Page 1
AIR CONDITIONER (MULTI-SPLIT TYPE)
Installation Manual
Outdoor Unit
Model name:
RAS-5M34S3AV-E
RAS-4M27S3AV-E
RAS-3M26S3AV-E
* NOTE:
Descriptions about operations for the E unit in this manual are
not applicable to RAS-4M27S3AV-E.
Descriptions about operations for the D unit and the E unit in
this manual are not applicable to RAS-3M26S3AV-E.
Installation Manual
Outdoor Unit
English
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Outdoor Unit Installation Manual
Contents
1 Precautions for safety . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Installation / service tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
4 Optional parts, accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
5 Installation of outdoor unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
6 Refrigerant piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
7 Electrical work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
8 Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
9 Test run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Please read this Installation Manual carefully before installing the Air Conditioner.
• This Manual describes the installation method of the outdoor unit.
• For installation of the indoor unit, refer to the Installation Manual attached to the indoor unit.
IMPORTANT NOTICE
For details on how to install the indoor units, refer to the installation manual accompanying the indoor units.
1
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Outdoor Unit Installation Manual
1 Precautions for safety
The manufacturer shall not assume any liability for the damage caused by not observing the
description of this manual.
Be sure to read this installation manual carefully before installing.
The supplied CD-ROM contains the installation manual translated into many languages.
Recommend to the owner to perform maintenance periodically when using over long periods
of time.
This appliance can be used by children aged from 8 years and above and persons with
reduced physical, sensory or mental capabilities or lack of experience and knowledge if they
have been given supervision or instruction concerning use of the appliance in a safe way and
understand the hazards involved.
Children shall not play with the appliance. Cleaning and user maintenance shall not be made
by children without supervision.
Be sure to follow the precautions provided here to avoid safety risks. The symbols and their
meanings are shown below.
DANGER
WARNING
CAUTION
*1: A severe injury refers to blindness, injury, burns (hot or cold), electrical shock, bone
fracture, or poisoning that leaves after effects and requires hospitalization or extended
out-patient treatment.
*2: Personal injury means a slight accident, burn, or electrical shock which does not
require admission or repeated hospital treatment.
*3: Property damage means greater damage which affects assets or resources.
It indicates that incorrect use of this unit can result in a high possibility of
severe injury(*1) or death.
It indicates that incorrect use of this unit may cause severe injury or
death.
It indicates that incorrect use of this unit may cause personal injury(*2),
or property damage(*3).
For general public use
Power supply cord of parts of appliance for outdoor use shall be at least polychloroprene
sheathed flexible cord (design H07RN-F) or cord designation 60245 IEC66 (2.5 mm2 or
more). (Shall be installed in accordance with national wiring regulations.)
This appliance is not intended for use by person (including children) with reduced physical,
sensory or mental capabilities, or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the appliance by a person responsible for
their safety.
Children should be supervised to ensure that they do not play with the appliance.
2
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Outdoor Unit Installation Manual
CAUTION
New refrigerant air conditioner installation
THIS AIR CONDITIONER USES THE NEW HFC REFRIGERANT (R410A), WHICH DOES
NOT DESTROY THE OZONE LAYER.
R410A refrigerant is apt to be affected by impurities such as water, oxidizing membranes,
and oils because the pressure of R410A refrigerant is approx. 1.6 times of refrigerant R22.
As well as the adoption of this new refrigerant, refrigerating machine oil has also been
changed. Therefore, during installation work, be sure that water, dust, former refrigerant,
or refrigerating machine oil does not enter the refrigeration cycle of a new-refrigerant air
conditioner. To avoid mixing refrigerant and refrigerating machine oil, the sizes of charging
port connecting sections on the main unit are different from those for the conventional
refrigerant, and different size tools are also required. For connecting pipes, use new and
clean piping materials with high pressure withstand capabilities, designed for R410A only,
and ensure that water or dust does not enter. Moreover, do not use any existing piping as its
pressure withstand may be insufficient and may contain impurities.
DANGER
• The manufacturer shall not assume any liability for the damage caused by not observing
the description of this manual.
• For use by qualified persons only.
• Means for disconnection from the supply having a contact separation of at least 3 mm in
all poles must be incorporated in the fixed wiring.
• Turn off main power supply before attempting any electrical work. Make sure all power
switches are off. Failure to do so may cause electric shock.
• Connect the connecting cables correctly. If the connecting cables are connected wrongly,
electric parts may be damaged.
• Check the earth wire that it is not broken or disconnected before installation.
• Do not install near concentrations of combustible gas or gas vapors. Failure to follow this
instruction can result in fire or explosion.
• To prevent overheating the indoor unit and causing a fire hazard, place the unit well away
(more than 2 m) from heat sources such as radiators, heaters, furnace, stoves, etc.
• When moving the air conditioner for installing it in another place again, be very careful
not to get the specified refrigerant (R410A) with any other gaseous body into the
refrigeration cycle. If air or any other gas is mixed in the refrigerant, the gas pressure in
the refrigeration cycle becomes abnormally high and it resultantly causes burst of the pipe
and injuries on persons.
• In the event that the refrigerant gas leaks out of the pipe during the installation work,
immediately let fresh air into the room. If the refrigerant gas is heated by fire or something
else, It causes generation of poisonous gas.
• When installing or re-installing the air conditioner, do not inject air or other substances
besides the designated refrigerant “R410A” into the refrigerating cycle.
If air or other substances are mixed, an abnormal pressure can occur in the refrigerating
cycle, and this can cause an injury due to a pipe rupture.
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Outdoor Unit Installation Manual
WARNING
• Do not use any refrigerant different from the one specified for complement or replacement.
Otherwise, abnormally high pressure may be generated in the refrigeration cycle, which
may result in a failure or explosion of the product or an injury to your body.
• Installation work must be requested from the supplying retail dealership or professional
vendors. Self-installation may cause water leakage, electrical shock, or fire as a result of
improper installation.
• Specified tools and pipe parts for model R410A are required, and installation work must
be done in accordance with the manual. HFC type refrigerant R410A has 1.6 times more
pressure than that of conventional refrigerant (R22). Use the specified pipe parts, and
ensure correct installation, otherwise damage and/or injury may be caused. At the same
time, water leakage, electrical shock, and fire may occur.
• Be sure to install the unit in a place which can sufficiently bear its weight. If the load bearing
of the unit is not enough, or installation of the unit is improper, the unit may fall and result in
injury.
• Electrical work must be performed by a qualified electrical engineer in accordance with
the code governing such installation work, internal wiring regulations, and the manual. A
dedicated circuit and the rated voltage must be used. Insufficient power supply or improper
installation may cause electrical shock or fire.
• Use a cabtyre cable to connect wires in the indoor/outdoor units. Midway connection,
stranded wire, and single-wire connections are not allowed. Improper connection or fixing
may cause a fire.
• Wiring between the indoor unit and outdoor units must be well shaped so that the cover can
be firmly placed. Improper cover installation may cause increased heat, fire, or electrical
shock at the terminal area.
• Be sure to use only approved accessories or the specified parts. Failure to do so may
cause the unit to fall, water leakage, fire or electrical shock.
• After the installation work, ensure that there is no leakage of refrigerant gas. If the
refrigerant gas leaks out of the pipe into the room and is heated by fire or something else
from a fan heater, stove or gas range, it causes generation of poisonous gas.
• Make sure the equipment is properly earthed. Do not connect the earth wire to a gas pipe,
water pipe, lightning conductor, or telephone earth wire. Improper earth work may be the
cause of electrical shock.
• Do not install the unit where flammable gas may leak. If there is any gas leakage or
accumulation around the unit, it can cause a fire.
• Do not select a location for installation where there may be excessive water or humidity,
such as a bathroom. Deterioration of insulation may cause electrical shock or fire.
• Installation work must be performed following the instructions in this installation manual.
Improper installation may cause water leakage, electrical shock or fire. Check the following
items before operating the unit.
- Be sure that the pipe connection is well placed and there are no leaks.
- Check that the service valve is open. If the service valve is closed, it may cause
overpressure and result in compressor damage. At the same time, if there is a leak in the
connection part, it may cause air suction and overpressure, resulting in burst or injury.
• The following must be certainly done during pump down.
• Do not incorporate air into the refrigeration cycle.
• Close the 2 service valves. Stop the compressor and remove the refrigerant pipe.
If the refrigerant pipe is removed when the compressor is operating and service valves are
opened, the refrigerant cycle will inhale unwanted matter such as air and the pressure in the
cycle becomes abnormally elevated. It may cause a burst or injury.
• Do not modify the power cable, connect the cable midway, or use a multiple outlet
extension cable. Doing so may cause contact failure, insulation failure, or excess current,
resulting in fire or electrical shock.
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Outdoor Unit Installation Manual
WARNING
• If you detect any damage, do not install the unit. Contact your supplying dealer immediately.
• Never modify this unit by removing any of the safety guards or bypassing any of the safety
interlock switches.
• Do not wash air conditioners with pressure washers.
Electric leaks may cause electric shocks or fires.
• Be sure to comply with local regulations/codes when running the wire from the outdoor unit
to the indoor unit. (Size of wire and wiring method etc.)
• When installing the air conditioner in a small room, provide appropriate measures to
ensure that the concentration of refrigerant leakage occur in the room does not exceed the
critical level. It is not dangerous refrigerant; it has not toxicity or combustibility. However,
a concentration above 0.3 kg/m
refrigerant charged to the Multi System air conditioner is more than the volume charged to a
conventional individual system.
• Make sure drain hose insulation if cooling operation is used at sub-zero ambient
temperature.
3
as criterion still causes suffocation. The volume of
CAUTION
• Please read this installation manual carefully before installing the unit. It contains further
important instructions for proper installation.
• Exposure of unit to water or other moisture before installation could result in electric
shock. Do not store it in a wet basement or expose to rain or water.
• After unpacking the unit, examine it carefully for possible damage.
• Do not install in a place that can increase the vibration of the unit. Do not install in a place
that can amplify the noise level of the unit or where noise and discharged air might disturb
neighbours.
• This appliance must be connected to the main power supply by means of a circuit breaker
depending on the place where the unit is installed. Failure to do so may cause electrical
shock.
• Follow the instructions in this installation manual to arrange the drain pipe for proper
drainage from the unit. Ensure that drained water is discharged. Improper drainage can
result in water leakage, causing water damage to furniture.
• Tighten the flare nut with a torque wrench using the prescribed method. Do not apply
excess torque. Otherwise, the nut may crack after a long period of usage and it may
cause the leakage of refrigerant.
• Wear gloves (heavy gloves such as cotton gloves) for installation work. Failure to do so
may cause personal injury when handling parts with sharp edges.
• Do not touch the air intake section or the aluminium fins of the outdoor unit. It may cause
injury.
• Do not install the outdoor unit in a place which can be a nest for small animals. Small
animals could enter and contact internal electrical parts, causing a failure or fire.
• Request the user to keep the place around the unit tidy and clean.
• Make sure to conduct a test run after the installation work, and explain how to use and
maintain the unit to the customer in accordance with the manual. Ask the customer to
keep the operation manual along with the installation manual.
• Do not climb onto or place objects on top of the outdoor unit. You may fall or the objects
may fall off of the outdoor unit and result in injury.
Requirement of report to the local power supplier
Please make absolutely sure that the installation of this appliance is reported to the local
power supplier before installation. If you experience any problems or if the installation is not
accepted by the supplier, the service agency will take adequate countermeasures.
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Outdoor Unit Installation Manual
2 Installation / service tools
Changes in the product and components
In air conditioners using R410A, in order to prevent any other refrigerant from being accidentally charged, the service port diameter size of the outdoor unit
service valve has been changed. (1/2 UNF 20 threads per inch)
• In order to increase the pressure resisting strength of the refrigerant piping, fl are processing diameter and opposing fl are nuts sizes have been changed. (for
copper pipes with nominal dimensions 1/2 and 5/8)
Gauge manifold for R410A Phillips screwdriver Pipe cutter Flare tool for R410A
Charge hose for R410A Level Torque wrench 4 mm hexagonal wrench
Vacuum pump for R410A Scale Wrench (or spanner)
Gas leakage detector for R410A Utility knife Reamer
3 Specifi cations
RAS-5M34S3AV-E RAS-4M27S3AV-E RAS-3M26S3AV-E
Cooling operation –10 to 46 °C
*1
Operating conditions
Dimension
Net weight 78 kg 72 kg
Refrigerant R410A 2.99 kg 2.4 kg
Power supply 1 ph, 50 Hz, 220-240 V 1 ph, 60 Hz, 220 V
Maximum running current 19.5 A 16.4 A 16.1 A
Installation fuse rating 20 A breaker or fuse (all types can be used)
Power cord (H07RN-F or 60245IEC66) 3-core 2.5 mm
Connecting cable (H07RN-F or 60245IEC66) 4-core 1.0 mm2 or more
Pipe length
Refrigerant adjustment 20 g/m (41 m-80 m) 20 g/m (41 m-70 m)
The specifications for performance of this air conditioner differs depending on the combination of the indoor units which are operated.
The information in this specifications table applies for the combinations with the catalogue.
For operation, read the owner’s manual packed with the indoor unit.
Equipment complying with IEC 61000-3-12.
*1 If the air conditioner is used in conditions other than the above, the safety protection functions may be activated.
Dry operation –10 to 46 °C
Heating operation –15 to 24 °C
Height 890 mm
Width 900 mm
Depth 320 mm
2
Minimum for 1 unit 3 m
Maximum for 1 unit 25 m
Maximum for total unit 80 m 70 m
Height difference 15 m
No additional refrigerant charge 40 m
* Example of indoor unit class: RAS-B10UFV-E1 is abbreviated as “10”.
Indoor unit class Standard connecting pipe diameter
E 07 or 10 or 13 6.35, 9.52 mm
D 07 or 10 or 13 6.35, 9.52 mm
C 07 or 10 or 13 or 16
B07
A07
Total
*3
or 10*3 or 13*3 or 16 or 18 or 22 or 24 6.35, 12.7 mm
*3
or 10*3 or 13*3 or 16 or 18 or 22 or 24 6.35, 12.7 mm
68 (RAS-5M34S3AV-E )
54 (RAS-4M27S3AV-E )
54 (RAS-3M26S3AV-E)
*2
6.35, 9.52 mm
—
4 Optional parts, accessories
Optional parts
Parts name Specifications Q’ty
Indoor unit
(abbreviation)
Refrigerant piping
Putty, PVC tapes 1 ea.
*4
07, 10, 13 6.35 mm 9.52 mm
16, 18, 22, 24 6.35 mm 12.7 mm
Accessories
Installation
manual
15111
Rubber cap
(Water-proof)
Liquid side
(O.D.)
Gas side (O.D.)
CD-ROM
(Installation
manual)
1 ea.
All combinations that do not exceed the “Total” number can
be installed.
More than 2 indoor units must be connected to an outdoor
unit.
When 2 indoor units are connected to an outdoor unit, note
that some combinations of indoor units are not compatible.
For the further details, refer to the catalogue.
*2 Need the reducer (12.7 to 9.52 mm).
*3 Need the expander (9.52 to 12.7 mm).
• Locally procured.
*4 Refrigerant piping covered with insulating material (Polyethylene
form, 6 mm thick) When duct-type or cassette-type unit is to be
installed, it shall be covered with thicker insulating material
(Polyethylene form, 10 mm thick)
F-GAS label Drain nipple
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Outdoor Unit Installation Manual
5 Installation of outdoor unit
■ Installation Location
• A place which can bear the weight of the outdoor unit and does not cause
an increase in noise level and vibration.
• A place where the operation noise and air discharge do not disturb
neighbours.
• A place which is not exposed to strong wind.
• A place free of combustible gas.
• A place which does not block a passageway.
• A place where the drain water does not cause any problems.
• A place where there are no obstructions near its air intake or air discharge.
Installation in the following places may result in trouble:
• A place with a lot of machine oil.
• A place with saline-rich atmosphere such as a coastal area.
• A place with high level of sulfi de gas.
• A place where high-frequency waves are likely to be generated, such as
from audio equipment, welders, or medical equipment.
Do not install the unit in such places.
■ Precautions for Installation
• When the outdoor unit is to be installed in an elevated position, be sure to
secure its feet.
• If the outdoor unit is to be mounted on a wall, make sure the base plate
supporting it is sturdy enough.
• The base plate should be designed and manufactured to maintain its
strength over a long period of time, and suffi cient consideration should be
given to ensure that the outdoor unit will not fall.
• When the outdoor unit is installed in a place that is always exposed to
strong wind such as a coastal area or on a high story of a building, secure
the normal fan operation using a duct or a wind shield.
• Especially in windy areas, install the unit in such a way as to prevent the
admission of wind.
• When the outdoor unit is to be mounted high on a wall, take particular care
to ensure that parts do not fall, and that the installer is protected.
• When doing installation work at ground level, it is usual to make wiring and
pipe connections to the indoor units fi rst, and then to make connections to
the outdoor units.
However, if outdoor work is diffi cult, you can change the procedure.
For example, by making adjustments to the wiring and piping lengths on
the inside (rather than the outside).
• When using an air conditioner under low outside temperature conditions
(Outside temp: -5 °C or lower) In COOL mode, prepare a duct or wind
shield so that it is not affected by the wind.
Necessary Space for Installation
If you need to install the outdoor unit in a location where there are some
obstructions or a wall, secure sufficient space as shown in the figure below.
The cooling/heating effect may be reduced by 10%.
Upper side view (Unit: mm)
Draining Off the Water from the Outdoor Unit
Install 5 waterproof rubber caps and the drain nipple to drain off the
water from the outdoor unit.
• Seal the knock-out holes and screw/thread areas tightly using a silicon
adhesive or a caulking compound.
• Use a drain pan to apply a centralized drain.
Water-proofing rubber cap
Drain nipple
Installation in Regions with Snowfall and Cold Temperatures
Do not use waterproof rubber caps or a drain nipple.
• If you need to install the outdoor unit in a location where there is a
possibility of the drain freezing, pay close attention so that the drain does
not become frozen.
• To protect the outdoor unit from snow, install the outdoor unit on a holding
frame, and attach a snow protection hood and plate.
• Keep the outdoor unit at least 500 mm above the snow accumulation line.
Snow protection plate
Front
Anchor bolts
Snow protection hood
At least 500 mm
Snow accumulation line
Holding frame
Fixing the Outdoor Unit
Fix the outdoor unit using attachment bolts.
• Use 8 mm or 10 mm anchor bolts and nuts.
• Do not allow the attachment bolts to protrude by more than 15 mm.
• Install the outdoor unit at ground level.
• Attach the vibration-proof rubber pads under the fi xing legs.
400
365
150
Drain hole
525
600
45
150
15 mm or
less
Side view (Unit: mm)
150 or
more
500 or more
150 or more
150 or more
500 or more
200 or more
1000 or more
300 or more
1000 or more
150 or more
1000 or
more
Drain nipple mounting hole
GOOD BAD
Absorb vibration
with vibration-proof
rubber pads
Mounting leg
Foundation
Bottom plate of
outdoor unit
Foundation
Support the bottom surface of the
mounting leg that is in contact with
and underneath the bottom plate of
the outdoor unit.
7
Drain hole
If only the end
of the
mounting leg
is supported,
it may
deform.
Foundation
Do not support
the outdoor unit
only with the
mounting leg.
Page 9
Outdoor Unit Installation Manual
6 Refrigerant piping
CAUTION
3
Install in rooms that are 13 m
or larger. If
a leak of refrigerant gas occurs inside the
room, an oxygen defi ciency may occur.
■ Detaching the Front Panel
Remove the 5 screws.
• Pull out the front panel according to the direction of the arrows on the
illustration below.
■ Refrigerant Piping Connection
Flaring
1. Cut the pipe with a pipe cutter.
■ Air Purge
From the sake of environmental protection, use a vacuum pump to extract
the air during installation.
* Prepare a 4 mm hexagon wrench.
1. Connect a charge hose.
•
Make sure that the Handle Hi of the gauge manifold valve is closed fully.
•
Connect the port of the gauge manifold valve and the service port (Valve
core (Setting Pin)) using the charge hose.
NOTE
If a control valve or charge valve is attached to the charge hose, leak
of R410A refrigerant can be avoided.
2. Open the Handle Low of the gauge manifold valve fully, then operate the
vacuum pump.
oosen the fl are nut of the at the gas end a little to make sure that air is
• L
taken in, then tighten the nut.
•
If you fi nd air is not taken in, make sure that the charge hose is
connected to the port(s) securely.
•
Perform extraction for about 40 minutes and make sure that the
compound pressure gauge reading is –101 kPa (–76 cmHg).
•
If the compound pressure gauge reading is not –101 kPa (–76 cmHg),
there is a possibility air is being taken in from the port(s).
• Make sure that the charge hose is connected to the port(s) securely.
3. Close the Handle Low of the gauge manifold valve fully, then stop
operating the vacuum pump.
• Lea
ve the gauge and pump as they are for 1 or 2 minutes, then make
sure that the compound pressure gauge reading stays at –101 kPa
(–76 cmHg).
•
You need not add refrigerant if the piping length is 40 m or less.
If the le
4. Disconnect the charge hose from the service port, then open the valve
stem fully using a 4 mm hexagon wrench.
ngth exceeds 41 m, add 20 g of refrigerant per 1meter over.
Hexagon wrench is
required.
Service port cap
4 mm
Roughness
Width
across
flat
9.1 17
13.2 22
16.6 26
Warp
B
Tighten
torque
14 to 181.4 to
1.8
33 to 423.3 to
4.2
50 to 625.0 to
6.2
Pipe
tool
Obliquity
A
Imperial
(wing
nut type)
R410A
tool
1.5 to
2.0
1.5 to
2.0
2.0 to
2.5
90°
2. Remove the burr inside of the pipe.
When removing the burr, be careful so that chips do not fall into the pipe.
3. Remove the fl are nuts attached to the outdoor/indoor unit, then insert them
into each of the pipes.
4. Flare the pipes.
See the following table for the projection margin (A) and fl aring size (B).
Die
Pipe A B Flare Nut
Rigid
Outside
diameter
Thickness
mm mm mm mm mm mm N•m kgf•m
6.35 0.8 0 to 0.5
9.52 0.8 0 to 0.5
12.7 0.8 0 to 0.5
(clutch
type)
R410A
Pipe connection
1. Make wire and pipe connections for each indoor unit separately.
2. Align the centres of the connecting pipes and tighten the fl are nut as much
as possible with your fi ngers, then tighten the nut using a torque wrench.
Be sure to tighten the nut at the specifi ed torque value.
• If you use one outdoor unit for several indoor units of a different class,
connect the largest one fi rst A, then connect the rest in the order B to E.
• Do not remove the fl are nuts for any ports you are not going to use for
connection.
• Do not leave the fl are nut unattached for a long period of time.
• Use a different-diameter joint if the diameters of the connection port and
connection piping are different.
• Mount the different-diameter joint on the connection port of the outdoor
unit.
Valve stem cap
5. Tighten the service valve stem cap and service port cap securely.
CAUTION
Use a torque wrench and tighten the nut at
the specifi ed torque value.
6. Tighten all the caps on the valves securely, then perform a gas leak
inspection.
• The cap with the 9.52 mm outer diameter is available in two sizes in
accordance with the type of packed valve for which the cap is used.
The tightening torque depends on the width across fl ats of the cap so
check it in the table below.
Service valve
mm N•m kgf•m N•m kgf•m
Liquid side
(9.52)
Compound pressure gauge
(Valve core (Setting pin))
H19 mm 14 to 18 1.4 to 1.8
H22 mm 33 to 42 3.3 to 4.2
Gas side (12.7) 33 to 42 3.3 to 4.2 14 to 18 1.4 to 1.8
–101 kPa (–76 cmHg)
Service valve at the gas
Handle Low
Charge hose
(For R410A only)
Service port
Valve stem cap Service port cap
side
Tighten torque
Pressure gauge
Manifold valve
Handle Hi
(Keep full closed)
Charge hose
(For R410A only)
Service valve at
the liquid side
——
Vacuum pump adapter
for counter-flow
prevention
(For R410A only)
Vacuum pump
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Page 10
Outdoor Unit Installation Manual
■ Charging Refrigerant
• You need not add refrigerant if the piping length is 40 m or less.
• If the length exceeds 41 m, add 20 g of refrigerant per 1 meter over.
Procedure to Charge Refrigerant
After extraction is complete, close the valves, then charge the refrigerant.
• Make sure that no operations are in progress while charging the
refrigerant.
If you cannot charge the refrigerant fully, add it from the service port of
the service valve at the gas end while cooling operation is in progress.
NOTE
• Charge the refrigerant in a liquid state.
• If you charge the refrigerant in a gas state, the air conditioner will
not operate properly since the refrigerant undergoes a change in its
composition.
Precautions for Adding Refrigerant
• Use a scale with a precision of at least 10 g per index line when adding
the refrigerant.
Do not use bathroom scales or similar instruments.
• Use liquid refrigerant when refi lling.
Since the refrigerant is in liquid form, it can fi ll up quickly.
Therefore add the refrigerant gradually.
CAUTION
This product contains fluorinated
greenhouse gases covered by the Kyoto
Protocol.
• Chemical Name of Gas: R410A
• Global Warming Potential (GWP) of gas:
2088
R410A
kg
kg
kg
Periodical inspections for refrigerant leaks
may be required depending on European or
local legislation.
■ Insulation of the Refrigerant Pipes
• Insulate the refrigerant pipes for liquid and gas separately.
Heat-proof bubble polyethylene
■ Gas Leak Inspection
• Perform a gas leak inspection for the fl are nut connections, valve stem
connection, and service port cap without fail.
• Use a leak detector exclusively manufactured for R410A.
1
Pre-charged Refrigerant
at Factory [kg], specified
in the nameplate
2
Additional Charge on
Installation 2 Site [kg]
Underground piping: 10t
(Laying the pipes on the wall,
ceiling, or under the floor)
1. Stick the enclose refrigerant label adjacent
to the charging and/or recovering location.
2. Clearly write the charge refrigerant quantity
on the refrigerant label using indelible ink.
3. Prevent emission of the contained
fl uorinated greenhouse gas.
Ensure that the fl uorinated greenhouse gas
is never vented into the atmosphere during
installation, service or disposal.
If any leakage of the contained fl uorinated
greenhouse gas is detected, the leak
must be stopped and repaired as soon as
possible.
4. Only qualifi ed service personnel are
allowed to access and service this product.
5. Any handling of the fl uorinated greenhouse
gas in the product, such as when moving
the product or recharging the gas, must
comply with (EC)
Regulation No.842/2006 on certain
fl uorinated greenhouse gases and any
relevant local legislation.
6. Contact dealers, installers, etc., for any
questions.
Flare nut connections
(Indoor unit)
Service port cap
connection
Valve stem cap
connection
Flare nut connections
(Outdoor unit)
* Check point example (RAS-5M34S3AV-E)
■ Performing Additional Installation of an Indoor Unit
1. Collect refrigerant from the outdoor unit.
2. Turn off the circuit breaker.
3. Perform additional installation referring to the procedure from “Refrigerant
Piping Connection” on the previous page.
9
Page 11
Outdoor Unit Installation Manual
■ Pump-down Operation (Recovering refrigerant)
CAUTION
Since the forcible running for collecting
refrigerant stops automatically after 10
minutes, fi nish collecting refrigerant within
10 minutes.
Electric current is applied on the
control board. Beware of electric
shock.
• The following must be certainly done
during pump down.
• Do not incorporate air into the
refrigeration cycle.
• Close the 2 service valves. Stop the
compressor and remove the refrigerant
pipe.
If the refrigerant pipe is removed when
the compressor is operating and service
valves are opened, the refrigerant cycle
will inhale unwanted matter such as air
and the pressure in the cycle becomes
abnormally elevated. It may cause a
burst or injury.
1. Detach the front panel.
Do not remove the air discharge grille.
2. Turn on the power.
3. Start running all the indoor units connected to the outside unit in the
cooling mode.
4. Press the SW800 button on the P.C board MCC 5071 for 10 to 60
seconds to start the indoor unit(s) in the cooling mode forcibly.
•
When the status of each LED changes to that shown on the “While holding
a button (10 to 60 seconds)” row on the table below, release the button.
The status of each LED on the P.C board MCC 5071 changes.
LED
D800
D801
D802
D803
D804
D805
7 Electrical work
WARNING
• Be sure to comply with local regulations/
codes when running the wire from the
outdoor unit to the indoor unit.
(Size of wire and wiring method etc.)
• A lack of electrical capacitance or incorrect
wiring may cause an electric shock or a
fi re.
• To make sure that the wiring connection
are secure, use designated cables.
• Fix the cables securely so that no external
force applied to the cables may effect the
terminals.
• If wiring connections are incomplete or
cables are not fi xed securely, it may cause
a fi re.
• Be sure to ground the outdoor unit.
• Incomplete grounding may lead to an
electric shock.
CAUTION
• Use a circuit breaker of a type that is not
tripped by shock waves.
• Incorrect/incomplete wiring will cause
electrical fi res or smoke.
• Prepare the power source for exclusive
use with the air conditioner.
• This product can be connected to the main
power.
Fixed wire connections:
A switch that disconnects all poles and
has a contact separation of at least 3 mm
must be incorporated into the fi xed wiring.
SW800
: LED ON, : LED OFF, : LED Flash
LED
D800 D801 D802 D803 D804 D805
Normal operation
While holding a button
(0 to 10 seconds)
While holding a button
(10 to 60 seconds)
Release a button
5. Close the valve stem of the service valve at the liquid end.
6. Make sure that the compound pressure gauge reading is –101 kPa
(–76 cmHg).
7. Close the valve stem of the service valve at the gas end.
8. Stop running all the indoor units.
10
Page 12
Outdoor Unit Installation Manual
■ Wire Connection
• The dash lines show on-site wiring.
(Main circuit)
Input power
L
N
Leakage
breaker
Earth
• Connect the indoor/outdoor connecting cables to the identical terminal
numbers on the terminal block of each unit.
• Incorrect connection may cause a failure.
1. Detach the front panel from the outdoor unit.
2. Remove the cord clamp.
3. Connect the wires for the power source and each indoor unit.
•
Connect the connecting cable to the terminal as identifi ed by the matching
numbers on the terminal block of the indoor and the outdoor unit.
4. Fix the wiring connections for the power source and each indoor unit
securely using a cord clamp.
5. Attach the front panel to the outdoor unit.
Stripping Length of connecting cable for outdoor unit
(System
interconnection wires)
1
2
3
1
2
3
Indoor unit
Remote
controller
Screw
Connecting cable (C unit)
Connecting cable (D unit)
* Connecting example (RAS-5M34S3AV-E)
Connecting cable (E unit)
8 Grounding
This air conditioner must be grounded without fail.
• Grounding is necessary not only to safeguard against the possibility
of receiving an electric shock but also to absorb both static, which is
generated by high frequencies and held in the surface of the outdoor unit,
and noise since the air conditioner incorporates a frequency conversion
device (called an inverter) in the outdoor unit.
• If the air conditioner is not grounded, users may receive an electric shock
if they touch the surface of the outdoor unit and that unit is charged with
static.
3
12
10
Connecting cable
10
N
10
40
Earth wire
L
10
30
Power cord
Terminal block (Connecting cable)
Earth wire
30
40
Connecting cable (A unit)
Screw
Power cord
Connecting cable (B unit)
11
Page 13
Outdoor Unit Installation Manual
9 Test run
■ Wiring/Piping Check
CAUTION
Electric current is applied on the
control board. Beware of electric
shock.
1. Detach the front panel of the outdoor unit.
Do not remove the air discharge grille.
2. Turn on the circuit breaker to supply electricity.
3. Start running all the indoor units connected to the outside unit in the
cooling mode.
• You need not specify the temperature setting of the indoor units.
• You cannot check wiring/piping when the external temperature is 5°C
or less.
4. Turn on the SW802 No.4 switch on the P.C board MCC 5071.
The wiring/piping check starts automatically.
While checking, each LED fl ashes consecutively to indicate that the
checking each indoor unit is in progress.
When checking is complete, the check result is displayed on the LED panel.
See the table below for details.
4-1. If no problems are detected, The checking operation returns to the
normal operation automatically.
The compressor stops temporarily, then it restarts.
The D801 LED fl ashes while the compressor is stopped.
4-2. If incorrect wiring/piping is detected, The checking operation stops.
Check the status of the LED to confi rm the details of the problem.
Turn off the circuit breaker, then check wiring/piping again.
5. Turn off the SW802 No.4 switch on the P.C board MCC 5071.
• The checking operation changes to the normal operation.
6. LED does not light if the corresponding indoor unit is not connected.
SW802
<Normal>
LED
D800 D801 D802 D803 D804 D805
Check
results
: LED ON, : LED OFF, : LED Flash
Description
Normal operation (no error)
Trouble in unit A
Trouble in unit B
Trouble in unit C
Trouble in unit D
Trouble in unit E
Trouble in units A and B
Trouble in units A and C
Trouble in units A and D
Trouble in units A and E
Trouble in units B and C
Trouble in units B and D
Trouble in units B and E
Trouble in units C and D
Trouble in units C and E
Trouble in units D and E
Trouble in units A, B, and C
Trouble in units A, B, and D
Trouble in units A, B, and E
Trouble in units A, C, and D
Trouble in units A, C, and E
Trouble in units A, D, and E
Trouble in units B, C, and D
Trouble in units B, C, and E
Trouble in units B, D, and E
Trouble in units C, D, and E
Trouble in units A, B, C, and D
Trouble in units A, B, C, and E
Trouble in units A, B, D, and E
Trouble in units A, C, D, and E
Trouble in units B, C, D, and E
“Trouble in all units
Service valve stays closed”
■ Gas Leak Inspection
Refer to the “ Gas Leak Inspection” on page 9.
<Check>
LED
D800 D801 D802 D803 D804 D805
Before
check
During
check
• The D801 LED represents A unit.
• The D802 LED represents B unit.
• The D803 LED represents C unit.
• The D804 LED represents D unit.
• The D805 LED represents E unit.
: LED ON, : LED OFF, : LED Flash
Description
Normal operation (no error)
Checking A unit
Checking B unit
Checking C unit
Checking D unit
Checking E unit
■ Test run
1. If you perform the test run in summer, start running in the cooling mode fi rst
to decrease the temperature of the room, then run in the heating mode.
(Heating mode: Set the temperature to 30°C.)
• If you perform the test run in winter, start running in the heating mode fi rst
to increase the temperature of the room, then run in the cooling mode.
(Cooling mode: Set the temperature to 17°C.)
2. For the test run, be sure to satisfy the following conditions below:
- Perform the test run for each indoor unit respectively.
- Perform the test run for about 10 minutes in both the cooling mode and
the heating mode.
• You can perform the test run in the cooling/heating mode by utilizing the
thermo sensor of the indoor unit.
Cooling mode: Warm the thermo sensor using an appliance such as a
hair dryer.
Heating mode: Put a cold towel on the thermo sensor.
■ Instructions for the Customers
•
Explain to the customers the proper operation procedure and let them
operate the air conditioner along with the supplied instruction manual.
•
When multiple indoor units are connected to the outdoor unit, the cooling
mode and the heating mode are not available at the same time.
When multiple indoor units are running at the same time, the operation mode
of the unit which starts running fi rst is applied to the other units.
•
When you start running the indoor unit or change the operation mode, the
unit starts running after 3 minutes. This is due to the protection function of
the unit, not a malfunction.
•
When the external temperature becomes low, the pre-heating of the
compressor starts to protect it. Keep the circuit breaker on for use.
The electricity consumption during pre-heating is about 100 W.
If the circuit breaker is turned off, the indoor unit may not start running for
about 11 minutes.
•
Electronic expansion valves are used for the outdoor unit.
When you turn on the power, the outdoor unit starts clattering every 1 or
2 months. This clattering is not a malfunction, but occurs when the unit is
returning to the default setting for optimised control.
•
While an indoor unit is running in the heating mode, the outdoor unit supplies
refrigerant to the other indoor units which are not running.
Therefore, noise may come from the other indoor units or the exterior of
them may become warm.
12
Page 14
144 / 9 Moo 5, Bangkadi Industrial Park, Tivanon Road, Tambol Bangkadi, Amphur Muang, Pathumthani 12000, Thailand
1116791099
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