TOSHIBA MMU-UP0151MHP-E (01) PDF DOCUMENT

The following accessory parts are supplied with your TOSHIBA MMU-UP0151MHP-E indoor unit:

Note: The Ceiling panel and remote controller are sold separately. The wireless type remote controller is designed to be installed by attaching a wireless remote controller kit (sold separately) to the standard panel.

Upon approval, install the TOSHIBA MMU-UP0151MHP-E in a place that satisfies the following conditions:

• A place where the unit can be installed horizontally.

• A place where a sufficient servicing space can be ensured for safety maintenance and checks.

• A place where drained water will not cause any problems.

WARNINGS:

• Install the air conditioner at a strong enough 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 to prevent contact with the revolving fan or active electricity.

CAUTIONS:

• Do not install in a location where flammable gas leaks are possible. If 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.

Avoid installing the TOSHIBA MMU-UP0151MHP-E in the following places:

• A place exposed to air with high salt content (seaside area) or large quantities of sulfide gas (hot spring). Special protective measures are needed for these locations.

• 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 may reduce performance, generate mist, or damage resin parts.

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

• A place where organic solvent is used nearby.

• A place close to a machine generating high frequency.

• A place where the discharged air blows directly into the window of a neighbor’s house (for the outdoor unit).

• A place where noise from the outdoor unit is easily transmitted.

• A place with poor ventilation.

• Locations for special purposes such as preserving food, precision instruments, art objects, or where breeding animals or growing plants are kept, as this may degrade the quality of preserved materials.

• A place where any high-frequency appliances (inverter devices, private power generators, medical equipment, etc.) and inverter-type fluorescent light are installed, as this may cause malfunctions.

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

• A place near a door or window exposed to humid outside air, as dew dropping may form.

• A place where special spray is used frequently.

Ensure there is sufficient space to install the TOSHIBA MMU-UP0151MHP-E and perform maintenance. The required clearances are as follows (Unit: mm):

• Keep 15 mm or more for clearance between the top plate of the indoor unit and the ceiling surface.

• A space of 1000 mm or more is required in front of the unit (or away from any obstacle).

• The vertical clearance below the unit should be 271 mm or more.

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

• For continued operation under high-humidity conditions (dew point temperature: 23°C or more), dew may condense. This can occur if the unit is installed inside a ceiling with a slated roof, used as a fresh air take-in path, or in a kitchen. If the humidity inside the ceiling is higher than 80%, attach a heat insulator (10 mm or more thick) to the side (top) surface of the indoor unit.

The installable ceiling height for the TOSHIBA MMU-UP0151MHP-E is up to 3.5 meters.

When the ceiling height exceeds the standard distance, warm air may have difficulty reaching the floor. It is necessary to change the high ceiling setting or discharge direction. The following table lists the possible ceiling heights and required settings:

REQUIREMENT: When high ceiling (1) or (3) is used with 4-way blowing, a draft is easily recognized due to a drop in discharge temperature. The lighting time of the filter sign and the detection temperature of heating can also be changed. Refer to “7. Applicable controls” for the setting procedure.

Follow these steps to open the ceiling and install the hanging bolts for your TOSHIBA MMU-UP0151MHP-E.

Before you begin:

• Procure M10 or W3/8 hanging bolts (4 pieces) and nuts (12 pieces) locally.

• Remove the tape that holds the fan and bell mouth before installation. Running the unit without removing the tape may damage the fan motor.

Installation Steps:

1. Determine Location: Consider the piping and wiring when determining the indoor unit’s location and orientation.

2. Open Ceiling: After determining the location, open the ceiling. The dimensions are given in the outline drawing and the attached installation pattern.

3. Install Hanging Bolts: Install the four M10 hanging bolts. The method depends on the ceiling structure:

• New concrete slab: Install bolts with insert brackets or anchor bolts.

• Steel frame structure: Use existing angles or install new support angles.

• Existing concrete slab: Use hole-in anchors, hole-in plugs, or hole-in bolts.

4. Hang the Indoor Unit:

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

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

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

6. Adjust Position with Installation Gauge:

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

• Use the gauge to check and adjust the positional relation between the indoor unit and the ceiling opening (2.5 – 9.5 mm on all 4 sides) and the hanging-up height (23 – 28 mm at all 4 corners).

7. Secure the Unit: Use the accessory eccentric washer and another nut (M10 or W3/8) to secure the unit on the hanging bolts. Ensure the washer (Accessory) is set just under the hanging bracket to prevent the bolt from falling off.

Properly performing the drain piping work is crucial to prevent water leakage. Follow these instructions carefully.

Required Materials:

Instructions for Flexible Hose:

• Use the attached flexible hose to adjust center discrepancy or angle. Do not stretch or deform it excessively.

• Fix the soft end of the flexible hose with the attached hose band.

• Use the flexible hose on a horizontal level.

General Piping Instructions:

• The length of the traversing drain pipe should be restricted to 20 m or less.

• For a long pipe, provide support brackets at intervals of 1.5 to 2 m to prevent waving.

• Set the drain pipe with a downward slope of 1/100 or more. Do not create any swelling or traps in the piping, as this may cause abnormal sounds.

• Do not 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. Use the attached flexible hose and hose band for this connection.

• For connecting the drain hose to the clear drain socket, use the attached flexible hose and hose band. Applying adhesive can damage the socket and cause water leakage.

Heat Insulation:

• You must perform heat insulation on the drain pipes and the connecting part with the indoor unit. Incomplete heat insulation will cause dew dropping.

Connecting the Drain Pipe:

1. Connect a hard socket (locally procured) to the hard socket of the supplied flexible hose.

2. Connect a drain pipe (locally procured) to this hard socket.

3. Use an adhesive for vinyl chloride to securely connect the pipes and prevent water leakage. Allow time for the adhesive to dry and harden before applying stress to the joint.

Drain Up Piping (if a down-gradient cannot be secured):

• 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 within 300 mm of the indoor unit, and bend the pipe vertically.

• Immediately after the vertical bend, lay the pipe with a downward gradient.

Checking the Draining:

1. Before installing the ceiling panel, pour 1500 to 2000 cc of water into the discharge port using a pitcher or hose. Pour the water gradually and gently to avoid it spreading onto the motor of the drain pump.

2. Check that water drains properly and does not leak from any connecting parts.

3. If electrical work is complete, you can pour water during COOL mode operation to test the drain.

4. If electrical work is not finished, you can test the drain pump by pulling out the float switch connector (CN34: Red) and applying single-phase 208V to 240V power to the terminal blocks (L) and (N). The drain pump motor will operate. Never apply power to terminals (Uv(U1)), (Uv(U2)), (A), (B).

5. Listen to the drain pump motor. If the sound changes from continuous to intermittent, the water is draining normally.

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

Performing Heat Insulation:

• Cover the flexible hose and hose band with the attached heat insulator up to the bottom of the indoor unit, leaving no gaps.

• Cover the drain pipe seamlessly with a locally procured heat insulator, ensuring 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.

Follow these requirements for the refrigerant piping of your TOSHIBA MMU-UP0151MHP-E.

Pipe Material and Size:

• Material: Seamless phosphorous de-oxidized copper pipe.

• Wall Thickness: 6.35, 9.52, and 12.7 mm pipes should have a wall thickness of 0.8 mm or more. 15.88 mm pipes should have a wall thickness of 1.0 mm or more.

• Pipe Size for MMU-UP0151MHP-E and UP0181MHP-E models:

• Gas side: 12.7 mm

• Liquid side: 6.4 mm

Flaring:

1. Cut the pipe with a pipe cutter and completely remove any burrs.

2. Insert a flare nut (provided with the unit or one specified for R32/R410A) into the pipe, and flare the pipe. The flaring dimensions for R32/R410A are different from those for R22 refrigerant.

Projection Margin in Flaring (Unit: mm)

Flaring Diameter Size (Unit: mm)

Connecting and Tightening:

• Use two wrenches (a double spanner) to connect the indoor unit pipe.

• Use a torque wrench to tighten the flare pipe connections to the specified torque. Incorrect connections can cause gas leaks and refrigeration cycle trouble.

Tightening Torque Levels

WARNING: Failure to follow these instructions can result in electric shock, fire, or other serious trouble.

• Use the specified wires for wiring and connect them securely to the terminals.

• Connect the earth wire (grounding work). Do not connect earth wires to gas pipes, water pipes, lightning conductors, or telephone earth wires.

• The appliance must be installed in accordance with national wiring regulations.

CAUTION:

• For the communication line, use wires of the same type and size to avoid communication trouble.

• Install an earth leakage breaker that is not tripped by shock waves.

• Use the cord clamps attached to the product.

• Do not damage or scratch the wires when peeling them.

• Perform the electric wiring so that it does not come into contact with the high-temperature part of the pipe.

Indoor Unit Power Supply and Wiring Specifications:

• The indoor unit requires its own exclusive power supply, separate from the outdoor unit.

• The power supply, circuit breaker, and main switch of the indoor unit should be connected to the same outdoor unit so they are commonly used together.

• Power supply wire specification: Cable 3-core 2.5 mm², in conformity with Design 60245 IEC 57.

• Do not turn on the power to the indoor unit until the vacuuming of the refrigerant pipes is complete.

Follow these steps to correctly connect the wiring to the indoor unit’s electrical control box:

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. Make sure to connect wires matching the terminal numbers (L, N, U1, U2, A, B).

3. Tighten the screws of the terminal block securely.

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

5. Mount the cover of the electrical control box, ensuring no wires are pinched. Mount the cover after wiring on the ceiling panel.

Remote Controller Wiring:

• For remote controller wiring, strip off approx. 9 mm of the wire to be connected.

• Connect the remote controller wire (Field supply) to the A and B terminals on the indoor unit’s terminal block and the corresponding A and B terminals on the remote controller unit.

Use the following basic procedure to change settings such as high ceiling, filter sign lighting time, heating temperature shift, and swing type. Always stop the air conditioner before making settings.

1. Push and hold the menu button and the [✔] setting button simultaneously for 10 seconds or more. The display will start to flash.

2. Each time the [▽] or [▲] setting button is pushed, the indoor unit numbers in the group control change. Select the indoor unit you want 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. (e.g., [5d] for high ceiling) with the [▽] or [▲] setting button.

5. Push the menu button again to make the Set data flash. Change the Set data (e.g., [0001] for High ceiling 1) with the [▽] or [▲] setting button.

6. Push the OFF timer button to complete the setup for that code.

7. When all settings have been completed, push the ON/OFF button to determine the settings. “SETTING” will flash, the display will return to normal, and the air conditioner will enter the normal stop mode.

CAUTION: Set only the Code Nos. shown in the manual. Setting an unlisted Code No. may cause the air conditioner to malfunction.

To change settings, follow the “Basic procedure” for using the wired remote controller. You will need to specify the correct CODE No. in step 4 and the desired SET DATA in step 5.

To Change Filter Sign Lighting Time (CODE No. [01]):

To Secure Better Heating Effect (CODE No. [06]):

This raises the detection temperature for heating. Also consider using a circulator to circulate heat air near the ceiling.

To Set Up Swing Type (CODE No. [F0]):

To Set Up Louver Lock (No Swing) (CODE No. [F1], [F2], [F3], or [F4] for each louver):

This locks the position of individual louvers. Select the desired position using SET DATA 0001 to 0005. To cancel, set the wind direction to “0000”.

To Select Horizontal Wind Direction (CODE No. [45]):

Before starting a test run, ensure the outdoor unit valve is fully open and power has been ON for 12 hours or more to protect the compressor.

Using a Wired Remote Controller:

1. Stop the air conditioner.

2. Push and hold the OFF timer button and the [▲] setting button simultaneously for 10 seconds or more. [TEST] will be displayed.

3. Push the ON/OFF button to start.

4. Push the menu button to select the operation mode, either [Cool] or [Heat].

5. The test run will run for 60 minutes before returning to the usual operation. The temperature setting function does not work during the test run.

6. After the test run, push the OFF timer button to stop. [TEST] will disappear from the display.

Using a Wireless Remote Controller:

1. Turn on the power to the air conditioner and wait for the remote controller to become available (approx. 5 minutes for first-time power-on, 1 minute for subsequent power-on).

2. Push the ON/OFF button, select [Cool] or [Heat] with the MODE button, and select [HIGH] with the FAN button.

3. For Cooling Test Run: Set the temperature to 17°C.

For Heating Test Run: Set the temperature to 30°C.

4. After confirming the “beep” sound, immediately change the temperature (18°C for cooling, 29°C for heating).

5. After another “beep” sound, immediately change the temperature back (17°C for cooling, 30°C for heating).

6. Repeat steps 4 and 5. The “Operation,” “Timer,” and “Ready” indicators on the wireless receiver will flash, and the test run will start.

7. Upon completion, push the ON/OFF button to stop the operation.

Follow these steps for daily maintenance to clean the air filter:

1. Turn off power: Turn off the air conditioner and set the circuit breaker to OFF.

2. Open the air intake grille:

1) Loosen the fixing screw.

2) Slide the fixing bracket toward the inside.

3) Holding the air intake grille, slide the hook and slowly open the grille.

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

4. Clean the filter: Clean the filter with a vacuum cleaner or by washing with water.

• If the dirt is heavy, use tepid water with a neutral detergent.

• After cleaning with water, dry the filter completely in a shaded place.

5. Mount the air filter: Re-install the cleaned and dried air filter.

6. Close the air intake grille: Close the grille in the reverse order of opening. Ensure the fall-preventive strap is attached to the panel, and firmly attach the hook, fixing bracket, and fixing screw.

7. Restore power: Set the circuit breaker back to ON.

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

For efficient operation and environmental conservation, it is strongly recommended that the indoor and outdoor units be cleaned and maintained regularly. Periodic maintenance (once a year) is recommended for long-term operation. If an indoor unit is operated for 8 hours or more daily, cleaning should be done at least once every 3 months. This work should be performed by a professional.

The following table lists the maintenance checks that should be performed:

If a problem occurs, you can check the troubleshooting history (up to 4 incidents) using the following procedure. This can be done during operation or when the unit is stopped.

1. Push the OFF timer button for over 10 seconds. The indicators will show that you have entered the troubleshooting history mode.

• The temperature indicator will show the order of the history, starting from [01] (newest).

• The OFF timer indicator will alternately show the [check code] and the [indoor Unit No.] in which the problem occurred.

2. Each time you push the setting button ([▲] or [▽]), the recorded troubleshooting history will be 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 this will delete the entire troubleshooting history of the indoor unit.

If your TOSHIBA MMU-UP0151MHP-E encounters a problem, it will display a check code. You can identify the issue using the list below. The wireless remote controller receiver unit will indicate the error with a pattern of flashing LEDs (Operation, Timer, Ready).

Legend for Wireless Remote Controller Display: ●: On, ○: Flashing, (Blank): Off, ALT: Alternating Flash, SIM: Simultaneous Flash

A notice code is a function for TU2C-Link communication that indicates a condition requiring caution or maintenance. A spanner mark will appear on the wired remote controller. The air conditioner can continue to operate normally while a notice code is displayed. You can check the code number using the following procedure:

1. Stop the operation of the air conditioner.

2. Push the Menu button and OFF timer button at the same time for 10 seconds or more.

3. The indoor unit number is displayed. Change it with the [▽] [▲] setting button and push the OFF timer button to confirm.

4. The history number is displayed in the center of the screen, and the Notice code No. is displayed in the lower left. You can switch the history with the setting button (a maximum of 5 notice codes).

5. Push the ON / OFF button to return to the operation stop screen.

Yes, existing R22 and R410A piping can be reused for inverter R32 product installations like the TOSHIBA MMU-UP0151MHP-E, but only if specific conditions are met.

WARNING: You must confirm the existence of any scratches or dents on the existing pipes and confirm the reliability of the pipe strength. If specified conditions can be cleared, it is possible to update existing pipes.

Basic Conditions for Reuse:

1. Dry: There must be no moisture inside the pipes.

2. Clean: There must be no dust inside the pipes.

3. Tight: There must be no refrigerant leaks.

Restrictions (Do NOT reuse pipes in these cases):

• When a scratch or dent is heavy.

• When the existing pipe thickness is thinner than the specified thickness for R32/R410A. The operating pressure is higher, and a thinner or damaged pipe may break.

• When the outdoor unit was left with pipes disconnected, or gas leaked without repair (moisture or air may have entered).

• When refrigerant cannot be recovered using a recovery unit (dirty oil or moisture may remain).

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

• When the oil from the old system is clearly different from normal oil (e.g., green color, large quantity of residue, bad smell).

• When the previous air conditioner had a compressor failure and was replaced.

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