Mitsubishi Electric MLZ-KA25VA Notice D'installation page 6

• Connect drain pipe (B) directly to drain piping connecting part (socket
side) of drain hose (2).
• Be sure to connect drain hose (2) to the indoor unit side as shown in
the illustration on the right. Be sure to connect the drain hose con-
necting part using adhesive of polyvinyl chloride family to prevent
leakage.
• To bring up the drain exit, first arrange drain hose (2) to go upward
vertically, and then provide 1/100 or more downward slope, as shown
in the illustration below.
Drain piping connecting part
Drain hose (2)
Drain hose
connecting part
61 mm
• If the drain piping pass indoor, be sure to apply insulating material (I)
(Foamed polyethylene, specific gravity 0.03, thickness more than 10
mm).
Connect drain hose connecting part using adhesive of polyvinyl chlo-
ride family before installing the hose band.
• Apply insulating material (I) until drain piping connecting part, as
shown 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 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 10 cm lower than the unit drain exit, as shown in the figure.
Use about VP 30 piping 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.
En-
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Drain pipe (B)
Pipe elbow
Drain hose (2)
1/100 or more
downward slope
* Drain hose (2) can be cut
by tools such as cutters
Ceiling
Drain hose (2)
Drain hose connecting part
61 mm
Drain piping connecting part
Drain pipe (B)
Drain hose (2)
Drain piping
connecting part
About 50 mm
from the end
* Do not make drain
piping as shown.
• Insert the drain pipe (B) completely into drain
piping connecting part.
• Apply insulating material (I) until drain piping
connecting part, as shown above.
Ceiling
Hose band
0.75 m to 1.5 m
Support metal
Insulating
material (I)
As much as possible
(about 10 cm)
1/100 or more downward slope
Air bleeder
Do not raise
Odor trap
As long as possible
As short as possible
(about 10 cm)
Drain piping connecting part (with socket)
Drain pipe (B)
1/100 or more downward slope
Insulating material (I)
Drain pipe (B)
Tip of drain hose
dipped in water
At least 50 mm
gap
1/100 or more
downward slope
VP30