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- 6 -

„

Installation of Outdoor Unit

• Before installation, check the strength and 

horizontalness of the base so that abnormal sounds 
do not emanate. 

• According to the following base diagram, fix the base 

firmly with the anchor bolts. 
(Anchor bolt, nut: M10 x 4 pairs)

• As shown in the figure below, install the foundation 

and vibration-proof rubber pads to directly support the 
bottom surface of the fixing leg that is in contact with 
and underneath the bottom plate of the outdoor unit. 

* When installing the foundation for an outdoor unit with 

downward piping, consider the piping work. 

Set the out margin of the anchor bolt to 15 mm or less.

• When water is to be drained through the drain hose, 

attach the following drain nipple and waterproof rubber 
cap, and use the drain hose (Inner diam: 16 mm) sold 
on the market. Also seal knockout hole and the screws 
securely with silicone material, etc., to prevent water 
from leaking. 
Some conditions may cause dewing or dripping of 
water. 

• When collectively draining discharged water 

completely, use a drain pan. 

„

For Reference

If a heating operation is to be continuously performed for 
a long time under the condition that the outdoor 
temperature is 0 °C or lower, draining defrosted water 
may be difficult due to the bottom plate freezing, 
resulting in trouble with the cabinet or fan. 
It is recommended to procure an anti-freeze heater 
locally in order to safely install the air conditioner. 
For details, contact the dealer. 

150

150

600

525

45

365

400

Drain nipple 

mounting hole

Drain hole

Drain hole

GOOD

Fixing leg

Absorb vibration 

with vibration-proof 

rubber pads

Foundation

GOOD

Bottom plate of 

outdoor unit

Foundation

Support the bottom surface of the fixing leg 

that is in contact with and underneath the 

bottom plate of the outdoor unit.

NO GOOD

If only the end 

of the fixing leg 

is supported, it 

may deform.

Do not support 
the outdoor 
unit only with 
the fixing leg.

Foundation

15 or less

Drain nipple

Waterproof rubber cap

(5 pcs.)

Waterproof rubber cap

Drain nipple

Knockout hole

5

REFRIGERANT PIPING

„

Knockout of Pipe Cover

Knockout procedure 

• The indoor/outdoor connecting pipes can be 

connected in 4 directions. 
Take off the knockout part of the pipe cover through 
which pipes or wires will pass through the base plate. 

• Detach the pipe cover and tap on the knockout section 

a few times with the shank of a screwdriver. A 
knockout hole can easily be punched.

• After punching out the knockout hole, remove burrs 

from the hole and then install the supplied protective 
bush and guard material around the passage hole to 
protect wires and pipes.
Be sure to attach the pipe covers after pipes have 
been connected. Cut the slits under the pipe covers to 
facilitate the installation.
After connecting the pipes, be sure to mount the pipe 
cover. The pipe cover is easily mounted by cutting off 
the slit at the lower part of the pipe cover.

* Be sure to wear heavy work gloves while working.

„

Optional Installation Parts 
(Locally procured)

„

Refrigerant Piping Connection

CAUTION

TAKE NOTE OF THESE 4 IMPORTANT POINTS 
BELOW FOR PIPING WORK 

1.

Keep dust and moisture away from inside the 
connecting pipes. 

2.

Tightly connect the connection between pipes and 
the unit. 

3.

Evacuate the air in the connecting pipes using a 
VACUUM PUMP. 

4.

Check for gas leaks at connection points. 

Rear direction

Pipe cover

Side direction

Down direction

Front direction

Parts name

Q’ty

A

Refrigerant piping
Liquid side: Ø9.5 mm
Gas side: Ø15.9 mm

One each

B

Pipe insulating material
(polyethylene foam, 10 mm thick)

1

C

Putty, PVC tape

One each

EN-11

EN-12

Summary of Contents for RAV-SM1603AT-A

Page 1: ...English AIR CONDITIONER SPLIT TYPE Installation manual Outdoor Unit Model name RAV SM1603AT A For commercial use ...

Page 2: ...SSORY PARTS AND REFRIGERANT Accessory Parts Refrigerant Piping Piping kit that is used for the conventional refrigerant cannot be used Use copper pipe with 0 8 mm or more thickness for Ø9 5 mm Use copper pipe with 1 0 mm or more thickness for Ø15 9 mm Flare nut and flare works are also different from those of the conventional refrigerant Take out the flare nut attached to the air conditioner and u...

Page 3: ...llation work confirm that refrigerant gas does not leak If refrigerant gas leaks into the room and flows near a fire source such as a cooking range noxious gas may be generated Electrical work must be performed by a qualified electrician in accordance with the Installation Manual Make sure the air conditioner uses an exclusive power supply An insufficient power supply capacity or inappropriate ins...

Page 4: ...pared newly Vacuum pump Vacuum drying Unusable Vacuum pump with backflow prevention function Vacuum drying R22 Conventional tools Flare tool Flare machining of pipes Usable if dimensions are adjusted Bender Bending pipes R22 Conventional tools Refrigerant recovery equipment Refrigerant recovery For R410A only Torque wrench Tightening flare nuts Exclusive for Ø12 7 mm and Ø15 9 mm Refrigerant Pipin...

Page 5: ...le enough to support the weight of the outdoor unit Insufficient durability may cause the outdoor unit to fall which may result in injury CAUTION Do not install the outdoor unit in a location that is subject to combustible gas leaks Accumulation of combustible gas around the outdoor unit may cause a fire Install the outdoor unit in a location that meets the following conditions after the customer ...

Page 6: ...00 or more 300 or more 300 or more The height of the obstacle should be lower than the height of the outdoor unit 200 or more 150 or more 500 or more Obstacle in front Above unit is free 1 Single unit installation 2 Serial installation of two or more units Obstacle also at the above unit Obstacles in both front and rear of unit Open above and to the right and left of the unit The height of an obst...

Page 7: ...rface of the fixing leg that is in contact with and underneath the bottom plate of the outdoor unit NO GOOD If only the end of the fixing leg is supported it may deform Do not support the outdoor unit only with the fixing leg Foundation 15 or less Drain nipple Waterproof rubber cap 5 pcs Waterproof rubber cap Drain nipple Knockout hole 5 REFRIGERANT PIPING Knockout of Pipe Cover Knockout procedure...

Page 8: ...e nut Externally threaded side Internally threaded side Fix with wrench Tighten with torque wrench 2 As shown in the figure be sure to use two wrenches to loosen or tighten the flare nut of the valve on the gas side If you use a single crescent the flare nut cannot be tightened to the required tightening torque On the other hand use a single crescent to loosen or tighten the flare nut of the valve...

Page 9: ...L Tighten the valve and caps of the charge port securely 1 Use the vacuum pump vacuum pump adapter and gauge manifold correctly referring to the manuals supplied with each tool before using them Check that the vacuum pump oil is filled up to the specified line of the oil gauge 2 When air is not charged check again whether the connecting port of the discharge hose which has a projection to push the...

Page 10: ...N 1 2 3 1 2 3 Main circuit Indoor outdoor connecting wires Outdoor unit Remote controller Indoor unit Earth Circuit breaker Input power 220 240 V 50 Hz For the air conditioner connect a power wire with the following specifications How to wire 1 Connect the connecting wire to the terminal as identified with their respective numbers on the terminal block of the indoor and outdoor units H07 RN F or 6...

Page 11: ...essor during startup To protect the compressor power is supplied from the 220 240 VAC input to the unit to preheat the compressor Check the following before starting a test run That all pipes are connected securely without leaks That the valve is open If the compressor is operated with the valve closed the outdoor unit will become overpressurized which may damage the compressor or other components...

Page 12: ... indoor unit operation with the remote controller 3 Press refrigerant recovery switch SW802 on the P C board of the outdoor unit to drive the air conditioner into the forced cooling mode for up to 10 minutes Open the valve to start refrigerant recovery 4 Upon completion of refrigerant recovery close the valve and press SW802 for at least 1 second to stop operation 5 Turn off the power DANGER Be ca...

Page 13: ...that a large quantity of dirty oil or moisture remains inside the pipes 5 When a commercially available dryer is attached to the existing pipes There is the possibility that copper green rust has been generated 6 When the existing air conditioner is removed after refrigerant has been recovered Check if the oil is judged to be clearly different from normal oil The refrigerator oil is copper rust gr...

Page 14: ...hanges to a muddy or black color If there is discharge of remains it is judged that a large quantity of remains are present Piping necessary to change the flare nut machining size due to pipe compression Clean the pipes or use new pipes In case of twin pipes also be sure to flush the branching pipe Note Turn the existing pipe switch on the cycle control PC board of the outdoor unit to ON side At s...

Page 15: ... 14 MEMO EN 27 EN 28 ...

Page 16: ... air conditioners is 0 3 kg m3 NOTE 1 If there are 2 or more refrigerating systems in a single refrigerating device the amounts of refrigerant should be as charged in each independent device For the amount of charge in this example The possible amount of leaked refrigerant gas in rooms A B and C is 10 kg The possible amount of leaked refrigerant gas in rooms D E and F is 15 kg Total amount of refr...

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