Air-Conditioners
PEA-RP·EA
FOR INSTALLER
TEMP.
INSTALLATION
MANUAL
For safe and correct use, please read this installation manual thoroughly before installing the air-conditioner unit.
ON/OFF
Contents
Install the air conditioner referring to this manual and attached ILLUSTRATION BOOK FOR INSTALLATION.
1.
2.
3.
4.
5.
6.
7.
8.
9.
Safety precautions ................................................................................... 2
Installation location .................................................................................. 3
Installing the indoor unit ........................................................................... 3
Installing the refrigerant piping ................................................................. 3
Drainage piping work (Fig. 5-1) ................................................................ 4
Electrical work .......................................................................................... 4
Duct work (Fig. 7-1) ................................................................................. 8
Test run .................................................................................................... 8
System controll (Fig.9-1) ........................................................................ 10
1. Safety precautions
s Before installing the unit, make sure you read all the “Safety precautions”.
s Please report to or take consent by the supply authority before connection to the system.
Warning:
Describes precautions that must be observed to prevent danger of injury or
death to the user.
Caution:
Describes precautions that must be observed to prevent damage to the unit.
After installation work has been completed, explain the “Safety Precautions,” use,
and maintenance of the unit to the customer according to the information in the
Operation Manual and perform the test run to ensure normal operation. Both the
Installation Manual and Operation Manual must be given to the user for keeping.
These manuals must be passed on to subsequent users.
: Indicates an action that must be avoided.
: Indicates that important instructions must be followed.
: Indicates a part which must be grounded.
: Indicates that caution should be taken with rotating parts.
: Indicates that the main switch must be turned off before servicing.
: Beware of electric shock.
: Beware of hot surface.
ELV :
At servicing, please shut down the power supply for both the Indoor and
Outdoor Unit.
Warning:
Carefully read the labels affixed to the main unit.
Warning:
• The unit must not be installed by the user. Ask a dealer or an authorized
technician to install the unit. If the unit is installed incorrectly, water leakage,
electric shock, or fire may result.
• For installation work, follow the instructions in the Installation Manual and
use tools and pipe components specifically made for use with R410A refrigerant. The R410A refrigerant in the HFC system is pressurized 1.6 times the
pressure of usual refrigerants. If pipe components not designed for R410A
refrigerant are used and the unit is not installed correctly, the pipes may
burst and cause damage or injuries. In addition, water leakage, electric shock,
or fire may result.
• The unit must be installed according to the instructions in order to minimize
the risk of damage from earthquakes, typhoons, or strong winds. An incorrectly installed unit may fall down and cause damage or injuries.
• The unit must be securely installed on a structure that can sustain its weight.
If the unit is mounted on an unstable structure, it may fall down and cause
damage or injuries.
• If the air conditioner is installed in a small room, measures must be taken to
prevent the refrigerant concentration in the room from exceeding the safety
limit in the event of refrigerant leakage. Consult a dealer regarding the appropriate measures to prevent the allowable concentration from being exceeded. Should the refrigerant leak and cause the concentration limit to be
exceeded, hazards due to lack of oxygen in the room may result.
• Ventilate the room if refrigerant leaks during operation. If refrigerant comes
into contact with a flame, poisonous gases will be released.
• All electric work must be performed by a qualified technician according to
local regulations and the instructions given in this manual. The units must
be powered by dedicated power lines and the correct voltage and circuit
breakers must be used. Power lines with insufficient capacity or incorrect
electrical work may result in electric shock or fire.
• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes,
to connect the refrigerant pipes. If the pipes are not connected correctly, the
unit will not be properly grounded and electric shock may result.
2
• Use only specified cables for wiring. The connections must be made securely
without tension on the terminals. If the cables are connected or installed
incorrectly, overheating or fire may result.
• The terminal block cover of the outdoor unit must be firmly attached. If the
cover is mounted incorrectly and dust and moisture enter the unit, electric
shock or fire may result.
• When installing or moving the air conditioner, use only the specified refrigerant (R410A) to charge the refrigerant lines. Do not mix it with any other
refrigerant and do not allow air to remain in the lines. Air enclosed in the
lines can cause pressure peaks resulting in a rupture and other hazards.
• Use only accessories authorized by Mitsubishi Electric and ask a dealer or
an authorized technician to install them. If accessories are incorrectly installed, water leakage, electric shock, or fire may result.
• Do not alter the unit. Consult a dealer for repairs. If alterations or repairs are
not performed correctly, water leakage, electric shock, or fire may result.
• The user should never attempt to repair the unit or transfer it to another
location. If the unit is installed incorrectly, water leakage, electric shock, or
fire may result. If the air conditioner must be repaired or moved, ask a dealer
or an authorized technician.
• After installation has been completed, check for refrigerant leaks. If refrigerant leaks into the room and comes into contact with the flame of a heater or
portable cooking range, poisonous gases will be released.
1.1. Before installation
Caution:
• Do not use the unit in an unusual environment. If the air conditioner is installed in areas exposed to steam, volatile oil (including machine oil), or
sulfuric gas, areas exposed to high salt content such as the seaside, or areas where the unit will be covered by snow, the performance can be significantly reduced and the internal parts can be damaged.
• Do not install the unit where combustible gases may leak, be produced, flow,
or accumulate. If combustible gas accumulates around the unit, fire or explosion may result.
• Do not keep food, plants, caged pets, artwork, or precision instruments in
the direct airflow of the indoor unit or too close to the unit, as these items
can be damaged by temperature changes or dripping water.
• When the room humidity exceeds 80% or when the drainpipe is clogged,
water may drip from the indoor unit. Do not install the indoor unit where
such dripping can cause damage. The outdoor unit produces condensation
during the heating operation. Make sure to provide drainage around the outdoor unit if such condensation is likely to cause damage.
• When installing the unit in a hospital or communications office, be prepared
for noise and electronic interference. Inverters, home appliances, high-frequency medical equipment, and radio communications equipment can cause
the air conditioner to malfunction or breakdown. The air conditioner may
also affect medical equipment, disturbing medical care, and communications
equipment, harming the screen display quality.
1.2. Before installation (relocation)
Caution:
• Be extremely careful when transporting the units. Two or more persons are
needed to handle the unit, as it weighs 20 kg or more. Do not grasp the
packaging bands. Wear protective gloves to remove the unit from the packaging and to move it, as you can injure your hands on the fins or other parts.
• Be sure to safely dispose of the packaging materials. Packaging materials,
such as nails and other metal or wooden parts may cause stabs or other
injuries.
• Thermal insulation of the drainpipe is necessary to prevent condensation. If
the drainpipe is not properly insulated, condensation will be formed and the
ceiling, floor, or important items may be damaged.
• Install the drainpipe according to this Installation Manual to ensure proper
drainage. Place thermal insulation on the pipes to prevent condensation. If
the drainpipe is installed incorrectly, water leakage and damage to the ceiling, floor, furniture, or other possessions may result.
• The base and attachments of the outdoor unit must be periodically checked
for looseness, cracks or other damage. If such defects are left uncorrected,
the unit may fall down and cause damage or injuries.
• Do not clean the air conditioner unit with water. Electric shock may result.
• Tighten all flare nuts to specification using a torque wrench. If tightened too
much, the flare nut can break after an extended period and refrigerant can
leak out.
1.3. Before electric work
Caution:
• Be sure to install circuit breakers. If not installed, electric shock may result.
• For the power lines, use standard cables of sufficient capacity. Otherwise, a
short circuit, overheating, or fire may result.
• When installing the power lines, do not apply tension to the cables. If the
connections are loosened, the cables can snap or break and overheating or
fire may result.
• Be sure to ground the unit. Do not connect the ground wire to gas or water
pipes, lighting rods, or telephone grounding lines. If the unit is not properly
grounded, electric shock may result.
• Use circuit breakers (ground fault interrupter, isolating switch (+B fuse), and
molded case circuit breaker) with the specified capacity. If the circuit breaker
capacity is larger than the specified capacity, breakdown or fire may result.
1.4. Before starting the test run
Caution:
• Turn on the main power switch more than 12 hours before starting operation.
Starting operation just after turning on the power switch can severely damage the internal parts. Keep the main power switch turned on during the
operation season.
• Before starting operation, check that all panels, guards and other protective
parts are correctly installed. Rotating, hot, or high voltage parts can cause
injuries.
• Do not operate the air conditioner without the air filter set in place. If the air
filter is not installed, dust may accumulate and breakdown may result.
• Do not touch any switch with wet hands. Electric shock may result.
• Do not touch the refrigerant pipes with bare hands during operation. The
refrigerant pipes are hot or cold depending on the condition of the flowing
refrigerant. If you touch the pipes, burns or frostbite may result.
• After stopping operation, be sure to wait at least five minutes before turning
off the main power switch. Otherwise, water leakage or breakdown may result.
1.5. Using R410A refrigerant air conditioners
Caution:
• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes,
to connect the refrigerant pipes. Make sure the insides of the pipes are clean
and do not contain any harmful contaminants such as sulfuric compounds,
oxidants, debris, or dust. Use pipes with the specified thickness. (Refer to the
4.1.) Note the following if reusing existing pipes that carried R22 refrigerant.
- Replace the existing flare nuts and flare the flared sections again.
- Do not use thin pipes. (Refer to the 4.1.)
• Store the pipes to be used during installation indoors and keep both ends of
the pipes sealed until just before brazing. (Leave elbow joints, etc. in their
packaging.) If dust, debris, or moisture enters the refrigerant lines, oil deterioration or compressor breakdown may result.
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration
oil applied to the flared sections. If mineral oil is mixed in the refrigeration
oil, oil deterioration may result.
• Do not use refrigerant other than R410A refrigerant. If another refrigerant is
used, the chlorine will cause the oil to deteriorate.
• Use the following tools specifically designed for use with R410A refrigerant.
The following tools are necessary to use R410A refrigerant. Contact your
nearest dealer for any questions.
Tools (for R410A)
Gauge manifold
Charge hose
Gas leak detector
Torque wrench
Flare tool
Size adjustment gauge
Vacuum pump adapter
Electronic refrigerant charging scale
• Be sure to use the correct tools. If dust, debris, or moisture enters the refrigerant lines, refrigeration oil deterioration may result.
• Do not use a charging cylinder. If a charging cylinder is used, the composition of the refrigerant will change and the efficiency will be lowered.
2. Installation location
•
•
•
•
•
•
•
•
•
•
3.2. Unit dimension and service space (Fig. 3-2)
A
B
C
D
E
Air intake
Air outlet
Service space
Drain pan
Electrical parts box
Models
W
RP3
785
RP4
1055
RP5
1255
RP6
1415
*B : Suspension bolt pitch
H
690
690
690
690
D
428
428
428
428
A
650
920
1120
1306
(mm)
B
690
960
1160
1346
3.3. Suspension structure (Give site of suspension
strong structure) (Fig. 3-3)
• The ceiling work differs according to the construction of the building. Building constructors and interior decorators should be consulted for details.
1 Wooden structures
• Use tie beams (single storied houses) or second floor beams (two story houses)
as reinforcing members.
• Wooden beams for suspending air conditioners must be sturdy and their sides
must be at least 6 cm long if the beams are separated by not more than 90 cm and
their sides must be at least 9 cm long if the beams are separated by as much as
180 cm. The size of the suspension bolts should be ø10 (3/8"). (The bolts do not
(mm)
come with the unit.)
Models
B
A Ceiling
B Rafter
RP3
690
C Beam
RP4
960
D Roof beam
RP5
1160
RP6
1346
2 Ferro-concrete structures
Secure the suspension bolts using the method shown, or use steel or wooden hangers, etc. to install the suspension bolts.
E Use inserts rated at 100-150 kg each (procure locally)
F Suspension bolts M10 (3/8") (procure locally)
G Steel reinforcing rod
3.4. Unit suspension procedures (Fig. 3-4)
Suspend the main unit as shown in the Fig. 3-4.
1 When no air intake duct flange is used.
2 When air intake duct flange is used.
A
B
C
D
E
F
Washer (procure locally)
2 nuts (procure locally)
Suspension bolt (procure locally)
Air intake
Air outlet
Air intake duct flange
Caution:
• Make sure that the unit is level when installed.
• Work with the protection gloves when you install the unit. (Take care of a
hurt.)
To prevent getting hurt.
4. Installing the refrigerant piping
Select a location so that air can be blown into all corners of the room.
Avoid locations exposed to outside air.
Select a location free of obstructions to the airflow in and out of the unit.
Avoid locations exposed to steam or oil vapour.
Avoid locations where combustible gas may leak, settle or be generated.
Avoid installation near machines emitting high-frequency waves (high-frequency
welders, etc.)
Avoid locations where the airflow is directed at a fire alarm sensor. (Hot air could
trigger the alarm during the heating operation.)
Avoid places where acidic solutions are frequently handled.
Avoid places where sulphur-based or other sprays are frequently used.
Must be installed at least 1.8 m above floor or grade level.
Warning:
The unit must be securely installed on a structure that can sustain its weight.
4.1. Precautions for devices that use R410A refrigerant
• Refer to the 1.5. for precautions not included below on using air conditioners
with R410A refrigerant.
• Use ester oil, ether oil, alkylbenzene oil (small amount) as the refrigeration
oil applied to the flared sections.
• Use C1220 copper phosphorus, for copper and copper alloy seamless pipes,
to connect the refrigerant pipes. Use refrigerant pipes with the thicknesses
specified in the table to the below. Make sure the insides of the pipes are
clean and do not contain any harmful contaminants such as sulfuric compounds, oxidants, debris, or dust.
Liquid pipe
Gas pipe
RP3-6
ø9.52 thickness 0.8 mm
ø15.88 thickness 1.0 mm
• Do not use pipes thinner than those specified above.
3. Installing the indoor unit
3.1. Check the indoor unit accessories (Fig. 3-1)
The indoor unit is provided with the following accessories.
1
2
3
Accessory name
Pipe cover (for refrigerant piping joint)
small diameter
large diameter
Band
Remote controller
Q’ty
Warning:
When installing or moving the air conditioner, use only the specified refrigerant (R410A) to charge the refrigerant lines. Do not mix it with any other refrigerant and do not allow air to remain in the lines. Air enclosed in the lines can
cause pressure peaks resulting in a rupture and other hazards.
1
1
4
1
3
4.2. Connecting pipes (Fig. 4-1)
4.4. Refrigerant piping (Fig. 4-4)
• When commercially available copper pipes are used, wrap liquid and gas pipes
with commercially available insulation materials (heat-resistant to 100 °C or more,
thickness of 12 mm or more).
• The indoor parts of the drain pipe should be wrapped with polyethylene foam insulation materials (specific gravity of 0.03, thickness of 9 mm or more).
• Apply thin layer of refrigerant oil to pipe and joint seating surface before tightening
flare nut.
• Use two wrenches to tighten piping connections.
• Air-purge the refrigerant piping using your own refrigerant gas (don’t air-purge the
refrigerant charged in the outdoor unit).
• Use leak detector or soapy water to check for gas leaks after connections are
completed.
• Use refrigerant piping insulation provided to insulate indoor unit connections. Insulate carefully.
Heat insulation for refrigerant pipes:
1 Wrap the enclosed large-sized pipe cover around the gas pipe, making sure that
the end of the pipe cover touches the side of the unit.
2 Wrap the enclosed small-sized pipe cover around the liquid pipe, making sure
that the end of the pipe cover touches the side of the unit.
3 Secure both ends of each pipe cover with the enclosed bands. (Attach the bands
20 mm from the ends of the pipe cover.)
A Flare cutting dimensions
Copper pipe O.D.
(mm)
ø6.35
ø9.52
ø12.7
ø15.88
Flare dimensions
øA dimensions (mm)
8.7 - 9.1
12.8 - 13.2
16.2 - 16.6
19.3 - 19.7
B Flare nut tightening torque
Copper pipe O.D.
(mm)
ø6.35
ø9.52
ø12.7
ø15.88
ø15.88
Flare nut O.D.
(mm)
17
22
26
29
36
Tightening torque
(N·m)
14 - 18
34 - 42
49 - 61
68 - 82
100 - 120
C Apply refrigerating machine oil over the entire flare seat surface.
D Use the flare nuts as follows.
RP3
Flare nut attached to
indoor liquid valve
Flare nut attached to
indoor gas valve
Flare nut attached to
outdoor liquid valve
Flare nut attached to
outdoor gas valve
Indoor unit (Liquid)
Indoor unit (Gas)
Outdoor unit (Liquid)
Outdoor unit (Gas)
RP4-6
Flare nut attached to
indoor liquid valve
* Flare nut in outdoor
unit accessories
Flare nut attached to
outdoor liquid valve
Flare nut attached to
outdoor gas valve
* In case that the flare nut attached to indoor gas valve is used, gas leakage or even
pipe extraction will occur.
• When bending the pipes, be careful not to break them. Bend radii of 100 mm to
150 mm are sufficient.
• Make sure the pipes do not contact the compressor. Abnormal noise or vibration
may result.
1 Pipes must be connected starting from the indoor unit.
Flare nuts must be tightened with a torque wrench.
2 Flare the liquid pipes and gas pipes and apply a thin layer of refrigeration oil
(Applied on site).
• When usual pipe sealing is used, refer to Table 1 for flaring of R410A refrigerant
pipes.
The size adjustment gauge can be used to confirm A measurements.
Table 1 (Fig. 4-2)
Copper pipe O.D.
(mm)
ø6.35 (1/4")
ø9.52 (3/8")
ø12.7 (1/2")
ø15.88 (5/8")
A (mm)
Flare tool for R410A
Flare tool for R22·R407C
Clutch type
0 - 0.5
1.0 - 1.5
0 - 0.5
1.0 - 1.5
0 - 0.5
1.0 - 1.5
0 - 0.5
1.0 - 1.5
A Die
B Copper pipe
Refrigerant and Drainage Piping Sizes
RP3-6
Liquid
ODø9.52 (3/8")
Refrigerant
piping
Gas
ODø15.88 (5/8")
Drainage plug
R1
Model
Item
4.3. Refrigerant and drainage piping locations of indoor
unit (Fig. 4-3)
A
B
C
D
E
Refrigerant pipe (gas)
Refrigerant pipe (liquid)
Drain pipe
Air filter (option)
Ceiling
4
A
B
C
D
E
F
G
H
I
J
Refrigerant pipe and insulating material
Pipe cover (large)
Pipe cover (small)
Refrigerant pipe (gas)
Refrigerant pipe (liquid)
Band
Cross-sectional view of connection
Pipe
Insulating material
Squeeze
• After connecting the refrigerant piping to the indoor unit, be sure to test the pipe
connections for gas leakage with nitrogen gas. (Check that there is no refrigerant
leakage from the refrigerant piping to the indoor unit.)
Conduct the airtightness test before connecting the outdoor unit stop valve and the
refrigerant pipe.
If the test is conducted after the valve and pipe are connected, gas, which is used
for checking the airtightness, will leak from the stop valve and flow into the outdoor
unit, resulting in abnormal operation.
4.5. For twin/triple combination
Refrigerant piping limitation of length, height difference are shown in the figure. (Fig.
4-5)
A
B
C
D
Indoor unit
Outdoor unit
Multi distribution pipe (option)
Height difference (Indoor unit-Outdoor unit) Max. 30 m
E Height difference (Indoor unit-Indoor unit) Max. 1 m
5. Drainage piping work (Fig. 5-1)
• The drainage pipe should be arranged so that the discharge end is lower than the
other end, as shown in the figure opposite.
• Place the trap outside the unit.
• After connecting the drainage pipe, make sure that water is discharged properly
and that there are no leaks.
A Indoor unit
B Trap
C Drainge piping connection 1RP male
H1: 50 mm or more
H2: 1/2 H1 or more
6. Electrical work
6.1. Precautions (Fig. 6-1)
• The compressor will not operate unless the power supply phase connection is
correct.
• Grounding protection with a no-fuse breaker (earth leakage breaker [ELB]) is usually installed for D.
• The connection wiring between the outdoor and indoor units can be extended up
to a maximum of 50 meters, and the total extension including the crossover wiring
between rooms is a maximum of 80 m.
A switch with at least 3 mm contact separation in each pole shall be provided by the
air conditioner installation.
* Label each breaker according to purpose (heater, unit etc.).
A
B
C
D
E
Indoor unit
Outdoor unit
Remote controller
Main switch/fuse
Grounding
6.2. Indoor unit
<SW No. 4>
1. Remove the two electrical parts cover (2 screws). (Fig. 6-2)
SW contents Main
Intake temperature display
ON/OFF
Comment
Yes/No
When you do not want to display the intake temperature, set to “No”.
A
B
C
D
E
F
Electrical parts cover
Knockout holes
Terminal bed (Indoor/Outdoor unit)
Terminal bed (Remote controller)
Indoor contoroller board
Indoor/Power board
2. Open knockout holes. (Fig. 6-3)
(Recommend to use a screwdriver or the like for this work.)
A
B
C
D
Control box
Knockout hole
Remove
Knockout hole
3. Wire the Indoor/Outdoor connecting cables with buffer bushing for tensile force.
(PG connection or the like) Wire the remote controller cables using ordinary bushing. (Fig. 6-4)
• Install the earth cable, longer than other cables. (The earth cable dia. :Thicker
than 1.6 mm)
E Knockout hole for the Indoor/Outdoor connecting cable.
Use buffer bushing to prevent tensile force to the terminal bed.
F The Indoor/Outdoor connecting cables
G Tensile force
H Knockout hole for the remote controller cables. Use ordinary bushing.
I The remote controller cables
s Selecting non-fuse breaker (NF) or earth leakage breaker (NV).
6.3. Remote controller (Wired remote controller)
1) Installing procedures
(1) Select an installing position for the remote controller. (Fig. 6-5)
The temperature sensors are located on both remote controller and indoor unit.
s Procure the following parts locally:
Two piece switch box
Thin copper conduit tube
Lock nuts and bushings
6.4. Function settings (Wired remote controller) (Fig.
6-8)
1
⁄
2
⁄
3
⁄
4
⁄
Mode number
Setting number
Refrigerant address
Unit number
Changing the power voltage setting
• Be sure to change the power voltage setting depending on the voltage used.
1 Go to the function setting mode.
Switch OFF the remote controller.
Press the A and B buttons simultaneously and hold them for at least 2
seconds. FUNCTION will start to flash.
2 Use the C button to set the refrigerant address (3) to 00.
3 Press D and [--] will start to flash in the unit number (4) display.
4 Use the C button to set the unit number (4) to 00.
5 Press the E MODE button to designate the refrigerant address/unit number. [--]
will flash in the mode number (1) display momentarily.
6 Press the F buttons to set the mode number (1) to 04.
7 Press the G button and the current set setting number (2) will flash.
Use the F button to switch the setting number in response to the power supply
voltage to be used.
Power supply voltage
240 V
: setting number = 1
220 V, 230 V : setting number = 2
8 Press the MODE button E and mode and the setting number (1) and (2) will
change to being on constantly and the contents of the setting can be confirmed.
9 Press the FILTER A and TEST RUN B buttons simultaneously for at least two
seconds. The function selection screen will disappear momentarily and the air
conditioner OFF display will appear.
A Remote controller profile
B Required clearances surrounding the remote controller
C Installation pitch
(2) Seal the service entrance for the remote controller cord with putty to prevent
possible invasion of dew drops, water, cockroaches or worms. (Fig. 6-6)
A For installation in the switch box:
B For direct installation on the wall select one of the following:
• Prepare a hole through the wall to pass the remote controller cord (in order to run
the remote controller cord from the back), then seal the hole with putty.
• Run the remote controller cord through the cut-out upper case, then seal the cutout notch with putty similarly as above.
B-1. To lead the remote controller cord from the back of the controller:
B-2. To run the remote controller cord through the upper portion:
(3) For direct installation on the wall
C
D
E
F
G
H
I
J
Wall
Conduit
Lock nut
Bushing
Switch box
Remote controller cord
Seal with putty
Wood screw
2) Connecting procedures (Fig. 6-7)
1 Connect the remote controller cord to the terminal block.
A To TB5 on the indoor unit
B TB6 (No polarity)
2 Set the dip switch No.1 shown below when using two remote controller’s for the
same group.
C Dip switches
Setting the dip switches
The dip switches are at the bottom of the remote controller. Remote controller Main/
Sub and other function settings are performed using these switches. Ordinarily, only
change the Main/Sub setting of SW No.1. (The factory settings are all “ON”.)
<SW No. 1>
SW contents Main
Remote controller Main/Sub setting
ON/OFF
Comment
Main/Sub
Set one of the two remote controllers at one group to “Main”
<SW No. 2>
SW contents Main
When remote controller power turned on
ON/OFF
Normally on/Timer mode on
When you want to return to the timer mode when the power is restored
after a power failure when a Program timer is connected, select “Timer
mode”.
Comment
<SW No. 3>
SW contents Main
Cooling/heating display in AUTO mode
ON/OFF
Yes/No
When you do not want to display “Cooling” and “Heating” in the Auto
mode, set to “No”.
Comment
5
Initial setting
Mode no.
Setting no.
1
2
1
2
3
1
2
3
1
2
1
2
01
02
03
04
05
Mode no.
PUHZ
Setting no.
07
08
09
10
11
12
PLH/PLA-P·AA(H)
PLA-RP·AA
1
2
3
1
2
3
1
2
3
1
2
1
2
3
1
2
Function table
Select unit number 00
Mode
Power failure automatic recovery
Indoor temperature detecting
LOSSNAY connectivity
Power voltage
Auto mode
Outdoor unit
PUH
PU
–
–
PLH/PLAP·KA(H)
PCH/PCAP·GA(H)
–
–
–
PKH/PKAP·GAL(H)
Indoor unit
PKH/PKAP·FAL(H)
–
PMH-P·BA
PSH/PSAP·GA(H)
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
Settings
Not available
Available
Indoor unit operating average
Set by indoor unit’s remote controller
Remote controller’s internal sensor
Not Supported
Supported (indoor unit is not equipped with outdoor-air intake)
Supported (indoor unit is equipped with outdoor-air intake)
240 V
220 V, 230 V
Energy saving cycle automatically enabled
Energy saving cycle automatically disabled
Select unit numbers 01 to 03 or all units (AL [wired remote controller]/07 [wireless remote controller])
Settings
Mode
100Hr
Filter sign
2500Hr
No filter sign indicator
Standard (PLH/PLA-P·AA(H)/PLA-RP·AA)/Silent (PLH/PLA-P·KA(H),
Fan speed
PCH/PCA)
High ceiling 1 (PLH/PLA-P·AA(H)/PLA-RP·AA)/Standard (PLH/PLAP·KA(H), PCH/PCA)
High ceiling 2 (PLH/PLA-P·AA(H)/PLA-RP·AA)/High ceiling (PLH/PLAP·KA(H), PCH/PCA)
No. of air outlets
4 directions
3 directions
2 directions
Installed options (high-performance filter)
Not supported
Supported
Up/down vane setting
No vanes
Equipped with vanes (vanes angle setup 1)
Equipped with vanes (vanes angle setup 2)
Energy saving air flow
Disabled
(Heating mode)
Enabled
6
PEHD/PEAD-P·EA(H)
PEA-RP·EA
PEAD-RP·EA
Mode no.
01
02
03
04
05
Mode no.
07
Setting no.
1
2
1
2
3
1
2
3
1
2
1
2
setting
Setting no.
1
2
3
setting
1
08
2
3
09
10
11
12
1
2
3
1
2
1
2
3
1
2
6.5. Field electrical wiring (Power wiring specifications)
Wiring
Models (Outdoor unit)
Indoor unit power supply
Outdoor unit
Phase
Power supply
Frequency & Voltage
Input capacity
Indoor unit (A)
Main switch/Fuse
Outdoor unit (A)
Outdoor unit
Wire No.
Power supply
Size mm2
Indoor unit/Outdoor unit connecting
Wire No. × size (mm2)
Remote controller-Indoor unit
Wire No. × size (mm2)
Control circuit rating
RP3V
RP4, 5, 6 V
~/N (single), 50Hz, 220 - 230 - 240V
~/N (Single)
50 Hz, 220 - 230 - 240V
–
32/32
3
4
–
63/63
3
10
3 × 2.5 Cable (polar)
Cable 2C × 0.69
* This wire is accessory of remote controller (Wire length: 10 m, Non-polar)
Indoor unit-Outdoor unit: S1-S2 AC 220V-230V-240V, S2-S3 DC24V, Remote controller-Indoor unit: DC 14V
Notes:
1. The power cable thickness have been selected for a voltage drop up to 20 m. If the cable length exceeds 20 m, select a cable thickness appropriate to that
estimated voltage drop.
2. Be careful about choosing the installation location for the earth leakage breaker and how it is installed as the initial electric current may cause it to malfunction.
3. Power supply cords and Indoor unit/Outdoor unit connecting cords shall not be lighter than polychloroprene sheathed flexible cord. (design 245 IEC 57)
7
7. Duct work (Fig. 7-1)
Use the canvas duct for connecting the indoor unit and the duct.
Use fire-proof material for the duct parts.
Make sure that the duct has sufficient heat insulation.
A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
Indoor unit
Air intake duct flange
Drain pan
Air outlet duct flange
Electrical parts box
Air intake
Air outlet
Leave clearance to prevent short cycle
Ceiling
Air intake (procure locally)
Air filter (procure locally)
Air intake duct (procure locally)
Canvas duct (procure locally)
Air outlet duct (procure locally)
Air outlet grille (procure locally)
Notes:
• An outlet duct of 850 mm or more is needed for construction.
• Connect the main body of the air conditioner and the duct so that their
potentials are equal.
• The standard external static pressure should be 125 Pa.
• Connect an earth cable R from the air intake duct E to the earth terminal Q.
Then, connect another earth cable R from the earth terminal Q to the air
outlet duct F.
8. Test run
8.1. Before test run
s After completing installation and the wiring and piping of the indoor and
outdoor units, check for refrigerant leakage, looseness in the power supply
or control wiring, wrong polarity, and no disconnection of one phase in the
supply.
s Use a 500-volt megohmmeter to check that the resistance between the power
Ω.
supply terminals and ground is at least 1.0MΩ
s Do not carry out this test on the control wiring (low voltage circuit) terminals.
Unit replacement operation
s When reusing existing pipes that carried R22 refrigerant, replacement operation must be performed before performing a test run.
• If new pipes are used, these procedures are not necessary.
• If existing pipes that carried R22 refrigerant are used for the RP3 model, these
procedures are not necessary. (The replacement operation cannot be performed.)
Replacement operation procedures
1 Supply power.
2 Set DIP switch SW8-2 on the control board of the outdoor unit to ON to start
replacement operation.
* The replacement operation is performed using the cooling system. Cool air
will flow from the indoor unit during the replacement operation.
* During the replacement operation, TEST RUN is displayed on the remote controller
and LED1 and LED2 on the control board of the outdoor unit flash together.
3 Replacement operation requires at least two hours to complete.
* After setting switch SW8-2 to ON, the unit automatically stops after two hours.
* Replacement operation can be performed repeatedly by setting switch SW8-2
from OFF to ON. Wait at least two hours before starting replacement operation. (If operation is started in less than two hours, the existing pipes will not be
cleaned and the unit may be damaged.)
4 Set switch SW8-2 to OFF. (Replacement operation is complete.)
* If the indoor temperature is less than 15°C, the compressor will operate intermittently but the unit is not faulty.
8.2. Test run
The following 2 methods are available.
8.2.1. Using wired remote controller (Fig. 8-1)
1
2
3
4
5
6
7
8
8.2.2. Using SW4 in outdoor unit
SW4-1
SW4-2
SW4-1
SW4-2
Warning:
Ω.
Do not use the air conditioner if the insulation resistance is less than 1.0MΩ
Insulation resistance
After installation or after the power source to the unit has been cut for an extended
period, the insulation resistance will drop below 1 MΩ due to refrigerant accumulating in the compressor. This is not a malfunction. Perform the following procedures.
1. Remove the wires from the compressor and measure the insulation resistance of
the compressor.
2. If the insulation resistance is below 1 MΩ, the compressor is faulty or the resistance dropped due the accumulation of refrigerant in the compressor.
3. After connecting the wires to the compressor, the compressor will start to warm
up after power is supplied. After supplying power for the times indicated below,
measure the insulation resistance again.
• The insulation resistance drops due to accumulation of refrigerant in the compressor. The resistance will rise above 1 MΩ after the compressor is warmed
up for two to three hours.
(The time necessary to warm up the compressor varies according to atmospheric conditions and refrigerant accumulation.)
• To operate the compressor with refrigerant accumulated in the compressor,
the compressor must be warmed up at least 12 hours to prevent breakdown.
4. If the insulation resistance rises above 1 MΩ, the compressor is not faulty.
Caution:
• The compressor will not operate unless the power supply phase connection
is correct.
• Turn on the power at least 12 hours before starting operation.
• Starting operation immediately after turning on the main power switch can result in
severe damage to internal parts. Keep the power switch turned on during the operational season.
s The followings must be checked as well.
• The outdoor unit is not faulty. LED1 and LED2 on the control board of the outdoor
unit flash when the outdoor unit is faulty.
• Both the gas and liquid stop valves are completely open.
• A protective sheet covers the surface of the DIP switch panel on the control board of
the outdoor unit. Remove the protective sheet to operate the DIP switches easily.
• Make sure that the all of the SW5 DIP switches for function changes on the control
board of the outdoor unit are set to OFF. If all of the SW5 switches are not set to
OFF, record the settings and then set all of the switches to OFF. Begin recovering
the refrigerant. After moving the unit to a new location and completing the test run,
set the SW5 switches to the previously recorded settings.
8
Turn on the power at least 12 hours before the test run.
Press the [TEST] button twice. ➡ “TEST RUN” liquid crystal display
Press the [Mode selection] button. ➡ Make sure that wind is blown out.
Press the [Mode selection] button and switch to the cooling (or heating) mode.
➡ Make sure that cold (or warm) wind is blown out.
Press the [Fan speed] button. ➡ Make sure that the wind speed is switched.
Switch the wind direction by pressing the [Airflow] or [Louver] button.
➡ Make sure that horizontal outlet, downward outlet, and other wind direction
adjustments are possible.
➡ Check operation of the outdoor unit fan.
Release test run by pressing the [ON/OFF] button. ➡ Stop
After the checks, always turn off the power.
ON
OFF
ON
ON
Cooling operation
Heating operation
* After performing the test run, set SW4-1 to OFF.
• After power is supplied, a small clicking noise may be heard from the inside of the outdoor
unit. The electronic expansion valve is opening and closing. The unit is not faulty.
• A few seconds after the compressor starts, a clanging noise may be heard from
the inside of the outdoor unit. The noise is coming from the check valve due to the
small difference in pressure in the pipes. The unit is not faulty.
The test run operation mode cannot be changed by DIP switch SW4-2 during
the test run. (To change the test run operation mode during the test run, stop
the test run by DIP switch SW4-1. After changing the test run operation mode,
resume the test run by switch SW4-1.)
8.3. Self-check (Wired remote controller) (Fig. 8-2)
1
2
3
4
Turn on the power.
Press the [CHECK] button twice.
Set refrigerant address with [TEMP] button if system control is used.
Press the [ON/OFF] button to stop the self-check.
A
B
C
D
CHECK button
Refrigerant address
TEMP. button
IC: Indoor unit
OC: Outdoor unit
E Check code
F Unit address
• For description of each check code, refer to the following table.
1 Check code
P1
P2
P4
P5
P6
P8
P9
U0–UP
F1–FA
E0–E5
E6–EF
––
FFFF
Symptom
Intake sensor error
Pipe sensor error
Drain sensor error
Drain pump error
Freezing / Overheating safeguard operation
Pipe temperature error
TH5 sensor error
Outdoor unit error
Outdoor unit error
Signal error between remote controller and indoor units
Communication error between indoor and outdoor units
No alarm history
No unit
• On wired remote controller
1 Check code displayed in the LCD.
• If the unit cannot be operated properly after the above test run has been performed, refer to the following table to remove the cause.
Symptom
Wired remote controller
H0
For about 2
minutes following
power-on
H0 → Error code
After about 2
minutes has
expired following
Display messages do not apper even power-on
when operation switch is turned ON
(operation lamp does not light up).
Cause
LED 1, 2 (PCB in outdoor unit)
After LED 1, 2 are lighted, LED 2 is turned off,
then only LED 1 is lighted. (Correct operation)
• For about 2 minutes following power-on, operation of the
remote controller is not possible due to system start-up. (Correct operation)
Only LED 1 is lighted. → LED 1, 2 blink.
• Connector for the outdoor unit’s protection device is not connected.
• Reverse or open phase wiring for the outdoor unit’s power
terminal block
Only LED 1 is lighted. → LED 1 blinks twice,
LED 2 blinks once.
• Incorrect wiring between indoor and outdoor units (incorrect
polarity of S1, S2, S3)
• Remote controller wire short
Note:
Operation is not possible for about 30 seconds after cancellation of function selection. (Correct operation)
For description of each LED (LED1, 2, 3) provided on the indoor controller, refer to the following table.
LED1 (power for microcomputer)
Indicates whether control power is supplied. Make sure that this LED is always lit.
LED2 (power for remote controller)
Indicates whether power is supplied to the remote controller. This LED lights only in the case of the
indoor unit which is connected to the outdoor unit refrigerant address “0”.
LED3 (communication between indoor and outdoor units)
Indicates state of communication between the indoor and outdoor units. Make sure that this LED is
always blinking.
9
8.4. Check of drainage
• During the trial run, ensure the water is being properly drained out and that no
water is leaking from joints.
• Always check this during installation even if the unit is not required to provide
cooling/drying at that time.
9. System controll (Fig. 9-1)
A
B
C
D
E
F
G
Outdoor unit
Indoor unit
Master remote controller
Subordinate remote controller
Standard 1:1 (Refrigerant address = 00)
Simultaneous twin (Refrigerant address = 01)
Simultaneous triple (Refrigerant address = 02)
* Set the refrigerant address using the DIP switch of the outdoor unit.
1 Wiring from the Remote Control
This wire is connected to TB5 (terminal board for remote controller) of the indoor unit
(non-polar).
2 When a Different Refrigerant System Grouping is Used.
Up to 16 refrigerant systems can be controlled as one group using the slim MA
remote controller.
Note:
In single refrigerant system (twin/triple), there is no need of wiring 2.
SW1
Function table
Function
<SW1>
ON
OFF
1 2 3 4 5 6
SW1
function
settings
1 Compulsory deStart
Normal
frosting
Clear
Normal
2 Error history clear
3 Refrigerant sys- Settings for outdoor unit ad4 tem address set- dresses 0 to 15
5 ting
6
10
Operation according to switch setting
ON
OFF
— MEMO —
Please be sure to put the contact address/telephone number on
this manual before handing it to the customer.
HEAD OFFICE: MITSUBISHI DENKI BLDG., 2-2-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN
BG79S821H01