TOSHIBA RAV-HM301MUTP-E Air Conditioning Instruction Manual

TOSHIBA RAV-HM301MUTP-E Air Conditioning

Product Specifications

• Model: Compact 4-Way Cassette Type
• Model Variants: RAV-HM301MUTP-E, RAV-HM401MUTP-E, RAV-HM561MUTP-E
• For: Commercial Use
• Refrigerant: R32
• Language: English
• Installation Manual Access: QR CODE provided for online access
• Available Manuals in Multiple Languages

Product Usage Instructions

Accessory Parts
The following accessory parts are included for installation:

• Heat insulating pipe (2)
• Installation pattern (1)
• Installation gauge washer (4)
• Eccentric washer (4)
• Hose band (1)
• Flexible hose (1)
• Heat insulator (1)
• Safety Manual (1)

Selection of Installation Place

WARNING: Install the air conditioner in a place that satisfies the following conditions:

• Avoid installing in areas that may obstruct airflow or cause damage to resin parts.
• Avoid areas with high humidity without proper insulation.
• Avoid direct sunlight exposure to ensure proper remote controller functionality.

Installation Space Requirements
Ensure there is sufficient space for installation and maintenance:

• Keep at least 15mm clearance between the indoor unit’s top plate and the ceiling surface.
• Check port requirements for installation height adjustment.

Ceiling Height Guidelines
Installable ceiling height based on model:

• RAV-HM30 type: Up to 2.7m
• RAV-HM40, 56 type: Up to 3.5m

Note: Adjust setup values for high ceilings to ensure proper air distribution.

Frequently Asked Questions (FAQ)

• Q: How can I access the installation and owner’s manual?
  A: You can scan the QR code provided in the manual or visit the website mentioned to access the manuals in various languages.

• Q: What should I do if the air conditioner is installed in a high humidity area?
  A: Attach a heat insulator to the side (top) surface of the indoor unit if humidity exceeds 80% inside the ceiling.

AIR CONDITIONER (MULTI TYPE)
Installation Manual

Indoor Unit
Model name:
Compact 4-Way Cassette Type
RAV-HM301MUTP-E RAV-HM401MUTP-E RAV-HM561MUTP-E

Scan QR CODE to access installation and owner’s manual on website. https://www.toshiba-carrier.co.th/manuals/default.aspx
Manual are available in AR/BG/CZ/DA/DE/EL/EN/ES/ET/FI/FR/ HR/HU/IT/LT/LV/NL/NO/PL/PT/RO/RU/SK/SL/SV/TR.

Original instruction

Please read this Installation Manual carefully before installing the Air Conditioner.

• This Manual describes the installation method of the indoor unit.
• For installation of the outdoor unit, follow the Installation Manual attached to the outdoor unit.

Accessory parts

Accessory parts

Separate sold parts

• The Ceiling panel and remote controller are sold separately. For the installation of these products, follow the Installation Manuals supplied with them.
• The wireless type remote controller is designed to be installed by attaching a wireless remote controller kit
  (sold separately) to the standard panel. (The wireless remote controller kit consists of a wireless remote controller and adjust corner caps with a receiver section.)

Selection of installation place

WARNING

• Install the air conditioner at enough strong place to withstand the weight of the unit.
• If the strength is not enough, the unit may fall down resulting in injury.
• Install the air conditioner at a height 2.5 m or more from the floor.
• If you insert your hands or others directly into the unit while the air conditioner operates, it is dangerous because you may contact with revolving fan or active electricity.

CAUTION

• Do not install in a location where flammable gas may leaks are possible.
• If the gas leak and accumulate around the unit, it may ignite and cause a fire.
• When an outdoor unit using R32 refrigerant is combined with indoor unit, be attention to the floor area in the room to be installed.
• Indoor units cannot be installed in rooms with a floor area less than the minimum floor area. For details, follow the Installation Manual to the outdoor unit.

Upon approval of the customer, install the air conditioner in a place that satisfies the following conditions

• Place where the unit can be installed horizontally.
• Place where a sufficient servicing space can be ensured for safety maintenance and check.
• Place where drained water will not cause any problem.

Avoid installing in the following places

• Place exposed to air with high salt content (seaside area), or place exposed to large quantities of sulfide gas (hot spring).
  (Should the unit be used in these places, special protective measures are needed.)

• A restaurant kitchen where a lot of oil is used or place near machines in a factory (Oil adhering to the heat exchanger and resin part (turbo fan) in the indoor unit may reduce the performance, generate mist or dew drop, or deform or damage resin parts.)

• Places where iron or other metal dust is present. If iron or other metal dust adheres to or collects on the interior of the air conditioner, it may spontaneously combust and start a fire.

• Place where organic solvent is used nearby.

• Place close to a machine generating high frequency.

• Place where the discharged air blows directly into the window of the neighbor house. (Outdoor unit)

• Place where noise of the outdoor unit is easily transmitted. (When install the outdoor unit on the boundary with the neighbor, pay due attention to the level of noise.)

• Place with poor ventilation. (Before air ducting work, check whether value of air volume, static pressure and duct resistance are correct.)

• Do not use the air conditioner for special purposes such as preserving food, precision instruments, or art objects, or where breeding animals or growing plants are kept. (This may degrade the quality of preserved materials.)

• Place where any of high-frequency appliances (including inverter devices, private power generators, medical equipment, and communication equipment) and inverter-type fluorescent light is installed.
  (A malfunction of the air conditioner, abnormal control, or problems due to noise to such appliances / equipment may occur.)

• When the wireless remote controller is used in a room equipped with an inverter-type fluorescent light or at a place exposed to direct sunlight, signals from the remote controller may not be received correctly.

• Place where organic solvent is used.

• Place near a door or window exposed to humid outside air (Dew dropping may form.).

• Place where special spray is used frequently.

Installation space

Ensure there is sufficient space to install the unit and to perform maintenance work as and when required. Keep 15 mm or more for clearance between top plate of the indoor unit and the ceiling surface.

REQUIREMENT

1. Set a service check opening panel at electrical control box side of the unit (size: 450 × 450 mm or more) for piping, maintenance, and servicing.
2. For the adjustment of the installation height of the indoor unit.

Selection of installation place

In case of continued operation of the indoor unit under high-humidity conditions as described below, dew may condense and water may drop.
Especially, high-humidity atmosphere (dew point temperature : 23 °C or more) may generate dew inside the ceiling.

1. Unit is installed inside the ceiling with slated roof.
2. Unit is installed at a location using inside of the ceiling as fresh air take-in path.
3. Kitchen

REQUIREMENT
When the humidity inside the ceiling seems to be higher than 80%, attach a heat insulator to the side (top) surface of the indoor unit. (Use a heat insulator that is 10 mm or more thick.)

Ceiling height

When the height of the ceiling exceeds the distance of the item Standard / 4-way in below table, the warm air is difficult to reach the floor.
It is necessary to change the setup value of the high ceiling setting or discharge direction.

Height list of ceiling possible to be installed

Indoor unit Capacity type| HM30 type| HM40 type| HM56 type| Setup of high ceiling
---|---|---|---|---
Discharge direction| 4-way| 4-way| 4-way| Set data
Standard (Factory default)| 2.7| 2.9| 3.2| 0000
High ceiling (1)| —| 3.2| 3.4| 0001
High ceiling (3)| —| 3.5| 3.5| 0003

REQUIREMENT
When high ceiling (1) or (3) is used with 4-way blowing, a draft is easily recognized due to drop of discharge temperature.

The lighting time of the filter sign (notification of filter cleaning) on the remote controller can be changed according to installation conditions.
When it is difficult to obtain satisfactory heating due to location place of the indoor unit or the structure of the room, the detection temperature of heating can be raised.
Refer to “7. Applicable controls” in this manual for the setting procedure.

Installation

REQUIREMENT
Strictly comply with the following rules to prevent damage of the indoor units and human injury.

• Do not put a heavy article on the indoor unit. (Even units are packaged)
• Carry in the indoor unit as it is packaged if possible. If carrying in the indoor unit unpacked by necessity, be sure to use buffering cloth, etc. to not damage the unit.
• To move the indoor unit, hold the hooking metals (4 positions) only.
• Do not apply force to the other parts (refrigerant pipe, drain pan, foamed parts, or resin parts, etc.).
• Carry the package by two or more persons, and do not bundle it with plastic band at positions other than specified.

External view
(Unit:mm)

Opening a ceiling and installation of hanging bolts

• Consider the piping / wiring after the unit is hung when determining the location of the indoor unit installation and orientation.
• After the location of the indoor unit installation has been determined, open the ceiling and install hanging bolts.
• The dimensions of the ceiling opening and hanging bolt pitches are given in the outline drawing and the attached installation pattern.
• When a ceiling already exists, lay the drain pipe, refrigerant pipe, indoor unit / outdoor unit connection wires, and remote controller wires to their connection locations before hanging the indoor unit.

Procure hanging bolts and nuts for installing the indoor unit (these are not supplied).

Using the installation pattern (accessory)

The installation pattern is provided inside the packaging cap.

< For existing ceiling>
Use the installation pattern positioning a ceiling opening and hanging bolts.

< For new ceiling>
Use the installation pattern to position the ceiling opening when hanging a ceiling.

• After the hanging bolts have been installed, install the indoor unit.
• Hook the four holes in the installation pattern to the panel fixing screws of the indoor unit.
• When hanging a ceiling, open the ceiling along the outside dimensions of the installation pattern.

Treatment of ceiling
The ceiling differs according to structure of building. For details, consult your constructor or interior finish contractor.
In the process after the ceiling board has been removed, it is important to reinforce ceiling foundation (frame) and to keep horizontal level of installed ceiling correctly in order to prevent vibration of ceiling board.

1. Cut and remove the ceiling foundation.
2. Reinforce the cut surface of ceiling foundation, and add ceiling foundation for fixing the end of ceiling board.

Installation of hanging bolt
Use M10 hanging bolts (4 pcs, locally procured). Matching to the existing structure, set pitch according to size in the unit external view as shown below.

Installation of ceiling opening and hanging bolt

• Attach a nut (locally procured) and the washer (accessory) to each hanging bolt.
• Insert a washer on both sides of the T groove of the hanging bracket of the indoor unit, and hang the indoor unit.
• Check that the four sides of the indoor unit are level using a level gauge (levelness: 5 mm or less).
• Detach the installation gauge (accessory) from the installation pattern.
• Using the installation gauge, check and adjust the positional relation between the indoor unit and the ceiling opening (1) (2.5 – 9.5 mm: 4 sides) and the hanging-up height (2) (23 – 28 mm: 4 corners).
  (How to use the installation gauge is printed on the gauge.)

For the grid ceiling, incline the unit and then mount the unit from the electrical control box side as shown in the figure below.

CAUTION
Before installation of the indoor unit, remove the tape that holds the fan and bell mouth. Running the unit without removing the tape may damage the fan motor.

Installation of ceiling panel (Sold separately)
Install the ceiling panel according to Installation Manual attached with it after piping / wiring work has completed.
Check that installation of indoor unit and ceiling opening part is correct, and then install it.

REQUIREMENT

• Joint the connecting sections of ceiling panel, ceiling surface, ceiling panel and indoor unit closely.
• Any gap between them will cause air leakage and the generate condensation or water leakage.
• Remove the adjust corner caps at the four corners of the ceiling panel, and then install the ceiling panel onto the indoor unit.
• Make sure that the claws of the four adjust corner caps are securely fit.

Improper fitting of the claws may cause water leakage.

Installation of remote controller (Sold separately)
For installation of the wired remote controller, follow the Installation Manual attached with the remote controller.

• Pull out the remote controller cord together with the refrigerant pipe or drain pipe.
• Be sure to pass the remote controller cord through upper side of the refrigerant pipe and drain pipe. Do not leave the remote controller at a place exposed to the direct sunlight and near a stove.

Installation of wireless remote controller (Sold separately)
The signal receiving unit of indoor unit can receive a signal by distance within approx. 7 m. Based upon it, determine a place where the remote controller is operated and the installation place.

• Operate the remote controller, confirm that the indoor unit receives a signal surely, and then install it.

• Keep 1 m or more from the devices such as television. (Disturbance of image or noise may generate.)

• To prevent a malfunction and reception failure of the remote controller, select a place where it is not influenced by a fluorescent light, equipment
  (Electronic whiteboard etc.) emitting infrared rays, or direct sunlight.

• Switching the setting (A-B selection) of the wireless remote controllers and the signal receiving unit enables two indoor units installed in a room to be respectively operated using two wireless remote controllers.

Drain piping

CAUTION
Following the Installation Manual, perform the drain piping work so that water is properly drained, and apply a heat insulation so as not to cause a dew dropping.
Inappropriate piping work may result in water leakage in the room and wet of furniture.

Piping / Heat insulating material
Require the following materials for piping and heat insulating at site.

Flexible hose
Use the attached flexible hose to adjust center discrepancy of the hard vinyl chloride pipe or to adjust the angle.

• Do not use the flexible hose as stretched, or do not deform it more extent than that in the following figure.
• Be sure to fix the soft end of the flexible hose with the attached hose band.
• Use the flexible hose on a horizontal level.

REQUIREMENT

• Be sure to perform heat insulation of the drain pipes of the indoor unit.
• Never forget to perform heat insulation of the connecting part with the indoor unit.
• An incomplete heat insulation causes dew dropping.
• Set the drain pipe with downward slope (1/100 or more), and do not make swelling or trap on the piping. It may cause an abnormal sound.
• For length of the traversing drain pipe, restrict to 20 m or less.
• In case of a long pipe, provide support brackets with interval of 1.5 to 2 m in order to prevent waving.
• Be sure not to apply force to the connecting part of the drain pipe.
• The hard vinyl-chloride pipe cannot be directly connected to the drain pipe connecting port of the indoor unit.
• For connection with the drain pipe connecting port, be sure to use / fix the attached flexible hose with the hose band, otherwise a damage or water leak is caused on the drain pipe connecting port.

Adhesive inhibited
Use the attached flexible hose and hose band for connecting the drain hose to the clear drain socket. If applying the adhesive, socket will be damaged and cause water leakage.

Connecting drain pipe

• Connect a hard socket (locally procured) to the hard socket of the attached supplied flexible hose.
• Connect a drain pipe (locally procured) to the connected hard socket.

REQUIREMENT

• Connect hard vinyl chloride pipes securely using an adhesive for vinyl chloride to avoid water leakage.
• It takes some time until the adhesive is dried and hardened (refer to the manual of the adhesive). Do not apply stress to the joint with the drain pipe during this time period.

Drain up
When a down-gradient cannot be secured for the drainpipe, drain-up piping is possible.

• The height of the drain pipe must be 850 mm or less from the bottom of the ceiling.
• Take the drain pipe out of the drain pipe joint with the indoor unit in 300 mm or less, and bend up the pipe vertically.
• Immediately after the pipe is bent up vertically, lay the pipe making a down-gradient.
• Set downward grading immediately after raising up vertically.

Check the draining

• In the test run, check that water drain is properly performed and water does not leak from the connecting part of the pipes.
• Be sure to check draining also when installed in heating period.
• Using a pitcher or hose, pour water (1500 to 2000 cc) into the discharge port before installation of the ceiling panel.
• Pour water gradually so that water does not spread on the motor of the drain pump.

CAUTION
Pour water gently so that it does not spread around inside the indoor unit, which may cause a malfunction.

• After the electric work has finished, pour water during COOL mode operation.

• If the electric work has not yet finished, pull out the float switch connector (CN34: Red) from the electrical control box, and check draining by plugging the single phase 220 – 240V power to the terminal blocks 1 and 2 .

• If doing so, the drain pump motor operates.
  (Never apply 220-240V to A or B , otherwise a trouble of P.C. Board occurs.)

• Test water drain while checking the operation sound of the drain pump motor.

• (If the operation sound changes from continuous sound to intermittent sound, water is normally drained.)

• After the check, the drain pump motor runs, connecting the float switch connector.

• (In case of check by pulling out the float switch connector, be sure to return the connector to the original position.)

Perform heat insulating

• As shown in the figure, cover the flexible hose and hose band with the attached heat insulator up to the bottom of the indoor unit without gap.

• Cover the drain pipe seamlessly with a heat insulator to be procured locally so that it overlaps with the attached heat insulator of the drain connecting section.

• Direct the slits and seams of the heat insulator upward to avoid water leakage.

Heat insulating

• As shown in the figure, cover the flexible hose and hose band with the attached heat insulator up to the bottom of the indoor unit without gap.
• Cover the drain pipe seamlessly with a heat insulator locally procured so that it overlaps with the attached heat insulator of the drain connecting section.
• Direct the slits and seams of the heat insulator upward to avoid water leakage.

Refrigerant piping

CAUTION
Use flare nuts that are included with the unit. Using different flare nuts may cause refrigerant gas leakage.

Refrigerant piping
Use the following item for the refrigerant piping. Material: Seamless phosphorous de-oxidized copper pipe.
6.35, 9.52 and 12.7 wall thickness 0.8 mm or more. 15.88 wall thickness 1.0 mm or more.

REQUIREMENT
When the refrigerant pipe is long, provide support brackets at intervals of 2.5 – 3 m to clamp the refrigerant pipe. Otherwise, abnormal sound may be generated.

CAUTION
IMPORTANT 4 POINTS FOR PIPING WORK

1. Reusable mechanical connectors and flared joints are not allowed indoors. When mechanical connectors are reused indoors, sealing parts shall be renewed.
   When flared joints are reused indoors, the flare part shall be re-fabricated.

2. Tight connection (between pipes and unit)

3. Evacuate the air in the connecting pipes by using VACUUM PUMP.

4. Check the gas leakage. (Connected points)

Permissible piping length and height difference
They vary depending on the outdoor unit. For details, refer to the Installation Manual attached to the outdoor unit.

Pipe size

Model RAV-| HM30| HM40

to HM56

---|---|---
Pipe size (Dia. : mm)| Gas side| 9.5| 12.7
Liquid side| 6.4| 6.4

Connecting refrigerant piping

Flaring

1. Cut the pipe with a pipe cutter.
   Remove burrs completely. (Remaining burrs may cause gas leakage.)

2. Insert a flare nut into the pipe, and flare the pipe. Use the flare nut provided with the unit or the one used for the R32 refrigerant. The flaring dimensions for R32 are different from the ones used for the conventional R22 refrigerant.
   A new flare tool manufactured for use with the R32 refrigerant is recommended, but the conventional tool can still be used if the projection margin of the copper pipe is adjusted to be as shown in the following table.

Projection margin in flaring: B (Unit: mm)

0 to 0.5

|

1.0 to 1.5

12.7, 15.9

Flaring diameter size: A (Unit: mm)

Outer dia. of copper pipe| A +0

–0.4

---|---
6.4| 9.1
9.5| 13.2
12.7| 16.6
15.9| 19.7

CAUTION

• Do not scratch the inner surface of the flared part when removing burrs.
• Flare processing under the condition of scratches on the inner surface of flare processing part will cause refrigerant gas leak.
• Check that the flared part is not scratched, deformed, stepped, or flattened, and that there are no chips adhered or other problems, after flare processing.
• Do not apply refrigerating machine oil to the flare surface.
• In case of flaring for R32 with the conventional flare tool, pull it out approx. 0.5 mm more than that for R22 to adjust to the specified flare size. The copper pipe gauge is useful for adjusting projection margin size.
• The sealed gas was sealed at the atmospheric pressure so when the flare nut is removed, there will no “whooshing” sound: This is normal and is not indicative of trouble.
• Use two wrenches to connect the indoor unit pipe.
• Use the tightening torque levels as listed in the following table.

Tightening torque of flare pipe connections. Pressure of R32 is higher than that of R22.
(Approx. 1.6 times) Therefore, using a torque wrench, tighten the flare pipe connecting sections which connect the indoor and outdoor units of the specified tightening torque.
Incorrect connections may cause not only a gas leak, but also a trouble of the refrigeration cycle.

CAUTION
Tightening with an excessive torque may crack the nut depending on installation conditions.

Piping with outdoor unit
Shape of valve differs according to the outdoor unit. For details of installation, refer to the Installation Manual of the outdoor unit.

Evacuation
Perform vacuuming from the charge port of valve of the outdoor unit by using a vacuum pump.
For details, follow to the Installation Manual attached to the outdoor unit.

• Do not use the refrigerant sealed in the outdoor unit for evacuation.

REQUIREMENT
For the tools such as charge hose, use those manufactured exclusively for R32.

Refrigerant amount to be added
For addition of the refrigerant, add refrigerant “R32” referring to the attached Installation Manual of outdoor unit.
Use a scale to charge the refrigerant of specified amount.

REQUIREMENT

• Charging an excessive or too little amount of refrigerant causes a trouble of the compressor. Charge the refrigerant of specified amount.
• A personnel who charged the refrigerant should write down the pipe length and the added refrigerant amount in the F-GAS label of the outdoor unit. It is necessary to fix the compressor and refrigeration cycle malfunction.

Airtight test / Air purge, etc.
For air tightness test, vacuum drying and adding refrigerant, refer to the Installation Manual attached to the outdoor unit.

CAUTION
Do not supply power to the indoor unit until the airtight test and vacuuming are completed. (If the indoor unit is powered on, the pulse motor valve is fully closed, which extends the time for vacuuming.)

Open the valve fully
Open the valve of the outdoor unit fully.
For details, refer to the Installation Manual attached to the outdoor unit.

Gas leak check
Check with a leak detector or soap water whether gas leaks or not, from the pipe connecting section or cap of the valve.

REQUIREMENT
Use a leak detector manufactured exclusively for HFC refrigerant (R32, R134a, R410A, etc).

Heat insulation process
Apply heat insulation for the pipes separately at liquid side and gas side.
For the heat insulation to the pipes at gas side, be sure to use the material with heat-resisting temperature 120°C or higher.
Using the attached heat insulation material, apply the heat insulation to the pipe connecting section of the indoor unit securely without gap.

REQUIREMENT

• Apply the heat insulation to the pipe connecting section of the indoor unit securely up to the root without exposure of the pipe. (The pipe exposed to the outside causes water leak.)
• Wrap heat insulator with its slits facing up (ceiling side).

Electrical connectionElectrical connection

WARNING

• Use the specified wires for wiring connect the terminals. Securely fix them to prevent external forces applied to the terminals from affecting the terminals.
• Incomplete connection or fixation may cause a fire or other trouble.
• Connect earth wire. (grounding work)
• Incomplete earthing cause an electric shock.
• Do not connect earth wires to gas pipes, water pipes, lightning conductor or telephone earth wires.
• Appliance shall be installed in accordance with national wiring regulations.
• Capacity shortage of power circuit or incomplete installation may cause an electric shock or a fire.
• Under no circumstances, the power supply wire or the indoor and outdoor connecting wire must not be connected in the middle (Connection using a solderless terminal etc.)
• Connection trouble in the places where the wire is connected in the middle may give rise to smoking and/or a fire.

CAUTION

• For power supply specifications, follow the Installation Manual of outdoor unit.
• Do not connect 220 – 240V power to the terminal blocks ( , ) for control wiring.
• Otherwise, the system will fail.
• Do not damage or scratch the conductive core and inner insulator of power and system interconnection wires during peeling them.
• Perform the electric wiring so that it does not come to contact with the high-temperature part of the pipe.
• The coating may melt resulting in an accident.

Do not turn on the power of the indoor unit until vacuuming of the refrigerant pipes completes.

Wiring specifications
Indoor / Outdoor connecting wires specifications

Indoor unit power supplied from outdoor unit

• The outdoor unit power supply patterns vary on models

Indoor unit power supply| 1~50 Hz 220 – 240V

1~60 Hz 220V

|
---|---|---
Indoor / Outdoor connecting wires| 4 × 1.5 mm² or more (H07 RN-F or 60245 IEC 66)| Up to 70 m

Number of wire × wire size
Including earth line

Remote controller wiring

Remote controller wiring, remote controller inter-unit wiring Wire size: 2 × 0.5 to 2.0 mm²

Total wire length of remote controller wiring and remote controller inter-unit wiring = L + L1 + L2 + … Ln| In case of wired type only| Up to 500 m
---|---|---
2 remote controllers| Up to 300 m
In case of wireless type included| Up to 400 m
Total wire length of remote controller inter-unit wiring = L1 + L2 + … Ln| Up to 200 m

• The remote controller wiring length differs depending on the remote controller used. For details, refer to the Installation Manual attached to the remote controller.

CAUTION
The remote controller wire and Indoor / Outdoor connecting wires cannot be parallel to contact each other and cannot be stored in the same conduits. If doing so, a trouble may be caused on the control system due to noise or other factor.

Communication type
TU2C-Link can be used with these models.
If the indoor unit and the connected remote controller / remote sensor are all TU2C-Link models, TU2C-Link communication will be performed automatically.
For details of communication type, refer to the following table.

Communication type and model names

CAUTION
In the following cases, change the communication type to TCC-Link with the wired remote controller by referring to the procedure of Communication type procedure of “7 Applicable controls” for normal operation.

• When performing group control in combination with the indoor unit dedicated to TCC-Link (other than RAV-HM series).
• When connecting to the central control device dedicated to TCC-Link.

Max. number of connect-able indoor units, and communication type

This letter indicates U series model.

|

Other than U series

Wireless remote controller kit & receiver unit| RBC-AX U

This letter indicates U series model.

|

Other than U series

Remote sensor

| TCB-TC      U

This letter indicates U series model.

|

Other than U series

*: Other than RAV-HM *** and U series

Wiring between indoor unit and outdoor unit

1. Figure below shows the wiring connections between the indoor and outdoor units and between the indoor units and remote controller. The wires indicated by the broken lines or dot-and-dash lines are provided at the locally.
2. Refer to the both indoor and outdoor unit wiring diagrams.
3. The power of the indoor unit is supplied from the outdoor unit.

Wiring diagram

Simultaneous triple and double twin system

• Use 2-core shield wire (MVVS 0.5 to 2.0 mm² or more) for the remote controller wiring in the simultaneous twin, simultaneous triple and simultaneous double twin systems to prevent noise problems. Connect both ends of the shield wire to earth leads.
• Connect earth wires for each indoor unit in the simultaneous twin, simultaneous triple and simultaneous double twin systems.

Wiring connection

REQUIREMENT

• Connect the wires matching the terminal numbers. Incorrect connection causes a trouble.
• Route the wire through the wire connection port of the indoor unit.
• The low-voltage circuit is provided for the control wire and remote controller wire. (Do not connect the high-voltage circuit.)

1. Loosen the two screws, and remove the cover of electrical control box by sliding in the direction of the arrow.
2. Connect the Indoor / Outdoor connecting wires and remote controller wire to the terminal block of the electrical control box.
3. Tighten the screws of the terminal block, and fix the wires with cord clamp attached to the electrical control box.(Do not apply tension to the connecting section of the terminal block.)
4. Mount the cover of the electrical control box without pinching wires.
   (Mount the cover after wiring on the ceiling panel.)

CAUTION
*1 Make sure to fix the power supply wire with the cord clamp so that no water enters into the electrical control box through the power supply wire.

Remote controller wiring
Strip off approx. 9 mm the wire to be connected.

Wiring diagram

Wiring on the ceiling panel
According to the Installation Manual of the ceiling panel, connect the louver motor connector on the ceiling panel side and the louver motor connector on the indoor unit side.

Applicable controls

REQUIREMENT
When the air conditioner is used for the first time, it will take some moments after the power has been turned on before the remote controller becomes available for operations: This is normal and is not indicative of trouble.

• Concerning the automatic addresses (The automatic addresses are set up by performing operations on the outdoor interface circuit board.)
• While the automatic addresses are being set up, no remote controller operations can be performed. Setup takes up to 10 minutes (usually about 5 minutes).
• When the power is turned on after automatic address setup
• It takes up to 10 minutes (usually about 3 minutes) for the outdoor unit to start operating after the power has been turned on.

Before the air conditioner was shipped from the factory, all units are set to [STANDARD] (factory default).
If necessary, change the indoor unit settings.
The settings are changed by operating the wired remote controller.

• The settings cannot be changed using only a wireless remote controller, simple remote controller or group control remote controller by itself so install a wired remote controller separately as well.

Applicable controls setup (settings at the site)

Remote controller model name:
RBC-ASCU11-E
Basic procedure
Be sure to stop the air conditioner before making settings.
(Change the setup while the air conditioner is not working.)

CAUTION
Set only the Code No. shown in the following table: DO NOT set any other Code No.
If a Code No. not listed is set, it may not be possible to operate the air conditioner or other trouble with the product may result.

1. Push and hold menu button and[∇ ] setting button simultaneously for 10 seconds or more.
   After a while, the display flashes as shown in the figure. “ALL” is displayed as indoor unit numbers during initial communication immediately after the power has been turned on.

2. Each time setting button is pushed, indoor unit numbers in the group control change cyclically. Select the indoor unit to change settings for.
   The fan of the selected indoor unit runs. The indoor unit can be confirmed for which to change settings.

3. Push OFF timer button to confirm the selected indoor unit.

4. Push the menu button to make Code No. [] flash. Change Code No. [] with setting button.

5. Push the menu button to make Set data [] flash. Change Set data [] with setting button.

6. Push OFF timer button.
   By doing so, the setup is completed.
   To change other settings of the selected indoor unit, repeat from Procedure 4.

7. When all the settings have been completed, push ON/OFF button to determine the settings.
   “ ” flashes and then the display content disappears and the air conditioner enters the normal stop mode. (The remote controller is unavailable while “ ” is flashing.)
   To change settings of another indoor unit, repeat from Procedure 1.

Installing indoor unit on high ceiling
When an indoor unit is installed on a ceiling higher than the standard height, make the high-ceiling setting for fan speed adjustment.
Follow to the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6 ).

• For the CODE No. in Procedure 4, specify [5d].
• Select the SET DATA for Procedure 5 from the “Height list of ceiling possible to be installed” table in this manual.

Remote controller-less setting

• Change the high-ceiling setting with the DIP switch on the receiver section P.C. Board.

• For details, refer to the manual of the wireless remote controller kit. The settings can also be changed with the switch on the indoor microcomputer P.C. Board.

• Once the setting is changed, setting to 0001 or 0003 is possible, however setting to 0000 requires a setting data change to 0000 using the wired remote controller (separately sold) with the normal switch setting (factory default).

To restore the factory defaults
To return the DIP switch settings to the factory defaults, set SW501-1 and SW501-2 to OFF, connect a separately sold wired remote controller, and then set the data of CODE No. [5d] to “0000”.

Change of lighting time of filter sign
According to the installation condition, the lighting time of the filter sign (Notification of filter cleaning) can be changed.
Follow the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6 ).

For the CODE No. in Procedure 4, specify [01]. For the SET DATA in Procedure 5, select the SET DATA of filter sign lighting time from the following table.

To secure better effect of heating
When it is difficult to obtain satisfactory heating due to installation place of the indoor unit or structure of the room, the detection temperature of heating can be raised. Also use a circulator, etc. to circulate heat air near the ceiling.
Follow the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6 ).

• For the CODE No. in Procedure 4, specify [06].
• For the SET DATA in Procedure 5, select the SET DATA of shift value of detection temperature to be set up from the table below.

How to set up swing type
The swing type of the louver can be selected.
Follow to the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6 → 7 ).

• Specify [F0] for the CODE No. in Procedure 4.
• Select the following data for the SET DATA in Procedure 5.

About “Dual swing”
“Dual” means that louvers 01 and 03 are directed and swing in one direction and louvers 02 and 04 are directed and swing in the opposite direction. (When louvers 01 and 03 are directed downward, louvers 02 and 04 are directed horizontally.)

About “Cycle swing”
The four louvers swing independently at respective timings.

CAUTION
Do not set the swing SET DATA to “0000”.
(This setting may cause a failure of the louvers.)

How to set up louver lock (No swing)
A position of the individual louvers (four directions) can be locked.
Follow to the basic operation procedure
(1 → 2 → 3 → 4 → 5 → 6 → 7 ).

• Specify [F1], [F2], [F3] or [F4] for the CODE No. in Procedure 4.
• Select the following data for the SET DATA in Procedure 5.
• When (4) or (5) is selected, dew drop may occur during cooling mode.
• When the setting has been determined,+  lights up.

How to cancel louver lock
Set the wind direction to “0000” of the louver lock setup procedure above.

When the setting is canceled, goes out. Other operations are the same as those in “How to set up louver lock (No swing)”.

To select horizontal wind direction
The louver positions at cooling can be changed from the smudge reducing position to the cold draftless position.
Follow to the basic operation procedure (1 → 2 → 3 → 4 → 5 → 6 → 7 ).

• Specify [45] for the Code NO. in Procedure 4.
• Select the following data for the SET DATA in Procedure 5.

0000

| Smudge reducing position (Air direction to reduce ceiling contamination) [Factory default]
0002| Cold draft position

(Air direction to control cold air fall)

Group control
In a group control, a remote controller can control up to maximum 8 or 16 units. (Depending on the outdoor unit.)

• The wired remote controller only can control a group control. The wireless remote controller is unavailable for this control.

• For wiring procedure and wiring method of the individual line (Identical refrigerant line) system, refer to “Electrical connection” in this Manual.

• Wiring between indoor units in a group is performed in the following procedure.

• Connect the indoor units by connecting the remote controller inter-unit wires from the remote controller terminal blocks (A/B) of the indoor unit connected with a remote controller to the remote controller terminal blocks (A/B) of the other indoor unit.
  (Non-polarity)

• For address setup, refer to the Installation Manual attached to the outdoor unit.

Remote controller sensor
The temperature sensor of the indoor unit senses room temperature usually. Set the remote controller sensor to sense the temperature around the remote controller. Select items following the basic operation procedure (1 → 2 → 3 → 4 → 5 → 6 → 7 ).

• Specify [32] for the CODE No. in Procedure 4.
• Select the following data for the SET DATA in Procedure 5.

When flashes, the remote controller sensor is defective.
Select the SET DATA [0000] (not used) or replace the remote controller.

Test run

Before test run
Before turning on the circuit breaker, carry out the following procedure.

1. By using insulation tester (500VMΩ), check that resistance of 1MΩ or more exists between the terminal block L to N and the earth (grounding). If resistance of less than 1MΩ is detected, do not run the unit.
2. Check the valve of the outdoor unit being opened fully.
   • To protect the compressor at activation time, leave power-ON for 12 hours or more be for operating.
   • Before starting a test run, be sure to set addresses following the Installation Manual supplied with the outdoor unit.

Requirements for turning thermostat OFF

Cooling operation

When the outdoor/suction air temperature is lower than or equal to 19 °C.
When the outdoor/suction air temperature is lower than or equal to 3 °C above the set temperature.

Heating operation

• When the outdoor/suction air temperature is lower than or equal to -10 °C
• When the outdoor/suction air temperature is higher than or equal to 15 °C.
• When the outdoor/suction air temperature is higher than or equal to 3 °C above the set temperature.

Execute a test run
When a fan operation is to be performed for an individual indoor unit, turn off the power, short circuit CN72 on the circuit board, and then turn the power back on. (Set the operation mode to “fan” to operate the unit.) When the test run has been performed using this method, be sure to release the short circuit of CN72 after the test run is completed. Operate the unit with the remote controller as usual. For the procedure of the operation, refer to the attached Owner’s Manual to the outdoor unit.
A forced test run can be executed in the following procedure even if the operation stops by thermostat-OFF.
In order to prevent a serial operation, the forced test run is released after 60 minutes have passed and returns to the usual operation.

CAUTION
Do not use the forced test run for cases other than the test run because it applies an excessive load to the devices.

Wired remote controller
Be sure to stop the air conditioner before making settings.
(Change the setup while the air conditioner is not working.)

1 Push and hold OFF timer button and  setting button simultaneously for 10 seconds or more. [TEST] is displayed on the display part and the test run is permitted.
2 Push ON/OFF button.
3 Push menu button to select the operation mode. Select [ 4 After the test run, push OFF timer button Cool] or
setting button, and then push menu button (three times) again to determine the operation mode. 4 After the test run, push OFF timer button to stop a test run.
([TEST] disappears on the display and the air conditioner enters the normal stop mode.)

Wireless remote controller

• 1 Turn on the power of the air conditioner. When power is turned on for the first time after installation, it takes approx. 5 minutes until the remote controller becomes available. In the case of subsequent power-on, it takes approx. 1 minute until the remote controller becomes available. Execute a test run after the predetermined time has passed.

• 2 Push “ON/OFF” button on the remote 6 Repeat procedures 4 → 5 → 4 → 5.

• 6 Repeat procedures 4 → 5 → 4 → 5. Indicators “Operation” (green), “Timer” (green), and “Ready” (orange) in the wireless receiver section flash in approx. 10 seconds, and the air conditioner starts operation. If any of these indicators does not flash, repeat procedures 2 to 5.

• 7 Upon completion of the test run, push “ON/OFF” button to stop operation.

  • ▼ Cooling test run:
    ON/OFF → 17°C → 18°C → 17°C → 18°C → 17°C → 18°C → 17°C → (test run) → ON/OFF

  • ▼ Heating test run:
    ON/OFF → 30°C → 29°C → 30°C → 29°C → 30°C → 29°C → 30°C → (test run) → ON/OFF

Maintenance

CAUTION
When connecting to an outdoor unit of R32 refrigerant and using a leak detector, be sure to turn on the circuit breaker after maintenance to detect the leakage of refrigerant and take safety measures.