JG79A087H01
English
SPLIT-TYPE AIR CONDITIONERS
Models
MS-GD80VB
MSH-GD80VB Series
HFC
utilized
R410A
INSTALLATION MANUAL
[FLARE CONNECTION TYPE]
1. THE FOLLOWING SHOULD ALWAYS BE
OBSERVED FOR SAFETY
Please provide an exclusive circuit for the air conditioner and make sure that no
•
other electrical appliances are connected to it.
Be sure to read “THE FOLLOWING SHOULD ALWAYS BE OBSERVED FOR
•
SAFETY” before installing the air conditioner.
Be sure to observe the cautions specifi ed here as they include important items
•
related to safety.
The indications and meanings are as follows.
•
WARNING
Could lead to death, serious injury, etc.
CAUTION
Could lead to serious injury in particular environments when operated incorrectly.
After reading this manual, be sure to keep it together with the OPERATING
•
INSTRUCTIONS in a handy place on the customer’s site.
Q Do not install the unit by yourself (customer).
Incomplete installation could cause injury due to fi re, electric shock, the unit
falling or leakage of water. Consult the dealer from whom you purchased the
unit or special installer.
Q Install the unit securely in a place which can bear the weight of the unit.
When installed in an insuffi cient strong place, the unit could fall causing injury.
Q Use the specifi ed wires to connect the indoor and outdoor units securely
and attach the wires fi rmly to the terminal block connecting sections so
the stress of the wires is not applied to the sections.
Incomplete connecting and fi xing could cause fi re.
Q Do not use intermediate connection of the power cord or the extension
cord and do not connect many devices to one AC outlet.
It could cause a fi re or an electric shock due to defective contact, defective
insulation, exceeding the permissible current, etc.
Q Check that the refrigerant gas do not leak after installation has
completed.
If refrigerant gas leaks indoors, and comes into contact with the fi re of a fan
heater, space heater, stove, etc., harmful substances will be generated.
Q Perform the installation securely referring to the installation manual.
Incomplete installation could cause a personal injury due to fi re, electric
shock, the unit falling or leakage of water.
Q Perform electrical work according to the installation manual and be sure
to use an exclusive circuit.
If the capacity of the power circuit is insuffi cient or there is incomplete
electrical work, it could result in a fi re or an electric shock.
Q Attach the electrical cover to the indoor unit and the service panel to the
outdoor unit securely.
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 fi re or an electric shock due
to dust, water, etc.
Q Be sure to use the part provided or specifi ed parts for the installation
work.
The use of defective parts could cause an injury or leakage of water due to a
fi re, an electric shock, the unit falling, etc.
Q Be sure to cut off the main power in case of setting up the indoor
electronic control P.C. board or wiring works.
It could cause an electric shock.
Q The appliance shall be installed in accordance with national wiring
regulations.
Q When installing or relocating the unit, make sure that no substance
other than the specifi ed refrigerant (R410A) enters the refrigerant circuit.
Any presence of foreign substance such as air can cause abnormal pressure
rise or an explosion.
Q Earth the unit.
Do not connect the earth to a gas pipe, water pipe, lightning rod or telephone
earth. Defective earthing could cause an electric shock.
WARNING
CAUTION
Q Do not install the unit in a place where an infl ammable gas leaks.
If gas leak and accumulate in the area surrounding the unit, it could cause an
explosion.
Q Install an earth leakage breaker depending on the installation place
(Where it is humid).
If an earth leakage breaker is not installed, it could cause an electric shock.
Q Perform the drainage/piping work securely according to the installation
manual.
If there is a defect in the drainage/piping work, water could drop from the unit
and household goods could be wet and damaged.
Q Fasten a fl are nut with a torque wrench as specifi ed in this manual.
When fastened too tight, a fl are nut may broken after a long period and cause
a leakage of refrigerant.
2. SELECTING THE INSTALLATION LOCATION
2-1 INDOOR UNIT
Where airfl ow is not blocked.
•
Where cool air spreads over the entire room.
•
Maximum refrigerant piping length between indoor unit and outdoor unit is 30 m
•
and the difference of height of both units is 15 m.
Rigid wall without vibration.
•
Where it is not exposed to direct sunshine.
•
Where easily drained.
•
At a distance 1 m or more away from your TV and radio. Operation of the air
•
conditioner interferes with radio or TV reception in areas where reception is weak.
An amplifi er may be required for the affected device.
In a place as far away as possible from fl uorescent and incandescent lights (so
•
the infrared remote control can operate the air conditioner normally).
Where the air fi lter can be removed and replaced easily.
•
2-2 OUTDOOR UNIT
Where it is not exposed to strong wind.
•
Where airfl ow is good and dustless.
•
Where it is not exposed to rain and direct sunshine.
•
Where neighbours are not annoyed by operation sound or hot air.
•
Where rigid wall or support is available to prevent the increase of operation sound
•
or vibration.
Where there is no risk of combustible gas leakage.
•
When installing the unit at a high level, be sure to fi x the unit legs.
•
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
weak. An amplifi er may be required for the affected device.
Install the unit horizontally.
•
Please install it in an area not affected by snowfall or blowing snow. In areas with
•
heavy snow, please install a canopy, a pedestal and/or some baffl e boards.
Note:
It is advisable to make a piping loop near outdoor unit so as to reduce vibration
transmitted from there.
CAUTION
Avoid the following places for installation where air conditioner trouble is liable to occur.
Where fl ammable gas could leak.
•
Where there is much machine oil.
•
Salty places such as the seaside.
•
Where sulfi de gas is generated such as a hot spring.
•
Where there is high-frequency or wireless equipment.
•
2-3 WIRELESS REMOTE CONTROLLER MOUNTING
Place of mounting
•
• Where it is easy to operate and easily visible.
• Where children can not touch.
Mounting
•
Select a position about 1.2 m above the fl oor, check that signals from the remote
controller are surely received by the indoor unit from that position (‘beep’ or ‘beepbeep’ 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 fl uorescent lamps are used, the signal from the
wireless remote controller may not be received.
1
1
3. INSTALLATION DIAGRAM & ACCESSORIES
FLARED CONNECTIONS
This unit has fl ared connections on both indoor and outdoor sides.
•
Remove the outdoor units valve cover, then connect the pipe.
•
Refrigerant pipes are used to connect the indoor and outdoor units.
•
Be careful not to crush or bend the pipe in pipe bending.
•
Limits MS(H)-GD80
Pipe length 30 m max.
Height difference 15 m max.
No. of bends 10 max.
Refrigerant adjustment ... If pipe length exceeds 7 m, additional refrigerant
•
(R-410A) charge is required.
(The outdoor unit is charged with refrigerant for pipe length up to 7 m.)
Pipe length
Refrigerant to
be added
ACCESSORIES
Check the following parts before installation.
<Indoor unit>
Installation plate 1
1
Installation plate fi xing screw 4 × 25 mm 7
2
Remote controller holder 1
3
4 Fixing screw for 3 3.5 × 16 mm (Black)
Battery (AAA) for remote controller 2
5
Wireless remote controller 1
6
Felt tape (Used for left or left-rear piping) 1
7
<Outdoor unit: MUH type>
Drain socket 1
8
Drain cap ø33 2
9
PART TO BE PROVIDED AT YOUR SITE
Optional extension pipe
Indoor/outdoor unit connecting wire
A
(2-core 1.0 mm
Extension pipe 1
B
Wall hole sleeve 1
C
Wall hole cover 1
D
Pipe fi xing band (The quantity depends
E
on the pipe length.)
Fixing screw for E 4 × 20 mm (The quan-
F
tity depends on the pipe length.)
Piping tape 1
G
Putty 1
H
Drain hose (or soft PVC. hose, 15 mm
I
inner dia. or hard PVC pipe VP16)
Refrigeration oil 1
J
Power supply cord (See the table in 5
INDOOR/OUTDOOR WIRE CONNECTION
K
AND OUTDOOR POWER SUPPLY CORD
CONNECTION for the cord size.)
330 mm
Note:
When operating the air conditioner in low outside temperature,
be sure to follow the instructions described below.
Never install the outdoor unit in a place where its air inlet/outlet
•
side may be exposed directly to wind.
To prevent exposure to wind, install the outdoor unit with its
•
air inlet side facing the wall.
To prevent exposure to wind, it is recommended to install a
•
baffl e board on the air outlet side of the outdoor unit.
Up to 7 m No additional charge is required.
Exceeding 7 m
Additional charge is required.
(Refer to the table below.)
MS-GD80 55 g/m × (refrigerant piping length (m) -7)
MSH-GD80 55 g/m × (refrigerant piping length (m) -7)
2
2
-2.0 mm2)
1
2 to 5
2 to 5
1
1
840 mm
360 mm
10.5 mm
Air outlet
169 mm
500 mm
4-10 mm × 21 mm slot
15 mm 17 mm
72 mm or more
100 mm or more for left and left
5
100 mm or m
PIPING PREPARATION
1 Specifi cations
Use the refrigerant pipes that meet the following specifi cations.
Pipe
For liquid 9.52 8 Heat resisting
For gas 15.88 8
• Use a copper pipe or a copper-alloy seamless pipe with a thickness of 0.8 mm
(for 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 insuffi cient.
2 Ensure that the 2 refrigerant pipes are insulated to prevent condensation.
3 Refrigerant pipe bending radius must be 100 mm or more.
Be sure to use the insulation of specifi ed thickness. Excessive thickness may
cause incorrect installation of the indoor unit and lack of thickness may cause
dew drippage.
1
2
0 mm
or mo
re
back piping (using spacer)
2
6
4
500 mm or more
ore
e
500 mm or mor
1
Note: Do not
7 mm or more
3
A
Outside diameter
mm mm
Insulation thickness
Insulation material
foam plastic 0.045
specifi c gravity
CAUTION
Decide the installation position using mark on the installation
plate indicating the indoor unit size as reference.
Be careful the
drain hose is not
raised.
2
00 mm
H
C
7
obstruct the
air outlet.
G
F
K
100 mm or more
350 mm or mor
e
or mo
D
re
B
E
Piping can be directed towards rear,
right, downward, left or left-rear
directions.
Rear side
Right
Rear
Downward
Separate the 2 connecting pipes and
apply insulation individually.
8 mm thickness thermal insulation
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 between the wall and the piping or wrap
7 to 8 turns of insulation vinyl tape
around the piping.
Left-rear
Lock the catch.
Units should be installed by licensed contractor according
to local code requirement.
Front
Left
4. INDOOR UNIT INSTALLATION
4-1 FIXING OF INSTALLATION PLATE
Find a structural material (such as a stud) in the wall and fi x installation plate
•
horizontally.
Bind the line to the center hole.
120 mm or more
(off the wall)
Installation
plate fi xing
screw 2
4 × 25 mm
To prevent the installation plate from vibrating, be sure to fi x the holes
as indicated by the arrows
{
.
Installation
plate 1
Plumb
72 mm or more
100 mm or more for left
and left back piping (using
spacer)
200 mm or more
(off the wall)
Align the plumb line
with the mark .
4-3 CONNECTING WIRE SPECIFICATIONS
Use special room air conditioning circuit.
•
Power supply cord length
(Lead to left/Lead to right)
Indoor/outdoor unit connecting wire
Specifi cation
Take out power supply cord from the left or right bottom corner of the indoor unit.
•
Cable 2-core 1.0 mm
with Design 60245 IEC 57.
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 Green/Yellow : Ground
Blue : N
Brown : L
WARNING
Never cut the indoor and outdoor unit connecting wire and connect it to other wires.
It may cause a fi re.
1 m/2 m
2
, in conformity
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).
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
Installation plate 1
Insert the scale.
Align the scale with the line.
Repeat the same procedure for the left hole.
Wall hole
75 mm dia.
(Indoor side)
(Wall hole cross section)
100 mm
Hole of dia.
75 mm
Wall thickness
One scale
Wall hole sleeve C
Cut with 1 extra
scale length.
Do not bundle the spare wire, but put it as shown below.
4-4 INDOOR AND OUTDOOR CONNECTING WIRE CON-
NECTION
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
process the end of the wire, then connect it to the terminal block.
5 Replace the fi xture and electrical cover securely.
Indoor
terminal block
Indoor/outdoor unit connecting wire A
VA clamp
Never fail to hook the left claw on
the wire fi xture to secure indoor/
outdoor unit connecting wire A.
Securely push the wire into
the terminal block until no
part of its core is appeared.
ELECTRICAL COVER
Fixing screws
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.
Wall hole sealing and fi xing pipe to wall
Indoor unit
Wall hole
sleeve C
Wall hole cover D
Seal the wall hole
gap with putty H.
Fix the pipe to wall with
pipe fi xing band E.
Cut off the
extra length. Pipe fi xing
Fixing screw F
band E
WARNING
Use the indoor/outdoor unit connecting wire that meets the Standards to connect
•
the indoor and outdoor units and fi x 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 fi xing of the wire could result in a fi re.
Attach the electrical cover securely. If it is attached incorrectly, it could result in a
•
fi re or an electric shock due to dust, water, etc.
Loosen terminal
screw.
Terminal
block
<Connection details>
3 N
15 mm
35 mm
Lead wire
3
Indoor terminal block
Outdoor terminal block
N
Indoor/outdoor unit
connecting wire A
2-core 1.0 mm
2
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 confi rm that they do not move.
• If the connecting wire is incorrectly connected to the terminal block, the unit does
not operate normally.
• If an earth is incorrect, it may cause an electric shock.
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 HEAT) is not stored in the memory. When the main power is turned
on, the unit decides the operation mode by the initial room temperature at restart and
starts operation again.
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.
FOR REAR, RIGHT OR DOWNWARD PIPING
Pipe arrangement
•
Put the refrigerant piping and the drain hose together, then apply piping tape G to
them.
Be careful drain hose is not
heaved.
Cut off in case of right piping. Cut off in case of downward piping.
Insert the piping and the drain hose into the wall hole sleeve C, and hook the upper
•
part of the indoor unit on the installation plate 1.
Check if the indoor unit is hooked securely on the installation plate 1 by moving the
•
unit to left and right.
Thrust the lower part of the indoor unit into the installation plate 1.
•
Firmly apply piping tape G
from the end.
FOR LEFT OR LEFT-REAR PIPING
Pipe arrangement
•
Put the refrigerant piping and the drain hose together, then apply felt tape 7 to
them.
Be careful drain
hose is not heaved.
Cut off in case of left piping.
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
(obtainable at a store) around it.
• Wrap the felt tape 7 around the pipe and the drain hose, then put the pipe in the
back space of the indoor unit.
Liquid pipe
Drain hose
Felt tape 7
Gas pipe
Indoor/outdoor unit
connecting wire A
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.
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.
Use a bandage stopper at
the end of felt tape 7.
Drain cap
Drain cap
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.
Drain hose
3
Put the drain cap into the section to which the drain hose is to
be attached at the rear of the indoor unit.
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.
Drain cap
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 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.
Drain hose
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,
cut the part of packing material (spacer assembly) to hook it on the back rib and
lift the indoor unit as shown in the fi gure below.
Cut part of packing material (spacer assembly) to
hook it on the back rib.
Spacer assembly
5. OUTDOOR UNIT INSTALLATION
INDOOR/OUTDOOR UNIT CONNECTING WIRE CONNECTION 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.
•
Rated Voltage Breaker capacity
230 V 25 A
• 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.
• Make earth wire a little longer than the others.
(more than 35 mm)
For the power supply cord and the indoor/outdoor unit connecting wires, be sure to
•
use the ones in compliance with the standards.
Be sure to push the core until it is hidden and pull each cable to make sure that
•
it is not pulled up incomplete insertion may cause a risk of burning the terminal
blocks.
Power supply cord
Specifi cation
Indoor and Outdoor
connecting wire
Specifi cation
• A means for disconnection of the supply with an isolation switch, or similar
device, in all active conductors shall be incorporated in the fi xed wiring.
• Never cut the power cord and connect it to other wires.
It may cause a fi re.
Connect to the supply terminals and leave a contact
separation of at least 3 mm at each pole to disconnect
the source power pole. (When the power switch is
shut off, it must disconnect all poles.)
35 mm
2
3-core 2.5 mm
with Design 60245 IEC 57.
Cable 2-core 1.0 mm
IEC 57.
or more, in conformity
2
, in conformity with Design 60245
WARNING
15 mm
10 m or less
Securely attach the spacer
assembly in the concave part of
the rib, taking care its direction is
correct as shown in the right.
Spacer
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 fl ow. (Fig. 1)
•
Do not make drain piping as shown in Fig. 2 to 5.
Downward
slope
Water
leakage
(Fig. 1) (Fig. 2) (Fig. 3)
Do not raise.
Water leakage
Waving
Accumulated
drain water
Air
Drain
hose
Indoor terminal block
Loosen terminal screw.
Lead wire
Terminal block
<Connection details>
Power supply cord K
• Use care not to make mis-wiring.
• Firmly tighten the terminal screws to prevent them from loosening.
• After tightening, pull the wires lightly to confi rm that they do not move.
• If the connecting wire is incorrectly connected to the terminal block, the unit
does not operate normally.
~
N
L
CAUTION
3 N
Indoor/outdoor unit
connecting wire A
2-core 1.0 mm
3
N
Outdoor terminal block
~
2
Tip of drain
hose dipped
in water.
Water
leakage
(Fig. 4) (Fig. 5)
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.
Ditch
Less than
50 mm gap
Soft hose
I.D.
15 mm or
hard vinyl
chloride
Be sure to fi x the indoor/outdoor unit
connecting wire A and power supply
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 fi xing
screws to open the
Valve cover
service panel.
WARNING
Be sure to attach the service panel of the outdoor unit securely. If it is not attached
correctly, it could result in a fi re or an electric shock due to dust, water, etc.
6. INDOOR/OUTDOOR UNIT CONNECTION
FINISHING AND TEST RUN
INSTALLATION INFORMATION FOR THE AIR CONDITIONER WITH R410A REFRIGERANT
This room air conditioner adopts an HFC refrigerant (R410A) which will never destroy
•
the ozone layer.
Pay particular attention to the following points, though the basic installation proce-
•
dure 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
special tools and piping parts / materials are required. (Refer to the table below.)
2 Take suffi cient care not to allow water and other contaminations to enter the
R410A refrigerant during storage and installation, since it is more susceptible to
contaminations than R22.
3 For refrigerant piping, use clean, pressure-proof parts / materials specifi cally de-
signed 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.
6-2 FLARING WORK
Main cause of gas leakage is defect in fl aring work.
•
Carry out correct fl aring work in the following procedure.
1
Pipe cutting
• Cut the copper pipe correctly with pipe cutter.
90°
Good
2
Burrs removal
Copper pipe
• 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
avoid to let burrs drop in the piping.
Copper pipe
Spare
reamer
Pipe
cutter
3
Putting nut on
Burr
• Remove fl are nuts attached to indoor and outdoor
units, then put them on pipe having completed
burr removal.
(not possible to put them on after fl aring work)
• Flare nut for R410A pipe differs from R22 pipe.
Refer to the following table for detail.
mm inch R410A R22
ø6.35 1/4 17 17
ø9.52 3/8 22 22
ø12.7 1/2 26 24
ø15.88 5/8 29 27
Tilted
No good
Uneven
Flare nut
Burred
Copper pipe
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
from 7/16 UNF with 20 threads to 1/2 UNF with 20 threads.)
R410A tools
Gauge manifold No
Charge hose No
Gas leak detector No Dedicated for HFC refrigerant.
Torque wrench
Flare tool Yes
Flare gauge New Provided for fl aring work (to be used with R22 fl are tool).
Description New
Electronic scale
for refrigerant
charging
Can R22
tools be
used?
R410A has high pressures beyond the measurement range
of existing gauges.
Port diameters have been changed to prevent any other
refrigerant from being charged into the unit.
Hose material and cap size have been changed to improve
the pressure resistance.
Yes 1/4
No 1/2 and 5/8
Clamp bar hole has been enlarged to reinforce the spring
strength in the tool.
Provided to prevent the back fl ow of oil. This adapter
enables you to use existing vacuum pumps.
New
No: Not substitutable for R410A Yes: Substitutable for R410A
It is diffi cult to measure R410A with a charging cylinder
because the refrigerant bubbles due to high pressure and
high-speed vaporization.
Description
4
Flaring work
• Carry out fl aring work using fl aring tool as shown below.
Flaring tool
Clutch type
Wing nut type
Die
Copper pipe
A
Flare nut
Yor k
Die
Copper pipe
A (mm)
Outside diameter
Flare tool for
R410A clutch type
Conventional fl are tool
Clutch type Wing nut type
ø6.35 mm 0 to 0.5 1.0 to 1.5 1.5 to 2.0
ø9.52 mm 0 to 0.5 1.0 to 1.5 1.5 to 2.0
ø12.7 mm 0 to 0.5 1.0 to 1.5 2.0 to 2.5
ø15.88 mm 0 to 0.5 1.0 to 1.5 2.0 to 2.5
• Firmly hold copper pipe in a die in the dimension shown in the table above.
5
Check
• Compare the fl ared work with fi gure below.
• If fl are is noted to be defective, cut off the fl ared section and do fl aring work again.
Smooth all around
Inside is shining without any scratches.
Even length
all around
6-3 PIPE CONNECTION
Note:
Fasten a fl are nut with a torque wrench as specifi ed in the table below.
When fastened too tight, a fl are 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 fi rst align the center, then tighten the fi rst 3 to 4 turns of fl are nut.
•
Use tightening torque table below as a guideline for indoor unit side union joint
•
section, and tighten using two wrenches. Excessive tightening damages the fl are
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
12.7 49.0 to 56.4 500 to 575
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.
INSULATION AND TAPING
1 Cover piping joints with pipe cover.
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.
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.
6-4 PURGING PROCEDURES·LEAK TEST
PURGING PROCEDURES
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 pipe.
(The stop valve will not work in it initial state fresh out of the factory (totally closed with
cap on).)
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.)
Check the vacuum with the gauge manifold valve, then close the gauge manifold
valve, and stop the vacuum pump.
Leave as it is for one or two minutes. Make sure the pointer gauge manifold valve
remains in the same position. Confi rm that the pressure gauge shows–0.101 Mpa
[Gauge] (–760 mmHg).
Window
Adapter for
preventing the
back fl ow
Compound pressure
gauge (for R410A)
Pressure gauge
(for R410A)
Gauge manifold
valve (for R410A)
Handle High
Charge hose
(for R410A)
Vacuum
(or the vacuum
pump
pump with
the function
to prevent the
back fl ow)
Stop valve
*Close
*Open
Hexagonal wrench
*4 to 5 turns
Remove the gauge manifold valve quickly from the service port of the stop valve.
After refrigerant pipes are connected and evacuated, fully open all stop valves on
both sides of gas pipe and liquid pipe.
Operating without fully opening lowers the performance and this causes trouble.
Pipe length up to 7 m
No gas charge is needed.
Stop valve
Service port
-0.101MPa
(-760 mmHg)
Handle
Low
Stop
valve
Charge hose
(for R410A)
Pipe length exceeding 7 m
Charge the prescribed amount of
gas. (refer to 3)
Tightening torque
N·m kgf·cm
Cap for service port 13.7 to 17.7 140 to 180
Cap for stop valve 19.6 to 29.4 200 to 300
6-5 TEST RUN
MS type
Before performing the test run, recheck 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.
A thermostat does not work during this time. After 30 minutes the unit will start the
EMERGENCY OPERATION at a fi xed temperature setting of 24°C in COOL MODE or
HEAT MODE.
Perform test run in the following procedure.
•
PROCEDURE
Press the EMERGENCY OPERATION switch.
•
1 Press it once, and after test run for 30 minutes the EMERGENCY COOL MODE starts.
2 Press it once more, and the operation stops.
(The operation mode changes in order of 1 ~ 2 every time the EMERGENCY
OPERATION switch is pressed.)
Mode Operation Indicator lamp
1
COOL
(Light) (Off)
2
STOP
(Off) (Off)
MSH type
Before performing the test run, recheck 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.
A thermostat does not work during this time. After 30 minutes the unit will start the
EMERGENCY OPERATION at a fi xed temperature setting of 24°C in COOL MODE or
HEAT MODE.
Perform test run in the following procedure.
•
PROCEDURE
Press the EMERGENCY OPERATION switch.
•
1 Press it once, and after test run for 30 minutes the EMERGENCY COOL MODE starts.
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
OPERATION switch is pressed.)
Mode Operation Indicator lamp
1
COOL
(Light) (Off)
2
HEAT
(Off) (Light)
STOP
3
(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.
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.
EMERGENCY
OPERATION switch
EMERGENCY
OPERATION switch
Tighten the cap to the service port to obtain the initial status.
Retighten the cap.
Leak test
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 fi lters, 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.
•
7. FOR MOVEMENT AND MAINTENANCE
7-1 REMOVING AND REINSTALLING THE FRONT PANEL
FRONT PANEL REMOVAL
4 Release the hooks.
Hold this concave section and pull the bottom
1 Remove the screw caps.
2 Remove three screws.
3 Pull the bottom.
FRONT PANEL REINSTALLATION
Note:
Do not open the front panel up beyond the level position.
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
panel.
1Point the
horizontal
vane slightly
downward.
2 Attach the bottom of the front panel under the horizontal vane.
3 Fit in the top of the front panel.
4 Fit in the bottom of the front panel and tighten it using screws.
5 Push the section of the front panel marked by the arrow and fi t the panel into the
air conditioner.
7-2 REMOVING THE INDOOR UNIT
Remove the bottom of the indoor unit from the installation plate.
1 Remove the front panel. (See FRONT PANEL REMOVAL shown above.)
2 Insert fl at screwdrivers into the square holes at the left and right bottom of the
indoor unit and push them up; the bottom of the indoor unit goes down and the
hooks are released.
forward to remove the front panel.
3
5 Push
24
Horizontal vane
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 specifi ed amount of the refrigerant, while operating the air conditioner
for cooling.
Note:
In case of adding refrigerant, comply with the quantity specifi ed 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 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
water (under 40°C) during cold season. But never use naked fi re or steam.
Union
Stop valve
Indoor unit
Refrigerant gas
cylinder operating
valve
Refrigerant (liquid)
Liquid pipe
Gas pipe
Service port
Gauge manifold valve
(for R410A)
Charge hose (for R410A)
Refrigerant gas cylinder for
R410A with siphon
Electronic scale for refrigerant charging
Outdoor unit
Square hole
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
the following EU regulations:
• Low Voltage Directive 2006/95/EC
• Electromagnetic Compatibility Directive
2004/108/EC
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU,
TOKYO 100-8310, JAPAN
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