Instruction Manual

6
B．Select the Proper Heating Cable Length
Use the following table to select the proper heating cable. (length)
Pipe
Length
Pipe Diameter
1/2” 3/4” 1” 1.25” 1.5”
3’ 3 3 3 3 3
4’
3
3 3 3 + 3 3 + 3
5’ 3 3 3 + 3 3 + 3 3 + 3
6’ 6 6 6 6 6
7’ 6 6 6 3 + 6 3 + 6
8’ 6 6 6 3 + 6 3 + 6
9’ 9 9 9 9 9
10’ 9 9 9 9 6 + 6
11’ 9 9 9 6 + 6 6 + 6
12’ 12 12 12 12 12
13’ 12 12 12 12 6 + 9
14’ 12 12 12 6 + 9 6 + 9
15’ 15 15 15 15 15
16’ 15 15 15 15 9 + 9
17’ 15 15 15 9 + 9 9 + 9
18’ 18 18 18 18 18
20’ 18 18 18 18 9 + 12
22’ 12 + 12 12 + 12 12 + 12 12 + 12 12 + 12
24’ 24 24 24 24 24
26’ 24 24 24 12 + 15 12 + 15
28’ 12 +15 12 +15 12 +15 12 + 15 12 + 18
30’ 30 30 30 30 30
35’
18 + 18
18 + 18
18 + 18
18 + 18
18 + 18
40’ 40 40 40 40 40
45’ 18 + 24 18 + 24 18 + 24 18 + 24 24 + 24
50’ 24 + 24 24 + 24 24 + 24 24 + 24 12 + 40
55’
24 + 30
24 + 30
24 + 30
24 + 30
18 + 40
60’
60
60
60
60
60
65’
6 + 60
6 + 60
6 + 60
6 + 60
6 + 60
70’ 30 + 40 30 + 40 30 + 40 30 + 40 12 + 60
75’ 15 + 60 15 + 60 15 + 60 15 + 60 15 + 60
80’
80
80
80
80
80
85’
24 +60
24 + 60
24 + 60
24 + 60
6 + 80
90’
30 + 60
30 + 60
30 + 60
30 + 60
30 + 60
95’ 18 +80 18 + 80 18 + 80 18 + 80 18 + 80
100’ 40 + 60 40 + 60 40 + 60 40 + 60 40 + 60
Example:
 3 means: you need one 3’ heating cable.
 3+3 means: you need two 3’ heating cables.

12+15 means: you need one 12’ heating
cable with one 15’ heating cable.
 For pipe sizes not listed or for more
information, contact the factory
representative, please contact us.
 This design guide is based on the generally
accepted maintenance temperature 4°C
(40°F) for freeze protection.
 This design guide is calculated based on 0.5”
fiberglass insulation. Closed-cell flexible
foam insulation may also be used. If the
overall R value of the insulation, protective
barrier and waterproof barrier is not greater
than 2.0.