Drain Piping Work - Toshiba RAV-SM402MUT-E Installations-Handbuch

4

DRAIN PIPING WORK

CAUTION
• Install the drain piping so that the water
drains effectively.
• Apply heat insulation to prevent dew
condensation from forming.
• Incorrectly installed pipe work may result in
a water leak.
REQUIREMENT
• Ensure insulating of the drain pipes and connecting parts on the indoor units.
• The drain pipe should have a downward slope of at least 1/100 and ensure
there are no swells or blockages as this will cause abnormal sounds.
• The maximum traverse length of drain pipe is 20 m.
Provide support brackets at intervals of 1.5 to 2 m where necessary to
prevent movement.
• Install the combined piping as shown in the illustration.
• Do not create an air purge in the pipe work,
as the water would leak from this point.
• The hard vinyl-chloride pipe cannot be connected
directly to the drain pipe connecting port of the indoor unit.
For connection with the drain pipe connecting port,
ensure that the supplied flexible hose is fitted.
• Adhesive agent cannot be used for the pipe
connecting port (hard socket) on the indoor unit.
Be sure to use the supplied hose band for fixing,
otherwise there is a risk of damage or water
leakage from the drain pipe connecting port.
Connection of flexible hose
• Insert the soft socket of the supplied flexible hose
into the connecting port of the drain pipe.
• Align the supplied hose band to the pipe connecting
port end, and tighten.
Max
OK
Max
English-11
As long as possible (10cm)
VP25
(Collective pipes)
NO GOOD
45˚
Riser (Trap)
90˚ Bend
45˚
Pipe material/Insulator and size
The following materials for piping work and insulation are
to be procured locally.
Pipe material
Insulator
VP25
VP30 or more
Downward slope
1/100 or more
Drain pipe connecting port
(Hard socket)
Attached hose band Attached flexible hose
Soft socket
Adhesive agent prohibited
REQUIREMENT
• Fix the soft socket with the supplied hose band,
tighten at the upper position of the unit.
• The supplied flexible hose can bend up to a
maximum of 45°
Drain pipe
connecting port
(Transparent)
11
Hard vinyl chloride pipe socket for VP25
Hard vinyl chloride pipe VP25
(Outer diameter Ø32 mm)
Foamed polyethylene foam, thickness:
10 mm or more
1.5m to 2m
Heat
1/100 or more
insulator
downward
Arched
shape
Trap
VP25
VP25 vinyl chloride pipe
(Procured locally)
Socket for VP25
Hard socket
(Procured locally)
Align the attached hose band to the
end of hose, set the tightening
position upward, and then tighten it.
Flexible hose VP25 vinyl chloride pipe
(Accessory) (To be local procure)
Socket for VP25 vinyl chloride pipe
(To be local procure)
Support
bracket
NO
GOOD