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4.4. Installing heat insulation
• Install the coupler heat insulation after completing the refrigerant leak check (for details,
refer to the Installation Manual for the outdoor unit).
• There should be no gaps between the insulation and the product.
Cable tie (Large) (Accessories)
No gap
Cable tie (Large) (Accessories)
No gap
5. INSTALLING DRAIN PIPES
• Use general hard polyvinyl chloride pipe ø 3/4 in [I.D.], ø 1-1/16 in [O.D.] and connect it
with adhesive (polyvinyl chloride) so that there is no leakage.
• The position of the installed drain pipe should have a downward gradient of 1/100 or
more.
• To prevent the pipe from freezing, use a heat insulation material as needed.
Position of drain piping
ARUH 72
7-7/8 (200)
Safety drain port
Main drain port
Ø 3/4 (19) [I.D.]
Ø 1-1/16 (27) [O.D.]
ARUH 96
7-7/8 (200)
Safety drain port
Main drain port
Ø 3/4 (19) [I.D.]
Ø 1-1/16 (27) [O.D.]
Drain pipe
• For main drain port
• For safety drain port
• This product has drain ports in 2 locations. Follow the procedure in the fi gure to connect
drain hose and drain pipes to each of them.
Coupler heat insulation (Small)
(Accessories)
Coupler heat insulation (Large)
(Accessories)
Unit : in (mm)
1-9/16 (40)
Unit : in (mm)
1-9/16 (40)
O.D.
Φ 3/4 in (19 mm) [I.D.],
Φ 1-1/16 in (27 mm) [O.D.]
Install the drain hose to the main and safety drain port
Working procedure
(1) Install the attached drain hose to the main and safety drain port of the body. Install
the hose band from the top of the hose within the graphic display area. Secure fi rmly
with the hose band.
(2) Use vinyl adhesive agent to glue the drain piping (PVC pipe) [Φ 3/4 in (19 mm) I.D.
Φ 1-1/16 in (27 mm) O.D.] which is prepared on site or piping socket. (Apply color
adhesive agent evenly until the gauge line and seal)
(3) Check the drainage.
(4) Install the heat insulation.
(5) Use the attached heat insulation to insulate the drain port and band parts of the body.
Drain hose
For main drain port
(Large)
Drain hose
For safety drain port
(Small)
Drain pan
3/8 to 9/16 in
(10 to 15 mm)
Applying
area of
Joint pipe
Hard PVC side
adhesive
(Locally purchased)
Drain pipe (Locally purchased)
Φ 3/4 in (19 mm) [I.D.], Φ 1-1/16 in (27 mm) [O.D.]
0.16 in (4 mm) or less
Wrap the Drain hose insulation around the drain hose connection.
Drain pan
3-15/16 in
(100 mm)
Hose opening view
Wind the attached heat insulation
around the hose band. Make sure
the alignment is on top.
After installing the Drain hose, check if the drainage is smooth.
GOOD
Accessories
Hose band
Drain hose
(Large)
insulation
Hose band
Drain hose
(Small)
insulation
Ensure there is no space
Hose band
(Accessories)
Soft PVC side
Drain hose
(Accessories)
Drain hose insulation
(Accessories)
Drain hose
Downward gradient
0.10 to 0.19 in
(2.5 to 5.0 mm)
PROHIBITED
En-6
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