Toshiba 18UFV-E1 Manuel d'installation - Page 11

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• Tightening torque for connection of ﬂ are pipe

The pressure of R410A is higher than R22

(Approx. 1.6 times). Therefore securely

tighten the ﬂ are pipes which connect the

outdoor unit and the indoor unit with the

speciﬁ ed tightening torque using a torque

wrench. If any ﬂ are pipe is incorrectly

connected, it may cause not only

a gas leakage but also trouble in the

refrigeration cycle.

Evacuating

After the piping has been connected to the indoor unit, you can perform

vacuuming together at once.

VACUUMING

Evacuate the air in the connecting pipes and in the indoor unit using a

vacuum pump. Do not use the refrigerant in the outdoor unit. For details,

see the manual of the vacuum pump.

Using a vacuum pump

Be sure to use a vacuum pump with counter-ﬂ ow prevention function so

that inside oil of the pump does not ﬂ ow backward into pipes of the air

conditioner when the pump stops.

(If oil inside of the vacuum pump enters the air conditioner, which use

R410A, refrigeration cycle trouble may happen.)

1. Connect the charge hose from the manifold valve to the service port of the

packed valve at gas side.

2. Connect the charge hose to the port of the vacuum pump.

3. Open fully the low pressure side handle of the gauge manifold valve.

4. Operate the vacuum pump to start evacuating. Perform evacuating for

about 15 minutes if the piping length is 20 meters (15 minutes for 20

meters) (assuming a pump capacity of 27 liters per minute). Then conﬁ rm

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

5. Close the low pressure side valve handle of the gauge manifold valve.

6. Open fully the valve stem of the packed valves (both gas and liquid

sides).

7. Remove the charging hose from the service port.

8. Securely tighten the caps on the packed valves.

Compound pressure gauge

–101 kPa (–76 cmHg)

Handle Lo

Charge hose

(For R410A only)

Connecting pipe

Packed valve at gas side

Service port (Valve core (Setting pin))

Packed valve at liquid side

CAUTION

• KEEP IMPORTANT 5 POINTS FOR PIPING WORK.

(1) Take away dust and moisture (inside of the connecting pipes).

(2) Tighten the connections (between pipes and unit).

(3) Evacuate the air in the connecting pipes using a VACUUM PUMP.

(4) Check gas leak (connected points).

(5) Be sure to fully open the packed valves before operation.

Packed valve handling precautions

• Open the valve stem until it touches the stopper. Once it is in contact with

the stopper, refrain from applying any more force than is necessary.

• Securely tighten the valve stem cap with torque in the following table:

Flare at

indoor unit side

Flare at

outdoor unit side

Pressure gauge

Manifold valve

Handle Hi

(Keep full closed)

Charge hose

(For R410A only)

Vacuum pump adapter for

counter-ﬂ ow prevention

(For R410A only)

Vacuum

pump

Gas side

50 to 62 N·m

(∅12.70 mm)

(5.0 to 6.2 kgf·m)

Gas side

33 to 42 N·m

(∅9.52 mm)

(3.3 to 4.2 kgf·m)

Liquid side

14 to 18 N·m

(∅6.35 mm)

(1.4 to 1.8 kgf·m)

14 to 18 N·m

Service port

(1.4 to 1.8 kgf·m)

Wiring Connection

1. Remove the valve cover, the electric parts cover and the cord clamp from

the outdoor unit.

2. Connect the connecting cable to the terminal as identiﬁ ed by the matching

numbers on the terminal block of indoor and outdoor unit.

3. Insert the power cord and the connecting cable fully into the terminal

block and secure it tightly with screws.

4. Use vinyl tape, etc. to insulate the cords which are not going to be used.

Locate them so that they do not touch any electrical or metal parts.

5. Secure the power cord and the connecting cable with the cord clamp.

6. Attach the electric parts cover and the valve cover on the outdoor unit.

Electrical Work

1. The supply voltage must be the same as the rated voltage of the air

conditioner.

2. Prepare the power source for exclusive use with the air conditioner.

RAS-(B)10UFV

Model

series

220–240V ~ 50Hz

Power source

220–230V ~ 60Hz

Maximum running

8.5A

current

Plug socket & fuse

rating

Power cord

H07RN-F or 60245 IEC66 (1.5 mm

Connecting cable

H07RN-F or 60245 IEC66 (1.0 mm

X When using a multi-system outdoor unit is used, refer to the installation

manual provided with the model concerned.

Stripping length of the connecting cable

Terminal

block

Connecting cable

Power cord

RAS-10SAVR-A, RAS-18SAV-E

Terminal

block

Connecting cable

Power cord

CAUTION

• Wrong wiring connection may cause some electrical parts burn out.

• Be sure to comply with local rule on running the wire from indoor unit

to outdoor unit (size of wire and wiring method, etc.).

• Every wire must be connected ﬁ rmly.

• If incorrect or incomplete wiring is carried out, it will cause an ignition

or smoke.

• Prepare the power supply for exclusive use with the air conditioner.

• This product can be connected to the mains.

Connection to ﬁ xed wiring : A switch which disconnects all poles and

has a contact separation of at least 3 mm must be incorporated in the

ﬁ xed wiring.

Hexagon wrench

is required.

RAS-(B)13UFV

RAS-(B)18UFV

series

220–240V ~ 50Hz

220–230V ~ 60Hz

11.0A

12.0A

16A

or more)

1 2 3

L N

Earth line

Connecting cable

Power cord

1 2 3

L N

Earth line

Connecting cable

Power cord