Carrier 40QSM009DS Service Manual page 24

Cassette Units(18K)
Liquid side Gas side
Body
65 Fresh air intake
75
Wiring connection port
Panel
Drain hole
( for Service )
E-parts box
4-Screw hole
(for install panel)
4-install hanger
545
570
32 Drain pipe
42
68
647
21
Wiring connection port
260
50