Toshiba MM-A1288HT, MM-A1232HT, MM-A1176HT, MM-A1120HT, MM-A1064HT Service Manual

Service Manual

Air Conditioner – Multi Split Type System

Modular Multi System

HFCR407C

A90-0130

3

1 2

3 4 5 6 7 8

9 10 11 12 13 14 15 16 17 18 19 20

Contents

Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Outline of MMS (Modular Multi System) . . . . . . . . . . . . . . . . . . . 8

Parts Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

Construction Views – Outdoor Units . . . . . . . . . . . . . . . . . . . . . . 14

Construction Views – Indoor Units . . . . . . . . . . . . . . . . . . . . . . . . 15

Wiring Diagrams

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

Refrigerant Piping Systematic Drawings . . . . . . . . . . . . . . . . . . 25

Combined Refrigerant Piping Systematic Drawings . . . . . . . . 28

Refrigerant Cycle Schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32

Outline of Control. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33

Self Diagnostic Display Information . . . . . . . . . . . . . . . . . . . . . . 46

Control Circuit Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50

Troubleshooting

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55

Backup Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 101

Forced Function of Oil Level Detection. . . . . . . . . . . . . . . . . . . 105

Refrigerant Pipe Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 106

Trial Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 111

Exploded Views and Service Parts. . . . . . . . . . . . . . . . . . . . . . . 124

Additional Literature and Contacts. . . . . . . . . . . . . . . . . . . . . . 134

Precautions

4

1

Introduction

Read these Safety Notes carefully before installing this unit. These Safety Notes contain very important safety information. Always be sure to observe these

cautions. After installation is complete, trial the operation of the unit to make sure that it is operating

normally. Instruct the customer about how to operate the unit, and about necessary maintenance.

The dealer or a special contractor must install this unit.

Attempts to install this unit by a customer could result in leaks, electric shock, or fire. Improper installation could result in leaks, electric shock, or fire.

If this unit is installed in a small room, measures must be taken to ensure that, even in the event of a refrigerant leak, the maximum safe limit for refrigerant concentration levels in the air is not exceeded.

Consult the dealer for details on what measures can be taken to keep from exceeding the maximum safe limit. If a refrigerant leak does cause refrigerant concentration levels in the air to exceed the maximum safe limit, asphyxiation could result.

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.

Install the unit in the prescribed manner to withstand strong (hurricane-level) winds and earthquakes.

Insufficiently secure installation could allow the unit to tip over, fall, or otherwise cause an accident.

Ventilate the area if any refrigerant leaks during installation.

If the refrigerant comes into contact with an open flame, it will produce a toxic gas.

After completing installation, make sure that no refrigerant is leaking.

If the refrigerant leaks indoors and comes into contact with an open flame in a water heater, stove, oven, or other such appliance, it will produce a toxic gas.

Electrical work must be performed by a qualified electrician as described in the Installation Manual.

The unit must be connected to its own independent circuit. Inadequate circuit capacity or improper installation could result in electric shock or fire.

Wiring must be performed securely, using the prescribed cables.

The cables must be secured in a manner that prevents any force that pulls on the cables from being relayed to the terminal connectors. If the cables are not connected or secured properly, fire or other accidents could result.

The unit must be grounded.

Do not connect the ground wire to a gas pipe, water pipe, lightning rod, or telephone ground wire. When wiring the system to the main power source, follow the standards established by the local power company. Inadequate grounding can result in electric shock.

Do not install the unit in a location where combustible gases could conceivably leak.

Leaking gases that accumulate in the vicinity of the unit could be ignited by the unit.

Introduction

Components

5

1

Inverter unit Fixed-speed unit Appearance

Corresponding HP

8HP 10HP 6HP 8HP 10HP

Model name MM-A0224HT MM-A0280HT MM-A0160HX MM-A0224HX MM-A0280HX

Cooling capacity (kW) 22.4 28.0 16.0 22.4 28.0

Heating capacity (kW) 25.0 31.5 18.0 25.0 31.5

Corresponding HP 8HP 10HP 14HP 16HP 18HP 20HP 22HP 24HP 26HP 28HP 30HP 32HP 34HP 36HP 38HP 40HP 42HP 44HP 46HP

Combined Model MM-A~HT

0224 0280 0384 0440 0504 0560 0608 0672 0728 0784 0840 0896 0952 1008 1064 1120 1176 1232 1288

Cooling capacity (kW) 22.4 28.0 38.4 44.8 50.4 56.0 60.8 67.2 72.8 78.4 84.0 89.6 95.2 100.8 106.4 112.0 117.6 123.2 128.8

Inverter unit 8HP 10HP 8HP 8HP 10HP 10HP 8HP 8HP 10HP 10HP 10HP 8HP 10HP 10HP 10HP 10HP 10HP 10HP 10HP

— — 6HP 8HP 8HP 10HP 8HP 8HP 8HP 10HP 10HP 8HP 8HP 10HP 10HP 10HP 8HP 10HP 10HP — — — — — — 6HP 8HP 8HP 8HP 10HP 8HP 8HP 8HP 10HP 10HP 8HP 8HP 10HP — — — — — — — — — — — 8HP 8HP 8HP 8HP 10HP 8HP 8HP 8HP — — — — — — — — — — — — — — — — 8HP 8HP 8HP

13 16 16 18 18 20 22 24 26 28 30 32 34 36 38 40 40 40 40 Min. HP Connected 4 5 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 Max. HP Connected 10.8 13.5 18.9 21.6 24.3 27 29.7 32.4 35.1 37.8 40.5 43.2 45.9 48.6 51.3 54 56.7 59.4 62.1

Combined outdoor units

No. of connectable indoor units

Fixedspeed unit

1. Outdoor Unit

2. Outdoor Units (Combination of Outdoor Units)

(*1). Code is determined according to the capacity code of the indoor units connected. (*2). If the total capacity code value of indoor units exceeds that of outdoor units, apply the

capacity code of outdoor units.

(*3). When using a branch header, indoor units with a maximum of 6.0 capacity code in total

can be connected to each branch.

NOTE: If the length of the gas pipe exceeds 30m from the 1st branching to an indoor unit,

increase the gas pipe size by 1 size, i.e. MM-U140 = Gas Ø22.2, Liquid Ø9.5

Model name Usage Appearance

RBM-Y018 Indoor unit capacity code (*1): Total below 6.4

Y-shape branching joint

RBM-Y037 Indoor unit capacity code (*1): Total 6.4 or more and below 13.2 (*2) RBM-Y071 Indoor unit capacity code (*1): Total 13.2 or more and below 25.2 (*2) RBM-Y129 Indoor unit capacity code (*1): Total 25.2 or more (*2)

4-branching header (*3)

RBM-H4037 Indoor unit capacity code (*1): Total below 13.2

Max. 4

RBM-H4071 Indoor unit capacity code (*1): Total 13.2 or more and below 25.2

branches

8-branching header (*3) RBM-H8037 Indoor unit capacity code (*1): Total below 13.2

Max. 8

RBM-H8071 Indoor unit capacity code (*1): Total 13.2 or more and below 25.2

branches

1 set of 3 types of T-shape joint pipes as described below: The required quantity is arranged and they are combined at the site.

T-shape branching joint

(For connection of RBM-T129 outdoor unit)

Connecting pipe Corresponding dia. (mm). Qty

Balancing pipe Ø9.52 1

Piping at liquid side Ø12.7 to Ø22.2 1

Piping at gas side Ø22.2 to Ø54.1 1

3. Branching joints/headers

6

2

Operating Conditions

Summary



The units referred to within this manual conform with the protection requirements of Directives 89/336/EEC Electromagnetic Compatibility and 73/23/EEC Low voltage.



Operating conditions of the unit are as follows:

Outdoor temperature -5 ~ 43°C Cooling

-15 ~ 21°C Heating

Room Temperature 18 ~ 32°C Cooling

15 ~ 29°C Heating

Room humidity <80% Cooling

Note 1: Cooling capacity is rated at the following temperature conditions:

Indoor air inlet temperature 27°C DB, 19°C WB. Outdoor air inlet temperature 35°C DB.

Note 2: Heating capacity is rated at the following temperature conditions:

Indoor air inlet temperature 20°C DB. Outdoor air inlet temperature 7°C DB, 6°C WB.

Note 3: For details about the Outdoor unit, Indoor units or Remote Controller installation

refer to the relevant literature, i.e. Installation Instructions supplied with the units.

Note 4: Operatives handling refrigerants must be suitably qualified in accordance with local

and national codes of practice and statutory requirements.

Note 5: Legislation may regulate the removal of waste refrigerant from the systems. We advise

awareness of any regulations and duty of care. Waste refrigerant must NEVER be discharged to atmosphere.

Note 6: Electrical work should be in accordance with all relevant codes of practice and should

be carried out by suitably qualified personnel.

Note 7: Metric/Imperial pipe conversion.

1 5/8

Note 8: Within this manual:

ODU = Outdoor Unit IDU = Indoor Unit R/C = Remote Controller D.O.L. = Direct On-Line compressor INV = HP Inverter ODU FIX = HP Fixed Speed ODU DB = Dry Bulb WB = Wet Bulb Mg-Sw = Magnetic Contactor IOL = Inner Overload Relay OCR = Over Current Relay IGBT = Inverter Gate Bi-Polar Transistor

Note 9: MPaG ⇒ kgf/cm2G Conversion multiplier

10MPaG = 10.2kgf/cm2G

Diameter (mm) 6.4 9.5 12.7 15.9 19.0 22.0 28.6 34.9 41.3 54.1 Nominal diameter (inch)

1

⁄4

3

⁄8

1

⁄2

5

⁄8

3

⁄4

7

⁄8 11⁄8 13⁄8 15⁄8 21⁄8

Summary

Operating Conditions

7

2

1. Model name

2. Range of combined units

No. of combined units : 1 to 5 units Capacity range : Equivalent to 38.4kW type (14HP) to 128.8kW (46HP)

3. Restriction for combination units

(1) The Inverter Unit should have the maximum capacity among all units in

that combination.

(2) The 16.0kW (6HP) fixed- speed unit is available only with the combination of 38.4kW

(14HP) and 60.8kW (22HP). (It cannot be used for any other combination.)

4. Mode priority

This Outdoor Unit is set to operate with the Heating mode taking precidence. This precidence can be switched between Heat and Cool mode using the DIP switch 07 on the Outdoor Unit Interface PCB (MCC-1343-01) as follows:

T – Inverter X – Fixed Speed

0280 – 28.0kW (10HP) 0224 – 22.4kW (8HP) 0160 – 16.0kW (6HP)

C – Cooling H – Heating

MM–A0280HT

INDOOR

OUTDOOR

A – Outdoor

Modular Multi

028 – 2.8kW (1HP) 042 – 4.2kW (1.5HP) 056 – 5.6kW (2HP) 080 – 8.0kW (3HP) 112 – 11.2kW (4HP) 140 – 14.0kW (5HP)

MM–TU056

Modular Multi

B – Built-In Duct Type C (CR)– Ceiling Type (IR Remote) K (KR) – High Wall Type (IR Remote) N – Carcase Type S (SR) – Low Wall Type (IR Remote) SB – Built-In Slim Duct Type TU – 2 Way Cassette Type U – 4 Way Cassette Type

ON

OFF

ON

OFF

Heat Priority (factory set) Cool Priority

9

3

8

3

Outline of MMS (Modular Multi System)

• Non-polarized control wiring between outdoor and indoor units

• Wiring diagnosis system

[Example of wiring diagnosis]

Use the switches on the microcomputer PCB of the outdoor unit.

• Detects wiring to the indoor unit b4 which should not be in system A.

• b4 is missing in system B.

Outdoor unit

Indoor unit

Piping

Wiring

System A

System B

Outdoor unit

1st branching section

Height difference between indoor

unit and outdoor unit: 30m

Height difference between indoor

unit and outdoor unit: 50m

From 1st branching to the farthest indoor unit: 50m

Allowable pipe length : 100m real length (Equivalent to 125m)

Outdoor

unit

Outdoor

unit



Compact design

The design of the Toshiba MMS outdoor unit allows for easy unit maneuvering into any standard lift. Its size also allows it to be easily installed in limited spaces.



Largest system capacity

Toshiba’s Multi Modular System can be combined up to 128.8kW (46 HP).



Advanced bus communication system

Wiring between indoor and outdoor unit is a simple 2-wire system. Communication address is also automatically configured. A default test mode operation is available.



Self diagnostic system

Comprehensive troubleshooting code enables quick identification of problems arising.



High lift design

Real pipe length of 100m (equivalent length 125m) and vertical lift of 50m is made possible with Toshiba’s Multi Modular System. Vertical lift between indoor units of 30m is the highest in the market. This allows for greater flexibility in the location of the system.



Multiple indoor units

Indoor units with different capacities and configurations can be combined up to 135% of the outdoor unit capacity. A maximum of 40 indoor units can be combined with the 46 HP outdoor module.



Intelligent control

Toshiba’s MMS intelligent controls and modulating valves deliver the required capacity, according to the load variation from 50% to 100%. The intelligent controls and modulating valves limit or increase the cooling/heating capacity dynamically so humidity and temperature are kept in the comfort zone.

Outline of MMS (Modular Multi System)



Branching

Line Branching

Header Branching

Line + Header Branching

Line Branching after Header Branching

Combination of line and header branching is highly flexible. This allows for the shortest design route possible, thereby saving on installation time and cost. Line/header branching after header branching is only available with Toshiba’s Multi Modular System.

Outdoor Unit

Indoor Unit

Branching joint

Branching

Header

MMS Only

8F

7F

2F

1F

10

4

Parts Specifications

Indoor Units

Type Appearance Model name Capacity code

Cooling Capacity Heating Capacity

(kW) (kW)

MM-U056 2 5.6 6.4 MM-U080 3 8.0 9.6 MM-U112 4 11.2 12.8 MM-U140 5 14.0 15.8

MM- TU028 1 2.8 3.2 MM- TU042 1.5 4.2 4.8 MM- TU056 2 5.6 6.4

MM-SB028 1 2.8 3.2

MM-B056 2 5.6 6.4 MM-B080 3 8.0 9.6 MM-B112 4 11.2 12.8 MM-B140 5 14.0 15.8

MM-C/CR042 1.5 4.2 4.8 MM-C/CR056 2 5.6 6.4 MM-C/CR080 3 8.0 9.6 MM-C/CR112 4 11.2 12.8 MM-C/CR140 5 14.0 15.8

MM-K/KR042 1.5 4.2 4.8 MM-K/KR056 2 5.6 6.4 MM-K/KR080 3 8.0 9.6

MM-N028 1 2.8 3.2 MM-N042 1.5 4.2 4.8 MM-N056 2 5.6 6.4 MM-N080 3 8.0 9.6

MM-S/SR056 2 5.6 6.4 MM-S/SR080 3 8.0 9.6

4 Way Cassette Type ‘U’

2 Way Cassette Type ‘TU’

Built-In Slim Duct Type ‘SB’

Built-In Duct, Type ‘B’

Ceiling Type ‘C’

High Wall Type ‘K’

Carcase Type ‘N’

Low Wall Type ‘S’

11

4

Parts Specifications

Outdoor Units

COMPRESSOR

MODEL

MM-A0280HT MM-A0224HT MM-A0280HX MM-A0224HX MM-A0160HX

Model Name MG1450CW-21B YG1800CW-B1 YG1700CW-B1 YG890C-B1 Motor Type 3 – Phase induction motor Power Supply 380 – 415V, 3 – Phase, 50Hz Output (kΩ) 7.5 7.5 7.5 7.5 4.1 Pole (P) 2/2 (INV/Fixed) 2/2 (Fixed/Fixed) 2 Coil Resistance (W) 1.18/2.25 (INV/Fixed) 2.25/2.25 (Fixed/Fixed) 2.250 Comp. Oil Name NISSEKI RB68AF VG 74 Amount of Oil (ml) 7500 7500 7500 7500 2000 Inner Over-load Relay Opens: 115±5 °C Closes: 93±10°C

PARTS NAME SPECIFICATION

Model Name STF-200-350A

Motor Type 1-Phase induction motor

Fan Motor

Power Supply AC 220-240V, 1 Phase, 50Hz

Output (W) 400 Current (A) 4.81~5.89

Pole (P) 6

High Pressure Switch

Model Name INV=ACB-JB128 FIX=ACB-JA64

Operating Pressure (kgf/cm2G) Operation: 3.2, Reset 2.55

High Pressure Sensor

Model Name 150NH4-H

Operating Conditions 0~3.33MPa

Low Pressure Sensor

Model Name 150NH4-L

Operating Conditions 0~0.98MPa Compressor Case Heater AC240V, 74W Accumulator Case Heater AC240V, 29W Discharge Temperature Sensor At 50ºC=18.1KΩ, At 100ºC=3.35KΩW, Suction Temperature Sensor At 0ºC=34.6KΩ, At 25ºC=10.0KΩ, At 50ºC=3.4KΩ Pulse Modulating Valve L12A-03, DC12V Pulse Modulating Valve (For Cooling Bypass) A12A-15, DC12V 2-way Valve VPV-603D, Coil 240V 2-way Valve NEV-202D, Coil 240V

4-WAY VALVE

MODEL

MM-A0280HT MM-A0224HT MM-A0280HX MM-A0224HX MM-A0160HX

Model Name CHV-0712 CHV-0712 CHV-0712 CHV-0712 CHV-0401 Coil Specification AC240V AC240V AC240V AC240V AC240V

MM-A0280HT, MM-A0224HT, MM-A0280HX, MM-A0224HX, MM-A0160HX

12

4

Parts Specifications

Indoor Units

No. PARTS NAME TYPE SPECFICATIONS

1 Fan Motor STF-200-140-4F Output (rated) 140W, 4 pole, 200V, 1 Phase 50Hz 2 Running Capacitor – fan motor EAG40M106UF AC 400V 10µF 3 Pulse Motor Valve EDM-B60YPTF-7B-A Capacity: 60

Built-In Duct:MM-B140

No. PARTS NAME TYPE SPECFICATIONS

1 Fan Motor STF-200-120-4B Output (rated) 120W, 4 pole, 200V, 1 Phase 50Hz 2 Running Capacitor – fan motor EAG40M505UF AC 400V 5µF 3 Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40

Built-In Duct:MM-B112

No. PARTS NAME TYPE SPECFICATIONS

1 Fan Motor STF-200-100-4B Output (rated) 100W, 4 pole, 200V, 1 Phase 50Hz 2 Running Capacitor – fan motor EAG40M505UF AC 400V 5µF 3 Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40

Built-In Duct:MM-B080

No. PARTS NAME TYPE SPECFICATIONS

1 Fan Motor STF-230-60-4A Output (rated) 60W, 4 pole, 230V, 1 Phase 50Hz 2 Running Capacitor – fan motor EEP2G405HQA114 AC 400V 4µF 3 Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40

Built-In Duct:MM-B056

No. PARTS NAME TYPE SPECFICATIONS

4 Transformer TT-03-1 DC 16.3V 0.5A/AC 11.6V 0.15A 5 Pulse Motor EDM-MD12TF-3 DC12V 6 Pressure Sensor 150/100NH6-D Power Voltage DC 12V

7 Sensor for room temperature TA

Maximum input °C 25 50 38mA (at 25°C) kΩ 10 3.45

8 Sensor for heat exchanger Tc1

Maximum input °C -12 0 25 50 34mA (at 25°C) kΩ 62.3 32.8 10 3.6

9 Sensor for heat exchanger Tc2

Maximum input °C 0 25 50

26mA (at 25°C) kΩ 34.6 10 3.4 10 Control PCB CM00C02 AC 220-240V 11 Power PCB P00RC01 AC 220-240V

Built-In Duct: MM-B140, MM-B112, MM-B080, MM-B056

No. PARTS NAME TYPE SPECFICATIONS

1 Fan Motor SMF-230-34-4J Output (rated) 34W, 4 pole, 230V, 1 Phase 50Hz 2 Running Capacitor - fan motor EEP2H105HQA105 AC 500V 1.0µF 3 Pulse Motor Valve EDM-B25YPTF-7B-A Capacity: 25 4 Transformer TT-03-1 DC 16.3V 0.5A/AC 11.6V 0.15A 5 Pulse Motor EDM-MD12TF-3 DC12V 6 Pressure Sensor 150/100NH6-D Power Voltage DC 12V

7 Sensor for room temperature TA

Maximum input °C 25 50

38mA (at 25°C) kΩ 10 3.45

8 Sensor for heat exchanger Tc1

Maximum input °C -12 0 25 50

34mA (at 25°C) kΩ 62.3 32.8 10 3.6

9 Sensor for heat exchanger Tc2

Maximum input °C 0 25 50

26mA (at 25°C) kΩ 34.6 10 3.4 10 Control PCB CM00C02 AC 220-240V 11 Power PCB P00RC01 AC 220-240V

Built-In Slim Duct: MM- SB028

13

4

Parts Specifications

Indoor Units

No. PARTS NAME TYPE SPECFICATIONS

1 Fan Motor MMF-230-36A Output (rated) 36W, 6 pole, 230V, 1 Phase 50Hz 2 Running Capacitor – fan motor EVM45M305UF AC 450V, 3.0µF 3 Pulse Motor Valve EDM-B60YPTF-7B-A Capacity: 60

4-Way Cassette: MM-U140

No. PARTS NAME TYPE SPECFICATIONS

1 Fan Motor MMF-230-36A Output (rated) 36W, 6 pole, 230V, 1 Phase 50Hz 2 Running Capacitor – fan motor EEP2W255HQA113 AC 450V 2.5µF 3 Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40

4-Way Cassette: MM-U112

No. PARTS NAME TYPE SPECFICATIONS

1 Fan Motor MMF-230-28A Output (rated) 28W, 6 pole, 230V, 1 Phase 50Hz 2 Running Capacitor – fan motor EEP2W205HQA107 AC 450V 2.0µF 3 Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40

4-Way Cassette: MM-U080

No. PARTS NAME TYPE SPECFICATIONS

1 Fan Motor MMF-230-28A Output (rated) 28W, 6 pole, 230V, 1 Phase 50Hz 2 Running Capacitor – fan motor EEP2H105HQA105 AC 500V 1.0µF 3 Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40

4-Way Cassette: MM-U056

No. PARTS NAME TYPE SPECFICATIONS

4 Transformer TT-03-1 DC 16.3V 0.5A/AC 11.6V 0.15A 5 Pulse Motor EDM-MD12TF-3 DC12V 6 Pressure Sensor 150/100NH6-D Power Voltage DC 12V

7 Sensor for room temperature TA

Maximum input °C 25 50

38mA (at 25°C) kΩ 10 3.45

8 Sensor for heat exchanger Tc1

Maximum input °C -12 0 25 50

34mA (at 25°C) kΩ 62.3 32.8 10 3.6

9 Sensor for heat exchanger Tc2

Maximum input °C 0 25 50

26mA (at 25°C) kΩ 34.6 10 3.4 10 Control PCB CM00C02 AC 220-240V 11 Power PCB P00RC01 AC 220-240V

4-Way Cassette: MM-U140, MM-U112, MM-U080, MM-U056

130

145

140

170

125

64

20

65

35

60

115

173

14

5

Construction Views

Outdoor Units

MM-A0280HT, MM-A0280HX, MM-A0224HT, MM-A0224HX, MM-A0160HX

700

990

790

500

1700

1560

700 9088

610 100

700

750

100

630 80

755

80

245

190

755

235

Model

ØA ØB ØC

mm mm mm

MM-A0280HT, MM-A0280HX 22.2 12.7 9.52 MM-A0224HT, MM-A0224HX 22.2 12.7 9.52 MM-A0160HX 22.2 9.52 9.52

4-15 x 20 (Slot)

Fixing bolt pitch

(including fixed leg)

Grounding part of bottom plate

Base

Fixing bolt pitch

Base

Fixing bolt pitch

Refrigerant pipe connecting port (Gas side) braze connection (ØA)

Refrigerant pipe connecting port (Liquid side) flare connection (ØB)

Balance pipe connecting port flare connection (ØC)

(Slot pitch)

2-60 x 150 Slot (for transport)

(knock out) Refrigerant pipe connecting port (Liquid side)

Balance pipe connecting port

Refrigerant pipe connecting port (Gas side)

(knock out)

Details of piping

connections

Base bolt position

Note: All dimensions in (mm)

15

6

Construction Views

Indoor Units

15

Built-In Duct MM-B056, MM-B080, MM-B112, MM-B140

200

450

300-400

Inspection hole

Provide an inspection hole in this position

Ensure that there is sufficient space around the indoor unit for installation and servicing

Indoor unit

Model A B E ØF ØG H J K M N MM-B056 700 750 780 12.7 6.4 252 280 280 1 2

MM-

B080 1,000 1,050 1,080 15.9 9.5 252 580 290 2 3

MM-B112, B140 1,350 1,400 1,430 19.0 9.5 252 930 310 3 4

(Gas ØF)

Hanging Bolt Pitch B

Refrigerant Pipe Connection

Unit Dimension A

Hanging Bolt 4-M10 Provided at site

Nx Ø200 Air Outlet

Drain pipe connection (inner diameter 32)

(diameter 32 minimal for PVC pipes)

Refrigerant pipe connection (Liquid ØG)

Hanging Bolt Pitch:565

Unit Dimension:800

J = M x K

(H)

6 x Ø4 holes (Ø160)

Fresh air inlet Ø125 cut-out (other side)

Filter kit

(Unit: mm)

16

6

Construction Views

Indoor Units

Built-In Slim Duct MM-SB028

158

45

57

81

333

700

450

125

12

150

200

500

480

397

700

750

800

220

700

150

150150

150

342.5

75

37.5

480

220

265

276

331

364

391

480

200

150

35

Refrigerant pipe

connection

(Gas Ø12.7)

Refrigerant pipe

connection

(Liquid Ø6.4)

Washable filter

Air outlet

Air inlet

Filter

Hanging bolt pitch

Hanging bolt

pitch

Unit dimension

Optional Air Flow (Lower air inlet)

Shelter board

Air

flow

Air flow

Drain pipe connection

(1" BSP threaded connection)

Electrical box

(PCB, Transformer and MF Capacitor)

17

6

Construction Views

Indoor Units

4-Way Cassette MM-U056, MM-U080

195

106

298

138

160

259

30

39

20

30

40

536

405 400

268 195

536

130

30

940

80

240

138

185

170

100

73

140

200

80

10

30

6

32

130

80

10

30

2

Knockout for side ducts Ø150 (both sides)

Ceiling

Drain pipe connection (1" BSP threaded

connection)

Wiring connection (Gland plate 3xØ20 holes)

Refrigerant pipe connection (Gas ØA)

Refrigerant pipe connection (Liquid ØB)

Ø150

Ø144

Ø30

Ø97

Ø100

Ø200

6-Ø6

4-Ø6

Ø

1

8

0

Ø

1

3

0

Ø

1

4

45°

Ø180

45°

Side outlet duct size

Fresh air inlet duct size

Condensate pipe 1" BSP threaded connection

Fresh air inlet

620 Hanging bolt pitch

820 External cassette dimension

880 Ceiling opening

940 Panel dimension

800 Hanging bolt pitch

820 External cassette dimension

880 Ceiling opening

940 Panel dimension

Model (MM-) U056 U080

ØA 12.7 15.9 ØB 12.7 9.5

18

6

Construction Views

Indoor Units

4-Way Cassette MM-U112, MM-U140

30

202

941 106

210

348

309

138

30

39

20

106

40

30

610

605

940

30

130

940

1350

80

240

138

185

170

100

73

140

200

80

10

30

6

32

130

80

10

30

2

Knockout for side ducts Ø150 (both sides)

Ceiling

Ceiling panel

Drain pipe connection (1" BSP threaded

connection)

Wiring connection (Gland plate 3xØ20 holes)

Refrigerant pipe connection (Gas side Ø19.0)

Refrigerant pipe connection (Liquid side Ø9.5)

Ø150

Ø144

Ø30

Ø97

Ø100

Ø200

6-Ø6

4-Ø6

Ø

1

8

0

Ø

1

3

0

Ø

1

4

45°

Ø180

45°

Side outlet duct size

Fresh air inlet duct size

Condensate pipe 1" BSP threaded connection

Fresh air inlet

620 Hanging bolt pitch

820 External cassette dimension

880 Ceiling opening

940 Panel dimension

800 Hanging bolt pitch

820 External cassette dimension

880 Ceiling opening

940 Panel dimension

19

7

Wiring Diagrams

Outdoor Units

Inverter Unit (10HP, 8HP) MM-A0280HT, MM-A0224HT

Symbol Part Name

CM 1, 2 Compressor

FM Fan motor

52C

1, 2 Electromagnetic contactor

for compressor

49C 1, 2 Inner overload relay

51C Overload relay

PMV 1, 2, 3 Electronic flow control valve

63H 1, 2 High pressure switch

RC Running capacitor

SV Two-way valve

20SF Four-way valve

Tr Transformer

AH Accumulator heater

Temperature sensor

Ferrite Core

FL

1, 2, 3 Fuse (20 AMP)

42, 2

3A, 3B, 3C

TD1,2 TE

TK1,2, 3 TS

Parts Layout

Filter Board

Posistor

Pressure

Sensor

PD

Pressure

Sensor

PS

Reactor

Electrolytic

Capacitor

Tr

(Inverter)

IPDU Board

Isolator

1. The dashed line indicates wiring on the site.

2. and indicates terminal blocks and the

numbers within them are terminal numbers.

3. indicates a printed circuit board.

Power Supply

50H

z

3N~380/415V

ORG

12

BLK

(BLK)

T03

CN10

(WHI)

CN07

BLU

D406

PO4

PO5

CN09

CN08

CN11

BLK

CN01

RED

01

1342

MCC

CN02

WHI

CN15

CN16

CN14

T02

CN03

BLK

(BLK)

(BLU)

CN04

CN501

CN06

33

11

33

11

33

11

RED

GRY

RED

BLU

ORG

BLK

FL3

ORG

BLK

12345

BLU

WHI

(WHI)

YEL

ORG

BLK WHI RED

CM1

49C1

63H1

BLK WHI BLU

RED

PINK

(WHI)

WHI WHI

BLU

Posistor

FL1

52C1

FL2

FL3

MCC-1342-01

RC

51C2

52C2

N

L1 L2 L3

MCC-1366-01

X YP Q

Power Supply

Electolytic

Capacitor

MCC-1343-03

U

RED

D

R

E

R

D

E

R

FL1

FL2

RED

WHI

01

-

CN17

1366

-

CN01

MCC

REDREDRED

WHI

CN18

CN02

03

1343

MCC

3 3

CN317

BLK

(WHI)

RED

TK2

BLU

(BLU)

BLK

CN515

BLU

BLK

3

1

3

1

WHI

RED

CN403

CN402

WHI

(WHI)

RED

1 3

CN400

GRY

BLK

1 3

(BLU)

CN401

5 3 1

GRY

ORG

(BLK)

CN307

5 3 1

BRN

5 3 1

PUR

RED

BLK

(WHI)

CN308

5 3 1

BRN

GRY

1 1

CN304

BLK

1 2 3 4

BLK

63H2

(RED)

GRY

YEL

W V U

51C 52C1

(WHI)

WHI

RC

PNK

RED

FM

4 2 1

BLK

GRY

4 2 1

GRY

BLK

WHI

RED

GRY

Y

X

Q

P

ORG

(RED)

12

ORG

BLK WHI RED

N

L3

L2

L1

CM2

N T1 T2 T3 E

N L1 L2 L3 E

49C2

(D.O.L.)

TK1

BLK

RED

431 431

(RED)

CN501

BLK

(GRN)

BLK

3 1

TD1 TD2 TS1

PMV

3 1

CN507

BLK

3 1

BLK

3 1

(WHI)

CN502

BLK BLK

3 1

(RED)

CN503

BLK BLK

21

(WHI)

CN504

BLK

21

BLK

21

(BLU)

CN505

(WHI)

CN600

6 5 4 3 2 1

21

(BLU)

CN601

21

(WHI)

CN602

WHI YEL ORG

3

BLU

(RED)

RED

CN302

6 5 4 3 2 1

GRY

WHI YEL ORG

2

BLU

(WHI)

CN301

6 4 3 2 1

RED

WHI YEL ORG

1

BLU

(WHI)

CN300

6 4 3 2 1

RED

TK3

TE

V

BLU

S

RED

52C2

GRY

BLK

GRY

BLK

3 1

GRY

CN23

CN19

CN20

RED

3 1

WHI

CN22

CN04

CN03

(WHI) (BLU)

BLK

GRY

BLU

BLK

RED

WHI

432 432

(BLU)

CN500

12

WHI

(WHI)

CN604

3

(WHI)

3

1 1

CN100

BLK

3

1

3

1

(BLK)

CN516

1 2

SW03 SW02 SW01

SW09

ON

D716 D717 D715D714

1 2

ON

1 2 3 4

ON

1 2 3 4

ON

SW04

SW08

SW07

SW06

SW05

Interface Control PC Board

D801

D802

ORG

(BLU)

(RED)

3 3

1 1

CN316

BLU

ORG

20SF

AH

(BLU)

BLU

5 5

7 7

BLU

SV42

(BLK)

3 3

1 1

7 7

5 5

CN312

CN311

BLU

SV2

SV3A

BLU

1 1

(BLU)

3 3

BLU

SV3B

CN313

BLU

1 1

(BLK)

3 3

BLU

SV3C

CN314

Q P

20

7

Wiring Diagrams

Outdoor Units

Power Supply

50H

z

3N~380/415V

Isolator

Pressure

Sensor

PD

Pressure

Sensor

PS

Tr

Symbol Part Name

CM

1, 2 Compressor

FM Fan motor

52C

1, 2 Electromagnetic contactor

for compressor

49C 1, 2 Inner overload relay

51C 1, 2 Overload relay

PMV 1, 2, 3 Electronic flow control valve

63H 1, 2 High pressure switch

RC Running capacitor

SV Two-way valve

20SF Four-way valve

CH Crank case heater

Tr Transformer

AH Accumulator heater

Temperature sensor

Ferrite Core

41, 42, 2

3A, 3B, 3C

TD1,2 TE

TK1,2, 3 TS

Surge

Absorber

Parts Layout 10,8 HP (Fixed)

1. The dashed line indicates wiring on the site.

2. and indicates terminal blocks and the

numbers within them are terminal numbers.

3. indicates a printed circuit board.

Fixed Speed Unit (10-HP, 8HP) MM-A0280HX, MM-A0224HX

TK3

TD1

TD2 TS TE

PMV

(BLU)

5 5

BLU

3 3

(WHI)

D802

BLU

SV42

BLU

CN100

7 7

TK1

BLK

3

1

3

1

(BLK)

CN516

1 2

SW09

SW03 SW02 SW01

03

1343

-

ON

D716 D717 D715D714

1 2

ON

1 2 3 4

ON

1 2 3 4

ON

SW04

SW08

SW07

SW06

SW05

MCC

Interface Control PC Board

(BLK)

3 3

1 1

CN311

BLU

SV2

5 5

7 7

BLU

SV3A

CN312

1 1

BLU

(BLU)

3 3

BLU

SV3B

CN313

BLU

1 1

(BLK)

3 3

CN314

BLU

SV3C

ORG

(WHI)

(RED)

3 3

1 1

ORG

CN316

3 3

BLU

ORG

CN315

AH

BLK

RED

WHI

CN501

CN507

CN502

CN503

CN504

CN505

CN601

CN302

CN301

CN300

432 432

(BLU)

12

BLU

CN500

1 1

WHI

(WHI)

CN604

D801

3 3

BLU

431 431

(RED)

BLK

3 1

BLK

(GRN)

321

BLK

3 1

BLK

3 1

BLK

(RED) (WHI)

BLK

21

BLK

(WHI)

BLK

21

BLK

(BLU)

21

(BLU)

21

WHI YEL ORG

3

BLU RED

(RED)

GRY

6 5 4 3 2 1

WHI YEL ORG

2

BLU

(WHI)

RED

6 4 3 2 1

WHI YEL ORG

1

BLU

(WHI)

RED

6 4 3 2 1

SV41

CH

GRY GRY

P Q

P QP Q

(BLU)

BLU

20SF

1 1

01

-

1357

-

MCC

(BLU)

CN317

3 3

CN02

CN01

BLK

3

CN515

3

(WHI)

(BLU)

(RED)

(BLU)

(BLK)

(WHI)

1 1

3 1

TK2

(WHI)

BLK

CN03

(BLU)

3 1

(WHI)

BLK

1 1

CN403

CN402

CN400

CN401

CN305

CN306

CN307

CN308

CN304

1 3

5 3 1

RED

BLU

GRY

PUR

BLK BRN

1 2 3 4

1234

GRY ORG

PUR BLK

BRN

(RED)

BRN

RC

GRY

YEL

ORG

BLK

ORG

GRY

51C1 52C1

BRN

RED

1 2 3 4

WHI

RED

BLK WHI RED

BLK

WHI

RED

63H1

(BLK)

4 2 1

(WHI)

4 2 1

GRY

RED

YEL

BLK WHI RED

12

(RED)

49C1

BLK

63H2

W V

U

51C2 52C2

FM

L3

L2

L1

CM1

ORG

N

(D.O.L.)

12

(BLK)

BLK WHI RED

49C2

CM2

N T1 T2 T3 E

N L1 L2 L3 E

(D.O.L.)

RED

WHI

GRY

WHI RED

BLK

GRY

BLK

WHI

RED

MCC-1357-01

RC

MCC-1343-03

P Q

N

L1 L2 L3

52C1

51C1

U V W

R S T

Tr

52C251C2

U V W

R S T

21

7

Wiring Diagrams

Outdoor Units

5 3 1

ON

1 2 3 4

SW06

ON

1 2 3 4

SW07

SW04

SW05

SW03 SW02 SW01

ON

1 2

SW08

ON

1 2

SW09

D716 D717 D715D714

CN311

CN312

CN313

CN314

CN315

CH

BLU

(BLU)

(BLK)

(BLU)

(BLK)

BLU

(WHI)

(RED)

(BLU)

CN316

CN317

CN304

ORG

AH

ORG

1 1

3 3

(WHI)

RED

BLK

CN03

CN01

CN02

MCC

-

1357

-

01

CN300

CN302

D801

D802

RED

BLU

ORG

YEL

WHI

GRY

RED

BLU

ORG

YEL

WHI

3 1

(WHI)

(RED)

BLK

(BLU)

CN501

CN500

CN100

CN516

TK1

TK3

TD1

TS TE

CN507

CN502

CN601

CN505

CN504

BLK

(BLU)

(WHI)

(GRN)

(RED)

(BLU)

(WHI)

(BLK)

RED

BLK

WHI

3 1

321

3 1

431

432

3

1

3

1

TK2

CN306

RED

(RED)

51C1 52C1

RED

WHI

BLK

49C1

YEL

63H1

GRY

(

D.O.L.

)

(RED)

GRY

ORG BRN

(RED)

BRN

BLK

PUR

GRY

RED

WHI

BLU

BLK

1234

CN515

(BLU)

CN402

CN403

CN305

CN401

CN400

(WHI)

(BLU)

WHI

(BLU)

5 3 1

BLK

3

1

3

1

1 3

CM1

12

RC

4 2 1

L1

L2

L3

N

RED

WHI

BLK

GRY

RED

WHI

4 2 1

RED

WHI

BLK

(WHI)

GRY

1 2 3 4

5 3 1

BLK

3

1

3

1

21

6 5 4 3 2 1

PMV

3

6 4 3 2 1

PMV

1

1 1

3 3

5

7

1 1

3 3

SV2

SV41

SV3A

7 7

5 5

1 1

3 3

1 1

3 3

SV3C

SV3B

1 1

3 3

1 1

3 3

1 1

3 3

20SF

1 1

3 3

FM

N T1 T2 T3 E

N L1 L2 L3 E

BLU

(WHI)

(BLU)

P Q

P QP Q

5

7

6 4 3 2 1

RED

BLK

GRY

BLK

5 3 1

Interface Control PC Board

MCC

-

1343

-

03

CN604

(WHI)

12

Power Supply

50H

z

3N~380/415V

Isolator

Surge

Absorber

Pressure

Sensor

PD

Pressure

Sensor

PS

Tr

Symbol Part Name

CM 1 Compressor

FM Fan motor

52C

1 Electromagnetic contactor

for compressor

49C 1 Inner overload relay

51C 1 Overload relay

PMV 1, 3 Electronic flow control valve

63H 1 High pressure switch

RC Running capacitor

SV Two-way valve

20SF Four-way valve

CH Crank case heater

Tr Transformer

AH Accumulator heater

Temperature sensor

Ferrite Core

41, 2

3A, 3B, 3C

TD1 TE

TK1,2, 3 TS

Parts Layout 6 HP (Fixed)

1. The dashed line indicates wiring on the site.

2. and indicates terminal blocks and the

numbers within them are terminal numbers.

3. indicates a printed circuit board.

Fixed Speed Unit (6HP) MM-A0160HX

MCC-1343-03

MCC-1357-01

RC

P Q

N

L1 L2 L3

Tr

1

52C

U V W

R S T

51C1

22

7

Wiring Diagrams

Indoor Units

L

N

RED

WHI

1

3

ORN

2

5

6

BLU

YEL

RED

YEL

BLU

ORN

BLK

CN03

CN07 CN25

CN51

55

33

11

22

44

66

CN27

CN50 CN16

BLK

BLU

ORN

RED WHI

RED

WHI

BLK

CN26

55

33

11

22

44

66

WHI

BLU

55

33

11

22

CN10

WHI

BLU

1

3

5

1

2

1

2

CN01 CN12

YEL

BLK

WHI

33

114422

CN02

B

A

C

B

A

C

ORN

YEL

BLU

CN04

22

11

WHI

CN05

22

11

BLU

CN20

22

11

YEL

22

44

66

11

CN23

RED

GRN

WHI

BLK

1

2

31 31

1

2

CN101 CN25 CN08 CN09 CN11

1

2

3

4

5

6

WHI

YEL

ORN

BLU

BRN

RED

6

4

3

1

2

5

WHI

YEL

ORN

BLU

BRN

RED

BLK

Q

P

GRY

Q

P

4

RY01

RY02 RY03 RY04

33

11

FM

1

3

5

7

9

1

3

5

33

11

44

22

1

3

1

2

F

HMLUL

MCC-1355-01

TR

CN28

22

TA

TC2

TC1

PS

MCC-1361-01

PMV

RED

2

RED

7

8

9

BRN

BLK

GRN/YEL

RC

WHI

GRY

1

3

ORN

2

5

6

BLU

YEL

ORN

RED

4

FM

1

3

5

7

9

RED

7

8

9

BRN

BLK

GRN/YEL

RC

WHI

GRY

2

4

6

8

BRN

BLK

YEL

BLK

ORN

BLU

YEL

RED

FC

Built-In Duct MM-B140, MM-B112, MM-B080, MM-B056

Symbol Name

F Fuse (PCB)

FM Fan Motor

PMV Pulse Modulating Valve

PS Pressure Sensor

RC Running Capacitor

RY01~RY04

Relay

TA Temperature Sensor

TC1 Temperature Sensor

TC2 Tempterature Sensor

TR Transformer

FC Ferrite Core

Power Supply

220/240

~50Hz

Remote

Controller

(Optional)

Communication

Increase Fan Speed Option

Connector Assembly

(Accessory)

1. The dashed line indicates wiring on the site.

2. and indicates terminal blocks and the

numbers within them are terminal numbers.

23

7

Wiring Diagrams

Indoor Units

L

N

RED

WHI

GRN/YEL

1

3

BLK

2

5

6

ORN

BLU

RED

YEL

WHI

RC

RED

YEL

BLU

ORN

BLK

CN07

CN03

CN07 CN25

CN51

55

33

11

22

44

66

CN27

CN50 CN16

BLK

BLU

ORN

RED WHI

RED

WHI

BLK

CN26

55

33

11

22

44

66

WHI

BLU

55

33

11

22

CN10

WHI

BLU

1

3

5

1

2

1

2

CN01 CN12

YEL

BLK

WHI

33

114422

CN02

B

A

C

B

A

C

ORN

YEL

BLU

CN04

22

11

WHI

CN05

22

11

BLU

CN20

22

11

YEL

22

44

66

11

CN23

RED

GRN

WHI

BLK

1

2

31 31

1

2

CN101 CN25 CN08 CN09 CN11

1

2

3

4

5

6

WHI

YEL

ORN

BLU

BRN

RED

6

4

3

1

2

5

WHI

YEL

ORN

BLU

BRN

RED

BLK

Q

P

GRY

Q

P

4

RED

RY01

RY02 RY03 RY04

33

11

FM

1

3

5

7

9

1

3

5

33

11

44

22

1

3

1

2

F

HMLUL

MCC-1355-01

TR

CN28

22

TA

TC2

TC1

PS

MCC-1361-01

PMV

WHI

GRN/YEL

FC

Built-In Slim Duct MM-SB028

Symbol Name

F Fuse (PCB)

FM Fan Motor

PMV Pulse Modulating Valve

PS Pressure Sensor

RC Running Capacitor

RY01~RY04

Relay

TA Temperature Sensor

TC1 Temperature Sensor

TC2 Tempterature Sensor

TR Transformer

FC Ferrite Core

Power Supply

220/240

~50Hz

Remote

Controller

(Optional)

Communication

1. The dashed line indicates wiring on the site.

2. and indicates terminal blocks and the

numbers within them are terminal numbers.

24

7

Wiring Diagrams

Indoor Units

L

N

RED

WHI

GRN/YEL

1

3

YEL

2

5

6

7

8

BLU

ORN

BLK

GRY

WHI

RED

GRY

WHI

RC

RED

YEL

BLU

ORN

BLK

CN03

CN07 CN25

CN51

55

33

11

22

44

66

CN27

CN50

BLK

BLU

ORN

RED WHI

RED

WHI

BLK

CN26

55

33

11

22

44

66

WHI

BLU

55

33

11

22

CN10

WHI

BLU

1

3

5

1

2

1

2

CN01 CN12

YEL

BLK

WHI

33

114422

CN02

B

A

C

B

A

C

B

A

C

ORN

YEL

BLU

CN04

22

11

WHI

CN05

22

11

BLU

CN20

22

11

YEL

22

44

66

11

CN23

RED

GRN

WHI

BLK

1

2

3

1

3

1

2

CN101 CN25 CN08 CN09 CN11

1

2

3

4

5

6

RY06

RY07

WHI

YEL

ORN

BLU

BRN

RED

6

4

3

1

2

5

WHI

YEL

ORN

BLU

BRN

RED

3

1

2

1

2

GRY PUR BLK

RED

RED RED

RED

BLU

BLK BLK

BLK

Q

P

GRY

Q

P

RY01

RY02 RY03 RY04

33

11

FM

1

3

5

7

9

1

3

5

33

11

44

22

1

3

1

2

F

HMLUL

TR

CN28

22

TA

TC2

TC1

PS

MCC-1361-01

PMV

DP GM

FS

BLK

FC

MCC-1355-01

CN16

4-Way Cassette MM-U140, MM-U112, MM-U080, MM-U056

Symbol Name

D Drain Pump

F Fuse (PCB)

FM Fan Motor

FS Float Switch

GM Geared Motor

PMV Pulse Modulating Valve

PS Pressure Sensor

RC Running Capacitor

RY01~RY07

Relay

TA Temperature Sensor

TC1 Temperature Sensor

TC2 Tempterature Sensor

TR Transformer

FC Ferrite Core

Power Supply

220/240

~50Hz

Remote

Controller

(Optional)

Infra-red

Receiver

(IR Model)

Communication

1. The dashed line indicates wiring on the site.

2. and indicates terminal blocks and the

numbers within them are terminal numbers.

25

8

Refrigerant Piping Systematic Drawings

Model: MM-A0280HT, MM-A0224HT

Inverter Unit (10HP, 8HP)

25

Propeller fan

Check joint (Pd)

Check valve

Oil tank

Check valve

Accumulator

Check

joint (Ps)

Capillary

Inverter

Fixed-speed

Compressor

Capillary

Sensor

(TE1)

Sensor

(TS)

Sensor

(TK1)

Sensor

(TD1)

Sensor

(TK2)

Sensor

(TK3)

Sensor

(TD2)

Strainer

Fan Motor

PMV (A)

Liquid

tank

Dryer

(x2)

Oil

separator

Condenser

4-Way valve

Condenser

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

Highpressure sensor

Lowpressure sensor

Highpressure SW

Solenoid valve

(SV3C)

Solenoid valve (SV3B)

Solenoid valve (SV3A)

Compressor case oil removal valve

Solenoid

valve

(SV42)

M

Service valve (gas side)

Packed valve (oil balancing pipe)

Packed valve (liquid side)

HP

26

8

Refrigerant Piping Systematic Drawings

Fixed Speed Unit (10HP, 8HP)

26

Model: MM-A0280HX, MM-A0224HX

Propeller fan

Check joint (Pd)

Check valve

Oil tank

Check valve

Accumulator

Check

joint (Ps)

Capillary

Fixed-speed

Compressor

Capillary

Sensor

(TE1)

Sensor

(TS)

Sensor

(TK1)

Sensor

(TD1)

Sensor

(TK2)

Sensor

(TK3)

Sensor

(TD2)

Strainer

Fan Motor

PMV (A)

Liquid

tank

Dryer

(x2)

Oil

separator

Condenser

4-Way valve

Condenser

Pulse motor valve B

(Cooling bypass) (PMVB)

Solenoid valve

(SV2)

Highpressure sensor

Lowpressure sensor

Highpressure SW

Solenoid valve

(SV3C)

Solenoid valve (SV3B)

Solenoid valve (SV3A)

Compressor case oil removal valve

Solenoid

valve

(SV41)

Solenoid

valve

(SV42)

M

Service valve (gas side)

Packed valve (oil balancing pipe)

Packed valve (liquid side)

HP

27

8

Refrigerant Piping Systematic Drawings

Fixed Speed Unit (6HP)

Model: MM-A0160HX

Propeller fan

Check joint (Pd)

Check valve

Oil tank

Check valve

Accumulator

Check

joint (Ps)

Capillary

Fixed-speed

Compressor

Capillary

Sensor (TE1)

Sensor

(TS)

Sensor

(TK1)

Sensor

(TK2)

Sensor

(TK3)

Sensor

(TD1)

Strainer

Fan Motor

PMV (A)

Liquid

tank

Dryer

(x2)

Oil

separator

Condenser

4-Way valve

Condenser

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

Highpressure sensor

Lowpressure sensor

Highpressure SW

Solenoid valve

(SV3C)

Solenoid valve (SV3B)

Solenoid valve (SV3A)

Compressor case oil removal valve

Solenoid

valve

(SV41)

M

Service valve (gas side)

Packed valve (oil balancing pipe)

Packed valve (liquid side)

HP

28

9

Combined Refrigerant Piping Systematic Drawings

Normal Operation

(Cooling mode)

Propeller fan

Check joint (Pd)

Check

valve

Check

valve

Check valve

Check

valve

Check

valve

Check

valve

Accumulator

Check

joint (Ps)

Capillary

Fixed-speed

Inverter

Compressor

Capillary

Sensor

(TE1)

Sensor (TS)

Sensor

(TK1)

Sensor

(TK2)

Sensor

(TK3)

Sensor

(TD1)

Sensor

(TD1)

Sensor

(TD2)

Strainer

Air heat exchanger at outdoor side

Fan Motor

PMV (A)

PMV

Liquid

tank

Dryer

(x2)

Oil

separator

(Right side)

Air heat exchanger at outdoor side

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

High-

pressure

sensor

Low-

pressure

sensor

High-

pressure

SW

High-

pressure

SW

Solenoid valve

(SV3C)

Solenoid

valve

(SV3B)

Solenoid

valve

(SV3A)

Compressor

case oil

removal valve

Solenoid

valve

(SV42)

(Left side)

M

Service

valve

(gas side)

Oil tank

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

MM-A0280HT

Master unit 1 (Inverter)

MM-A0280HX

Slave unit 2 (Fixed-speed)

MM-A0280HX

Slave unit 3 (Fixed-speed)

MM-A0280HX

Slave unit 4 (Fixed-speed)

(Indoor unit 1)

(Indoor unit 2)

Air heat

exchanger

at indoor

side

Evaporator

TC1

TC2

TC1

TC2

Pressure

sensor

Pressure

sensor

Check

joint

Check

joint

TA

(Ambient

sensor)

TA

(Ambient

sensor)

Strainer

(Indoor unit 3)

TC1

TC2

Pressure

sensor

Check

joint

TA

(Ambient

sensor)

(Solid line) High-pressure gas or compressed liquid refrigerant

(Dotted line) Evaporating gas refrigerant (Low-pressure gas)

Propeller fan

Check joint (Pd)

Check

valve

Check

valve

Check

valve

Check valve

Check

valve

Check

valve

Check

valve

Accumulator

Check

joint (Ps)

Capillary

Fixed-speed

Compressor

Capillary

Sensor

(TE1)

Sensor (TS)

Sensor

(TK1)

Sensor

(TK2)

Sensor

(TK3)

Sensor

(TD2)

Strainer

Fan Motor

PMV (A)

Liquid

tank

Dryer

(x2)

Oil

separator

Condenser

4-Way valve

Condenser

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

High-

pressure

sensor

Low-

pressure

sensor

High-

pressure

SW

High-

pressure

SW

Solenoid valve

(SV3C)

Solenoid

valve

(SV3B)

Solenoid

valve

(SV3A)

Compressor

case oil

removal valve

Solenoid

valve

(SV41)

Solenoid

valve

(SV42)

M

Service

valve

(gas side)

Oil tank

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

HP

Service

valve

(gas side)

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

Service

valve

(gas side)

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

Strainer

29

9

Combined Refrigerant Piping Systematic Drawings

(Master unit back-up operation: Cooling mode)

Emergency Operation when Inverter Unit has Failed

Propeller fan

Check joint (Pd)

4-way valve

Check

valve

Check

valve

Check valve

Check

valve

Check

valve

Check

valve

Accumulator

Check

joint (Ps)

Capillary

Fixed-speed

Inverter

Compressor

Capillary

Sensor

(TE1)

Sensor (TS)

Sensor

(TK1)

Sensor

(TK2)

Sensor

(TD1)

Sensor

(TD1)

Sensor

(TK3)

Sensor

(TD2)

Strainer

Fan Motor

PMV (A)

PMV

Liquid

tank

Dryer

(x2)

Oil

separator

Condenser

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

High-

pressure

sensor

Low-

pressure

sensor

High-

pressure

SW

High-

pressure

SW

Solenoid valve

(SV3C)

Solenoid

valve

(SV3B)

Solenoid

valve

(SV3A)

Compressor

case oil

removal valve

Solenoid

valve

(SV42)

M

Service

valve

(gas side)

Oil tank

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

MM-A0280HT

Master unit 1 (Inverter)

MM-A0280HX

Slave unit 2 (Fixed-speed)

MM-A0280HX

Slave unit 3 (Fixed-speed)

MM-A0280HX

Slave unit 4 (Fixed-speed)

(Indoor unit 1)

(Indoor unit 2)

TC1

TC2

TC1

TC2

Pressure

sensor

Pressure

sensor

Check

joint

Check

joint

TA

(Ambient

sensor)

TA

(Ambient

sensor)

Strainer

(Indoor unit 3)

Evaporator

TC1

TC2

Pressure

sensor

Check

joint

TA

(Ambient

sensor)

(Solid line) High-pressure gas or compressed liquid refrigerant

Service valves closed fully at liquid and gas side.

(Dotted line) Evaporating gas refrigerant (Low-pressure gas)

Propeller fan

Check joint (Pd)

Check

valve

Check

valve

Check

valve

Check valve

Check

valve

Check

valve

Check

valve

Accumulator

Check

joint

(Ps)

Capillary

Fixed-speed

Compressor

Capillary

Sensor

(TE1)

Sensor (TS)

Sensor

(TK1)

Sensor

(TK2)

Sensor

(TK3)

Sensor

(TD2)

Strainer

Fan Motor

PMV (A)

Liquid

tank

Dryer

(x2)

Oil

separator

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

High-

pressure

sensor

Low-

pressure

sensor

High-

pressure

SW

High-

pressure

SW

Solenoid valve

(SV3C)

Solenoid

valve

(SV3B)

Solenoid

valve

(SV3A)

Compressor

case oil

removal valve

Solenoid

valve

(SV41)

Solenoid

valve

(SV42)

Condenser

4-Way valve

Condenser

M

Service

valve

(gas side)

Oil tank

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

HP

Service

valve

(gas side)

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

Service

valve

(gas side)

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

Failure

Temporal setup

master unit

in emergency

30

9

Combined Refrigerant Piping Systematic Drawings

(Cooling mode)

Emergency Operation when Fixed-Speed Unit has Failed

Propeller fan

Check joint (Pd)

4-way valve

Check

valve

Check

valve

Check valve

Check

valve

Check

valve

Check

valve

Accumulator

Check

joint (Ps)

Capillary

Fixed-speed

Inverter

Compressor

Capillary

Sensor

(TE1)

Sensor (TS)

Sensor

(TK1)

Sensor

(TK2)

Sensor

(TD1)

Sensor

(TD1)

Sensor

(TK3)

Sensor

(TD2)

Strainer

Fan Motor

PMV (A)

PMV

Liquid

tank

Dryer

(x2)

Oil

separator

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

High-

pressure

sensor

Low-

pressure

sensor

High-

pressure

SW

High-

pressure

SW

Solenoid valve

(SV3C)

Solenoid

valve

(SV3B)

Solenoid

valve

(SV3A)

Compressor

case oil

removal valve

Solenoid

valve

(SV42)

M

Service

valve

(gas side)

Oil tank

Packed

valve

(liquid

side)

MM-A0280HT

Master unit 1 (Inverter)

MM-A0280HX

Slave unit 2 (Fixed-speed)

MM-A0280HX

Slave unit 3 (Fixed-speed)

MM-A0280HX

Slave unit 4 (Fixed-speed)

(Indoor unit 1)

(Indoor unit 2)

Evaporator

TC1

TC2

TC1

TC2

Pressure

sensor

Pressure

sensor

Check

joint

Check

joint

TA

(Ambient

sensor)

TA

(Ambient

sensor)

Strainer

(Indoor unit 3)

TC1

TC2

Pressure

sensor

Check

joint

TA

(Ambient

sensor)

(Solid line) High-pressure gas or compressed liquid refrigerant

Service valve opened fully at balancing pipe.

Service valves closed fully at

liquid and gas sides.

(Dotted line) Evaporating gas refrigerant (Low-pressure gas)

Propeller fan

Check joint (Pd)

Check

valve

Check

valve

Check

valve

Check valve

Check

valve

Check

valve

Check

valve

Accumulator

Check

joint (Ps)

Capillary

Fixed-speed

Compressor

Capillary

Sensor

(TE1)

Sensor (TS)

Sensor

(TK1)

Sensor

(TK2)

Sensor

(TK3)

Sensor

(TD2)

Strainer

Fan Motor

PMV (A)

Liquid

tank

Dryer

(x2)

Oil

separator

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

High-

pressure

sensor

Low-

pressure

sensor

High-

pressure

SW

High-

pressure

SW

Solenoid valve

(SV3C)

Solenoid

valve

(SV3B)

Solenoid

valve

(SV3A)

Compressor

case oil

removal valve

Solenoid

valve

(SV41)

Solenoid

valve

(SV42)

Condenser

4-Way valve

Condenser

M

Service

valve

(gas side)

Oil tank

HP

Service

valve

(gas side)

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

Service

valve

(gas side)

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

Failure

Packed

valve

(liquid

side)

Packed

valve (oil

balancing

pipe)

Packed

valve (oil

balancing

pipe)

31

9

Combined Refrigerant Piping Systematic Drawings

(Normal outdoor unit refrigerant recovery)

Recovery of Refrigerant in Failed Outdoor Unit

31

Propeller fan

Check joint (Pd)

4-way valve

Check

valve

Check

valve

Check valve

Check

valve

Check

valve

Check

valve

Accumulator

Check

joint

(Ps)

Capillary

Fixed-speed

Inverter

Compressor

Capillary

Sensor

(TE1)

Sensor (TS)

Sensor

(TK1)

Sensor

(TK2)

Sensor

(TD1)

Sensor

(TD1)

Sensor

(TK3)

Sensor

(TD2)

Strainer

Fan Motor

PMV (A)

PMV

Liquid

tank

Dryer

(x2)

Oil

separator

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

High-

pressure

sensor

Low-

pressure

sensor

High-

pressure

SW

High-

pressure

SW

Solenoid valve

(SV3C)

Solenoid

valve

(SV3B)

Solenoid

valve

(SV3A)

Compressor

case oil

removal valve

Solenoid

valve

(SV42)

M

Service

valve

(gas side)

Oil tank

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

MM-A0280HT

Master unit 1 (Inverter)

MM-A0280HX

Slave unit 2 (Fixed-speed)

MM-A0280HX

Slave unit 3 (Fixed-speed)

MM-A0280HX

Slave unit 4 (Fixed-speed)

(Indoor unit 1)

(Indoor unit 2)

TC1

TC2

TC1

TC2

Pressure

sensor

Pressure

sensor

Check

joint

Check

joint

TA

(Ambient

sensor)

TA

(Ambient

sensor)

Strainer

(Indoor unit 3)

Evaporator

TC1

TC2

Pressure

sensor

Check

joint

TA

(Ambient

sensor)

(Solid line) High-pressure gas or compressed liquid refrigerant

Service valve fully opened at balancing pipe.

Service valve fully closed at liquid side.

Service valve fully closed at gas

side

➝ Fully closed approx.

10min after operation start

(Dotted line) Evaporating gas refrigerant (Low-pressure gas)

Propeller fan

Check joint (Pd)

Check

valve

Check

valve

Check

valve

Check valve

Check

valve

Check

valve

Check

valve

Accumulator

Check

joint

(Ps)

Capillary

Fixed-speed

Compressor

Capillary

Sensor

(TE1)

Sensor (TS)

Sensor

(TK1)

Sensor

(TK2)

Sensor

(TK3)

Sensor

(TD2)

Strainer

Fan Motor

PMV (A)

Liquid

tank

Dryer

(x2)

Oil

separator

Pulse motor valve B

(Cooling bypass)

(PMVB)

Solenoid valve

(SV2)

High-

pressure

sensor

Low-

pressure

sensor

High-

pressure

SW

High-

pressure

SW

Solenoid valve

(SV3C)

Solenoid

valve

(SV3B)

Solenoid

valve

(SV3A)

Compressor

case oil

removal valve

Solenoid

valve

(SV41)

Solenoid

valve

(SV42)

Condenser

4-Way valve

Condenser

M

Oil tank

HP

Service

valve

(gas side)

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

Service

valve

(gas side)

Packed

valve (oil

balancing

pipe)

Packed

valve

(liquid

side)

Failure