TOSHIBA MMY-MUP0721FT6P-UL Air Conditioner Multi Type Instruction Manual

MMY-MUP0721FT6P-UL Air Conditioner Multi Type

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, follow the Installation Manual attached to the indoor unit.

ADOPTION OF R410A REFRIGERANT
This Air Conditioner uses R410A an environmentally friendly refrigerant.
Installing, starting up, and servicing air–conditioning equipment can be hazardous due to system pressures, electrical components, and equipment location (roofs, elevated structures, etc.). Only trained, qualified installers and service mechanics should install, start–up, and service this equipment. Untrained personnel can perform basic maintenance functions such as replace the indoor unit air fi lter. All other operations should be performed by trained service personnel.
Before working on the equipment, observe precautions in the literature and on tags, stickers, and labels attached to the equipment.
Follow all safety codes. Wear safety glasses and work gloves. Keep a quenching cloth and a fire extinguisher nearby during brazing. Use care in handling, rigging, and setting bulky equipment. Read these instructions thoroughly and follow all warnings or cautions included in literature and attached to the unit. Consult a local building codes and National Electrical Code (NEC) for special requirements. Recognize safety information. This is the safety–alert symbol . When you see this symbol on the unit and in instructions or manuals, be alert to the potential for personal injury. Understand these signal words: DANGER, WARNING, and CAUTION. These words are used with the safety–alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies hazards which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.
The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.

Precautions for safety

The manufacturer shall not assume any liability for the damage caused by not observing the description of this manual.
WARNING
General

• Carefully read Owner’s Manual before starting the air conditioner. There are many important things to keep in mind for daily operation.

• Ask for installation to be performed by the dealer or a professional. Only a qualified installer is able to install an air conditioner. If a non-qualifi ed person installs an air conditioner, it may result in problems such as fire, electric shock, injury, water leakage, noise and vibration.

• 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.

• Before opening the service panel of the outdoor unit, set the circuit breaker to the OFF position. Failure to set the circuit breaker to the OFF position may result in electric shocks through contact with the interior parts.

• Before carrying out the installation, maintenance, repair or removal work, be sure to set the circuit breakers for both the indoor and outdoor units to the OFF position. Otherwise, electric shock may result.

• Wear protective gloves and safety work clothing during installation, servicing and removal.

• Do not touch the aluminium fin of the outdoor unit. You may injure yourself if you do so. If the fin must be touched for some reason, first put on protective gloves and safety work clothing, and then proceed.

• 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.

• Before cleaning the filter or other parts of the outdoor unit, set the circuit breaker to OFF without fail, and place a “Work in progress” sign near the circuit breaker before proceeding with the work.

• The refrigerant used by this air conditioner is the R410A.

• The air conditioner must be transported in stable condition.
  If any part of the product are broken, contact your distributor.

• We do not take any responsibility on the local design.

Selection of installation location

• Do not install in a location where flammable gas leaks are possible. If the gas should leak and accumulate around the unit, it may ignite and cause a fire.
• During transporting the air conditioner, wear shoes with protective toe caps, protective gloves, and other protective clothing.
• To transport the air conditioner, do not take hold of the bands around the packing carton. You may injure yourself if the bands should break.
• Places where the operation sound of the outdoor unit may cause a disturbance. (Especially at the boundary line with a neighbour, install the air conditioner while considering the noise.)

Installation

• The designated bolts (M12) and nuts (M12) for securing the outdoor unit must be used when installing the unit.
• Install the outdoor unit property in a location that is durable enough to support the weight of the outdoor unit. Insuffi cient durability may cause the outdoor unit to fall, which may result in injury.
• Install the unit in the prescribed manner for protection against strong wind and earthquake. Incorrect installation may result in the unit falling down, or other accidents.
• Fix the screws back which have been removed for installation or other purposes.

Refrigerant piping

• Install the refrigerant pipe securely during the installation work before operating the air conditioner. If the compressor is operated with the valve open and without refrigerant pipe, the compressor sucks air and the refrigeration cycles is over pressurized, which may cause a injury.
• Tighten the flare nut with a torque wrench in the specified manner. Excessive tighten of the flare nut may cause a crack in the flare nut after a long period, which may result in refrigerant leakage.
• When the air conditioner has been installed or relocated, follow the instructions in the Installation Manual and purge the air completely so that no gases other than the refrigerant will be mixed in the refrigerating cycle. Failure to purge the air completely may cause the air conditioner to malfunction.
• Nitrogen gas must be used for the airtight test.

Electrical wiring

• Only a certified installer or qualified service person is allowed to carry out the electrical work of the air conditioner.

• When connecting the electrical wires, repairing the electrical parts or undertaking other electrical jobs, wear gloves to provide protection for electricians and from heat, insulating shoes and clothing to provide protection from electric shocks.
  Failure to wear this protective gear may result in electric shocks.

• When executing address setting, test run, or troubleshooting through the checking window on the electric parts box, put on insulated heat-proof gloves, insulated shoes and other clothing to provide protection from electric shock. Otherwise you may receive
  an electric shock.

• Use wiring that meets the specifications in the Installation Manual, NEC and the local codes.

• Check that the product is properly grounded.

• Do not connect the ground line to a gas pipe, water pipe, lightning conductor, or a telephone ground line.

• After completing the repair or relocation work, check that the ground wires are connected properly.

• Install a circuit breaker that meets the specifications in the Installation Manual, NEC and local codes.

• Under no circumstances must the power cable be extended.
  Connection trouble in the places where the cable is extended may give rise to smoking and/or a fire.

• Do not supply power from the power terminal block equipped on the outdoor unit to another outdoor unit. Capacity overflow may occur on the terminal block and may result in fire.

• Each outdoor unit should have its own power supply.

Test run

• Before operating the air conditioner after having completed the work, check that the electrical parts box cover of the indoor unit and service panel of the outdoor unit are closed, and set the circuit breaker to the ON position. You may receive an electric shock if the power is turned on without first conducting these checks.

• If there is any kind of trouble (such as when a check code display has appeared, there is a smell of burning, abnormal sounds are heard, the air conditioner fails to cool or heat or water is leaking) has occurred in the air conditioner, do not touch the air conditioner yourself but set the circuit breaker to the OFF position, and contact a qualified service person.
  Take steps to ensure that the power will not be turned on (by marking “out of service” near the circuit breaker, for instance) until qualified service person arrives. Continuing to use the air conditioner in the trouble status may cause mechanical problems to escalate or result in electric shocks or other failure.

• Upon completion of the installation work, check for refrigerant leaks and check the insulation resistance and water drainage. Then conduct a test run to check that the air conditioner is operating properly.

Explanations given to user

• Upon completion of the installation work, tell the user where the circuit breaker is located. If the user does not know where the circuit breaker is, he or she will not be able to turn it off in the event that trouble has occurred in the air conditioner.
• If the fan grille is damaged, do not approach the outdoor unit but set the circuit breaker to the OFF position, and contact a qualified service person to have the repairs done. Do not set the circuit breaker to the ON position until the repairs are completed.
• After the installation work, follow the Owner’s Manual to explain to the customer how to use and maintain the unit.

Relocation

• Only a certified installer or service person is allowed to relocate the air conditioner.

• When the pump-down work is carried out shut down the compressor before disconnecting the refrigerant pipe.
  Disconnecting the refrigerant pipe with the service valve left open and the compressor still operating will cause air or other gas to be sucked in, raising the pressure inside the refrigeration cycle to an abnormally high level, and possibly resulting in rupture, injury or other trouble.

• Do not recover the refrigerant into the outdoor unit. Use a refrigerant recovery machine to recover the refrigerant after moving or repairing. It is impossible to recover the refrigerant into the outdoor unit. Refrigerant recovery into the outdoor unit may result in serious accidents such as explosion of the unit, injury or other accidents.

CAUTION
R410A refrigerant air conditioner installation

• This air conditioner adopts the HFC refrigerant (R410A) which does not destroy ozone layer.

• The characteristics of R410A refrigerant are; easy to absorb water, oxidizing membrane or oil, and its pressure is approx. 1.6 times higher than that of refrigerant R22. Accompanied with the R410A refrigerant, refrigerating oil has also been changed.
  Therefore, during installation work, be sure that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle.

• To prevent charging an incorrect refrigerant and refrigerating oil, the sizes of connecting sections of charging port of the main unit and installation tools are changed from those for the conventional refrigerant.

• Accordingly the exclusive tools are required for the R410A refrigerant.

• For connecting pipes, use new and clean piping designed for R410A, and please care so that water or dust does not enter.
  Do not wash air conditioners with pressure washers.

• Electric leaks may cause electric shocks or fires.

Accessory part

Installation of R410A refrigerant air conditioner

This air conditioner adopts the R410A refrigerant which does not deplete the ozone layer.

• R410A refrigerant is vulnerable to impurities such as water, oxidizing membranes, or oils because the pressure of R410A refrigerant is higher than that of the former refrigerant by approximately 1.6 times.
  As well as the adoption of the R410A refrigerant, the refrigerating oil has been also changed. Therefore, pay attention so that water, dust, former refrigerant, or refrigerating oil does not enter the refrigerating cycle of the R410A refrigerant air conditioner during installation.

• To prevent mixing of refrigerant or refrigerating oil, the size of the charge port of the main unit or connecting section of the installation tool differs to that of an air conditioner for the former refrigerant.
  Accordingly, exclusive tools are required for the R410A refrigerant as shown below.

• For connecting pipes, use new and clean piping materials so that water or dust does not enter.

Required tools and cautions on handling
It is necessary to prepare the tools and parts for installation as described below. The tools and parts which will be newly prepared in the following items should be restricted to exclusive use.
Explanation of symbols
: Newly prepared (It is necessary to use it exclusively with R410A, separately from those for R22 or R407C.)
: Former tool is available.

Exclusive to R410A
Charging hose| Exclusive to R410A
Charging cylinder| Charging refrigerant| Unusable (Use the Refrigerant charging balance.)
Gas leak detector| Checking gas leak| Exclusive to R410A
Vacuum pump| Vacuum drying| Usable if a counter-flow preventive adapter is attached
Vacuum pump with counterflow| Vacuum drying| R22 (Existing article)
Flare tool| Flare processing of pipes| Usable by adjusting size
Bender| Bending processing of pipes| R22 (Existing article)
Refrigerant recovery device| Recovering refrigerant| Exclusive to R410A
Pipe cutter| Cutting pipes| R22 (Existing article)
Refrigerant canister| Charging refrigerant| Exclusive to R410A
Enter the refrigerate name for identification
Brazing machine/Nitrogen gas cylinder| Brazing of pipes| R22 (Existing article)
Refrigerant charging balance| Charging refrigerant|  R22 (Existing article)

Selection of installation place

Upon customer’s approval, install the air conditioner in a place which satisfies the following conditions:

• Place where it can be installed horizontally.
• Place which can reserve a sufficient service space for safe maintenance or checks.
• Place where there is no problem even if the drained water overflows.

Avoid the following places:

• Salty places (seaside area) or places with much gas sulfide (hot spring area) (If selecting such a place, special maintenance is required.)
• Places where oil (including machine oil), steam, oil smoke or corrosive gas is generated.
• 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.
• Places where an organic solvent is used.
• Chemical plants with a cooling system using liquid carbon dioxide.
• Places where a device generating high frequency (inverter, non-utility generator, medical apparatus, or communication equipment) is set. (Malfunction or abnormal control of the air conditioner, or interference to devices listed above may occur.)
• Places where discharged air from the outdoor unit blows against the windows of a neighbour’s house.
• Places unable to bear the weight of the unit.
• Places with poor ventilation.

Installation space
Leave space necessary for running, installation and servicing.

NOTE

• If there is an obstacle above the outdoor unit, leave a space of 78.7″ (2000 mm) or more from the top of the outdoor unit.
• When the obstacle height in front side exceeds 59.1″ (1500 mm), take a space of 19.7″ (500 mm) or more plus half length of the portion (H1) exceeding 59.1″ (1500 mm) between the outdoor unit and the obstacle. (19.7″ (500 mm) + H1/2)
• When the obstacle height in front side exceeds 98.4″ (2500 mm), the outdoor unit should be installed with at least 39.4″ (1000 mm) space between the outdoor unit and the obstacle.
• When the obstacle height in back side exceeds 19.7″ (500 mm), take a space of 11.8″ (300 mm) or more plus half length of the portion (H2) exceeding 19.7″ (500 mm) between the outdoor unit and the obstacle. (11.8″ (300 mm) + H2/2)
• When the obstacle height in back side exceeds 74.8″ (1900 mm), the outdoor unit should be installed with at least 39.4″ (1000 mm) space between the outdoor unit and the obstacle.
• When attaching a snowfall-hood take a space for the unit height plus the snowfall-hood height.

▼ Combination of outdoor units

Ton| Model name (Standard)| Unit 1| Unit 2| Unit 3
---|---|---|---|---
6| MMY-MUP0721F✱| MMY-MUP0721F✱| –| –
8| MMY-MUP0961F✱| MMY-MUP0961F✱| –| –
10| MMY-MUP1201F✱| MMY-MUP1201F✱| –| –
12| MMY-MUP1441F✱| MMY-MUP1441F✱| –| –
14| MMY-MUP1681F✱| MMY-MUP1681F✱| –| –
16*1| MMY-MUP1921F✱| MMY-MUP1921F✱| –| –
16| MMY-UP1921F✱| MMY-MUP0961F✱| MMY-MUP0961F✱| –
18| MMY-UP2161F✱| MMY-MUP1441F✱| MMY-MUP0721F✱| –
20| MMY-UP2401F✱| MMY-MUP1441F✱| MMY-MUP0961F✱| –
22| MMY-UP2641F✱| MMY-MUP1681F✱| MMY-MUP0961F✱| –
24| MMY-UP2881F✱| MMY-MUP1441F✱| MMY-MUP1441F✱| –
26| MMY-UP3121F✱| MMY-MUP1681F✱| MMY-MUP1441F✱| –
28| MMY-UP3361F✱| MMY-MUP1681F✱| MMY-MUP1681F✱| –
30| MMY-UP3601F✱| MMY-MUP1681F✱| MMY-MUP0961F✱| MMY-MUP0961F✱
32| MMY-UP3841F✱| MMY-MUP1441F✱| MMY-MUP1441F✱| MMY-MUP0961F✱
34| MMY-UP4081F✱| MMY-MUP1681F✱| MMY-MUP1441F✱| MMY-MUP0961F✱
36| MMY-UP4321F✱| MMY-MUP1681F✱| MMY-MUP1681F✱| MMY-MUP0961F✱
38| MMY-UP4561F✱| MMY-MUP1681F✱| MMY-MUP1441F✱| MMY-MUP1441F✱
40| MMY-UP4801F✱| MMY-MUP1681F✱| MMY-MUP1681F✱| MMY-MUP1441F✱
42| MMY-UP5041F✱| MMY-MUP1681F✱| MMY-MUP1681F✱| MMY-MUP1681F✱

*1 : 460 V model only lineup

Ton| Model name (High heat)| Unit 1| Unit 2| Unit 3
---|---|---|---|---
6| MMY-MUP072H1F✱| MMY-MUP072H1F✱| –| –
8| MMY-MUP096H1F✱| MMY-MUP096H1F✱| –| –
10| MMY-MUP120H1F✱| MMY-MUP120H1F✱| –| –
12| MMY-UP144H1F✱| MMY-MUP072H1F✱| MMY-MUP072H1F✱| –
16| MMY-UP192H1F✱| MMY-MUP096H1F✱| MMY-MUP096H1F✱| –
20| MMY-UP240H1F✱| MMY-MUP120H1F✱| MMY-MUP120H1F✱| –
24| MMY-UP288H1F✱| MMY-MUP096H1F✱| MMY-MUP096H1F✱| MMY-MUP096H1F✱
30| MMY-UP360H1F✱| MMY-MUP120H1F✱| MMY-MUP120H1F✱| MMY-MUP120H1F✱

Carrying in the outdoor unit

CAUTION
Handle the outdoor unit carefully, observing the following items.

• When using a forklift truck or other machinery for loading/unloading in transportation, insert the fork of the forklift truck into the rectangular holes for handling as shown below.
• When lifting up the unit, insert a rope able to bear the unit’s weight into the rectangular holes for handling, and tie the unit from 4 sides.
  (Apply padding in positions where the rope comes into contact with the outdoor unit so that no damage is caused to the outer surface of the outdoor unit.)
  (There are reinforcing plates on the side surfaces, so the rope cannot be passed through.)

Weight centre and weight
Weight center of an outdoor unit

▼ Weight centre and weight
460 V

Type| Model| X in. (mm)| Y in. (mm)| Z in. (mm)| Weight lbs (kg)
---|---|---|---|---|---
A| Standard| 6 ton| MMY-MUP0721FT6P-UL| 21.3 (540)| 16.1 (410)| 45.7 (1160)| 552 (250)
Standard| 8 ton| MMY-MUP0961FT6P-UL
High heat| 6 ton| MMY-MUP072H1FT6PUL
B| Standard| 10 ton| MMY-MUP1201FT6P-UL| 25.3 (642)| 12.6 (320)| 50.6 (1284)| 686 (311)
Standard| 12 ton| MMY-MUP1441FT6P-UL| 25.8 (655)| 12.4 (315)| 30.9 (785)| 776 (352)
Standard| 14 ton| MMY-MUP1681FT6P-UL
High heat| 8 ton| MMY-MUP096H1FT6PUL
High heat| 10 ton| MMY-MUP120H1FT6PUL
Standard| 16 ton| MMY-MUP1921FT6P-UL| 24.6 (625)| 15.6 (395)| 41.7 (1060)| 829 (376)

208-230 V

Type| Model| X in. (mm)| Y in. (mm)| Z in. (mm)| Weight lbs (kg)
---|---|---|---|---|---
A| Standard| 6 ton| MMY-MUP0721FT9P-UL| 20.5 (520)| 12.0 (305)| 40.6 (1030)| 532 (241)
Standard| 8 ton| MMY-MUP0961FT9P-UL
High heat| 6 ton| MMY-MUP072H1FT9PUL
B| Standard| 10 ton| MMY-MUP1201FT9P-UL| 24.8 (630)| 15.9 (405)| 31.1 (790)| 675 (306)
Standard| 12 ton| MMY-MUP1441FT9P-UL| 24.6 (625)| 15.4 (390)| 35.2 (895)| 783 (355)
Standard| 14 ton| MMY-MUP1681FT9P-UL
High heat| 8 ton| MMY-MUP096H1FT9PUL
High heat| 10 ton| MMY-MUP120H1FT9PUL

Installation of the outdoor unit

WARNING

• Be sure to install the outdoor unit in a place able to bear its weight.
  If strength is insufficient, the unit may fall down resulting in human injury.

• Perform specified installation work to protect against strong wind and earthquakes.
  If the outdoor unit is imperfectly installed, an accident by falling or dropping may be caused.

CAUTION

• Drain water is discharged from the outdoor unit. (Especially while heating)
  Install the outdoor unit in a place with good drainage.

• For installation, be careful of the strength and level of the foundation so that abnormal sounds (vibration or noise) are not generated.

REQUIREMENT
Installation in a snowfall area

1. Install the outdoor unit on a higher foundation than the snowfall or set up a stand to install the unit so that snowfall will not affect the unit.
   ● Set up a stand higher than the snowfall.
   ● Apply an angled structure to the stand so that drainage will not be prevented. (Avoid using a stand with a flat surface.)

2. Mount a snowfall-hood into the air intake and the air discharge.
   ● If attaching a snowfall-hood, remove the fin guard, as snow may accumulate in the exchanger.
   ● Leave enough space for the snowfall-hood so that it will not be an obstacle for the air intake and the air discharge.
   ● In areas with ambience temperature is between -13°F (-25°C) ~ -30°F (-34.4°C), install the snowfall-hood on the outdoor unit.
   ● -13°F (-25°C) ~ -30°F (-34.4°C) & Heavy snowfall area, mount a snowfall-hood each outdoor unit.

1.  To install multiple outdoor units, arrange them with 7.9″ (200 mm) (recommendation, at least 0.8″ (20 mm)) or more spaces in between.
   Fix each outdoor unit with M12 anchor bolts at 4 positions. 0.8″ (20 mm) projection is appropriate for an anchor bolt.● For the same refrigerant piping groupLow ambient temperature in area| L
   ---|---
   32°F (0°C) ~ 5°F (-15°C)| 7.9″ (200 mm), at least 0.8″ (20 mm) or more.
   5°F (-15°C) ~ -30°F (-34.4°C)| 7.9″ (200 mm) or more.
   *5°F (-15°C) ~ -13°F (-25°C) : With outdoor unit function code setting (O.DN : 058 / Setting value : 2), Available at least 0.8″ (20 mm) or more.
   Setting is required for each outdoor unit of the same refrigerant piping group.
   For details on how to set the O.DN, see 11 Applicable control settings.

● For other refrigerant piping groups, keep at least 7.9″ (200 mm) apart.
● Anchor bolt positions are as shown below:

2. When drawing out the refrigerant pipe from the underside, set the height of the stand to 19.7″ (500 mm) or more.
3. Do not use 4 stands on the corner to support the outdoor unit.
4. Mount the vibration-proof rubber (including vibration-proof blocks) so that it fits under the whole clamping leg.
5. Be careful of the connecting arrangement of the header unit and follower units. Set the outdoor units in order of capacity from the one with the largest capacity. (A (Header unit) B C)

• Be sure to use a header unit for the leading outdoor unit to be connected to the main pipe. (Figure 1 and 3).
• Be sure to use a outdoor unit connection piping kit (RBM-BT14FUL/RBM-BT24FUL : separately purchased) to connect each outdoor unit.
• Be careful of the direction of the Outdoor unit connection piping kit for the liquid side. (As shown in Figure 2, a
  Outdoor unit connection piping kit cannot be attached so that the refrigerant of the main pipe flows directly into the header unit.)

Discharge gas / Liquid pipes

Suction gas

• When attaching a Y-shaped branching joint for the gas side, attach it level with the ground (Be sure not to exceed ±15 degrees.). Regarding a T-shape branching joint for the liquid side, there is no restriction for its angle.

At a level position

• In case of using the Y-shaped branching joint for connecting between outdoor units (Discharge gas joint and Suction gas joint), please keep the straight part of at least 19.7″ (500 mm) at the inlet.

When drawing pipes downward

• Adding only one follower unit is possible. Install the additional unit so that its position is opposite to the header unit. Use an extension valve for installation (See the figure above.).
  Specify the pipe diameter in advance to allow for adding another unit.

Refrigerant piping

WARNING

• If the refrigerant gas leaks during installation, ventilate the room.
  If the leaked refrigerant gas comes into contact with fire, noxious gas may be generated.

• After installation, check that the refrigerant gas does not leak.
  If the refrigerant gas leaks into the room and comes into contact with fire such as a fan heater, stove, or kitchen range, noxious gas may be generated.

Connection of refrigerant pipe

• The refrigerant pipe connecting section is set in the outdoor unit. Remove the front panel and the piping/ wiring panel. (M5: 8 pcs.)
  As shown in the illustration on the right, the hooks are at the right and left sides of the front panel. Lift up and remove the front panel.

• Pipes can be drawn out forward or downward from the outdoor unit.

• When drawing out the pipe forward, draw it out to the outside via the piping/wiring panel, and leave a space of 19.7″ (500 mm) or more from the main pipe connecting the outdoor unit with the indoor unit, considering service work or other work on the unit. (For replacing the compressor, 19.7″ (500 mm) or more space is required.)

• When drawing out the pipe downward, remove the knockouts on the base plate of the outdoor unit, draw the pipes out of the outdoor unit, and perform piping on the right/left or rear side.
  Do not apply any load to the pipes.

REQUIREMENT

• For a welding work of the refrigerant pipes, be sure to use nitrogen gas in order to prevent oxidation of the inside of the pipes; otherwise clogging of the refrigerating cycle due to oxidized scale may occur.
• Use clean and new pipes for the refrigerant pipes and perform piping work so that water or dust does not contaminate the refrigerant.

Pipe connection method of valve (Example)
[(A) Valve side piping diameter→(B)Main piping diameter]

Model name| Liquid side ([in.] mm)| HP/LP gas side ([in.] mm)| Suction gas side ([in.] mm)
---|---|---|---
MMY-MUP0721F| [1/2″]Ø12.7→[1/2″]Ø12.7| [3/4″]Ø19.1→[3/4″]Ø19.1| [8/8″]Ø25.4→[3/4″]Ø19.1
MMY-MUP0961F| [1/2″]Ø12.7→[1/2″]Ø12.7| [3/4″]Ø19.1→[3/4″]Ø19.1| [8/8″]Ø25.4→[7/8″]Ø22.2
MMY-MUP1201F| [5/8″]Ø15.9→[1/2″]Ø12.7| [3/4″]Ø19.1→[3/4″]Ø19.1| [8/8″]Ø25.4→[1-1/8″]Ø28.6
MMY-MUP1441F| [5/8″]Ø15.9→[5/8″]Ø15.9| [3/4″]Ø19.1→[7/8″]Ø22.2| [8/8″]Ø25.4→[1-1/8″]Ø28.6
MMY-MUP1681F| [5/8″]Ø15.9→[5/8″]Ø15.9| [3/4″]Ø19.1→[7/8″]Ø22.2| [8/8″]Ø25.4→[1-1/8″]Ø28.6
MMY-MUP1921F| [5/8″]Ø15.9→[5/8″]Ø15.9| [3/4″]Ø19.1→[7/8″]Ø22.2| [8/8″]Ø25.4→[1-1/8″]Ø28.6
MMY-MUP072H1F| [1/2″]Ø12.7→[1/2″]Ø12.7| [3/4″]Ø19.1→[3/4″]Ø19.1| [8/8″]Ø25.4→[3/4″]Ø19.1
MMY-MUP096H1F| [5/8″]Ø15.9→[1/2″]Ø12.7| [3/4″]Ø19.1→[3/4″]Ø19.1| [8/8″]Ø25.4→[7/8″]Ø22.2
MMY-MUP120H1F| [5/8″]Ø15.9→[1/2″]Ø12.7| [3/4″]Ø19.1→[3/4″]Ø19.1| [8/8″]Ø25.4→[1-1/8″]Ø28.6

• Even when the piping connection diameter on the outdoor unit side differs from the main piping diameter, prepare and use socket procured locally with a different diameter.

CAUTION
Wrap all the valves in wet cloth to keep them cool and prevent the heat from the torch from damaging it when connecting the pipe to all the valves.

Coupling size of brazed pipe

Selection of pipe materials and sizes
Selection of pipe materials
Materials : Phosphorus deoxidation seam-less pipe. Minimum wall thickness for R410A application.

Soft| Half hard or hard| OD (in)| OD (mm)| Minimum wall thickness in (mm)
---|---|---|---|---
| | 1/4″| 6.35| 0.031″ (0.80)
| | 3/8″| 9.52| 0.031″ (0.80)
| | 1/2″| 12.70| 0.031″ (0.80)
| | 5/8″| 15.88| 0.039″ (1.0)
| | 3/4″| 19.05| 0.039″ (1.0)
| | 7/8″| 22.22| 0.039″ (1.0)
| | 1-1/8″| 28.58| 0.039″ (1.0)
| | 1-3/8″| 34.92| 0.047″ (1.2)
| | 1-5/8″| 41.28| 0.057″ (1.45)

Capacity code of indoor and outdoor units

• For the indoor unit, the capacity code is decided at each capacity rank. (Table 1)
• The capacity codes of the outdoor units are decided at each capacity rank. The maximum number of connectable indoor units and the total value of capacity codes of the indoor units are also decided. (Table 2-1, Table 2-2)

NOTE
Compared with the capacity code of the outdoor unit, the total value of capacity codes of the connectable indoor units differs based on the height difference between the indoor units.

• When the height difference between the indoor units is 49 ft (15 m) or less: Up to 200% of the capacity code of the outdoor unit.
• When the height difference between the indoor units is over 49 ft (15 m): Up to 105% of the capacity code.
• If the system diversity is more than 135%, check the maximum number of indoor unit connections in table 2-2.

Table 1

Indoor unit capacity type| Indoor capacity code (Equivalent to capacity)
---|---
007 type| 7.5
009 type| 9.5
012 type| 12
015 type| 15.4
018 type| 18
021 type| 21
024 type| 24
027 type| 27
030 type| 30
036 type| 36
042 type| 42
048 type| 48
054 type| 54
072 type| 72
096 type| 96
120 type| 120

• For combination of the outdoor units, refer to “Combination of outdoor units”.
  Table 2-1 [Diversity: 135%]

| Model name (MMY-) Standard model| Outdoor unit capacity code Equivalent to capacity| Max. No. of indoor units| Total indoor units capacity code Equivalent to capacity| Diversity
---|---|---|---|---|---
6 ton| MUP0721✱| 72| 12| 97.2| 135%
8 ton| MUP0961✱| 96| 17| 129.6
10 ton| MUP1201✱| 120| 21| 162.0
12 ton| MUP1441✱| 144| 25| 194.4
14 ton| MUP1681✱| 168| 30| 226.8
16 ton| MUP1921✱| 192| 34| 259.2
16 ton| UP1921✱| 192| 34| 259.2
18 ton| UP2161✱| 216| 38| 291.6
20 ton| UP2401✱| 240| 43| 324.0
22 ton| UP2641✱| 264| 47| 356.4
24 ton| UP2881✱| 288| 51| 388.8
26 ton| UP3121✱| 312| 56| 421.2
28 ton| UP3361✱| 336| 60| 453.6
30 ton| UP3601✱| 360| 64| 486.0
32 ton| UP3841✱| 384| 69| 518.4
34 ton| UP4081✱| 408| 70| 550.8
36 ton| UP4321✱| 432| 72| 583.2
38 ton| UP4561✱| 456| 73| 615.6
40 ton| UP4801✱| 480| 74| 648.0
42 ton| UP5041✱| 504| 75| 680.4
| Model name (MMY-) High heat model| Outdoor unit capacity code Equivalent to capacity| Max. No. of indoor units| Total indoor units capacity code Equivalent to capacity| Diversity
---|---|---|---|---|---
6 ton| MUP072H1✱| 72| 12| 97.2| 135%
8 ton| MUP096H1✱| 96| 17| 129.6
10 ton| MUP120H1✱| 120| 21| 162.0
12 ton| UP144H1✱| 144| 25| 194.4
16 ton| UP192H1✱| 192| 34| 259.2
20 ton| UP240H1✱| 240| 43| 324.0
24 ton| UP288H1✱| 288| 51| 388.8
30 ton| UP360H1✱| 360| 64| 486.0

Table 2-2 [Diversity: 200%]

| Model name (MMY-) Standard model| Outdoor unit capacity code Equivalent to capacity| Max. No. of indoor units| Total indoor units capacity code Equivalent to capacity| Diversity
---|---|---|---|---|---
6 ton| MUP0721✱| 72| 11| 144.0| 200%
8 ton| MUP0961✱| 96| 15| 192.0
10 ton| MUP1201✱| 120| 19| 240.0
12 ton| MUP1441✱| 144| 22| 288.0
14 ton| MUP1681✱| 168| 27| 336.0
16 ton| MUP1921✱| 192| 30| 384.0
| Model name (MMY-) High heat model| Outdoor unit capacity code Equivalent to capacity| Max. No. of indoor units| Total indoor units capacity code Equivalent to capacity| Diversity
---|---|---|---|---|---
6 ton| MUP072H1✱| 72| 8| 144.0| 200%
8 ton| MUP096H1✱| 96| 11| 192.0
10 ton| MUP120H1✱| 120| 14| 240.0

■ Selection of pipe size

1. Outdoor unit connecting pipe (*11)
   Outdoor unit capacity type| Liquid side| HP/LP gas side| Suction gas side
   ---|---|---|---
   072 type| 1/2 in. (12.7 mm)| 3/4 in. (19.1 mm)| 3/4 in. (19.1 mm)
   096 type| 7/8 in. (22.2 mm)
   120 type| 1-1/8 in. (28.6 mm)
   144 type| 5/8 in. (15.9 mm)| 7/8 in. (22.2 mm)
   168 type
   192 type
2. Outdoor unit connection piping kit
   Total capacity code of outdoor units *at downstream side (1)| ****Model name**
   ---|---
   Below 247| RBM-BT14FUL
   247 or more| RBM-BT24FUL
3. Pipe between outdoor units (*11)
4. Main pipe (2) (11)
   Outdoor unit capacity type| Liquid side| HP/LP gas side| Suction gas side
   ---|---|---|---
   Standard size| *Refrigerant saving size (3) and Farthest pipe length**
   072 type| 1/2 in. (12.7 mm)| 3/8 in (9.6 mm)| 261 ft (90 m)| 3/4 in. (19.1 mm)| 3/4 in. (19.1 mm)
   096 type| 7/8 in. (22.2 mm)
   120 type| ―| 1-1/8 in. (28.6 mm)
   144, 168 type| 5/8 in. (15.9 mm)| 1/2 in. (12.7 mm)| 261 ft (90 m)| 7/8 in. (22.2 mm)
   192 type| ―
   216, 240 type| 3/4 in. (19.1 mm)| 5/8 in. (15.9 mm)| 261 ft (90 m)| 1-1/8 in. (28.6 mm)| 1-3/8 in. (34.9 mm)
   264 to 336 type| 7/8 in. (22.2 mm)| 3/4 in. (19.1 mm)| 261 ft (90 m)
   336 type or more| 1-3/8 in. (34.9 mm)| 1-5/8 in. (41.3 mm)
5. Branching pipe (8) (9) (*11)
   Total capacity code of indoor units *at downstream side (1)| Liquid side| HP/LP gas side| Suction gas side**
   ---|---|---|---
   Below 61| 3/8 in. (9.6 mm)| 1/2 in. (12.7mm)| 5/8 in. (15.9 mm)
   61 to below 116| 1/2 in (12.7 mm)| 3/4 in. (19.1 mm)| 7/8 in. (22.2 mm)
   116 to below 193| 5/8 in. (15.9 mm)| 7/8 in. (22.2 mm)| 1-1/8 in. (28.6 mm)
   193 to below 241| 3/4 in. (19.1 mm)| 1-1/8 in. (28.6 mm)| 1-3/8 in. (34.9 mm)
   241 to below 337| 7/8 in. (22.2 mm)
   337 or more| 1-3/8 in. (34.9 mm)| 1-5/8 in. (41.3 mm)
6. Indoor unit connecting pipe (*9)
   Indoor unit capacity type| Liquid side| Gas side| Real liquid side piping length
   ---|---|---|---
   007 to 012 type| 1/4 in. (6.4 mm)| 3/8 in. (9.6 mm)| 49 ft (15 m) or less
   3/8 in. (9.6 mm)| 1/2 in. (12.7 mm)| Exceeds 49 ft (15 m)
   015, 018 type| 1/4 in. (6.4 mm)| 1/2 in. (12.7 mm)| 49 ft (15 m) or less
   3/8 in. (9.6 mm)| 5/8 in. (15.9 mm)| Exceeds 49 ft (15 m)
   021 to 054 type| 3/8 in. (9.6 mm)| 5/8 in. (15.9 mm)|
   072, 096 type| 1/2 in. (12.7 mm)| 7/8 in. (22.2 mm)
7.  Y-shaped branching joint (4) (5)
   Total capacity code of indoor units| Model name
   ---|---
   For 3 piping| For 2 piping
   Below 61| RBM-BY55FUL| RBM-BY55UL
   61 to below 136| RBM-BY105FUL| RBM-BY105UL
   136 to below 241| RBM-BY205FUL| RBM-BY205UL
   241 or more| RBM-BY305FUL| RBM-BY305UL
8.  Branching header (4) (5) (6) (7)
   Number of branches| Total capacity code of indoor units| Model name
   ---|---|---
   For 3 piping| For 2 piping
   For 4 branching| Below 136| RBM-HY1043FUL| RBM-HY1043UL
   136 to below 241| RBM-HY2043FUL| RBM-HY2043UL
   For 8 branching| Below 136| RBM-HY1083FUL| RBM-HY1083UL
   136 to below 241| RBM-HY2083FUL| RBM-HY2083UL
9. Flow selector unit (*12)
   Port type| Total capacity code of indoor units| Model name| Number of branches
   ---|---|---|---
   Single port| Below 61| RBM-Y0611FUPUL| –
   61 to 96 or less| RBM-Y0961FUPUL| –
   Multi port| Below 244 (1 branch: below 61)| RBM-Y0611FU4PUL| 4
   Below 290 (1 branch: below 61)| RBM-Y0611FU8PUL| 8
   Below 290 (1 branch: below 61)| RBM-Y0611FU12PUL| 12

(1) : The downstream starting point is the main pipe.
(2) : Main pipe should be selected based on the capacity type of the outdoor unit.
(3) : When making the liquid pipe of the main pipe a refrigerant saving size, make height difference between indoor units smaller than 49 ft (15 m). In addition, the farthest real length pipe is also limited.
(4) : The branch pipe of the fi rst branch should be selected based on the capacity type of the outdoor unit.
(5) : Select according to the outdoor unit capacity code if the total of the indoor capacity codes exceeds the outdoor unit capacity code.
(6) : When a branch header is used for the fi rst branching of an outdoor unit with a capacity type of 120 (kBtu/h) or more and 241 (kBtu/h) or less, use RBM-HY2043FUL (4 branches) and RBM-HY2083FUL (8 branches) regardless of the total capacity code of the downstream indoor units. In addition,for outdoor units of 264 type or larger, the branching header cannot be used as the fi rst branch.
(7) : It is possible to select up to a maximum capacity code total 58 for each one branch of the branching header.
(8) : Use the same size as the main pipe if it is larger than the main pipe.
(9) : Since the liquid side pipe is not connected to the single port type FS unit, the pipe length is longer than the suction side gas pipe.
(10) : Use a suction gas pipe and a liquid pipe for the two pipes branching downstream from the fl ow selector unit and the dedicated cooling circuit.
(11) : If the pipe size is 3/4 in. or more, use a suitable material as detailed in the Installation Manual.
(12) : Please contact our sales representative when merging downstream piping of multi port type.

■ Allowable length of refrigerant pipes and allowable height difference between units (Heat pump)
◆ System restriction

Indoor unit connection rate (Varies depending on the height difference between indoor units.)| H2 ≤ 49 ft (15 m)| Single outdoor unit system : 200% of outdoor units’ capacity (*1)
Multiple outdoor units system : 135% of outdoor units’ capacity
H2 > 49 ft (15 m)| 105% of outdoor units’ capacity

(1*): If it exceeds 135%, there is a limit to the maximum number of indoor units that can be connected.

◆ Allowable length and allowable height difference of refrigerant pipe

L5 + L6 + L7 + L8 + L9 + L10 + L11 + L12 + L13 + L14 + a + b + c + d + e + f + g + h + i + j + k + l + m + n
Multiple outdoor unit system| 3937 (2)| 1200 (2)
Farthest pipe length L (1)| Equivalent length| 656| 200| Lc + LA + L1 + L3 + L13 + L14 + n
Real length| 591| 180
Max. length of main pipe L1| H2 ≤ 49 ft (15 m)| Equivalent length| 394| 120| L1
Reallength| 328| 100
H2 > 49 ft (15 m)| Equivalent length| 328| 100
Reallength| 279| 85
Equivalent length of farthest pipe from 1 st branching Li| H1 > 9.8 ft (3 m)| 164| 50| L3 + L13 + L14 + n
H1 ≤ 9.8 ft (3 m)| 213| 65
Equivalent length of farthest pipe between outdoor units LO| 49| 15| LA + Lb, LA + Lc
Equivalent length of outdoor unit connecting pipe| 33| 10| La, Lb, Lc
Max. real length of pipe from the end branch to the indoor unit| 164| 50| L4 + a, L5 + b, L6 + c, d, e, L10 + f
Max. equivalent length of pipe between branches| 164| 50| L2, L3, L4, L5, L6, L7, L8, L9, L10, L13
Max. real length of pipe from Flow selector unit to the indoor unit Ln| 115| 35| L11 + g, L11+ L12 + h, L11 + L12 + i, L14 + m, L14 + n, j, k , l, m, n
The total pipe length in one Multi port type Flow Selector unit (Real length of liquid pipe)| 4 branches (3)| 394| 120| L14 + j + k + l + m + n
8 or 12 branches (3)| 591| 180
Difference in height| Height difference between outdoor and indoor unit H1| H2 ≤ 9.8 ft (3 m)| Upper outdoor unit| 230| 70| ―
295 (4)| 90 (4)
Lower outdoor unit| 131| 40
H2 > 9.8 ft (3 m)| Upper outdoor unit| 164| 50
Lower outdoor unit| 131| 40
Height difference between indoor units H2| Connection ratio ≤ 105% (5)| Upper outdoor unit| 131| 40| ―
Lower outdoor unit| 98| 30
9.8 (6)| 3 (6)
Connection ratio > 105% (5)| Upper outdoor unit| 49| 15
Lower outdoor unit| 49| 15
9.8 (6)| 3 (*6)
Height difference between indoor units connected to the same flow selector unit H3| 49| 15| ―
Height difference between outdoor units H4| 16| 5| ―

(1) : (C) is outdoor unit furthest from the 1st branch and (N) is the indoor unit furthest from the 1st branch.
(2) : The total amount of refrigerant in the system should be 308 lbs (140 kg) or less.
(3) : When using a Multi port tyape Flow Selector unit, be sure to set the piping length between the indoor and the Flow Selector unit at least 33 ft (10 m).
If a piping length of 33 ft (10 m) or longer is not secured, refrigerant noise generated from the Multi port type Flow Selector unit may propagate to the indoor unit.
(4) : Extension up till 295 ft (90 m) is possible with conditions below :
– Single outdoor unit system
– Connected ratio of indoor units to outdoor units is below 105%
– Liquid side has been increased 1 size from standard size
– Change the connection method of the indoor unit from flare connection to welding connection.
(5) : Connection ratio of indoor unit capacity code to outdoor unit capacity code.
(6) : This limitation is for systems with three outdoor units connected.

Airtightness test
After the refrigerant piping has been finished, execute an airtight test.
For an airtight test, connect a nitrogen gas canister as shown in the figure on this page and apply pressure.

• Be sure to apply pressure from the service ports of the packed valves (or ball valve) at the liquid side and (HP/LP, Suction) gas side.
• An airtight test can only be performed at the service ports at the liquid side and (HP/LP, Suction) gas side.
• Close the valves fully at the (HP/LP, Suction) gas side and liquid side. As there is a possibility that the nitrogen gas will enter into the cycle of outdoor units, re-tighten the valve rods at the liquid side before applying pressure.
• For each refrigerant line, apply pressure gradually in steps at the liquid side and (HP/LP, Suction) gas side.
  Be sure to apply pressure at the (HP/LP, Suction) gas side and liquid side.

WARNING
Never use oxygen, flammable gases, or noxious gases in an airtight test.

Able to detect a serious leakage

1. Apply pressure 43.5 psi (0.3 MPa) for 5 minutes or more.

2. Apply pressure 217.5 psi (1.5 MPa) for 5 minutes or more.
   Available to detect slow leakage

3. Apply pressure 601 psi (4.15 MPa) for approx. 24 hours.

• If there is no pressure decrease after 24 hours, the test is passed.

NOTE
However, if the environmental temperature changes from the moment of applying pressure to 24 hours after that, the pressure will change by about 1.45 psi (0.01 MPa) per 1.8°F. Consider the pressure change when checking the test result.
REQUIREMENT
When pressure decrease is detected in steps 1-3, check the leakage at the connecting points.
Check the leakage using a foaming agent or other measures and seal the leak with re-brazing, flare retightening or other methods. After sealing, execute an airtight test again.

Vacuum drying

• Before and during installation, do NOT turn on the power until vacuuming and refrigerant charging are completed.
• Be sure to perform vacuuming from both liquid and (HP/LP, Suction) gas side.
• Be sure to use a vacuum pump equipped with the counter-flow prevention function so that oil in the pump will not flow back into piping for air conditioners. (If oil in the vacuum pump enters in the air conditioner with R410A refrigerant, a problem may be caused in the refrigerating cycle.)

After finishing the airtight test and discharging nitrogen gas, connect the gauge manifold to the service ports of the liquid side and (HP/LP, Suction) gas side and connect a vacuum pump as shown in the figure below. Be sure to perform vacuuming for the liquid and (HP/LP, Suction) gas pipe sides.

• Use a vacuum pump with a high vacuuming degree [-100.7 kPa (5 Torr, -755 mmHg)] and large exhaust gas amount (40 L/minute or larger).

• Perform vacuuming for 2 or 3 hours, though the time differs depending on the pipe length. Check that all the packed valves at the liquid side and (HP/LP, Suction) gas side are fully closed.

• If the pressure does not reach -100.7 kPa or less, continue vacuuming for 1 hour or more. If the pressure does not reach -100.7 kPa after 3 hours of vacuuming, stop vacuuming and check for air leakage.

• If the pressure reaches -100.7 kPa or less after vacuuming for 2 hours or more, close the valves VL and VH on the gauge manifold fully and stop the vacuum pump. Leave it as it is for 1 hour to confirm that the vacuuming degree does not change.
  If the degree of vacuum loss is large, moisture may remain in the pipes. In that case, inject dry nitrogen gas and apply pressure to 0.05 MPa and perform vacuuming again.

• After finishing the above procedure of vacuuming, exchange the vacuum pump with a refrigerant canister and advance to the additional charging of refrigerant.

Adding refrigerant
After finishing vacuuming, exchange the vacuum pump with a refrigerant canister and start additional charging of refrigerant.
Calculation of additional refrigerant charge amount
Refrigerant charge amount at shipment from the factory does not include the refrigerant for pipes at the local site.
For refrigerant to be charged in pipes at the local site, calculate the amount and charge it additionally.
NOTE
If the additional refrigerant amount indicates minus as the result of calculation, use the air conditioner without additional refrigerant.
Standard model

MMY-| MUP1FT6P-UL MUP1FT9P-UL| 072 type| 096 type| 120 type| 144 type| 168 type| 192 type
---|---|---|---|---|---|---|---
Amount of refrigerant charged in factory| lbs| 13.2| 19.8
kg| 6.0| 9.0

High heat model

Calculationg the additional amount of refigerant
Additional amount of refrigerant charge at site = [1] + [2] × [A] + [3] + [4] [1] Additional amount of refrigerant based on the outdoor unit capacity type. (Table 1-1,1-2)
[2] Additional amount of refrigerant based on the liquid pipe diameter and length.
Real length of liquid pipe × Additional amount of refrigerant charge per liquid pip length 1 ft and 1 m. (Table 2)
[A] Correction factor based on the indoor unit connection capacity. (Table A)
[3] Additional amount of refrigerant based on the indoor unit capacity type and number. (Table 3-1, 3-2, 3-3, 3-4)
[4] Refrigerant amount adjustment based on the indoor unit connection capacity. (Table 4)

Table 1-1 Standard model

| Outdoor unit capacity type| Combination outdoor units| Amount of additional refrigerant (lbs)| Amount of additional refrigerant (kg)
---|---|---|---|---
Unit 1| Unit 2| Unit 3
6 ton| 072| 072| –| –| 2.2| 1.0
8 ton| 096| 096| –| –| 2.2| 1.0
10 ton| 120| 120| –| –| 0.0| 0.0
12 ton| 144| 144| –| –| 2.2| 1.0
14 ton| 168| 168| –| –| 4.4| 2.0
16 ton| 192| 192| –| –| 5.5| 2.5
16 ton| 192| 096| 096| –| 4.4| 2.0
18 ton| 216| 144| 072| –| 4.4| 2.0
20 ton| 240| 144| 096| –| 4.4| 2.0
22 ton| 264| 168| 096| –| 6.6| 3.0
24 ton| 288| 144| 144| –| 4.4| 2.0
26 ton| 312| 168| 144| –| 6.6| 3.0
28 ton| 336| 168| 168| –| 8.8| 4.0
30 ton| 360| 168| 096| 096| 8.8| 4.0
32 ton| 384| 144| 144| 096| 6.6| 3.0
34 ton| 408| 168| 144| 096| 8.8| 4.0
36 ton| 432| 168| 168| 096| 11.0| 5.0
38 ton| 456| 168| 144| 144| 8.8| 4.0
40 ton| 480| 168| 168| 144| 11.0| 5.0
42 ton| 504| 168| 168| 168| 13.2| 6.0

Table 1-2 High heat model

| Outdoor unit capacity type| Combination outdoor units| Amount of additional refrigerant (lbs)| Amount of additional refrigerant (kg)
---|---|---|---|---
Unit 1| Unit 2| Unit 3
6 ton| 072| 072| –| –| 2.2| 1.0
8 ton| 096| 096| –| –| 2.2| 1.0
10 ton| 120| 120| –| –| 6.6| 3.0
12 ton| 144| 072| 072| –| 4.4| 2.0
16 ton| 192| 096| 096| –| 4.4| 2.0
20 ton| 240| 120| 120| –| 13.2| 6.0
24 ton| 288| 096| 096| 096| 6.6| 3.0
30 ton| 360| 120| 120| 120| 19.8| 9.0

Table 2 Additional amount of refrigerant based on the liquid pipe diameter and length.

0.235
kg / m| 0.025| 0.055| 0.105| 0.160| 0.250| 0.350

Table A

Table 3-1 Additional amount of refrigerant for standard indoor unit type.

Indoor unit capacity type| 007| 009| 012| 015| 018| 021| 024| 027| 030| 036| 042| 048| 054| 072| 096
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Additional amount of refrigerant| lbs / unit| 0.44| 0.88| 1.32| 2.20
kg / unit| 0.2| 0.4| 0.6| 1.0

**Table 3-2 Additional amount of refrigerant for 4-way Cassette type (Model name: MMU-UP*1HP-UL).

Indoor unit capacity type| 007| 009| 012| 015| 018| 024| 027| 030| 036| 042| 048| 054
---|---|---|---|---|---|---|---|---|---|---|---|---
Additional amount of refrigerant| lbs / unit| 0.44| 0.88| 1.32
kg / unit| 0.2| 0.4| 0.6

**Table 3-3 Additional amount of refrigerant for Concealed Duct Medium Static type
(Model name: MMD-UP*1BHP-UL).

Indoor unit capacity type| 007| 009| 012| 015| 018| 021| 024| 030| 036| 042| 048| 054
---|---|---|---|---|---|---|---|---|---|---|---|---
Additional amount of refrigerant| lbs / unit| 0.88| 1.32
kg / unit| 0.4| 0.6

**Table 3-4 Additional amount of refrigerant for DX Coil inter face
(Model name: TCB-IFDMR01UP-UL/RBM-A*1UPVR-UL)

Indoor unit capacity type ton| 007
0.6| 009
0.8| 012
1| 015
1.25| 018
1.5| 024
2| 027
2.25| 030
2.5| 036
3| 048
4| 054
4.5| 060
5| 072
6| 096
8| 120

10

---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---
Additional amount of refrigerant| lbs / unit| 0.24| 0.32| 0.42| 0.60| 0.72| 0.92| 1.12| 1.20| 1.51| 1.91| 2.11| 2.50| 3.09| 3.97| 4.68
kg / unit| 0.11| 0.15| 0.19| 0.27| 0.33| 0.42| 0.51| 0.54| 0.69| 0.87| 0.96| 1.13| 1.40| 1.80| 2.12

• If the Outside Air Unit (MMD-UP**HFP-UL) is connected, the correction amount refrigerant for Outside Air Unit is 0 kg.
  **

Table 4 Refrigerant amount adjustment based on the indoor unit connection capacity.

Charging of refrigerant

• Keeping the valve of the outdoor unit, be sure to charge the liquid refrigerant into the service port at the liquid side.

• If the specifi ed of refrigerant cannot be charged, fully open the valves of the outdoor unit at liquid and gas sides, operate the air conditioner in COOL mode, and then charge refrigerant into service port at the L gas side.
  In this time, choke the refrigerant slightly by operating the valve of the canister to charge liquid refrigerant.

• The liquid refrigerant may be charged suddenly, therefore be sure to charge refrigerant gradualy.

Full opening of the valve
Open the valves of the outdoor unit fully.

Liquid side HP/LP gas side| Packed valve
Using a 5 mm-hexagonal wrench, turn the valve shaft counterclockwise fully to open it.

---|---
Suction gas side| Ball valve
Using a wrench, turn it counterclockwise by 90° until it hits the stopper. (Full open)
For the ball valve with the stopper, release the stopper to opened or closed the ball valve. When finished working, to set the stopper.
Pay attention so that the wrench does not come into contact with the charge port when the body cap is opened or closed.

Position of the Check-joint
The figure below shows the position of the check-joint.

Heat insulation for pipe

• Apply heat insulation of pipe separately at the liquid, gas, and balance sides.
• Be sure to use thermal insulator resistant up to 248°F (120°C) or higher for pipes at the gas side.

Finishing after connecting pipes

• After piping connection work has been finished, cover the opening of the piping/wiring panel with the piping cover, or fill silicon or putty into the space between the pipes.
• In case of drawing-out the pipes downward, also close the openings of the base plate.
• Under the opened condition, a problem may be caused due to the entering of water or dust.

Electric wiring

WARNING
The equipment shall be installed in compliance with NEC and local codes.
CAUTION

• Do not connect high voltage power wires to the control terminal blocks (Uv (U1, U2), Uh (U3, U4), Uc (U5, U6));
• All fi eld wiring insulation rating must comply with NEC and local codes.
• All wiring must be strained relieved as specifi ed by NEC and local codes.
• Refrigerant piping and control wiring should use the same routing.
• Do not energize the indoor units until leak check and vacuuming are completed.
• For indoor unit power and control wiring see indoor unit installation instructions.
  The appliance shall be installed in accordance with national wiring regulations.

NOTE

• Use copper supply wires only.
• Use wiring with insulation rated for the highest voltage involved for communication and power wiring.

Power supply specifications
Do not bridge the power between outdoor units through the equipped terminal blocks (L1, L2, L3).

Power wiring selection
1 Single unit

2 Combination of outdoor unit
MCA: Minimum Circuit Amps
MOCP: Maximum Overcurrent Protection (Amps)

MCA: Minimum Circuit Amps
MOCP : Maximum Overcurrent Protection (Amps)

■ Communication line
TU2C-LINK models (U series) can be combined with TCC-LINK models (other than U series).
But SHRM-u (Outdoor unit) can NOT be combined with TCC-LINK models (other than U series).
For details of communication type, refer to the following table.
Communication type and model names

Communication type| TU2C-LINK (U series future models)| TCC- LINK (Other than U series)
---|---|---
Outdoor unit| | Other than U series MMY-MAP✱✱✱ MCY- MAP✱✱✱
Indoor unit| Other than U series MM✱-AP✱✱✱
Flow selector unit| Other than U series RBM-Y✱✱✱F✱ RBM-Y✱✱✱F✱P✱
Wired remote controller| Other than U series
Wireless remote controller kit & receiver unit| Other than U series

U series outdoor unit : SMMS-u (MMY-MUP✱✱✱)
SHRM-u outdoor unit : MMY-MUP✱✱✱FT
Other than U series outdoor unit : SMMS-i, SMMS-e etc. (MMY-MAP✱✱✱, MCY- MAP✱✱✱)

Specifications for communication wiring
Design of communication wiring
Summary of communication wiring

• Communication wiring and central control wiring use 2-core non-polarity wires
  Use 2-core shield wires to prevent noise trouble.

• Connecting the closed end terminal of shield wire. (Connected to all connecting sections in each unit)

• Use 2-core non-polarity wire for remote controller. (A, B terminals)
  Use 2-core non-polarity wire for Multi port type FS unit and Single port type FS unit. (A, B terminals)
  Use 2-core non-polarity wire for wiring of group control. (A, B terminals)

Table-1 Uv line

Table-2 Uh line

AEG14 (2.0 mm2): Up to 6561 ft (2000 m)

Table-3 Remote controller wiring, Flow Selector unit Multi-port type and Single – port type wiring

Up to 1312 ft (400 m) in case of wireless remote controller in group control.
Up to 656 ft (200 m) total length of communication wiring between indoor units and FS unit (Multi-port type and Single-port type) (L5+L6)
Up to 984 ft (300 m) (L4)

• U (v, h, c) line means of control wiring.
  Uv line: Between indoor and outdoor units.
  Uh line: Central control line.
  Uc line: Between outdoor and outdoor units.

REQUIREMENT

• For the central control line (L1) when U-series outdoor units and outdoor units other than U-series are connected to the central control device, follow the communication wiring specifi cations for outdoor unit other than U-series.

• Using the same wire type and size, wire each line below.
  If the different wire types and sizes are mixed in each line, communication trouble is caused.

• Central control line and wiring between indoors and outdoor units other than SHRM-u and U-series

• Uv line (wiring between indoor and outdoor units) and Uc line (wiring between outdoor and outdoor units) in SHRM-u and U-series

• Wiring between outdoor and outdoor units other than SHRM-u and U-series

• For communication wiring specifi cations for outdoor unit other than SHRM-u, refer to the Installation Manual attached to the outdoor unit to be connected.

[Uh-line and line / wiring between outdoor and indoor units other than SHRM-u and U series] Up to 6561 ft (2000 m) (L1 + L10 + L11)
[Uv line and Uc line in U series] Up to 3280 ft (1000 m) (L2, L3)
Up to 3280 ft (1000 m) (L8 + L9)
[Between outdoor and outdoor units other than SHRM-u and U series
Up to 328 ft (100 m) (L12)

• Even if the indoor units, the remote controllers, and the central control device are models other than U series their system diagrams for the wiring specifications are the same as the system diagram above.

Group control through a remote controller
SHRM-u cannot connect to the model other than SHRM-u and U series (TCC-LINK).

Power supply wire connection

1. Insert the power supply wires from lower right of the electrical control box and connect them to the power terminal blocks and the grounding line to the grounding screw, and then fix each of the five wires with each cord clamp and binding band.
2. When finished wiring the power supply wires, get each of five wires through the cutout on the sealing material (black) under the cord clamp to pull it outside the electrical control box. Tear upper and lower of the cutout on the sealing material with your hands before getting the wires through the cutout.
3. Get the binding band through two holes in the right part of the valve fixing plate and fix the power supply wires with it.

Connection of power supply wires and communication wires
Remove knockouts on the piping / wiring panel on the front of the unit and the panel on the bottom to get the power and communication wires through the holes.

1. Connect the power supply conduit to the field wiring panel.
2. Route the power supply wiring through the raceway and connect to the power supply terminal block and ground screw.
3. Use ring terminals on field power wires if required by NEC and local codes.

NOTE
Be sure to separate the power supply wire and communication wires.
Bundle the control wires in the cutout so that they do not get caught in the electrical control box cover.
Screw size and tightening torque

| Screw size| Tightening torque ft•lbs (N•m)
---|---|---
Power supply terminal| M6| 1.8 to 2.2 (2.5 to 3.0)
Grounding screw| M8| 4.1 to 4.9 (5.5 to 6.6)

Communication wire connection

1. Insert the communication wires from lower right of the electrical control box and connect them to the communication terminal blocks.
2. Fix the communication wires with the cord clamp on the right of the terminal block and fix them with the cord clamp on the sealing material under the electrical control box, and then get the wires through the cutout on the sealing material to pull them outside the electrical control box. Tear upper and lower of the cutout on the sealing material with your hands before getting the wires through the cutout.

Screw size and tightening torque

| Screw size| Tightening torque ft•lbs (N•m)
---|---|---
Communication wire terminal| M4| 0.9 to 1.0 (1.2 to 1.4)

Address setting

On this unit, it is required to set the addresses of the indoor units before starting air conditioning.
Set the addresses following the steps below.
CAUTION

• Be sure to complete the electric wiring before setting the addresses.
• If you turn on the outdoor unit before turning on the indoor units, the Code (DN) [E19] is indicated on the 7 – segment display on the interface P.C. board of the outdoor unit until the indoor units are tumed on. This is not a malfunction.
• It may take up to ten minutes (normally about five minutes) to address one refrigerant line automatically.
• Settings on the outdoor unit are required for automatic addressing. (Address setting is not started simply by turning on the power.)
• Running the unit is not required for address setting.

Before setting the address, set the DIP-SW on the header outdoor unit interface P.C. board.
1. Follow the steps below to open the electrical control box cover

1. Loosen the screws on the left and right side of the electrical control box cover.

2. Remove the screw A for MMY-MUP1921FT6, 1201FT9″, 1441FT9, 1681FT9, O96H1FT9, 120H1FT9*.
   (There are no screws other than the above.)

3. Hold the lower side of the electrical control box cover to draw it toward you while lifting it up, and remove the electrical control box cover.

2. Follow the steps below to set the DIP switch on the header outdoor unit interface P.C. board.
2-1.Header outdoor unit setting
Turn on DIP switch 1 of SW101 on the header outdoor unit interface P.C. boards.
And, turn on DIP switch 2 of SW100.
Interface P.C. board on the header outdoor unit

2-2.Line (system) address setting
For the central control among two or more refrigerant lines or group control among two or more refrigerant lines, set the line (system) address.

(1) Set a line (system) address for each system using SW101 and 102 on the interface P.C. board on the header outdoor unit of each system.
(Factory default : Address 1)
NOTE
Be sure to set a unique address on each system. Do not use a same address as another system (refrigerant line).
Interface P.C. board on the header outdoor unit

Switch settings for a line (system) address on the interface P.C. board on the outdoor unit
(◯: switch ON, X: switch OFF)

NOTE
Beware that if the setting is different from what is shown in the table above, the line (system) address will be 28.
Because the SW101 bit 1 is a dedicated switch for the header outdoor unit, it is not used for line (system) address setting.

(2) Turn on DIP switch 1 of SW100 on the header outdoor unit interface P.C. board of the lowest system address number.
Switch setting (setting example when controlling 2 or more refrigerant lines centrally)
Outdoor units (setting manually)

3. Attach the electrical control box cover.
4. Open the access door cover and follow the steps below to set the address.
REQUIREMENT

• High voltage parts exist in the electrical control box.
  If you set addresses on an outdoor unit, operate the unit through the access door as shown in the illustration below to avoid electric shock. Do not remove the cover of electrical control box.
• After finishing operations, close the access door cover and fix it with the screw.

1. Turn on indoor units first, and then turn on outdoor units.

2. About 1 minute after turning the power on, confirm that the 7-segment display on the interface P. C . board of the header outdoor unit indicates U. 1. Err (U. 1. flash) and L08 alternately at 1 second intervals.

3. Push SW06 for more than 1 second to start the automatic address setting.
   (It may take up to 10 minutes (normally about 5 minutes) to complete one line’s setting.)

4. The 7-segment display indicates Auto 1 Auto 2 Auto 3.
   The setting is complete when the display changes to U. 1. – – – (U. 1. flash) or U. 1. – – – (U. 1. light).

• When either indoor unit or equipment that is incompatible with TU2C-LINK is connected, “L02” will be displayed.
  If “L02” is displayed, check if the connected indoor unit and equipment are compatible with TU2C-LINK.

  5. Repeat steps 2 to 4 for other refrigerant lines.
  6. Set the central control address.
     (For the setting of the central control address, refer to the Installation Manuals of the central control devices.)

Interface P.C. board on the header outdoor unit

■ Changing the indoor unit address using a remote control
To change an indoor unit address using a wired remote control.
Remote control model name : RBC-AWSU52-UL
▼ The method to change the address of an individual indoor unit (the indoor unit is paired with a wired remote controller one-tone),or an indoor unit in a group. (The method is available when the addresses have already been set automatically.)

1. Push [ Menu] to open the “Menu”

2. Push and hold [ Menu] and [ ] at the same time to open “Field setting menu”
   ⇒ Push and hold 4 seconds.

3. In the “Field setting menu” screen, push [ ] and [ ] to select “DN setting”, and then push [  Set/Fix]

4. Push [ ] and [ ] to select “Indoor unit”, and the push [  Set/Fix] ⇒ “Indoor unit” was selected, the fans and louvres of the indoor units operate.
   When doing group connections:
   ⇒ The fans and louvres of the selected indoor units operate.

5. Push [ ] to black highlight the code (DN), and then push [ ] and [ ] to set the code number to [0013]*

6. Push [ ] to black highlight the data, and then push [ ] and [ ] to set the data

7. After finishing setting the data of the code (DN), push [  Set/Fix] ⇒ “Continue?” is displayed.

8. To set the data of other codes (DN), push [  Set/Fix] To not do other settings, push [  Return] ⇒ The changes are fixed, and the “Field setting menu” screen returns.
   ⇒ “ ” appears while data is changing.
   When doing group connections:
   ⇒ Push [  Return] to open the unit selection screen. In the unit selection screen, push [ Return] to briefly display “ ”, and then return to the “Field setting menu” screen.

9. To change settings of another indoor unit, repeat from Procedure 1.

• When setting the line (system) address or group address, set the code number to [0012] and [0014] respectively.
  Group address [0014] is set as follows.

Follower unit

NOTE

1. Check code [E04] (Indoor / outdoor communication trouble) will appear if line (system) addresses are mistakenly set.
2. If you set addresses to indoor units in 2 or more refrigerate lines manually using the remote control and will control them centrally, set the header outdoor unit of each line as below.

• Set a system address for the header outdoor unit of each line with SW101 and 102 of their interface P.C. boards.
• Turn on DIP switch 1 of SW100 on the header outdoor unit interface P.C. board of the lowest system address number.
• After finishing all the settings above, set the address of the central control devices. (For the setting of the central control address, refer to the Installation Manuals of the central control devices.)

Resetting the address
(Resetting to the factory default (address undecided))
Method 1
Clearing each address separately using a wired remote control.
Set the system address, indoor unit address and group address to “00Un” using a wired remote control.
(For the setting procedure, refer to the address setting procedures using the wired remote control on the previous pages.)
Method 2
Clearing all the indoor unit addresses on a refrigerate line at once from the outdoor unit.

1. Turn off the indoor and outdoor units of the refrigerant line to reset to the factory default and set the header outdoor unit of the line as below.
2. Turn on the indoor and outdoor units of the refrigerant line for which you want to initialize the addresses. About one minute after turning on the power, confirm that the 7-segment display on the header outdoor unit indicates “U.1. – – -” and operate the interface P.C. board on the header outdoor unit of the refrigerant line as follows.
   SW01| SW02| SW03| SW04| Clearable addresses
   ---|---|---|---|---
   2| 1| 2| Confirm that the 7-segment display indicates “A.d.buS” and turn SW04 ON for more than five seconds.| System / indoor unit / group address
   2| 2| 2| Confirm that the 7-segment display indicates “A.d.nEt” and turn SW04 ON for more than five seconds.| Central control address
3. Confirm that the 7-segment display indicates “A.d. c.L.” and set SW01, SW02 and SW03 to 1, 1, 1 respectively.
4. After finished clearing the address successfully, “U.1.Err” and “L08” appear alternatively at 1 second intervals on the 7-segment display.
5. Set the addresses again after finishing the clearance.

Communication setting

This product needs setting TU2C-LINK communication after the address setting.
Follow the procedure below for the communication setting.
TCC-LINK communication has been set as the factory default.
CAUTION

• Be sure to complete the electric wiring before setting the addresses.

• It may takes approximately 1 to 3 minutes to address one refrigerant line.

• Settings on the outdoor unit are required for communication setting.
  (Communication setting is not started simply by turning on the power.)

• If outdoor units for which communication setting has already been made are connected, the setting cannot be made correctly.
  In this case, reset the communication setting and perform the setting again.

Communication setting

1. Turn on indoor units first, and then turn on outdoor units.

2. Set the rotary switch of the interface P.C. board on the header outdoor unit to SW01= [2], SW02= [16] and SW03= [2].

3. The 7-segment display switches between “c.c. b p s” and “c.c. 0” at 1-second intervals.

4. Push and hold SW04 for more than 5 seconds.

5. The 7-segment display flashes “c.c.i n”.

6. The 7-segment display switches between “c.c. i n” and “c.c. ” at 1-second intervals.
   The number of connected indoor unit is displayed in [***], so if it is correct, proceed to “ 7 ”. In parentheses are the measures to be taken when the number of indoor units is different.
   (When the number of the connected indoor units differs from the number of indoor units displayed on the 7-segment display, clear the communication type setting to eliminate the cause. To clear the communication type setting, push and hold the SW05 for 5 seconds or more.
   The 7-segment display flashes “c.c.r S t”.
   After a while, the 7-segment display switches between “c.c. b p s” and “c.c. 0”.

7. Push and hold SW06 for more than 5 seconds.

8. The 7-segment display flashes “c.c.b p s”.
   After that, the setting is complete when the 7-segment display changes to “c.c F i n”.
   (If the 7-segment display changes to “c.c. E r r”, try again.)
   When either a TU2C-LINK incompatible device is connected, “L02” will be displayed for 30 minutes.
   If “L02” is displayed, please check whether the connected device is a device compatible with TU2C-LINK.

9. After a while, the 7-segment display switches between “c.c. b p s” and “c.c. 1” (or “c.c. o ”) at 1- second intervals.

10. Set back the rotary switch on the interface P.C. board of the header outdoor unit to SW01= [1], SW02= [1] and SW03= [1].

Interface P.C. board on the header outdoor unit

Resetting the communication (Return to factory default)

1. Turn off indoor units and then turn off outdoor units.

2. Set SW106-2 on the interface P.C. board of the header outdoor unit to ON.

3. Turn on outdoor units and then turn on indoor units.
   (Turn on the header unit, and then 20 seconds or more later, turn on the follower units and indoor units. If the follower units cannot be turned on after the header unit has been turned on, turn on both of them simultaneously. After that, turn on the indoor unit.)

4. The 7-segment display indication “ – r S t. – ”. Check all the units have turned on more than approx. 1 minute. Turn off all the indoor and outdoor units.

5. Set SW106-2 on the interface P.C. board of the header outdoor unit to OFF.

■ Flow Selector unit address setting
On this unit, it is required to set the addresses of Flow selector units before starting air conditioning.
Set the addresses following below procedure.
■ Before Flow Selector unit address settings
Complete “Indoor unit address setting” and “TU2C-LINK communication setting”.
Confirm the schematic of piping and wiring.
CAUTION
Set only the Code (DN) number shown in the following table: DO NOT set any other Code (DN) number.
If a Code (DN) number not listed is set, it may not be possible to operate the air conditioner or other trouble with the product may result.
Remote control model name: RBC-AWSU52-UL
▼ The method to change the address of an individual indoor unit (the indoor unit is paired with a wired remote controller one to one), or an indoor unit in a group.
(The method is available when the addresses have already been set automatically.)

1. Push [  Menu] to open the “Menu”

2. Push and hold [ Menu] and [ ] at the same time to open “Field setting menu”
   ⇒ Push and hold 4 seconds.

3. In the “Field setting menu” screen, push [ ] and [ ] to select “DN setting”, and then push [  Set/Fix]

4. Push [ ] and [ ] to select “Indoor unit”, and the push [  Set/Fix] ⇒ “Indoor unit” was selected, the fans and louvres of the indoor units operate.
   When doing group connections:
   ⇒ The fans and louvres of the selected indoor units operate.

5. Push [ ] to black highlight the code (DN), and then push [ ] and [ ] to set the code number to [00FE], [0105], [0106]

6. Push [ ] to black highlight the data, and then push [ ] and [ ] to set the data

7. After finishing setting the data of the code (DN), push [  Set/Fix] ⇒ “Continue?” is displayed.

8. To set the data of other codes (DN), push [  Set/Fix] To not do other settings, push [  Return] ⇒ The changes are fixed, and the “Field setting menu” screen returns.
   ⇒ “ ” appears while data is changing.
   When doing group connections:
   ⇒ Push [  Return] to open the unit selection screen. In the unit selection screen, push [ Return] to briefly display “ ”, and then return to the “Field setting menu” screen.

9. To change settings of another indoor unit, repeat from Procedure 1.

Set a unipue address for Flow Selector unit in the system.
Should not be duplicate flow selector unit addresses in one system.| 00Un
Flow Selector unit port address| 0105| 0001 to 00012
Set a unique address for each port in a multiport- Flow Selector unit.
Should not be duplicate port addresses in one multiport Flow Selector unit.| 0000
Combining branches mode| 0106| 0000 : Invalid
0001 : Valid| 0000

Examples of Flow Selector unit address setting

[Cautions to connection of indoor unit ]

• When connecting the indoor units to a Flow Selector unit single port type and a Flow Selector unit multi port type, it is necessary to set below CODE (DN) number.
  Be sure to set the CODE (DN) number after address setting.

• When connecting the indoor units to a single port type Flow Selector unit and a branch of the multi port type Flow
  Selector unit and Shut-off Valve unit, it is possible to connect with multiple groups and connect individually.

• When connecting the indoor units to a branch of the multi port type Flow Selector unit, it is necessary to set up the port address number. (the CODE (DN) number [105]).
  Be sure to set up the port address number.

• Run the refrigerant piping line and communication wiring line in the same line.

• The Flow Selector unit has multiple ports. So piping and wiring to the same indoor unit shall be connected to the same number (1,2,3,4,..) of port.

• When connecting the indoor units to combining branches of the multi port type Flow Selector unit, it is necessary to set up the CODE (DN) number [106].
  Be sure to set up the CODE (DN) number [106].

• Even if you do not add safety equipment, be sure to set safety measures (the CODE (DN) number [107]).

[Connection rules]

• It is possible to branch after the port.
• It is possible to set the group of indoor units after the port.
• The multi-port type Flow Selector unit can group indoor units with adjacent ports.

1. Group settings across ports are allowed only adjacent (contiguous) ports.
2. Only some indoor units in one port are not allowed to be grouped with the indoor units on other ports.
   (It is allowed to group all indoor units in one port with the indoor units of other ports.)

• Ports can be combined and used.

1. Port combined use should be up to 2 ports, and combined use of 3 or more ports is not allowed.
2. Port combined use is allowed only for adjacent ports.

• Group settings across Flow Selector units or Shut-off Valve units are not allowed.

• The Flow Selector unit and Shut-off Valve unit are allowed in the system.

• Simultaneous connection of Flow Selector units and Shut-off Valve units to the same indoor unit is not allowed.

• It is not possible to set the port combined use across the P.C. board of the multiport type Flow Selector unit.

• Be sure to connect the No.1 port of the multiport type Flow Selector unit to the indoor unit.
  (If the indoor unit is not connected to No.1 port, the air conditioning system will not operate.)

• In the case of the same group, connect one communication line to the Flow Selector unit (one place).
  (The connection location should be made at the sub bus terminal of the address with the smallest port address of the Flow Selector unit.)

| : Outdoor unit
---|---
| : Indoor unit
| : Remote controller
| : Single port type FS unit
| : Multi port type FS unit
| : Piping
——–| : Control wiring

♦ [ Indoor Code DN number Setting example ] [ 0014 ] : Indoor unit Group address
0 : Individual (Factory default)
1 : Header unit
2 : Follower unit
[ 00FE ] : Flow selector unit address
• Should not be duplicate in one system.
• Factory default : Un
[ 00FD ] : Priority operation mode
0 : Heating prioritized (Factory default)
1 : Cooling prioritized (The cooling is prioritized even if setting only one unit in one branching)
[ 0105 ] : FS unit port address (1~12)
• As for multi port type FS unit, set up within the range of 1~12.
• As for both single port type FS unit and shut-off valve unit, set up CODE No. “105” to 1.
[ 0106 ] : Combining branches mode of the multi port type FS unit
0 : NOT combining branches mode
1 : Combining branches mode

In case of connecting one indoor unit to single port type FS unit.

In case of connecting one group oeration of indoor units to single port type FS unit.

In case of connecting two indoor units to single port type FS unit.

It is not necessary to set up.
It is not necessary to set up.

Incorrect connection example

In case of connecting one group operation of indoor unit to single port type FS unit and two remote controller.

It is not necessary to set up.
It is not necessary to set up.
In case of connecting one indoor unit to one port of multi port type FS unit.

In case of connecting one indoor unit and not connecting indoor unit to one port of multi port type FS unit.

In case of connecting to combining branches of multi port type FS unit.

Incorrect connection

Incorrect connection

In case of connecting to combining branches of multi port type FS unit, and there are multiple in the system.

Incorrect connection

Incorrect connection

In case of one group operation of indoor units to multiple ports of multi port type FS unit.

Incorrect connection

In case of two group operations of indoor units to multiple ports of multi port type FS unit.

In case of connecting two group operation of indoor units to multiple ports of multi port type FS unit, and connecting two remote controllers to one group of indoor unit.

In case of connecting one group operation of indoor unit to mltiple port and combining branches of multi port type FS unit.

Incorrect connection

In case of connecting one group operation of indoor unit to one port of multi port type FS unit.

In case of connecting two indoor units to one port of multi port type FS unit.

In case of connecting one group operation of indoor units to one port and multiple ports of multi port type FS unit.

Incorrect connection

In case of connecting one group operation of indoor unit and one indoor unit to one port of multi port type FS unit.

In case of connecting one group operation of indoor unit to combining branches of multi port type FS unit.

In case of connecting one indoor unit to single port type FS unit, and connecting one indoor unit to one port of multiple port type FS unit.

In case of connecting one group operation of indoor units to mltiple port of multi port type FS unit, and there are two multi port type FS units.

In case of connecting one indoor unit to one port of multi port type FS unit, and there are two multi port type FS units.

Incorrect connection

Applicable control settings

When connecting an optional P.C. board (sold separately) for outdoor units, it is necessary to change the settings of the outdoor unit.
All are set to [Standard (factory setting)] at the time of shipment, so change the settings of the outdoor unit as necessary.
The settings can be changed by operating the switches on the interface board.
In the TU2C-LINK communication system, it can also be done by operating the wired remote control.
♦ Applicable control settings (Outdoor unit Code (DN) number settings)
(settings at the site)
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 (DN) number shown in the following table: Do NOT set any other Code (DN) number.
If a Code (DN) number not listed is set, it may not be possible to operate the air conditioner or other trouble with the product may result.
When switching settings from the interface P.C. board of the outdoor unit

1. Set the rotary switch of the interface P.C. board on the outdoor unit to SW01= [9], SW02= [1] and SW03= [1].

2. The 7-segment display shows “d n.S E t”.

3. When SW04 is pushed, the 7-segment display switches to “d n.0 0 1” and the outdoor unit Code (DN) number [001] is displayed.

4. Change outdoor unit Code (DN) number [ ] with SW05 or SW06.
   Push SW05 to advance the code. Push and hold SW05 to advance in 5 steps.
   Push SW06 to return the code. Push and hold SW05 to return in 5 steps.

5. When SW04 is pushed, the 7-segment display blinks “d. ” and the setting data [****] being set is displayed.

6. Change setting data [****] with SW05 or SW06.
   Push SW05 to advance the data. Push SW06 to return the setting data.

7. Push and hold SW04 for more than 2 seconds.
   When the flashing stops and remain lit on the display, the setting is complete.
   (To return to the item code setting after completing the setting, or to return to the item code setting without setting, push SW04 once.)

8. Set the rotary switch on the interface P.C. board of the outdoor unit back to SW01= [1], SW02= [1], SW03= [1].

9. Reset the power of the outdoor unit (power off for one minute or more).

Interface P.C. board of header unit

When switching from the wired remote control (RBC-AWSU52-UL)
Basic procedure
Be sure to stop the air conditioner before making settings.
(Change the setup while the air conditioner is not working.)

1. Push [  Menu] to open the “Menu”

2. Push and hold [ Menu] and [ ] at the same time to open “Field setting menu”
   ⇒ Push and hold 4 seconds.

3. In the “Field setting menu” screen, push [ ] and [ ] to select “DN setting”, and then push [ Set/Fix]

4. Push [ ] and [ ] to select “Outdoor unit”, and the push [  Set/Fix] • The fan of the selected outdoor unit runs.
   The outdoor unit can be confirmed for which to change settings.

5. Push [ ] to black highlight the code (DN), and then push [ ] and [ ] to set the code number to [✱✱✱✱].

6. Push [ ] to black highlight the data, and then push [ ] and [ ] to set the data to [✱✱✱✱].

7. After finishing setting the data of the code (DN) number, push [  Set/Fix] ⇒ “Continue?” is displayed.

8. To set the data of other codes (DN) number, push [ Set/Fix] To not do other settings, push [  Return] ⇒ The changes are fixed, and the “Field setting menu” screen returns.
   ⇒ “ ” appears while data is changing.
   • To change settings of another outdoor unit, repeat from Procedure 1.

◆ Applicable control settings (Indoor unit Code (DN) number settings)
Basic procedure
Be sure to stop the air conditioner before making settings.
(Change the setting while the air conditioner is not working.)
Remote controller model name : RBC-AWSU52-UL

1. Push [  Menu] to open the “Menu”

2. Push and hold [ Menu] and [ ] at the same time to open “Field setting menu”
   ⇒ Push and hold 4 seconds.

3. In the “Field setting menu” screen, push [ ] and [ ] to select “DN setting”, and then push [ Set/Fix]

4. Push [ ] and [ ] to select “Indoor unit”, and the push [ Set/Fix]

◆ Applicable control settings (Indoor unit Code (DN) number settings)
Basic procedure
Be sure to stop the air conditioner before making settings.
(Change the setting while the air conditioner is not working.)
Remote controller model name : RBC-AWSU52-UL

1. Push [  Menu] to open the “Menu”

2. Push and hold [ Menu] and [ ] at the same time to open “Field setting menu”
   ⇒ Push and hold 4 seconds.

3. In the “Field setting menu” screen, push [ ] and [ ] to select “DN setting”, and then push [ Set/Fix]

4. Push [ ] and [ ] to select “Indoor unit”, and the push [ Set/Fix] ⇒ “Indoor unit” was selected, the fans and louvres of the indoor units operate.
   When doing group connections:
   ⇒ The fans and louvres of the selected indoor units operate.

5. Push [ ] to black highlight the code (DN), and then push [ ] and [ ] to set the code number to [****]

6. Push [ ] to black highlight the data, and then push [ ] and [ ] to set the data

7. After finishing setting the data of the code (DN), push [ Set/Fix] ⇒ “Continue?” is displayed.

8. To set the data of other codes (DN), push [ Set/Fix] To not do other settings, push [ Return] ⇒ The changes are fixed, and the “Field setting menu” screen returns.
   ⇒ “ ” appears while data is changing.
   When doing group connections:
   ⇒ Push [ Return] to open the unit selection screen. In the unit selection screen, push [ Return] to briefly display “ ”, and then return to the “Field setting menu” screen.

9. To change settings of another indoor unit, repeat from Procedure 1.

■ Pre-heating 46°F (8°C) operation
*This function is available only “High heat model”
Pre-heating operation can be set for cold climate regions where room temperature drops to below zero.

• This function is available only for the following indoor units. Do not carry out this setting for indoor units that are not applicable.
  Pre-heating operation applicable indoor unit

■ When setting all indoor units at once : Follow ① procedure
■ When setting each indoor unit individually : Follow ② procedure
■ After ① or ②, select 64°F (18°C) in the temperature setting on the remote controller, then press and hold to set to 46°F (8°C).

① Change the settings from interface P.C. board of the outdoor unit
Interface P.C. board on the header outdoor unit

1. Turn on indoor units first, and then turn on outdoor units.

2. Set the rotary switch of the interface P.C. board on the header outdoor unit to SW01= [9], SW02= [2] and SW03= [1].

3. The 7-segment display “idn.S t”.

4. Push and hold SW04 for more than 5 seconds.

5. The 7-segment display flashes “id.ODi”.

6. Push SW04.

7. The 7-segment display switches between “d. ” and “d.✱✱✱✱” at 1-second intervals.

8. Push SW05 or SW06, and select the setting data
   Setting Data| 0000 : Invalid (Factory default)
   0001 : Valid
   ---|---

9. Push and hold SW04 for more than 5 seconds.
   If The 7-segment display “d.✱✱✱✱”, setting is completed

10. Set back the rotary switch of the interface P.C. board on the header outdoor unit to SW01= [1], SW02= [1] and SW03= [1].

② When change the settings from Remote controller
Follow the basic procedure for Indoor unit Code (DN) number settings (1 → 2 → 3 → 4 → 5 → 6 → 7).

• Specify [00D1] for the Code No. in Procedure 4.
• Select the following data for the Set data in Procedure 5.

Setting Data| 0000 : Invalid (Factory default)
0001 : Valid
---|---

■ Communication type
*SHRM-u can not be combined with TCC-LINK models.
The Communication type setting of individual indoor units can be changed.
Follow to the basic opreration procedure (1 → 2 → 3 → 4 → 5 → 6 → 7).

• Specify [00FC] for the Code No. in Procedure 4.
• Select the Set data [0003] (TU2C-LINK) in Procedure 5.

Setting Data| 0000 : TCC-LINK (Factory default)
0003 : TU2C-LINK
---|---

■ Terminating resistor setting for Indoor unit
The terminating resistor setting of individual indoor units can be changed.
Follow to the basic opreration procedure (1 → 2 → 3 → 4 → 5 → 6 → 7).

• Specify [01FC] for the Code No. in Procedure 4.
• Select the following data for the Set data in Procedure 5.

Setting Data| 0000 : OFF (Factory default)
0001 : ON (Terminating resistor)
---|---

■ Cooling only Indoor unit setting
The Cooling only setting of individual indoor units can be changed.
When setting the specifi c indoor unit to Cooling Only unit without connecting to the fl ow selector unit, setup to the indoor unit to become the Cooling Only unit is necessary. Perform setup in the following procedure.
Setup to the indoor unit is performed by handling the wired remote controller.
Even if a wired remote controller is not used, attach a wired remote controller for setup.
Change the setup with the wired remote controller before using the air conditioner with a wireless remote controller.
Follow to the basic opreration procedure (1 → 2 → 3 → 4 → 5 → 6 → 7).

• Specify [000F] for the Code No. in Procedure 4.
• Select the following data for the Set data in Procedure 5.

Setting Data| 0000 : Heat pump (Factory default)
0001 : Cooling only
---|---

Test run

Before test run
Confirm that the valve of the refrigerate pipe of the outdoor unit is OPEN.

• Before turning on the power, confirm that the resistance between the terminal block of power supply and the earth is more than 2 MQ using a 500 V megohmmeter.
  Do not run the unit if it is less than 2 MQ.

CAUTION

• Turn on the power and turn on the case heater of the compressor.
  To save the compressor when it is activated, leave the power on for more than 12 hours.

Methods of test run
♦ When connecting an Flow Selector unit perform the following detailed inspection mode.
The detailed inspection mode is performed on the interface board of the outdoor unit.
Detailed inspection mode is completed in about 40 minutes in general and about 90 minutes at maximum.