Drilling The Piping Hole - Trane 18 Series Installer's Manual

Installer's Guide
Wall
9K-12K
Left
Φ2 3/16inch (56mm)
Rear piping hole
Wall
18K-24K
Left
Ф 2 3/4inch (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 correct diameter 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.
14
Mark the middle
Space
to the
wall
above
6
inches
Mark the middle
Space
to the
wall
above
6
inches
Right
Cut off
the hole
Indoor
5-10
Level
Φ2 3/16inch (56mm)
Rear piping hole
Level
(Rear piping hole)
Right
outdoor
Φ2 3/16 (56)
Φ2 3/4 (70)
inch(mm)
Wall
Space
to the
wall
above
6
inches
Right
Wall
Space
to the
wall
above
6
inches
Right
Ф2 3/4inch (70mm)
Rear left
88-M4MHW18-1C-EN