background image

6

Incused line

Flare at 
indoor unit side

Flare at
outdoor unit side

Flare nut

Half union

Externally
threaded side

Internally
threaded side

Use a wrench to secure.

Use a torque wrench to tighten.

90

Obliquity

Roughness

Warp

CAUTION

Refrigerant Piping Connection

1.  Cut the pipe with a pipe cutter.

2. Insert a 

fl

 are nut into the pipe and 

fl

 are the pipe.

 • 

Projection margin in 

fl

 aring : A (Unit : mm)

RIDGID

 (clutch type)

IMPERIAL

 (wing nut type)

Outer dia. of copper pipe

R410A

Ø6.35

1.5 to 2.0

Ø9.52

1.5 to 2.0

Ø12.70

2.0 to 2.5

Align the centers of the connecting pipes and tighten the 

fl

 are nut as far as pos-

sible with your 

fi

 ngers. Then tighten the nut with a spanner and torque wrench 

as shown in the 

fi

 gure.

     

Tightening connection

Do not apply excess torque. Otherwise, the nut may crack depending on 
the conditions.

(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.

Outer dia.

of copper pipe

R410A tool used

Conventional tool 

used

Ø6.35

0 to 0.5

1.0 to 1.5

Ø9.52

0 to 0.5

1.0 to 1.5

Ø12.70

0 to 0.5

1.0 to 1.5

• 

Tightening torque of 

fl

 are pipe connections

 

The operating pressure of R410A 
is higher than that of R22 (approx. 
1.6 times). It is therefore necessary 
to 

fi

 rmly tighten the 

fl

 are pipe 

connecting sections (which connect 
the indoor and outdoor units) up to the 
speci

fi

 ed tightening torque. Incorrect 

connections may cause not only a 
gas leakage, but also damage to the 
refrigeration cycle.

1.  How to shape the pipes 
  Shape the pipes along the incused line on 

the outdoor unit.

2. How to 

fi

 t position of the pipes

  Put the edges of the pipes to the place with 

a distance of 85 mm from the incused line.

     Shaping pipes

     Flaring

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 con

fi

 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.

A

Die

Pipe

     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

  

A

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

Summary of Contents for RAS-077SAV-E6

Page 1: ...AIR CONDITIONER SPLIT TYPE INSTALLATION MANUAL ENGLISH Indoor unit RAS 077 107 137 167SKV E7 Outdoor unit RAS 077 107 137SAV E6 RAS 167SAV E5 1115551127 ...

Page 2: ...ectrical Work 3 Wiring Connection 4 Piping and Drain Hose Installation 4 Indoor Unit Fixing 5 Drainage 5 OUTDOOR UNIT 5 Installation Place 5 Precautions about Installation in Regions with Snowfall and Cold Temperatures 5 Refrigerant Piping Connection 6 Evacuating 6 Wiring Connection 7 OTHERS 7 Gas Leak Test 7 Remote Control A B Selection 7 Test Operation 7 Auto Restart Setting 7 CONTENTS EN ...

Page 3: ...HAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLATION DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD PLACE THE UNIT WELL AWAY MORE THAN 2 M FROM HEAT SOURCES SUCH AS RADIATORS HEATERS FURNACE STOVES ETC WHEN MOVING THE AIR CONDITIONER FOR INSTA...

Page 4: ...re to run the drain hose sloped downward Do not allow the drain hose to get slack Cut the piping hole sloped slightly The auxiliary piping can be connected to the left rear left rear right right bottom right or bottom left Right Rear right Bottom right Rear left Bottom left Left 6 mm thick heat resisting polyethylene foam 1 Batteries Flat head wood screw Remote control holder Vinyl tape Apply afte...

Page 5: ...agram A place where there are no obstacles near the air inlet and outlet A place which allows easy installation of the piping to the outdoor unit A place which allows the front panel to be opened The indoor unit shall be installed as top of the indoor unit comes to at least 2 m height Also it must be avoided to put anything on the top of the indoor unit CAUTION 5 4 45 5 7 Side view Top view Indoor...

Page 6: ...the removed operation is performed Wiring Connection Wiring of the connecting cable can be carried out without removing the front panel 1 Remove the air inlet grille Open the air inlet grille upward and pull it toward you 2 Remove the terminal cover and cord clamp 3 Insert the connecting cable according to the local cords into the pipe hole on the wall 4 Take out the connecting cable through the c...

Page 7: ...t block a passage When the outdoor unit is to be installed in an elevated position be sure to secure its feet The allowable pipe length is up to 20 m If the length is over 15 m add 20 g of refrigerant for every additional meter of the pipe length The allowable height of outdoor unit installation site is up to 10 m A place where the drain water does not raise any problems CAUTION 1 Install the outd...

Page 8: ... a vacuum pump with counter flow prevention function so that inside oil of the pump does not flow 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 h...

Page 9: ...usive use with the air conditioner This product can be connected to the mains Connection to fixed wiring A switch which disconnects all poles and has a contact separation of at least 3 mm must be incorporated in the fixed wiring CAUTION Check places for the indoor unit Check places for the outdoor unit Information To switch the TEST RUN COOL mode press RESET button for 10 seconds The beeper will m...

Page 10: ...1115551127 ...

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