Evacuating; Wiring Connection - Toshiba RAS-10S3KHS-EE Installation Manual

Outer dia. of copper pipe
Ø6.35 mm
Ø9.52 mm
Ø12.70 mm
• Tightening torque of fl are pipe connections
Flare at
indoor unit side
Flare at
outdoor unit side
Half union
Externally
threaded side
Use a wrench to secure.

Evacuating

After the piping has been connected to the indoor unit, you can perform the
air purge together at once.
AIR PURGE
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 result.)
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
(Unit : N·m)
Tightening torque
16 to 18 (1.6 to 1.8 kgf·m)
30 to 42 (3.0 to 4.2 kgf·m)
50 to 62 (5.0 to 6.2 kgf·m)
Mark line
Flare nut
Internally
threaded side
Use a torque wrench to tighten.
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
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 all the way out, but do not try to open it beyond the
stopper.
Pipe size of Packed Valve
12.70 mm and smallers
15.88 mm
• Securely tighten the valve cap with torque in the following table.
Cap Size
Cap Torque
(H)
14~18 N·m
H17 - H19
(1.4 to 1.8 kgf·m)
Valve Rod
Cap
33~42 N·m
H22 - H30
(3.3 to 4.2 kgf·m)
8~12 N·m
H14
(0.8 to 1.2 kgf·m)
Service
Port Cap
14~18 N·m
H17
(1.4 to 1.8 kgf·m)

Wiring Connection

1. Remove the valve cover from the outdoor unit.
2. Connect the connecting cable to the terminals as identifi ed with their
respective matched numbers on the terminal block of indoor and outdoor
unit.
3. When connecting the connecting cable to the outdoor unit terminals, make
a loop as shown in the installation diagram of indoor and outdoor unit to
prevent water coming in the outdoor unit.
4. Insulate the unused cords (conductors) from any water coming in the
outdoor unit. Proceed them so that they do not touch any electrical or metal
parts.
Stripping length of the connecting cable
100 mm
Earth line
10 mm
10 mm
50 mm
CAUTION
• Wrong wiring connection may cause some electrical parts burn out.
• Be sure to comply with local cords on running the wire from indoor unit
to outdoor unit (size of wire and wiring method, etc.).
• Every wire must be connected fi rmly.
NOTE
: Connecting cable
• Wire type : More than H07RN-F or 60245 IEC66 (1.5 mm
7
Size of Hexagon wrench
A = 4 mm
A = 5 mm
Hexagon wrench
is required.
Service Port Cap
Valve Rod Cap
Terminal block
Terminal screw
1(L) 2(N) 3 4
screw
Connecting cable
Cord clamp
2 or more).
EN
ES
FR
IT
DE
A
PT
H
PL
CZ
RU
CR
HU
TR
NL
GR
SV
FI
Earth
line
NO
DK
RO
BG
EE
LV
SK
SI