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A90-0130
Modular Multi System
Service Manual
Air Conditioner Multi Split Type System
HFC R407C
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
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
3
Introduction
Precautions
1
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.
4
Introduction
Components
1. Outdoor Unit
Inverter unit Corresponding HP 8HP Model name Cooling capacity (kW) Heating capacity (kW) 10HP 6HP 8HP 10HP Fixed-speed unit Appearance
1
MM-A0224HT MM-A0280HT MM-A0160HX MM-A0224HX MM-A0280HX 22.4 25.0 28.0 31.5 16.0 18.0 22.4 25.0 28.0 31.5
2. Outdoor Units (Combination of Outdoor Units)
Corresponding HP 8HP 10HP 14HP 16HP 18HP 20HP 22HP 24HP 26HP 28HP 30HP 32HP 34HP 36HP 0440 0504 0560 0608 0672 44.8 50.4 56.0 60.8 8HP 8HP 6HP -- -- 22 11 29.7 67.2 8HP 8HP 8HP -- -- 24 12 32.4 0728 0784 0840 72.8 78.4 84.0 0896 0952 1008 89.6 8HP 8HP 8HP 8HP -- 32 16 43.2 38HP 40HP 42HP 44HP 46HP 1064 1120 1176 1232 1288 Combined Model MM-A~HT 0224 0280 0384 Cooling capacity (kW) Inverter unit 22.4 8HP -- Fixedspeed unit -- -- --
No. of connectable indoor units
28.0 10HP -- -- -- -- 16 5 13.5
38.4 8HP 6HP -- -- -- 16 7 18.9
95.2 100.8 106.4 112.0 117.6 123.2 128.8 10HP 10HP 8HP 8HP 8HP -- 34 17 45.9 10HP 8HP 8HP -- 36 18 48.6 10HP 10HP 10HP 10HP 10HP 10HP 10HP 10HP 10HP 8HP -- 38 19 51.3 10HP -- 40 20 54 8HP 8HP 8HP 8HP 40 21 56.7 10HP 10HP 8HP 10HP 8HP 8HP 40 22 59.4 8HP 8HP 40 23 62.1
8HP 10HP 10HP 8HP -- -- -- 18 8 21.6 8HP -- -- -- 18 9 24.3 10HP -- -- -- 20 10 27
10HP 10HP 10HP 8HP 8HP -- -- 26 13 35.1 10HP 10HP 8HP -- -- 28 14 37.8 10HP -- -- 30 15 40.5
Combined outdoor units
13 4 10.8
Min. HP Connected Max. HP Connected
3. Branching joints/headers
Model name RBM-Y018 Y-shape branching joint RBM-Y037 RBM-Y071 RBM-Y129 4-branching header (*3) 8-branching header (*3) RBM-H4037 RBM-H4071 RBM-H8037 RBM-H8071 Usage Indoor unit capacity code (*1): Total below 6.4 Indoor unit capacity code (*1): Total 6.4 or more and below 13.2 Indoor unit capacity code (*1): Total 13.2 or more and below 25.2 Indoor unit capacity code (*1): Total 25.2 or more Indoor unit capacity code (*1): Total below 13.2 Indoor unit capacity code (*1): Total 13.2 or more and below 25.2 Indoor unit capacity code (*1): Total below 13.2 Indoor unit capacity code (*1): Total 13.2 or more and below 25.2 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 outdoor unit) Connecting pipe RBM-T129 Balancing pipe Piping at liquid side Piping at gas side Corresponding dia. (mm). Ø9.52 Ø12.7 to Ø22.2 Ø22.2 to Ø54.1 Qty 1 1 1 (*2) (*2) (*2) Max. 4 branches Max. 8 branches Appearance
(*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
5
Summary
Operating Conditions
G G
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 Room Temperature Room humidity -5 ~ 43°C -15 ~ 21°C 18 ~ 32°C 15 ~ 29°C <80% Cooling Heating Cooling Heating Cooling
2
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.
Diameter (mm) 1 5/8 Nominal diameter (inch)
6.4
1
9.5
3
12.7
1
15.9
5
19.0
3
22.0
7
28.6 1 /8
1
34.9 1 /8
3
41.3 1 /8
5
54.1 21/8
/4
/8
/2
/8 = = = = = =
/4
/8
Note 8: Within this manual: ODU = Outdoor Unit IDU R/C = Remote Controller D.O.L. INV = HP Inverter ODU FIX DB = Dry Bulb WB Mg-Sw = Magnetic Contactor IOL OCR = Over Current Relay IGBT Note 9: MPaG kgf/cm2G Conversion multiplier 10MPaG = 10.2kgf/cm2G
Indoor Unit Direct On-Line compressor HP Fixed Speed ODU Wet Bulb Inner Overload Relay Inverter Gate Bi-Polar Transistor
6
Summary
Operating Conditions
1. Model name
OUTDOOR MMA0280HT Modular Multi A Outdoor
2
0280 28.0kW (10HP) 0224 22.4kW (8HP) 0160 16.0kW (6HP) C Cooling H Heating T Inverter X Fixed Speed
INDOOR MMTU056 B C (CR) K (KR) N S (SR) SB TU U Built-In Duct Type Ceiling Type (IR Remote) High Wall Type (IR Remote) Carcase Type Low Wall Type (IR Remote) Built-In Slim Duct Type 2 Way Cassette Type 4 Way Cassette Type
Modular Multi
028 042 056 080 112 140
2.8kW (1HP) 4.2kW (1.5HP) 5.6kW (2HP) 8.0kW (3HP) 11.2kW (4HP) 14.0kW (5HP)
2. Range of combined units
No. of combined units Capacity range : 1 to 5 units : 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:
ON OFF
Heat Priority (factory set)
ON OFF
Cool Priority
7
Outline of MMS (Modular Multi System)
Outline of MMS (Modular Multi System)
G G
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.
Branching
· Non-polarized control wiring between outdoor and indoor units
Outdoor unit
3
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.
3
Line Branching
Outdoor Unit Branching joint
G
Largest system capacity
Toshiba's Multi Modular System can be combined up to 128.8kW (46 HP).
Indoor unit
· Wiring diagnosis system
G
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.
Indoor Unit
[Example of wiring diagnosis]
Header Branching
Outdoor Unit Branching Header
8F
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.
G
Self diagnostic system
Comprehensive troubleshooting code enables quick identification of problems arising.
Piping System A Outdoor
unit
Indoor Unit
Wiring System B
Outdoor unit
Indoor unit
G
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.
Line + Header Branching
Header Outdoor Unit
7F
Allowable pipe length : 100m real length (Equivalent to 125m)
G
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.
Branching joint Indoor Unit
Height difference between indoor unit and outdoor unit: 50m Height difference between indoor unit and outdoor unit: 30m
Outdoor unit
Line Branching after Header Branching
Outdoor Unit
1st branching section
MMS Only
Indoor Unit
Header
Branching joint
G
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.
2F
From 1st branching to the farthest indoor unit: 50m
Outdoor Unit
MMS Only
Header
Header
1F
Indoor Unit
8
9
Parts Specifications
Indoor Units
Type Appearance Model name Capacity code Cooling Capacity Heating Capacity (kW) (kW) 2 3 4 5 5.6 8.0 11.2 14.0 6.4 9.6 12.8 15.8
4 Way Cassette Type `U'
MM-U056 MM-U080 MM-U112 MM-U140
4
2 Way Cassette Type `TU'
MM-TU028 MM-TU042 MM-TU056
1 1.5 2
2.8 4.2 5.6
3.2 4.8 6.4
Built-In Slim Duct Type `SB'
MM-SB028
1
2.8
3.2
Built-In Duct, Type `B'
MM-B056 MM-B080 MM-B112 MM-B140
2 3 4 5
5.6 8.0 11.2 14.0
6.4 9.6 12.8 15.8
Ceiling Type `C'
MM-C/CR042 MM-C/CR056 MM-C/CR080 MM-C/CR112 MM-C/CR140
1.5 2 3 4 5
4.2 5.6 8.0 11.2 14.0
4.8 6.4 9.6 12.8 15.8
High Wall Type `K'
MM-K/KR042 MM-K/KR056 MM-K/KR080
1.5 2 3
4.2 5.6 8.0
4.8 6.4 9.6
Carcase Type `N'
MM-N028 MM-N042 MM-N056 MM-N080
1 1.5 2 3
2.8 4.2 5.6 8.0
3.2 4.8 6.4 9.6
Low Wall Type `S'
MM-S/SR056 MM-S/SR080
2 3
5.6 8.0
6.4 9.6
10
Parts Specifications
Outdoor Units
COMPRESSOR
Model Name Motor Type Power Supply Output (k) Pole (P) Coil Resistance (W) Comp. Oil Name Amount of Oil (ml) Inner Over-load Relay
MM-A0280HT MM-A0224HT
MG1450CW-21B
MODEL MM-A0280HX MM-A0224HX MM-A0160HX
YG890C-B1
YG1800CW-B1 YG1700CW-B1 3 Phase induction motor 380 415V, 3 Phase, 50Hz 7.5 7.5 7.5 7.5 2/2 (INV/Fixed) 2/2 (Fixed/Fixed) 1.18/2.25 (INV/Fixed) 2.25/2.25 (Fixed/Fixed) NISSEKI RB68AF VG 74 7500 7500 7500 7500 Opens: 115±5 °C Closes: 93±10°C
4.1 2 2.250 2000
4
4-WAY VALVE
Model Name Coil Specification
MM-A0280HT MM-A0224HT
CHV-0712 AC240V CHV-0712 AC240V
MODEL MM-A0280HX MM-A0224HX MM-A0160HX
CHV-0712 AC240V CHV-0712 AC240V CHV-0401 AC240V
MM-A0280HT, MM-A0224HT, MM-A0280HX, MM-A0224HX, MM-A0160HX
PARTS NAME
Model Name Motor Type Power Supply Output (W) Current (A) Pole (P) Model Name Operating Pressure (kgf/cm2G) Model Name Operating Conditions Model Name Operating Conditions
SPECIFICATION
STF-200-350A 1-Phase induction motor AC 220-240V, 1 Phase, 50Hz 400 4.81~5.89 6 INV=ACB-JB128 FIX=ACB-JA64 Operation: 3.2, Reset 2.55 150NH4-H 0~3.33MPa 150NH4-L 0~0.98MPa AC240V, 74W AC240V, 29W At 50ºC=18.1K, At 100ºC=3.35KW, At 0ºC=34.6K, At 25ºC=10.0K, At 50ºC=3.4K L12A-03, DC12V A12A-15, DC12V VPV-603D, Coil 240V NEV-202D, Coil 240V
Fan Motor
High Pressure Switch High Pressure Sensor Low Pressure Sensor
Compressor Case Heater Accumulator Case Heater Discharge Temperature Sensor Suction Temperature Sensor Pulse Modulating Valve Pulse Modulating Valve (For Cooling Bypass) 2-way Valve 2-way Valve
11
Parts Specifications
Indoor Units
Built-In Duct: MM-B140
No.
1 2 3
PARTS NAME
TYPE
SPECFICATIONS
Fan Motor STF-200-140-4F Output (rated) 140W, 4 pole, 200V, 1 Phase 50Hz Running Capacitor fan motor EAG40M106UF AC 400V 10µF Pulse Motor Valve EDM-B60YPTF-7B-A Capacity: 60
Built-In Duct: MM-B112
No. PARTS NAME TYPE SPECFICATIONS
4
1 2 3
Fan Motor STF-200-120-4B Output (rated) 120W, 4 pole, 200V, 1 Phase 50Hz Running Capacitor fan motor EAG40M505UF AC 400V 5µF Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40
Built-In Duct: MM-B080
No.
1 2 3
PARTS NAME
TYPE
SPECFICATIONS
Fan Motor STF-200-100-4B Output (rated) 100W, 4 pole, 200V, 1 Phase 50Hz Running Capacitor fan motor EAG40M505UF AC 400V 5µF Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40
Built-In Duct: MM-B056
No.
1 2 3
PARTS NAME
TYPE
SPECFICATIONS
Fan Motor STF-230-60-4A Output (rated) 60W, 4 pole, 230V, 1 Phase 50Hz Running Capacitor fan motor EEP2G405HQA114 AC 400V 4µF Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40
Built-In Duct:
No.
4 5 6 7 8 9 10 11
MM-B140, MM-B112, MM-B080, MM-B056
PARTS NAME TYPE
TT-03-1 EDM-MD12TF-3 150/100NH6-D TA Tc1 Tc2 CM00C02 P00RC01
SPECFICATIONS
DC 16.3V 0.5A/AC 11.6V 0.15A DC12V Power Voltage DC 12V Maximum input °C 25 38mA (at 25°C) k 10 Maximum input °C -12 0 34mA (at 25°C) k 62.3 32.8 Maximum input °C 0 25 26mA (at 25°C) k 34.6 10 AC 220-240V AC 220-240V
Transformer Pulse Motor Pressure Sensor Sensor for room temperature Sensor for heat exchanger Sensor for heat exchanger Control PCB Power PCB
50 3.45 25 50 10 3.6 50 3.4
Built-In Slim Duct: MM-SB028
No.
1 2 3 4 5 6 7 8 9 10 11
PARTS NAME
Fan Motor Running Capacitor - fan motor Pulse Motor Valve Transformer Pulse Motor Pressure Sensor Sensor for room temperature Sensor for heat exchanger Sensor for heat exchanger Control PCB Power PCB
TYPE
SMF-230-34-4J EEP2H105HQA105 EDM-B25YPTF-7B-A TT-03-1 EDM-MD12TF-3 150/100NH6-D TA Tc1 Tc2 CM00C02 P00RC01
SPECFICATIONS
Output (rated) 34W, 4 pole, 230V, 1 Phase 50Hz AC 500V 1.0µF Capacity: 25 DC 16.3V 0.5A/AC 11.6V 0.15A DC12V Power Voltage DC 12V Maximum input °C 25 50 38mA (at 25°C) k 10 3.45 Maximum input °C -12 0 25 50 34mA (at 25°C) k 62.3 32.8 10 3.6 Maximum input °C 0 25 50 26mA (at 25°C) k 34.6 10 3.4 AC 220-240V AC 220-240V
12
Parts Specifications
Indoor Units
4-Way Cassette: MM-U140
No.
1 2 3
PARTS NAME
TYPE
SPECFICATIONS
Fan Motor MMF-230-36A Output (rated) 36W, 6 pole, 230V, 1 Phase 50Hz Running Capacitor fan motor EVM45M305UF AC 450V, 3.0µF Pulse Motor Valve EDM-B60YPTF-7B-A Capacity: 60
4-Way Cassette: MM-U112
No.
1 2 3
PARTS NAME
TYPE
SPECFICATIONS
Fan Motor MMF-230-36A Output (rated) 36W, 6 pole, 230V, 1 Phase 50Hz Running Capacitor fan motor EEP2W255HQA113 AC 450V 2.5µF Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40
4
4-Way Cassette: MM-U080
No.
1 2 3
PARTS NAME
TYPE
SPECFICATIONS
Fan Motor MMF-230-28A Output (rated) 28W, 6 pole, 230V, 1 Phase 50Hz Running Capacitor fan motor EEP2W205HQA107 AC 450V 2.0µF Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40
4-Way Cassette: MM-U056
No.
1 2 3
PARTS NAME
TYPE
SPECFICATIONS
Fan Motor MMF-230-28A Output (rated) 28W, 6 pole, 230V, 1 Phase 50Hz Running Capacitor fan motor EEP2H105HQA105 AC 500V 1.0µF Pulse Motor Valve EDM-B40YPTR-7B-A Capacity: 40
4-Way Cassette: MM-U140, MM-U112, MM-U080, MM-U056
No.
4 5 6 7 8 9 10 11
PARTS NAME
Transformer Pulse Motor Pressure Sensor Sensor for room temperature Sensor for heat exchanger Sensor for heat exchanger Control PCB Power PCB
TYPE
TT-03-1 EDM-MD12TF-3 150/100NH6-D TA Tc1 Tc2 CM00C02 P00RC01
SPECFICATIONS
DC 16.3V 0.5A/AC 11.6V 0.15A DC12V Power Voltage DC 12V Maximum input °C 25 38mA (at 25°C) k 10 Maximum input °C -12 0 34mA (at 25°C) k 62.3 32.8 Maximum input °C 0 25 26mA (at 25°C) k 34.6 10 AC 220-240V AC 220-240V
50 3.45 25 50 10 3.6 50 3.4
13
Construction Views
Outdoor Units
MM-A0280HT, MM-A0280HX, MM-A0224HT, MM-A0224HX, MM-A0160HX
Grounding part of bottom plate (including fixed leg)
100 80
4-15 x 20 (Slot)
Base
Fixing bolt pitch
100
5
Fixing bolt pitch
700 990
80
700
Base
Fixing bolt pitch
Base bolt position
750
1700
1560
90
Refrigerant pipe connecting port (Gas side) braze connection (ØA)
245 190 235
88
700
2-60 x 150 Slot (for transport)
500
Refrigerant pipe connecting port (Liquid side) flare connection (ØB) Balance pipe connecting port flare connection (ØC)
(Slot pitch)
Note: All dimensions in (mm)
(knock out) Refrigerant pipe connecting port (Liquid side)
173 60 115
Refrigerant pipe connecting port (Gas side) (knock out)
140
125 64
Model MM-A0280HT, MM-A0280HX MM-A0224HT, MM-A0224HX MM-A0160HX
ØA mm
ØB mm
ØC mm 9.52 9.52 9.52
Balance pipe connecting port
22.2 12.7 22.2 12.7 22.2 9.52
145
130
20 65 35
Details of piping connections
14
170
Fixing bolt pitch
790
610
630
755
755
Construction Views
Indoor Units
Built-In Duct MM-B056, MM-B080, MM-B112, MM-B140
Nx Ø200 Air Outlet Unit Dimension A Hanging Bolt Pitch B J=MxK (H)
Hanging Bolt 4-M10 Provided at site Refrigerant Pipe Connection (Gas ØF)
Unit Dimension:800 Hanging Bolt Pitch:565 6 x Ø4 holes (Ø160)
Fresh air inlet Ø125 cut-out (other side) Refrigerant pipe connection (Liquid ØG) Drain pipe connection (inner diameter 32) (diameter 32 minimal for PVC pipes)
Filter kit
6
Ensure that there is sufficient space around the indoor unit for installation and servicing Indoor unit
300-400 200
Inspection hole
450 450 Provide an inspection hole in this position
Model MM-B056 MM-B080
A
B
E
ØF
ØG 6.4 9.5 9.5
H 252 252 252
J 280 580 930
K 280 290 310
M 1 2 3
N 2 3 4
(Unit: mm)
700 750 780 12.7 1,000 1,050 1,080 15.9
MM-B112, B140 1,350 1,400 1,430 19.0
15
6
480
Electrical box (PCB, Transformer and MF Capacitor)
700 125 450 35 57
Refrigerant pipe connection (Liquid Ø6.4)
158
200
125
Built-In Slim Duct MM-SB028
Air flow
150 200 12 35 150 220
45
81
333
Filter
Air outlet
Refrigerant pipe connection (Gas Ø12.7)
265 276 331 364 391 480
Shelter board
Optional Air Flow (Lower air inlet)
397 480 500
Hanging bolt pitch
Indoor Units
Shelter board
700
Air flow Unit dimension
800
Filter Hanging bolt pitch
750
Construction Views
Air inlet
700
75
75
37.5
150 342.5
150
150
150
220
Unit dimension
Drain pipe connection (1" BSP threaded connection)
16
342.5
Washable filter
Construction Views
Indoor Units
4-Way Cassette MM-U056, MM-U080
185
106 160 259 106
80
170 100
Refrigerant pipe connection (Gas ØA) Refrigerant pipe connection (Liquid ØB)
298
138
138
39 20
Knockout for side ducts Ø150 (both sides)
30 40 405 400 536
Ceiling
Wiring connection Drain pipe connection (Gland plate 3xØ20 holes) (1" BSP threaded connection)
73 140
200
30
195
240
800 Hanging bolt pitch 820 External cassette dimension 880 Ceiling opening 940 Panel dimension
6
940
Fresh air inlet
130 30 536
620 Hanging bolt pitch 820 External cassette dimension 880 Ceiling opening 940 Panel dimension
268
195
Condensate pipe 1" BSP threaded connection
940
Model (MM-) ØA ØB
Fresh air inlet duct size
32
U056 12.7 12.7
U080 15.9 9.5
Ø100
Side outlet duct size 4-Ø6
Ø14 4 Ø130
6-Ø6 Ø150
0 Ø18
80 10
80 10
45° Ø144 Ø30
Ø180
Ø97
45°
30
130
30 2
6
45°
45°
17
Ø200
130
Construction Views
Indoor Units
4-Way Cassette MM-U112, MM-U140
Knockout for side ducts Ø150 (both sides)
106 185 941 106 80 170 100
Refrigerant pipe connection (Gas side Ø19.0) Refrigerant pipe connection (Liquid side Ø9.5)
348 309 210
240
138
138
39
20
610 605
Ceiling panel
Ceiling
Drain pipe connection (1" BSP threaded connection)
40
30
Wiring connection (Gland plate 3xØ20 holes)
6
Fresh air inlet
30 130 940
800 Hanging bolt pitch 820 External cassette dimension 880 Ceiling opening 940 Panel dimension
620 Hanging bolt pitch 820 External cassette dimension 880 Ceiling opening 940 Panel dimension
Condensate pipe 1" BSP threaded connection
940
1350
Fresh air inlet duct size 32 Ø100 4-Ø6
130
Side outlet duct size
80 10
6-Ø6 Ø180 Ø150
0 Ø18
80 10
45° Ø30 Ø144
Ø97
Ø14 4 Ø130
45°
30 6
130
30 2
45°
45°
18
Ø200
73 140
30
30
202
200
Symbol
Posistor
RED
RED
Part Name
CM
RED WHI BLK GRY BLU CN14
GRY
1, 2
Compressor
D RE
FM
FL1 FL2
R
WHI
Fan motor
RED U
52C
CN01 CN02 CN03 CN15 T02
1 1
1, 2
Electromagnetic contactor
S V
BLK
RED
Filter Board MCC - 1366 - 01
CN01 CN17
IPDU Board
MCC - 1342 - 01
for compressor
WHI
CN02 CN18
BLK
49C
1, 2
Inner overload relay
CN03 CN19
GRY RED CN16
RED GRY
3 3 3 3
51C
FL3
(BLK)
Overload relay
CN04 CN20
52C2
CN22 CN23
PMV
CN04
(BLK)
1, 2, 3
Electronic flow control valve
(WHI)
3 3
1 1
3 3
1 (BLU) 1
WHI
RED
GRY
RC
Running capacitor
BLK
63H 1, 2
High pressure switch
TE TS1 TD2
ORG
1 1 1 1
SV
PMV 1 PMV 2
CN501
(BLU) RED
BLK
42, 2 3A, 3B, 3C
Two-way valve
PMV 3
BLK
BLK BLK BLK BLK
TD1
BLU
3 3
TK3
BLK
20SF
BLK
BLK RED BLU ORG YEL WHI RED BLU ORG YEL WHI GRY RED BLU ORG YEL WHI BLK
Four-way valve
BLK
Tr
Electrolytic Capacitor
CN10 T03
D406 RED
BLK
6 6 2 1 2 1 2 1 2 1 6 5 4 3 2 1 6 5 4 3 2 1 3 3 3 3 1 1 1 1 3 3 1 1 2 1 2 1 2 1 2 1 4 3 2 1 4 3 2 1 6 6 6 5 4 3 2 1 6 5 4 3 2 1 4 3 2 1 4 3 2 1
Transformer
CN06
AH
Accumulator heater
TD1, 2 TE TK1, 2, 3 TS
Temperature sensor
(WHI) (WHI) (WHI) (RED) (BLU) (WHI) (GRN) (BLU) (WHI) (WHI) (RED)
Ferrite Core
CN300 CN301 CN501
BLK
1 1
CN302 CN602 CN601
BLK
CN11 CN08 CN09 PO5 PO4
CN600
WHI
CN505 CN504 CN503 CN502
BLU (WHI)
CN507
(RED)
4 4 3 3
BLK
Pressure Sensor PD
CN07
1 2 3 4 5 1 2 3 4 5
WHI
Inverter Unit (10HP 8HP) , MM-A0280HT, MM-A0224HT
CN311
1 1 3 3 1 1
BLU
1 1
(BLK)
BLK BLK
3 3
SV3A
BLU 7 7 CN312
1 2 3 4 1 2 3 4
ON ON
CM1
1 2
SW04
ON
49C1
BLU
1 1
SW06
SW07 SW01
SW08
(Inverter)
SV3B
BLU
3 3
(BLU)
SW05 SW03 SW02
CN313 BLU
1 1
SV3C
BLU
3 3
1 2
ON
(BLK)
Outdoor Units
Wiring Diagrams
BLK
PUR
BRN
GRY
BRN
ORG
BLK
GRY
RED
WHI
GRY
GRY
GRY
GRY
BLK
52C1
RED
GRY
BLK
RED WHI
BLK
WHI
P
Q
P
Q
X
Y
GRY
PNK WHI
51C
4 4
2 1 (WHI) 2 1
RED
FM
U
V
W
63H2
BLK
RED
WHI
BLK
ORG
N
L1 L2
L3
E
CM2 (D.O.L.)
49C2
ORG
19
CN314 ORG
1 1
D716 D717 D714 D715 SW09
AH
ORG
3 3
(RED)
CN316 BLU
3 3
20SF
BLU
1 1
(BLU)
CN317 BLK
3 3 3 3
Interface Control PC Board MCC - 1343 - 03
Parts Layout
(BLU)
RED
1 1 1 1
(WHI) CN515 (WHI) CN308 (BLK) CN307
(BLU) (WHI)
3 3
CN304
BLK
1 1
CN401 CN400 CN402 CN403
5 5 5 5 1 1 3 3 1 1 3 3 3 3 3 3 1 1 5 5 5 5 3 3 3 3 1 1
BLK
TK2
RED WHI BLU BLU
FL1
Posistor
5 5 5 5
3 3 3 3
1 1
5 5 5 5
3 3 3 3
1 1
RC MCC-1342-01
Tr
FL2 FL3 52C2 52C1 51C2
GRY GRY
YEL
RC (RED) 1 2 3 4
P
Q
X
Y
L1 L2 L3
MCC-1366-01
L1
L2
L3
N Power Supply
N
1 2 1 2
(RED)
Isolator
N
T1
T2
T3 E
Electolytic Capacitor
P Q X Y
Power Supply 50Hz 3N~380/415V
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.
MCC-1343-03
ORG
BLU
5 5
(BLK)
ORG
BLU
RED
WHI
SV2
BLK
CN516
TK1
Reactor
PINK RED BLU WHI BLK
Reactor
BLK
7 7
D802 BLU
CN100
WHI
WHI
SV42
BLU
3 3
(WHI)
BLU
63H1
(WHI)
BLU
5 5
(BLU)
D801
CN604
BL U
WHI
WHI
(WHI) WHI
Pressure Sensor PS
WHI
(WHI)
BLU
4 4 3 3 2 2
BLK
BLK
1 2 1 2
(BLU)
RED
(BLK) 1 2
1 2
CN500
YEL
ORG
FL
1, 2, 3
Fuse (20 AMP)
7
7
TE TS
BLK BLK BLK BLK BLK BLK
3 2 1 3 3 1 1
PMV 1 PMV 2
BLK BLK
GRY RED BLU ORG YEL WHI
PMV 3
BLK BLK
TD2
TD1
TK3
RED
BLU ORG YEL WHI RED
CM
2 1 3 1 2 1 2 1 3 3 1 1
1, 2
RED
BLK
1 1
Compressor
(WHI) CN300
(BLU) (BLU) (GRN) (RED) (RED) (WHI) (WHI)
BLU ORG YEL WHI
Symbol
6 6 2 1 2 1 4 4 3 3 2 1 2 1 4 3 2 1 4 3 2 1 6 6 6 5 4 3 2 1 6 5 4 3 2 1 4 3 2 1 4 3 2 1
Part Name
(WHI) CN301 CN601
WHI RED
BLK
FM
(RED) CN302 CN505 CN504 CN503 CN502 CN501 CN507
Fan motor
Pressure Sensor PD
52C
GRY GRY
1, 2
Electromagnetic contactor
for compressor
BLU
1 1 1 2
49C
(BLU)
1, 2
Inner overload relay
51C
P Q
3 3 5 5 7 7
1, 2
D801
Overload relay
CN604
(WHI)
3 3 1 1 3 3 1 1
SV41
BLU BLU (BLU)
D802 BLU BLU BLK BLK (WHI) WHI
CN500
4 4 3 3 2 2
Pressure Sensor PS
PMV
1, 2, 3
Electronic flow control valve
SV42
BLU CN311 BLU
1 1 3 3
63H 1, 2
(BLK)
Q P Q
High pressure switch
CN100
RC
Running capacitor
SV
BLU
5 5 1 2 3 4 1 2 3 4
ON ON
41, 42, 2 3A, 3B, 3C
Two-way valve
(BLK)
1 2
P
SV2
BLU CN516
TK1
20SF
7 7
Four-way valve
SW04
ON
SV3A
BLU CN312
SW06 SW05 SW03 SW02 SW01 SW07 SW08
CH
BLU
1 1
Crank case heater
Tr
Transformer
Fixed Speed Unit (10-HP 8HP) , MM-A0280HX, MM-A0224HX
SV3B
BLU
3 3
(BLU)
Interface Control PC Board MCC - 1343 - 03
1 2
ON
AH
CN313 BLU
1 1 3 3
Accumulator heater
TD1, 2 TE TK1, 2, 3 TS
Temperature sensor
SV3C
BLU CN314
D716 SW09 D717 D714 D715
(BLK)
Ferrite Core
ORG
1 1
Parts Layout
CN315 ORG
1 1 3 3
10,8 HP (Fixed)
AH
ORG CN316 BLU (RED)
CH
ORG
3 3
(WHI)
MCC-1343-03
(WHI) 3
1
3 3
1 (BLU) 1
CN03 RED CN304 CN306
5 5 3 3 1 1 1 1 5 5 5 5 3 3 3 3 1 1 5 5 3 3 3 3 11 11
BLK
Outdoor Units
BLK
RED
WHI
Wiring Diagrams
BRN BLK
BRN
BLK
PUR
BRN
ORG
GRY
GRY
GRY
BLK
52C1
RC
RED WHI BLK RED WHI
GRY ORG
(RED)
1 2 3 4 4 1 1 2 3 4 1 2 3 4
PUR
GRY
RED
BRN
ORG
R S T 52C2 U V W 51C2
WHI BLK
(BLK)
1 2 3 4 1 2 3 4
R S T 52C1 U V W 51C1
P Q
RED
RED
4 4
2 1 2 1
52C2
(WHI)
63H1
YEL
GRY
51C2
BLK
(RED)
FM
63H2
1 2 1 2
51C1
RED
WHI
U
V
W
49C1
ORG
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.
L2 N L3
L1
CM1
RED WHI BLK
(BLK)
1 2 1 2
(D.O.L.)
N L1 L2 L3 E
T1
T2
T3 E
Isolator
CM2 (D.O.L.)
49C2
N
Power Supply 50Hz 3N~380/415V
BLK
YEL
20
Surge Absorber
20SF
BLU
1 1 3 3
RC
(BLU) CN317
3 3 3 3 1 1 1 1
MCC-1357-01
MCC - 1357 - 01
CN01 CN02 (WHI)
(BLU)
1
(BLU)
CN515
(RED) (BLU) (WHI)
3 3
3
BLK
(WHI) CN308
(BLK) CN307
CN305
5 5 3 3 1 1
CN401 CN400
1 1
BL K
CN402 CN403
3 3 1 1 3 3
1 1
BLK
TK2
RED WHI GRY GRY BLU BLU
Tr
GRY
WHI RED
L1 L2 L3
GRY
Tr
N
PMV 1 PMV 3
BLK BLK BLK BLK BLK BLK BLK
3 2 1 3 3 1 1
TE TS
BLK
TD1
TK3
RED
Symbol
6 6 6 3 1 4 3 2 1 2 1 2 1 2 1 2 1 2 1 3 3 1 1 2 1 2 1 4 3 2 1 4 3 2 1 6 5 4 3 2 1 6 5 4 3 2 1
Part Name
RED
BLK
1 1
CM
(WHI) CN300
(BLU) (BLU) (GRN) (RED) (WHI) (WHI)
1
Compressor
(RED) CN302 CN601
WHI RED
BLK
4 4 3 3
BLU ORG YEL WHI
GRY RED BLU ORG YEL WHI
FM
GRY GRY
Fan motor
CN505 CN504 CN502 CN501
CN507
52C
BLU
1 1 1 2
1
(BLU)
4 4 3 3 2 2
Electromagnetic contactor
(WHI)
3 3 5 5 7 7
Pressure Sensor PD
for compressor
49C
P Q
1
Inner overload relay
BLU
D801
SV41
CN604
(WHI)
3 3 1 1 3 3 1 1
CN500
WHI BLU BLU BLK BLK
Pressure Sensor PS
51C
D802
1
Overload relay
CN311 BLU
1 1 3 3
(BLU) CN100
(BLK)
Fixed Speed Unit (6HP) MM-A0160HX
PMV
Q P Q
1, 3
Electronic flow control valve
63H 1
High pressure switch
RC
BLU
5 5 1 2 3 4 1 2 3 4
ON ON
Running capacitor
(BLK)
1 2
P
SV2
BLU CN516
TK1
SV
BLU
7 7
41, 2 3A, 3B, 3C
Two-way valve
SW04
ON
SV3A
CN312
SW06 SW05 SW03 SW02 SW01 SW07 SW08
20SF
BLU
1 1
Four-way valve
CH
Crank case heater
SV3B
BLU
3 3
(BLU)
Tr
CN313 BLU
1 1 3 3 1 2
ON
Transformer
Interface Control PC Board MCC - 1343 - 03
AH
Accumulator heater
TD1 TE TK1, 2, 3 TS
Temperature sensor
CN314
D716 D717 D714 D715
SV3C
BLU ORG
1 1
(BLK)
SW09
Ferrite Core
CH
ORG
3 3
(WHI)
CN315 ORG
1 1 3 3
Parts Layout
AH
ORG CN316 BLU (RED)
Outdoor Units
(WHI) 3
1
3 3
1 (BLU) 1
CN03 RED CN304
5 5 3 3 1 1
BLK
Wiring Diagrams
BLK
RED
WHI
BRN BLK
GRY
BLK
52C1
RC
RED WHI
(RED)
N
1 2 3 4 4 1 1 2 3 4 1 2 3 4
PUR
GRY
RED
WHI
BLK
BLK
4 4
2 1 2 1
(WHI)
63H1
GRY
(RED)
FM
1 2 1 2
51C1
R S T 52C1 U V W 51C1
P Q
RED
BRN
ORG
RED
WHI
49C1
L2 N L3
L1
CM1 (D.O.L.)
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.
T1 L1 L2 L3 E T2 T3 E
N
Isolator
N
Power Supply 50Hz 3N~380/415V
BLK
YEL
21
Surge Absorber
20SF
BLU
1 1 3 3
6 HP (Fixed)
MCC-1343-03
(BLU) CN317
3 3 3 3 1 1 1 1
MCC - 1357 - 01
RC
(WHI)
(BLU)
1
MCC-1357-01
CN01 CN02
(BLU)
CN515
(RED) (BLU) (WHI)
3 3
3
BLK
CN306
5 5 3 3 1 1 1 1
CN305
5 5 3 3 1 1
CN401 CN400
1 1
BL K
CN402 CN403
3 3 1 1 3 3
1 1
BLK
TK2
RED WHI GRY GRY BLU BLU
Tr
GRY
WHI RED
L1 L2 L3
GRY
Tr
7
7
WHI
Increase Fan Speed Option
GRN/YEL
RC
GRY
FM
BLK ORN BLU YEL RED
RC
9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 1
WHI GRY
FM
FC
GRN/YEL
BRN
9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 1
BLK ORN BLU YEL RED
BRN
BRN
BLK ORN YEL RED
RED
YEL
BLU
ORN
BLK
9 8 7 6 5 4 3 2 1 9 8 7 6 5 4 3 2 1
L
CN03
RED
9 9 1 1
CN07 CN51 CN10 CN25 CN26 CN01
YEL BLK
RED WHI BLK WHI
BLK ORN BLU YEL RED
7 7
5 5
3 3
1 1
3 3
5 5
1 1
3 3
5 5
1 2 1 2
1 2 1 2
CN12
Power Supply 220/240 ~50Hz
1 1 3 3
BLU
RY02
CN27 CN28
RED
UL F
5 5
L
1 2 3 4 1 2 3 4
M H
Connector Assembly (Accessory)
RY03 RY04
N
WHI
WHI BLU 1 1 BLU 2 2 3 3
CN04
2 2 1 1 WHI
CN05
TA
TC2
2 2 1 1 BLU
CN20
Built-In Duct MM-B140, MM-B112, MM-B080, MM-B056
RY01
Indoor Units
BLU ORN
Wiring Diagrams
P Q Q
GRY
P
GRY
1. The dashed line indicates wiring on the site. 2. and indicates terminal blocks and the numbers within them are terminal numbers.
WHI YEL ORN BLU BRN RED
Communication
WHI YEL ORN BLU BRN RED
22
1 2 1 2
RED WHI
CN50
Symbol
Name
F
1 23 1 23
CN16
Fuse (PCB)
MCC-1355-01 BLK
1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
1 2 3 4 5 6
WHI BLU BLU BLU BLU BLU
TC1
2 2 1 1 YEL
FM
Fan Motor
PMV
TR
Pulse Modulating Valve
PS
Pressure Sensor
RC
Running Capacitor
CN23
6 6 4 4
RED GRN
RY01~RY04 Relay
TA
Temperature Sensor
A B
3 3
1 2 1 2
A B C
CN02 CN101
PS
WHI 2 2 BLK 1 1
TC1
Temperature Sensor
TC2
Tempterature Sensor
Remote Controller (Optional)
ORN 1 1 YEL 2 2 BLU
C
MCC-1361-01
TR
Transformer
FC
Ferrite Core
1 2 3 4 5 6 1 2 3 4 5 6
CN25
3
1
CN08
3
1
CN09
1 2 1 2
CN11
BLK
6 4 3 1 2 5 6 4 3 1 2 5
PMV
FM
GRN/YEL
BLK ORN BLU RED WHI YEL
Built-In Slim Duct MM-SB028
6 5 4 3 2 1 6 5 4 3 2 1
CN07
RC
RED
WHI
FC
YEL
RED
BLU
ORN
BLK
L
CN03
RED
9 9 1 1
CN07 CN26 CN01 CN51 CN10 CN25 CN12
7 7
5 5
3 3
1 1
3 3
5 5
1 1
3 3
5 5
YEL BLK
GRN/YEL WHI
RED WHI BLK
1 2 1 2
1 2 1 2
Power Supply 220/240 ~50Hz
1 1 3 3
BLU
RY02
CN27 CN28
WHI
UL F
5 5
L
1 2 3 4 1 2 3 4
M H
N
RY03 RY04
WHI
WHI BLU 1 1 BLU 2 2 3 3
CN04
2 2 1 1 WHI
CN05
TA
TC2
2 2 1 1 BLU
CN20
RY01
BLU ORN
Indoor Units
Wiring Diagrams
FC
Ferrite Core
P Q Q
GRY
P
GRY
1. The dashed line indicates wiring on the site. 2. and indicates terminal blocks and the numbers within them are terminal numbers.
WHI YEL ORN BLU BRN RED
Communication
WHI YEL ORN BLU BRN RED
23
1 2 1 2
RED WHI
CN50
Symbol
1 1 3 3
CN16
Name
MCC-1355-01 BLK
1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
1 2 3 4 5 6
WHI BLU BLU BLU BLU BLU
TC1
2 2 1 1 YEL
F
Fuse (PCB)
FM
TR
Fan Motor
PMV
Pulse Modulating Valve
PS
Pressure Sensor
CN23
6 6 4 4
RED GRN
RC
Running Capacitor
RY01~RY04 Relay
A B
3 3
1 2 1 2
A B C
CN02 CN101
PS
WHI 2 2 BLK 1 1
TA
Temperature Sensor
TC1
Temperature Sensor
Remote Controller (Optional)
ORN 1 1 YEL 2 2 BLU
C
MCC-1361-01
TC2
Tempterature Sensor
TR
Transformer
1 2 3 4 5 6 1 2 3 4 5 6
CN25
3
1
CN08
3
1
CN09
1 2 1 2
CN11
BLK
6 4 3 1 2 5 6 4 3 1 2 5
PMV
7
7
GRN/YEL
FM
GRY WHI RED
YEL BLU ORN BLK
RC
GRY WHI
8 7 6 5 8 7 6 5
3 2 1 3 2 1
FC
YEL
RED
BLU
ORN
BLK
L
CN03
RED
9 9 1 1
CN07 CN51 CN10 CN25 CN26 CN01
YEL BLK
GRN/YEL WHI
RED WHI BLK
7 7
5 5
3 3
1 1
3 3
5 5
1 1
3 3
5 5
1 2 1 2
1 2 1 2
CN12
Power Supply 220/240 ~50Hz
1 1 3 3
BLU
RY02
CN27 CN28
RED
UL F
5 5
L
1 2 3 4 1 2 3 4
M H
N
RY03 RY04
WHI
WHI BLU 1 1 BLU 2 2 3 3
CN04
2 2 1 1 WHI
CN05
TA
TC2
2 2 1 1 BLU
CN20
Symbol
Name
RY01
4-Way Cassette MM-U140, MM-U112, MM-U080, MM-U056
D
MCC-1355-01
CN50 CN16
Drain Pump
Indoor Units
GM
TR
Geared Motor
BLU ORN
Wiring Diagrams
TR
Transformer
FC
Ferrite Core
C P Q Q
GRY
Infra-red Receiver (IR Model)
P
GRY
WHI YEL ORN BLU BRN RED
WHI YEL ORN BLU BRN RED
24
1 2 1 2
BLK
RY06
F
1 1
WHI
Fuse (PCB)
3 3
1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6
1 2 3 4 5 6
WHI BLU BLU BLU BLU BLU
TC1
2 2 1 1 YEL
RY07
CN23
FM
RED
Fan Motor
FS
Float Switch
PMV
Pulse Modulating Valve
6 6 4 4
RED GRN WHI 2 2 BLK 1 1
PS
Pressure Sensor
RC
Running Capacitor
A B
3 3
1 2 1 2
A B C
CN02 CN101
PS
MCC-1361-01
CN25 CN08 CN09 CN11
RY01~RY07 Relay
TA
Temperature Sensor
Remote Controller (Optional)
ORN 1 1 YEL 2 2 BLU
C A B
TC1
Temperature Sensor
TC2
Tempterature Sensor
1 2 3 4 5 6 1 2 3 4 5 6
3 3
1 1
3 3
1 1
1 2 1 2
6 4 3 1 2 5 6 4 3 1 2 5
Communication
GRY PUR 3 1 3 1 BLU BLU
BLK RED RED RED 1 2 1 2 1 2 RED 1 2 BLK BLK BLK BLK
PMV
DP
GM
FS
1. The dashed line indicates wiring on the site. 2. and indicates terminal blocks and the numbers within them are terminal numbers.
Refrigerant Piping Systematic Drawings
Inverter Unit (10HP 8HP) ,
Model: MM-A0280HT, MM-A0224HT
Propeller fan
M
Fan Motor
PMV (A)
Sensor (TE1)
Condenser
Condenser Sensor (TS) Solenoid valve (SV2)
4-Way valve Pulse motor valve B (Cooling bypass) (PMVB)
Highpressure sensor Sensor (TK1) Liquid tank Solenoid valve (SV3C) Strainer Check joint (Pd) Oil Strainer separator Capillary Solenoid valve (SV42) HP Highpressure SW Sensor (TD2)
8
Capillary Check valve HighHP pressure SW Compressor Fixed-speed
Accumulator
Strainer
Capillary Strainer Sensor (TK2)
Sensor (TD1)
Check joint (Ps)
Inverter
Dryer (x2)
Oil tank
Check valve
Sensor (TK3)
Capillary Lowpressure sensor Solenoid valve (SV3B)
Check valve Solenoid valve (SV3A) Check valve
Compressor case oil removal valve
Check valve Capillary
Check valve
Strainer
Packed valve (oil balancing pipe)
Packed Service valve valve (liquid (gas side) side)
25
Refrigerant Piping Systematic Drawings
Fixed Speed Unit (10HP 8HP) ,
Model: MM-A0280HX, MM-A0224HX
Propeller fan
M
Fan Motor
PMV (A)
Sensor (TE1)
Condenser
Condenser Capillary 4-Way valve Pulse motor valve B (Cooling bypass) (PMVB) Solenoid valve (SV2) Sensor (TS)
8
Sensor (TK1) Solenoid valve (SV3C) Strainer Check valve Capillary HighHP pressure SW Oil separator
Highpressure sensor Check joint (Pd) Strainer Capillary Check valve Solenoid valve (SV41) Solenoid valve (SV42) HP Highpressure SW Sensor (TD2)
Liquid tank
Accumulator
Capillary Strainer Strainer Sensor (TK2) Check valve
Sensor (TD1)
Compressor Fixed-speed Fixed-speed
Check joint (Ps) Capillary
Dryer (x2)
Oil tank
Sensor (TK3)
Check valve Solenoid valve (SV3A) Check valve
Compressor case oil removal valve
Lowpressure sensor
Check valve Capillary
Check valve
Solenoid valve (SV3B)
Strainer
Packed valve (oil balancing pipe)
Packed Service valve valve (liquid (gas side) side)
26
Refrigerant Piping Systematic Drawings
Fixed Speed Unit (6HP)
Model: MM-A0160HX
Propeller fan
M
Fan Motor
Condenser
PMV (A) Sensor (TE1) Capillary Condenser Sensor (TS) Solenoid valve (SV2)
4-Way valve Pulse motor valve B (Cooling bypass) (PMVB)
Highpressure sensor Sensor (TK1) Liquid tank Capillary Check valve Capillary Strainer Sensor (TK2) Check valve Sensor (TK3) Compressor case oil removal valve Compressor Fixed-speed Solenoid valve (SV3C) Strainer Check joint (Pd) Strainer Oil separator Capillary Solenoid valve (SV41) HP Highpressure SW Sensor (TD1)
8
Accumulator
Strainer
Check joint (Ps)
Capillary Lowpressure sensor Check valve Capillary Solenoid valve (SV3B) Strainer
Dryer (x2)
Oil tank
Check valve Solenoid valve (SV3A) Check valve
Check valve
Packed valve (oil balancing pipe)
Packed Service valve valve (liquid (gas side) side)
27
9
MM-A0280HT Master unit 1 (Inverter) MM-A0280HX Slave unit 2 (Fixed-speed) Propeller fan Propeller fan
(Indoor unit 1) M
(Right side)
Evaporator
Fan Motor
M
Fan Motor
TC1
Check joint
Sensor Air heat exchanger at outdoor side (Left side) (TE1)
Air heat exchanger at indoor side PMV (A)
Sensor (TE1)
Condenser
TC2
(Cooling mode)
PMV
Pressure sensor
Air heat exchanger at outdoor side Condenser
PMV (A)
TA (Ambient sensor) Sensor (TS)
4-Way valve
Strainer Capillary
4-Way valve
Sensor (TS)
Solenoid valve (SV2)
(Indoor unit 2)
Pulse motor valve B (Cooling bypass) (PMVB)
Pulse motor valve B (Cooling bypass) (PMVB) Solenoid valve (SV2)
Evaporator
TC1 Highpressure sensor Solenoid valve Sensor (SV3C) (TK1) Strainer Strainer Capillary Oil separator Liquid tank Capillary
Accumulator Solenoid valve (SV42)
HP Check valve
TC2 Sensor (TK1) Solenoid valve (SV3C) Strainer
Highpressure sensor Check joint (Pd)
Check joint Check joint (Pd)
PMV
Pressure sensor Capillary
TA (Ambient sensor)
Strainer
Liquid tank
Strainer Capillary Oil separator Check Solenoid valve valve (SV41)
(Indoor unit 3) Strainer Sensor (TK2) Inverter
Check Sensor valve Oil tank
Strainer
Evaporator
Compressor
Highpressure SW Sensor (TD2) Capillary Lowpressure sensor
Check valve
Strainer
Normal Operation
PMV Check valve Capillary Strainer
(TK3)
Pressure sensor Compressor case oil removal valve Check valve Solenoid valve (SV3A) Check valve
Solenoid valve (SV3B)
Oil tank
(TK3)
Fixed-speed
Check joint
Fixed-speed
Fixed-speed
Combined Refrigerant Piping Systematic Drawings
28
Capillary Sensor (TD1) Capillary Check joint (Ps) Strainer Sensor (TK2) Dryer (x2) Check valve HighHP pressure SW Sensor (TD1) Check valve Solenoid valve (SV3A) Check valve
Service valve (gas side) Packed valve (oil balancing pipe) Packed valve (liquid side)
Solenoid valve (SV42) HighHP pressure SW HP
Accumulator
Compressor
Highpressure SW Sensor (TD2)
Check joint (Ps) Capillary
Check Sensor valve
TC1
TC2
Dryer (x2)
Lowpressure sensor Compressor Check case oil removal valve valve Capillary
Check valve
Solenoid valve (SV3B)
TA (Ambient sensor)
Strainer
Strainer
Packed valve (oil balancing pipe)
Packed valve (liquid side)
Service Slave unit 3 (Fixed-speed) valve (gas side) Packed Packed Service MM-A0280HX valve (oil valve valve balancing (liquid (gas side) Slave unit 4 (Fixed-speed) side) pipe) Packed valve (oil balancing pipe) Packed valve Service (liquid valve side) (gas side)
MM-A0280HX
(Solid line) High-pressure gas or compressed liquid refrigerant
(Dotted line) Evaporating gas refrigerant (Low-pressure gas)
MM-A0280HT Master unit 1 (Inverter) MM-A0280HX Slave unit 2 (Fixed-speed) Propeller fan Propeller fan
(Indoor unit 1)
Evaporator
Failure
M Fan Motor M Fan Motor
Temporal setup master unit in emergency
TC1
TC2
Check joint
Sensor (TE1)
Condenser
PMV PMV (A)
Sensor (TE1)
PMV (A)
Condenser
Pressure sensor
Condenser Condenser
TA (Ambient sensor) 4-way valve
4-Way valve
Strainer Sensor (TS) Capillary
Sensor (TS)
Solenoid valve (SV2)
Pulse motor valve B (Cooling bypass) (PMVB)
Solenoid valve (SV2)
(Indoor unit 2)
Pulse motor valve B (Cooling bypass) (PMVB)
Evaporator
TC1 Sensor (TK1)
Check valve
TC2
Highpressure sensor Check joint (Pd)
Oil separator
Check joint Solenoid valve Sensor (SV3C) (TK1) Strainer Capillary Liquid tank Capillary
Accumulator
PMV
Solenoid valve (SV3C) Strainer
Highpressure sensor Check joint (Pd)
Pressure sensor Capillary
Solenoid valve (SV42)
HP
TA (Ambient sensor)
Strainer
(Indoor unit 3) Strainer Sensor (TD2) Capillary Solenoid valve (SV3B) Sensor (TK2) Inverter Fixed-speed
Check Sensor valve Oil tank
(Master unit back-up operation: Cooling mode)
Evaporator
Compressor
Highpressure SW Check joint (Ps)
Strainer
Fixed-speed
Check joint (TK3) Check valve Capillary
Check valve
PMV
Dryer (x2) Lowpressure sensor
Oil tank
(TK3)
Fixed-speed
Emergency Operation when Inverter Unit has Failed
Combined Refrigerant Piping Systematic Drawings
29
Capillary Sensor (TD1) Check valve HighHP pressure SW Capillary Strainer Sensor (TK2) Dryer (x2) Sensor (TD1) Check valve Solenoid valve (SV3A) Compressor case oil removal valve Strainer Check valve Check valve Solenoid valve (SV3A) Check valve
Service valve (gas side)
Strainer
Liquid tank
Strainer Capillary Oil separator Check Solenoid valve valve (SV41)
Solenoid valve (SV42) HighHP pressure SW
Accumulator
Compressor
HP Highpressure SW Sensor (TD2)
Check joint (Ps)
TC1
TC2
Check Sensor valve
Pressure sensor
Lowpressure sensor Compressor case oil removal valve Check valve Capillary
Capillary Solenoid valve (SV3B)
Check valve
TA (Ambient sensor)
Strainer
Strainer
Packed valve (oil balancing pipe)
Packed valve (liquid side)
Service valves closed fully at liquid and gas side.
Packed valve (oil balancing pipe)
Packed valve (liquid side)
Service Slave unit 3 (Fixed-speed) valve (gas side) Packed Packed MM-A0280HX valve (oil valve Service balancing (liquid valve Slave unit 4 (Fixed-speed) side) (gas side) pipe) Packed valve (oil balancing pipe) Packed valve Service (liquid valve side) (gas side)
MM-A0280HX
(Solid line) High-pressure gas or compressed liquid refrigerant
(Dotted line) Evaporating gas refrigerant (Low-pressure gas)
9
9
MM-A0280HT Master unit 1 (Inverter) MM-A0280HX Slave unit 2 (Fixed-speed) Propeller fan Propeller fan
(Indoor unit 1) M Fan Motor M Fan Motor
Failure
Evaporator
TC1
TC2
Check joint
Condenser
PMV
Sensor (TE1)
PMV (A)
PMV (A)
Pressure sensor
Condenser Condenser
Sensor (TE1)
Condenser
(Cooling mode)
TA (Ambient sensor) 4-way valve
4-Way valve
Strainer Sensor (TS) Capillary
Sensor (TS)
Solenoid valve (SV2)
(Indoor unit 2)
Pulse motor valve B (Cooling bypass) (PMVB)
Pulse motor valve B (Cooling bypass) (PMVB) Solenoid valve (SV2)
Evaporator
TC1 Sensor (TK1)
Check valve
TC2 Solenoid valve (SV3C) Strainer
Check joint Solenoid valve Sensor (SV3C) (TK1) Strainer Strainer Capillary Oil separator Liquid tank Capillary
Accumulator
Highpressure sensor Check joint (Pd)
Highpressure sensor Check joint (Pd)
PMV
Pressure sensor Capillary
TA (Ambient sensor)
Solenoid valve (SV42)
HP
Strainer
Liquid tank
Strainer Capillary Oil separator Check Solenoid valve valve (SV41)
Solenoid valve (SV42)
Strainer
(Indoor unit 3) Strainer Sensor (TD2) Capillary Dryer (x2) Solenoid valve (SV3B) Sensor (TK2) Inverter
Check valve Oil tank
Compressor
Highpressure SW Check joint (Ps) Strainer Sensor (TK2)
Strainer
Fixed-speed
Check joint Sensor (TK3) Lowpressure sensor
Check valve
PMV Check valve Capillary Strainer
Dryer (x2)
Fixed-speed
Check Sensor valve (TK3) Oil tank
Fixed-speed
Emergency Operation when Fixed-Speed Unit has Failed
Combined Refrigerant Piping Systematic Drawings
30
Capillary Sensor (TD1) Capillary Compressor case oil removal valve Check valve Solenoid valve (SV3A) Check valve Check valve Solenoid valve (SV3A) Check valve
Service valve (gas side)
Accumulator
HighHP pressure SW HP
Check valve HighHP pressure SW
Sensor (TD1)
Compressor
Evaporator
Highpressure SW Sensor (TD2)
Check joint (Ps) Capillary Lowpressure sensor Compressor case oil removal valve Check valve
Check valve
TC1
TC2
Pressure sensor
Solenoid valve (SV3B)
TA (Ambient sensor)
Strainer
Capillary
Strainer
Packed valve (oil balancing pipe)
Packed valve (liquid side)
Service valve opened fully at balancing pipe.
Packed valve (oil balancing pipe)
Packed valve (liquid side)
MM-A0280HX Service liquid and gas sides. Slave unit 3 (Fixed-speed) valve (gas side) Packed Packed MM-A0280HX valve (oil valve Service balancing (liquid valve Slave unit 4 (Fixed-speed) side) (gas side) pipe) Packed Packed valve (oil valve Service balancing (liquid valve side) (gas side) pipe)
Service valves closed fully at
(Solid line) High-pressure gas or compressed liquid refrigerant
(Dotted line) Evaporating gas refrigerant (Low-pressure gas)
MM-A0280HT Master unit 1 (Inverter) MM-A0280HX Slave unit 2 (Fixed-speed) Propeller fan Propeller fan
(Indoor unit 1) M M Fan Motor Fan Motor
Failure
Evaporator
TC1
TC2
Check joint
Sensor (TE1)
PMV
Condenser Condenser
Pressure sensor
Condenser Condenser
PMV (A) PMV (A)
Sensor (TE1)
TA (Ambient sensor) Capillary Sensor (TS) 4-way valve Pulse motor valve B (Cooling bypass) (PMVB) Solenoid valve (SV2) Pulse motor valve B (Cooling bypass) (PMVB)
4-Way valve
Strainer
Sensor (TS)
Solenoid valve (SV2)
(Indoor unit 2)
Evaporator
TC1 Sensor (TK1)
Check valve
TC2 Solenoid valve (SV3C) Strainer
Check joint Solenoid valve Sensor (SV3C) (TK1) Strainer Check joint (Pd)
Oil Strainer Capillary separator
Highpressure sensor
Highpressure sensor Check joint (Pd)
PMV
Pressure sensor Liquid tank Capillary
Accumulator
TA (Ambient sensor) Capillary
Solenoid valve (SV42)
HP
(Normal outdoor unit refrigerant recovery)
Strainer
Evaporator
Strainer Sensor (TD2) Capillary Solenoid valve (SV3B) Sensor (TK2) Inverter Fixed-speed
Check valve Oil tank
Compressor
Strainer
Fixed-speed
Check joint Sensor (TK3) Check valve Capillary
Check valve
PMV
Dryer (x2) Lowpressure sensor
(TK3)
Oil tank
Fixed-speed
Recovery of Refrigerant in Failed Outdoor Unit
Combined Refrigerant Piping Systematic Drawings
31
Capillary Highpressure SW Check joint (Ps) Sensor (TD1) Check valve HighHP pressure SW Capillary Strainer Sensor (TK2) Dryer (x2) Compressor case oil removal valve Check valve Solenoid valve (SV3A) Check valve Strainer Check valve Solenoid valve (SV3A) Check valve Service valve fully opened at balancing pipe. Service valve fully closed at liquid side.
Service valve (gas side) Packed valve (oil balancing pipe)
Strainer
Liquid tank
Strainer Capillary Oil separator Check Solenoid valve valve (SV41)
Solenoid valve (SV42) HighHP pressure SW HP
Accumulator
(Indoor unit 3)
Sensor (TD1)
Compressor
Highpressure SW Sensor (TD2)
Check joint (Ps)
TC1
TC2
Check Sensor valve
Pressure sensor
Lowpressure sensor Compressor case oil removal valve Check valve Capillary
Capillary Solenoid valve (SV3B)
Check valve
TA (Ambient sensor)
Strainer
Strainer
Packed valve (oil balancing pipe)
Packed valve (liquid side)
MM-A0280HX Slave unit 3 (Fixed-speed)
Packed valve Service (liquid valve side) (gas side)
Service valve fully closed at gas side Fully closed approx. 10min after operation start MM-A0280HX Slave unit 4 (Fixed-speed)
Packed valve (oil balancing pipe) Packed valve Service (liquid valve side) (gas side)
(Solid line) High-pressure gas or compressed liquid refrigerant
(Dotted line) Evaporating gas refrigerant (Low-pressure gas)
9
Refrigeration Cycle Schematic
Indoor Units
Distributor strainer PMV (D) TC2 Liquid sensor Strainer Capillary tube (B) Heat exchanger TC1 Gas sensor Check joint
Pressure sensor Strainer
Refrigerant Pipe (liquid) (A)
Refrigerant Pipe (Gas) (C)
Model
MM-B056 MM-B080 MM-B112 MM-B140 MM-SB028 MM-U056 MM-U080 MM-U112 MM-U140
Ø(A) mm
6.4 9.5 9.5 9.5 6.4 6.4 9.5 9.5 9.5 (3/8") (3/8") (3/8") (3/8") (3/8") (3/8") (3/8") (3/8") (3/8")
Capillary Ø(B) mm
Ø1.7x150Lx3 Ø2.6x200Lx4, Ø2.6x400Lx2 Ø2.2x200Lx6 Ø2.2x200Lx6 Ø1.7x250Lx2 Ø2.0x200Lx3 2.6x(150Lx2), (200Lx3), (400Lx1) 2.6x(200Lx6), (300Lx2), (500Lx2) 2.6x(200Lx6), (300Lx2),(500Lx2)
Ø(C) mm
12.7 15.9 19.0 19.0 12.7 12.7 15.9 19.0 19.0 (1/2") (5/8") (3/4") (3/4") (1/2") (1/2") (5/8") (3/4") (3/4")
PMV (D) Code
40 40 40 60 25 40 40 40 60
10
32
Outline of Control
Outdoor Unit
Operation start/Operation end
The compressor, solenoid valve, pulse motor valve (PMV), outdoor fan, etc. are controlled by a command from the indoor controller. The slave outdoor unit starts/stops by a command from the master outdoor unit.
Operation start Operation stop
Operation signal from indoor Inverter drive Outdoor fan output Fixed-speed Mg-SW output Each solenoid valve output 4-way valve output (OFF in cooling time) PMV output
OFF OFF OFF OFF OFF Full close ON ON ON or OFF
(By command from indoor)
ON or OFF
2 minutes 30 seconds
ON Specified opening Full close
Thermostat ON/Thermostat OFF
Thermostat ON Thermostat OFF
Operation signal from indoor Inverter drive Outdoor fan output Fixed-speed Mg-SW output Each solenoid valve output 4-way valve output (OFF in cooling time) PMV output
OFF OFF OFF OFF ON Full close Specified opening Full close ON ON ON or OFF
(By command from indoor)
11
ON or OFF
2 minutes 30 seconds
33
Outline of Control
Outdoor Unit
Item
1a. Electronic expansion valve (PMV) control
Operation explanation and applied data, etc.
(1) PMV A control (PMV x 2) 1) The PMV (pulse motor valve) is controlled between 100 ~ 1000 pulses during the operation. 2) The PMV is fully open during the cooling operation (PMV A1 = 500 pulses, PMV A2 = 500 pulses). 3) During the heating operation, the opening rate is determined by the temperature which the TS/TD sensor detects and the pressure rate which PS detects (Super heat control). 4) The PMV is fully open when the thermostat is off, when the operation is switched off or when the operation is ceased under abnormal circumstances.
1000 PMV A2 PMV opening rate 550 500 100 50 Min. PMV A1 Max.
Remarks
Mid.
1b. Pulse motor valve (PMV) control
11
2a. Outdoor fan control
(1) PMV B control The purpose of PMV B control is to control the liquid refrigerant bypass by limiting discharge temperature or compressor internal temperature increase. 1) Opening is controlled with pulses from 0 ~ 500. 2) PMV opening is controlled with temp. detected by TS/TD sensors. 3) PMV openings are fully closed during thermostatOFF, operation stop, and emergency stop. (1) Cooling fan control 1) In a specified time when cooling operation is activated, the master outdoor unit controls the outdoor fan speed (no. of fan driving waves) by Pd pressure. The slave outdoor unit controls the outdoor fan speed with temperature detected by TE sensor.
Pd pressure (kgf/cm2G) 22 21 19 18 17 16 15 14 13 12 11
[-1 wave/20 sec ] In up time:From 0 wave to 1 wave In down time: From 15 waves to 1 wave Interval control [+1 wave/20 sec ] From 2 waves to Max. no. of waves
[ 16Max. ] waves
[Hold ] [+1 wave/20 sec ] From 1 wave to (Up to 5 waves) Max. no. of waves
[[0 wave ]: [1 wave ]:
180 sec 30 sec
]
*
PD pressure is maintained between 14.5 ~ 18 kgf/cm2G by the cooling fan control. The no. of waves can be controlled between 0 wave (STOP) to 16 waves (all waves).
34
Outline of Control
Outdoor Unit
Item
2b. Outdoor fan control
Operation explanation and applied data, etc.
(1) Heating fan control 1) The number of waves is controlled according to the TE sensor temperature. 2) If TE >20°C is constantly detected for 5 minutes, the operation will automatically shut down. This is the same condition as when the thermostat automatically becomes switched off, thus the operation will automatically start again. 3) When the above condition (2) persists and the high pressure SW operates, check the suction area of the indoor unit for blockages. Ensure that the filter is clean and start the operation. 4) After the fan is switched on, this control does not operate during defrost mode. TE temperature (°C) A zone: minimum, compulsory stop timer count 20 B zone: 2/20 seconds (down to the minimum) 6 C zone: 1/20 seconds (down to the minimum) 4 D zone: hold (maintain the current rate) 2 E zone: +1/20 seconds (up to the maximum) 1 F zone: Maximum revolutions number (16) Fixed speed/slave units not operating will maintain the ODU fan at 1 wave to prevent refrigerant from remaining in the ODU Heat Exchanger.
Remarks
11
3. Capacity calculation
By the capacity request command from the indoor controller, the inverter operation command of the master outdoor unit, ON/OFF control of the fixedspeed compressor and the slave outdoor unit are determined. The master outdoor unit sets up activation priority order of the slave outdoor units connected to the system, and starts the operation.
(HP) 30 Requested HP 25 20 15 10 5 1 5 10 15 20 25 30 (HP) Operation capacity Inverter Fixed
11
4. Oil level valve detection control
1) The volume of oil in the oil tank is judged by the detection temperature of TK1 and TK2 sensors. 2) The present temperature detected by TK1,TK2 and TK3 sensors are stored in memory as the initial value, and then the solenoid valve SV3C is activated. Sampling of TK1,TK2 and TK3 sensor temperature occurs and the temperature change between TK1 and TK2 is judged. If the judgement is such that a reduction in oil is present the oil equalizing control function starts.
35
Outline of Control
Outdoor Unit
Item
5. Oil equalizing control
Operation explanation and applied data, etc.
This control is to prevent oil reduction in the compressor between the outdoor units. This control is classified into two functions, one is an individual control in normal operation which is performed by the master outdoor unit, and the other is a system control which is executed when shortage has been detected in the oil level detection control. This control is executed by open/close operation of solenoid valves SV3A, SV3B, and SV3C, and has the following two patterns. (1) Oil equalizing control 1 This is executed when the master outdoor unit has continuously operated for 30 minutes or more, and the result of the oil level detection judgment has been adequate. If only one outdoor unit is present this control is not implemented. (2) Oil equalizing control 2 This is executed to supply oil collected in the oil tank of each outdoor unit to the outdoor unit of which the oil level has been reduced. When the oil level judgment result of the master outdoor unit has been insufficient while the compressor of master outdoor unit was ON, or when one of the slave outdoor units required oil equalizing, this control is implemented. When only one outdoor unit is present this control is not implemented.
Remarks
· Controls to divert oil to the inverter unit in operation.
· Normal oil equalizing operation.
6. Refrigerant/Oil recovery control
11
(1) Oil recovery control in cooling mode, Refrigerant recovery control in heating mode During cooling/heating operation, this is executed to recover the oil/refrigerant in gas crossover pipes or indoor units to the outdoor unit when, the compressor operation is reduced, this also prevents stagnation of refrigerant in the outdoor heat exchanger while low ambient cooling operation is performed. This control is managed by the master outdoor unit. 1) Control conditions · When compressor-ON status continued for 60 minutes. · When the cooling thermostat-OFF timer has finished. 2) Contents of control 60 minutes after cooling/heating operation has been activated, the cooling/heating indoor oil/refrigerant recovery signal is sent to the indoor controller. The cooling thermostat-ON 60 minutes timer starts counting again. At the same time, the indoor PMV minimum opening signal is also sent to the indoor controller.
· Recovery time: Approx. 2 min to 6 min though it differs according to the system capacity.
36
Outline of Control
Outdoor Unit
Item
7. Release valve control
Operation explanation and applied data, etc.
(1) SV2 gas balance control This control is executed to balance the gas by opening SV2 while the compressor is off, in order to decrease the activation load in the next compressorON time. This control is individually executed by the master outdoor unit and each slave outdoor unit. 1) Control conditions When the compressor is switched from ON to OFF operation. 2) Contents of control · The control point is exchanged by LP (Pd pressure - Ps pressure) immediately before the compressor stops. · When LP P1, SV2 is opened. After SV2 has been opened, SV2 is turned off when LP
Cooling Pd pressure control point P1, P2 In case of master In case of slave Master outdoor compressor OFF P1 13 13 P2 11 11 Master outdoor compressor ON P1 -- 5 P2 -- 4 kgf/cm2G
Remarks
(2) SV2 low pressure release control This control is to prevent pressure drop during transient operation. This control is individually executed by the master outdoor unit and each slave outdoor unit. This control is executed as necessary except during stop time and thermostat-OFF time. 1) Contents of control · SV2 is opened when Ps pressure>0.8 kgf/cm2G · SV2 is closed when Ps pressure>1.2 kgf/cm2G (3) SV2 compressor case bypass control This control is to prevent oil dilution. This control is individually executed by the master outdoor unit and each slave outdoor unit. This control is executed during compressor-ON (except during oil level detection control). 1) Contents of control SV2 is opened when the following conditions are satisfied. · Compressor status changes from OFF to ON. · Oil recovery control is performed in cooling mode. · SV2 is opened when TK3 sensor detects 2°C or lower, and closed when TK3 sensor detects 5°C or higher temperature during compressorON time. · No. of outdoor fan waves is 3 waves or less during cooling compressor-ON. 8. Fixed-speed compressor high pressure release control This control is to stop the fixed-speed compressor of each outdoor unit according to Pd pressure value. This control is individually executed by the master outdoor unit and each slave outdoor unit. 1) Contents of control · The fixed-speed compressor stops when Pd pressure is over P1 (Table 7a). · Sets the fixed-speed compressor reactivation time for 10 minutes, and the control finishes.
11
· No. 2 compressor stops with Pd , P1 = 26.5 kgf/cm2G · No. 1 compressor stops with Pd , P1 = 27.5 kgf/cm2G
37
Outline of Control
Outdoor Units
Item
9. Compressor winding heating control
Operation explanation and applied data, etc.
This control is to prevent stagnation of refrigerant in the compressor case by a supply of current to heat the windings while the inverter compressor is off. This control is executed by the inverter outdoor unit only. If the supply of current is not turned on for a specified time before trial operation, when installation work has finished, a fault of the compressor may occur. If the power source is interrupted for a period of time it is necessary to switch power to the system for a minimum of 24 hours before commencing system operation (1) Control conditions Compressor stops and TD < 35°C. (2) Contents of control This control is executed by temperature detected by TK3 sensor as shown in the following figure. NOTE: Switching may be heard during heat winding operation, but it is not an error/fault.
TK3 40°C 34°C 25°C C zone B zone A zone
A zone Continuous switch-on power B zone Intermittent switch-on power ON: 10 minutes OFF: 5 minutes C zone No switch-on power
Remarks
11
10. Crank case heater control
This control is executed by the fixed-speed unit only. (1) Control contents · This control is switched off when TK3 sensor detected 40°C or higher temperature, and switched on when TK3 sensor detected 35°C or lower temperature. · After the compressor status changed from OFF to ON, ON status continues for 10 minutes.
38
Outline of Control
Outdoor Units
Item
11. IPDU (Inverter) control
Operation explanation and applied data, etc.
IPDU controls the inverter compressor by command frequency, frequency up/down speed, and current release control value from the interface P board. .C. The main controls of IPDU control P board are .C. described below. (1) Current release control The output frequency is controlled by AC input current value which is detected by T02 on the control P board, to prevent the inverter input .C. current dropping lower than the specified value.
Remarks
Current value (22A) I1
B zone D zone C zone
(21.5A) I2 A zone
A zone D zone B zone C zone
: : : :
The normal operation is executed. The present operation frequency is kept. The operation frequency is decreased. Decrease of the operation frequency stopped, and the present operation frequency is kept.
(2) Heat sink temp. detection control 1) The heat sink temp. is detected by the thermistor in the compressor driving module Q200, and the inverter compressor driver stops when 120°C is detected. 2) When the inverter compressor driver stops, 1 is counted to the error count. If the error count reaches 3 the system generates a fault code and system operation stops. NOTE: When the error has been determined, the ambient outdoor temp. or an outdoor fan error is considered. (3) Over-current protective control 1) The compressor stops when T03 on IPDU control P board detects over-current. .C. 2) When the compressor stops, 1 is counted to the error count, and the compressor reactivates after 2 minutes 30 seconds. After reactivation, the error count is cleared if the operation continues for 10 minutes or more. (4) High pressure SW control 1) The compressor driver stops when the inverter compressor high pressure SW operates. 2) When the compressor driver stops, 1 is counted to the error count, and the compressor driver reactivates after 2 minutes 30 seconds. After reactivation, the error count is cleared if the operation continues for 10 minutes or more.
11
39
Outline of Control
Outdoor Units
Item
12. Defrost control (reverse defrost method)
Operation explanation and applied data, etc.
(1) Conditions for starting the defrost operation 1) Calculate the operation time w