49
S4179544
7
7
7
7
7
D
9
9
9
9
9
FM
8
8
8
8
8
F
3-32.
Installing the Drain Piping
(1) Prepare a standard hard PVC pipe (O.D. 32 mm)
for the drain and use the supplied drain socket to
prevent water leaks. The PVC pipe must be
purchased separately.
When doing this, apply the adhesive for the PVC
pipe at the connection point.
(2) After connecting the drain pipe securely, wrap the
insulator (field supply) around the pipe.
(3) Ensure the drain pipe has a downward gradient (1/
100 or more) and prepare traps as indicated in
Fig. 3-102.
(4) Also, in another part of the pipe arrangement,
prepare traps with an inspection plug to clean dust
which may cause leaking of water. (Fig. 3-103)
(5) After the drain piping, slowly pour water into the
drain pan to check that the water drains smoothly.
Fig. 3-101
Fig. 3-102
Fig. 3-103
Air-outlet grille
Air-intake grille
0791 _D_I
Good
Min. 1/100
0792_T_I
Not good
Min. 50 mm
Inspection plug
0114_D_I
Min.
100 mm
