Samsung AHU Series Service Manual page 11

No Parts
3 DRAIN PAN 1) Loosen 11 of the front screw(CCW) and
2) Loosen 2 of the Left side screw(CCW).
3) Loosen 5 of the front screw(CCW) and
4) Pull the Heat Exchanger and Drain.
5) Detach the Drain from indoor Unit.
Samsung Electronics
All manuals and user guides at all-guides.com
Procedure
detach the Cabinet Front Down.
detach the 2 Bracket drain and 1 Bracket
Low
Disassembly and Reassembly
Remark
3-3