Mitsubishi MSZ-FE09NA-8, MSZ-FE12NA, MSZ-FE12NA-8 Installation Guide

Ar lk MITSUBISHI

ELECTRIC

SPLIT-TYPE AIR CONDITIONERS

INSTALLATION MANUAL

JG79A230H03

MSZ-FE09/12NA

When installing multi units, refer to
the installation manual of the multi

unit for outdoor unit installation.

|Phillips screwdriver 5/32 in. (4 mm) hexagonal wrench
|Level Flare tool for R410A
|Scale Gauge manifold for R410A
|Utility knife or scissors Vacuum pump for R410A
[" Required Tools for Installation

|2-9/16 in. (65 mm) hole saw Charge hose for R410A
|Torque wrench Pipe cutter with reamer
_Wrench (or spanner)

1-1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY

• Be sure to read these safety precautions and instructions.

• Be sure to observe the warnings and cautions specified here.

• After reading this manual, be sure to store it with the OPERATING INSTRUCTIONS for future reference.

• Please report to your supply authority or obtain their consent before connecting this equipment to the power supply system.

[] Do not install the unit by yourself (user).

Improper or incomplete installation could cause fire, electric shock, injury due to
the unit falling, or water leakage. Consult a qualified installer or the dealer from
whom you purchased the unit.

[] Follow the instructions detailed in the installation manual.

Incomplete installation could cause fire or electric shock, injury due to the unit fall-
ing, or leakage of water.

[] Install the unit securely in a place that can bear the weight of the unit.

If the installation location cannot bear the weight of the unit, the unit could fall
causing injury.

[] Perform electrical work according to the installation manual and be sure to use

an exclusive circuit. Do not connect other electrical appliances to the circuit.
If the capacity of the power circuit is insufficient or there is incomplete electrical

work, it could result in a fire or an electric shock.

[] Ground the unit correctly.

Do not connect the ground wire to a gas pipe, water pipe, lightning rod or tel-
ephone ground. Defective grounding could cause electric shock.

[] Do not damage the wires.

Damaged wires could cause fire.

[] Be sure to shut off the main power when setting up the indoor P.O. hoard or

wiring.

Failure to do so could cause electric shock.

[] Use the specified wires to securely connect the indoor and outdoor units. At-

tach the wires firmly to avoid applying stress to the terminal block.
Improper connection could cause fire.

[] Do not install the unit in a place where flammable gas may leak.

If gas leaks and accumulates around the unit, it could cause an explosion.

[] Do not use intermediate connection of the power cord or the extension cord.

Do not connect many devices to one AC outlet.
It could cause a fire or an electric shock.

[] Use the parts provided or specified parts for the installation work.

The use of defective parts could cause an injury or leakage of water due to a fire,
an electric shock, the unit falling, etc.

[] When plugging the power supply plug into the outlet, make sure that there is

no dust, blockage, or loose parts both in the outlet and on the plug. Verify that
the power supply plug is completely inthe outlet.
If there is dust, blockage, or loose parts on the power supply plug or the outlet, it could
cause electric shock or fire. If loose parts are found on the power supply plug, replace it.

[] Securely attach the electrical cover to the indoor unit and the service panel to

the outdoor unit.
If the electrical cover of the indoor unit and/or the service panel of the outdoor unit are

not attached securely, dust, water, etc. could collect in the unit and could cause a fire or
an electric shock.

[] When installing or relocating the unit, make sure that no substance other than

the specified refrigerant (R410A) enters the refrigerant circuit.
Any foreign substances in the refrigerant circuit can cause abnormal pressure rise
or an explosion.

[] Do not discharge the refrigerant into the atmosphere. Check that the refrigerant gas

does not leak after installation has been completed. If refrigerant leaks during
installation, ventilate the room.

If refrigerant comes in contact with a fire, harmful gas could be generated.
If refrigerant gas leaks indoors, and comes into contact with the flame of a fan
heater, space heater, stove, etc., harmful gases will be generated.

[] Use appropriate tools and piping materials for installation.

The pressure of R410A is 1.6 times higher than R22. Not using the appropriate
tools and materials, or improper installation could cause the pipes to burst causing
an injury.

[] When pumping down the refrigerant, stop the compressor before disconnecting

the refrigerant pipes.
If the refrigerant pipes are disconnected while the compressor is running and the

stop valve is open, air could be drawn in and the pressure in the refrigeration cycle
could become abnormally high, causing the pipes to burst.

[] When installing the unit, securely connect the refrigerant pipes before starting

the compressor.
If the compressor is started before the refrigerant pipes are connected and the
stop valve is open, air could be drawn in and the pressure in the refrigeration cycle
could become abnormally high, causing the pipes to burst.

[] Fasten a flare nut with a torque wrench as specified in this manual.

If fastened too tight, a flare nut could break and cause refrigerant leakage.

[] install the unit according to national wiring regulations.

[] Depending on the installation area, install a Ground Fault Interrupt (GFI) circuit [] Do not touch the air inlet or the aluminum fins of the outdoor unit.

breaker.
If the Ground Fault Interrupt (GFI) circuit breaker is not installed, an electric shock

could occur.

[] Perform the drainage/piping work securely according to the installation

manual.
If there is defect in the drainage/piping work, water could drip from the unit, and

damage household items.

\ •

This could cause injury.

[] Do not install the outdoor unit where small animals may live.

If small animals enter the unit and damage its electrical parts, it could cause a
malfunction, smoke emission, or fire. Keep the area around the unit clean.

1-2. SELECTING THE INSTALLATION LOCATION

D• • - Note:
Where airflow is not blocked. In rooms where inverter type fluorescent lamps are used,
Where cool air spreads over the entire room. the signal from the wireless remote controller may not be
On a rigid wall to reduce the possibility of vibration, received.
Where it is not exposed to direct sunlight.
Where it can be easily drained. • D® • -
At a distance 3 ft. (1 m) or more away from a TV and • Where it is not overly exposed to strong winds.
radio. Operation of the air conditioner may interfere •
with radio or TV reception. An amplifier may be re- •
quired for the affected device.

• In a place as far away as possible from fluorescent •
and incandescent lights (so the infrared remote control
can operate the air conditioner normally). •

• Where the air filter can be removed and replaced easily. •

Note:
Install the indoor unit high on the wall where air can dis-

tribute over the entire room.

" • • "0

• Where it is convenient to operate and easily visible.

• Where children cannot easily touch it.

• Select a position about 4 ft. (1.2 m) above the floor.
Check that signals from the remote controller from
that position are received by the indoor unit ('beep'
or 'beep beep' receiving tone sounds). Then, attach
remote controller holder to a pillar or wall and install

wireless remote controller.

Where airflow is good and dustless.
Where neighbours are not annoyed by operation

sound or hot air.
Where rigid wall or support is available to prevent the

increase of operation sound or vibration.
Where there is no risk of combustible gas leakage.

If installing the unit in a location high above the ground,

be sure to secure the unit legs.

o

Where it is at least 10 ft. (3 m) away from the antenna
of TV set or radio. Operation of the air conditioner may

interfere with radio or TV reception in areas where re-
ception is weak. An amplifier may be required for the

affected device.

Install the unit horizontally.
Please install it in an area not affected by snowfall or
blowing snow. In areas with heavy snow, please install
a canopy, a pedestal and/or baffle boards.

1-3. SPECIFICATIONS

1-3-1. POWER SUPPLY AND INDOOR/OUTDOOR WIRE CONNECTION

• Power should be taken from an exclusive branched circuit.

• Wiring work should be based on applicable technical standards.

• Wiring connections should be made following the diagram.

• Securely tighten screws.

Connecting wires and the ground wire

• Use solid conductor AWG14 or stranded conductor AWG14.

• Use double insulated copper wire with 600 V insulation.

• Use copper conductors only.

• Follow local electrical codes.

Power supply cable and ground wire

• Use solid or stranded conductor AWG14.

• Use copper conductors only.

• Follow local electrical codes.

Note:

When the indoor unit is powered from the outdoor unit, depending on local code, a
disconnect switch needs to be installed to a power supply circuit.

Electrical specifications

Power supply (V, PHASE, Hz)
Min. Circuit Ampacity (A)

Fan motor (F.L.A.) (A)

Power supply (V, PHASE, Hz)
Max. Fuse size (time delay) (A)

Min. Circuit Ampacity (A)
Fan motor (F.L.A.) (A)

Control voltage

Note:

• It is advisable to make a piping loop near outdoor unit
so as to reduce vibration.

• For increased efficiency, install the outdoor unit in a
location where continuous direct sunlight or excessive

water can be avoided as much as possible.

Note:
When operating the air conditioner in low outside tem-

perature, be sure to follow the instructions described

below.

• Never install the outdoor unit in a place where its air
inlet/outlet side may be exposed directly to wind.

• To prevent exposure to wind, install the outdoor
unit with its air inlet side facing the wall and a baffle

board on the air outlet side.

Avoid the following places for installation where air
conditioner trouble is liable to occur.

• Where flammable gas could leak.

• Where there is an excessive amount of machine oil
in the air.

• Salty places such as the seaside.

• Where sulfide gas is generated such as a hot spring.

• Where there is high-frequency or wireless equipment.

MSZ-FE09/12NA

208/230, 1, 60

1.0

0.76

208/230, 1, 60

15
12

0.56

8.6

t (R.L.A)(A)Compressor (L.R.A) (A)

Indoor unit - Remote controller: (Wireless)

Indoor unit - Outdoor unit: DC12-24 V (Polar)

10.8

1-3-2. REFRIGERANT PIPES

• To prevent condensation, insulate the two refrigerant pipes.

• Refrigerant pipe bending radius must be 4 in. (100 mm) or more.

Z_ CAUTION
Be sure to use the insulation of specified thickness (table on the right). Excessive insula-

tion may cause incorrect installation of the indoor unit, and too little insulation may cause
condensate to form.

• The unit has flared connections on both indoor and outdoor sides.

• Remove the valve cover from the outdoor unit, then connect the pipe.

• Refrigerant pipes are used to connect the indoor and outdoor units.

• Be careful not to crush or over bend the pipe in pipe bending.

• Refrigerant adjustment... If pipe length exceeds 25 ft. (7.5 m), additional refrigerant

(R410A) charge is required.

(The outdoor unit is charged with refrigerant for pipe length up to 25 ft. [7.5 m])

Outside Insulation

Pipe diameter ness thickness Insulation material

For liquid 1/4 (6.35) (0.8) 5/16 (8) Heat resistant foam

For gas 3/8 (9.52) (0.8) 5/16 (8) gravity

Pipe length 65 ft. (20 m) max.
Height difference 40 ft. (12 m) max.
No. of bends 10 max.

Pipe length

Refrigerant to be
added

Minimum

wall thick-

inch (mm)

0.0315

0.0315

Limits

Up to 25 ft. (7.5 m) required.

Exceeding 25 ft. (7.5 m) Additional charge is required.

1.62 oz each 5 ft. (30 g/m)

plastic 0.045 Specific

No additional charge is

(Refer to the table below.)

1-4. INSTALLATION DIAGRAM

ACCESSORIES
Check the following parts before installation.

<Indoor unit>

(1) Installation plate 1

Attachment screws for the installa-

(2) tion plate 5

i4 x25mm

(3) Remote controller holder 1

Screws for the remote controller

(4) holder 2

3.5 x 16 mm (Black)

(5) Battery (AAA) for (6) 2
(6) Wireless remote controller 1

(7) Felt tape (For left or left-rear piping) 1
(8) i Anti-Allergy Enzyme Filter 1

(9) Platinum deodorizing filter 1

FIELD-SUPPLIED PARTS

(A) Indoor/outdoor unit connecting wire* 1
(B) Extension pipe 1
(C) Wall hole sleeve 1
(D) Wall hole cover 1

(E) Pipe attachment strap 2 to 5
(F) Screw for (E) 4 x 20 mm 2to5
(G) Piping tape 1
(H) Putty 1

Drain hose
(or soft PVC hose, 19/32 in. [15 ram] 2 to 5

(I) inner diameter or hard PVC pipe

VP16)
(J) Refrigerant oil 1
(K) Power supply cord* 1

* Note:
Place indoor/outdoor unit connecting wire (A)

and power supply cord (K) at least 3 ft. (t m)
away from the TV antenna wire.

t"

Use the wall hole sleeve
(C) to prevent indoor/out-

door connecting wire (A)
from contacting metal

parts in the wall and to
protect the wiring from

rodents.

i _/_[fj-Wafi_ holecover (D)

Indoor umt _ SeaJ the waft hole ]

_ [.gapwith putty(H). J

Wail hole ' FJJ// ,-_
sleeve_.ach teh pipe to|

I//tt F_ [lachment strap (E). l

Cut off the Pipeattachment
extra length. _rap (E)

Attachment screw (F)

/(1)

[After the leak test, apply insulating mate- 1

j_ /rial tightly so that there is no gap. J

(9

When the piping is to be attached to a wall
comprised of tin plate or metal netting, use
chemically treated wooden piece 25/32 in.
(20 mm) or thicker between the wall and
the piping, or wrap insulation vinyl tape 7

:)

J

to 8 turns around the piping.
To use existing piping, perform COOL
operation for 30 minutes and pump down

before removing the old air conditioner.
Remake flare according to the dimension

for new refrigerant.

Basicafly open 4 in.
(100 ram) or more

without any obstruction

in front and on both

sides of the unit.

(100 mm)

or more

;I:[L.

2-3/8 x 13/16 slot

31-1/2

Is--- 19-11/16

/- 4>

,/ Air outlet

Unit: inch

Unit: mm

8oo

Open two sides of
left, right, or rear
side.

11-_0,. 500 1

2-10 x21 slot/// Air outlet

aUnitsshould be installed by licensed

ccording to local code requirements. J

contractor 1

Drain piping for outdoor unit
Install the unit horizontally.
Do not use drain socket in cold regions. Drain may freeze and make the fan stop.

The outdoor unit produces condensate during the heating operation. Select the installation place to ensure to prevent the outdoor unit and/or the grounds from being wet by drain

water or damaged by frozen drain water.