Mitsubishi Electric MS-GA80VB Series Installation Manual

SG79Y368H01
SPLIT-TYPE AIR CONDITIONERS
Models
MS-GA80VB
MSH-GA80VB Series
When installing an MXZ series
MSH-GA60VB outdoor unit, refer to the MS and MSH
INSTALLATION MANUAL
type manual for indoor unit set up.
[FLARE CONNECTION TYPE]
CAUTION
1. THE FOLLOWING SHOULD ALWAYS BE
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
Please report to your supply authority or obtain their consent before connecting
explosion.
this equipment to the power supply system.
• Be sure to read "THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR I Install an earth leakage breaker depending on the installation place
SAFETY" before installing the air conditioner. (Where it is humid).
• Be sure to observe the cautions specified here as they include important items If an earth leakage breaker is not installed, it could cause an electric shock.
related to safety. I Perform the drainage/piping work securely according to the installation
• The indications and meanings are as follows.
manual.
If there is a defect in the drainage/piping work, water could drop from the unit
WARNING
and household goods could be wet and damaged.
Could lead to death, serious injury, etc.
I 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
CAUTION
a leakage of refrigerant.
Could lead to serious injury in particular environments when operated incorrectly.
2. SELECTING THE INSTALLATION LOCATION
•
After reading this manual, be sure to keep it together with the OPERATING
INSTRUCTIONS in a handy place on the customer's site.
2-1 INDOOR UNIT
WARNING • Where airflow is not blocked.
•
I Do not install the unit by yourself (customer). Where cool air spreads over the entire room.
•
Maximum refrigerant piping length between indoor unit and outdoor unit is 25 m
Incomplete installation could cause injury due to fire, electric shock, the unit
(for 60 type) and 30 m (for 80 type) and the difference of height of both units is
falling or leakage of water. Consult the dealer from whom you purchased the
10 m (for 60 type) and 15 m (for 80 type).
•
unit or special installer. Rigid wall without vibration.
• Where it is not exposed to direct sunshine.
I Install the unit securely in a place which can bear the weight of the unit.
•
Where easily drained.
When installed in an insufficient strong place, the unit could fall causing injury.
•
At a distance 1 m or more away from your TV and radio. Operation of the air
I Use the specified wires to connect the indoor and outdoor units securely
conditioner interferes with radio or TV reception in areas where reception is weak.
and attach the wires firmly to the terminal block connecting sections so An amplifier may be required for the affected device.
the stress of the wires is not applied to the sections. • In a place as far away as possible from fluorescent and incandescent lights (so
Incomplete connecting and fixing could cause fire. the infrared remote control can operate the air conditioner normally).
•
Where the air filter can be removed and replaced easily.
I Do not use intermediate connection of the power cord or the extension
cord and do not connect many devices to one AC outlet. 2-2 OUTDOOR UNIT
It could cause a fire or an electric shock due to defective contact, defective
•
Where it is not exposed to strong wind.
insulation, exceeding the permissible current, etc. •
Where airflow is good and dustless.
•
I Check that the refrigerant gas do not leak after installation has com- Where it is not exposed to rain and direct sunshine.
•
Where neighbours are not annoyed by operation sound or hot air.
pleted.
• Where rigid wall or support is available to prevent the increase of operation sound
If refrigerant gas leaks indoors, and comes into contact with the fire of a fan
or vibration.
heater, space heater, stove, etc., harmful substances will be generated.
•
Where there is no risk of combustible gas leakage.
I Perform the installation securely referring to the installation manual. •
When installing the unit at a high level, be sure to fix the unit legs.
•
Incomplete installation could cause a personal injury due to fire, electric Where it is at least 3 m away from the antenna of TV set or radio. Operation of the
air conditioner interferes with radio or TV reception in areas where reception is
shock, the unit falling or leakage of water.
weak. An amplifier may be required for the affected device.
I Perform electrical work according to the installation manual and be sure
•
Install the unit horizontally.
to use an exclusive circuit. •
Please install it in an area not affected by snowfall or blowing snow. In areas with
If the capacity of the power circuit is insufficient or there is incomplete
heavy snow, please install a canopy, a pedestal and/or some baffle boards.
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
Avoid the following places for installation where air conditioner trouble is liable to
to dust, water, etc.
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.
•
Place of mounting
I The appliance shall be installed in accordance with national wiring
• Where it is easy to operate and easily visible.
regulations.
• Where children can not touch.
I When installing or relocating the unit, make sure that no substance •
Mounting
other than the specified refrigerant (R410A) enters the refrigerant circuit. 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-
Any presence of foreign substance such as air can cause abnormal pressure
beep' receiving tone sounds). After that, attach remote controller holder 3 to a
rise or an explosion.
pillar or wall and set the wireless remote controller 6.
In rooms where inverter type fluorescent lamps are used, the signal from the
1
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
•
Refrigerant pipes are used to connect the indoor and outdoor units.
•
Be careful not to crush or bend the pipe in pipe bending. MSH-GA60 6.35
For liquid
MS(H)-GA80 9.52
Limits MSH-GA60 MS(H)-GA80
For gas 15.88
Pipe length 25 m max. 30 m max.
• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm (for
Height difference 10 m max. 15 m max.
ø6.35, 9.52) or 1.0 mm (for ø15.88). Never use any pipe with a thickness less than 0.8
No. of bends 10 max.
mm (for ø6.35, 9.52) or 1.0 mm (for ø15.88), as the pressure resistance is insufficient.
•
Refrigerant adjustment ... If pipe length exceeds 7 m, additional refrigerant 2 Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
(R410A) charge is required.
3 Refrigerant pipe bending radius must be 100 mm or more.
(The outdoor unit is charged with refrigerant for pipe length up to 7 m.)
CAUTION
Up to 7 m No additional charge is required.
Additional charge is required. Be sure to use the insulation of specified thickness. Excessive thickness may
Pipe length
Exceeding 7 m
(Refer to the table below.) cause incorrect installation of the indoor unit and lack of thickness may cause
dew drippage.
55 g/m × (refrigerant piping length (m) -7)
MS-GA80
Refrigerant to
MSH-GA80 55 g/m × (refrigerant piping length (m) -7)
be added
MSH-GA60 20 g/m × (refrigerant piping length (m) -7)
Decide the installation position using mark on the installation
plate indicating the indoor unit size as reference.
ACCESSORIES
Check the following parts before installation.
<Indoor unit>
1
Installation plate 1
Installation plate fixing screw 4 × 25 mm
2 7
3
Remote controller holder 1
4 Fixing screw for 3 3.5 × 16 mm (Black) 2
5 Battery (AAA) for remote controller 2
6 Wireless remote controller 1
7
Felt tape (Used for left or left-rear piping) 1
<Outdoor unit: MUH type>
8 Drain socket 1
1
9 Drain cap ø33 2
Piping can be directed towards rear,
PART TO BE PROVIDED AT YOUR SITE
right, downward, left or left-rear
2
Optional extension pipe directions.
Indoor/outdoor unit connecting wire Rear side
A 1
Right
(2-core 1.0 mm 2 -2.0 mm 2 )
D
H
B Extension pipe 1
Rear
C Wall hole sleeve 1
D
Wall hole cover 1
C
Pipe fixing band (The quantity depends
E 7
2 to 5
on the pipe length.)
Fixing screw for E 4 × 20 mm (The
Note: Do not
F
2 to 5
obstruct the
quantity depends on the pipe length.) B
air outlet.
G Piping tape 1
G
H
Putty 1
6
Drain hose (or soft PVC. hose, 15 mm
I
1
inner dia. or hard PVC pipe VP16) 3
J
Refrigeration oil 1
Separate the 2 connecting pipes and
Power supply cord (See the table in 5 E
F apply insulation individually.
INDOOR/OUTDOOR WIRE CONNECTION
K 1
4
AND OUTDOOR POWER SUPPLY CORD
CONNECTION for the cord size.)
5
840 mm 8 mm thickness thermal insulation
plastic
When the piping is to be attached to a
wall containing metals (tin plated) or
K
metal netting, use a chemically treated
wooden piece 20 mm or thicker
Air outlet
between the wall and the piping or
wrap 7 to 8 turns of insulation vinyl
100 mm 500 mm tape around the piping.
4-10 mm × 21 mm slot
A
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.
Units should be installed by licensed contractor
• To prevent exposure to wind, it is recommended to install a
according to local code requirement.
baffle board on the air outlet side of the outdoor unit.
MCT_SG79Y368H01_En 1
4-3 CONNECTING WIRE SPECIFICATIONS
4. INDOOR UNIT INSTALLATION
•
Use special room air conditioning circuit.
HFC
4-1 FIXING OF INSTALLATION PLATE
utilized
Power supply cord length
•
Find a structural material (such as a stud) in the wall and fix installation plate
R410A (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/Frequency : 230 V/50 Hz)
(Input capacity Main switch/Fuse : 10 A)
(This plug has to be the one meets the Standards.)
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.
75 mm terminal block
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.
band E MS Type and MSH Type
Fix the pipe to wall with
pipe fixing band E.
Loosen terminal
screw.
Indoor unit
Fixing screw F
Wall hole
sleeve C
Terminal
block
6-2 FLARING WORK
Be sure to fix the indoor/outdoor unit •
Main cause of gas leakage is defect in flaring work.
connecting wire A and power supply
Carry out correct flaring work in the following procedure.
cord K using this cord clamp.
1 Pipe cutting
Insulation material
mm
• Cut the copper pipe correctly with pipe cutter.
8 Be sure to put the left
Heat resisting foam
portion into the square
8 plastic 0.045
hole of the service panel.
specific gravity
8
Service panel
Fixing screws
Remove two fixing
screws to open the
2 Burrs removal
service panel.
Valve cover
• Completely remove all burrs from the cut cross section of pipe.
• Put the end of the copper pipe to downward direction as you remove burrs in order to
WARNING
avoid to let burrs drop in the piping.
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.
6. INDOOR/OUTDOOR UNIT CONNECTION
FINISHING AND TEST RUN
INSTALLATION INFORMATION FOR THE AIR CONDI-
TIONER WITH R410A REFRIGERANT
3 Putting nut on
• This room air conditioner adopts an HFC refrigerant (R410A) which will never destroy
• Remove flare nuts attached to indoor and outdoor
the ozone layer.
units, then put them on pipe having completed
Be careful the • Pay particular attention to the following points, though the basic installation
burr removal.
drain hose is not
procedure is same as that for R22 air conditioners.
raised. (not possible to put them on after flaring work)
1 As R410A has a working pressure approx. 1.6 times as high as that of R22, some
• Flare nut for R410A pipe differs from R22 pipe.
special tools and piping parts / materials are required. (Refer to the table below.)
Refer to the following table for detail.
2 Take sufficient care not to allow water and other contaminations to enter the
R410A refrigerant during storage and installation, since it is more susceptible to mm
contaminations than R22.
ø6.35
3 For refrigerant piping, use clean, pressure-proof parts / materials specifically
ø9.52
designed for R410A. (Refer to 2. Refrigerant piping.)
4 Composition change may occur in R410A since it is a mixed refrigerant. When
ø15.88
charging, charge liquid refrigerant to prevent composition change.
Front
4 Flaring work
6-1 Tools dedicated for the air conditioner with R410A
refrigerant
• Carry out flaring work using flaring tool as shown below.
The following tools are required for R410A refrigerant. Some R22 tools can be
Left
substituted for R410A tools.
Downward Left-rear
The diameter of the service port on the stop valve in outdoor unit has been changed to
Lock the catch. 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.)
R410A tools Can R22 tools be used? Description Clutch type
R410A has high pressures beyond the meas-
urement range of existing gauges.
Outside diameter
Gauge manifold No Port diameters have been changed to prevent
any other refrigerant from being charged into the
unit.
ø6.35 mm
Hose material and cap size have been changed
Charge hose No
to improve the pressure resistance. ø9.52 mm
Gas leak detector No Dedicated for HFC refrigerant. ø15.88 mm
Yes 1/4
Torque wrench
• Firmly hold copper pipe in a die in the dimension shown in the table above.
No 1/2 and 5/8
Clamp bar hole has been enlarged to reinforce
5 Check
Flare tool Yes
the spring strength in the tool.
Provided for flaring work (to be used with R22 • Compare the flared work with figure below.
Flare gauge New
flare tool). • If flare is noted to be defective, cut off the flared section and do flaring work again.
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
for refrigerant
New cylinder because the refrigerant bubbles due to
charging
high pressure and high-speed vaporization.
No: Not substitutable for R410A Yes: Substitutable for R410A
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
•
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
Green/Yellow : Ground
operated in "I FEEL..." or "AUTO" mode before power failure, the operation mode
Blue : N
(COOL, DRY or HEAT) is not stored in the memory. When the main power is turned
Brown : L
on, the unit decides the operation mode by the initial room temperature at restart and
starts operation again.
WARNING
Operation
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.
ELECTRICAL COVER •
VA clamp Wrap the felt tape 7 around the pipe and the drain hose, then put the pipe in the
back space of the indoor unit.
Fixing screws
Liquid pipe
Gas pipe
Drain hose
Indoor/outdoor unit
Never fail to hook the left claw on Felt tape 7
connecting wire A
the wire fixture to secure indoor/
outdoor unit connecting wire A.
Securely push the wire into
the terminal block until no
part of its core is appeared.
WARNING
3 N
Indoor terminal block
Indoor/outdoor unit
connecting wire A
15 mm
2-core 1.0 mm 2
35 mm
Lead wire
3 N Outdoor terminal block
<Connection details>
6-3 PIPE CONNECTION
Note:
Fasten a flare nut with a torque wrench as specified in the table below.
When fastened too tight, a flare nut may broken after a long period and cause a leakage
of refrigerant.
1 Indoor unit connection
Connect both liquid and gas pipings to indoor unit.
• 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
Copper pipe Tilted Uneven Burred section, and tighten using two wrenches. Excessive tightening damages the flare
90°
section.
Pipe diameter Tightening torque
mm N·m kgf·cm
6.35 13.7 to 17.7 140 to 180
9.52 34.3 to 41.2 350 to 420
15.88 73.5 to 78.4 750 to 800
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
applied for indoor unit.
Copper pipe
Burr
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.
Flare nut 6-4 PURGING PROCEDURES·LEAK TEST
PURGING PROCEDURES
Copper pipe
Connect the refrigerant pipes (both liquid pipe and the gas pipe) between the indoor
and the outdoor unit.
inch R410A R22
1/4 17 17 Remove the service port cap of the stop valve on the side of the outdoor unit gas
pipe. (The stop valve will not work in it initial state fresh out of the factory (totally
3/8 22 22
closed with cap on).)
5/8 29 27
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
York
valve, and stop the vacuum pump.
Die
Die
Leave as it is for one or two minutes. Make sure the pointer gauge manifold valve
remains in the same position. Confirm that the pressure gauge shows–0.101 Mpa
Copper pipe
Copper pipe
Wing nut type Flare nut [Gauge] (–760 mmHg).
A (mm)
Compound pressure
-0.101MPa
Flare tool for R410A Conventional flare tool Stop valve gauge (for R410A)
(-760 mmHg)
clutch type Clutch type Wing nut type
*Close
0 to 0.5 1.0 to 1.5 1.5 to 2.0
*Open Stop valve
0 to 0.5 1.0 to 1.5 1.5 to 2.0
Handle
0 to 0.5 1.0 to 1.5 2.0 to 2.5 Low
Hexagonal wrench Stop
valve
Service port
Window
Adapter for
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.
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.
Pipe length up to 7 m Pipe length exceeding 7 m
Even length
No gas charge is needed. Charge the prescribed amount
all around
of gas. (refer to 3)
Tighten the cap to the service port to obtain the initial status.
Retighten the cap.
Leak test
18/8/04, 2:26 PM
FOR REAR, RIGHT OR DOWNWARD PIPING 3 Put the drain cap into the section to which the drain hose is to be
• attached at the rear of the indoor unit.
Pipe arrangement
Put the refrigerant piping and the drain hose together, then apply piping tape G to
Insert the screwdriver, etc. (not sharp-edged tool) into the hole at the end of the cap and
them.
insert the cap fully into the drain pan.
Be careful drain hose is not
Firmly apply piping tape G
heaved.
from the end.
Cut off in case of right piping. Cut off in case of downward 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.
• Insert the piping and the drain hose into the wall hole sleeve C, and hook the upper
part of the indoor unit on the installation plate 1. Insert the drain hose fully into the drain pan. Check if the hose is hooked securely to
•
Check if the indoor unit is hooked securely on the installation plate 1 by moving the the projection of its inserting part at the drain pan.
unit to left and right.
•
Thrust the lower part of the indoor unit into the installation plate 1.
FOR LEFT OR LEFT-REAR PIPING
•
Pipe arrangement
Put the refrigerant piping and the drain hose together, then apply felt tape 7 to them.
INDOOR UNIT INSTALLATION
• Insert the drain hose into the wall hole sleeve C, and hook the upper part of
Be careful drain
indoor unit on the installation plate 1. Then, move the unit to the very edge of the
hose is not heaved. Cut off in case of left piping.
left side for putting the piping easily in the back space of the indoor unit. After that,
cut the part of packing material (spacer assembly) to hook it on the back rib and
lift the indoor unit as shown in the figure below.
Cut part of packing material (spacer assembly) to
hook it on the back rib.
Spacer assembly
Use a bandage stopper at
Felt tape 7
the end of felt tape 7.
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)
Tip of drain
hose dipped
2 Pull out the drain hose at the rear left of the indoor unit. in water.
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
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
commercially sold insulation.
Drain hose
Tightening torque 7. FOR MOVEMENT AND MAINTENANCE
N·m kgf·cm
7-1 REMOVING AND REINSTALLING THE FRONT PANEL
Cap for service port 13.7 to 17.7 140 to 180
Cap for stop valve 19.6 to 29.4 200 to 300
FRONT PANEL REMOVAL
6-5 TEST RUN
4 Release the hooks.
MS type
• Before performing the test run, recheck for any wrong wiring.
Wrong wiring prevents normal operation or results in blown fuse disabling operation.
• 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
(continuous operation) for 30 minutes.
1 Remove the screw caps.
A thermostat does not work during this time. After 30 minutes the unit will start the 2 Remove three screws.
EMERGENCY OPERATION at a fixed temperature setting of 24°C in COOL MODE.
•
Perform test run in the following procedure.
FRONT PANEL REINSTALLATION
Note:
PROCEDURE
Do not open the front panel up beyond the level position.
•
Press the EMERGENCY OPERATION switch.
The panel may come off in order to prevent it from being damaged.
1 Press it once, and after test run for 30 minutes the EMERGENCY COOL MODE starts. 1 Set the horizontal vane to the position as below before reinstalling the front
2 Press it once more, and the operation stops.
panel.
(The operation mode alternates between 1 and 2 every time the EMERGENCY
OPERATION switch is pressed.)
1 Point the
Mode Operation Indicator lamp
horizontal
vane slightly
EMERGENCY
1 COOL downward.
OPERATION switch
(Light) (Off)
2 STOP
(Off) (Off)
MSH type
2 Attach the bottom of the front panel under the horizontal vane.
• 3 Fit in the top of the front panel.
Before performing the test run, recheck any wrong wiring.
4 Fit in the bottom of the front panel and tighten it using screws.
Wrong wiring prevents normal operation or results in blown fuse disabling operation.
• 5 Push the section of the front panel marked by the arrow and fit the panel into the
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- air conditioner.
tinuous operation) for 30 minutes.
7-2 REMOVING THE INDOOR UNIT
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 or
Remove the bottom of the indoor unit from the installation plate.
HEAT MODE.
1 Remove the front panel. (See FRONT PANEL REMOVAL shown above.)
• Perform test run in the following procedure.
2 Insert flat screwdrivers into the square holes at the left and right bottom of the
PROCEDURE
indoor unit and push them up; the bottom of the indoor unit goes down and the
• hooks are released.
Press the EMERGENCY OPERATION switch.
1 Press it once, and after test run for 30 minutes the EMERGENCY COOL MODE starts.
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.
2 Press it once more, and the EMERGENCY HEAT MODE starts.
3 Press it once more, and the operation stops.
(The operation mode changes in order of 1 ~ 3 every time the EMERGENCY
Square hole
OPERATION switch is pressed.)
Mode Operation Indicator lamp
1 COOL
Pressure gauge (Light) (Off)
(for R410A)
EMERGENCY
OPERATION switch
Gauge manifold
2 HEAT
valve (for R410A)
(Off) (Light)
Handle High
Charge hose
3 STOP
(for R410A)
(Off) (Off)
(or the vacuum
Vacuum
pump
pump with the
•
function to In starting the heating operation, indoor unit fan may not operate to prevent blowing
prevent the cool air. Please wait for a few minutes until the temperature of heat exchanger rises
back flow)
and warm air blows out.
MS type and MSH type
Checking the remote (infrared) signal reception
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.
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.
5. OUTDOOR UNIT INSTALLATION
INDOOR/OUTDOOR UNIT CONNECTING WIRE CON-
NECTION AND OUTDOOR POWER SUPPLY CORD
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.
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
Drain cap
230 V 25 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
Drain hose
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.
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.
MS Type and MSH Type
Securely attach the spacer
assembly in the concave part
Loosen terminal screw.
of the rib, taking care its 3 N Indoor terminal block
direction is correct as shown in
the right.
Spacer Indoor/outdoor unit
connecting wire A
2-core 1.0 mm 2
Lead wire
Terminal block L~ N~ 3 N
Outdoor terminal block
<Connection details>
Power supply cord K
CAUTION
•
Use care not to make mis-wiring.
Accumulated •
Firmly tighten the terminal screws to prevent them from loosening.
drain water •
Do not raise. After tightening, pull the wires lightly to confirm that they do not move.
Air •
If the connecting wire is incorrectly connected to the terminal block, the unit
does not operate normally.
Water Water
leakage leakage Waving
(Fig. 2) (Fig. 3)
Drain
hose
Less than
Soft hose
50 mm gap
I.D.
15 mm or
hard vinyl
chloride
Ditch
(Fig. 5)
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
3 Pull the bottom.
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
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