User's Manual

Table Of Contents
1027144–0001 Revision D 4–6 Installing IFL cables
RT installation
Follow the steps below to drill a hole for the IFL cable only when
there is not an existing entry you can use.
1. Go to the roof.
2. Determine where the IFL cable will penetrate the roof.
Refer to the RT rooftop drawings.
Before you drill, consider these guidelines:
Important: Do not penetrate any part of the building
structure without first making sure you have the explicit
permission of the customer and building owner.
Horizontal penetration is preferable to vertical penetration.
(A horizontal hole is less likely to leak.)
Take care not to destroy cabling or wiring under the roof or
inside the wall.
Round penetration holes are preferred over square holes.
(They are easier to make and seal.)
3. Drill a 2–inch (51–millimeter) diameter hole at the building
penetration point.
Building
penetration
point
Building surface
2 inches
(51 mm)
rt038
4.5
Penetrating the roof