
790
1090
760
830
880
1210
830
910
960
1310
620
660
700
960
670
730
770
1070
730
810
850
1160
540
570
610
840
580
640
670
930
640
700
740
1010
STEEL FINNED TUBING
11⁄4" DIA. STEEL
1" DIA. STEEL
1S-3¼ X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
1¼S-3¼ X 3¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
3.12
3.30
3.40
4.70
3.40
3.80
3.90
5.30
3.90
4.20
4.40
6.00
3.00
3.20
3.30
4.60
3.30
3.70
3.80
5.20
3.80
4.10
4.30
5.90
750
790
820
1130
820
910
940
1270
940
1010
1060
1440
720
770
790
1100
790
890
910
1250
910
980
1030
1420
560
600
620
860
620
690
710
980
710
760
800
1110
500
530
550
760
550
610
630
860
630
680
710
980
440
470
480
670
480
540
560
760
560
600
630
870
380
410
420
580
420
470
480
660
480
520
550
750
3
⁄4" DIA. COPPER
3
⁄4" DIA. COPPER
COPPER FINNED TUBING
¾C-2 ⁄4 X 4-32
3
¾C-2¾ X 4-40
¾C-2¾ X 4-48
¾C-3¼ X 3¼-32
¾C-3¼ X 3¼-40
¾C-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
4.20
4.50
4.80
6.60
4.60
5.00
5.30
7.30
5.00
5.50
5.80
7.90
4.10
4.40
4.70
6.40
4.50
4.90
5.10
7.00
5.00
5.30
5.60
7.60
1010
1080
1150
1580
1110
1200
1270
1750
1200
1320
1390
1900
980
1060
1130
1540
1080
1180
1220
1680
1200
1270
1340
1820
760
830
880
1200
840
920
950
1310
940
990
1050
1420
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 21.
26
680
730
780
1060
750
810
840
1160
830
880
920
1260
600
650
690
940
660
720
740
1020
730
770
820
1110
520
560
600
820
570
630
650
890
640
670
710
960
FF3
GUARANTEED RATINGS
LOW PROFILE
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
600
650
690
950
660
720
760
1060
720
790
840
1140
520
560
600
830
570
630
660
920
630
690
730
990
11⁄4" DIA. COPPER
1" DIA. COPPER
1" DIA. COPPER
1" DIA. COPPER
COPPER FINNED TUBING
1C-2¾ X 4-32
1C-2¾ X 4-40
1C-2¾ X 4-48
1C-3¼ X 3¼-32
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1¼C-2¾ X 4-32
1¼C-2¾ X 4-40
1¼C-2¾ X 4-48
1¼C-3¼ X 3¼-32
1¼C-3¼ X 3¼-40
1¼C-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
4.10
4.40
4.70
6.50
4.50
4.90
5.20
7.20
4.90
5.40
5.70
7.80
980
1060
1130
1560
1080
1180
1250
1730
1180
1300
1370
1870
760
830
880
1220
840
920
980
1350
920
1010
1070
1460
680
730
780
1080
750
810
860
1190
810
900
950
1290
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
4.00
4.30
4.60
6.40
4.40
4.80
5.10
7.10
4.80
5.30
5.60
7.70
960
1030
1110
1540
1060
1150
1220
1700
1150
1270
1340
1850
750
800
860
1200
830
900
950
1330
900
990
1050
1440
660
710
760
1060
730
790
840
1170
790
880
920
1280
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
4.00
4.30
4.60
6.30
4.40
4.80
5.00
6.90
4.90
5.20
5.50
7.50
3.50
3.80
4.00
5.50
4.40
4.70
5.00
6.90
4.80
5.10
5.40
7.40
960
1030
1100
1510
1060
1150
1200
1660
1180
1250
1320
1800
840
910
960
1320
1060
1130
1200
1660
1150
1220
1300
1780
750
800
860
1180
830
900
940
1290
920
980
1030
1400
660
710
750
1030
830
880
940
1290
900
950
1010
1390
660
710
760
1040
730
790
830
1150
810
860
910
1240
580
630
660
910
730
780
830
1150
790
840
900
1230
590
630
670
920
650
700
730
1010
720
760
810
1100
590
630
670
940
650
700
740
1040
700
770
820
1130
510
560
590
810
650
690
730
1010
700
740
790
1090
510
550
580
800
560
610
640
880
630
660
700
950
510
550
580
820
560
610
650
900
610
670
710
980
450
480
510
700
560
600
640
880
610
650
690
940
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 21.
27
FR5/FR3
ENCLOSURE
ROUNDED GRILLE
ENCLOSURES
BRACKET
APPLICATION:
When high heat output is demanded into
room and along exterior walls. Appealing
enclosure design allows heat to radiate
through louvers rounded along top and
front edge of cabinet.
TINNERMAN
NUT
ENCLOSURE:
• 14 to 18-gauge primed, phosphatized
CRS.
• 1-foot to 8-foot lengths in 6-inch
increments.
• Powder coated finish in decorator colors
• available.
• Aluminum or stainless steel available.
ELEMENT:
• Steel or copper/aluminum.
• 1-foot to 12-foot lengths in 6-inch
•increments. (10-foot maximum length
• for steel.)
• Galvanized fins .032 inches thick,
• aluminum fins .016 inches thick.
FIN
ENCLOSURE
MOUNTING
CHANNEL DETAIL
POSITIVE LOCKING BOTTOM
MOUNTING CLIP DETAIL
Cutaway view of FR5 enclosure showing
4 1⁄4" x 4 1⁄4" fin configuration.
SECTION "X - X"
INTERNAL JOGGLE-JOINER
MOUNTING:
• Mounting channel
• Full back panel 20-gauge (18-gauge
available) galvannealed steel.
• Urethane gasket for air seal available.
HANGERS:
• Self-gauging, snap fit, expansion cradle •
• with positive-locking, bottom-mounting
• clip provides easy installation as well
• as security.
• 16-gauge galvannealed steel.
• Slide cradle will accommodate 13⁄4 -inch
•linear expansion for quiet operation.
JOINTS:
• Internal joggle joiners provide hairline
•joints without any external fasteners.
DAMPER:
• (Optional) Durable knob or security
• tamper proof available.
OPTIONAL LOUVERED INLETS:
• Horizontal bottom inlet louvers -FRHL
• Vertical louvered inlet-FRVL
*CENTERLINES ARE BASED ON 1" COPPER TUBE
*CENTERLINES ARE BASED ON 1" COPPER TUBE
DAMPER OPTION IS DEPENDENT ON ENCLOSURE SIZE & PIPING CONFIGURATIONS.
FR5
PIPE SIZE
STEEL
COPPER
28
FRVL5
FIN SIZE
A
B
⁄4", 1", 11⁄4" 23⁄4" X 4" 14"
N/A
3
1
1", 1 ⁄4" ⁄4", 1", 11⁄4" 31⁄4" X 31⁄4" 20" 53⁄8"
1", 11⁄4", 2 3⁄4", 1", 11⁄4" 41⁄4" X 41⁄4" 24"
3
FRHL5
FR3
PIPE SIZE
STEEL
COPPER
N/A
1", 11⁄4"
FIN SIZE
A
B
3
⁄4", 1", 11⁄4" 23⁄4" X 4" 8" 15
11" 3 ⁄16"
3
⁄4", 1", 11⁄4" 31⁄4" X 31⁄4" 14"
FR5
GUARANTEED RATINGS
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
Rows Of
Finned
Tube
(On 6-inch
Centers)
FINNED TUBE
MODEL
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
770
790
1180
830
1230
1440
860
920
1290
950
1370
1580
950
1070
1440
1110
1500
1720
680
700
1040
730
1090
1280
760
810
1150
840
1210
1390
840
950
1280
980
1320
1520
600
620
920
650
960
1130
670
720
1010
740
1070
1230
740
840
1130
870
1170
1350
520
540
800
560
840
980
580
630
880
650
930
1070
650
730
980
750
1020
1170
STEEL FINNED TUBING
1" DIA. STEEL
1S-3¼X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
11⁄4" DIA. STEEL
1¼S-3¼ X 3¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
*EDR - Equivalent
Direct Radiation area
(for steam heat)
per active (finned)
lineal foot of tube.
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.10
4.20
6.30
4.40
6.60
7.70
4.60
4.90
6.90
5.10
7.30
8.40
5.10
5.70
7.70
5.90
8.00
9.20
4.00
4.10
6.20
4.30
6.50
7.50
4.50
4.80
6.80
5.00
7.10
8.20
5.00
5.60
7.50
5.80
7.80
9.00
980
1010
1510
1060
1580
1850
1100
1180
1660
1220
1750
2020
1220
1370
1850
1420
1920
2210
960
980
1490
1030
1560
1800
1080
1150
1630
1200
1700
1970
1200
1340
1800
1390
1870
2160
750
760
1160
800
1220
1400
840
900
1270
940
1330
1540
940
1050
1400
1080
1460
1680
660
680
1030
710
1080
1240
750
790
1120
830
1170
1360
830
920
1240
960
1290
1490
590
600
910
630
950
1100
660
700
990
730
1040
1200
730
820
1100
850
1140
1320
510
520
790
550
830
950
570
610
860
640
900
1040
640
710
950
740
990
1140
IMPORTANT RATING INFORMATION Guaranteed ratings based on:
• Installation at height shown. (Lower heights are not recommended; for greater heights, refer to Table 1 on page 52.)
• Entering air temperature of 65°F. (For other temperatures, refer to Table 2 or Table 3 on page 52.)
• Steam at nominal 1 (actual 0.9) psig and 215°F. (For other conditions, refer to Table 2 on page 52.)
• Water average temperature (°F) shown and velocity of 3 fps or more. (For lower velocities, see Figure 1 on page 53.)
• The interrelationships of water velocities, flow rates, pressure drops, and temperature drops with respect to total Btu
requirements for various tube diameters appear in Figure 1 on page 53.
• Linear expansion of steel and copper finned tube with temperature is shown in Figure 4 on page 54.
29
FR5
GUARANTEED RATINGS
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
980
1010
1520
1040
1590
1820
1090
1170
1670
1230
1740
1990
1240
1390
1840
1420
1900
2200
870
890
1350
920
1400
1610
960
1040
1480
1090
1540
1760
1100
1230
1620
1260
1680
1950
750
770
1170
800
1220
1400
840
900
1280
940
1340
1530
950
1070
1410
1090
1460
1690
850
880
1280
910
1330
1540
950
1010
1390
1060
1460
1680
1070
1160
1490
1230
1580
1820
740
760
1120
790
1160
1340
830
880
1210
920
1270
1460
930
1010
1300
1070
1370
1580
STEEL FINNED TUBING
1" DIA. STEEL
1S-4¼ X 4¼-32
1S-4¼ X 4¼-40
1S-4¼ X 4¼-48
11⁄4" DIA. STEEL
1¼S-4¼ X 4¼-32
1¼S-4¼ X 4¼-40
1¼S-4¼ X 4¼-48
2" DIA. STEEL
2S-4¼ X 4¼-32
2S-4¼ X 4¼-40
2S-4¼ X 4¼-48
30
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.90
6.10
9.20
6.30
9.60
11.00
6.60
7.10
10.10
7.40
10.50
12.00
7.50
8.40
11.10
8.60
11.50
13.30
1420
1460
2210
1510
2300
2640
1580
1700
2420
1780
2520
2880
1800
2020
2660
2060
2760
3190
1110
1140
1720
1180
1790
2060
1230
1330
1890
1390
1970
2250
1400
1580
2070
1610
2150
2490
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.80
6.00
8.80
6.20
9.10
10.50
6.50
6.90
9.50
7.20
10.00
11.50
7.30
7.90
10.20
8.40
10.80
12.40
1390
1440
2110
1490
2180
2520
1560
1660
2280
1730
2400
2760
1750
1900
2450
2020
2590
2980
1080
1120
1650
1160
1700
1970
1220
1290
1790
1350
1870
2150
1370
1480
1910
1580
2020
2320
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
5.80
6.00
9.00
6.20
9.40
10.80
6.50
7.00
9.90
7.20
10.30
11.80
7.30
8.20
10.90
8.40
11.30
13.00
1390
1440
2160
1490
2260
2590
1560
1680
2380
1730
2470
2830
1750
1970
2620
2020
2710
3120
1080
1120
1680
1160
1760
2020
1220
1310
1860
1350
1930
2210
1370
1540
2040
1580
2110
2430
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 29.
960
990
1490
1030
1560
1790
1080
1160
1640
1190
1700
1950
1210
1360
1810
1390
1870
2150
960
990
1460
1030
1500
1740
1080
1150
1570
1190
1660
1900
1210
1310
1690
1390
1790
2060
850
880
1320
910
1380
1580
950
1020
1450
1060
1510
1730
1070
1200
1600
1230
1660
1900
740
760
1140
790
1200
1370
830
890
1260
920
1310
1500
930
1040
1390
1070
1440
1650
FR5
GUARANTEED RATINGS
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
855
901
1349
952
1483
1704
1014
1102
1431
1148
1555
1781
1086
1236
1472
1333
1606
1843
756
797
1193
842
1312
1507
897
975
1266
1016
1375
1576
961
1093
1302
1179
1421
1630
668
705
1055
745
1159
1333
793
862
1119
898
1216
1393
849
966
1151
1043
1256
1441
581
612
916
647
1007
1158
689
749
972
780
1056
1210
738
840
1000
906
1091
1252
1150
1210
1810
1280
1990
2280
1360
1480
1920
1540
2080
2390
1460
1660
1970
1790
2150
2470
1010
1070
1600
1130
1760
2020
1200
1310
1700
1360
1840
2110
1290
1460
1740
1580
1900
2180
COPPER FINNED TUBING
¾C-2¾ X 4-40
3
⁄4" DIA. COPPER
¾C-2¾ X 4-32
¾C-2¾ X 4-48
¾C-3¼ X 3¼-40
3
⁄4" DIA. COPPER
¾C-3¼ X 3¼-32
¾C-3¼ X 3¼-48
¾C-4¼ X 4¼-40
3
⁄4" DIA. COPPER
¾C-4¼ X 4¼-32
¾C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.57
4.81
7.21
5.09
7.92
9.10
5.42
5.89
7.65
6.13
8.31
9.52
5.80
6.60
7.87
7.12
8.58
9.85
5.30
5.80
8.10
6.10
9.00
10.30
5.90
6.50
9.40
6.90
9.70
10.70
6.40
7.40
9.70
7.90
10.00
11.00
6.90
7.30
10.90
7.70
12.00
13.80
8.20
8.90
11.60
9.30
12.60
14.40
8.80
10.00
11.90
10.80
13.00
14.90
1096
1155
1729
1221
1901
2185
1300
1412
1835
1472
1993
2284
1393
1584
1888
1709
2059
2363
1270
1390
1940
1460
2160
2470
1420
1560
2260
1660
2330
2570
1540
1780
2330
1900
2400
2640
1660
1750
2620
1850
2880
3310
1970
2140
2780
2230
3020
3460
2110
2400
2860
2590
3120
3580
990
1080
1510
1140
1680
1930
1110
1220
1760
1290
1820
2000
1200
1390
1820
1480
1870
2060
1290
1370
2040
1440
2250
2580
1540
1670
2170
1740
2360
2700
1650
1870
2230
2020
2430
2790
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 29.
880
960
1340
1010
1490
1700
980
1080
1560
1150
1610
1770
1060
1230
1610
1310
1660
1820
770
850
1180
890
1320
1510
870
950
1380
1010
1420
1570
940
1090
1420
1160
1460
1610
670
740
1030
770
1140
1310
750
830
1200
880
1230
1360
820
940
1230
1010
1270
1400
880
930
1390
980
1530
1750
1040
1130
1470
1180
1600
1830
1120
1270
1520
1370
1650
1900
31
FR5
GUARANTEED RATINGS
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
COPPER FINNED TUBING
1" DIA. COPPER
1C-2¾ X 4 -32
1C-2¾ X 4 -40
1C-2¾ X 4 -48
1" DIA. COPPER
1C-3¼ X 3¼-32
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1" DIA. COPPER
1C-4¼ X 4¼-32
1C-4¼ X 4¼-40
1C-4¼ X 4¼-48
32
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.48
4.76
7.07
4.95
7.78
8.91
5.28
5.75
7.54
6.00
8.20
9.30
5.67
6.46
7.73
6.99
8.39
9.63
1076
1142
1696
1188
1868
2138
1267
1379
1808
1439
1967
2231
1360
1551
1855
1676
2013
2310
839
891
1323
927
1457
1668
988
1076
1411
1122
1534
1740
1060
1210
1447
1308
1570
1802
742
788
1170
820
1289
1475
874
952
1248
993
1357
1539
938
1070
1280
1157
1389
1594
656
696
1035
725
1139
1304
773
841
1103
878
1200
1361
829
946
1131
1023
1228
1409
570
605
899
630
990
1133
672
731
958
763
1042
1182
721
822
983
888
1067
1224
5.20
5.70
7.90
6.00
8.80
10.10
5.80
6.40
9.20
6.80
9.50
10.60
6.30
7.20
9.50
7.70
9.80
10.80
1250
1370
1900
1440
2110
2420
1390
1540
2210
1630
2280
2540
1510
1730
2280
1850
2350
2590
980
1070
1480
1120
1650
1890
1080
1200
1720
1270
1780
1980
1180
1350
1780
1440
1830
2020
860
950
1310
990
1460
1670
960
1060
1520
1120
1570
1750
1040
1190
1570
1280
1620
1790
760
840
1160
880
1290
1480
850
940
1350
990
1390
1550
920
1060
1390
1130
1430
1580
660
730
1010
760
1120
1280
740
820
1170
860
1210
1350
800
920
1210
980
1250
1370
6.80
7.20
10.70
7.50
11.80
13.50
8.00
8.70
11.40
9.10
12.40
14.10
8.60
9.80
11.70
10.60
12.70
14.60
1630
1730
2570
1800
2830
3240
1920
2090
2740
2180
2980
3380
2060
2350
2810
2540
3050
3500
1270
1350
2000
1400
2210
2530
1500
1630
2140
1700
2320
2640
1610
1830
2190
1980
2380
2730
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 29.
1120
1190
1770
1240
1950
2240
1320
1440
1890
1500
2060
2330
1420
1620
1940
1750
2100
2420
990
1060
1570
1100
1730
1980
1170
1270
1670
1330
1820
2060
1260
1430
1710
1550
1860
2140
860
920
1360
950
1500
1720
1020
1110
1450
1160
1580
1790
1090
1250
1490
1350
1620
1860
FR5
GUARANTEED RATINGS
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
829
875
1297
916
1431
1642
978
1060
1385
1112
1508
1719
1050
1199
1421
1287
1544
1781
733
774
1148
811
1266
1453
865
938
1225
984
1334
1521
929
1061
1257
1139
1366
1576
648
684
1015
717
1119
1284
765
829
1083
870
1180
1345
821
938
1111
1007
1208
1393
563
595
881
623
972
1116
665
721
941
756
1025
1168
714
815
965
875
1049
1210
1260
1330
1970
1390
2170
2490
1480
1610
2100
1680
2290
2610
1590
1820
2150
1950
2340
2700
1110
1170
1740
1230
1920
2200
1310
1420
1860
1490
2020
2300
1410
1610
1900
1720
2070
2390
980
1040
1540
1090
1700
1950
1160
1260
1640
1320
1790
2040
1240
1420
1680
1530
1830
2110
850
900
1340
940
1480
1690
1010
1090
1430
1140
1550
1770
1080
1230
1460
1330
1590
1830
COPPER FINNED TUBING
1¼" DIA. COPPER
1¼C-2¾ X 4-32
1¼C--2¾ X 4-40
1¼C--2¾ X 4-48
11⁄4" DIA. COPPER
1¼C-3¼ X 3¼-32
1¼C-3¼ X 3¼-40
1¼C-3¼ X 3¼-48
11⁄4" DIA. COPPER
1¼C-4¼ X 4¼-32
1¼C-4¼ X 4¼-40
1¼C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
14
20
20
24
24
24
14
20
20
24
24
24
14
20
20
24
24
24
18
24
24
28
28
28
18
24
24
28
28
28
18
24
24
28
28
28
4.43
4.68
6.93
4.90
7.65
8.77
5.23
5.67
7.40
5.94
8.06
9.19
5.61
6.41
7.59
6.88
8.25
9.52
4.80
5.50
7.70
5.80
8.60
9.90
5.70
6.20
9.00
6.50
9.30
10.40
6.10
7.10
9.30
7.60
9.60
10.70
6.70
7.10
10.50
7.40
11.60
13.30
7.90
8.60
11.20
9.00
12.20
13.90
8.50
9.70
11.50
10.40
12.50
14.40
1063
1122
1663
1175
1835
2105
1254
1360
1775
1426
1934
2204
1346
1538
1822
1650
1980
2284
1150
1320
1850
1390
2060
2380
1370
1490
2160
1560
2230
2500
1460
1700
2230
1820
2300
2570
1610
1700
2520
1780
2780
3190
1900
2060
2690
2160
2930
3340
2040
2330
2760
2500
3000
3460
900
1030
1440
1080
1610
1860
1070
1040
1680
1220
1740
1950
1140
1330
1740
1420
1790
2000
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 29.
790
910
1280
960
1420
1640
950
1030
1490
1080
1540
1720
1010
1170
1540
1260
1590
1770
700
810
1130
850
1260
1450
840
910
1320
950
1360
1530
890
1040
1360
1110
1400
1570
610
700
980
740
1090
1260
730
790
1140
830
1180
1330
770
900
1180
960
1220
1360
33
FR3
GUARANTEED RATINGS
LOW PROFILE
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
620
660
690
940
670
730
760
1050
760
830
860
1180
550
580
610
830
590
650
680
920
680
730
760
1040
480
510
540
730
520
570
600
820
600
650
670
920
420
450
470
640
460
500
520
710
520
560
580
800
830
880
940
1270
900
980
1030
1400
980
1070
1120
1540
730
780
830
1120
790
860
910
1240
860
950
990
1360
650
690
730
990
700
760
810
1100
760
840
880
1200
560
600
640
860
610
660
700
950
660
730
760
1040
STEEL FINNED TUBING
11⁄4" DIA. STEEL
1" DIA. STEEL
1S-3¼ X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
1¼S-3¼ X 3¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
3.30
3.50
3.70
5.00
3.60
3.90
4.10
5.60
4.10
4.40
4.60
6.30
3.20
3.40
3.60
4.90
3.50
3.80
4.00
5.50
4.00
4.30
4.50
6.20
790
840
890
1200
860
940
980
1340
980
1060
1100
1510
770
820
860
1180
840
910
960
1320
960
1030
1080
1490
600
640
670
920
660
710
750
1030
750
800
840
1160
530
570
590
810
580
630
660
910
660
710
750
1030
470
500
520
720
510
560
590
810
590
630
660
910
410
430
460
630
450
480
510
700
510
550
570
790
3
⁄4" DIA. COPPER
3
⁄4" DIA. COPPER
COPPER FINNED TUBING
¾C-2¾ X 4-32
¾C-2¾ X 4-40
¾C-2¾ X 4-48
¾C-3¼ X 3¼-32
¾C-3¼ X 3¼-40
¾C-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
4.40
4.70
5.00
6.80
4.80
5.20
5.50
7.50
5.20
5.70
6.00
8.20
4.20
4.50
4.70
6.40
4.50
4.90
5.20
7.10
5.00
5.40
5.70
7.90
1060
1130
1200
1630
1150
1250
1320
1800
1250
1370
1440
1970
1010
1080
1130
1540
1080
1180
1250
1700
1200
1300
1370
1900
790
840
880
1200
840
920
980
1330
940
1010
1070
1480
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 29.
34
700
750
780
1060
750
810
860
1170
830
900
950
1310
620
660
690
940
660
720
760
1040
730
790
840
1160
540
570
600
820
570
630
660
900
640
690
730
1010
FR3
GUARANTEED RATINGS
LOW PROFILE
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
630
670
720
980
690
740
790
1090
740
820
870
1180
550
580
630
850
600
650
690
940
650
710
750
1030
600
650
690
940
670
720
760
1040
730
790
840
1140
520
560
600
820
580
630
660
900
640
690
730
990
11⁄4" DIA. COPPER
11⁄4" DIA. COPPER
1" DIA. COPPER
1" DIA. COPPER
COPPER FINNED TUBING
1C-2¾ X 4-32
1C-2¾ X 4-40
1C-2¾ X 4-48
1C-3¼ X 3¼-32
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1¼C-2¾ X 4-32
1¼C-2¾ X 4-40
1¼C-2¾ X 4-48
1¼C-3¼ X 3¼-32
1¼C-3¼ X 3¼-40
1¼C-3¼ X 3¼-48
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
4.30
4.60
4.90
6.70
4.70
5.10
5.40
7.40
5.10
5.60
5.90
8.10
1030
1100
1180
1610
1130
1220
1300
1780
1220
1340
1420
1940
800
860
920
1260
880
950
1010
1390
950
1050
1110
1510
710
760
810
1110
780
840
900
1230
840
920
980
1340
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
4.10
4.40
4.70
6.40
4.60
4.90
5.20
7.10
5.00
5.40
5.70
7.80
980
1060
1130
1540
1100
1180
1250
1700
1200
1300
1370
1870
760
830
880
1200
860
920
980
1330
940
1010
1070
1460
680
730
780
1060
760
810
860
1170
830
900
950
1290
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
1
1
1
2
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
8
11
14
14
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
12
15
18
18
4.10
4.40
4.70
6.40
4.50
4.90
5.20
7.10
5.00
5.40
5.70
7.80
3.60
3.90
4.10
5.60
4.50
4.80
5.10
7.00
4.90
5.30
5.60
7.70
980
1060
1130
1540
1080
1180
1250
1700
1200
1300
1370
1870
860
940
980
1340
1800
1150
1220
1680
1180
1270
1340
1850
760
830
880
1200
840
920
980
1330
940
1010
1070
1460
670
730
760
1050
840
900
950
1310
920
990
1050
1440
680
730
780
1060
750
810
860
1170
830
900
950
1290
590
650
680
920
750
790
840
1160
810
880
920
1280
600
650
690
940
660
720
760
1040
730
790
840
1140
520
570
600
820
660
700
740
1020
720
770
820
1130
520
560
600
820
570
630
660
900
640
690
730
990
460
500
520
710
570
610
650
890
630
670
710
980
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 29.
35
FSOS
DOUBLE SLOPED
GRILLE ENCLOSURES
ENCLOSURE
SNAP MOUNTING
CHANNEL DETAIL
APPLICATION:
Double sloped panels provide required
heat output when higher wall mounting is
called for to restrict accessibility...such as
in swimming pool areas and gymnasiums.
ENCLOSURE
ENCLOSURE:
• 14 to 18-gauge primed, phosphatized
CRS.
• 1-foot to 8-foot lengths in 6-inch
increments.
• Powder coated finish in decorator colors
• available.
• Aluminum or stainless steel available.
ELEMENT:
• Steel or copper/aluminum.
• 1-foot to 12-foot lengths in 6-inch
•increments. (10-foot maximum length
• for steel.)
• Galvanized fins .032 inches thick,
• aluminum fins .016 inches thick.
FASTENERS
(BY OTHERS)
Cutaway view of FSOS enclosure showing
4 1⁄4" x 4 1⁄4" fin configuration.
SECTION "X - X"
"B"
INTERNAL JOGGLE-JOINER
DAMPER
OPTIONAL
MOUNTING:
• Mounting channel
• Full back panel 20-gauge (18-gauge
available) galvannealed steel.
• Urethane gasket for air seal available.
HANGERS:
• Wall mounted slip-in second row
• brackets.
• 16-gauge galvannealed steel.
• Slide cradle will accommodate 13⁄4 -inch
•linear expansion for quiet operation.
"B"
DAMPER
OPTIONAL
WALL
"A"
6"
JOINTS:
• Internal joggle joiners provide hairline
•joints without any external fasteners.
"A"
WALL
* 6-1/8"
DAMPER:
• (Optional) Durable knob or security
• tamper proof available.
* 6-5/8"
3-15/64"
3-47/64"
1-31/32"
2-17/32"
4" MIN.
4" MIN.
FLOOR
FLOOR
CENTERLINESARE
AREBASED
BASED ON
TUBE
**CENTERLINES
ON1"
1"COPPER
COPPER
TUBE
ARE BASED ON 1" COPPER TUBE
* CENTERLINES
*CENTERLINES
ARE BASED ON 1" COPPER TUBE
DAMPER OPTION IS DEPENDENT ON ENCLOSURE SIZE & PIPING CONFIGURATIONS.
FSOS3
FSOS5
PIPE SIZE
STEEL
COPPER
36
FIN SIZE
A
B
¾", 1", 1¼" 2¾" X 4"
N/A
18" 3
5⁄"
1", 1¼" ¾", 1", 1¼" 3¼" X 3¼"
24" 8
1", 1¼", 2 ¾", 1", 1¼" 4¼" X 4¼"
PIPE SIZE
STEEL
COPPER
N/A
1", 1¼"
¾", 1", 1¼"
FIN SIZE
2¾" X 4"
¾", 1", 1¼" 3¼" X 3¼"
A
B
14" 315⁄16"
FSOS5
STANDARD
GUARANTEED RATINGS
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
Rows Of
Finned
Tube
(On 6-inch
Centers)
FINNED TUBE
MODEL
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
1S-3¼ X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
1S-4¼ X 4¼-32
1S-4¼ X 4¼-40
11⁄4" DIA. STEEL
1¼S-3¼ X 3¼-32
11⁄4" DIA. STEEL
1S-4¼ X 4¼-48
1¼S-4¼ X 4¼-32
2" DIA. STEEL
1" DIA. STEEL
1" DIA. STEEL
STEEL FINNED TUBING
2S-4¼ X 4¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
1¼S-4¼ X 4¼-40
1¼S-4¼ X 4¼-48
2S-4¼ X 4¼-40
2S-4¼ X 4¼-48
*EDR - Equivalent
Direct Radiation area
(for steam heat)
per active (finned)
lineal foot of tube.
1
1
2
1
1
2
1
1
2
18
24
24
18
24
24
18
24
24
22
28
28
22
28
28
22
28
28
1
1
2
1
1
2
1
1
2
18
24
24
18
24
24
18
24
24
22
28
28
22
28
28
22
28
28
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
3.82
4.39
6.65
4.18
4.90
7.31
4.60
5.39
8.04
917
1053
1595
1004
1176
1755
1104
1293
1930
716
821
1244
783
917
1369
861
1009
1506
633
727
1100
693
811
1211
762
892
1332
560
642
973
612
717
1070
673
789
1177
486
558
845
532
623
930
585
685
1023
3.75
4.30
6.51
4.10
4.80
7.17
4.51
5.28
7.88
899
1032
1564
984
1153
1720
1082
1268
1892
702
805
1220
768
899
1342
844
989
1476
621
712
1079
679
795
1187
747
875
1306
549
630
954
600
703
1049
660
773
1154
477
547
829
522
611
912
574
672
1003
22
28
28
22
28
28
22
28
28
5.10
5.85
8.86
5.58
6.53
9.75
6.13
7.19
10.72
22
28
28
22
28
28
22
28
28
5.00
5.74
8.69
5.47
6.40
9.56
6.01
7.04
10.51
22
28
28
22
28
28
22
28
28
4.91
5.69
8.27
5.40
6.26
9.10
5.94
6.89
10.01
1223
1404
2126
1338
1568
2340
1472
1724
2574
1199
1377
2085
1312
1537
2294
1443
1691
2523
1179
1366
1986
1297
1503
2184
1426
1653
2402
954
1095
1659
1044
1223
1825
1148
1345
2007
935
1074
1626
1023
1199
1789
1126
1319
1968
919
1066
1549
1011
1172
1704
1113
1289
1874
844
969
1467
923
1082
1614
1016
1190
1776
827
950
1438
905
1061
1583
996
1167
1741
813
943
1370
895
1037
1507
984
1141
1658
746
856
1297
816
956
1427
898
1052
1570
732
840
1272
800
938
1399
880
1031
1539
719
833
1211
791
917
1332
870
1008
1465
648
744
1127
709
831
1240
780
914
1364
636
730
1105
695
815
1216
765
896
1337
625
724
1052
687
796
1158
756
876
1273
IMPORTANT RATING INFORMATION Guaranteed ratings based on:
• Installation at height shown. (Lower heights are not recommended; for greater heights, refer to Table 1 on page 52.)
• Entering air temperature of 65°F. (For other temperatures, refer to Table 2 or Table 3 on page 52.)
• Steam at nominal 1 (actual 0.9) psig and 215°F. (For other conditions, refer to Table 2 on page 52.)
• Water average temperature (°F) shown and velocity of 3 fps or more. (For lower velocities, see Figure 1 on page 53.)
• The interrelationships of water velocities, flow rates, pressure drops, and temperature drops with respect to total Btu
requirements for various tube diameters appear in Figure 1 on page 53.
• Linear expansion of steel and copper finned tube with temperature is shown in Figure 4 on page 54.
37
FSOS5
STANDARD
GUARANTEED RATINGS
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
1016
1076
1597
1201
1313
1709
1300
1472
1756
793
839
1246
937
1024
1333
1014
1148
1369
701
742
1102
829
906
1179
897
1016
1211
620
656
974
733
801
1043
793
898
1071
539
570
847
637
696
906
689
780
930
1540
1630
2420
1820
1990
2590
1970
2230
2660
1201
1271
1888
1420
1552
2020
1537
1739
2075
1063
1125
1670
1256
1373
1787
1359
1539
1835
939
994
1476
1110
1214
1580
1202
1360
1623
¾" DIA. COPPER
¾" DIA. COPPER
COPPER FINNED TUBING
¾C-2¾ X 4-32
¾C-2¾ X 4-40
¾C-2¾ X 4-48
¾C-3¼ X 3¼-32
¾C-3¼ X 3¼-40
¾" DIA. COPPER
1" DIA. COPPER
1C-2¾ X 4-32
1C-3¼ X 3¼-32
1" DIA. COPPER
¾C-4¼ X 4¼-32
1" DIA. COPPER
¾C-3¼ X 3¼-48
¾C-4¼ X 4¼-40
¾C-4¼ X 4¼-48
1C-2¾ X 4-40
1C-2¾ X 4-48
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1C-4¼ X 4¼-32
1C-4¼ X 4¼-40
1C-4¼ X 4¼-48
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
1
1
2
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
18
24
24
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
22
28
28
4.24
4.48
6.66
5.01
5.47
7.12
5.42
6.13
7.32
4.81
5.09
7.56
5.69
6.22
8.09
6.16
6.97
8.31
6.40
6.80
10.10
7.60
8.30
10.80
8.20
9.30
11.10
4.15
4.43
6.60
4.90
5.34
6.99
5.28
6.00
7.21
4.72
5.03
7.50
5.56
6.06
7.94
6.00
6.81
8.19
6.30
6.70
10.00
7.40
8.10
10.60
8.00
9.10
10.90
1155
1223
1815
1365
1493
1943
1478
1673
1995
997
1063
1584
1175
1280
1676
1267
1439
1729
1133
1208
1800
1335
1455
1905
1440
1635
1965
1510
1610
2400
1780
1940
2540
1920
2180
2620
901
954
1416
1065
1164
1515
1152
1305
1556
777
829
1236
916
999
1308
988
1122
1349
883
942
1404
1041
1135
1486
1123
1275
1533
1178
1256
1872
1388
1513
1981
1498
1700
2044
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
38 For important ratings information regarding above charts, see page 37.
797
844
1252
942
1030
1340
1019
1154
1377
688
733
1093
811
883
1157
874
993
1193
781
833
1242
921
1004
1314
994
1128
1356
1042
1111
1656
1228
1339
1753
1325
1504
1808
705
746
1107
833
910
1185
901
1020
1217
612
648
962
723
791
1030
783
886
1057
608
648
966
717
781
1023
773
878
1055
528
563
840
623
679
888
672
763
916
691
737
1098
814
888
1162
878
997
1199
921
982
1464
1086
1183
1549
1171
1330
1598
816
864
1283
965
1055
1373
1044
1182
1410
600
640
954
708
771
1010
763
867
1041
800
853
1272
943
1028
1346
1018
1155
1389
FSOS5
STANDARD
GUARANTEED RATINGS
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
521
553
822
612
672
875
665
756
899
1¼" DIA. COPPER 1¼" DIA. COPPER 1¼" DIA. COPPER
COPPER FINNED TUBING
1¼C-2¾ X 4-32
1¼C-2¾ X 4-40
1¼C-2¾ X 4-48
1¼-3¼ X 3¼-32
1¼-3¼ X 3¼-40
1¼-3¼ X 3¼-48
1¼-4¼ X 4¼-32
1¼-4¼ X 4¼-40
1¼-4¼ X 4¼-48
1
1
2
1
1
2
1
1
2
18
24
24
18
24
24
18
24
24
22
28
28
22
28
28
22
28
28
4.10
4.35
6.46
4.81
5.28
6.88
5.23
5.94
7.07
983
1043
1551
1155
1267
1650
1254
1426
1696
767
813
1210
901
988
1287
978
1112
1323
679
720
1070
797
874
1139
865
984
1170
600
636
946
705
773
1007
765
870
1035
1
1
2
1
1
2
1
1
2
18
24
24
18
24
24
18
24
24
22
28
28
22
28
28
22
28
28
6.20
6.60
9.80
7.20
8.00
10.40
7.90
9.00
10.70
1490
1580
2350
1750
1920
2500
1900
2160
2570
1162
1232
1833
1365
1498
1950
1482
1685
2005
1028
1090
1622
1208
1325
1725
1311
1490
1773
909
964
1434
1068
1171
1525
1159
1318
1568
1
1
2
1
1
2
1
1
2
18
24
24
18
24
24
18
24
24
22
28
28
22
28
28
22
28
28
4.66
4.94
7.34
5.47
6.00
7.81
5.94
6.75
8.03
1118
1185
1763
1313
1440
1875
1425
1620
1928
872
924
1375
1024
1123
1463
1112
1264
1503
771
818
1216
906
994
1294
983
1118
1330
682
723
1075
801
878
1144
869
988
1176
592
628
934
696
763
994
755
859
1022
790
837
1246
928
1018
1325
1007
1145
1362
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 37.
39
FSOS3
STANDARD
GUARANTEED RATINGS
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
1¼" DIA. STEEL
1" DIA. STEEL
STEEL FINNED TUBING
1S-3¼ X 3¼-32
1
14
18
3.44
826
644
570
504
438
1S-3¼ X 3¼-40
1
14
18
3.76
903
705
623
551
479
1S-3¼ X 3¼-48
1
14
18
4.14
994
775
686
606
527
1¼-3¼ X 3¼-32
1
14
18
3.37
809
631
559
494
429
1¼-3¼ X 3¼-40
1
14
18
3.69
886
691
611
540
469
1¼-3¼ X 3¼-48
1
14
18
4.06
974
760
672
594
516
1" DIA. COPPER
1" DIA. COPPER
¾" DIA. COPPER
¾" DIA. COPPER
COPPER FINNED TUBING
40
¾C-2¾ X 4-32
1
14
18
3.52
844
658
582
515
447
¾C-2¾ X 4-40
1
14
18
4.15
997
778
688
608
528
¾C-2¾ X 4-48
1
14
18
4.50
1079
842
745
658
572
¾C-3¼ X 3¼-32
1
14
18
3.99
959
748
661
585
508
¾C-3¼ X 3¼-40
1
14
18
4.72
1133
884
782
691
600
¾C-3¼ X 3¼-48
1
14
18
5.11
1226
957
846
748
650
1C-2¾ X 4-32
1
14
18
3.45
827
645
571
642
433
1C-2¾ X 4-40
1
14
18
4.06
975
761
673
498
508
1C-2¾ X 4-48
1
14
18
4.38
1052
820
726
585
552
1C-3¼ X 3¼-32
1
14
18
3.73
895
698
617
546
474
1C-3¼ X 3¼-40
1
14
18
4.62
1108
864
765
676
587
1C-3¼ X 3¼-48
1
14
18
4.74
1138
887
785
694
603
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 37.
GUARANTEED RATINGS
FSOS3
STANDARD
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
1¼" DIA. COPPER 1¼" DIA. COPPER
COPPER FINNED TUBING
1¼C-2¾ X 4-32
1
14
18
3.40
816
637
563
498
433
1¼C-2¾ X 4-40
1
14
18
3.99
959
748
661
585
508
1¼C-2¾ X 4-48
1
14
18
4.34
1041
812
718
635
552
1¼C-3¼ X 3¼-32
1
14
18
3.86
928
723
640
566
492
1¼C-3¼ X 3¼-40
1
14
18
4.54
1089
850
752
665
577
1¼C-3¼ X 3¼-48
1
14
18
4.93
1183
923
816
721
627
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 37.
41
S-SL
ENCLOSURE
SECURITY SLOPED
GRILLE ENCLOSURES
APPLICATION:
Meet interior design specifications requiring consistent and even heat through
conventional louvers and when security of
enclosure is imperative.
FASTENERS
(BY OTHERS)
ENCLOSURE:
• 14 to 18-gauge primed, phosphatized
CRS.
• 1-foot to 8-foot lengths in 6-inch
increments.
• Powder coated finish in decorator colors
• available.
• Stainless steel available.
OFFSET MOUNTING
CHANNEL DETAIL
ELEMENT:
• Steel or copper/aluminum.
• 1-foot to 12-foot lengths in 6-inch
•increments. (10-foot maximum length
• for steel.)
• Galvanized fins .032 inches thick,
• aluminum fins .016 inches thick.
MOUNTING:
• Mounting channel
• Offset full back panel 20-gauge
(18-gauge available) galvannealed steel.
• Urethane gasket for air seal available.
ENCLOSURE
Cutaway view of S-SL enclosure
showing 4 1⁄4" x 4 1⁄4" fin configuration.
TAMPER PROOF
FASTENERS
(BY OTHERS)
"B"
HANGERS:
• Wall mounted slip-in 2nd row brackets.
• 16-gauge galvannealed steel.
• Slide cradle will accommodate 13⁄4 -inch
•linear expansion for quiet operation.
DAMPER
OPTIONAL
BOTTOM FLANGE
JOINTS:
• Internal joggle joiners provide hairline
•joints without any external fasteners.
DAMPER:
• (Optional) Durable knob or security
• tamper proof available.
6"
"A"
WALL
SECTION "X - X"
INTERNAL JOGGLE-JOINER
6"
* 3-3/4"
55/64"
S-SL
4" MIN.
2-17/32"
FLOOR
CENTERLINES ARE
ARE BASED
COPPER
TUBE
**CENTERLINES
BASEDON
ON1"1"
COPPER
TUBE
42
DAMPER OPTION IS DEPENDENT ON ENCLOSURE SIZE &
PIPING CONFIGURATIONS.
PIPE SIZE
STEEL
COPPER
FIN SIZE
A
B
1", 1¼" ¾", 1", 1¼" 3¼" X 3¼" 12"
¾", 1", 1¼" 2¾" X 4" 18" 53⁄8"
N/A
1", 1¼", 2 ¾", 1", 1¼" 4¼" X 4¼" 24"
S-SL
STANDARD
GUARANTEED RATINGS
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
STEEL FINNED TUBING
1" DIA. STEEL
1S-3¼ X 3¼-32
1S-3¼ X 3¼-40
1S-3¼ X 3¼-48
1" DIA. STEEL
1S-4¼ X 4¼-32
1S-4¼ X 4¼-40
1S-4¼ X 4¼-48
1¼" DIA. STEEL
1¼S-3¼ X 3¼-32
1¼S-3¼ X 3¼-40
1¼S-3¼ X 3¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
3.63
3.77
5.67
3.96
6.00
6.93
4.02
4.35
6.22
4.62
6.60
7.54
4.62
5.14
6.79
5.42
7.21
8.31
5.50
5.71
8.58
6.00
9.08
10.50
6.08
6.58
9.42
7.00
10.00
11.42
7.00
7.79
10.29
8.21
10.92
12.58
871
904
1360
950
1439
1663
964
1043
1492
1109
1584
1808
1109
1234
1630
1300
1729
1993
680
705
1060
741
1122
1297
752
813
1163
865
1236
1411
865
963
1272
1014
1349
1555
601
624
938
656
993
1148
665
720
1029
765
1093
1248
765
852
1125
897
1193
1375
531
552
829
580
878
1015
588
636
910
676
966
1103
676
753
994
793
1055
1216
462
479
721
504
763
881
511
553
791
588
840
958
588
654
864
689
916
1056
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
3.71
3.79
5.79
4.08
6.21
7.08
4.21
4.50
6.29
4.79
6.79
7.79
4.71
5.21
7.00
5.50
7.42
8.58
890
910
1390
980
1490
1700
1010
1080
1510
1150
1630
1870
1130
1250
1680
1320
1780
2060
694
710
1084
764
1162
1326
788
842
1178
897
1271
1459
881
975
1310
1030
1388
1607
614
628
959
676
1028
1173
697
745
1042
794
1125
1290
780
863
1159
911
1228
1421
543
555
848
598
909
1037
616
659
921
702
994
1141
689
763
1025
805
1086
1257
472
482
737
519
790
901
535
572
800
610
864
991
599
663
890
700
943
1092
1320
1370
2060
1440
2180
2520
1460
1580
2260
1680
2400
2740
1680
1870
2470
1970
2620
3020
1030
1069
1607
1123
1700
1966
1139
1232
1763
1310
1872
2137
1310
1459
1927
1537
2044
2356
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 37.
911
945
1421
994
1504
1739
1007
1090
1559
1159
1656
1891
1159
1290
1704
1359
1808
2084
805
836
1257
878
1330
1537
891
964
1379
1025
1464
1671
1025
1141
1507
1202
1598
1842
700
726
1092
763
1155
1336
774
837
1198
890
1272
1452
890
991
1309
1044
1389
1601
43
S-SL
STANDARD
GUARANTEED RATINGS
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
1300
1340
2020
1420
2140
2470
1460
1560
2210
1630
2350
2690
1630
1820
2420
1920
2570
2980
1014
1045
1576
1108
1669
1927
1139
1217
1724
1271
1833
2098
1271
1420
1888
1498
2005
2324
897
925
1394
980
1477
1704
1007
1076
1525
1125
1622
1856
1125
1256
1670
1325
1773
2056
793
817
1232
866
1305
1507
891
952
1348
994
1434
1641
994
1110
1476
1171
1568
1818
689
710
1071
753
1134
1309
774
827
1171
864
1246
1426
864
965
1283
1018
1362
1579
1281
1320
1990
1399
2108
2433
1438
1537
2177
1606
2315
2650
1606
1793
2384
1891
2531
2935
999
1030
1552
1091
1644
1898
1122
1199
1698
1252
1806
2067
1252
1398
1859
1475
1975
2290
884
911
1373
965
1454
1679
992
1060
1502
1108
1597
1828
1108
1237
1645
1305
1747
2025
781
805
1214
853
1286
1484
877
937
1328
979
1412
1616
979
1094
1454
1154
1544
1791
679
700
1055
741
1117
1289
762
814
1154
851
1227
1404
851
950
1263
1002
1342
1556
STEEL FINNED TUBING
1¼" DIA. STEEL
1¼S-4¼ X 4¼-32
1¼S-4¼ X 4¼-40
1¼S-4¼ X 4¼-48
2" DIA. STEEL
2S-4¼ X 4¼-32
2S-4¼ X 4¼-40
2S-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
5.42
5.58
8.42
5.92
8.92
10.29
6.08
6.50
9.21
6.79
9.79
11.21
6.79
7.58
10.08
8.00
10.71
12.42
5.34
5.50
8.29
5.83
8.78
10.14
5.99
6.40
9.07
6.69
9.64
11.04
6.69
7.47
9.93
7.88
10.55
12.23
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 37.
44
S-SL
STANDARD
GUARANTEED RATINGS
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
539
570
847
612
958
1098
637
696
906
738
1007
1151
689
780
930
864
1042
1193
COPPER FINNED TUBING
¾" DIA. COPPER
¾C-2¾ X 4-32
¾C-2¾ X 4-40
¾C-2¾ X 4-48
¾" DIA. COPPER
¾C-3¼ X 3¼-32
¾C-3¼ X 3¼-40
¾C-3¼ X 3¼-48
¾" DIA. COPPER
¾C-4¼ X 4¼-32
¾C-4¼ X 4¼-40
¾C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
4.24
4.48
6.66
4.81
7.54
8.64
5.01
5.47
7.12
5.80
7.92
9.05
5.42
6.13
7.32
6.79
8.20
9.38
1016
1076
1597
1155
1808
2072
1201
1313
1709
1393
1901
2171
1300
1472
1756
1630
1967
2251
793
839
1246
901
1411
1616
937
1024
1333
1086
1483
1694
1014
1148
1369
1272
1534
1755
701
742
1102
797
1248
1430
829
906
1179
961
1312
1498
897
1016
1211
1125
1357
1553
620
656
974
705
1103
1264
733
801
1043
849
1159
1325
793
898
1071
994
1200
1373
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
4.92
5.42
7.50
5.79
8.58
9.79
5.50
6.08
8.79
6.58
9.21
10.21
6.00
6.92
9.00
7.50
9.50
10.50
1180
1300
1800
1390
2060
2350
1320
1460
2110
1580
2210
2450
1440
1660
2160
1800
2280
2520
920
1014
1404
1084
1607
1833
1030
1139
1646
1232
1724
1911
1123
1295
1685
1404
1778
1966
814
897
1242
959
1421
1622
911
1007
1456
1090
1525
1691
994
1145
1490
1242
1573
1739
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
6.42
6.79
10.08
7.29
11.42
13.08
7.58
8.29
10.79
8.79
12.00
13.71
8.21
9.29
11.08
10.29
12.42
14.21
1540
1630
2420
1750
2740
3140
1820
1990
2590
2110
2880
3290
1970
2230
2660
2470
2980
3410
1201
1271
1888
1365
2137
2449
1420
1552
2020
1646
2246
2566
1537
1739
2075
1927
2324
2660
1063
1125
1670
1208
1891
2167
1256
1373
1787
1456
1987
2270
1359
1539
1835
1704
2056
2353
720
793
1098
848
1257
1434
805
891
1287
964
1348
1495
878
1013
1318
1098
1391
1537
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 37.
939
994
1476
1068
1671
1915
1110
1214
1580
1287
1757
2007
1202
1360
1623
1507
1818
2080
625
689
954
737
1092
1246
700
774
1118
837
1171
1299
763
880
1145
954
1208
1336
816
864
1283
928
1452
1664
965
1055
1373
1118
1526
1744
1044
1182
1410
1309
1579
1807
45
S-SL
STANDARD
GUARANTEED RATINGS
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
528
563
840
595
941
1074
623
679
888
731
990
1126
672
763
916
847
1014
1168
COPPER FINNED TUBING
1" DIA. COPPER
1C-2¾ X 4-32
1C-2¾ X 4-40
1C-2¾ X 4-48
1" DIA. COPPER
1C-3¼ X 3¼-32
1C-3¼ X 3¼-40
1C-3¼ X 3¼-48
1" DIA. COPPER
1C-4¼ X 4¼-32
1C-4¼ X 4¼-40
1C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
4.15
4.43
6.60
4.68
7.40
8.44
4.90
5.34
6.99
5.75
7.78
8.86
5.28
6.00
7.21
6.66
7.98
9.19
997
1063
1584
1122
1775
2026
1175
1280
1676
1379
1868
2125
1267
1439
1729
1597
1914
2204
777
829
1236
875
1385
1580
916
999
1308
1076
1457
1658
988
1122
1349
1246
1493
1719
688
733
1093
774
1225
1398
811
883
1157
952
1289
1466
874
993
1193
1102
1321
1521
608
648
966
684
1083
1236
717
781
1023
841
1139
1296
773
878
1055
974
1168
1345
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
4.79
5.29
7.42
5.71
8.42
9.58
5.42
6.00
8.58
6.50
9.00
10.08
5.92
6.71
8.79
7.29
9.29
10.29
1150
1270
1780
1370
2020
2300
1300
1440
2060
1560
2160
2420
1420
1610
2110
1750
2230
2470
897
991
1388
1069
1576
1794
1014
1123
1607
1217
1685
1888
1108
1256
1646
1365
1739
1927
794
876
1228
945
1394
1587
897
994
1421
1076
1490
1670
980
1111
1456
1208
1539
1704
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
6.29
6.71
10.00
7.08
11.21
12.79
7.42
8.08
10.58
8.71
11.79
13.42
8.00
9.08
10.92
10.08
12.08
13.92
1510
1610
2400
1700
2690
3070
1780
1940
2540
2090
2830
3220
1920
2180
2620
2420
2900
3340
1178
1256
1872
1326
2098
2395
1388
1513
1981
1630
2207
2512
1498
1700
2044
1888
2262
2605
1042
1111
1656
1173
1856
2118
1228
1339
1753
1442
1953
2222
1325
1504
1808
1670
2001
2305
702
775
1086
836
1232
1403
793
878
1257
952
1318
1476
866
982
1287
1068
1360
1507
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
46 For important ratings information regarding above charts, see page 37.
921
982
1464
1037
1641
1873
1086
1183
1549
1275
1726
1964
1171
1330
1598
1476
1769
2037
610
673
943
726
1071
1219
689
763
1092
827
1145
1283
753
853
1118
928
1182
1309
800
853
1272
901
1426
1627
943
1028
1346
1108
1500
1707
1018
1155
1389
1283
1537
1770
S-SL
STANDARD
GUARANTEED RATINGS
In btu/hr per active (finned) lineal foot of tube at entering air temperature of 65° F
FINNED TUBE
MODEL
Rows Of
Finned
Tube
(On 6-inch
Centers)
Enclosure
Height
(in inches)
Recommended
Minimum
Installed
Height
(in inches)
EDR*
(ft2⁄ ft)
STEAM
HEAT
215°
Factor
of 1.00
HOT WATER HEAT
190°
Factor
of 0.78
180°
Factor
of 0.69
170°
Factor
of 0.61
160°
Factor
of 0.53
521
553
822
588
923
1056
612
672
875
721
972
1109
665
756
899
833
1000
1151
COPPER FINNED TUBING
1¼" DIA. COPPER
1¼C-2¾ X 4-32
1¼C-2¾ X 4-40
1¼C-2¾ X 4-48
1¼" DIA. COPPER
1¼C-3¼ X 3¼-32
1¼C-3¼ X 3¼-40
1¼C-3¼ X 3¼-48
1¼" DIA. COPPER
1¼C-4¼ X 4¼-32
1¼C-4¼ X 4¼-40
1¼C-4¼ X 4¼-48
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
4.10
4.35
6.46
4.62
7.26
8.31
4.81
5.28
6.88
5.67
7.65
8.72
5.23
5.94
7.07
6.55
7.87
9.05
983
1043
1551
1109
1742
1993
1155
1267
1650
1360
1835
2092
1254
1426
1696
1571
1888
2171
767
813
1210
865
1359
1555
901
988
1287
1060
1431
1632
978
1112
1323
1225
1472
1694
679
720
1070
765
1202
1375
797
874
1139
938
1266
1444
865
984
1170
1084
1302
1498
600
636
946
676
1063
1216
705
773
1007
829
1119
1276
765
870
1035
958
1151
1325
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
4.50
5.08
7.21
5.50
8.21
9.42
5.29
5.79
8.42
6.21
8.79
9.92
5.71
6.58
8.71
7.21
9.08
10.21
1080
1220
1730
1320
1970
2260
1270
1390
2020
1490
2110
2380
1370
1580
2090
1730
2180
2450
842
952
1349
1030
1537
1763
991
1084
1576
1162
1646
1856
1069
1232
1630
1349
1700
1911
745
842
1194
911
1359
1559
876
959
1394
1028
1456
1642
945
1090
1442
1194
1504
1691
1
1
2
1
2
3
1
1
2
1
2
3
1
1
2
1
2
3
12
18
18
24
24
24
12
18
18
24
24
24
12
18
18
24
24
24
16
22
22
28
28
28
16
22
22
28
28
28
16
22
22
28
28
28
6.21
6.58
9.79
7.00
11.00
12.58
7.29
8.00
10.42
8.58
11.58
13.21
7.92
9.00
10.71
9.92
11.92
13.71
1490
1580
2350
1680
2640
3020
1750
1920
2500
2060
2780
3170
1900
2160
2570
2380
2860
3290
1162
1232
1833
1310
2059
2356
1365
1498
1950
1607
2168
2473
1482
1685
2005
1856
2231
2566
1028
1090
1622
1159
1822
2084
1208
1325
1725
1421
1918
2187
1311
1490
1773
1642
1973
2270
659
744
1055
805
1202
1379
775
848
1232
909
1287
1452
836
964
1275
1055
1330
1495
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) lineal foot of tube.
For important ratings information regarding above charts, see page 37.
909
964
1434
1025
1610
1842
1068
1171
1525
1257
1696
1934
1159
1318
1568
1452
1745
2007
572
647
917
700
1044
1198
673
737
1071
790
1118
1261
726
837
1108
917
1155
1299
790
837
1246
890
1399
1601
928
1018
1325
1092
1473
1680
1007
1145
1362
1261
1516
1744
47
Accessories
3-1/2"
FS5/FS3
8' -
*-
AX.
12"
*-
0" M
ENCLOSURES ARE AVAILABLE IN
1 FT. TO 8 FT. LENGTHS IN 6 IN. INCREMENTS
3-1/2"
3-1/2"
SECTION "X - X"
X
SECTION "X - X"
X
INTERNAL
INTERNALJOGGLE-JOINER
JOGGLE-JOINER
ACCESS DOOR
ALSO AVAILABLE
IN ENCLOSURE
ENCLOSURE
HEIGHT
2"
ENCLOSURE
EXPANSION BRACKET
MOUNTING
CHANNEL
3-1/2"
FULL
BACK PANEL
SLIP-IN
PIPE HANGER
SLIP-IN SECOND
ROW BRACKET
3-1/2"
12" WIDE ACCESS
PANEL (REMOVABLE)
SECURITY DAMPER
KNOB DAMPER
12"
12"
3-1/2"
-
*
*DOOR
6" x 6"
DOOR
6" x 6"
FOR
* 7 1/2"
FS3
9" FOR
FS5
WALL TRIM
SUPPORT
END CAP
(LEFT HAND SHOWN)
TRIM STRIP
3-1/2" - 5" - 7-1/2"
INSIDE CORNER
OUTSIDE CORNER
12" WIDE ENCLOSURE
WITH ACCESS DOOR
(SECURITY LOCK OPT.)
12" WIDE END CAP
WITH ACCESS DOOR
(SECURITY LOCK OPT.)
(ALL ACCESSORIES ARE OVERLAP TYPE, BUTT TYPE OPTIONAL)
(ALL ACCESSORIES ARE OVERLAP TYPE, BUTT-TYPE OPTIONAL.)
3-1/2"
FSOS
-
8'
AX.
*
*
M
- 0"
ENCLOSURES ARE AVAILABLE IN
1 FT. TO 8 FT. LENGTHS IN 6 IN. INCREMENTS
12"
-
3-1/2"
3-1/2"
SECTION "X - X"
X
X
INTERNAL JOGGLE-JOINER
SECTION "X - X"
INTERNAL JOGGLE-JOINER
ACCESS DOOR
ALSO AVAILABLE
IN ENCLOSURE
ENCLOSURE
HEIGHT
2"
MOUNTING
CHANNEL
SLIP-IN SECOND
ROW BRACKET
3-1/2"
3-1/2"
WALL
PIPE HANGER
FULL
BACK PANEL
3-1/2"
*
*
END CAP
(LEFT HAND SHOWN)
TRIM STRIP
3-1/2" - 5" - 7-1/2"
OUTSIDE CORNER
(ALL ACCESSORIES
OVERLAP
TYPE, BUTT TYPE OPTIONAL.)
(ALL ACCESSORIES ARE OVERLAP TYPE,
BUTTARE
TYPE
OPTIONAL)
48
SECURITY DAMPER
12"
-
WALL TRIM
SUPPORT
KNOB DAMPER
12"
*
-
INSIDE CORNER
DOOR
6" x 6"
DOOR
6" x 6"
7 1/2" FOR
FSOS3
9" FOR
FSOS5
12" WIDE ENCLOSURE
WITH ACCESS DOOR
(SECURITY LOCK OPT.)
12" WIDE END CAP
WITH ACCESS DOOR
(SECURITY LOCK OPT.)
Accessories
3-1/2"
ENCLOSURES ARE AVAILABLE IN
1 FT. TO 8 FT. LENGTHS IN 6 IN. INCREMENTS
8' -
FT5/FT3
*-
AX.
12"
*-
0" M
3-1/2"
3-1/2"
X
X
ACCESS DOOR
ALSO AVAILABLE
IN ENCLOSURE
SECTION "X - X"
INTERNAL JOGGLE-JOINER
SECTION "X - X"
INTERNAL JOGGLE-JOINER
8' -
FF5/FF3
*-
AX.
3-1/2"
12"
*-
0" M
3-1/2"
3-1/2"
X
X
ACCESS DOOR
ALSO AVAILABLE
IN ENCLOSURE
SECTION "X -SECTION
X" "X - X"
INTERNAL JOGGLE-JOINER
INTERNAL JOGGLE-JOINER
8' -
*-
AX.
3-1/2"
12"
*-
0" M
3-1/2"
3-1/2"
FR5/FR3
X
X
ACCESS DOOR
ALSO AVAILABLE
IN ENCLOSURE
SECTION "X -SECTION
X" "X - X"
INTERNAL JOGGLE-JOINER
INTERNAL JOGGLE-JOINER
ENCLOSURE
HEIGHT
2"
MOUNTING
CHANNEL
ENCLOSURE
EXPANSION BRACKET
SLIP-IN
PIPE HANGER
SLIP-IN SECOND
ROW BRACKET
3-1/2"
3-1/2"
FULL
BACK PANEL
SECURITY DAMPER
KNOB DAMPER
3-1/2"
*-
DOOR
6" x 6"
*
TRIM STRIP
3-1/2" - 5" - 7-1/2"
END CAP
(LEFT HAND SHOWN)
OUTSIDE CORNER
12"
12"
*-
7 1/2" FOR
LOW PROFILES
9" FOR
STANDARD
WALL TRIM
SUPPORT
12" WIDE ACCESS
PANEL (REMOVABLE)
DOOR
6" x 6"
12" WIDE ENCLOSURE
WITH ACCESS DOOR
(SECURITY LOCK OPT.)
INSIDE CORNER
12" WIDE END CAP
WITH ACCESS DOOR
(SECURITY LOCK OPT.)
(ALL ACCESSORIES ARE OVERLAP TYPE, BUTT TYPE OPTIONAL)
(ALL ACCESSORIES ARE OVERLAP TYPE, BUTT-TYPE OPTIONAL)
S-SL
3-1/2"
3-1/2"
3-1/2"
9"
9"
12"
12"
DOOR
6" x 6"
DOOR
6" x 6"
TRIM STRIP
3-1/2" - 5" - 7-1/2"
END CAP
(LEFT HAND SHOWN)
OUTSIDE CORNER
INSIDE CORNER
12" WIDE ENCLOSURE
WITH ACCESS DOOR
(w/ ALLEN KEY LOCK)
12" WIDE END CAP
WITH ACCESS DOOR
(w/ ALLEN KEY LOCK)
49
Applications
Z-CORNER ENCLOSURE
FR5 Z-CORNER LEFT HAND SHOWN *
WALL
A **
FS5 Z-CORNER RIGHT HAND SHOWN *
B
B
WALL
C ***
TOP VIEW
FS5 Z-CORNER LEFT HAND SHOWN ****
C **
WALL
WALL
A ***
TOP VIEW
FS5 Z-CORNER RIGHT HAND SHOWN ****
* Z-CORNERS ARE AVAILABLE FOR ALL ENCLOSURE STYLES
** DIMENSION MUST BE MIN. 1-5/8" LARGER THAN THE ENCLOSURE DEPTH (TYP. USE SUBMITTAL INSIDE CORNER WALL LENGTH)
*** DIMENSION MUST BE MIN. 1-1/2" (TYP. USE SUBMITTAL OUTSIDE CORNER WALL LENGTH)
**** WHEN ORDERING SPECIFY ENCLOSURE STYLE, DIMENSIONS LISTED FROM LEFT TO RIGHT & LH or RH STYLE Z-CORNER
50
Applications
COLUMN ENCLOSURE
** Column depth must be at least 5" larger than Enclosure depth.
**
(L.H. FS Style Enclosure Shown)
Standard Column corners may be field cut to shorter lengths.
Column trims used to finish enclosure
51
RATINGS CORRECTION DATA
TABLE 1 - Installed Height Correction Data
INSTALLED HEIGHT (in.)
18 or
less
19
20
21
22
23
24
25
26
27
28
29
30
32
34
36 or
less
HEATING-EFFECT FACTOR
1.065
1.060
1.056
1.052
1.047
1.043
1.039
1.035
1.030
1.026
1.022
1.017
1.013
1.009
1.004
1.000
If finned tube is to be mounted in an enclosure having an installed height which is greater than the
minimum recommended in the ratings table, and if the installed height is greater than 18 inches,
the steam- and hot-water-heat ratings shown for the finned tube must be corrected by multiplying
by a correction factor:
Installed-Height Correction Factor =
Heating-Effect Factor for Actual Installed Height
Heating-Effect Factor for Recommended Minimum Installed Height
(Example: One row of 1-1/4C - 4-1/4 - 48 finned tube is
mounted in an ETO enclosure which is 4-5/8 inches high and
is installed 26 inches from the floor instead of the recommended 8-5/8 inches from the floor. Correction factor =
1.030/1.065 = 0.9671. At an average water temperature of
180°F, this enclosure will deliver 990 x 0.9671 = 957 BTU/
hr./ft.)
TABLE 2 - Steam-Heat Correction Factors: Nonstandard Steam Pressures and Entering Air Temperatures
STEAM
ENTERING AIR TEMPERATURE (°F)
PRESSURE
GAGE (psig) *
PRESSURE
ABSOLUTE (psia) *
TEMPERATURE
(°F) †
45
55
65
70
75
80
85
90
100
110
120
130
140
150
0
14.70
212.0
1.19
1.09
0.97
0.92
0.87
0.82
0.77
0.70
0.63
0.54
0.46
0.38
0.31
0.25
0.9
15.60
215.0
1.22
1.11
1.00
0.95
0.90
0.84
0.80
0.75
0.65
0.57
0.48
0.40
0.33
0.26
5
19.70
227.1
1.34
1.22
1.11
1.05
1.00
0.95
0.90
0.81
0.75
0.66
0.57
0.49
0.41
0.34
10
24.70
239.4
1.45
1.33
1.22
1.17
1.11
1.05
1.00
0.91
0.85
0.75
0.66
0.58
0.50
0.42
15
29.70
249.8
1.55
1.43
1.31
1.26
1.20
1.14
1.09
1.00
0.94
0.84
0.75
0.66
0.57
0.49
20
34.70
258.8
1.63
1.52
1.40
1.33
1.28
1.23
1.17
1.07
1.02
0.92
0.82
0.73
0.64
0.55
30
44.70
247.0
1.78
1.66
1.54
1.48
1.42
1.37
1.31
1.21
1.15
1.05
0.95
0.85
0.76
0.68
40
54.70
286.7
1.91
1.79
1.66
1.61
1.54
1.49
1.43
1.32
1.27
1.16
1.06
0.97
0.87
0.78
50
64.70
297.7
2.02
1.90
1.77
1.71
1.65
1.60
1.54
1.42
1.37
1.26
1.16
1.06
0.96
0.87
Use of table: Multiply BTU shown for steam heat (at 215°F) in Ratings table by appropriate correction factor given above to obtain corrected steam-heat rating.
*Corrected for altitude.
† From Keenan, J.H and Keyes, FG., Thermodynamic Properties of Steam, John Wiley & Sons, Inc., New York, 1936
TABLE 3 - Hot-Water-Heat Correction Factors: Nonstandard Entering Water Temperatures
AVERAGE WATER TEMPERATURE (°F)
ENTERING AIR
TEMPERATURE (°F)
240
230
220
210
200
190
180
170
160
45
1.47
1.37
1.27
1.18
1.09
1.00
0.91
0.82
0.73
50
1.41
1.30
1.21
1.12
1.03
0.94
0.86
0.77
0.69
55
1.35
1.24
1.15
1.06
0.97
0.89
0.81
0.72
0.64
60
1.29
1.19
1.09
1.01
0.92
0.84
0.75
0.67
0.59
70
1.17
1.08
0.98
0.90
0.81
0.73
0.65
0.57
0.49
75
1.12
1.03
0.93
0.85
0.77
0.69
0.61
0.53
0.45
80
1.07
0.98
0.88
0.80
0.72
0.64
0.56
0.48
0.40
85
1.02
0.93
0.84
0.76
0.68
0.60
0.52
0.44
0.36
Use of table: Multiply BTU shown for steam heat (at 215°F) in Ratings table by appropriate correction factor given above to obtain corrected hot-water-heat rating.
TABLE 4 - Hot-Water-Heat Correction Factors: Nonstandard Average Water Temperature
AVERAGE WATER TEMPERATURE (°F)
300
290
280
270
260
250
150
140
130
120
110
100
CORRECTION FACTOR
1.87
1.76
1.64
1.54
1.44
1.39
0.45
0.40
0.33
0.26
0.20
0.15
Use of table: Multiply BTU shown for steam heat (at 215°F) in Ratings table by appropriate correction factor given above to obtain corrected hot-water-heat rating.
52
RATINGS CORRECTION DATA
FIGURE 1 - Hot-Water-Heat Correction Factors (And Water Pressure Drops): Water Velocities Less Than 3fps
TOTAL BTU REQUIRED
20°F
30°F
TEMP.
TEMP.
DROP
DROP
WATER
FLOW
RATE
(gpm)
90,000
180,000
270,000
18
80,000
160,000
240,000
16
70,000
140,000
210,000
14
60,000
120,000
180,000
12
50,000
100,000
150,000
10
40,000
80,000
120,000
8
30,000
60,000
90,000
6
20,000
40,000
60,000
4
10,000
20,000
30,000
2
0
0
0
0
FEET PER SECOND
18
GALLONS PER MINUTE
10°F
TEMP.
DROP
16
14
E
TUB
EEL ER TUBE
T
S
"
1-1/4 /4" COPP
1-1
BE
PER TU
1" COP
EEL
1" ST
12
10
8
6
ER TUBE
4
3/4" COPP
2
0
.25
.50
.75
1.00
1.25
1.50
1.75
2.00
2.25
2.50
2.75
3.00
WATER VELOCITY (fps)
.25
.50
.75
WATER VELOCITY CORR. FACTOR
.905
.931
.946
.951
.966
1" COPPER TUBE
.06
.20
.39
.64
.93
1.27
1.65
2.08
2.53
3.00
3.53
4.10
1-1/4" COPPER TUBE
.04
.15
.30
.48
.72
.98
1.28
1.60
1.98
2.43
2.85
3.32
PRESSURE DROP
(ft. of water per 100 ft. of tube)
1.00
1.25
1.50
1.75
.973
.979
2.00
2.25
.984
2.50
.988
2.75
.992
3.00
.996
1.00
Use of table: Multiply Btu shown for hot-water heat in Ratings table by correction factor found above to obtain corrected hot-water-heat rating.
FIGURE 2 - Effect of Water Velocity
on Finned Tube Output
THE EFFECTS OF WATER VELOCITY ON FINNED TUBE OUTPUT.
1.1
TEMPERATURE RISE (°F)
Figure 2 shows rating factors that
can be utilized when the water velocity
falls below 3 f.p.s.
It is recommended when designing
low-load systems that the water
velocity be a key factor in element
selection. Figure 3 can be used to
ensure that the water velocity is above
the critical level with various tube
sizes.
For more information on this topic,
please refer to the 1969 equipment
volume of ASHRAE Guide and Data
Book Page #393.
The Institute of Boiler and Radiator
Manufacturers sponsored a test
program at the University of Illinois to
determine the effect of water velocity
on heat output of various sizes of
finned tubed element.
The results of this test show that
when the water velocity falls below 0.4
f.p.s., the flow changes from turbulent
to streamline. With systems designed
at water velocities below this point the
output cannot be accurately predicted
so should always be avoided.
1.0
RATING POINT
3 FPS
0.9
0.8
0.7
0.6
0
1
2
3
4
5
6
WATER VELOCITY (FT./SEC.)
FIGURE 3 - Water Velocity in Ft./Sec. VS G.P.M.
1"
.6
P
CO
E
T
"S
1
ER
PP
.5
EL
CO
L
EE
/4"
ST
"
4
/
1-1
.4
1-1
.3
.2
CRITICAL
VELOCITY
.1
0
.2
.4
.6
.8
1.0
1.2
1.4
RATE OF FLOW (G.P.M.)
1.6 1.8
CO
PP
1"
3/
4"
.7
R
PE
4
WATER VELOCITY (FT./SEC.)
”C
3/4
WATER VELOCITY (FT./SEC.)
.8
R
PE
ER
OP
PE
R
.9
P
CO
1"
EL
E
ST
/4
1-1
3
ER
PP
O
"C
EL
TE
"S
/4
1-1
2
1
0
2
4
6
8
10
RATE OF FLOW (G.P.M.)
12
14
53
RATINGS CORRECTION DATA
TABLE 5 - Thermal Expansion in Pipe
120
140
160
180
200
220
240
260
280
300
STEEL PIPE
.396
.550
.709
.869
1.032
1.193
1.361
1.524
1.691
1.816
COPPER PIPE
.576
.800
1.014
1.261
1.506
1.726
1.966
2.195
2.428
2.671
TEMPERATURE OF MEDIUM
ELONGATION
(in/100 ft.)
The table above indicates elongation in inches/100 ft. at the temperature shown when the pipe was installed at 70°F.
TEMPERATURE RISE (°F)
FIGURE 4 - Lineal Expansion of Finned Tube
E
UB
300
T
EL
200
BE
STEAM
STEAM
PRESSURE PRESSURE
PSIG
PSIA
U
R T
E
PP
CO
E
ST
TABLE 6 - PROPERTIES OF SATURATED STEAM
100
0
.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
LINEAL EXPANSION (inches/100 ft.)
TABLE 7 - HEAT LOSS FROM BARE PIPE & TUBING
(Btu per hour per foot per degree F difference)
HORIZONTAL BARE STEEL PIPE
AVERAGE TEMPERATURE DIFFERENCE
BETWEEN HEATING MEDIUM AND 70°F AIR (°F)
NOMINAL
PIPE SIZE
(in.)
50
80
1/2
.455
.495
.546
.584
3/4
.555
.605
.666
.715
1
.684
.743
.819
.877
1-1/4
.847
.919
1.014
1.086
1-1/2
.958
1.041
1.148
1.230
2
1.180
1.281
1.412
1.512
2-1/2
1.400
1.532
1.683
1.796
110
140
BOILING
POINT OF
STEAM
TEMP.
VOLUME
OF 1 LB
OF STEAM
CU. FT.
54
LATENT
HEAT OF
EVAP.
Btu.
TOTAL
HEAT OF
STEAM
Btu.
.899
14.70
212.0
26.79
180.0
970.4
1150.4
1
15.70
215.3
25.20
183.3
968.2
1151.6
2
16.70
218.5
23.78
186.6
966.2
1152.8
4
18.70
224.4
21.40
192.5
962.4
1154.9
6
20.70
229.8
19.45
198.0
958.8
1156.8
8
22.70
234.8
17.85
203.0
955.5
1158.6
10
24.70
239.4
16.49
207.7
952.5
1160.2
15
29.70
249.8
13.87
218.2
945.5
1163.7
25
39.70
266.8
10.57
235.6
933.6
1169.2
50
64.70
297.7
6.68
267.2
911.2
1178.4
75
89.70
320.1
4.91
290.3
894.2
1184.4
100
114.70
337.9
3.891
308.8
880.0
1188.8
125
139.70
352.9
3.225
324.4
867.8
1192.2
GLYCOL SOLUTION CORRECTION FACTORS
Propylene Glycol
Solution
By Volume
ProHeat Transfer @ 180°F
HORIZONTAL TARNISHED STEEL PIPE
AVERAGE TEMPERATURE DIFFERENCE
BETWEEN HEATING MEDIUM AND 70°F AIR (°F)
HEAT OF
THE
LIQUID
Btu.
Freezing point for
Propylene Glycol
Solutions
Factor
20%
.97
50%
.90
20%
+17°F
30%
+4°F
40%
-13°F
50%
-28°F
55%
–
NOMINAL
PIPE SIZE
(in.)
50
80
1/2
.250
.287
.300
.321
3/4
.340
.381
.409
.429
1
.440
.475
.509
.536
1-1/4
.500
.559
.618
.622
Approximate Factors for Corrective Heat Values
at Varying Altitudes
1-1/2
.580
.656
.710
.750
ALTITUDE
2
.730
.825
.890
.957
2-1/2
.880
1.000
1.091
1.153
110
140
BTU/FT2 EDR*
FACTOR
Sea Level - 1000 ft.
240
1.000
1000 ft. - 3000 ft.
230
.958
3000 ft. - 5000 ft.
223
.929
5000 ft. - 7000 ft.
216
.900
7000 ft. - 10,000 ft.
209
.871
*EDR - Equivalent Direct Radiation area (for steam heat) per active (finned) linear foot of tube.
Engineering Specifications
General:
Furnish and install finned tube heating
elements and enclosures as indicated on plans,
with required mounting components and
accessories. Material shall be manufactured
in accordance with Rittling’s High Quality
Standards and in conformance to ISO 9001:
2000 standards established and maintained by
Hydro-Air Components Inc. of
Hamburg, New York.
Steel Heating Elements:
Steel heating elements shall consist of
galvanized fins permanently bonded to high
pressure tubing by mechanically expanding
the steel tubing to the steel fins.
Copper-Aluminum Heating Elements:
Copper-Aluminum heating elements shall
consist of aluminum fins permanently
bonded to copper seamless drawn tubing by
mechanically expanding the copper tubing to
the aluminum fins.
Mounting Channel or Full Back Panel:
Mounting channel shall be die formed from
23-gauge galvannealed steel and the full back
panel from 20-gauge galvannealed steel. For
rigidity, the top projection of the mounting
channel or full back panel shall position the
enclosure away from the wall so as to allow for
installation or removal of enclosure without
damage to wall. A urethane gasket is available
to form air seal at wall (optional).
Hanger Brackets:
All hanger brackets shall be die formed for
rigidity. Brackets used for first row or one row
of finned tube shall incorporate a positive-lock
mounting clip for the enclosure. Brackets
will be self-gauging, allowing for a single
measurement installation.
All hangers must provide for lengthwise
movement of elements during expansion
and contraction as well as aligning elements
to prevent contact with brackets, walls,
or enclosure.
Enclosures & Accessories:
Enclosures shall be of the type as shown
on the drawings. Enclosures shall be
manufactured from 14-16-18-gauge cold
rolled steel. All enclosures shall be reinforced
with welded gussets. The joining of
enclosure shall be accomplished by use of
internal joggle joiners to provide for hairline
joints and added rigidity. No sheet metal
screws or other fastening devices shall be
visible.
Securing the top portion of the enclosure to
the wall will be accomplished by use of a full
length mounting channel or full back panel.
The lower portion of the enclosure will be
secured by use of a positive-locking,
bottom-mounting clip using fasteners, thus
preventing removal without tools.
Dampers:
Enclosure dampers shall be provided where
indicated. Damper blades shall be fabricated
from 18-gauge galvanized material painted
to match enclosure color. Threaded damper
screw and trunion shall provide positive
operation of blade to provide variable heat
output.
Damper shall be operated by solid plastic
damper knobs attached to damper screw.
Recessed security allenhead operators shall
be used in secure areas as indicated. Consult
factory on enclosure heights of 8" or below.
Access Doors:
Access doors shall be provided where noted
on plans. Doors shall be 6" x 6". Doors
shall be hinged and have slotted operators.
Recessed security allenhead operators shall
be used in secure areas as indicated. Doors
shall be positioned directly in enclosure
(in 12" long access panel). Consult factory
on enclosure heights of 8" or below.
Paint:
All enclosures and accessories shall be
degreased and chemically phosphatized
before application of a durable, attractive,
electrostatic epoxy powder coating.
Decorator colors are available from
Rittling’s Color Selector Chart.
55
SPECIAL APPLICATIONS
Zehnder Rittling’s reputation for leadership in commercial heating systems design and fabrication thrives on a
demonstrated ability to modify or adapt components from our vast standard inventory and to break new ground with
innovative applications.
Our ingenuity and expertise free architects from the constraints of hydronic-heating conventions. We can, for instance,
customize enclosures to any dimensions in stainless, textured embossed steel... or aluminum, for installation anywhere:
in ceilings... walls... or trenches. We’ll angle finned tube systems to match the slope of a floor. We’ll fabricate all copper
heating elements, bronze anodized and other specialty outlet grilles, or pipe enclosures without grilles. Challenge us
and we’ll build it!
If you have a special application you would like us to evaluate, please call to arrange a consultation with a Zehnder
Rittling expert.
Zehnder Rittling guarantees its products to be free from defects in material and workmanship for a period of one year
from date of shipment from our Buffalo, New York factory.
Should there be any defects in the good(s), the purchaser should promptly notify Zehnder Rittling and upon receipt
of written consent from Zehnder Rittling, the purchaser shall return the defective good(s) to the factory for inspection
with freight prepaid. If inspection shows the goods to be defective, Zehnder Rittling will at its discretion repair or
replace the said item(s).
Defects arising from damage due to shipment, improper installation, negligence or misuse by others are not covered by
this warranty.
This warranty is extended only to the original purchaser from Zehnder Rittling.
ISO 9001
BUREAU VERITAS
Certification
No 209940
Zehnder Rittling
100 Rittling Boulevard · Buffalo · NY · USA · 14220
Tel. 716-827-6510 · Fax 716-827-6523
sales@zehnder-rittling.com · www.zehnder-rittling.com
© Zehnder Rittling January 2011, English, subject to change without notice
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