Toshiba MMU-AP0091H Owner's Manual Installation And Operation

Super heat recovery multi system

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Service manual (271 pages)

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OWNER'S MANUAL / INSTALLATION MANUAL

The indoor unit in Super Heat Recovery Multi System is common to one in Super Modular Multi System air conditioner.

Therefore refer to the service manuals for A03-009, A03-010, and A03-011 separately issued.

Heat Recovery Type

Indoor Unit

<4-way Air Discharge Cassette Type>

MMU-AP0091H, AP0121H, AP0151H,

MMU-AP0181H, AP0241H, AP0271H,

MMU-AP0301H, AP0361H, AP0481H

MMU-AP0561H

<2-way Air Discharge Cassette Type>

MMU-AP0071WH, AP0091WH, AP0121WH,

MMU-AP0151WH, AP0181WH, AP0241WH,

MMU-AP0271WH, AP0301WH, AP0481WH*

<1-way Air Discharge Cassette Type>

MMU-AP0071YH, AP0091YH, AP0121YH,

MMU-AP0151SH, AP0181SH, AP0241SH,

MMU-AP0152SH, AP0182SH, AP0242SH

MMD-AP0071BH, AP0091BH, AP0121BH, AP0151BH,

MMD-AP0181BH, AP0241BH, AP0271BH, AP0301BH,

MMD-AP0361BH, AP0481BH, AP0561BH

MMD-AP0181H, AP0241H, AP0271H,

MMD-AP0361H, AP0481H

MMD-AP0071SPH, AP0091SPH, AP0121SPH,

MMD-AP0151SPH, AP0181SPH

MMC-AP0151H, AP0181H, AP0241H,

MMC-AP0271H, AP0361H, AP0481H

MMK-AP0071H, AP0091H, AP0121H,

MMK-AP0151H, AP0181H, AP0241H,

MMK-AP0072H, AP0092H, AP0122H

MML-AP0071H, AP0091H, AP0121H,

MML-AP0151H, AP0181H, AP0241H

MML-AP0071BH, AP0091BH, AP0121BH,

MML-AP0151BH, AP0181BH, AP0241BH

MMF-AP0151H, AP0181H, AP0241H,AP0271H,

MMF-AP0361H, AP0481H, AP0561H

* CHINA market only

FILE NO. A05-012

System air conditioner

Outdoor Unit

MMY-MAP0802FT8

MMY-MAP1002FT8

MMY-MAP1202FT8

Flow Selector Unit

RBM-Y1122FE

RBM-Y1802FE

RBM-Y2802FE

PRINTED IN JAPAN, Aug, 2005 ToMo

R410A

(FS unit)

Table of Contents

Summary of Contents for Toshiba MMU-AP0091H

Page 1: Indoor Unit
Therefore refer to the service manuals for A03-009, A03-010, and A03-011 separately issued. Heat Recovery Type Indoor Unit Outdoor Unit <4-way Air Discharge Cassette Type> <Inverter Unit> MMU-AP0091H, AP0121H, AP0151H, MMY-MAP0802FT8 MMU-AP0181H, AP0241H, AP0271H, MMY-MAP1002FT8 MMU-AP0301H, AP0361H, AP0481H MMY-MAP1202FT8 MMU-AP0561H <2-way Air Discharge Cassette Type>...
Page 2 R22 in order to prevent destruction of the ozone layer. Be sure to use an indoor or outdoor unit in combination with the new refrigerant. Thank you very much for purchasing TOSHIBA SUPER HRM Air conditioner. Please read this manual carefully before using your Flow Selector unit.
Page 3: Table Of Contents
CONTENTS OWNER’S MANUAL (EH99920601- PRECAUTIONS FOR SAFETY ......................1 NAME OF EACH PART ........................3 PARTS NAME OF REMOTE CONTROLLER ..................6 CORRECT USAGE ..........................8 ADJUSTMENT OF WIND DIRECTION ....................9 TIMER OPERATION .......................... 16 INSTALLATION ..........................17 MAINTENANCE ..........................18 AIR CONDITIONER OPERATIONS AND PERFORMANCE ............
Page 4: Precautions For Safety
PRECAUTIONS FOR SAFETY WARNING Warning on installation Be sure to leave the installation work to the dealer or a store specializing. The exclusive knowledge and technology are required for installation work. Do not perform installation by yourself. If an incomplete installation is performed, a fire, electric shock, injury, or water leakage may be caused.
Page 5 CAUTION Caution on installation Check the drain pipes are installed so that they can drain water securely. If the piping is incomplete, water leakage occurs resulted in moisture on furniture. Check the earth leakage breaker is attached. It is necessary to attach an earth leakage breaker. Otherwise, it causes an electric shock.
Page 6: Name Of Each Part
NAME OF EACH PART Sold Separately Parts Indoor unit [4-way Air Discharge Cassette Type] Air outlet/Air outlet flap 2-way discharge/3-way discharge Select air blow direction in cooling or 2-way discharge or 3-way discharge can be heating operation each. selected according to the shape or arrangement of the room.
Page 7: Concealed Duct Type
[Concealed Duct Type] Air outlet flange Earth screw Discharge duct is connected. Earth screws are provided in the electric parts box. SuMoTuWeTh Fr Sa PROGRAM1 ERROR PROGRAM2 PROGRAM3 Air filter Air inlet Removes dust and trash. WEEKLY TIMER (Air filter is provided in the air inlet grille.) Air in the room is sucked from here.
Page 8 Air outlet/Air outlet flap Exchanges the air direction according to cooling or heating time. Earth screw It is prepared in the electric parts box. Air filter Removes dirt or dust. (It is included in the suction port.) Air inlet port Sucks air inside of the room from here.
Page 9: Parts Name Of Remote Controller
PARTS NAME OF REMOTE CONTROLLER Display section CODE No. In the display example, all indicators are displayed for the explanation. DATA SETTING TEST Display UNIT No. section In reality only, the selected contents are indicated. R.C. • When turning on the leak breaker at the first time, [SET DATA] flashes on TEMP.
Page 10 Operation section Push each button to select a desired operation. This remote controller can operate the maximum 8 indoor units. • The details of the operation needs to be set up once, afterward, the air conditioner can be used by pushing ON / OFF button only.
Page 11: Correct Usage
CORRECT USAGE When you use the air conditioner for the first time or when you change the SET DATA value, follow the proce- dure below. From the next time, the operation displayed on the remote controller will start by pushing the ON / OFF button only.
Page 12: Adjustment Of Wind Direction
REQUIREMENT [In Cooling operation] • The operation starts after approx. 1 minute. [In Heating operation] • In heating operation, the fan operation may continue for approx. 30 seconds after the air conditioner has stopped. • The indoor fan continues preheat operation for 3 to 5 minutes under stop condition, and then blows out the hot air.
Page 13 How to set up the air direction SWING/FIX Push button. Every pushing the button, the air direction changes. In Heating operation Set the air outlet flap downward. If directing it upward, the hot air may not come to the foot. Initial setup In Cooling / Dry operation Set the air outlet flap upward.
Page 14 According to the shape or arrangement of the room, the cold air and hot air can be discharged for two direc- tions or three directions. For details, contact the dealer. INFORMATION • If cooling operation is performed with downward discharge, dew may fall on surface of the cabinet or the horizontal flap resulted in dripping.
Page 15 Under Ceiling Type, 1-way Air Discharge Cassette Type (2SH Series) • While the air conditioner stops, the horizontal flap (Up/Down air direction adjustment plate) automatically directs upward. • While the air conditioner is in ready status for heating, the horizontal flap (Up/Down air direc- tion adjustment plate) directs upward.
Page 16 Right/Left air direction adjustment To change the air outlet direction to right or left side, set the vertical flap inside of the horizontal flap to the desired direction. INFORMATION • If cooling operation is performed with downward discharge, dew may fall on surface of the cabinet or the horizontal flap resulted in dripping.
Page 17 Floor Standing Cabinet Type [In Cooling operation] In cooling operation, use the air outlet flap with horizontal set point so that the cold air diffuses in whole room. [In Heating operation] In heating operation, use the air outlet flap with downward set point so that the hot air blows at the foot.
Page 18 Floor Standing Type Adjustment of air direction upward/downward [In Cooling operation] In cooling operation, move the flap with hands and use it with horizontal air outlet point so that the cold air diffuses in whole room. [In Heating operation] In heating operation, move the flap with hands and use the horizontal flap with downward set point so that the hot air blows at the foot.
Page 19: Timer Operation
TIMER OPERATION A type of timer operation can be selected from the following three types. OFF timer : The operation stops when the time of timer has reached the set time. Repeat OFF timer : Every time, the operation stops after the set time has passed. ON timer : The operation starts when the time of timer has reached the set time.
Page 20: Installation
INSTALLATION Installation location WARNING • Select a location for installation that will be able to safely bear the weight of the unit. If the installation location is not strong enough to support the unit and the unit falls, injury could result. CAUTION •...
Page 21: Maintenance
MAINTENANCE Cleaning of air filter • When [FILTER] is displayed on the remote controller, maintain the air filter. • Clogging of air filter decreases cooling/heating effect. CODE No. DATA SETTING TEST UNIT No. FILTER display R.C. Notifies the time to clean the air filter. TEMP.
Page 22 High Wall Type (Model : 1H series) • Push the projection at the center of air filter. Clip is out. • Undo the clip of air filter, pull the air filter downward while pushing it toward the main unit side. Push the air filter, (Model : 2H series) and pull it downward.
Page 23 Return the air filter • Insert the upper portion of air filter confirming to fit it is right and left edges on the indoor unit until it is firmly set. • Close the air inlet grille. If the FILTER lamp on the indoor unit is indicated, press the FILTER button on the remote controller or the TEMPORARY button on the indoor unit to turn off the lamp.
Page 24: Hints For Economical Operation
If you do not plan to use the unit for more than 1 month 1. Operate the fan for 3 to 4 hours to dry inside the unit • Operate “FAN” mode. 2. Stop the air conditioner and turn off the main power switch or the circuit breaker.
Page 25: Air Conditioner Operations And Performance
AIR CONDITIONER OPERATIONS AND PERFORMANCE Check before operation WARNING • Check whether earth wire is disconnected or out of place. Turn on the power switch • Check that air filter is installed to the indoor unit. 12 hours or more before starting before operation.
Page 26: Re-Installation
Air conditioner operating conditions For proper performance, operate the air conditioner under the following temperature conditions: Cooling Outdoor temperature : –10°C to 43°C (Dry-bulb temp.) operation Room temperature : 21°C to 32°C (Dry-bulb temp.), 15°C to 24°C (Wet-bulb temp.) Room relative humidity – less than 80 %. If the air conditioner operates CAUTION in excess of this figure, the surface of the air conditioner may cause dewing.
Page 27: When The Following Symptoms Are Found
WHEN THE FOLLOWING SYMPTOMS ARE FOUND Check the points described below before asking repair servicing. Symptom Cause Outdoor unit • White misty cold air or • Fan of the outdoor unit stops automatically and performs defrost water is out. operation. •...
Page 28 Confirmation and check When a trouble occurred in the air conditioner, the CODE No. check code and the indoor unit No. appear on the UNIT No. display part of the remote controller. The check code is only displayed during the opera- R.C.
Page 29: Accessory Parts
ACCESSORY PARTS r Accessory parts MMY- Q’ty Shape Part name MAP0802FT8 MAP1002FT8 MAP1202FT8 Volume-1 Installation Manual (Be sure to handover to customers.) Volume-2 Owner’s Manual — (Be sure to handover to customers.) Suction gas pipe Ø25 to Ø22 special-form connecting pipe Attached pipe —...
Page 30 SAFETY CAUTION WARNING Ask a shop or a professional dealer to install the air conditioner. If you will install by yourself, a fire, an electric shock, or water leak is caused. Using the tool or piping materials exclusive to R410A, install the air conditioner surely according to this Installation Manual.
Page 31: Installation Of New Refrigerant Air Conditioner
INSTALLATION OF NEW REFRIGERANT AIR CONDITIONER This air conditioner adopts the new HFC refrigerant (R410A) which does not deplete the ozone layer. • R410A refrigerant is apt to be affected by impurity such as water, oxidizing membrane, or oils because the pressure of R410A refrigerant is higher than that of the former refrigerant by approx.
Page 32: Selection Of Installation Place
SELECTION OF INSTALLATION PLACE WARNING Install the air conditioner certainly at a place bearable to weight. If strength is insufficient, the unit may fall down resulting in human injury. CAUTION Do not install the air conditioner at a place where combustible gas may leak. If gas leaks and is collected at surrounding the unit, the production of fire may be caused.
Page 33: Outdoor Unit Carrying In
Equipments Combination of outdoor unit Model name of Equivalent HP outdoor unit Unit 1 Unit 2 Unit 3 8 HP MMY-MAP0802FT8 MMY-MAP0802FT8 — — 10 HP MMY-MAP1002FT8 MMY-MAP1002FT8 — — MMY-MAP1202FT8 ∗ 12 HP MMY-MAP1202FT8 — — 16 HP MMY-AP1602FT8 MMY-MAP0802FT8 MMY-MAP0802FT8 —...
Page 34: Installation Of Outdoor Unit
INSTALLATION OF OUTDOOR UNIT WARNING Perform a specified installation work against a strong wind such as typhoon or earthquake. If the air conditioner is imperfectly installed, an accident by falling or dropping may be caused. Install the air conditioner certainly at a place bearable to weight. If strength is insufficient, the unit may fall down resulting in human injury.
Page 35 3. Do not use four stools to set the four corners. NO GOOD 4. Mount the vibration-proof rubber (vibration-proof block etc.) so that it catch whole the clamping leg. Install the vibration-proof rubber so that bent part of the fixing leg is grounded. Anchor bolt Vibration-proof rubber NO GOOD...
Page 36: Refrigerant Piping
REFRIGERANT PIPING WARNING If the refrigerant gas leaks during installation work, ventilate the room. If the leaked refrigerant gas comes to contact with a fire, the noxious gas may generate. After installation work, check that the refrigerant gas does not leak. If the refrigerant gas leaks in the room and comes to contact with a fire such as fan heater, stove, or kitchen range, the noxious gas may generate.
Page 37 Pipe connecting method of valve (Example) Using the attached pipes as shown in the following figure, braze elbows, sockets, and pipes which are procured locally. MMY- Drawing out forward Drawing out downward Pipe connection at the local site Liquid pipe Use the attached pipe for connection.
Page 38 REFRIGERANT PIPING • Coupling size of brazed pipe Connected section External size Internal size (Unit: mm) Connected section External size Internal size Standard outer dia. of Min. depth Min. thickness connected copper pipe of insertion of coupling Standard outer dia. (Allowable difference) Oval value +0.04 6.35...
Page 39 ∗ ∗ ∗ ∗ ∗ Selection of refrigerant piping Suction Discharge Liquid Item Outdoor unit model name gas side gas side side Ø22.2 Ø19.1 Ø12.7 MMY-MAP0802FT8 Pipe size of outdoor unit Ø22.2 Ø19.1 Ø12.7 — MMY-MAP1002FT8 Ø28.6 Ø19.1 Ø12.7 MMY-MAP1202FT8 Total capacity code of indoor units Suction...
Page 40 REFRIGERANT PIPING ∗ ∗ ∗ ∗ ∗ Selection of FS unit Total capacity code of indoor unit Model name Max. No. of connected indoor unit Equivalent to capacity (kW) RBM-Y1122FE Below 11.2 Š RBM-Y1802FE 11.2 to below 18.0 RBM-Y2802FE 18.0 to 28.0 or less ∗...
Page 41 Allowable length of refrigerant pipe and height difference • Cautions concerned with installation/construction Follower unit C 1) The leading outdoor unit connected with the indoor inter-unit pipe is made “A (Header unit)”. 2) Set the units in order of the outdoor capacity. (A (Header unit) >...
Page 42 REFRIGERANT PIPING Airtight test After the refrigerant piping has finished, execute an airtight test. For an airtight test, connect a nitrogen gas bomb as shown in the figure below, and apply pressure. • Be sure to apply pressure from the service ports of the packed valves (or ball valves) at liquid side, discharge gas side, balance pipe and suction gas side.
Page 43: Air Purge
Air purge For the air purge at installation time (Discharge of air in connecting pipes), use “Vacuum pump method” from viewpoint of protection of earth environment. • For protection of earth environment, do not discharge the flon gas in the air. •...
Page 44 REFRIGERANT PIPING Addition of refrigerant After vacuuming work, exchange the vacuum pump with the refrigerant bomb and then start the additional charging work of refrigerant. Calculation of additional refrigerant charge amount Refrigerant charge amount at shipment from the factory does not include the refrigerant for pipe at the local site. For refrigerant to be charged in pipe at the local site, calculate the amount and charge it additionally.
Page 45 Full opening of valve • Open valve of the outdoor unit fully. • Using 4mm-hexagonal wrench, open fully the valve rods at liquid sides. • Using a spanner, etc, open fully the valve rod of packed valve at suction gas side. •...
Page 46: Safety Caution
SAFETY CAUTION • Please read this “Safety Cautions” thoroughly before installation to install the air conditioner correctly. • The important contents concerned to the safety are described in the “Safety Cautions”. Be sure to keep them. For Indications and their meanings, see the following description. n Explanation of indications WARNING Indicates possibilities that a death or serious injury of personnel is caused by an incorrect handling.
Page 47: Electric Wiring
CAUTION Do not install the air conditioner at a place where combustible gas may leak. If gas leaks and is collected at surrounding the unit, the production of fire may be caused. Be sure to attach an earth leakage breaker; otherwise an electric shock may be caused. Using a torque wrench, tighten the flare nut in the specified method.
Page 48 ELECTRIC WIRING Electrical wiring design Do not connect power supply line between outdoor units through the incorporated terminal block. Header unit Fllower unit Fllower unit 3-phase 50Hz 380-415V Earth leakage GOOD breaker Earth L1 L2 L3 L1 L2 L3 L1 L2 L3 hand switch L1 L2 L3 L1 L2 L3...
Page 49 Compressor Voltage Model name Nominal Fan Motor Power Supply range Unit No. 1 Unit No. 2 Unit No. 3 MMY- (V-ph-Hz) Min. Max. MOCP MAP0802FT8 400-3-50 5.2 + 5.2 — 20.0 — MAP1002FT8 400-3-50 6.5 + 6.5 — 22.5 — MAP1202FT8 400-3-50 9.5 + 9.5...
Page 50 ELECTRIC WIRING • Specifications of wires for controlling 1. Connect each wire for controlling as shown below. Connect control wiring between indoor and outdoor unit to the header unit. Header unit Follower unit Follower unit U3 and U4 terminals U5 U6 U5 U6 U5 U6 are used when a central...
Page 51 n System wiring diagram Outdoor Power supply Outdoor Power supply Outdoor Power supply 380V-415V 3N~50Hz 380V-415V 3N~50Hz 380V-415V 3N~50Hz Power supply Header outdoor unit Single phase 220-240V 50Hz Follower outdoor unit Indoor unit FS unit Remote controller Central remote controller Earth terminal Pull box...
Page 52 ELECTRIC WIRING Connection of power supply wire with control wire Insert power supply wire and control wire after removing knockout of the piping/wiring panel at front side of the outdoor unit. Knockout for power supply wire Knockout for control wire Piping/wiring panel When insert power supply wire and control wire, protect power supply wire...
Page 53: Address Setup
ADDRESS SETUP In this air conditioner, it is necessary to set up the indoor address before starting the operation. Set up the address in the following procedure. CAUTION 1. Set up address after wiring work. 2. Be sure to turn on the power in order of indoor unit → outdoor unit. If turning on the power in the reverse order, a check code [E19] is output.
Page 54 ADDRESS SETUP REQUIREMENT Group control over (Example) multiple refrigerant lines • When a group control is performed over the multiple refrigerant lines, be sure to turn on the Wire systematic power supplies of all the indoor units connected in Outdoor Outdoor diagram a group in the time of address setup.
Page 55 ˆ When address setup has finished in all the lines, turn off Header unit interface P.C. board SW30-2 on the interface P.C. boards of the header units of the lines connected to the identical central control SW30 except a line with least address marker. SW30 (The terminator resistor of the wires in the central control system of indoor/outdoor are unified.)
Page 56 ADDRESS SETUP Manual address setup from remote controller In case to decide an address of the indoor unit prior to finish of indoor electric wiring work and unpracticed outdoor electric wiring work (Manual setup from wired remote controller) Arrange indoor unit in which address Turn on the power.
Page 57 Note 1) When setting the line address from the wired remote controller, do not use address 29 and 30. The address 29 and 30 cannot be set up in the outdoor unit. Therefore if they are incorrectly set up, a check code [E04] (Indoor/outdoor communication circuit error) is output.
Page 58 ADDRESS SETUP 2. When you want to know position of the indoor unit using the address • To confirm the unit numbers in a group control; <Procedure> (Operation while the air conditioner stops) The indoor unit numbers in a group control are successively displayed, and the corresponding indoor fan is turned on. VENT TEST Push...
Page 59 Change of indoor address from wired remote controller • To change the indoor address in individual operation (Wired remote controller : Indoor unit = 1 : 1) or group control (When the setup operation with automatic address has finished, this change is available.) <Procedure>...
Page 60 ADDRESS SETUP • To change all the indoor addresses from an arbitrary wired remote controller; (When the setup operation with automatic address has finished, this change is available.) Contents : Using an arbitrary wired remote controller, the indoor unit address can be changed for each same refrigerant line.
Page 61 Clearance of address (Return to status (Address undecided) at shipment from factory) Method 1 An address is individually cleared from a wired remote controller. “0099” is set up to line address, indoor address, and group address data from the wired remote controller. (For the setup procedure, refer to the above-mentioned address setup from the wired remote controller.) Method 2 Clear the indoor addresses in the same refrigerant line from the header unit.
Page 62: Setting When Connecting Multiple Indoor Units To A Fs Unit
SETTING WHEN CONNECTING MULTIPLE INDOOR UNITS TO A FS UNIT Cautions to connection of indoor unit • When connecting the multiple indoor units to a single FS unit, it is necessary to set up the Item code. Be sure to set up the Item code after setup of address. •...
Page 63: How To Set Up The Cooling Only Indoor Unit
HOW TO SET UP THE COOLING ONLY INDOOR UNIT When setting the specific indoor unit to Cooling Only unit without connecting to the flow 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.
Page 64: Test Operation
TEST OPERATION Before test operation WARNING Check valve of the refrigerant pipe of the header unit is “OPEN”. • Turn on the power and then turn on • Using 500V-megger, check there is 1MΩ or more between the case heater of the compressor. the terminal block of the power supply and the earth.
Page 65 In case of test operation on the interface P.C. board of the outdoor unit This air conditioner has a function which executes a test operation by operation of the switches on the interface P.C. board of the outdoor unit. This function is classified into “Individual test operation” which performs a test operation individually in each indoor unit and “Collective test operation”...
Page 66: Troubleshooting
TROUBLESHOOTING In addition to the check code on the remote controller of the indoor unit, a trouble of the outdoor unit can be diagnosed by 7-segment display of the control P.C. board of the outdoor unit. Make good use of this function for various checks.
Page 67 Check code Auxiliary code Check code name Outdoor 7-segment display 01: Compressor 1 side 02: Compressor 2 side Compressor breakdown Magnet switch error 01: Compressor 1 side 02: Compressor 2 side Overcurrent relay operation Compressor trouble (Lock) 01: Compressor 1 side 02: Compressor 2 side Current detective circuit system error ——...
Page 68: Accessory Parts And Parts To Be Procured Locally
Accessory parts and Parts to be procured locally Accessory parts Q’ty RBM- Part name Shape Usage Y1122FE Y1802FE Y2802FE — Installation Manual (Be sure to hand over to customers.) Attached wire For power supply from indoor unit (3-core, 6m) (For power supply) Attached wire For communication with indoor unit (5-core, 6m) (For control wiring)
Page 69 WARNING • Ask an authorized dealer or qualified installation professional to install/maintain the air conditioner. Inappropriate installation may result in water leakage, electric shock or fire. • Turn off the main power supply switch or breaker before attempting any electrical work. Make sure all power switches are off.
Page 70: Installation Of New Refrigerant Air Conditioner
INSTALLATION OF NEW REFRIGERANT AIR CONDITIONER This air conditioner adopts the new HFC refrigerant (R410A) which does not deplete the ozone layer. • R410A refrigerant is apt to be affected by impurity such as water, oxidizing membrane, or oils because the pressure of R410A refrigerant is higher than that of the former refrigerant by approx.
Page 71: Selection Of Installation Place
SELECTION OF INSTALLATION PLACE CAUTION Do not install the air conditioner at place where combustible gas may leak. If gas leaks and is collected at surrounding the unit, the production of fire may be caused. Upon customer’s approval, install the air conditioner at a place where satisfies the following conditions.
Page 72: Installation Space
SELECTION OF INSTALLATION PLACE Installation space • Make space for installation and service. (Make space to the electrical parts box cover side for service.) • When installing the unit inside the ceiling, be sure to create a check port. The check port is required when the unit is installed and serviced. (Check port: 450 × 450 or more) •...
Page 73: Inatallation Of Flow Selector Unit
INATALLATION OF FLOW SELECTOR UNIT WARNING Install the unit securely in the place to sufficiently withstand the weight of the unit. If the foundation is not sturdy enough, the unit may fall and cause personal injury. Perform a specified installation work to guard against earth quake. Improper installation may cause the unit to fall.
Page 74 INATALLATION OF FLOW SELECTOR UNIT Installing hanging bolts • Considering piping and wiring after hanging the Flow Selector Procure hanging bolts and nuts locally for unit, determine the installation position and direction. installing the unit. • After determining he installation position of the Flow Selector Hanging bolt M10 (mm) or 3/8 2 pieces...
Page 75: Refrigerant Piping
REFRIGERANT PIPING WARNING If refrigerant gas has leaked during the installation work, ventilate the room immediately. If the leaked refrigerant gas comes in contact with fire, noxious gas may be generated. After the installation work, confirm that refrigerant gas does not leak. If refrigerant gas leaks into the room and flows near a fire source, such as a fan heater, cooking stove or heating unit, noxious gas may be generated.
Page 76 REFRIGERANT PIPING <RBM-Y1122FE (Use pipes attached with the Flow Selector unit.)> Flare Attached pipe Flare Pipe procured locally Brazing Pipe procured locally Discharge gas pipe Liquid pipe Gas pipe Suction gas pipe Liquid pipe <RBM-Y1122FE, RBM-Y1802FE> Flare Flare Pipe procured locally Pipe procured locally Discharge gas pipe Liquid pipe...
Page 77 Pipe forming/End positioning Flaring 90˚ Obliquity Roughness Warp 1. Cut the pipe with a pipe cutter. 2. Insert a flare nut into pipe, and flare the pipe. As the flaring sizes of R410A differ from those of refrigerant R22, the flare tools newly manufactured for R410A are recommended.
Page 78: Gas Leak Check
REFRIGERANT PIPING Airtight test/Air purge, etc. For airtight test, air purge, addition of refrigerant, and gas leak check, follow the Installation Manual attached to the outdoor unit. REQUIREMENT Be sure to use the tool such as charge hose exclusive to R410A. Do not turn on the power until the airtight test and the vacuuming have finished.
Page 79: Electric Work
ELECTRIC WORK WARNING 1. Using the specified wires, ensure to connect the wires, and fix wires securely so that the external strength of the wires do not transmit to the connecting part of the terminals. Incomplete connection or fixation may cause fire, etc. 2.
Page 80: Connection Diagram
ELECTRIC WORK Connection diagram • Power is supplied from the connected indoor unit. • Connect the attached wires (power supply/control wiring) between the Flow Selector unit and the indoor unit. Connect wires as shown in the below figure. • If the distance between indoor unit and Flow Selector unit exceeds 5m, connect by using the extension cable kit (RBC-CBK15FE).
Page 81 System wiring diagram Outdoor Power supply Outdoor Power supply Outdoor Power supply 380V-415V 3N~50Hz 380V-415V 3N~50Hz 380V-415V 3N~50Hz Header outdoor unit Power supply 220-240V 50Hz Follower outdoor unit Indoor unit FS unit Remote controller Central remote controller Earth terminal Pull box Earth leakage breaker Open Main switch...
Page 82 ELECTRIC WORK Indoor unit See also the Installation Manual supplied with the indoor unit. • Remove the electrical parts box cover from the indoor unit. • Connect the faston (R(L) and S(N)) on the attached wire (power supply) to a free area on the R(L), S(N) terminal block for poert supply.
Page 83 2-way Air Discharge Cassette Type (MMU-AP 1WH Series) Attached wire (Power supply) Power supply Earth screw Attached wire Indoor P.C. board (Control wiring) CN081(Black) FOR INTER-UNIT FOR REMOTE CONTROL FOR AI-NET DON’T APPLY 220-240V R(L), S(N) terminal block for power supply Earth screw for Faston connection Flow Selector unit...
Page 84 ELECTRIC WORK 1-way Air Discharge Cassette Type (MMU-AP 1YH Series) Indoor P .C. board CN081 R(L), S(L) terminal block for power supply Earth screw for Flow Selector unit Cord clamp Power supply Attached wire (Control wiring) NOTE : Earth screw Attached wire 1-way Air Discharge Cassette Type (Power supply)
Page 85 Concealed Slim Duct Type (MMD-AP 1SPH Series) Control wire for flow selector CN081 (BLACK) Control wire Power supply cord flow selector Remote controller wire Cable cramp Power supply cord for unit Concealed Duct High Static Pressure Type (MMD-AP 1H Series) Indoor P.C.
Page 86 ELECTRIC WORK Under Ceiling Type (MMC-AP 1H Series) 1-way Air Discharge Cassette Type (MMU-AP 2YH Series) R(L), S(N) terminal block for power supply Attached wire Indoor P.C. board (Control wiring) Fston connection Cord clamp DON’T APPLY 220-240V FOR INTER-UNIT FOR REMOTE CONTROL R(L) S(N) CN081 (Black) Earth screw...
Page 87 High Wall Type (MMK-AP 2H Series) For the Flow Selector unit that have power supply cord, connect a power supply cable to it as mentioned below. 1. Open the air inlet grille upward. 2. Remove the four screws securing the front panel. 3.
Page 88 ELECTRIC WORK Floor Standing Concealed Type (MML-AP 1BH Series) Earth screw for Indoor P.C. board Faston connection Flow Selector unit Attached wire (Control wiring) DON’T APPLY 220-240V FOR INTER-UNIT FOR REMOTE CONTROL R(L) S(N) CN081 Attached wire (Power supply) R(L), S(N) terminal block for power supply Cord clamp Power supply...
Page 89 n Setting when connecting multiple indoor units to a FS unit Cautions to connection of indoor unit • When connecting the multiple indoor units to a single FS unit, it is necessary to set up the Item code. Be sure to set up the Item code after setup of address. •...
Page 90 WARNINGS ON REFRIGERANT LEAKAGE Important Check of Concentration Limit The room in which the air conditioner is to be NOTE 2 : installed requires a design that in the event of The standards for minimum room volume are as refrigerant gas leaking out, its concentration will follows.

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Toshiba MMU-AP0091H Owner's Manual Installation And Operation

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