nVent RAYCHEM FROSTEX Mode D'emploi page 8

Step 4.
Attach the heating cable to
the pipe
4A. Prepare to install the heating cable
Begin the installation at the electrical outlet.
Leave at least 1 foot (30 cm) of extra heating
cable so the ground-fault unit can be secured
to the outside of the thermal insulation, as
shown in Figures 1 and 2. This will relieve any
strain on the heating cable or plug. However,
be careful not to leave heating cable hanging
in a loose loop where it could be accidentally
snagged and pulled out.
Make certain you have removed any old
heating tapes and insulation.
Important: The ground-fault unit and plug
must be kept dry. It is important to include the
drip loop to prevent water from getting into
the ground-fault unit.
Outlet
cover
9800
Flexfit
plug
Drip loop
Figure 1. Typical manufactured housing installation
Figure 2. Typical installation
4B. Install the heating cable Single
run method
Run the heating cable in a straight line
approximately a third of the way up from the
bottom of the pipe, as shown in Figure 3.
Frostex 9610
application tape;
1-foot spacing
Figure 3. Single run method
8 | nVent.com/RAYCHEM
Thermal
insulation
Cable ties
or tape
End seal
Multiple run method
When two or more runs are required, install
the heating cable in the 4 o'clock and 8 o'clock
positions as shown in Figure 4. When three
runs are required, install the heating cable as
shown in Figure 5.
8 4
Figure 4. Double runs
4C. Tape the heating cable and end seal to
the pipe
Fasten the heating cable to the pipe at 1-foot
(30-cm) intervals, using two or three thicknesses
of 9610 application tape or equivalent.
Provide extra heat at valves and spigots
by wrapping each with 1 foot (30 cm)
of additional heating cable, overlapping
as required.
If you have excess heating cable at the end
of your pipe, double it back along the pipe
where the insulation will completely cover it
as shown in Figure 6. Using 9610 application
tape or equivalent, tape the end seal to the
pipe as shown in Figures 1, 2, and 6.
Outlet
cover
9800
FlexFit
plug
Drip loop
Ground
level
Figure 6. Multiple run installation
Important: In a crock or standpipe, run the
Frostex heating cable down and back up the
pipe (as shown in Figure 6), so that the end
seal is well above the ground level and will not
be sitting in water.
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8 4
Figure 5. Triple runs
End seal
Cable ties
or tape
Thermal
insulation
Pipe
Crock