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3. Insulation
Operating safely in frost conditions down to -20°C can only be guaranteed by using an
insulation material. Aluminium Adhesive Tape wound around the heating cable
eases installation and distributes warmth evenly.
An insulation layer with a minimum thickness of 20 mm reduces the heating energy
requirements.
The thermistor must not be covered by insulation, so that it can monitor the ambient
temperature properly at all times.
Insulation of Heated Pipes
Pipe Size (inch)
1/2
3/4
1
1
1/4
1
1/2
Pipe Size (mm)
15
20
25
32
40
Insulation (mm)
20
20
30
30
40
Temperature Monitoring
The thermistor is located at the end of the heating cable and should measure and regulate
the temperature at the position of the tube where the temperature is lowest.
Note: The fixings must not exert any pressure on the thermistor.
The thermistor should be carefully fitted with the flat side sitting directly on the left or
right side of the pipe and secured using either adhesive tape or plastic cable ties.
Insulation
Frost
Protection
Cable
Aluminium adhesive tape
