Clearance Chart:
For safe and efficient operation, maintain at least the following
minimum clearances at all times:
Bottom of Heater to Finished Floor:
• Front Inlet Models: (max 600 watts per foot)
- May be installed on floor. However, for best performance,
install bottom of heater approximately 3 inches (76 mm) off floor.
• Bottom Inlet Models:
- 100-250 watts per foot – 1-3/4 inch (44 mm)
- 375-750 watts per foot – 3 inches (76 mm)
Top of Heater to Ceiling (all models):
- Minimum 36 inches (914 mm)
Top of Heater to Bottom of Drapes Above Heater:
- Minimum 12 inches (305 mm)
IMPORTANT NOTE: Certain fabrics and vinyl materials (such
as vinyl blinds) may become damaged by the heated air from
the heater and should not be installed above the heater.
Front of Heater to Full Length Drapes in Front of Heater:
- Minimum between bottom of drapes and floor – 2-1/2 inches
(64 mm)
- Minimum between top of drapes and ceiling – 1/2 inch (13
mm)
- Minimum between front of heater and nearest fold of drape –
2 inches (51 mm)
Top of Heater to Bottom of Window Sill:
- Minimum 12 inches (305 mm)
2
No. 12 AWG
No. 10 AWG
No. 8 AWG
9
8
4
11.5 Amps
17.4 Amps
24.0 Amps
9.3 Amps
14.0 Amps
21.0 Amps
8.1 Amps
12.1 Amps
-
Copper wire
size 90º C
Max. No.
wire installed
in wireway
Up to 3
conductors
4 to 6
conductors
7 to 9
conductors
Maximum Allowable Current
Table B. Sizing Field Installed Wiring
Catalog
Length
Watts
Total
Amperage
Number
"L"
per ft.
Watts
120V
208V
240V
277V
347V
600V
02100
100
200
1.7
1.0
0.8
--
--
--
02125
28"
125
250
2.1
1.2
1.0
0.9
--
--
02150
(711mm)
150
300
2.5
1.4
1.3
1.1
--
--
02188
188
376
3.1
1.8
1.6
1.4
--
--
02250
250
500
4.2
2.4
2.1
1.8
1.4
--
03100
100
300
2.5
1.4
1.3
1.1
--
--
03125
3'
125
375
3.1
1.8
1.6
1.4
1.1
--
03150
(914mm)
150
450
3.8
2.2
1.9
1.6
1.3
--
03188
188
564
4.7
2.7
2.4
2.0
1.6
--
03250
250
750
6.3
3.6
3.1
2.7
2.2
--
04100
100
400
3.3
1.9
1.7
1.4
1.2
--
04125
4'
125
500
4.2
2.4
2.1
1.8
1.4
--
04150
(1219mm)
150
600
5.0
2.9
2.5
2.2
1.7
--
04188
188
752
6.3
3.6
3.1
2.7
2.2
1.3
04250
250
1000
8.3
4.8
4.2
3.6
2.9
1.7
05100
100
500
4.2
2.4
2.1
1.8
1.4
0.8
05125
5'
125
625
5.2
3.0
2.6
2.3
1.8
1.0
05150
(1524mm)
150
750
6.3
3.6
3.1
2.7
2.2
1.3
05188
188
940
7.8
4.5
3.9
3.4
2.7
1.6
05250
250
1250
10.4
6.0
5.2
4.5
3.6
2.1
06100
100
600
5.0
2.9
2.5
2.2
1.7
1.0
06125
6'
125
750
6.3
3.6
3.1
2.7
2.2
1.3
06150
(1829mm)
150
900
7.5
4.3
3.8
3.2
2.6
1.5
06188
188
1128
9.4
5.4
4.7
4.1
3.3
1.9
06250
250
1500
12.5
7.2
6.3
5.4
4.3
2.5
07100
100
700
--
3.4
2.9
2.5
2.0
1.2
07125
7'
125
875
--
4.2
3.6
3.2
2.5
1.5
07150
(2134mm)
150
1050
--
5.0
4.4
3.8
3.0
1.8
07188
188
1316
--
6.3
5.5
4.8
3.8
2.2
07250
250
1750
--
8.4
7.3
6.3
5.0
2.9
08100
100
800
--
3.8
3.3
2.9
2.3
1.3
08125
8'
125
1000
--
4.8
4.2
3.6
2.9
1.7
08150
(2438mm)
150
1200
--
5.8
5.0
4.3
3.5
2.0
08188
188
1504
--
7.2
6.3
5.4
4.3
2.5
08250
250
2000
--
9.6
8.3
7.2
5.8
3.3
09100
100
900
--
4.3
3.8
3.2
2.6
1.5
09125
9'
125
1125
--
5.4
4.7
4.1
3.2
1.9
09150
(2743mm)
150
1350
--
6.5
5.6
4.9
3.9
2.3
09188
188
1692
--
8.1
7.1
6.1
4.9
2.8
09250
250
2250
--
10.8
9.4
8.1
6.5
3.8
10100
100
1000
--
4.8
4.2
3.6
2.9
1.7
10125
10'
125
1250
--
6.0
5.2
4.5
3.6
2.1
10150
(3048mm)
150
1500
--
7.2
6.3
5.4
4.3
2.5
10188
188
1880
--
9.0
7.8
6.8
5.4
3.1
10250
250
2500
--
12.0
10.4
9.0
7.2
4.2
Table A - DBA & SHA
(one element)
Amperage
Catalog
Length
Watts
Total
208V
240V
277V
347V
600V
Number
"L"
per ft.
Watts
1 Ph 3 Ph
1 Ph
3 Ph
1 Ph
1 Ph
1 Ph
3 Ph
02375
375
750
3.6
-
3.1
-
2.7
-
-
-
02500
28"
500
1000
4.8
-
4.2
-
3.6
2.9
-
-
02600
(711mm)
600
1200
5.8
3.3
5.0
2.9
4.3
-
-
-
02750*
750
1500
7.2
4.2
6.3
3.6
5.4
4.3
-
-
03375
375
1125
5.4
-
4.7
-
4.1
-
-
-
03500
3'
500
1500
7.2
-
6.3
-
5.4
4.3
-
-
03600
(914mm)
600
1800
8.7
5.0
7.5
4.3
6.5
-
-
-
03750*
750
2250
10.8
6.3
9.4
5.4
8.1
6.5
-
-
04375
375
1500
7.2
-
6.3
-
5.4
4.3
-
-
04500
4'
500
2000
9.6
-
8.3
-
7.2
5.8
3.3
-
04600
(1219mm)
600
2400
11.5
6.7
10.0
5.8
8.7
6.9
-
-
04750*
750
3000
14.4
8.3
12.5
7.2
10.8
8.6
5.0
2.9
05375
375
1875
9.0
-
7.8
-
6.8
5.4
3.1
-
05500
5'
500
2500
12.0
-
10.4
-
9.0
7.2
4.2
-
05600
(1524mm)
600
3000
14.4
8.3
12.5
7.2
10.8
8.6
5.0
2.9
05750*
750
3750
18.0
10.4
15.6
9.0
13.5
10.8
6.3
3.6
06375
375
2250
10.8
-
9.4
-
8.1
6.5
3.8
-
06500
6'
500
3000
14.4
-
12.5
-
10.8
8.6
5.0
-
06600
(1829mm)
600
3600
17.3
10.0
15.0
8.7
13.0
10.4
6.0
3.5
06750*
750
4500
21.6
12.5
18.8
10.8
16.2
13.0
7.5
4.3
07375
375
2625
12.6
-
10.9
-
9.5
7.6
4.4
-
07500
7'
500
3500
16.8
-
14.6
-
12.6
10.1
5.8
-
07600
(2134mm)
600
4200
20.2
11.7
17.5
10.1
15.2
12.1
7.0
4.0
07750*
750
5250
25.2
14.6
21.9
12.6
19.0
15.1
8.8
5.1
08375
375
3000
14.4
-
12.5
-
10.8
8.6
5.0
-
08500
8'
500
4000
19.2
-
16.7
-
14.4
11.5
6.7
-
08600
(2438mm)
600
4800
23.1
13.3
20.0
11.6
17.3
13.8
8.0
4.6
08750*
750
6000
28.8
16.7
25.0
14.5
21.7
17.3
10.0
5.8
09375
375
3375
16.2
-
14.1
-
12.2
9.7
5.6
-
09500
9'
500
4500
21.6
-
18.8
-
16.2
13.0
7.5
-
09600
(2743mm)
600
5400
26.0
15.0
22.5
13.0
19.5
15.6
9.0
5.2
09750*
750
6750
32.5
18.8
28.1
16.3
24.4
19.5
11.3
6.5
10375
375
3750
18.0
-
15.6
-
13.5
10.8
6.3
-
10500
10'
500
5000
24.0
-
20.8
-
18.1
14.4
8.3
-
10600
(3048mm)
600
6000
28.8
16.7
25.0
14.5
21.7
17.3
10.0
5.8
10750*
750
7500
36.1
20.8
31.3
18.1
27.1
21.6
12.5
7.2
SHA
(two and three element)
*Bottom inlet only
Table C. Maximum Length of Heater Run
Watts/Ft
Max. allowable length of heater run in feet (meters)
of
120V
208V
240V
277V
347V
600V
Heaters
1 Ph
1 Ph
3 Ph
1 Ph
3 Ph
1 Ph
1 Ph
1 Ph
3 Ph
100
54 (16)
93 (28)
-
108 (33)
-
124 (38)
156 (47)
270 (82)
467 (142)
125
43 (13)
74 (23)
-
86 (26)
-
99 (30)
125 (38)
216 (66)
373 (113)
150
36 (11)
62 (19)
-
72 (22)
-
83 (25)
104 (32)
180 (55)
311 (95)
188
28 (9)
49 (15)
-
57 (17)
-
66 (20)
83 (25)
146 (45)
248 (76)
250
21 (6)
37 (11)
-
43 (13)
-
49 (15)
62 (19)
108 (33)
186 (57)
375
-
34 (7)
-
28 (9)
-
33 (10)
42 (13)
72 (22)
125 (38)
500
-
18 (5)
-
21 (6)
-
24 (7)
31 (9)
54 (16)
93 (28)
600
-
15 (5)
27 (8)
18 (5)
31 (9)
20 (6)
26 (8)
45 (14)
78 (24)
750
-
12 (4)
21 (6)
14 (4)
24 (7)
16 (5)
21 (6)
36 (11)
62 (19)
