PIPe FReeze PROTeCTIOn AnD FLOW MAInTenAnCe
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Table 10 Maximum Circuit Length in Meters
4°C
/ 43°C
Maintain*
Start-up
temperature (°C)
Cb size
(A)
5XL1
8XL1
5XL2
8XL2
12XL2
120 v
120 v 208 v
240 v
277 v
208 v
240 v
277 v
208 v
240 v
277 v
–29°C
15
31
23
53
54
56
40
42
44
34
35
36
20
41
31
71
72
75
53
56
59
45
46
48
30
61
46
106
108
112
80
84
89
68
69
71
40
82
61
142
145
149
106
112
118
90
92
95
–18°C
15
35
26
61
62
64
45
48
51
36
37
38
20
47
35
81
83
85
61
64
67
49
50
51
30
70
52
121
124
128
91
96
101
73
74
77
40
82
64
143
149
162
113
/122
119
/128
128
/135
97
99
102
–7°C
15
41
31
71
72
74
53
56
59
39
39
41
20
54
41
94
96
99
70
74
78
51
52
54
30
82
61
141
144
149
106
111
117
77
79
81
40
82
64
143
149
162
113
/141
119
/148
128
/156
104
/106
105
108
4°C
15
49
36
85
86
89
63
66
70
43
44
46
20
65
48
113
115
119
84
88
93
58
59
61
30
82
64
143
149
162
113
/127
119
/134
128
/141
87
89
91
40
82
64
143
149
162
113
/169
119
/178
128
/188
104
/121
110
/124
116
/128
10°C
(buried grease)
15
–
–
–
–
–
70
73
77
46
47
49
20
–
–
–
–
–
93
98
103
62
63
65
30
–
–
–
–
–
139
147
155
93
95
98
40
–
–
–
–
–
186
195
206
124
126
130
18°C
(indoors grease)
15
–
–
–
–
–
83
87
92
52
53
54
20
–
–
–
–
–
110
116
123
69
70
72
30
–
–
–
–
–
166
174
184
103
105
108
40
–
–
–
–
–
186
201
220
131
140
149
* When maximum circuit length is listed in:
• black type, the value is for applications with a 4°C maintain
•
red italic
type, the value is for applications with a 43°C maintain
Example: Pipe Freeze Protection – Water Piping
Total heating cable length
315 ft of 5XL1-CR
(from Step 3)
Supply voltage
120 V
(from Step 1)
Minimum start-up temperature
–20°F (–29°C) (
from Step 1)
number of circuits
315 ft / (210 ft max CL) =
1 .8 circuits
Round up to 2 circuits
Example: Flow Maintenance – Greasy Waste Line
Total heating cable length
223 ft of 12XL2-CT
(from Step 3)
Supply voltage
208 V
(from Step 1)
Minimum start-up temperature
50°F (10°C) (f
rom Step 1)
number of circuits
223 ft / 428 ft = 0 .8 circuits
Round up to 1 circuit
