Mitsubishi Electric MSZ-A09YV SERIES Installation Manual

SG79Y281H07
SPLIT-TYPE AIR CONDITIONERS
Models
R410A
MSZ-A09/A12YV
Series
MUZ-A09/A12YV(H)
When installing an MXZ series
[FLARE CONNECTION TYPE] outdoor unit, refer to the MXZ type
INSTALLATION MANUAL
manual for outdoor 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.
•
Please provide an exclusive circuit for the air conditioner and do not connect other
I Do not install the unit in a place where an inflammable gas leaks.
electrical appliances to it.
• If gas leak and accumulate in the area surrounding the unit, it could cause an
Be sure to read "THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR
explosion.
SAFETY" before installing the air conditioner.
• Be sure to observe the cautions specified here as they include important items I Install an earth leakage breaker depending on the installation place
related to safety. (Where it is humid).
•
The indications and meanings are as follows. If an earth leakage breaker is not installed, it could cause an electric shock.
I Perform the drainage/piping work securely according to the installation
WARNING
manual.
Could lead to death, serious injury, etc.
If there is a defect in the drainage/piping work, water could drop from the unit
and household goods could be wet and damaged.
CAUTION I Fasten a flare nut with a torque wrench as specified in this manual.
Could lead to serious injury in particular environments when operated incorrectly. When fastened too tight, a flare nut may broken after a long period and cause
a leakage of refrigerant.
•
After reading this manual, be sure to keep it together with the OPERATING
INSTRUCTIONS in a handy place on the customer's site.
2. SELECTING THE INSTALLATION LOCATION
WARNING
2-1 INDOOR UNIT
I Do not install the unit by yourself (customer).
•
Incomplete installation could cause injury due to fire, electric shock, the unit Where airflow is not blocked.
•
Where cool air spreads over the entire room.
falling or leakage of water. Consult the dealer from whom you purchased the
•
Maximum refrigerant piping length between indoor unit and outdoor unit is 20 m
unit or special installer.
and the difference of height of both units is 12 m.
I Install the unit securely in a place which can bear the weight of the unit. •
Rigid wall without vibration.
When installed in an insufficient strong place, the unit could fall causing injury. • Where it is not exposed to direct sunshine.
•
I Use the specified wires to connect the indoor and outdoor units securely Where easily drained.
•
At a distance 1 m or more away from your TV and radio. Operation of the air
and attach the wires firmly to the terminal block connecting sections so
conditioner may interfere with radio or TV reception in areas where reception is
the stress of the wires is not applied to the sections.
weak. An amplifier may be required for the affected device.
Incomplete connecting and fixing could cause fire.
• In a place as far away as possible from fluorescent and incandescent lights (so
I Do not use intermediate connection of the power cord or the extension
the infrared remote control can operate the air conditioner normally).
•
cord and do not connect many devices to one AC outlet. Where the air filter can be removed and replaced easily.
It could cause a fire or an electric shock due to defective contact, defective
2-2 OUTDOOR UNIT
insulation, exceeding the permissible current, etc.
•
I Check that the refrigerant gas do not leak after installation has com- Where it is not exposed to strong wind.
•
pleted. Where airflow is good and dustless.
•
Where it is not exposed to rain and direct sunshine.
If refrigerant gas leaks indoors, and comes into contact with the fire of a fan
• Where neighbours are not annoyed by operation sound or hot air.
heater, space heater, stove, etc., harmful substances will be generated.
•
Where rigid wall or support is available to prevent the increase of operation sound
I Perform the installation securely referring to the installation manual.
or vibration.
Incomplete installation could cause a personal injury due to fire, electric •
Where there is no risk of combustible gas leakage.
shock, the unit falling or leakage of water. •
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
I Perform electrical work according to the installation manual and be sure
air conditioner may interfere with radio or TV reception in areas where reception is
to use an exclusive circuit.
weak. An amplifier may be required for the affected device.
If the capacity of the power circuit is insufficient or there is incomplete
• Install the unit horizontally.
electrical work, it could result in a fire or an electric shock.
Note:
I Attach the electrical cover to the indoor unit and the service panel to the
It is advisable to make a piping loop near outdoor unit so as to reduce vibration
outdoor unit securely.
transmitted from there.
If the electrical cover in the indoor unit and/or the service panel in the outdoor
CAUTION
unit are not attached securely, it could result in a fire or an electric shock due
to dust, water, etc. Avoid the following places for installation where air conditioner trouble is liable to
occur.
I Be sure to use the part provided or specified parts for the installation
•
Where flammable gas could leak.
work.
•
Where there is much machine oil.
The use of defective parts could cause an injury or leakage of water due to a
•
Salty places such as the seaside.
fire, an electric shock, the unit falling, etc. •
Where sulfide gas is generated such as a hot spring.
•
I Be sure to cut off the main power in case of setting up the indoor Where there is high-frequency or wireless equipment.
electronic control P.C. board or wiring works.
2-3 WIRELESS REMOTE CONTROLLER MOUNTING
It could cause an electric shock.
I The appliance shall be installed in accordance with national wiring •
Place of mounting
regulations. • Where it is easy to operate and easily visible.
• Where children can not touch.
•
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.
1
PIPING PREPARATION
3. INSTALLATION DIAGRAM & ACCESSORIES
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.
• For liquid 6.35 8
Be careful not to crush or bend the pipe in pipe bending.
For gas 9.52 8
Limits
• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm.
Pipe length 20 m max. Never use any pipe with a thickness less than 0.8 mm, as the pressure resistance
is insufficient.
Height difference 12 m max.
2 Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
No. of bends 10 max.
3 Refrigerant pipe bending radius must be 100 mm or more.
•
Refrigerant adjustment ... If pipe length exceeds 7 m, additional refrigerant
CAUTION
(R410A) charge is required.
Be sure to use the insulation of specified thickness. Excessive thickness may
(The outdoor unit is charged with refrigerant for pipe length up to 7 m.)
cause incorrect installation of the indoor unit and lack of thickness may cause
Up to 7 m No additional charge is required. dew drippage.
Pipe length Additional charge is required.
Exceeding 7 m
(Refer to the table below.)
Decide the installation position using mark on the installation
plate indicating the indoor unit size as reference.
30 g/m × (refrigerant piping length (m) -5)
Refrigerant to be added
ACCESSORIES
Check the following parts before installation.
<Indoor unit>
1 Installation plate 1
Installation plate fixing screw 4 × 25 mm The figure refers to A09 YV.
2 7
3 Remote controller holder 1
1 (A12YV)
4 Fixing screw for 3 3.5 × 16 mm (Black) 2
5 Battery (AAA) for remote controller 2
2
6 Wireless remote controller 1
7
Felt tape (Used for left or left-rear piping) 1
8 Air cleaning filter 2
<Outdoor unit: For YV type only>
Piping can be directed towards rear,
9 Drain socket 1
right, downward, left or left-rear
directions.
PART TO BE PROVIDED AT YOUR SITE
1 (A09YV) Rear side
Right
Optional extension pipe
Indoor/outdoor unit connecting wire
A
1 Rear
(4-core 1.0 mm 2 )
2
Downward
B Extension pipe 1
C Wall hole sleeve 1
D
Wall hole cover 1 D
8
Pipe fixing band (The quantity depends
E
2 to 5
on the pipe length.)
Fixing screw for E 4 × 20 mm (The
F 2 to 5
quantity depends on the pipe length.) H
7 C
G
Piping tape 1
6
H Putty 1
8 3
Drain hose (or soft PVC. hose, 15 mm
I 1 or 2
Separate the 2 connecting pipes and
inner dia. or hard PVC pipe VP16)
G
apply insulation individually.
J
Refrigeration oil 1
4
E
Basically open 100 mm
or more without any
800 mm 5
obstruction in front and
150 500 mm on both sides of the
mm unit. 8 mm thickness thermal insulation
F
Air inlet
plastic
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
Air outlet A I
between the wall and the piping or
40 mm
wrap 7 to 8 turns of insulation vinyl
2-10 mm × 21 mm slot
tape around the piping.
Note:
When operating the air conditioner in low outside temperature,
be sure to follow the instructions described below. B
• 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
Open two sides of left, right,
air inlet side facing the wall.
or rear side.
• To prevent exposure to wind, it is recommended to install a
baffle board on the air outlet side of the outdoor unit. Units should be installed by licensed contractor
according to local code requirement.
4-3 POWER SUPPLY AND CONNECTING WIRE SPECIFI-
4. INDOOR UNIT INSTALLATION
CATIONS
HFC
•
4-1 FIXING OF INSTALLATION PLATE Use special room air conditioning circuit.
utilized
•
Find a structural material (such as a stud) in the wall and fix installation plate
Power supply cord length
horizontally.
(Lead to left/Lead to right)
A09YV
Bind the line to the center hole. Indoor/outdoor unit connecting
79 mm or more
wire Specification
109 mm or more for left
and left back piping (using
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/Frequency : 230 V/50 Hz)
(Input capacity Main switch/Fuse:10 A)
Installation plate fixing
Installation Plumb Align the plumb line (This plug has to be the one meets the Standards.)
screw 2 4 × 25 mm
with the mark .
plate 1 Power supply cord
A12YV
Bind the line to the center hole.
79 mm or more
109 mm or more for left
and left back piping (using
spacer)
Never cut the indoor and outdoor unit connecting wire and connect it to other wires.
It may cause a fire.
Do not bundle the spare wire, but put it as shown below.
Installation Align the plumb line
Plumb
Installation plate fixing plate 1
with the mark .
screw 2 4 × 25 mm
To prevent the installation plate from vibrating, be sure to fix the holes
as indicated by the arrows c.
4-4 INDOOR AND OUTDOOR CONNECTING WIRE CON-
When bolts recessed in the concrete wall are to be utilized, secure the installation
NECTION
plate 1 using 11 × 20 · 11 × 26 oval hole (450 mm pitch).
If the recessed bolt is too long, change it for a shorter one available in the market.
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.
4-2 WALL HOLE DRILLING
3 Remove the VA clamp.
1 Determine the wall hole position.
4 Pass the indoor/outdoor unit connecting wire from the back of the indoor unit and
2 Drill a 75 mm hole so that outside can be lower than inside. process the end of the wire, then connect it to the terminal block.
3 Insert the wall hole sleeve C.
5 Replace the fixture and electrical cover securely.
Indoor
Positioning of the holes on the wall
terminal block
Installation plate 1 100 mm
Insert the scale.
Hole of dia.
75 mm
Align the scale with the line.
Repeat the same procedure for the left hole.
Wall hole
Wall thickness
Indoor/outdoor unit connecting wire A
75 mm dia. One scale
Cut with 1 extra
scale length. •
Use the indoor/outdoor unit connecting wire that meets the Standards to connect
(Indoor side) 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.
Incomplete connection or fixing of the wire could result in a fire.
(Wall hole cross section)
Wall hole sleeve C
•
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.
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.
Loosen terminal
screw.
Wall hole sealing and fixing pipe to wall
Wall hole cover D
Cut off the
Seal the wall hole
extra length. Pipe fixing
gap with putty H.
band E
Fix the pipe to wall with Terminal
pipe fixing band E. block
Indoor unit
Fixing screw F
Wall hole sleeve C
3 Putting nut on
6. INDOOR/OUTDOOR UNIT CONNECTION
FINISHING AND TEST RUN • Remove flare nuts attached to indoor and outdoor
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.
Heat resisting foam plastic the ozone layer.
0.045 specific gravity •
Pay particular attention to the following points, though the basic installation procedure
ø6.35
is same as that for R22 air conditioners.
1 As R410A has a working pressure approx. 1.6 times as high as that of R22, some ø9.52
special tools and piping parts / materials are required. (Refer to the table below.)
2 Take sufficient care not to allow water and other contaminations to enter the
4 Flaring work
R410A refrigerant during storage and installation, since it is more susceptible to
contaminations than R22. • Carry out flaring work using flaring tool as shown below.
3 For refrigerant piping, use clean, pressure-proof parts / materials specifically
designed for R410A. (Refer to 2. Refrigerant piping.)
4 Composition change may occur in R410A since it is a mixed refrigerant. When
charging, charge liquid refrigerant to prevent composition change.
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.
Outside diameter
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.)
ø6.35 mm
ø9.52 mm
R410A tools Can R22 tools be used? Description
R410A has high pressures beyond the meas-
• Firmly hold copper pipe in a die in the dimension shown in the table above.
urement range of existing gauges.
Gauge manifold No Port diameters have been changed to prevent
5 Check
Be careful the any other refrigerant from being charged into the
drain hose is not
unit.
raised.
• Compare the flared work with figure below.
Hose material and cap size have been changed
• If flare is noted to be defective, cut off the flared section and do flaring work again.
Charge hose No
to improve the pressure resistance.
Gas leak detector No Dedicated for HFC refrigerant.
Torque wrench Yes 1/4 and 3/8
Clamp bar hole has been enlarged to reinforce
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
6-3 PIPE CONNECTION
Left
for refrigerant
New cylinder because the refrigerant bubbles due to
charging
Left-rear high pressure and high-speed vaporization. Note:
No: Not substitutable for R410A Yes: Substitutable for R410A Fasten a flare nut with a torque wrench as specified in the table below.
Lock the catch. When fastened too tight, a flare nut may broken after a long period and cause a leakage
of refrigerant.
6-2 FLARING WORK
1 Indoor unit connection
•
Main cause of gas leakage is defect in flaring work.
Connect both liquid and gas pipings to indoor unit.
•
Carry out correct flaring work in the following procedure. 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.
•
Use tightening torque table below as a guideline for indoor unit side union joint
1 Pipe cutting
section, and tighten using two wrenches. Excessive tightening damages the flare
section.
• Cut the copper pipe correctly with pipe cutter.
Pipe diameter
No good
Good mm
Copper pipe Uneven Burred
90° Tilted
ø6.35
ø9.52
2 Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in the same manner applied for
indoor unit.
• For tightening, use a torque wrench or spanner and use the same tightening torque
2 Burrs removal
applied for indoor unit.
• Completely remove all burrs from the cut cross section of pipe. INSULATION AND TAPING
• Put the end of the copper pipe to downward direction as you remove burrs in order to
1 Cover piping joints with pipe cover.
avoid to let burrs drop in the piping.
2 For outdoor unit side, surely insulate every piping including valves.
3 Using piping tape G, apply taping starting from the entry of outdoor unit.
Copper pipe
Burr •
Stop the end of piping tape G with tape (with adhesive agent attached).
Spare •
When piping have to be arranged through above ceiling, closet or where the
reamer
temperature and humidity are high, wind additional commercially sold insulation for
prevention of condensation.
Pipe
cutter
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.
•
If the connecting wire is incorrectly connected to the terminal block, the unit does
0.3 m/1 m not operate normally.
•
If an earth is incorrect, it may cause an electric shock.
Cable 4-core 1.0 mm 2 , in conformity
with Design 245 IEC 57.
4-5 AUTO RESTART FUNCTION
•
These models are equipped with an auto restart function. If you do not want to use
this function, please consult the service representative because the setting of the unit
needs to be changed.
•
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
FEEL..." or "AUTO" mode before power failure, the operation mode (COOL, DRY or
Green/Yellow : Ground HEAT) is not stored in the memory. When the main power is turned on, the unit
Blue : N decides the operation mode by the initial room temperature at restart and starts
Brown : L
operation again.
Operation
WARNING
1 If the main power 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 an
auto restart function, the air conditioner starts operating with timer cancelled at the
same time that power is 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
ELECTRICAL COVER back space of the indoor unit.
VA clamp
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/ FOR REAR, RIGHT OR DOWNWARD PIPING
outdoor unit connecting wire A.
•
Pipe arrangement
Securely push the wire into
Put the refrigerant piping and the drain hose together, then apply piping tape G to
the terminal block until no
part of its core is appeared. them.
Firmly apply piping tape G
Be careful drain hose is not
WARNING heaved. from the end.
Cut off in case of right piping.
Cut off in case of downward piping.
Power supply cord
•
Insert the piping and the drain hose into the wall hole sleeve C, and hook the upper
L
part of the indoor unit on the installation plate 1.
3 N 2 Indoor terminal block •
Check if the indoor unit is hooked securely on the installation plate 1 by moving the
15 mm
Earth wire
unit to left and right.
35 mm
(green/yellow)
• Thrust the lower part of the indoor unit into the installation plate 1.
Indoor/outdoor unit
MSZ
connecting wire A
Lead wire
4-core 1.0 mm 2
MUZ
<Connection details>
3 N 2 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
mm 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
stop valve on the gas pipe side of the outdoor unit.
Run the vacuum pump. (Vacuumize for more than 15 minutes.)
Flaring tool A
Check the vacuum with the gauge manifold valve, then close the gauge manifold
valve, and stop the vacuum pump.
York
Die
Leave as it is for one or two minutes. Make sure the pointer gauge manifold valve
Die
remains in the same position. Confirm that the pressure gauge shows–0.101 Mpa
Copper pipe
[Gauge] (–760 mmHg).
Clutch type Copper pipe
Wing nut type Flare nut
A (mm)
-0.101MPa
Stop valve
(-760 mmHg)
Flare tool for R410A Conventional flare tool
clutch type Clutch type Wing nut type
*Close
Stop valve
0 to 0.5 1.0 to 1.5 1.5 to 2.0 *Open
0 to 0.5 1.0 to 1.5 1.5 to 2.0
Handle
Low
Hexagonal wrench Stop
valve
Service port
Window
Charge hose
*4 to 5 turns (for R410A)
Remove the gauge manifold valve quickly from the service port of the stop valve.
Smooth all around Inside is shining without any scratches.
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.
Even length
Pipe length up to 7 m Pipe length exceeding 7 m
all around
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.
Retighten the cap.
Leak test
Tightening torque
N·m
Cap for service port 13.7 to 17.7
Cap for stop valve 19.6 to 29.4
Tightening torque
N·m kgf·cm
13.7 to 17.7 140 to 180
34.3 to 41.2 350 to 420
FOR LEFT OR LEFT-REAR PIPING
INDOOR UNIT INSTALLATION
•
Insert the drain hose into the wall hole sleeve C, and hook the upper part of
•
Pipe arrangement
indoor unit on the installation plate 1. Then, move the unit to the very edge of the
Put the refrigerant piping and the drain hose together, then apply felt tape 7 to them.
left side for putting the piping easily in the back space of the indoor unit. After that,
cut a part of packing material, then roll it as shown below and use it as a spacer to
Be careful drain
hose is not heaved. hook on the back rib and lift the indoor unit.
Cut off in case of left piping.
Fix the end with
masking tape or
tape affixed on
Use a bandage stopper at the lower side of
Felt tape 7
the end of felt tape 7. indoor unit.
Firmly apply felt tape 7 from the end.
(Felt tape 7 overlap width should be 1/3
the tape width.)
REATTACHING DRAIN HOSE
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.
• 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
• The drain hose should point downward for easy drain flow. (Fig. 1)
Do not make drain piping as shown in Fig. 2 to 5.
Drain cap
Downward
slope
1 Pull out the drain cap at the rear right of the indoor unit.
Hold the convex section at the end and pull the drain cap.
Drain cap
(Fig. 1)
2 Pull out the drain hose at the rear left of the indoor unit.
Hold the claw marked by the arrow and pull out the drain hose forward.
Water
leakage
(Fig. 4)
•
If the drain hose provided with the indoor unit is too short, connect it with drain
Drain hose hose I that should be provided at your site.
•
If the extension drain hose has to pass through a room, be sure to wrap it with
3 Put the drain cap into the section to which the drain hose is to be commercially sold insulation.
attached at the rear of the indoor unit.
5. OUTDOOR UNIT INSTALLATION
Insert the screwdriver, etc. (not sharp-edged tool) into the hole at the end of the cap and
insert the cap fully into the drain pan.
5-1 INDOOR/OUTDOOR UNIT CONNECTING WIRE
CONNECTION
• 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.
• Peel off both ends of connecting wire (extension wire).
Drain cap
•
Be careful not to contact connecting wire with piping.
•
Make earth wire a little longer than the others.
4 Insert the drain hose into the section to which the drain hose is to
(more than 35 mm)
be attached at the rear right of the indoor unit.
•
For the indoor/outdoor unit connecting wires, be sure to use the ones in compli-
ance with the standards.
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 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.
Drain hose
Indoor and Outdoor connecting
wire Specification
6-5 TEST RUN
7. FOR MOVEMENT AND MAINTENANCE
•
Before performing the test run, recheck for any wrong wiring.
Wrong wiring prevents normal operation or results in blown fuse disabling operation.
7-1 HOW TO INSTALL THE FRONT PANEL
•
The test run can be started by pressing EMERGENCY OPERATION switch. When
1 Before installing the front panel, set the horizontal vane to the position as shown
the EMERGENCY OPERATION switch is once pressed, the unit will start the test run
below.
(continuous operation) for 30 minutes.
2 Insert the bottom of the front panel under the horizontal vane.
A thermostat does not work during this time. After 30 minutes the unit will start the
EMERGENCY OPERATION at a fixed temperature setting of 24 °C in COOL MODE. 3 Set the top of the front panel.
• 4 Push as the arrow mark on the front panel to fix it to the air conditioner.
Perform test run in the following procedure.
Note:
Insert the power supply plug into the power outlet and/or turn on the breaker.
Check that both of the operation indicator lamps are not lit.
If they are blinking, the horizontal vanes are not installed correctly.
In this case, disconnect the power supply plug and/or turn off the breaker, and then
reinstall the horizontal vanes. (See the OPERATING INSTRUCTIONS page 11.)
1 Horizontal vane
Horizontal vanes
Compound pressure Click.
gauge (for R410A)
Pressure gauge
(for R410A)
Gauge manifold
valve (for R410A)
Handle High
Charge hose
(for R410A) PROCEDURE
Vacuum (or the vacuum
•
pump Press the EMERGENCY OPERATION switch.
pump with the
function to 1 Press it once, and after test run for 30 minutes the EMERGENCY COOL MODE starts.
Adapter for prevent the
preventing If the left side lamp of the operation indicator blinks every 0.5 seconds, inspect the
back flow)
the back flow indoor/outdoor unit connecting wire A for mis-wiring.
7-2 REMOVING THE INDOOR UNIT
2 Press it once more, and the EMERGENCY HEAT MODE starts. Remove the bottom of the indoor unit from the installation plate.
3 Press it once more, and the operation stops.
(The operation mode changes in order of 1 ~ 3 every time the EMERGENCY When releasing the corner part
OPERATION switch is pressed.)
Release both left and right bottom corner part of indoor unit and pull it downward and
forward as below to release the hooks.
Mode Operation Indicator lamp
1 COOL
(Light) (Off)
2 HEAT
(Off) (Light)
EMERGENCY
3 STOP
OPERATION switch
(Off) (Off)
•
In starting the heating operation, indoor unit fan may not operate to prevent blowing
cool air. Please wait for a few minutes until the temperature of heat exchanger rises and
warm air blows out.
If the above method cannot be used
Remove the front panel and insert hexagonal wrenches into the square holes on the
kgf·cm Checking the remote (infrared) signal reception
left and right as shown in the figure below, then push them up; the bottom of the
140 to 180 Press the ON/OFF button on the remote controller and check that an electronic sound is
indoor unit is lowered and the hooks are released.
heard from the indoor unit. Press the ON/OFF button again to turn the air conditioner off.
200 to 300
If the indoor unit is operated with the remote controller, both the test
run and the emergency operation are released by commands from
the remote controller.
•
Once the compressor stops, the restart preventive device operates so the compressor
will not operate for three minutes to protect the air conditioner.
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.
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.
Power supply cord
Indoor unit packing
Loosen terminal screw. L
cardboard
3 N 2 Indoor terminal block
Earth wire
(green/yellow)
Cut the cardboard using
scissors or cutters.
MSZ Indoor/outdoor unit
Lead wire
connecting wire A
MUZ
Terminal block 4-core 1.0 mm
Roll the cutting Securely attach <Connection details>
the spacer
piece as shown in
the right. assembly in the
3 N 2 Outdoor terminal block
concave part of
the rib, taking
care its direction
Spacer CAUTION
is correct as
shown in the •
Use care not to make mis-wiring.
figure right. •
Firmly tighten the terminal screws to prevent them from loosening.
•
After tightening, pull the wires lightly to confirm that they do not move.
•
If the connecting wire is incorrectly connected to the terminal block, the unit
does not operate normally.
Accumulated
drain water
Do not raise. Service panel
Air
Remove one fixing
screw to open the
Water service panel.
Water Be sure to fix the
leakage leakage Waving
indoor/outdoor unit
connecting wire A
(Fig. 2) (Fig. 3)
using this cord clamp.
Drain
hose
WARNING
Less than Be sure to attach the service panel of the outdoor unit securely. If it is not attached
Tip of drain
Soft hose
50 mm gap correctly, it could result in a fire or an electric shock due to dust, water, etc.
hose dipped I.D.
in water.
15 mm or
hard vinyl
chloride 5-2 DRAIN PIPING FOR OUTDOOR UNIT
•
Provide drain piping before indoor and outdoor piping connection. (It will be hard to
Ditch
install drain socket 9 if indoor and outdoor piping connection is conducted prior to
(Fig. 5) drain piping as outdoor unit becomes immovable.)
•
Connect the drain hose I (obtainable at a store, inside diameter: 15 mm) as
shown in the figure for drainage.
•
Make sure to provide drain piping with a downhill grade for easy drain flow.
Drain hose I
Drain socket 9
(For YV type only)
Note:
15 mm
Do not use the drain socket 9 in the cold region. Drain may freeze and it makes the
35 mm
fan stop.
Cable 4-core 1.0 mm 2 , in conformity with
Design 245 IEC 57.
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,
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
Slightly downward
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
4 Push
3 water (under 40°C) during cold season. But never use naked fire or steam.
Union
Stop valve
Indoor unit
Liquid pipe
Gas pipe Outdoor unit
Refrigerant gas
cylinder
operating valve
Service port
2
Gauge manifold
Horizontal vane
valve (for R410A)
Charge hose (for R410A)
Refrigerant gas cylinder
for R410A with siphon
Refrigerant (liquid)
Electronic scale for
refrigerant charging
Push Lower
Square hole
This product is designed and intended for use in the residential, commercial and
light-industrial environment.
The product at hand is based on • Low Voltage Directive 73/23/ EEC
the following EU regulations: • Electromagnetic Compatibility Directive 89/336/
EEC
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU,
TOKYO 100-8310, JAPAN
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