Drilling The Piping Hole - Trane 38 Series Installer Manual

38 Series Mini-Split
Wall
9K-12K
Rear piping hole
Wall
18K-24K
Φ2 3/4 inch (70mm)
Rear piping hole

Drilling the Piping Hole

The piping can be connected in the direction of right, rear right, left or rear left.
Left
1. When the position of the drain piping has been selected, cut out the corresponding knock-out
from the unit housing.
2. Select the position of the piping hole to be drilled according to the direction of the drain pipe
position selected for the application. The position of the piping hole should be slightly lower
than the wall mounted frame.
3. Drill a hole with the diameter of 2 3/16 inch or 2 3/4 inch (24K unit) for the selected outlet pipe
position. In order to drain smoothly, slant the piping hole on the wall slightly downward to the
outdoor side with a gradient of 5-10°. (As shown below)
4. Insert a sleeve into the hole to prevent the connection piping and wiring from being damaged
when passing through the hole.
Mark in the middle
Space
to the
wall
min.
6 inch
Left
2 1/4 inch (57mm)
Mark the center
Space
to the
wall
min.
6 inch
Left
Right
Cut off
the hole
Indoor
5-10
Level
Rear piping hole
Level meter
Rear piping hole
Right
outdoor
Φ2 1/4 (55)
Φ2 3/4 (70)
inch(mm)
14
Wall
Space
to the
wall
min.
6 inch
Right
2 1/4 inch (57mm)
Wall
Space
to the
wall
min.
6 inch
Right
Φ2 3/4 inch (70mm)
Rear left