Trane 4TXM2318BF300AA Service Manual page 91

Refrigerant piping work
1. Installing outdoor unit
1) When installing the outdoor unit, refer to "Precautions for Selecting the Location" and the "Indoor/Outdoor Unit
Installation Drawings".
2) If drain work is necessary, follow the procedures below.
2. Drain work
1) Use drain plug for drainage.
2) If the drain port is covered by a mounting base or floor surface, place additional foot bases of at least 30mm in
height under the outdoor unit's feet.
3) In cold areas, do not use a drain hose with the outdoor unit.(Otherwise, drain water may freeze, impairing
heating performance.)
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