Trane 4MYW4509A1 Installation Manual page 12

Installation
3. Hang the mounting slots of the indoor unit on the upper tabs of the rear panel and ascertain
Figure 7.
Installing connection pipe
1. Align the center of the piping flare with the respective valve. See following figure.
Figure 8.
2. Fasten the flared nut manually and then tighten the nut using a spanner wrench or a torque
Table 1.
Note: First connect the connection pipe to the indoor unit; then connect to the outdoor unit. Be
12
their firmness.
Hanging the Unit
Indoor unit Flare
nut
piping
Spanner
wrench
wrench.
Tightening torque
Hex nut diameter
6mm - 1/4"
9.5mm - 3/8"
12mm - 1/2"
16mm - 5/8"
careful not to damage or bend the connection pipe. In order to avoid future leaking, do not
over-tighten the nut.
Piping
Torque wrench
Tightening torque (N-m)
15-20
31-35
50-55
60-65
MS-SVN046A-EN