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Indoor Unit Installation (2)

3-2. Left-side, left-back, or left-bottom piping.

1) Attach the drain hose to the underside of the refrigerant 

pipes with adhesive vinyl tape.

2) Be sure to connect the drain hose to the drain port in 

place of a drain plug.

3) Shape the refrigerant pipe along the pipe path marking 

on the mounting plate.

4) Pass drain hose and refrigerant pipes through the wall 

hole, then set the indoor unit on mounting plate hooks, 
using the    markings at the top of indoor unit as a guide.

5) Pull in the inter-unit wiring.

6) Connect the inter-unit piping.

7) Wrap the refrigerant pipes and drain hose together with insulation tape 

as right figure, in case of setting the drain hose through the back of the 
indoor unit.

8) While exercising care so that the inter-unit wiring do not catch indoor 

unit, press the bottom edge of indoor unit with both hands until it is 
firmly caught by the mounting plate hooks.  Secure indoor unit to the 
mounting plate with the screws (3/16” × 1/2”L (M4 × 12L)).

3.

Installing indoor unit.

3-1. Right-side, right-back, or right-bottom piping.

1) Attach the drain hose to the underside of the refrigerant pipes 

with an adhesive vinyl tape.

2) Wrap the refrigerant pipes and drain hose together with an 

insulation tape.

3) Pass the drain hose and refrigerant pipes through the wall hole, 

then set the indoor unit on the mounting plate hooks by using the 
   markings at the top of the indoor unit as a guide.

4) Open the front panel, then open the service lid. 

(Refer to Installation Tips.)

5) Pass the inter-unit wiring from the outdoor unit through the feed-

through wall hole and then through the back of the indoor unit.
Connect the inter-unit wiring. (Refer to 4. Wiring.) 

6) Press the bottom frame of the indoor unit with both hands to set it 

on the mounting plate hooks. Make sure that the wires do not 
catch on the edge of the indoor unit.

3-3. Wall embedded piping.

Follow the instructions given under

1) Insert the drain hose to this depth so it won’t be pulled out of 

the drain pipe.

Left-side, left-back, or left-bottom piping   

.

Remove pipe port cover here for left-bottom piping.

Remove pipe port 
cover here for 
left-side piping.

Left-bottom piping

Left-side 
piping

Left-back 
piping

How to set the drain hose.

• Insert drain hose and tighten indoor unit fixing screw.

(Forgetting to attach this may cause water leakages.)

* The drain hose is on the back of the unit.

How to set the drain plug.

Front side of unit

Drain hose attachment position

Attachment on the left side

Drain hose

Indoor unit 
fixing screw

Attachment on the right side (factory default)

Drain hose

Insulation 
fixing screw

No gap

Do not apply 
lubricating oil 
(refrigerant oil) 
when inserting.
Application of 
causes deterioration 
and drain leakage 
of the plug.

Insert a hexagon wrench 
(3/16 inch (4mm))

Wrap insulation tape 
around the bent portion 
of refrigerant pipe. 
Overlap at least half the 
width of the insulation 
tape with each turn.

Drain 
hose

Caulk this hole 
with putty or 
caulking material.

Bind with plastic 
tape.

 A Mounting plate

Refrigerant
pipes

Drain hose

Bottom frame

H  3/16” × 1/2”L 
     (M4 × 12L) (3 point)

Inter-unit wiring

Mounting
plate

A

Inner wall

Vinyl chloride 
drain pipe 
(VP-30)

Drain hose

1-15/16” 
(50mm) 
or more

Insert drain hose to this 
depth so it won’t be 
pulled out of drain pipe.

Outer wall

Right-bottom 
piping

Right-back piping

Bind coolant pipe 
and drain hose 
together with 
insulation tape.

Remove pipe port cover 
here for right-side piping.

Remove pipe port cover 
here for right-bottom piping.

Mounting plate

A

Summary of Contents for M08B128

Page 1: ...stabs or other injuries Tear apart and throw away plastic packaging bags so that children will not play with them Children playing with plastic bags face the danger of death by suffocation Do not ins...

Page 2: ...ping is removed causing abnormally high pressure which could lead to equipment damage or and personal injury When installing or relocating the system be sure to keep the refrigerant circuit free from...

Page 3: ...w to remove the indoor unit Push up the marked area at the lower part of the front grille to release the claws If it is difficult to release remove the front grille Opening service lid Service lid is...

Page 4: ...ddresses 1 In the same way as when connecting to an HA system remove the metal plate electrical wiring cover 2 Cut the address jumper JA on the printed circuit board 3 Cut the address jumper J4 in the...

Page 5: ...nter unit wiring Refer to 4 Wiring 6 Press the bottom frame of the indoor unit with both hands to set it on the mounting plate hooks Make sure that the wires do not catch on the edge of the indoor uni...

Page 6: ...he conduit mounting plate 2 Insert the wires including the ground wire into J tube 3 Strip wire ends 9 16 inch 15mm 4 Match wire colors with terminal numbers on indoor and outdoor unit s terminal bloc...

Page 7: ...Flare the pipe 5 Check that the flaring is properly made 1 Do not use mineral oil on flared part 2 Prevent mineral oil from getting into the system as this would reduce the lifetime of the units 3 Nev...

Page 8: ...eration mode cooling and heating 2 Press the ON OFF button to turn on the system 3 Press the both of TEMP button and the MODE button at the same time 4 Press the MODE button twice will be displayed an...

Page 9: ...are thermally insulated Fall vibration noise Water leakage Water leakage System is properly ground to earth Electrical leakage Indoor unit properly receives remote controller commands Inoperative Indo...

Page 10: ...3P228446 2B M08B128...

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