TOSHIBA MMU-UP0181MHP-E (01) PDF DOCUMENT

The following accessory parts are supplied with your TOSHIBA MMU-UP0181MHP-E indoor unit:

The Ceiling panel and remote controller for the TOSHIBA MMU-UP0181MHP-E 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.

WARNING

• Install the air conditioner at an 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 of 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 a revolving fan or active electricity.

CAUTION

• Do not install in a location where flammable gas leaks are possible. If the gas leaks and accumulates around the unit, it may ignite and cause a fire.

• When an outdoor unit using R32 refrigerant is combined with the indoor unit, pay 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 for the outdoor unit.

Upon approval of the customer, avoid installing the air conditioner 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 a place near machines in a factory. (Oil adhering to the heat exchanger and resin parts in the indoor unit may reduce 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’s house (for the outdoor unit).

• Place where noise of the outdoor unit is easily transmitted. (When installing 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 the 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 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 Requirements:

• 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 the top plate of the indoor unit and the ceiling surface.

• A clearance of 1000 mm or more is required from any obstacles on the sides.

• A service check opening panel (size: 450 x 450 mm or more) must be set at the electrical control box side of the unit for piping, maintenance, and servicing.

Ceiling Height Requirements:

The installable ceiling height for the TOSHIBA MMU-UP0181MHP-E (UP015 to UP018 type) is up to 3.5 meters.

When the height of the ceiling exceeds the standard distance, the warm air may have difficulty reaching the floor. It is necessary to change the setup value of the high ceiling setting or discharge direction. The following settings are possible:

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

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

1. Unit is installed inside the ceiling with a slated roof.

2. Unit is installed at a location using the inside of the ceiling as a 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.

First, procure hanging bolts (M10 or W3/8, 4 pieces) and nuts (12 pieces) as they are not supplied. Follow these steps:

1. Attach a nut (locally procured) and the washer (accessory) to each hanging bolt.

2. Insert a washer on both sides of the T groove of the hanging bracket of the indoor unit, and hang the indoor unit.

3. Check that the four sides of the indoor unit are level using a level gauge (levelness: 5 mm or less).

4. Detach the installation gauge (accessory) from the installation pattern.

5. Using the installation gauge, check and adjust the positional relation between the indoor unit and the ceiling opening (2.5 – 9.5 mm: 4 sides) and the hanging-up height (23 – 28 mm: 4 corners).

6. To prevent the bolt from falling off, be sure to set the washer just under the hanging bracket.

For grid ceilings: Incline the unit and then mount the unit from the electrical control box side.

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.

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

Required Materials:

• Piping: Hard vinyl chloride pipe VP25 (Outer dia.: 32 mm)

• Heat insulator: Foam polyethylene, Thickness 10 mm or more

General Requirements:

• For the length of the traversing drain pipe, restrict it to 20 m or less.

• In case of a long pipe, provide support brackets with an interval of 1.5 to 2 m in order to prevent waving. Avoid arched shapes or traps.

• Set the collective piping with a downward slope of 1/100 or more.

• 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, use the attached flexible hose and hose band.

• Be sure to perform heat insulation of the drain pipes, including the connecting part with the indoor unit. An incomplete heat insulation causes dew dropping.

When a down-gradient cannot be secured for the drainpipe, drain-up piping is possible. Follow these steps:

1. The height of the drain pipe must be 850 mm or less from the bottom of the ceiling.

2. 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.

3. Immediately after the pipe is bent up vertically, lay the pipe making a down-gradient.

4. Set downward grading immediately after raising up vertically.

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.

1. 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 it does not spread on the motor of the drain pump.

2. Insert the leading part of the hose between the heat exchanger and the drain pan, and then bend it downward to pour the water.

3. After the electric work has finished, pour water during COOL mode operation. If the electric work has not yet finished, you can test the drain pump by pulling out the float switch connector (CN34: Red) from the electrical control box and supplying single-phase 208V to 240V power to terminal blocks (L) and (N).

4. Listen to the operation sound of the drain pump motor. If the operation sound changes from continuous to intermittent, water is normally drained.

5. After the check, reconnect the float switch connector if it was removed.

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

Flaring Procedure:

1. Cut the pipe with a pipe cutter and remove burrs completely. Remaining burrs may cause gas leakage. Do not scratch the inner surface of the flared part.

2. Insert a flare nut into the pipe, and flare the pipe. Use the flare nut provided with the unit or one used for R32 or R410A refrigerant.

3. Adjust the projection margin of the copper pipe according to the tool used:

4. Ensure the flaring diameter is correct:

Connection and Tightening:

1. Use two wrenches to connect the indoor unit pipe.

2. Using a torque wrench, tighten the flare pipe connecting sections to the specified tightening torque. Incorrect connections may cause not only a gas leak, but also a trouble of the refrigeration cycle.

WARNING

• Use the specified wires for wiring and 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 the earth wire (grounding work). Incomplete grounding can cause an electric shock. Do not connect earth wires to gas pipes, water pipes, lightning conductors, or telephone earth wires.

• The appliance shall be installed in accordance with national wiring regulations. Capacity shortage of the power circuit or incomplete installation may cause an electric shock or a fire.

CAUTION

• For the communication line, use wires with the same type and size. If each wire has a different type and size from another one, it will cause a communication trouble.

• If incorrect/incomplete wiring is carried out, it will cause an electrical fire or smoke.

• Install an earth leakage breaker that is not tripped by shock waves. If an earth leakage breaker is not installed, an electric shock may be caused.

• Use the cord clamps attached to the product.

• Do not damage or scratch the conductive core and inner insulator of power and system interconnection wires when peeling them.

• Use the power supply wire and control wires of specified thickness, type, and protective devices required.

• Do not connect 208-240V power to the terminal blocks (Uv (U1)), (Uv (U2)), (A), (B) for control wiring. (Otherwise, the system will fail.)

• Perform the electric wiring so that it does not come into contact with the high-temperature part of the pipe. The coating may melt, resulting in an accident.

REQUIREMENT: Connect the wires matching the terminal numbers. Incorrect connection causes 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 the electrical control box by sliding it in the direction of the arrow.

2. Connect the power supply wire, control wiring, 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 the 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.

The cord clamping position depends on the wire type:

Be sure to stop the air conditioner before making settings. The settings cannot be changed using only a wireless remote controller, simple remote controller, or group control remote controller by itself, so a wired remote controller must be installed.

1. Push and hold the menu button and [✔] setting button simultaneously for 10 seconds or more. After a while, the display flashes and “ALL” is displayed as the indoor unit number.

2. Each time the [▽] [▲] setting button is pushed, the indoor unit numbers in the group control change cyclically. Select the indoor unit to change settings for. The fan of the selected indoor unit will run for confirmation.

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

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

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

6. Push the OFF timer button. The setup is completed.

7. When all the settings have been completed, push the ON/OFF button to determine the settings. “SETTING” flashes, then the display content disappears and the air conditioner enters the normal stop mode.

CAUTION: Set only the Code No. shown in the tables. 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.

When an indoor unit is installed on a ceiling higher than the standard height, make the high-ceiling setting for fan speed adjustment.

1. Follow the basic operation procedure for changing settings.

2. For the CODE No. in Procedure 4, specify [5d].

3. Select the SET DATA for Procedure 5 from the table below:

According to the installation condition, the lighting time of the filter sign can be changed.

1. Follow the basic operation procedure for changing settings.

2. For the CODE No. in Procedure 4, specify [01].

3. For the SET DATA in Procedure 5, select the desired time from the following table:

A forced test run can be executed even if the operation stops by thermostat-OFF. The forced test run is released after 60 minutes. Be sure to stop the air conditioner before making settings.

1. Push and hold the 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 the ON/OFF button.

3. Push the menu button to select the operation mode. Select [Cool] or [Heat] with the [▽] [▲] setting button, and then push the menu button (three times) again to determine the operation mode.

• Do not run the air conditioner in a mode other than [Cool] or [Heat].

• The temperature setting function does not work during the test run.

• The check code is displayed as usual.

4. After the test run, push the OFF timer button to stop the test run. ([TEST] disappears from the display).

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

1. Turn off the air conditioner. Set the circuit breaker to OFF.

2. Open the air intake grille:

• Loosen the fixing screw.

• Slide the fixing bracket toward the inside.

• Holding the air intake grille, slide the hook in the direction of the arrow and slowly open the grille.

3. Take out the air filter: Push the extrusion of the air filter away from the grille and remove.

4. Clean with water or a vacuum cleaner. If dirt is heavy, clean the air filter using tepid water with a neutral detergent or just water. After cleaning with water, dry the air filter sufficiently in a shaded place.

5. Mount the air filter.

6. Close the air intake grille. Check that the fall-preventive strap of the air intake grille is attached to the panel. In the inverse process of opening, firmly attach the hook, fixing bracket, and fixing screw.

7. Set the circuit breaker to ON.

CAUTION: Do not start the air conditioner while leaving the air filter removed.

For environmental conservation, it is strongly recommended that the indoor and outdoor units of the air conditioner in use be cleaned and maintained regularly to ensure efficient operation. When the air conditioner is operated for a long time, periodic maintenance (once a year) is recommended. Furthermore, regularly check the outdoor unit for rust and scratches, and remove them or apply rustproof treatment, if necessary.

As a general rule, when an indoor unit is operated for 8 hours or more daily, clean the indoor and outdoor unit at least once every 3 months. Ask a professional for this cleaning/maintenance work. Such maintenance can extend the life of the product though it involves the owner’s expense. Failure to clean the indoor and outdoor units regularly will result in poor performance, freezing, water leakage, and even compressor failure.

Maintenance List:

You can check the troubleshooting history (up to 4 incidents) if a problem occurs. This can be done during operation or when operation is stopped.

1. Push the OFF timer button for over 10 seconds. The indicators will appear, indicating the troubleshooting history mode has been entered. The temperature indicator will show the order of troubleshooting history (e.g., [01] for newest). The OFF timer indicator will alternately show the [check code] and the [indoor Unit No.] in which the problem occurred.

2. Each time the setting button is pushed, the recorded troubleshooting history is displayed in sequence from [01] (newest) to [04] (oldest).

3. After you have finished checking, push the ON/OFF button to return to the regular mode.

CAUTION: In the troubleshooting history mode, DO NOT push the Menu button for over 10 seconds, as doing so deletes the entire troubleshooting history of the indoor unit.

A notice code is a function only in TU2C-Link communication. It appears as a spanner mark on the wired remote controller when the unit detects conditions requiring caution or maintenance. The air conditioner can still operate normally. Here are the notice codes:

Yes, the existing R22 and R410A piping can be reused for inverter R32 product installations, but only if specific conditions are met.

WARNING: Confirming the existence of scratches or dents on the existing pipes and confirming the reliability of the pipe strength are conventionally referred to the local site. If the specified conditions can be cleared, it is possible to update existing R22 and R410A pipes to those for R32 models.

Basic conditions needed to reuse existing pipes:

1. Dry: There is no moisture inside of the pipes.

2. Clean: There is no dust inside of the pipes.

3. Tight: There are no refrigerant leaks.

Restrictions for use of existing pipes (do not reuse in these cases):

• When a scratch or dent is heavy, use new pipes.

• When the existing pipe thickness is thinner than the specified thickness, use new pipes.

• When the outdoor unit was left with the pipes disconnected, or gas leaked from the pipes and they were not repaired.

• When refrigerant cannot be recovered using a refrigerant recovery unit.

• When a commercially available dryer is attached to the existing pipes.

• When the existing air conditioner is removed after refrigerant has been recovered and the oil is clearly different from normal oil (e.g., green color, discolored, large quantity of residue, bad smell).

• When the air conditioner has a history of the compressor failing and being replaced.

• When temporary installation and removal of the air conditioner are repeated.

• If the type of refrigerator oil of the existing air conditioner is other than Mineral oil, Suniso, Freol-S, MS (Synthetic oil), alkyl benzene (HAB, Barrel-freeze), ester series, or PVE only of ether series.