Daikin FXHQ12MVJU, Installation Manual

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• When piping is complete, cut the removed penetration lid into
the shape of the pipe using scissors and attach.
As when before removing the top penetration lid, secure the
lead lines for the swing motor and thermistor by passing them
through the clamp section on the top penetration lid.
(Refer to Fig. 18, 20)
• When doing this, block any gaps between the pipe penetra-
tion lid and the pipes using putty to prevent dust from enter-
ing the indoor unit.
7. DRAIN PIPING WORK
(1) Carry out the drain piping.
• Make sure piping provides proper drainage.
• You can select whether to bring the drain piping out from the
rear right or right. For rear right-facing and right-facing situa-
tions, refer to “6. REFRIGERANT PIPING WORK” on page 7.
• Make sure the pipe diameter is the same or bigger than the
branch piping. (vinyl-chloride piping, nominal diameter 1 in.,
external diameter 1 1/4 in.)
• Make sure the piping is short, has at least a 1/100 slope, and
can prevent air pockets from forming. (Refer to Fig. 21)
• Do not allow any slack to gather in the drain pipe inside the
indoor unit.
(Slack in the drain pipe can cause the suction grille to break.
)
CAUTION
• Water accumulating in the drain piping can cause the drain to
clog.
• Be sure to use the drain pipe (1) and metal clamp (2).
Also, insert the drain pipe completely into the drain socket, and
securely attach the metal clamp bracket inside the gray tape
area on the inserted tip of the drain pipe.
(Refer to Fig. 22)
Screw the screws on the metal clamp bracket until there is 5/
32 in. left. (Pay attention to the direction of the attachment to
prevent the metal clamp bracket from coming into contact
with the suction grille.)
(Refer to Fig. 23)
• Insulate the metal clamp bracket and drain pipe from the bot-
tom using the large sealing pad (8). (Refer to Fig. 23)
• Be sure to insulate all drain piping running indoors.
NOTE
• To ensure no excessive pressure is applied to the drain pipe
(1), do not bend or twist when installing. (This may cause
leakage.)
• If converging multiple drain pipes, install according to the pro-
cedure shown below.
Select converging drain pipes whose gauge is suitable for the
operating capacity of the unit.
Top plate
Top penetration lid
Cut out
Fig. 18 (A figure from an inside bottom)
This hole not using it.
Fig. 19
Upward-facing
refrigerant pipe
L-shaped branch pipe
kit (Optional accessories)
Top penetration
lid clamp section
Thermistor lead line
Swing motor
lead line
Fig. 20 (A figure from an inside bottom)
Tilt down
Do not lift Make sure there
is no slack
Make sure it is
not in the water
Good
Wrong
Fig. 21
Taping area (Gray) Drain pipe (1)
Metal clamp (2)
Fig. 22
Large sealing pad (8)
Metal clamp (2)
< Facing rear right or right >
5/32 or less
Fig. 23
(Length : in.)
3 7/8 or more
T-joint converging drain pipes
Slope downwards at a gradient
of at least 1/100
(Length : in.)