Mitsubishi Electric MS-A30 WV Series Installation Manual

SG79Y324H01
SPLIT-TYPE AIR CONDITIONERS
Models
MS-A30 WV
R410A
MSH-A30 WV Series
When installing an MXZ series
MSH-A24WV
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.
• I Install an earth leakage breaker depending on the installation place
Be sure to read "THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR
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 24 type) and 30 m (for 30 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 24 type) and 15 m (for 30 type).
unit or special installer.
•
Rigid wall without vibration.
I Install the unit securely in a place which can bear the weight of the unit.
• Where it is not exposed to direct sunshine.
•
When installed in an insufficient strong place, the unit could fall causing injury. Where easily drained.
•
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).
I Do not use intermediate connection of the power cord or the extension •
Where the air filter can be removed and replaced easily.
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
•
insulation, exceeding the permissible current, etc. Where it is not exposed to strong wind.
• 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.
pleted.
•
Where neighbours are not annoyed by operation sound or hot air.
If refrigerant gas leaks indoors, and comes into contact with the fire of a fan
•
Where rigid wall or support is available to prevent the increase of operation sound
heater, space heater, stove, etc., harmful substances will be generated.
or vibration.
I Perform the installation securely referring to the installation manual.
• Where there is no risk of combustible gas leakage.
Incomplete installation could cause a personal injury due to fire, electric •
When installing the unit at a high level, be sure to fix the unit legs.
•
shock, the unit falling or leakage of water. 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 interferes with radio or TV reception in areas where reception is
weak. An amplifier may be required for the affected device.
to use an exclusive circuit.
•
Install the unit horizontally.
If the capacity of the power circuit is insufficient or there is incomplete
Note:
electrical work, it could result in a fire or an electric shock.
It is advisable to make a piping loop near outdoor unit so as to reduce vibration
I Attach the electrical cover to the indoor unit and the service panel to the
transmitted from there.
outdoor unit securely.
CAUTION
If the electrical cover in the indoor unit and/or the service panel in the outdoor
unit are not attached securely, it could result in a fire or an electric shock due Avoid the following places for installation where air conditioner trouble is liable to
occur.
to dust, water, etc.
•
Where flammable gas could leak.
I Be sure to use the part provided or specified parts for the installation
•
Where there is much machine oil.
work.
• Salty places such as the seaside.
The use of defective parts could cause an injury or leakage of water due to a •
Where sulfide gas is generated such as a hot spring.
fire, an electric shock, the unit falling, etc. •
Where there is high-frequency or wireless equipment.
I Be sure to cut off the main power in case of setting up the indoor
2-3 WIRELESS REMOTE CONTROLLER MOUNTING
electronic control P.C. board or wiring works.
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.
• Where children can not touch.
regulations.
•
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
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.
• Outside diameter Insulation thickness
This unit has flared connections on both indoor and outdoor sides.
• Pipe
Remove the outdoor units valve cover, then connect the pipe.
mm
•
Refrigerant pipes are used to connect the indoor and outdoor units.
MSH-A24 6.35
• Be careful not to crush or bend the pipe in pipe bending.
For liquid
MS(H)-A30 9.52
Limits MSH-A24 MS(H)-A30
For gas 15.88
Pipe length 25 m max. 15 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. 30 m max. ø6.35, 9.52) or 1.0 mm (for ø15.88). Never use any pipe with a thickness less than 0.8
mm (for ø6.35, 9.52) or 1.0 mm (for ø15.88), as the pressure resistance is insufficient.
No. of bends 10 max.
2 Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
• 3 Refrigerant pipe bending radius must be 100 mm or more.
Refrigerant adjustment ... If pipe length exceeds 7 m, additional refrigerant (R-
410A) charge is required.
CAUTION
(The outdoor unit is charged with refrigerant for pipe length up to 7 m.)
Be sure to use the insulation of specified thickness. Excessive thickness may
Up to 7 m No additional charge is required.
cause incorrect installation of the indoor unit and lack of thickness may cause
Pipe length Additional charge is required. dew drippage.
Exceeding 7 m
(Refer to the table below.)
Decide the installation position using mark on the installation
55 g/m × (refrigerant piping length (m) -7)
MS-A30
plate indicating the indoor unit size as reference.
Refrigerant to
55 g/m × (refrigerant piping length (m) -7)
MSH-A30
be added
MSH-A24 20 g/m × (refrigerant piping length (m) -7)
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
Fixing screw for 3 3.5 × 16 mm (Black)
4 2
5 Battery (AAA) for remote controller 2
1
6 Wireless remote controller 1
7 Felt tape (Used for left or left-rear piping) 1
Piping can be directed towards rear,
2
<Outdoor unit: MUH type> right, downward, left or left-rear
directions.
8 Drain socket 1
9 Drain cap ø33 6 Rear side
D Right
H
PART TO BE PROVIDED AT YOUR SITE
Rear
Optional extension pipe
Indoor/outdoor unit connecting wire
A 1 C
(2-core 1.0 mm 2 -2.0 mm 2 ) 7
B
Extension pipe 1
Note: Do not
obstruct the
C B
Wall hole sleeve 1
air outlet.
D Wall hole cover 1
G
Pipe fixing band (The quantity depends
E
2 to 5 6
on the pipe length.)
Fixing screw for E 4 × 20 mm (The
3
F 2 to 5
quantity depends on the pipe length.)
G Piping tape 1
E
F Separate the 2 connecting pipes and
H Putty 1 apply insulation individually.
4
Drain hose (or soft PVC. hose, 15 mm
I 1
inner dia. or hard PVC pipe VP16)
J Refrigeration oil 1
5
Power supply cord (See the table in 5
INDOOR/OUTDOOR WIRE CONNECTION 8 mm thickness thermal insulation
K 1
plastic
AND OUTDOOR POWER SUPPLY CORD
CONNECTION for the cord size.)
When the piping is to be attached to a
K
wall containing metals (tin plated) or
metal netting, use a chemically treated
840 mm
wooden piece 20 mm or thicker
between the wall and the piping or
wrap 7 to 8 turns of insulation vinyl
tape around the piping.
A
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.
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
(Lead to left/Lead to right)
horizontally.
26 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)
(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.
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.
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
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.
mm
• Refer to the following table for detail.
This room air conditioner adopts an HFC refrigerant (R410A) which will never destroy
8
Heat resisting foam the ozone layer.
plastic 0.045 •
8 Pay particular attention to the following points, though the basic installation procedure
ø6.35
specific gravity is same as that for R22 air conditioners.
8
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.) ø15.88
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
4 Flaring work
contaminations than R22.
3 For refrigerant piping, use clean, pressure-proof parts / materials specifically
• Carry out flaring work using flaring tool as shown below.
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.
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 Outside diameter
from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.)
ø6.35 mm
R410A tools Can R22 tools be used? Description
ø9.52 mm
R410A has high pressures beyond the meas-
urement range of existing gauges.
ø15.88 mm
Gauge manifold No Port diameters have been changed to prevent
Be careful the
any other refrigerant from being charged into the
• Firmly hold copper pipe in a die in the dimension shown in the table above.
drain hose is not
unit.
raised.
Hose material and cap size have been changed
5 Check
Charge hose No
to improve the pressure resistance.
Gas leak detector No Dedicated for HFC refrigerant. • Compare the flared work with figure below.
• If flare is noted to be defective, cut off the flared section and do flaring work again.
Yes 1/4 and 3/8
Torque wrench
No 5/8
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
Front
flare tool).
Provided to prevent the back flow of oil. This
Vacuum pump
New adapter enables you to use existing vacuum
adaptor
pumps.
Left
Electronic scale
It is difficult to measure R410A with a charging
Downward Left-rear
for refrigerant New cylinder because the refrigerant bubbles due to
charging high pressure and high-speed vaporization.
6-3 PIPE CONNECTION
Lock the catch.
No: Not substitutable for R410A Yes: Substitutable for R410A
Note:
Fasten a flare nut with a torque wrench as specified in the table below.
6-2 FLARING WORK
When fastened too tight, a flare nut may broken after a long period and cause a leakage
• of refrigerant.
Main cause of gas leakage is defect in flaring work.
1 Indoor unit connection
Carry out correct flaring work in the following procedure.
Connect both liquid and gas pipings to indoor unit.
•
Apply a thin coat of refrigeration oil J on the seat surface of pipe.
1 Pipe cutting
•
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
• Cut the copper pipe correctly with pipe cutter.
section, and tighten using two wrenches. Excessive tightening damages the flare
section.
No good
Pipe diameter
Good
Copper pipe Tilted Uneven Burred mm
90°
6.35
9.52
15.88
2 Outdoor unit connection
Connect pipes to stop valve pipe joint of the outdoor unit in the same manner applied for
2 Burrs removal
indoor unit.
•
For tightening, use a torque wrench or spanner and use the same tightening torque
• Completely remove all burrs from the cut cross section of pipe.
applied for indoor unit.
• Put the end of the copper pipe to downward direction as you remove burrs in order to
INSULATION AND TAPING
avoid to let burrs drop in the piping.
1 Cover piping joints with pipe cover.
Copper pipe
Burr
2 For outdoor unit side, surely insulate every piping including valves.
Spare 3 Using piping tape G, apply taping starting from the entry of outdoor unit.
reamer •
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
Pipe
cutter 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 : Ground 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
ELECTRICAL COVER
VA clamp back space of the indoor unit.
Fixing screws Liquid pipe
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
•
Pipe arrangement
the terminal block until no
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.
Cut off in case of right piping. Cut off in case of downward piping.
3 N
Indoor terminal block
• 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.
•
Indoor/outdoor unit Check if the indoor unit is hooked securely on the installation plate 1 by moving the
connecting wire A unit to left and right.
15 mm
2-core 1.0 mm 2 •
35 mm Thrust the lower part of the indoor unit into the installation plate 1.
Lead wire
3 N Outdoor terminal block
<Connection details>
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
5/8 29 27
stop valve on the gas pipe side of the outdoor unit.
Run the vacuum pump. (Vacuumize for more than 15 minutes.)
Check the vacuum with the gauge manifold valve, then close the gauge manifold
Flaring tool A
valve, and stop the vacuum pump.
York
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
Die
[Gauge] (–760 mmHg).
Copper pipe
Clutch type Copper pipe
Wing nut type Flare nut
-0.101MPa
Stop valve (-760 mmHg)
A (mm)
Flare tool for R410A Conventional flare tool
*Close
clutch type Clutch type Wing nut type Stop valve
*Open
0 to 0.5 1.0 to 1.5 1.5 to 2.0
Handle
0 to 0.5 1.0 to 1.5 1.5 to 2.0 Low
Hexagonal wrench Stop
0 to 0.5 1.0 to 1.5 2.0 to 2.5 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.
After refrigerant pipes are connected and evacuated, fully open all stop valves on
both sides of gas pipe and liquid pipe.
Smooth all around Inside is shining without any scratches.
Operating without fully opening lowers the performance and this causes trouble.
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)
Even length
all around
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
73.5 to 78.4 750 to 800
4 Insert the drain hose into the section to which the drain hose is
FOR LEFT OR LEFT-REAR PIPING
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.)
Spacer assembly
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.
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
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.
Drain hose Water
leakage
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
MS type
• 7-1 REMOVING AND REINSTALLING THE FRONT PANEL
Before performing the test run, recheck for any wrong wiring.
Wrong wiring prevents normal operation or results in blown fuse disabling operation.
• FRONT PANEL REMOVAL
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
4 Release the hooks.
(continuous operation) for 30 minutes.
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.
•
Perform test run in the following procedure.
PROCEDURE
• Press the EMERGENCY OPERATION switch.
1 Remove the screw caps.
1 Press it once, and after test run for 30 minutes the EMERGENCY COOL MODE starts. 2 Remove three screws.
2 Press it once more, and the operation stops.
(The operation mode alternates between 1 and 2 every time the EMERGENCY
FRONT PANEL REINSTALLATION
OPERATION switch is pressed.)
Note:
Do not open the front panel up beyond the level position.
Mode Operation Indicator lamp The panel may come off in order to prevent it from being damaged.
1 Set the horizontal vane to the position as below before reinstalling the front
EMERGENCY
1 COOL panel.
OPERATION switch
(Light) (Off)
Compound pressure
gauge (for R410A) 2 STOP
1 Point the
Pressure gauge (Off) (Off)
horizontal
(for R410A)
vane slightly
Gauge manifold downward.
MSH type
valve (for R410A)
Handle High •
Before performing the test run, recheck any wrong wiring.
Charge hose Wrong wiring prevents normal operation or results in blown fuse disabling operation.
(for R410A) •
The test run can be started by pressing EMERGENCY OPERATION switch. When the
Vacuum (or the vacuum
pump EMERGENCY OPERATION switch is once pressed, the unit will start the test run (con-
pump with the
function to tinuous operation) for 30 minutes. 2 Attach the bottom of the front panel under the horizontal vane.
Adapter for prevent the
A thermostat does not work during this time. After 30 minutes the unit will start the 3 Fit in the top of the front panel.
preventing back flow)
EMERGENCY OPERATION at a fixed temperature setting of 24°C in COOL MODE or 4 Fit in the bottom of the front panel and tighten it using screws.
the back flow
HEAT MODE. 5 Push the section of the front panel marked by the arrow and fit the panel into the
• Perform test run in the following procedure.
air conditioner.
PROCEDURE
7-2 REMOVING THE INDOOR UNIT
•
Press the EMERGENCY OPERATION switch.
Remove the bottom of the indoor unit from the installation plate.
1 Press it once, and after test run for 30 minutes the EMERGENCY COOL MODE starts.
1 Remove the front panel. (See FRONT PANEL REMOVAL shown above.)
If the left side lamp of the operation indicator blinks every 0.5 seconds, inspect the
2 Insert flat screwdrivers into the square holes at the left and right bottom of the
indoor/outdoor unit connecting wire A for mis-wiring.
indoor unit and push them up; the bottom of the indoor unit goes down and the
2 Press it once more, and the EMERGENCY HEAT MODE starts. hooks are released.
3 Press it once more, and the operation stops.
(The operation mode changes in order of 1 ~ 3 every time the EMERGENCY
OPERATION switch is pressed.)
Mode Operation Indicator lamp
1 COOL
(Light) (Off)
EMERGENCY
OPERATION switch
2 HEAT
(Off) (Light)
kgf·cm
3 STOP
140 to 180
(Off) (Off)
200 to 300
•
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.
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
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 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.
•
Be careful not to contact connecting wire with piping.
•
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.
2
3-core 2.5 mm or more, in conformity
with Design 245 IEC 57.
Power supply cord
3-core 4.0 mm 2 or more, in conformity
Specification with Design 245 IEC 57.
Securely attach the spacer 3-core 6.0 mm 2 or more, in conformity
assembly in the concave part with Design 245 IEC 57.
of the rib, taking care its
Indoor and
direction is correct as shown in Cable 2-core 1.0 mm 2 , in conformity with
Outdoor connecting
the right.
Design 245 IEC 57.
Spacer
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
3 N
Indoor terminal block
Loosen terminal screw.
Accumulated
Downward Do not raise. drain water Indoor/outdoor unit
connecting wire A
slope
Air
2-core 1.0 mm
Lead wire 3 N
Water Water Outdoor terminal block
L~ N~
leakage leakage Waving Terminal block
<Connection details>
(Fig. 2) (Fig. 3)
Power supply cord K
Drain
hose
CAUTION
•
Use care not to make mis-wiring.
•
Firmly tighten the terminal screws to prevent them from loosening.
Less than
Tip of drain Soft hose
•
hose dipped 50 mm gap After tightening, pull the wires lightly to confirm that they do not move.
I.D.
•
in water. If the connecting wire is incorrectly connected to the terminal block, the unit
15 mm or
hard vinyl does not operate normally.
chloride
Ditch
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
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
Service port
Horizontal vane
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
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
15 mm
35 mm
10 m or less
15 m or less
25 m or less
2