Publicité
Figure 1 Straight-traced installation
12 inches
Tape or
W51 heating
1/2" insulation
cable ties
cable
Figure 2 Spiral-traced installation
12 inches
Tape or
W51 heating
cable ties
cable
10 feet
Glass tape
(typical)
Heating
cable
Wrap loops
Apply glass
Pull heating
tape before
cable loop
in opposite
length
direction
spiraling
heating cable
on pipe
Heating cable installation
• For straight tracing, install the heating cable
1. Prepare for installation.
on a lower half of the pipe; for example, in
• Store the heating cable in a clean, dry place.
the 4 o'clock or 8 o'clock position.
• Complete piping pressure test.
• Be sure to install the additional heating
• Prior to installing the cable, remove any
cable required for valves, flanges, etc. as
sharp surfaces on the pipe that might
shown in Figures 1 and 2.
damage the heating cable.
• When the design calls for spiraling, begin
• Review the Gardian heating cable design
by suspending a loop every 10 feet as
and compare to materials received to verify
shown in Figure 2 . To determine the loop
that you have the proper Gardian heating
length, divide the Gardian length by your
cable.
pipe length and multiply by 10. For
• Walk the system and plan the routing of
example, if you are using a 50 ft Gardian
the Gardian heating cable on the pipe.
on a 40 foot pipe, leave a 12-foot loop of
heating cable at every 10-foot section of
2. Position and attach heating cable to pipe.
pipe. Grasp the loop in its center and wrap
• Be sure all piping to be traced is dry.
it around the pipe. Even out the distance
• Install heating cable, using straight tracing
between spirals by sliding the wraps along
Figure 1, or spiraling Figure 2.
End view
Waterproof covering
Pipe label
1/2" insulation
Waterproof covering
Pipe label
Tape after
spiraling
heating
cable on
pipe
the pipe. Use glass tape to secure the
center of the loop to the pipe.
• Fasten Gardian heating cable to the pipe at
1-foot intervals using H903 fiberglass
application tape or nylon cable ties. Do not
use vinyl electrical tape, duct tape, metal
bands, or wire.
• If excess cable remains at the end of the
pipe, double it back along the pipe.
3. Check the installation.
• Prior to installing thermal insulation, make
sure the heating cable is free of mechanical
damage (from cuts, clamps, etc.) and
thermal damage (from solder, overheating,
etc.).
3
Publicité
