Evacuating - Toshiba RAS-M14GAV-E Installation Manual

• 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:
Gas side
(∅12.70 mm)
Gas side
(∅9.52 mm)
Flare at Liquid side
indoor unit side (∅6.35 mm)
Service port
Flare at
outdoor unit side
1. Remove the valve cover, the electric parts cover and the cord clamp from
2. Connect the connecting cable to the terminal as identifi ed by the matching
3. Insert the power cord and the connecting cable fully into the terminal
4. Use vinyl tape, etc. to insulate the cords which are not going to be used.
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.
1. The supply voltage must be the same as the rated voltage of the air
2. Prepare the power source for exclusive use with the air conditioner.
X When using a multi-system outdoor unit is used, refer to the installation
Pressure gauge
Manifold valve
Handle Hi
(Keep full closed)
Terminal
Charge hose
block
(For R410A only)
Vacuum pump adapter for
counter-fl ow prevention
(For R410A only)
Vacuum
pump
RAS-10SAVR-A, RAS-18SAV-E
Terminal
block
8
50 to 62 N·m
(5.0 to 6.2 kgf·m)
33 to 42 N·m
(3.3 to 4.2 kgf·m)
14 to 18 N·m
(1.4 to 1.8 kgf·m)
14 to 18 N·m
(1.4 to 1.8 kgf·m)
Wiring Connection
the outdoor unit.
numbers on the terminal block of indoor and outdoor unit.
block and secure it tightly with screws.
Locate them so that they do not touch any electrical or metal parts.
Electrical Work
conditioner.
RAS-(B)10UFV RAS-(B)13UFV
Model
series
220–240V ~ 50Hz 220–240V ~ 50Hz
Power source
220–230V ~ 60Hz 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
manual provided with the model concerned.
Stripping length of the connecting cable
30
Connecting cable Power cord Connecting cable
1 2 3 L N
30
Connecting cable Power cord Connecting cable
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.
Toshiba 1112150201 (EN)
Hexagon wrench
is required.
EN
ES
FR
IT
DE
PT
RAS-(B)18UFV
PL
series series
220–240V ~ 50Hz
220–230V ~ 60Hz
CZ
11.0A 12.0A
RU
16A
CR
2 or more)
2 or more)
HU
TR
NL
1 2 3
L N
GR
40
40
30
SV
Earth line
Power cord
FI
1 2 3
L N
NO
40
40
30
DK
Earth line
RO
Power cord
BG
EE
LV
SK
SI