Drain Piping - Toshiba RAV-GM901UTP-E Manual Del Usuario

5

Drain piping

CAUTION
Following the Installation Manual, perform the drain
piping work so that water is properly drained, and
apply a heat insulation so as not to cause a dew
dropping.
Inappropriate piping work may result in water
leakage in the room and wet of furniture.
 Piping / Heat insulating
material
Require the following materials for piping and heat
insulating at site.
Hard vinyl chloride pipe VP25
Piping
(Outer dia. : Ø32 mm)
Foam polyethylene :
Heat insulator
Thickness 10 mm or more
 Flexible hose
Use the attached flexible hose to adjust center
discrepancy of the hard vinyl chloride pipe or to adjust
the angle.
Do not use the flexible hose as stretched, or do not
•
deform it more extent than that in the following figure.
Be sure to fix the soft end of the flexible hose with the
•
attached hose band.
Use the flexible hose on a horizontal level.
•
OK NO GOOD
Riser (Trap)
max
45°
max
45°
90° Bend
REQUIREMENT
Be sure to perform heat insulation of the drain pipes
•
of the indoor unit.
Never forget to perform heat insulation of the
•
connecting part with the indoor unit.
An incomplete heat insulation causes dew dropping.
Set the drain pipe with downward slope (1/100 or
•
more), and do not make swelling or trap on the
piping. It may cause an abnormal sound.
1.5 m to 2 m Support
bracket
1/100 or more
Heat insulator
downward
111-EN
For length of the traversing drain pipe, restrict to 20
•
m or less.
In case of a long pipe, provide support brackets with
interval of 1.5 to 2 m in order to prevent waving.
Arched
NO
shape
GOOD
Trap
Set the collective piping as shown in the below figure.
•
As long as possible (10 cm)
VP25 VP25 VP25
VP30 or more Downward slope
1/100 or more
Be sure not to apply force to the connecting part of
•
the drain pipe.
The hard vinyl-chloride pipe cannot be directly
•
connected to the drain pipe connecting port of the
indoor unit.
For connection with the drain pipe connecting port,
be sure to use / fix the attached flexible hose with
the hose band, otherwise a damage or water leak is
caused on the drain pipe connecting port.
Attached hose VP25 vinyl chloride pipe
Drain pipe
band (Locally procured)
connecting port
Attached flexible hose
(Hard socket)
Socket for VP25
Soft socket
(Locally procured)
Hard socket
Adhesive inhibited :
Use the attached flexible hose and hose band for
connecting the drain hose to the clear drain socket.
If applying the adhesive, socket will be damaged and
cause water leakage
5 mm or less 10 to 12 mm
hose band tightening
margin
Drain pipe
connecting port
(Transparent) VP25 vinyl chloride
pipe
(Locally procured)
10 mm
Flexible hose Socket for VP25 vinyl
Heat
(Accessory) chloride pipe
insulator
(Locally procured)
 Connecting drain pipe
Connect a hard socket (locally procured) to the hard
•
socket of the attached supplied flexible hose.
Connect a drain pipe (locally procured) to the
•
connected hard socket.
REQUIREMENT
Connect hard vinyl chloride pipes securely using an
•
adhesive for vinyl chloride to avoid water leakage.
It takes some time until the adhesive is dried and
•
hardened (refer to the manual of the adhesive).
Do not apply stress to the joint with the drain pipe
during this time period.
 Drain up
When a down-gradient cannot be secured for the
drainpipe, drain-up piping is possible.
The height of the drain pipe must be 850 mm or less
•
from the bottom of the ceiling.
Take the drain pipe out of the drain pipe joint with the
•
indoor unit in 300 mm or less, and bend up the pipe
vertically.
Immediately after the pipe is bent up vertically, lay the
•
pipe making a down-gradient.
Set downward grading immediately after raising up
•
vertically.
300 mm
or less
Indoor unit
Underside of ceiling
– 56 –
 Check the draining
In the test run, check that water drain is properly
performed and water does not leak from the
connecting part of the pipes.
Be sure to check draining also when installed in
heating period.
Using a pitcher or hose, pour water (1500 to 2000 cc)
into the discharge port before installation of the ceiling
panel.
Pour water gradually so that water does not spread on
the motor of the drain pump.
CAUTION
Pour water gently so that it does not spread around
inside the indoor unit, which may cause a malfunction.
Heat
exchanger
Float switch
connector (3P)
(CN34: red)
Drain pan
Power supply
wiring
Tool for
pouring
Insert the hose end between the heat
water
exchanger and the drain pan, and then
bend the hose downward.
Bottle
Water (1500 cc to 2000 cc)
After the electric work has finished, pour water during
•
COOL mode operation.
If the electric work has not yet finished, pull out
•
the float switch connector (CN34 : Red) from the
electrical control box, and check draining by plugging
the single phase 220-240V power to the terminal
blocks 1 and 2.
If doing so, the drain pump motor operates.
(Never apply 220-240V to or , otherwise a
A B
trouble of P.C. board occurs.)
EN
112-EN