Mitsubishi Heavy Industries SRK05CM Technical Manual & Parts List page 32

Installation of outdoor unit
1 Make sure that the unit is stable in installation. Fix the unit to
stable base.
2 Perfrom wiring, making wire terminal numbers conform to
terminal numbers of indoor unit terminal block.
3 Earth lead wire shall be longer than the other lead wires for
the electrical safety in case of the slipping out of the cord
from the anchorage.
Connection of refrigerant pipings
Preparation
Keep the openings of the pipes covered with tapes etc. to prevent dust, sand, etc. from entering them.
1 Indoor unit side
(Do not
turn)
• Remove the  ared nuts.
(on both liquid and gas sides)
Connection of refrigerant piping
1 Indoor unit side
• Connect  rmly gas and liquid side
pipings by Torque wrench.
Spanner
for  xing
the piping)
Torque
wrench
• Speci ed torquing value:
Liquid side (ø6.35)
Gas side (ø9.52)
Gas side (ø12.7)
• Always use a Torque wrench and back up spanner to tighten the  are nut.
Air purge
1 Tighten all  are nuts in the pipings both indoor and outside wall so as not to cause leak.
2 Connect service valve, charge hose, manifold valve and vacuum pump as is illustrated below.
3 Open manifold valve handle Lo to its full width, and perform vacuum or evacuation.
Continue the vacuum or evacuation operation for 15 minutes or more and check to see that the vacuum gauge reads – 0.1 MPa
(– 76 cmHg).
4 After completing vacuum operation, fully open service valve (Both gas and liquid sides) with hexagon headed wrench.
5 Detach the charge hoses.
6 Check for possible leakage of gas in the connection parts of both indoor and outdoor.
RMA012A065A-067A_Install_EN.indd 29
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2 Outdoor unit side
Remove
Remove
• Remove the  ared nuts.
(on both liquid and gas sides)
2 Outdoor unit side
: 14~18N·m (1.4~1.8kgf·m)
: 34~42N·m (3.4~4.2kgf·m)
: 49~61N·m (4.9~6.1kgf·m)
-76 cm Hg
Handle Lo
(pressure)
Stop valve
(Two-way valve)
Stop value
(Three-way
value)
Service port
Charge hose
– 29 –

-
Interconnecting wire
Press
• Install the removed  ared nuts to the pipes to be connected,
then  are the pipes.
• Connect  rmly gas and liquid side
pipings by Torque wrench.
• Speci ed torquing value:
Liquid side (ø6.35) : 14~18N·m (1.4~1.8kgf·m)
Gas side (ø9.52) : 34~42N·m (3.4~4.2kgf·m)
Gas side (ø12.7) : 49~61N·m (4.9~6.1kgf·m)
• Use one more spanner to  x the valve.
Compound Pressure
Manifold
(Gauge) gauge
Valve
Handle Hi
(pressure)
Charge hose
Vacuum pump
-
'13•SRK-T-141
Terminal block
1 2
Dimension A
Liquid side
(ø6.35): 9.0 dia
Gas side
(ø9.52): 13.0 dia
(ø12.7): 16.2 dia
1/25/2013 1:12:43 PM