7
EN
ES
FR
IT
DE
PT
PL
CZ
RU
CR
HU
TR
NL
GR
SV
FI
NO
DK
RO
BG
EE
LV
SK
SI
(Unit : N·m)
Outer dia. of copper pipe Tightening torque
Ø6.35 mm 16 to 18 (1.6 to 1.8 kgf·m)
Ø9.52 mm 30 to 42 (3.0 to 4.2 kgf·m)
Ø12.70 mm 50 to 62 (5.0 to 6.2 kgf·m)
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.
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.
Using a vacuum pump
Packed valve at liquid side
Service port (Valve core (Setting pin))
Packed valve at gas side
Vacuum
pump
Vacuum pump adapter for
counter-fl ow prevention
(For R410A only)
Charge hose
(For R410A only)
Handle Hi
(Keep full closed)
Manifold valve
Pressure gauge
Compound pressure gauge
Handle Lo
Charge hose
(For R410A only)
Connecting pipe
–101 kPa
(–76 cmHg)
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.
• Securely tighten the valve cap with torque in the following table.
Pipe size of Packed Valve Size of Hexagon wrench
12.70 mm and smallers A = 4 mm
15.88 mm A = 5 mm
H
Hexagon wrench
is required.
Cap
Cap Size
(H)
Torque
Valve Rod
Cap
H17 - H19
14~18 N·m
(1.4 to 1.8 kgf·m)
H22 - H30
33~42 N·m
(3.3 to 4.2 kgf·m)
Service
Port Cap
H14
8~12 N·m
(0.8 to 1.2 kgf·m)
H17
14~18 N·m
(1.4 to 1.8 kgf·m)
Service Port Cap
Valve Rod Cap
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
NOTE : Connecting cable
• Wire type : More than H07RN-F or 60245 IEC66 (1.5 mm
2
or more).
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.
100 mm
10 mm
10 mm
50 mm
1(L)
2(N) 3 4
Terminal block
Connecting cable
Terminal screw
screw
Cord clamp
Earth
line
Earth line
• Tightening torque of fl are pipe connections
Flare at
indoor unit side
Flare at
outdoor unit side
Mark line
Flare nut
Half union
Externally
threaded side
Internally
threaded side
Use a wrench to secure. Use a torque wrench to tighten.
01_1115551135-EN.indd 701_1115551135-EN.indd 7 1/13/2558 BE 2:33 PM1/13/2558 BE 2:33 PM
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