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• Connect drain pipe
directly to drain piping connecting part (socket
B
side) of drain hose
.
• Be sure to connect drain hose
to the indoor unit side as shown in the
illustration on the right. Be sure to connect the drain hose connecting
part using adhesive of polyvinyl chloride family to prevent leakage.
• To bring up the drain exit, first arrange drain hose
vertically, and then provide 1/100 or more downward slope, as shown
in the illustration below.
Drain piping connecting part
Drain hose
Drain hose
connecting part
* Drain hose
tools such as cutters.
2-3/8 in.
(61 mm)
• If the drain piping pass indoor, be sure to apply insulating material
(Foamed polyethylene, specific gravity 0.03, thickness more than 3/8 in.
(10 mm)).
Connect drain hose connecting part using adhesive of polyvinyl chloride
family before installing the hose band.
• Apply insulating material
until drain piping connecting part, as shown
J
in the upper right illustration.
• Drain piping should form a downward slope (1/100 or more) to the outdoor
drain exit. Do not form trap or raise the pipe.
• Do not arrange the pipe horizontally for more than 65 ft. (20 m). When
the drain piping is too long, use support metal to prevent the drain pipe
from forming an up or down curve. Be sure not to install a air bleeder.
(Since drain lift-up mechanism is built-in, drain may blow out.)
• Odor trap for drain outlet is not necessary.
• For grouped piping, arrange piping so that the grouped piping is about
3-15/16 in. (100 mm) lower than the unit drain exit, as shown in the figure.
Use about a drain pipe (O.D. 1-1/2 in. (38 mm)) for grouped piping, and
arrange it so that it forms about 1/100 or more downward slope.
• Do not place drain piping directly into a place where ammonia gas or
sulfuric gas is formed, such as sewage tanks or septic tanks.
to go upward
Drain pipe
B
Pipe elbow
Drain hose
1/100 or more
downward slope
can be cut by
Ceiling
J
Drain hose
Drain hose connecting part
2-3/8 in.
(61 mm)
Drain piping connecting part
Drain pipe
B
Drain hose
Drain piping con-
necting part
About 2-3/8 in. (60
mm) from the end
* Do not make drain
piping as shown.
• Insert the drain pipe
piping connecting part.
• Apply insulating material
connecting part, as shown above.
Ceiling
Hose band
2 to 5 ft.
(0.75 m to 1.5 m)
Support metal
Insulating
material
J
As much as possible
(about 4 in. (100 mm))
1/100 or more downward slope
Air bleeder
Do not raise
Odor trap
As long as possible
As short as possible
(about 4 in. (100 mm))
Drain piping connecting part (with socket)
Drain pipe
B
1/100 or more downward slope
Insulating material
J
Drain pipe
B
completely into drain
B
until drain piping
J
Tip of drain hose
dipped in water
At least 2 in.
(50 mm) gap
1/100 or more
downward slope
Drain pipe
(O.D. 1-1/2 in. (38 mm))
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