Floor and Ceiling Type Air-Conditioner
HFC
utilized
R410A
English
CONTENTS
MCFZ-A12WV
MUZ-A12YV(H)
[FLARE CONNECTION TYPE]
INSTALLATION MANUAL
1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR
SAFETY ........................................................................................... 2
2. SELECTING THE INSTALLATION LOCATION ............................... 2
3. INSTALLATION DIAGRAM & ACCESSORIES ................................ 3
4. INDOOR UNIT INSTALLATION ....................................................... 4
5. OUTDOOR UNIT INSTALLATION ................................................... 9
6. INDOOR/OUTDOOR UNIT CONNECTION FINISHING AND
TEST RUN ..................................................................................... 10
7. FOR MOVEMENT AND MAINTENANCE ...................................... 13
FOR INSTALLER
1. THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR
285 mm
40 mm
344.5 mm
304 - 325 mm
800 mm
500 mm
150
mm
SAFETY
•
Please provide an exclusive circuit for the air conditioner and do not connect other electrical appliances to it.
• Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR SAFETY” before installing
the air conditioner.
• Be sure to observe the cautions specified here as they include important items related to safety.
• The indications and meanings are as follows.
Warning: Could lead to death, serious injury, etc.
Caution: Could lead to serious injury in particular environments when operated incorrectly.
• After reading this manual, be sure to keep it together with the instruction manual in a handy place on
the customer’s site.
Warning
■ Do not install it by yourself (customer).
Incomplete installation could cause injury due to
fire, electric shock, the unit falling or leakage of
water. Consult the dealer from whom you purchased the unit or special installer.
■ Install the unit securely in a place which can
bear the weight of the unit.
When installed in an insufficient strong place, the
unit could fall causing injury.
■ Use the specified wires to connect the indoor
and outdoor units securely and attach the
wires firmly to the terminal block connecting
sections so the stress of the wires is not applied to the sections.
Incomplete connecting and fixing could cause a fire.
■ Do not use intermediate connection of the
power cord or the extension cord and do not
connect many devices to one AC outlet.
It could cause a fire or an electric shock due to
defective contact, defective insulation, exceeding
the permissible current, etc.
■ Check that the refrigerant gas does not leak
after installation has completed.
If refrigerant gas leaks indoors, and comes into
contact with the fire of a fan heater, space heater,
stove, etc., harmful substances will be generated.
■ Perform the installation securely referring to
the installation manual.
Incomplete installation could cause a personal
injury due to fire, electric shock, the unit falling or
leakage of water.
■ Earth the unit.
Do not connect the earth to a gas pipe, water
pipe, lightning rod or telephone earth. Defective
earthing could cause an electric shock.
■ Do not install the unit in a place where an inflammable gas leaks.
If gas leak and accumulate in the area surrounding the unit, it could cause an explosion.
■ Install an earth leakage breaker depending on
the installation place (Where it is humid).
If an earth leakage breaker is not installed, it could
cause an electric shock.
Caution
■ Perform electrical work according to the installation manual and be sure to use an exclusive 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.
■ Attach the electrical part cover to the indoor
unit and the service panel to the outdoor unit
securely.
If the electrical part cover in the indoor unit and/
or the service panel in the outdoor unit are not
attached securely, it could result in a fire or an
electric shock due to dust, water, etc.
■ Be sure to use the part 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.
■ Be sure to cut off the main power in case of
setting up the indoor electronic control P.C.
board or wiring works.
It could cause an electric shock.
■ The appliance shall be installed in accordance
with national wiring regulations.
■ When installing or relocating the unit, make
sure that no substance other than the specified refrigerant (R410A) enters the refrigerant
circuit.
Any presence of foreign substance such as air
can cause abnormal pressure rise or an explosion.
■ Perform the drainage/piping work securely
according to the installation manual.
If there is a defect in the drainage/piping work,
water could drop from the unit and household
goods could be wet and damaged.
■ Fasten a flare nut with a torque wrench as
specified in this manual.
When fastened too tight, a flare nut may broken
after a long period and cause a leakage of refrigerant.
2. SELECTING THE INSTALLATION LOCATION
2-1 INDOOR UNIT
• Where airflow is not blocked.
• Where cool air spreads over the entire room.
• Maximum refrigerant piping length between indoor unit and outdoor unit is 20 m and the difference of height
of both units is 12 m.
• Rigid wall without vibration.
• Where it is not exposed to direct sunshine.
• Where easily drained.
• At a distance 1 m or more away from your TV and radio. Operation of the air conditioner may interfere with
radio or TV reception in areas where reception is weak. An amplifier may be required 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.
2-2 WIRELESS REMOTE CONTROLLER MOUNTING
• Place of mounting
- Where it is easy to operate and easily visible.
- Where children cannot touch.
• Mounting
Select a position about 1.2 m above the floor, check that signals from the controller are surely received by
the indoor unit from that position (‘beep’ or ‘beep-beep’ receiving tone sounds), attach remote controller
holder 4 to a pillar or wall, then set the wireless remote controller 3.
In rooms where inverter type fluorescent lamps are used, the signal from the wireless remote controller may
not be received.
2-3 OUTDOOR UNIT
• Where it is not exposed to strong wind.
• Where airflow is good and dustless.
• Where it is not exposed to rain and direct sunshine.
• 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.
• When installing the unit at a high level, be sure to fix the unit legs.
• Where it is at least 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 reception 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 some baffle boards.
Note:
It is advisable to make a piping loop near outdoor unit so as to reduce vibration transmitted from there.
Caution:
Avoid the following places for installation where air conditioner trouble is liable to occur.
• Where flammable gas could leak.
• Where there is much machine oil.
• Salty places such as the seaside.
• Where sulfide gas is generated such as a hot spring.
• Where there is high-frequency or wireless equipment.
2-10 mm × 21 mm slot
2
Air inlet
Air outlet
2
1
2
A
I
E
C
8
7
G
F
4
3
6
5
3. INSTALLATION DIAGRAM & ACCESSORIES
Remark:
Accessories of this unit are packed inside the unit. Please remove
the front grille as shown in the right (See “FRONT GRILL REMOVAL”), and check accessories before installation.
500 mm or more
1000 mm or more
500 mm or more
500 mm or more
500 mm or more
Front grille
Accessories
Basically open 100 mm or
more without any
obstruction in front and on
both sides of the unit.
100 mm or more
Open two sides
of left, right, or
rear side.
200 mm or more
100 mm or more
350 mm or more
ACCESSORIES
Check the following parts before installation.
<Indoor unit>
1 Installation plate 2
2 Unit fixing screw 5 × 12 mm 2
3 Wireless remote controller 1
4 Remote controller holder 1
5 Fixing screw for 4 3.5 × 16 mm (Black) 2
6 Battery (AAA) for remote controller 2
7 Drain hose 1
8 Drain pipe cover 1
9 Knockout cover 1
0 Screw for 9 4 × 10 mm 2
Item Q’ty
<Outdoor unit: For YV type only>
A Drain socket 1
OPTIONAL PARTS
Air cleaning filter MAC-1200FT
Deodorizing filter MAC-1700DF
Name Parts No.
When the piping is to be attached to a wall containing metals (tin plated) or metal netting, use a chemically treated wooden piece 20 mm or thicker between the wall and the piping or wrap 7 to 8 turns
of insulation vinyl tape around the piping.
Units should be installed by licensed contractor accordingly
to local code requirement.
Note:
When operating the air conditioner in low outside temperature, 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.
• To prevent exposure to wind, it is recommended to install a baffle board on the air
outlet side of the outdoor unit.
PARTS TO BE PROVIDED AT YOUR SIDE
A Refrigerant pipe 1 set
B Indoor/outdoor connecting wire (4-core 1.0 mm
C Piping tape 1
D Drain pipe (PVC pipe : OD ø26) 1
E Pipe fixing band for refrigerant pipe
(The quantity depends on the pipe length.)
F Fixing screw for E
(The quantity depends on the pipe length.)
G Drain-joint pipe (PVC pipe : OD ø26, L=50 mm) 1
H Power supply cord (3-core 1.0 mm
I Piping hole repair parts (Putty and Wall hole cover) 1
J Installation plate fixing bolt (M10) 4
K Nut, Spring washer for J (M10) 4 set
Item Q’ty
2
)1
2
)1
REFRIGERANT AND DRAIN PIPE SIZES
Refrigerant pipe
Drain pipe Hard PVC pipe : OD ø26
Liquid OD ø6.35
Gas OD ø9.52
2 to 5
2 to 5
3
4. INDOOR UNIT INSTALLATION
a
b
c
d
e
a
a
b
a
1
300 mm
150 mm
1065 mm
f
J
g
c
J
1
FLARED CONNECTIONS
• This unit has flared connections on both indoor and outdoor sides.
• Refrigerant pipes are used to connect the indoor and outdoor units as shown in the figure below.
• Insulate both refrigerant and drain piping completely to prevent condensation.
Pipe length 20 m max.
Height difference 12 m max.
No. of bends 10 max.
• Refrigerant adjustment … If pipe length exceeds 7 m, additional refrigerant (R410A) charge is required.
(The outdoor unit is charged with refrigerant for 7 m pipe length.)
Pipe length
Refrigerant to be added
PIPING PREPARATION
1 Table below shows the specifications of pipes commercially available.
Pipe Outside diameter Insulation thickness Insulation material
For liquid 6.35 mm 8 mm Heat resisting foam plastic
For gas 9.52 mm 8 mm 0.045 specific gravity
• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm. Never use any pipe with a
thickness less than 0.8 mm, as the pressure resistance is insufficient.
2 Ensure that the 2 refrigerant pipes are well insulated to prevent condensation.
3 Refrigerant pipe bending radius must be 100 mm or more.
Caution:
Be sure to use the insulation of specified thickness. Excessive thickness may cause incorrect installation of the indoor unit and lack of thickness may cause dew drippage.
Limits
Up to 7 m No additional charge is required.
Exceeding 7 m
Additional charge is required.
(Refer to the table below.)
30 g/m × (refrigerant piping length (m) -5)
4-1 A CASE OF SUSPENDING INDOOR UNIT FROM THE CEILING
4-1-(1) MOUNTING INSTALLATION PLATE FIXING BOLTS
1. Determine the locations of installation plate fixing bolts.
• Use installation pattern to determine the locations of instal-
lation plate fixing bolts J.
a Installation pattern
Details are printed on pattern.
Attention: Surrounding temperature and humidity conditions
may cause paper pattern to shrink or expand.
(Measure dimensions before drilling holes.)
2. Suspension structure (Give site of suspension strong structure).
■ Wood structure
• Select tie beam (one-story houses) or second-floor
girder (two story houses) as reinforcement member.
• Use sturdy beams of at least 60 mm square for beam
pitch of 900 mm or less or of at least 90 mm square for
beam pitch of 900-1800 mm.
a Pitch b Ceiling
c Rafter d Bracket
e Roof beam
■ Ferroconcrete Structures
• Secure installation plate fixing bolts J as shown at the
right or use angle-stock bracework to install installation plate fixing bolts J.
f Use inserts rated at 100-150 kg each
g Steel reinforcing rod
J Installation plate fixing bolts
*Remove installation pattern after installation.
3. Installation plate fixing bolts pitch.
• Use the installation plate fixing bolts J M10 (× 4 procure
locally).
a Indoor unit b Air outlet
1 Installation plate
• Projecting dimension of installation fixing bolts J from hori-
zontal base line against which you fix installation plate 1
as within at the right.
c Horizontal base line 1 Installation plate
J Installation fixing bolts
4
max. 40 mm
FRONT
4-1-(2) FIXING OF INSTALLATION PLATES
1
1028 mm
1
a
J
a
K-1
K-2
1
K-2
K-3
1
K-2
K-3
J
a
a
1
b
c
0
115
188
132
124
0
Ø40
Ø75
a
e
f
d
188
193
199
204
115
155
0
100
200
300
FRONT
1. Set installation plates to installation plate fixing bolts.
• Set installation plates 1 to installation plate fixing bolts J
so that the distance between insides of installation plates
is adjusted to length as shown in the right.
1 Installation plate
• Installation plates 1 should be fixed on one way direction,
as shown in Fig. 1.
Don’t fix as shown in Fig. 2.
• Be sure to confirm letters “FRONT” in installation plates 1,
set “FRONT” side to air outlet side of indoor unit.
a “FRONT”
1 Installation plate
2. In case of fixing installation plates 1 above the ceiling, put
installation plates fixing bolt through a nut, a spring washer,
the installation plate, a spring washer, and double nut. (Fig. 3)
In case of fixing installation plates 1 forward the ceiling
directly, also put installation plate fixing bolt through the installation plate, a spring washer, and double nuts. (Fig. 4)
a Ceiling K-1 Nut (M10)
1 Installation plate K-2 Spring washer
J Installation plate fixing bolt K-3 Double nut (M10)
(Fig. 1) (Fig. 2)
(Fig. 3) (Fig. 4)
4-1-(4) FRONT GRILLE REMOVAL
• Remove front grille and transportation support.
Remove 3 screws
Front grille
4-1-(5) OPENING KNOCKOUT HOLE
• Remove knockout holes with hammering it.
Knockout hole
Transportation support
* After installing com-
pletely, please remove
this part because this is
used for transportation
only.
3. Check that the four corners are horizontal with level gauge.
Knockout hole for drain pipe
(Fig. 5)
a Level gauge
4-1-(6) FIXING UNIT TO INSTALLATION PLATES
1. Suspending unit from installation plates.
• Hoist unit so that hanging bolt (4) on the sides of unit fit into holes in installation plates 1.
Unit fixing screw 2
4-1-(3) DRILLING HOLE
Determine the locations of holes for refrigerant pipe A and drain
(Fig. 5)
pipe D.
• Use the installation pattern as mentioned in 4-1-(1).
Unit fixing screw 2
• Be sure to confirm the dimensions as shown in the right.
a Horizontal base line b Hole for refrigerant pipe
c Hole for drain pipe
1 Installation plate
• Specially, drill the hole for drain pipe with designate dimen-
(unit : mm)
sion to keep an inclination.
d Horizontal base line e Hanging bolt
f Wall
(unit : mm)
2. Securing unit to installation plates.
• Be sure to tighten unit fixing screw 2 to unit securely.
5
Hanging bolt
• Be sure to set hanging bolt
in this position to keep
unit’s inclination.
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