Toshiba RAS-09 12EA Series Installation Manual Download

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OUTDOOR UNIT

Installation Location

CAUTION

Align the centers of the connecting pipes and tighten the

are nut as far as

possible with your

ngers. Then tighten the nut with a two wrenches as show

below.

Tightening connection

Do not apply excess torque. Otherwise, the nut may crack depending on
the conditions.

Outer dia. of copper pipe

Tightening torque

Ø1/4 in. (Ø6.35 mm)

10 to 13 lbf.ft (14 to 18 N·m)

Ø1/2 in. (Ø12.70 mm)

37 to 46 lbf.ft (50 to 62 N·m)

Half union

Flare nut

Externally
threaded side

Internally
threaded side

Use a wrench to secure.

Use a torque wrench to tighten.

• A location which provides enough spaces around the outdoor unit as

shown in the diagram above.

• A location which can bear the weight of the outdoor unit and does not

allow an increase in noise level and vibration.

• A location where the operation noise and discharged air do not disturb

your neighbors.

•  A location which does not expose the unit to strong winds.
•  A location free of combustible gases leaks.
•  A location which does not block a passage.
•  A location where drain water does not cause any problems.
•  Depending on snow level, use a

eld fabricated ice or snow stand.

• When the outdoor unit is to be installed in an elevated position, be sure to

secure it as described in the section above.

CAUTION

1. Install the outdoor unit in a location where there are no obstructions

near its air intake or air outlet.

2. When the outdoor units is installed in a place that is always exposed

to strong winds like on the coast or on a high story of a building, use
a

eld fabricated wind baf

e. To minimize the effect of strong winds,

specially in windy areas, install the unit as shown below.

Strong
wind

Refrigerant Piping Connection

1. Make sure you have enough pipe to reach to the indoor unit.
2. Cut the pipe with a pipe cutter.

Flaring

Obliquity

Roughness

Warp

3. Insert a

are nut into the pipe and

are the pipe.

• Do not use the supplied drain nipple for draining water. Drain the water

from all drain holes directly.

• To protect the outdoor unit from snow accumulation, install a holding

frame, and attach a snow protection hood and plate.

* Do not use a double-stacked design.

Precautions about Installation in Regions

with Snowfall and Cold Temperatures

Snow protection plate

Snow protection hood

Snow accumulation line

Holding frame

At least
19-11/16 in. (500 mm)

Install the unit at least
19-11/16 in. (500 mm)
above the snow
accumulation line.

Anchor
bolts

Front

Wiring Connection

1. MOUNT THE OUTDOOR UNIT POWER DISCONNECT.
2. RUN POWER WIRING FROM MAIN BOX TO DISCONNECT PER NEC

AND LOCAL CODES.

3. Remove the valve cover and the cord clamp from the outdoor unit.
4. Fix conduit connector to conduit plate by lock nut and secure it tightly.

Connect the power supply and connecting cables to the terminal block as
shown in the

gure in the next page and secure it tightly with screws.

5.  You should not have extra cables.
6.  Secure the power cord and the connecting cable with the cord clamp.
7.  Attach the electric parts cover and the valve cover to the outdoor unit.
8.  RUN PIPING AND INTERCONNECTING CABLE TO THE INDOOR

UNIT.

All wiring and connections must comply with NEC, CEC, and local codes.
•  Connect all wires to the correct terminal on the wiring terminal blocks.
•  Make sure that all connectors are secure.
•  Size connectors per the ratings listed in the system requirement section.
•  System interconnections should be minimum AWG14.

NOTE

•

Tightening torque for connection of

are pipe

The pressure of R410A is higher than
R22. (Approx. 1.6 times.) Therefore
securely tighten the

are pipes

which connect the outdoor unit and
the indoor unit with the speci

tightening torque using a torque
wrench.

Flare at
indoor unit side

Flare at
outdoor unit side