Toshiba Carrier RAS-15 Installation Manual Download Page 13

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Drainage

1. Run the drain hose slopping downward.

NOTE

• The hole should be made at a slight downward slant on the outdoor side.
• The drain is internally trapped. An external trap is not required.

Do not rise the
drain hose.

Do not form the
drain hose into
a wavy shape.

2 in.
(50 mm)
or more

Do not put the
drain hose end
into water.

Do not put the
drain hose end
in the drainage ditch.

2. Put water in the drain pan and make sure that the water is drained out.
3. When connecting an extension drain hose, insulate it with shield pipe.

Shield pipe

Drain hose

Extension drain hose

Inside the room

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.

CAUTION

Wall

Drain
guide

Space for pipes

Remote control

• Place the remote control away from obstacles (such as curtain) that may

block the signal coming from the remote control.

• Do not install the remote control in a place exposed to direct sunlight or

close to a heating source such as a stove.

• Keep the remote control at least 3.3 ft (1 m) apart from the nearest TV set

or stereo equipment. (This is necessary to prevent image disturbances or
noise interference.)

• The location of the remote control should be determined as shown below.

Indoor unit

(Side view)

(Top view)

Indoor unit

Remote
control

Reception
range

Reception range

Remote Control A-B Selection

In case of two systems operating nearby, follow the instructions below to set
the remote control to operate with one indoor unit at a time.

Remote Control B Setup.

  1. Press RESET button on the indoor unit to turn the air conditioner ON.
  2. Point the remote control at the indoor unit.
  3. Push and hold CHK

●

button on the Remote Control with the tip of a

pencil. “00” will be shown on the display.

Press

MODE

while pushing CHK

●

. “B” will show on the display and

“00” will disappear and the air conditioner will turn OFF. B is now
memorized.

Note:

1. Repeat above step to reset Remote Control back to A.

2. Remote Control does not display “A”.

3. Default setting of Remote Control from factory is A.

“B” Display

“00” Display

Evacuating

After the piping has been connected to the indoor unit, you vacuum both
units at once.

Be sure to use a vacuum pump with counter-

ow prevention function so

that inside oil of the pump does not

ow backward into pipes of the air

conditioner when the pump stops.
(If oil inside of the vacuum pump enters the air conditioner, which uses
R410A, refrigeration cycle trouble may happen.)
1. Connect the charge hose from the manifold valve to the service port of

the packed valve at the gas side.

2.  Connect the charge hose to the port of the vacuum pump.
3.  Open fully the low pressure side handle of the manifold valve gauge.
4.  Operate the vacuum pump to start evacuating. Perform evacuation for

about 15 minutes if the piping length is 66 feet (20 m). (assuming a
pump capacity of 27 liters per minute) Then con

rm that the compound

pressure gauge reading is –101 kPa (–76 cmHg).

Using a vacuum pump

Evacuate the air in the connecting pipes and in the indoor unit using a
vacuum pump. Do not re-use the refrigerant in the outdoor unit. For details,
see the vacuum pump manual.

VACUUMING

EVACUATING

Packed valve at
liquid side

Service port (Valve core
(Setting pin))

Packed valve at gas side

Vacuum

pump

Vacuum pump adapter for
counter-

ow prevention

(For R410A only)

Charge hose
(For R410A only)

Handle Hi
(Keep full closed)