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 • Always provide sufficient entry and exit space to allow installation work, inspection and unit 

replacement.

 • Waterproof the rear surface of the ceiling below the unit in consideration of water droplets 

forming and dropping.

When cooling operation is performed for an extended period under the following conditions, 
water droplets may form and drop. Attach locally purchased insulation (foamed polyethylene 
with a thickness of 5 mm or more) to the outside of the indoor unit before installation within 
the ceiling for improving the heat insulation.
• Locations with a dew point inside the ceiling of 23 C or more
• Kitchens and other locations that produce large amounts of heat and steam
• Locations where the inside of the ceiling serves as an outside air intake passage

• Do not place objects that might obstruct the air flow within 1 m below the intake grille.

 • The relative positions of the ceiling opening and the hanging bolts are shown in the illustration 

to the right. When making an inspection opening below the unit, make a 960 mm  

×  480 mm 

opening in the ceiling surface. Also, lead the drain piping, refrigerant piping and indoor/outdoor 
connecting cable up to the respective piping and cable connection positions.

 • Secure the hanging bolts (M10, Locally Purchased) firmly in a manners capable of supporting 

the unit weight.

 • Consult your construction or interior contractor for details on finishing the ceiling opening.

• Fit the drain hose insulation  7  around 

the drain hose as shown in the right 
figure.

• Attach the discharge chamber.              

(10 screws)

 • Cut out the intake cut-out portions in the 

unit rear panel using cutter or other tools 
to make openings.

 • Remove the two screws at the rear edge 

of the unit top panel, and attach the  
intake chamber.          (8 screws)

This diagram shows the unit together 
with the purchased components.

Discharge 
side duct

Intake side 
duct

Allowable 

duct length

5 m or less including 

the intake side

1 m or less

Duct bends

90  or less

in one location

45  or less

in one location

(This shows an installation example.)

177

321

331

310

176

287.5

Hanging bolt 790

Hanging bolt 315

Intake chamber for 
Ø150 flexible duct

Intake chamber for 
oval flexible duct

Indoor unit

Discharge chamber for 
oval flexible duct

Discharge chamber for 
Ø150 flexible duct

Top

750

65

370

30

150

199

65

65

331

Hanging bolt 790

300 or more

300 or more

(12)

180

275

235

114

44

193

59

30

Waterproofing

330 or more

Hanging bolt 315

Installation parts you
should purchase

Drain hose 
insulation

Intake
chamber

Discharge 
chamber

To the 
receiver

Intake cut-out 
portion

7

37

 • Select a ceiling or wall position that does not block reception for the mounting location. Note that 

the receiver cord is 2.0 m.

 • First hook the clamps  11  onto the receiver mount  10   as shown in the figure below, then 

partially tighten the mounting screws  12 .

 • Fit the receiver  8  into the receiver mount  10 so that the locking hooks are firmly engaged.
 • Fit the above mounts into the ceiling or wall opening, and tighten the screws  12  until the clamps  

11  firmly clasp the ceiling or wall materials.

 • Attach the receiver cover  9  so that the hooks on the inside are firmly hooked onto the receiver 

mount  10 .

 • Lead the receiver cord and connect it to the control box.

 • Attach the nuts and washers to the hanging bolts, then 

lift up and hook the main unit onto the hanging fixtures.

 • Check that the unit is level using a level or a vinyl hose 

filled partially with water.

(Unit: mm)

(Hanging bolt pitch)

990

(Unit: mm)

 • To increase the air volume, open the 

control box and on the control board 
switch the high state switch (SW2) to 
“HI”.

 • See the diagram for “Connecting the 

Indoor/ Outdoor Connecting Cable”.

Hanging bolt (M10) 
(Locally Purchased)

Hexagonal nut (M10) 
(Locally Purchased)

Flat washer 
(Locally Purchased)

Level

Hanging 
bolt M10

Ceiling surface

114

Reinforcing materials 
(60 to 90 mm square)

Roof beam

Appro

x.

Ceiling or wall 
(thickness 7 to 12 mm)

Receiver 
cover  9

Receiver  8

Receiver 
mount 10

Clamp 11

50mm 

or more

30

40

t =2

C channel 

Hanging fixture  

Hanging bolt 

Hanging 
bolt M10

Insert hole-in 
anchor, etc.

Ceiling surface

114

Appro

x

.

Removal groove

Mounting hole
in the case
using wood screw 
(Locally Purchased)

Locking hook

103

+5

0

65

+5

0

Receiver

mount

Clamp mounting

screw

Receiver cover

Ceiling or 
wall opening

Receiver 

Clamp

8

 11

 12

 10

 9

38

Terminals on the indoor unit

1          2         3

Color of wires

Terminals on the outdoor unit

1          2         3

 • Secure the cable onto the control board with the holder (clamper).

 • Lay the drain piping so as to ensure drainage.
 • Use a locally purchased VP20 general rigid PVC pipe (outer 

diameter ø26) for the drain piping, and firmly connect the 
indoor unit and the drain piping using PVC adhesive to 
ensure that there is no leakage.

 • Drain piping located indoors should always be insulated by 

wrapping with locally purchased insulation (foamed polyethylene 
with a thickness of 10 mm or more).

 • The drain piping should have a downward gradient (1/50 or more), 

and should be secured using pipe hanging equipment to avoid 
creating hills or traps partway.

• Remove the control box cover and lead the connecting cable into the control box.
• Check the colors of the wires on the terminal board, and secure them with screws.
• Secure the outer sheath of the connecting cable with the cord clamp.
• Reattach the control box cover in its original position.

When connecting the 
connecting cable, provide 
approximately 40 cm of extra 
length near the unit to facilitate 
servicing of electrical parts.

 • Align the center of the half-union and the connection pipe and 

tighten the flare nut by hand, then tighten with a torque wrench.

 • After the piping is connected, insulate as shown in the illustration 

below.

Liquid side ø6.35 (1/4")

Gas side ø9.52 (3/8")

Pipe diameter

Tightening torque

 • Pour approximately 600 cc of water into the drain pan of the main 

unit using a squeeze bottle, etc.

 • Press the drain test run switch located on the control board of the 

control box to start the drain motor, and check that the water 
drains normally. (The drain motor operates for approximately 5 
minutes and then stops automatically.) (See the diagram for 
“Connecting the Indoor/Outdoor Connecting Cable”.)

18N • m (1.8 kgf • m)

42N • m (4.2 kgf • m)

• Connecting cable between indoor unit and outdoor unit shall be approved 

polychloroprene sheathed 4 

× 1.5 mm

2

 flexible cord, type designation 245 IEC 

57(H05RN-F) or heavier cord. 

   • Ensure the color of wires of outdoor unit and the terminal Nos. are the same to the 

indoor’s  respectively.

   • Earth lead wire shall be longer than the other lead wires as shown in the figure for 

the electrical safety in case of the slipping out of the cord from the anchorage. 

Absolutely do not install and extend the drain piping from the 
main unit drain water outlet horizontally or upward or raise it 
20cm or more. Doing so may result in poor drainage or 
cause of drain motor failure.

 • Should some obstacle prevent the drain piping from being 

extended smoothly, the drain piping can be raised outside the 
main unit as shown in the illustration below.

20 cm 
or less

7 cm 
or less

VP20 elbow VP20 pipe

Upward 
gradient
or level

Connect the VP20 elbow directly
to the main unit outlet.

Downward gradient 
1/50 or more

Trap

 No insulation  

Insulation (thickness 
10 mm or more)

Downward gradient 
1/50 or more

Rise

Hill

Half-union

Flare nut

Wrench

Torque wrench for flare nuts

(Auxiliary pipe)

(17 mm and 12 mm end 
wrench or adjustable spanner)

(Connection pipe)

Piping insulation  1 

Band   2

Unit side

Wrap firmly with vinyl tape, 
leaving no gaps.

Wrap firmly with vinyl tape, 
leaving no gaps.

Piping insulation  1 

Band   2

Unit side

Drain pan

Squeeze bottle

Heat
exchanger

Approximately 
600 cc of water

“DRAIN TEST” switch

Indoor/outdoor 
connection terminals

Earth wire

Cord clamp

Indoor/outdoor 
connecting cable

 High state switch (SW2)

39

POWER

TIMER

ODOUR

WASH

AUTO

OFF/ON

OPEN

Is there any gas leakage at  
flare nut connections?

Is the power supply voltage 
complied with rated value?

Is there any abnormal sound?

Is the cooling / heating operation 
normal?

Is the thermostat operation 
normal?

Is the remote control’s LCD 

operation normal?

Has the heat insulation been carried  
out at flare nut connection?

Is the connecting cable being  
fixed to terminal board firmly?

Is the connecting cable being  
clamped firmly?

Is the drainage ok?
(Refer to “Check the drainage” 
 section)

Is the earth wire connection 

properly done?

Web Site : http://www.panasonic.co.jp/global/

F612425  

PRINTED IN JAPAN

The below operations will be performed by pressing the “AUTO” switch.

1. AUTO OPERATION MODE

1.

The Auto operation will be activated 

immediately once the “AUTO” switch is pressed.

2. TEST RUN OPERATION (FOR PUMP 

DOWN/SERVICING PURPOSE)

     The Test Run operation will be activated if 

the “AUTO” switch is pressed continuously for 

more than 5 sec. to below 8 sec..

1.

A short beep sound will occur at the fifth sec.,

in order to identify the starting of Test Run 

operation.

• When installing two air conditioners in one room, each air conditioner can be 

synchronized to the remote control.
In order to operate separately, open the rear cover of one of the remote control and set 
to “B”.

Setting the air conditioner unit to “B”

1. Press the “AUTO” switch for about 11 to 15 seconds.  When you hear three short beeps 

release the switch.

1. 

Note: you will hear one short beep in about 5 seconds, and then two short beeps in 

about 8 seconds.

2. Press again the  “AUTO”  switch within 60 seconds.  Every press the “AUTO” switch, you 

will hear a short beep.  When you hear eventually a long beep, stop pressing the

 “AUTO” switch , which achieves “B” setting.

1. 

If you stop pressing the “AUTO” switch midway at the short beep, this will achieve 

“A” setting.

3. After 60 seconds or longer of the above setting, use the “B” set remote control to confirm 

successful operation.

Set “B” on the remote control.

This can be achieved by cutting 

the jumper wire of the remote 

control with a cutter.

“AUTO” switch

Remote control

Give two cuts.

Side view of jumper

The disconnected jumper 

wire is “B” setting.

Jumper wire

40