Daikin FDMQ09RVJU Installation Manual page 11

CAUTION
• To avoid the attached drain hose (2) getting excessive
force, do not bend nor twist it.
It may cause water leakage.
• As for drain piping connection, do not connect the drain
hose directly to a sewage that gives off ammonia odor.
(The ammonia in the sewage may go through the drain
piping and corrode the heat exchanger of the indoor unit.)
• In case of centralized drain piping, carry out piping work
according to the procedure shown in the fol lowing Fig. 16.
Centralized drain piping
Make a downward inclination of 1/100 or
more to avoid stagnation of air.
If water stagnates in the drain
piping, it may cause clogging of
drain piping.
Fig. 16
• As for the size of centralized drain piping, select the size
that meets the capacity of indoor units to be con nected.
(Refer to the technical document)
• Positioning the upward drain piping at an angle may cause
float switch malfunction and lead to water leakage.
• While replacing with new indoor unit, use the attached
new drain hose (2) and the clamp metal (1).
If an old drain hose or a clamp metal is used, it may
cause water leakage.
(2) After piping work is finished, check if drainage flows
smoothly.
[When the electric wiring work is finished]
• Gradually pour 1/4 gal of water from the inspection
port at the bottom of the drain socket on the left side
of the drain socket into the drain pan giving caution to
avoid splashing water on the electric components such
as drain pump and confirm drainage by operating the
indoor unit under cooling mode according to
10. FIELD SETTING. (Refer to Fig. 17)
Electrical wiring box
Drain socket
Filling port
Drain pan
Air outlet
Socket for Access
maintenance window
(with rubber cap)
Plastic container
for pouring water
[Method of adding water]
Fig. 17
[When the electric wiring work is not finished]
• The electric wiring works (including grounding) must be
carried out by a qualified electrician.
English
Electrical wiring
box cover
Terminal block
for wiring between
the indoor and
outdoor units
Screw
Drain pump
position
• If a qualified person is not present, after the electric
wiring work is finished, check the drainage accord i ng
to the method specified in [When the electric wiring
work is finished].
1. Open the electrical wiring box cover and connect the
ground wiring to the ground terminal.
2. Make sure the electrical wiring box cover is closed
before turning on the power supply.
• Throughout the whole process, carry out the work
giving caution to the wiring around the electrical
wiring box so that the connectors may not come
off.
3. Gradually pour 1 litre of water from the air outlet on
the left side of the drain socket into the drain pan
giving caution to avoid splashing water on the electric
components such as drain pump. (Refer to Fig. 17)
4. When the power supply is turned on, the drain
pump will operate. Drainage can be checked at the
transparent part of the drain socket.
(The drain pump will automatically stop after 10
minutes.)
The drainage of water can be confirmed with water level
change in the drain pan through the access window.
• Do not connect the drain piping directly to the
sewage that gives off ammonia odor.
The ammonia in the sewage may go through the
drain piping and corrode the heat exchanger of the
indoor unit.
• Do not apply external force to the float switch. (It
may result in malfunction)
• Do not touch the drain pump.
Touching the drain pump may cause electric shock.
5. Turn off the power supply after checking drainage,
and remove the power supply wiring.
6. Attach the electrical wiring box cover as before.
(3) Sweating may occur and result in water leakage.
Therefore, make sure to insulate the following
2 locations (drain piping that laid indoors and drain
sockets).
• Use the provided sealing pad (large) (6), and perform
the thermal insulation of the clamp metal (1) and drain
hose (2) after checking the drainage of water. (Refer to
Fig. 18)
Sealing pad (Large) (6)
No clearance is
allowed.
Sealing pad (Large) (6)
Drain hose (2)
Start wrapping from where the
clamp metal (1) is tightened.
Wrap the sealing pad (Large) (6) so that
the clamp metal (1) end side may be
doubled.
Fig. 18
Unit
Clamp metal (1)
10