Indoor Unit Fixing; Drainage; Refrigerant Piping - Toshiba RAV-SM307KRTP-E Installation Manual

Gas side
Heat insulator provided
A
10 A
Indoor unit shield pipe
Liquid side
Cut the heat insulator of the gas pipe
(locally procured) leaving a 10 mm
overlap with the shield of the shield pipe.
Heat insulator wrapping cross section A-A
Make the slit part of heat insulator to upward.
▼ Insulating the pipes
Insulate the indoor unit completely so there are no
gaps using the heat insulator provided.
CAUTION
Securely apply insulation all the way up to the pipe
connecting section of the indoor unit so that there is
no exposed area. (the pipe exposed to the outside
causes water leak.)
When wrapping the heat insulator around pipes,
make sure the slit aperture toward the ceiling surface.
CAUTION
• Bind the auxiliary pipes (two) and system
interconnection wire and control wiring with facing
tape tightly. In case of leftward piping and rear
leftward piping, bind the auxiliary pipes (two) only
with facing tape.
Indoor unit
System interconnection wire
Auxiliary
pipes
Wired remote controller
Installation plate
wiring
•
Carefully arrange pipes so that any pipe does not
stick out of the rear plate of the indoor unit.
•
Carefully connect the auxiliary pipes and
connecting pipes to one another and cut off the
insulating tape wound on the connecting pipe to
avoid double-taping at the joint, moreover, seal the
joint with the vinyl tape, etc.
•
Since dew results in a machine trouble, make sure
to insulate both the connecting pipes.
(Use polyethylene foam as insulating material.)
•
When bending a pipe, carefully do it, not to crush it.
15-EN
7
Indoor unit fi xing
1
Pass the pipe through the hole in the wall,
and hook the indoor unit on the installation
plate at the upper hooks.
2
Swing the indoor unit to right and left to
confirm that it is firmly hooked up on the
installation plate.
3
While pressing the indoor unit onto the
wall, hook it at the lower part on the
installation plate. Pull the indoor unit
toward you to confirm that it is firmly
hooked up on the installation plate.
Hook here
1
Installation plate
2
Hook
Press
(unhook)
For detaching the indoor unit from the installation
plate, pull the indoor unit toward you while
pushing its bottom up at the specified parts.
Push Push
8

Drainage

1
Run the drain hose sloped downwards.
NOTE
Hole should be made at a slight downward slant on
the outdoor side.
2
Put water in the drain pan and make sure
that the water is drained out of doors.
3
When connecting extension drain hose,
insulate the connecting part of extension
drain hose with shield pipe.
Do not form the drain hose
Do not rise the drain hose.
into a wavy shape.
50 mm
or more
Do not put the
drain hose end
into water.
Shield pipe
Extension drain hose
Inside the
Drain hose
room
CAUTION
Arrange the drain pipe for proper drainage from the
unit.
Improper drainage can result in dew-dropping.
This air conditioner has the structure designed to drain
water collected from dew, which forms on the back of
the indoor unit, to the drain pan.
Therefore, do not store the power cord and other parts
at a height above the drain guide.
Wall
Drain guide
Space for pipes
– 8 –
9

Refrigerant piping

CAUTION
When the refrigerant pipe is long, provide support
brackets at intervals of 2.5 m to 3 m to clamp the
refrigerant pipe. Otherwise, abnormal sound may be
generated.
Use the fl are nut attached with the indoor unit or
R410A fl are nut.
■ Permissible piping length and
height difference
They vary depending on the outdoor unit. For details,
refer to the Installation Manual attached to the outdoor
unit.
■ Pipe size
Do not put the
drain hose end
Pipe size (mm)
in the drainage
Model: RAV-
ditch.
Gas side
SM30 Ø9.52
SM40 Ø12.70
■ Connecting refrigerant piping
Flaring
1
Cut the pipe with a pipe cutter.
Remove burrs completely. (remaining burrs
may cause gas leakage.)
2
Insert a flare nut into the pipe, and flare the
pipe.
Use the flare nut provided with the unit or
the one used for the R410A refrigerant. The
flaring dimensions for R410A are different
from the ones used for the conventional R22
refrigerant. A new flare tool manufactured
for use with the R410A refrigerant is
recommended, but the conventional tool can
still be used if the projection margin of the
copper pipe is adjusted to be as shown in the
following table.
Liquid side
Ø6.35
Ø6.35
16-EN