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12 Unit installation
Not allowed
▪ Condensation. Take measures against condensation. Insulate
the complete drain piping in the building.
▪ Rising piping. If necessary to make the slope possible, you can
install rising piping.
▪ Drain hose inclination: 0~75 mm to avoid stress on the piping
and to avoid air bubbles.
▪ Rising piping: ≤300 mm from the unit, ≤675 mm perpendicular
to the unit.
≤300
a
b
a
Metal clamp (accessory)
b
Drain hose (accessory)
c
Rising drain piping (vinyl pipe of 25 mm nominal diameter
and 32 mm outer diameter) (field supply)
d
Hanging bars (field supply)
▪ Combining drain pipes. You can combine drain pipes. Make
sure to use drain pipes and T-joints with the correct gauge for the
operating capacity of the units.
a
T-joint
To connect the drain piping to the indoor unit
NOTICE
Incorrect connection of the drain hose might cause leaks,
and damage the installation space and surroundings.
a
b
c
a
Drain outlet for maintenance
b
Drain pipe connection
c
Refrigerant pipes
Drain piping connection
1 Push the drain hose as far as possible over the drain pipe
connection.
2 Wrap the vinyl tape around the drain hose under the metal
clamp, ensuring it encircles the hose 2 or 3 times. The tape
should extend beyond the width of the metal clamp for proper
coverage.
3 Tighten the metal clamp until the screw head is less than 4 mm
from the metal clamp part.
4 Check for water leaks (see
Installation and operation manual
14
1000~1500
c
d
d
(mm)
a
(mm)
leaks" [ 4 14]).
"To check for water
5 Wind the large sealing pad (= insulation) around the metal
clamp and drain hose, and fix it with tie wraps. Start wrapping
from the tightened part of the metal clamp so that the end of the
metal clamp is wrapped twice.
6 Connect the drain piping to the drain hose.
1
2~6
d
3
2
1
a
b
c
4
a
Drain pipe connection (attached to the unit)
b
Vinyl tape
c
Drain hose (accessory)
d
Metal clamp (accessory)
e
Large sealing pad (accessory)
f
Drain piping (field supply)
Drain outlet for maintenance
Pull out the plug.
▪ Do NOT wiggle the plug up and down.
a
Push in the plug.
▪ Set the plug and push it in using a Phillips screwdriver.
a
b
a
Drain plug
b
Philips screwdriver
To check for water leaks
The procedure differs depending on whether installation of the
system is already completed. When installation of the system is not
yet completed, temporarily connect the user interface and power
supply to the unit.
When installation of the system is not yet completed
1 Temporarily connect electrical wiring.
▪ Remove the service cover. See
electrical wiring to the indoor
▪ Connect the user interface (b).
▪ Connect the power supply (a).
▪ Reattach the service cover. See
electrical wiring to the indoor
e
f
5
6
A
A
A' A'
≤4 mm
e
d
A-A'
b
a
"14.2 To connect the
unit" [ 4 16].
"14.2 To connect the
unit" [ 4 16].
FXKQ-A
VRV system air conditioner
3P747532-1A – 2023.11
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