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SG79Y330H01
SPLIT-TYPE AIR CONDITIONERS
Models
IMPORTANT NOTES
MSZ-A18 YV
TO COMPLY WITH THE REQUIREMENTS
HFC
MSZ-A24 YV Series
utilized
OF AUSTRALIAN STANDARD AS 3000 S.A.A.
WIRING RULES, THE ELECTRICAL WIRING
MSZ-A26 YV
R410A
REQUIRED BETWEEN THE INDOOR AND
MSZ-A30 YV
INSTALLATION MANUAL
OUTDOOR UNITS MUST BE INSTALLED BY
[FLARE CONNECTION TYPE]
A LICENCED ELECTRICAL CONTRACTOR.
When installing an MXZ series outdoor unit, refer to the MSZ type manual for indoor unit set up.
1. THE FOLLOWING SHOULD ALWAYS BE
CAUTION
I Earth the unit.
OBSERVED FOR SAFETY
Do not connect the earth to a gas pipe, water pipe, lightning rod or telephone
earth. Defective earthing could cause an electric shock.
•
Be sure to read "THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR
I Do not install the unit in a place where an inflammable gas leaks.
SAFETY" before installing the air conditioner.
•
If gas leak and accumulate in the area surrounding the unit, it could cause an
Be sure to observe the cautions specified here as they include important items
explosion.
related to safety.
•
I Install an earth leakage breaker depending on the installation place
The indications and meanings are as follows.
(Where it is humid).
WARNING
If an earth leakage breaker is not installed, it could cause an electric shock.
Could lead to death, serious injury, etc.
I 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
CAUTION
and household goods could be wet and damaged.
Could lead to serious injury in particular environments when operated incorrectly.
I Fasten a flare nut with a torque wrench as specified in this manual.
•
After reading this manual, be sure to keep it together with the OPERATING
When fastened too tight, a flare nut may broken after a long period and cause
INSTRUCTIONS in a handy place on the customer's site.
a leakage of refrigerant.
WARNING
2. SELECTING THE INSTALLATION LOCATION
I Do not install the unit by yourself (customer).
Incomplete installation could cause injury due to fire, electric shock, the unit
2-1 INDOOR UNIT
falling or leakage of water. Consult the dealer from whom you purchased the
•
Where airflow is not blocked.
unit or special installer.
•
Where cool air spreads over the entire room.
I Install the unit securely in a place which can bear the weight of the unit.
•
Maximum refrigerant piping length between indoor unit and outdoor unit is 30 m
When installed in an insufficient strong place, the unit could fall causing injury.
and the difference of height of both units is 15 m.
•
I Use the specified wires to connect the indoor and outdoor units securely
Rigid wall without vibration.
•
Where it is not exposed to direct sunshine.
and attach the wires firmly to the terminal block connecting sections so
•
Where easily drained.
the stress of the wires is not applied to the sections.
•
At a distance 1 m or more away from your TV and radio. Operation of the air
Incomplete connecting and fixing could cause fire.
conditioner interferes with radio or TV reception in areas where reception is weak.
I Do not use intermediate connection of the power cord or the extension
An amplifier may be required for the affected device.
•
cord and do not connect many devices to one AC outlet.
In a place as far away as possible from fluorescent and incandescent lights (so
It could cause a fire or an electric shock due to defective contact, defective
the infrared remote control can operate the air conditioner normally).
•
insulation, exceeding the permissible current, etc.
Where the air filter can be removed and replaced easily.
•
The distance between the floor and the bottom of the unit should be 1.8 m or more.
I Check that the refrigerant gas do not leak after installation has com-
pleted.
2-2 OUTDOOR UNIT
•
If refrigerant gas leaks indoors, and comes into contact with the fire of a fan
Where it is not exposed to strong wind.
heater, space heater, stove, etc., harmful substances will be generated.
•
Where airflow is good and dustless.
•
I Perform the installation securely referring to the installation manual.
Where it is not exposed to rain and direct sunshine.
•
Where neighbours are not annoyed by operation sound or hot air.
Incomplete installation could cause a personal injury due to fire, electric
•
Where rigid wall or support is available to prevent the increase of operation sound
shock, the unit falling or leakage of water.
or vibration.
I Perform electrical work according to the installation manual and be sure
•
Where there is no risk of combustible gas leakage.
•
to use an exclusive circuit.
When installing the unit at a high level, be sure to fix the unit legs.
If the capacity of the power circuit is insufficient or there is incomplete
•
Where it is at least 3 m away from the antenna of TV set or radio. Operation of the
electrical work, it could result in a fire or an electric shock.
air conditioner interferes with radio or TV reception in areas where reception is
weak. An amplifier may be required for the affected device.
I Attach the electrical cover to the indoor unit and the service panel to the
•
Install the unit horizontally.
outdoor unit securely.
•
Please install it in an area not affected by snowfall or blowing snow. In areas with
If the electrical cover in the indoor unit and/or the service panel in the outdoor
heavy snow, please install a canopy, a pedestal and/or some baffle boards.
unit are not attached securely, it could result in a fire or an electric shock due
Note:
to dust, water, etc.
It is advisable to make a piping loop near outdoor unit so as to reduce vibration
I Be sure to use the part provided or specified parts for the installation
transmitted from there.
work.
CAUTION
The use of defective parts could cause an injury or leakage of water due to a
Avoid the following places for installation where air conditioner trouble is liable to occur.
fire, an electric shock, the unit falling, etc.
•
Where flammable gas could leak.
I Be sure to cut off the main power in case of setting up the indoor
•
Where there is much machine oil.
electronic control P.C. board or wiring works.
•
Salty places such as the seaside.
It could cause an electric shock.
•
Where sulfide gas is generated such as a hot spring.
I The appliance shall be installed in accordance with national wiring
•
Where there is high-frequency or wireless equipment.
regulations.
2-3 WIRELESS REMOTE CONTROLLER MOUNTING
I When installing or relocating the unit, make sure that no substance
•
Place of mounting
other than the specified refrigerant (R410A) enters the refrigerant circuit.
• Where it is easy to operate and easily visible.
Any presence of foreign substance such as air can cause abnormal pressure
• Where children can not touch.
rise or an explosion.
•
Mounting
Select a position about 1.2 m above the floor, check that signals from the remote
controller are surely received by the indoor unit from that position ('beep' or 'beep-
beep' receiving tone sounds). After that, attach remote controller holder 3 to a
pillar or wall and set the wireless remote controller 6.
In rooms where inverter type fluorescent lamps are used, the signal from the
wireless remote controller may not be received.
3. INSTALLATION DIAGRAM & ACCESSORIES
PIPING PREPARATION
1 Specifications
FLARED CONNECTIONS
Use the refrigerant pipes that meet the following specifications.
•
This unit has flared connections on both indoor and outdoor sides.
Outside diameter
Insulation thickness
•
Pipe
Remove the outdoor units valve cover, then connect the pipe.
mm
mm
•
Refrigerant pipes are used to connect the indoor and outdoor units.
•
A18/A24
6.35
8
Be careful not to crush or bend the pipe in pipe bending.
For liquid
A26/A30
9.52
8
Limits
MSZ-A18/A24/A26/A30
A18
12.7
8
For gas
Pipe length
30 m max.
A24/A26/A30
15.88
8
Height difference
15 m max.
• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm (for
No. of bends
10 max.
ø6.35, 9.52) or 1.0 mm (for ø12.7, ø15.88). Never use any pipe with a thickness less
than 0.8 mm (for ø6.35, 9.52) or 1.0 mm (for ø12.7, ø15.88), as the pressure
•
Refrigerant adjustment ... If pipe length exceeds 7 m, additional refrigerant (R-
resistance is insufficient.
2 Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
410A) charge is required.
(The outdoor unit is charged with refrigerant for pipe length up to 7 m.)
3 Refrigerant pipe bending radius must be 100 mm or more.
Up to 7 m
No additional charge is required.
CAUTION
Pipe length
Additional charge is required.
Be sure to use the insulation of specified thickness. Excessive thickness may cause
Exceeding 7 m
(Refer to the table below.)
incorrect installation of the indoor unit and lack of thickness may cause dew drippage.
20 g/m × (refrigerant piping length (m) -7)
MSZ-A18
Decide the installation position using mark on the installation
20 g/m × (refrigerant piping length (m) -7)
Refrigerant to
MSZ-A24
plate indicating the indoor unit size as reference.
be added
MSZ-A26
55 g/m × (refrigerant piping length (m) -7)
55 g/m × (refrigerant piping length (m) -7)
MSZ-A30
ACCESSORIES
Check the following parts before installation.
<Indoor unit>
1
Installation plate
1
2
Installation plate fixing screw 4 × 25 mm
7
3
Remote controller holder
1
4
Fixing screw for 3 3.5 × 16 mm (Black)
2
1
5
Battery (AAA) for remote controller
2
6
Wireless remote controller
1
7
Felt tape (Used for left or left-rear piping)
1
2
Piping can be directed towards rear,
8
Air cleaning filter
2
right, downward, left or left-rear
directions.
D
PART TO BE PROVIDED AT YOUR SITE
8
H
Rear side
Right
Optional extension pipe
Indoor/outdoor unit connecting wire
A
1
Rear
(2-core 1.0 mm
2
-2.0 mm
2
)
C
1800 mm or more
Downward
B
7
Extension pipe
1
from the floor
C
Wall hole sleeve
1
Note: Do not
8
B
D
Wall hole cover
1
obstruct the
air outlet.
Pipe fixing band (The quantity depends
G
E
2 to 5
on the pipe length.)
Fixing screw for E 4 × 20 mm (The
6
F
2 to 5
quantity depends on the pipe length.)
3
G
Piping tape
1
H
Putty
1
E
F
Drain hose (or soft PVC. hose, 15 mm
I
1
Separate the 2 connecting pipes and
4
inner dia. or hard PVC pipe VP16)
apply insulation individually.
J
Refrigeration oil
1
Power supply cord (See the table in 5
5
INDOOR/OUTDOOR WIRE CONNECTION
K
1
AND OUTDOOR POWER SUPPLY CORD
CONNECTION for the cord size.)
8 mm thickness thermal insulation
plastic
K
840 mm
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
A
tape around the piping.
Air outlet
100 mm
500 mm
4-10 mm × 21 mm slot
Units should be installed by licensed contractor
according to local code requirement.
4-3 CONNECTING WIRE SPECIFICATIONS
4. INDOOR UNIT INSTALLATION
•
Use special room air conditioning circuit.
4-1 FIXING OF INSTALLATION PLATE
Power supply cord length
•
Find a structural material (such as a stud) in the wall and fix installation plate
(Lead to left/Lead to right)
horizontally.
72 mm or more
Indoor/outdoor unit connecting
100 mm or more for left
wire Specification
and left back piping (using
Bind the line to the center hole.
spacer)
•
Take out power supply cord from the left or right bottom corner of the indoor unit.
Connect to the power switch which has a gap of 3 mm or more when open to
interrupt the source power phase.
(When the power switch is shut off, it must interrupt all phases.)
(Rated Voltage : 230 V)
(Input capacity Main switch/Fuse : 10 A)
1800 mm or more
(This plug has to be the one meets the Standards.)
from the floor
Power supply cord
Installation
Installation
Plumb
plate fixing
Align the plumb line
plate 1
screw 2
with the mark
.
4 × 25 mm
To prevent the installation plate from vibrating, be sure to fix the holes
as indicated by the arrows c.
Never cut the indoor and outdoor unit connecting wire and connect it to other wires.
It may cause a fire.
When bolts recessed in the concrete wall are to be utilized, secure the installation
plate 1 using 11 × 20 · 11 × 26 oval hole (450 mm pitch).
Do not bundle the spare wire, but put it as shown below.
If the recessed bolt is too long, change it for a shorter one available in the market.
4-2 WALL HOLE DRILLING
1 Determine the wall hole position.
2 Drill a 75 mm hole so that outside can be lower than inside.
3 Insert the wall hole sleeve C.
Positioning of the holes on the wall
4-4 INDOOR AND OUTDOOR CONNECTING WIRE CON-
NECTION
Installation plate 1
100 mm
You can connect indoor/outdoor lead wire without removing the front panel.
1 Open the front panel.
2 Remove one screw holding the electrical cover, then remove the cover.
3 Remove the VA clamp and the cord clamp.
4 Pass the indoor/outdoor unit connecting wire from the back of the indoor unit and
Insert the scale.
process the end of the wire, then connect it to the terminal block.
5 Replace the fixture and electrical cover securely.
Indoor
Hole of dia.
terminal block
75 mm
Align the scale with the line.
Repeat the same procedure for the left hole.
Wall hole
Wall thickness
75 mm dia.
One scale
Cut with 1 extra
scale length.
(Indoor side)
(Wall hole cross section)
Wall hole sleeve C
Indoor/outdoor unit connecting wire A
Be sure to use wall hole sleeve C to prevent the outdoor connecting wires from
contacting with metal part in the wall and to prevent damage by rat in case the wall
is hollow.
•
Use the indoor/outdoor unit connecting wire that meets the Standards to connect
the indoor and outdoor units and fix the wire to the terminal block securely so that
no external force is conveyed to the connecting section of the terminal block.
Wall hole sealing and fixing pipe to wall
Incomplete connection or fixing of the wire could result in a fire.
•
Attach the electrical cover securely. If it is attached incorrectly, it could result in a
fire or an electric shock due to dust, water, etc.
Wall hole cover D
Cut off the
Seal the wall hole
extra length.
Pipe fixing
gap with putty H.
Loosen terminal
band E
screw.
Fix the pipe to wall with
pipe fixing band E.
Indoor unit
Fixing screw F
Wall hole
Terminal
sleeve C
block
<Connection details>
3 Putting nut on
6. INDOOR/OUTDOOR UNIT CONNECTION
• Remove flare nuts attached to indoor and outdoor
FINISHING AND TEST RUN
units, then put them on pipe having completed
burr removal.
INSTALLATION INFORMATION FOR THE AIR CONDI-
(not possible to put them on after flaring work)
TIONER WITH R410A REFRIGERANT
Insulation material
• Flare nut for R410A pipe differs from R22 pipe.
•
This room air conditioner adopts an HFC refrigerant (R410A) which will never destroy
Refer to the following table for detail.
the ozone layer.
Heat resisting
mm
•
Pay particular attention to the following points, though the basic installation procedure
foam plastic
ø6.35
is same as that for R22 air conditioners.
0.045 specific
1 As R410A has a working pressure approx. 1.6 times as high as that of R22, some
ø9.52
gravity
special tools and piping parts / materials are required. (Refer to the table below.)
ø12.7
2 Take sufficient care not to allow water and other contaminations to enter the
ø15.88
R410A refrigerant during storage and installation, since it is more susceptible to
contaminations than R22.
3 For refrigerant piping, use clean, pressure-proof parts / materials specifically
4 Flaring work
designed for R410A. (Refer to 2. Refrigerant piping.)
4 Composition change may occur in R410A since it is a mixed refrigerant. When
• Carry out flaring work using flaring tool as shown below.
charging, charge liquid refrigerant to prevent composition change.
Flaring tool
6-1 Tools dedicated for the air conditioner with R410A
refrigerant
The following tools are required for R410A refrigerant. Some R22 tools can be
substituted for R410A tools.
Clutch type
The diameter of the service port on the stop valve in outdoor unit has been changed to
prevent any other refrigerant being charged into the unit. (Cap size has been changed
from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.)
Outside diameter
R410A tools
Can R22 tools be used?
Description
ø6.35 mm
R410A has high pressures beyond the meas-
urement range of existing gauges.
ø9.52 mm
Gauge manifold
No
Port diameters have been changed to prevent
ø12.7 mm
any other refrigerant from being charged into the
unit.
Be careful the
ø15.88 mm
drain hose is not
Hose material and cap size have been changed
raised.
Charge hose
No
to improve the pressure resistance.
• Firmly hold copper pipe in a die in the dimension shown in the table above.
Gas leak detector
No
Dedicated for HFC refrigerant.
5 Check
Yes
1/4 and 3/8
Torque wrench
No
1/2 and 5/8
• Compare the flared work with figure below.
Clamp bar hole has been enlarged to reinforce
• If flare is noted to be defective, cut off the flared section and do flaring work again.
Flare tool
Yes
the spring strength in the tool.
Provided for flaring work (to be used with R22
Flare gauge
New
flare tool).
Front
Provided to prevent the back flow of oil. This
Vacuum pump
New
adapter enables you to use existing vacuum
adaptor
pumps.
Electronic scale
It is difficult to measure R410A with a charging
Left
for refrigerant
New
cylinder because the refrigerant bubbles due to
charging
Left-rear
high pressure and high-speed vaporization.
No: Not substitutable for R410A Yes: Substitutable for R410A
Lock the catch.
6-3 PIPE CONNECTION
6-2 FLARING WORK
Note:
•
Main cause of gas leakage is defect in flaring work.
Fasten a flare nut with a torque wrench as specified in the table below.
Carry out correct flaring work in the following procedure.
When fastened too tight, a flare nut may broken after a long period and cause a leakage
of refrigerant.
1 Pipe cutting
1 Indoor unit connection
Connect both liquid and gas pipings to indoor unit.
•
• Cut the copper pipe correctly with pipe cutter.
Apply a thin coat of refrigeration oil J on the seat surface of pipe.
•
For connection first align the center, then tighten the first 3 to 4 turns of flare nut.
•
No good
Use tightening torque table below as a guideline for indoor unit side union joint
Good
section, and tighten using two wrenches. Excessive tightening damages the flare
Copper pipe
Tilted
Uneven
Burred
90°
section.
Pipe diameter
ø6.35 mm
ø9.52 mm
ø12.7 mm
2 Burrs removal
ø15.88 mm
• Completely remove all burrs from the cut cross section of pipe.
2 Outdoor unit connection
• Put the end of the copper pipe to downward direction as you remove burrs in order to
Connect pipes to stop valve pipe joint of the outdoor unit in the same manner applied for
avoid to let burrs drop in the piping.
indoor unit.
•
For tightening, use a torque wrench or spanner and use the same tightening torque
Copper pipe
Burr
applied for indoor unit.
Spare
INSULATION AND TAPING
reamer
1 Cover piping joints with pipe cover.
Pipe
2 For outdoor unit side, surely insulate every piping including valves.
cutter
3 Using piping tape G, apply taping starting from the entry of outdoor unit.
•
Stop the end of piping tape G with tape (with adhesive agent attached).
•
When piping have to be arranged through above ceiling, closet or where the
temperature and humidity are high, wind additional commercially sold insulation for
prevention of condensation.
CAUTION
•
Be careful not to make mis-wiring.
•
Firmly tighten the terminal screws to prevent them from loosening.
•
After tightening, pull the wires lightly to confirm that they do not move.
1 m/2 m
•
If the connecting wire is incorrectly connected to the terminal block, the unit does
not operate normally.
Cable 2-core 1.0 mm
2
, in conformity
•
If an earth is incorrect, it may cause an electric shock.
with Design 245 IEC 57.
4-5 AUTO RESTART FUNCTION
•
When the units of these models are shipped from the factory, auto restart function is
set to ON. If you want to know how to release this function, consult the service
center.
•
When the indoor unit is controlled with the remote controller, the operation mode, the
set temperature, and the fan speed are memorized by the indoor electronic control
P.C. board. The auto restart function sets to work the moment the power has restored
after power failure, then, the unit will restart automatically. If the unit is operated in "I
Green/Yellow : Earth
FEEL CONTROL" mode before power failure, the operation is not memorized. In "I
Blue : N
FEEL CONTROL" mode, the operation is decided by the initial room temperature at
Brown : L
(re)start.
Operation
WARNING
1 If the main power (230V AC) has been cut, the operation settings remain.
2 When three minutes have passed after power was restored, the unit will restart
automatically according to the memory.
Notes:
• The operation settings are memorized when 10 seconds have passed after the
remote controller was operated.
• If the main power is turned off or a power failure occurs while AUTO START/STOP
timer is active, the timer setting is cancelled. As these models are equipped with the
auto restart function, the air conditioner should start operating at the same time that
a power has restored.
• If the unit has been off with the remote controller before power failure, the auto
restart function does not work as the power button of the remote controller is off.
• To prevent breaker off due to the rush of starting current, systematize other home
appliances not to turn on at the same time.
4-6 PIPE FORMING
•
Place the drain hose below the refrigerant piping.
•
Make sure that the drain hose is not heaved or snaked.
•
Do not pull the hose to apply the tape.
•
When the drain hose passes the room, be sure to wrap insulation material (obtain-
able at a store) around it.
•
Wrap the felt tape 7 around the pipe and the drain hose, then put the pipe in the
VA clamp
ELECTRICAL COVER
back space of the indoor unit.
Liquid pipe
Fixing screws
Gas pipe
Drain hose
Indoor/outdoor unit
Felt tape 7
connecting wire A
Never fail to hook the left claw on
the wire fixture to secure indoor/
outdoor unit connecting wire A.
FOR REAR, RIGHT OR DOWNWARD PIPING
Securely push the wire into
•
the terminal block until no
Pipe arrangement
part of its core is appeared.
Put the refrigerant piping and the drain hose together, then apply piping tape G to
them.
WARNING
Be careful drain hose is not
Firmly apply piping tape G
heaved.
from the end.
3 N
Indoor terminal block
Cut off in case of right piping.
Cut off in case of downward piping.
•
Insert the piping and the drain hose into the wall hole sleeve C, and hook the upper
Indoor/outdoor unit
connecting wire A
15 mm
part of the indoor unit on the installation plate 1.
2-core 1.0 mm
2
•
Check if the indoor unit is hooked securely on the installation plate 1 by moving the
35 mm
unit to left and right.
•
Thrust the lower part of the indoor unit into the installation plate 1.
Lead wire
3 N
Outdoor terminal block
6-4 PURGING PROCEDURES·LEAK TEST
Flare nut
PURGING PROCEDURES
Copper pipe
Connect the refrigerant pipes (both liquid pipe and the gas pipe) between the indoor
and the outdoor unit.
Remove the service port cap of the stop valve on the side of the outdoor unit gas
inch
R410A
R22
pipe. (The stop valve will not work in it initial state fresh out of the factory (totally
1/4
17
17
closed with cap on).)
3/8
22
22
Connect the gauge manifold valve and the vacuum pump to the service port of the
1/2
26
24
stop valve on the gas pipe side of the outdoor unit.
5/8
29
27
Run the vacuum pump. (Vacuumize for more than 15 minutes.)
Check the vacuum with the gauge manifold valve, then close the gauge manifold
valve, and stop the vacuum pump.
A
Leave as it is for one or two minutes. Make sure the pointer gauge manifold valve
York
remains in the same position. Confirm that the pressure gauge shows–0.101 Mpa
Die
[Gauge] (–760 mmHg).
Die
Compound pressure
Copper pipe
-0.101MPa
Copper pipe
Stop valve
(-760 mmHg)
gauge (for R410A)
Wing nut type
Flare nut
Pressure gauge
A (mm)
(for R410A)
*Close
Stop valve
Gauge manifold
Flare tool for R410A
Conventional flare tool
*Open
valve (for R410A)
clutch type
Clutch type
Wing nut type
Handle High
Handle
Low
Charge hose
0 to 0.5
1.0 to 1.5
1.5 to 2.0
Hexagonal wrench
Stop
(for R410A)
valve
0 to 0.5
1.0 to 1.5
1.5 to 2.0
Vacuum
Service port
pump
0 to 0.5
1.0 to 1.5
2.0 to 2.5
Window
Adapter for
0 to 0.5
1.0 to 1.5
2.0 to 2.5
Charge hose
preventing
*4 to 5 turns
(for R410A)
the back flow
Remove the gauge manifold valve quickly from the service port of the stop valve.
After refrigerant pipes are connected and evacuated, fully open all stop valves on
both sides of gas pipe and liquid pipe.
Operating without fully opening lowers the performance and this causes trouble.
Smooth all around
Inside is shining without any scratches.
Pipe length up to 7 m
Pipe length exceeding 7 m
No gas charge is needed.
Charge the prescribed amount
of gas. (refer to 3)
Tighten the cap to the service port to obtain the initial status.
Even length
all around
Retighten the cap.
Leak test
Tightening torque
N·m
kgf·cm
Cap for service port
13.7 to 17.7
140 to 180
Cap for stop valve
19.6 to 29.4
200 to 300
Tightening torque
N·m
kgf·cm
13.7 to 17.7
140 to 180
34.3 to 41.2
350 to 420
49.0 to 56.4
500 to 575
73.5 to 78.4
750 to 800
FOR LEFT OR LEFT-REAR PIPING
4 Insert the drain hose into the section to which the drain hose is
to be attached at the rear right of the indoor unit.
•
Pipe arrangement
Put the refrigerant piping and the drain hose together, then apply felt tape 7 to them.
Insert the drain hose fully into the drain pan. Check if the hose is hooked securely to
the projection of its inserting part at the drain pan.
Be careful drain
hose is not heaved.
Cut off in case of left piping.
INDOOR UNIT INSTALLATION
•
Insert the drain hose into the wall hole sleeve C, and hook the upper part of
indoor unit on the installation plate 1. Then, move the unit to the very edge of the
left side for putting the piping easily in the back space of the indoor unit. After that,
Use a bandage stopper at
cut the part of packing material (spacer assembly) to hook it on the back rib and
Felt tape 7
the end of felt tape 7.
lift the indoor unit as shown in the figure below.
Firmly apply felt tape 7 from the end.
Cut part of packing material (spacer assembly) to
(Felt tape 7 overlap width should be 1/3
hook it on the back rib.
the tape width.)
REATTACHING DRAIN HOSE
Spacer assembly
Be sure to reattach the drain hose and the drain cap in case of left or left-rear piping.
Otherwise, it could cause drops of water to drip down from the drain hose.
Securely attach the spacer
assembly in the concave part
of the rib, taking care its
direction is correct as shown in
the right.
Drain cap
•
Connect the refrigerant piping with the extension pipe B.
•
Thrust the lower part of the indoor unit into the installation plate 1.
4-7 DRAIN PIPING
•
1 Pull out the drain cap at the rear right of the indoor unit.
The drain hose should point downward for easy drain flow. (Fig. 1)
Do not make drain piping as shown in Fig. 2 to 5.
Hold the convex section at the end and pull the drain cap.
Drain cap
Downward
slope
Water
leakage
2 Pull out the drain hose at the rear left of the indoor unit.
(Fig. 1)
Hold the claw marked by the arrow and pull out the drain hose forward.
Tip of drain
hose dipped
in water.
Drain hose
Water
leakage
Ditch
3 Put the drain cap into the section to which the drain hose is to be
(Fig. 4)
attached at the rear of the indoor unit.
•
If the drain hose provided with the indoor unit is too short, connect it with drain
Insert the screwdriver, etc. (not sharp-edged tool) into the hole at the end of the cap and
hose I that should be provided at your site.
insert the cap fully into the drain pan.
•
If the extension drain hose has to pass through a room, be sure to wrap it with
commercially sold insulation.
Drain cap
6-5 TEST RUN
7. FOR MOVEMENT AND MAINTENANCE
•
Before performing the test run, recheck any wrong wiring.
Wrong wiring prevents normal operation or results in blown fuse disabling operation.
7-1 REMOVING AND REINSTALLING THE FRONT PANEL
•
The test run can be started by pressing EMERGENCY OPERATION switch. When the
EMERGENCY OPERATION switch is once pressed, the unit will start the test run (con-
FRONT PANEL REMOVAL
tinuous operation) for 30 minutes.
A thermostat does not work during this time. After 30 minutes the unit will start the
4 Release the hooks.
EMERGENCY OPERATION at a fixed temperature setting of 24°C in COOL MODE or
HEAT MODE.
•
Perform test run in the following procedure.
PROCEDURE
•
Press the EMERGENCY OPERATION switch.
1 Press it once, and after test run for 30 minutes the EMERGENCY COOL MODE starts.
1 Remove the screw caps.
2 Remove three screws.
3 Pull the bottom.
If the left side lamp of the operation indicator blinks every 0.5 seconds, inspect the
indoor/outdoor unit connecting wire A for mis-wiring.
FRONT PANEL REINSTALLATION
2 Press it once more, and the EMERGENCY HEAT MODE starts.
Note:
3 Press it once more, and the operation stops.
Do not open the front panel up beyond the level position.
(The operation mode changes in order of 1 ~ 3 every time the EMERGENCY
The panel may come off in order to prevent it from being damaged.
OPERATION switch is pressed.)
1 Set the horizontal vane to the position as below before reinstalling the front
Mode
Operation Indicator lamp
panel.
1 COOL
(Light)
(Off)
1 Point the
EMERGENCY
horizontal
OPERATION switch
vane slightly
2 HEAT
downward.
(Off)
(Light)
3 STOP
(Off)
(Off)
(or the vacuum
•
pump with the
In starting the heating operation, indoor unit fan may not operate to prevent blowing
2 Attach the bottom of the front panel under the horizontal vane.
function to
cool air. Please wait for a few minutes until the temperature of heat exchanger rises and
prevent the
3 Fit in the top of the front panel.
warm air blows out.
back flow)
4 Fit in the bottom of the front panel and tighten it using screws.
Checking the remote (infrared) signal reception
5 Push the section of the front panel marked by the arrow and fit the panel into the
air conditioner.
Press the ON/OFF button on the remote controller and check that an electronic sound is
heard from the indoor unit. Press the ON/OFF button again to turn the air conditioner off.
7-2 REMOVING THE INDOOR UNIT
If the indoor unit is operated with the remote controller, both the test
Remove the bottom of the indoor unit from the installation plate.
run and the emergency operation are released by commands from
the remote controller.
1 Remove the front panel. (See FRONT PANEL REMOVAL shown above.)
2 Insert flat screwdrivers into the square holes at the left and right bottom of the
•
Once the compressor stops, the restart preventive device operates so the compressor
indoor unit and push them up; the bottom of the indoor unit goes down and the
will not operate for three minutes to protect the air conditioner.
hooks are released.
6-6 EXPLANATION TO THE CUSTOMER
•
Using the OPERATING INSTRUCTIONS, explain the following to the customer, how to
control temperature, how to remove the air filters, how to remove or put the remote
controller in the remote controller holder, how to clean, precautions for operation, etc.
•
Recommend the customer to read the OPERATING INSTRUCTIONS carefully.
Square hole
5. OUTDOOR UNIT INSTALLATION
INDOOR/OUTDOOR UNIT CONNECTING WIRE CON-
NECTION AND OUTDOOR POWER SUPPLY CORD
CONNECTION
Drain hose
•
Connect the indoor/outdoor unit connecting wire A from the indoor unit correctly
on the terminal block.
•
For future servicing, give extra length to connecting wire.
Connect to the supply terminals and leave a contact
Rated Voltage Breaker capacity
separation of at least 3 mm at each pole to discon-
nect the source power pole. (When the power switch
230 V
20 A
is shut off, it must disconnect all poles.)
•
Peel off both ends of connecting wire (extension wire).
When too long, or connected by cutting off the middle,
peel off power supply wire to the size as shown in the
right.
15 mm
•
Be careful not to contact connecting wire with piping.
35 mm
•
Make earth wire a little longer than the others.
(more than 35 mm)
•
For the power supply cord and the indoor/outdoor unit connecting wires, be sure
to use the ones in compliance with the standards.
•
Be sure to push the core until it is hidden and pull each cable to make sure that it
is not pulled up incomplete insertion may cause a risk of burning the terminal
blocks.
3-core 2.5 mm
2
or more, in conformity
10 m or less
with Design 245 IEC 57.
Power supply cord
3-core 4.0 mm
2
or more, in conformity
15 m or less
Specification
with Design 245 IEC 57.
3-core 6.0 mm
2
or more, in conformity
25 m or less
with Design 245 IEC 57.
Spacer
Indoor and
Cable 2-core 1.0 mm
2
, in conformity with
Outdoor connecting
Design 245 IEC 57.
wire Specification
WARNING
•
A means for disconnection of the supply with an isolation switch, or similar
device, in all active conductors shall be incorporated in the fixed wiring.
•
Never cut the power cord and connect it to other wires.
It may cause a fire.
3 N
Indoor terminal block
Accumulated
Loosen terminal screw.
Do not raise.
drain water
Indoor/outdoor unit
Air
connecting wire A
2-core 1.0 mm
2
Water
Lead wire
3 N
Outdoor terminal block
leakage
Waving
L~
N~
Terminal block
(Fig. 2)
(Fig. 3)
<Connection details>
Drain
Power supply cord K
hose
CAUTION
•
Use care not to make mis-wiring.
Less than
•
Soft hose
Firmly tighten the terminal screws to prevent them from loosening.
50 mm gap
I.D.
•
After tightening, pull the wires lightly to confirm that they do not move.
15 mm or
•
If the connecting wire is incorrectly connected to the terminal block, the unit
hard vinyl
chloride
does not operate normally.
Be sure to fix the indoor/outdoor unit
connecting wire A and power supply
(Fig. 5)
cord K using this cord clamp.
Be sure to put the left
portion into the square
hole of the service panel.
Service panel
Fixing screws
Remove two fixing
screws to open the
service panel.
Valve cover
WARNING
Be sure to attach the service panel of the outdoor unit securely. If it is not attached
correctly, it could result in a fire or an electric shock due to dust, water, etc.
7-3 GAS CHARGE
1 Connect gas cylinder to the service port of stop valve (3-way).
2 Execute air purge of the pipe (or hose) coming from refrigerant gas cylinder.
3 Replenish specified amount of the refrigerant, while operating the air conditioner
for cooling.
Note:
In case of adding refrigerant, comply with the quantity specified for the refrigerating
cycle.
CAUTION
•
Do not discharge the refrigerant into the atmosphere.
Take care not to discharge refrigerant into the atmosphere during installation,
Hold this concave section and pull the bottom
forward to remove the front panel.
reinstallation, or repairs to the refrigerant circuit.
•
For additional charging, charge the refrigerant from liquid phase of the
gas cylinder.
If the refrigerant is charged from the gas phase, composition change may
occur in the refrigerant inside the cylinder and the outdoor unit. In this case,
ability of the refrigerating cycle decreases or normal operation can be
impossible. However, charging the liquid refrigerant all at once may cause the
compressor to be locked. Thus, charge the refrigerant slowly.
To maintain the high pressure of the gas cylinder, warm the gas cylinder with warm
3
water (under 40°C) during cold season. But never use naked fire or steam.
5 Push
Union
Stop valve
Indoor unit
Liquid pipe
Gas pipe
Outdoor unit
Refrigerant gas
2 4
cylinder
operating valve
Horizontal vane
Service port
Gauge manifold
valve (for R410A)
Charge hose (for R410A)
Refrigerant gas cylinder
for R410A with siphon
Refrigerant (liquid)
Electronic scale for
refrigerant charging
Push
Go down
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU,
TOKYO 100-8310, JAPAN
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