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TECHNICAL DATA
MINI MULTISET V.R.F. DC INVERTER R410A
OUTDOOR UNITS
April 2008
MINI-MULTISET VRF DCI SYSTEMS
AS
Line-up
R410A Models
Indoor Units
Indoor
Unit
Indoor
UnitType
T ype
22
28
36
56
45
64
AS1S**
1-Way
Air Discharge
Discharge
1-W
ay Air
Semi-Concealed
Semi-Concealed
ASBS**
1-Way
Discharge
1-W
ay Air Discharge
S emi-C oncealed Slim
S emi-C oncealed S lim
AS2S**
2-W
2-W ay
ayAir
Air Discharge
Discharge
2-Way
Discharge
Semi-Concealed
Semi-Concealed
Semi-Concealed
AS2S22MH
ASS
4-W
4-W ay
ayAir
Air
AirDischarge
Discharge
Discharge
4-Way
Semi-Concealed
Semi-Concealed*
Semi-Concealed*
ASS22MH*
AWS/AWF
W
WaWall-mounted
all-Mounted
ll-Mounted
ACS
Ceiling-mounted
Ceiling-Mounted
ADS
Concealed-Duct
Concealed-Duct
Concealed-Duct
ADPS**
Concealed-Duct
Concealed-Duct
Concealed-Duct
High-Static Pressure
High
HighStatic
StaticPressure*
Pressure*
AFS**
Floor-standing
Floor-Standing
Floor-Standing
AFS22MH
AFS28MH
AFS36MH
AFNS**
Concealed-Floor
Concealed-FloorConcealed-FloorStanding
AFNS22MH
AFNS28MH
A FNS36MH
FC
Floor-Ceiling
FC22MHG*
FC28MHG*
FC36MHG*
FC45MHG*
FC56MHG*
FC64MHG*
SD
Slim Ducted
SD22MHG*
SD28MHG*
SD36MHG*
SD45MHG*
SD56MHG*
SD64MHG*
AS1S22MH
AS1S28MH
ASBS28MH
AWS22MH
AWF22MH
ADS22MH*
AS2S28MH
106
1 40
ASS106MH*
ASS140MH*
73
AS1S36MH
ASBS36MH
ASBS56MH
ASBS73MH
AS2S36MH
AS2S56MH
AS2S73MH
ASS56MH*
ASS73MH*
ASS28MH*
ASS36MH*
AWS28MH
AWF28MH
AWS36MH
AWF36MH
A WS56MH
AWS73MH
ACS36MH**
ACS56MH**
ACS73MH
ACS106MH
ACS140MH
ADS73MH
ADS106MH
ADS140MH
ADPS73MH
ADPS106MH
ADPS140MH
ADS28MH*
ADS36MH*
ASS45MH*G
AD45MHG*
ADS56MH*
AD64MHG*
AFS56MH
AFS73MH
AFNS56MH
AFNS73MH
AWS/AWF
ACS
* For these Indoor Unit Types, please see the installation instructions inside the manual included in their package
**Indoor Unit Types not available
ADPS
ADPS
Outdoor Units
AES
Dc Inverter heat pump units
AES04MMIH, AES05MMIH, AES06MMIH
Refrigerant R410A is used in the outdoor units
AFS
Optional controllers
REM
Wired
Remote
Controller
Remote
Controller
REM HW
Wireless Remote
Wireless
RemoteController
Controller(for
(ForASS
ASStype)
type)
REM HLASS
& ASSASBS
types)
Wireless Remote
Remote Controller
Controller(for
(ForFCAS2S,
type)
REM HLFC ASS
Wireless
ACS
type)
WirelessRemote
RemoteController
Controller(for
(For
ACS
type)
REM HLACS
Wireless R emote C ontroller
Wireless R emote Controller + wal l receiver
REMHL + wall receiver for
ASS/ACS/ADS/FC/SD
Wireless
Wireless Remote
Remote Controller
Controller(for
(ForAWS
A type)
REM HLA WS
Simplified
SimplifiedRemote
RemoteController
Controller
REM HWSM
Remote
RemoteSensor
Sensor
RSM
System
SystemController
Controller
REM HW64S
Weekly
Timer
Schedule
T imer
REM HWT
Wired Remote Controller + timer
REM HWTM
AFNS
AES
IMPORTANT!
Please Read Before Starting
When Installing…
This air conditioning system meets strict safety and operating standards. As the installer or service person, it is an
important part of your job to install or service the system so it
operates safely and efficiently.
…In a Room
Properly insulate any tubing run inside a room to prevent
“sweating” that can cause dripping and water damage to
walls and floors.
For safe installation and trouble-free operation, you must:
● Carefully read this instruction booklet before beginning.
● Follow each installation or repair step exactly as shown.
● Observe all local, state, and national electrical codes.
● This product is intended for professional use.
Permission from the power supplier is required when
installing an outdoor unit that is connected to a 16 A
distribution network.
● Pay close attention to all warning and caution notices
given in this manual.
This symbol refers to a hazard or
unsafe practice which can result
WARNING
in severe personal injury or death.
…In Moist or Uneven Locations
Use a raised concrete pad or concrete blocks to provide a
solid, level foundation for the outdoor unit. This prevents
water damage and abnormal vibration.
CAUTION
…In an Area with High Winds
Securely anchor the outdoor unit down with bolts and a
metal frame. Provide a suitable air baffle.
…In a Snowy Area (for Heat Pump-type Systems)
Install the outdoor unit on a raised platform that is higher
than drifting snow. Provide snow vents.
When Connecting Refrigerant Tubing
• Ventilate the room well, in the event that is refrigerant
gas leaks during the installation. Be careful not to allow
contact of the refrigerant gas with a flame as this will
cause the generation of poisonous gas.
This symbol refers to a hazard or
unsafe practice which can result
in personal injury or product or
property damage.
• Keep all tubing runs as short as possible.
If Necessary, Get Help
• Use the flare method for connecting tubing.
These instructions are all you need for most installation
sites and maintenance conditions. If you require help for a
special problem, contact our sales/service outlet or your
certified dealer for additional instructions.
• Apply refrigerant lubricant to the matching surfaces of
the flare and union tubes before connecting them, then
tighten the nut with a torque wrench for a leak-free connection.
In Case of Improper Installation
• Check carefully for leaks before starting the test run.
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including failure to follow the instructions in this document.
When Servicing
• Turn the power OFF at the main power box (mains)
before opening the unit to check or repair electrical parts
and wiring.
SPECIAL PRECAUTIONS
WARNING
• Keep your fingers and clothing away from any moving
parts.
When Wiring
• Clean up the site after you finish, remembering to check
that no metal scraps or bits of wiring have been left
inside the unit being serviced.
ELECTRICAL SHOCK CAN CAUSE
SEVERE PERSONAL INJURY OR DEATH.
ONLY A QUALIFIED, EXPERIENCED
ELECTRICIAN SHOULD ATTEMPT TO
WIRE THIS SYSTEM.
CAUTION
• Do not supply power to the unit until all wiring and tubing
are completed or reconnected and checked.
• Highly dangerous electrical voltages are used in this system. Carefully refer to the wiring diagram and these
instructions when wiring. Improper connections and inadequate grounding can cause accidental injury or death.
• Ventilate any enclosed areas when installing or testing
the refrigeration system. Escaped refrigerant gas, on
contact with fire or heat, can produce dangerously toxic
gas.
• Ground the unit following local electrical codes.
• Confirm after installation that no refrigerant gas is leaking. If the gas comes in contact with a burning stove, gas
water heater, electric room heater or other heat source,
it can cause the generation of poisonous gas.
• Connect all wiring tightly. Loose wiring may cause overheating at connection points and a possible fire hazard.
When Transporting
Be careful when picking up and moving the indoor and outdoor
units. Get a partner to help, and bend your knees when lifting
to reduce strain on your back. Sharp edges or thin aluminum
fins on the air conditioner can cut your fingers.
i
Check of Density Limit
2. The standards for minimum room volume are as
follows.
The room in which the air conditioner is to be
installed requires a design that in the event of
refrigerant gas leaking out, its density will not
exceed a set limit.
The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of
ammonia, and is not restricted by laws imposed to protect the ozone layer. However, since it contains more
than air, it poses the risk of suffocation if its density
should rise excessively. Suffocation from leakage of
refrigerant is almost non-existent. With the recent
increase in the number of high density buildings, however, the installation of multi air conditioner systems is
on the increase because of the need for effective use
of floor space, individual control, energy conservation
by curtailing heat and carrying power, etc.
Most importantly, the multi air conditioner system is
able to replenish a large amount of refrigerant compared to conventional individual air conditioners. If a
single unit of the multi air conditioner system is to be
installed in a small room, select a suitable model and
installation procedure so that if the refrigerant accidentally leaks out, its density does not reach the limit
(and in the event of an emergency, measures can be
made before injury can occur).
In a room where the density may exceed the limit,
create an opening with adjacent rooms, or install
mechanical ventilation combined with a gas leak
detection device. The density is as given below.
(1) No partition (shaded portion)
(2) When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas
(opening without a door, or an opening 0.15% or
larger than the respective floor spaces at the top
or bottom of the door).
Outdoor unit
Refrigerant tubing
Indoor unit
(3) If an indoor unit is installed in each partitioned
room and the refrigerant tubing is interconnected,
the smallest room of course becomes the object.
But when mechanical ventilation is installed interlocked with a gas leakage detector in the smallest
room where the density limit is exceeded, the volume of the next smallest room becomes the object.
Refrigerant tubing
Total amount of refrigerant (kg)
Outdoor unit
Min. volume of the indoor unit installed room (m3)
≤ Density limit (kg/m3)
Very
small
room
The density limit of refrigerant which is used in multi air conditioners is 0.3 kg/m3 (ISO 5149).
Indoor unit
Small
room
NOTE
Medium
room
Large room
Mechanical ventilation device – Gas leak detector
1. If there are 2 or more refrigerating systems in a single refrigerating device, the amount of refrigerant
should be as charged in each independent device.
3. The minimum indoor floor space compared with the
amount of refrigerant is roughly as follows: (When
the ceiling is 2.7 m high)
For the amount of charge in this example:
Outdoor unit
e.g., charged
amount (10 kg)
40
e.g., charged
amount (15 kg)
m2 35
30
Min. indoor floor space
Indoor unit
Room A Room B Room C Room D Room E Room F
The possible amount of leaked refrigerant gas in rooms
A, B and C is 10 kg.
The possible amount of leaked refrigerant gas in rooms
D, E and F is 15 kg.
25
20
15
10
5
0
ii
Range below the
density limit
of 0.3 kg/m3
(countermeasures
not needed)
Range above
the density limit
of 0.3 kg/m3
(countermeasures
needed)
10
20
30
Total amount of refrigerant
kg
Mini Multiset VRF DCI
Contents
1. Outiline of Mini Multiset
1. Line-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2. Design of Mini Multiset
1. Model Selecting and Capacity Calculator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2. System Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
3. Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
4. Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
3. Mini Multiset unit specifications
1. Outdoor Unit
1-1.
1-2.
1-3.
1-4.
1-5.
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Major Component Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Refrigerant Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Sound Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
4. Test Run and Others
1. Air Purging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
2. Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
2-1.
2-2.
2-3.
2-4
2-5.
2-6.
Preparing for Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Test Run Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Outdoor Unit PCB Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
Auto Address Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
Caution for Pump Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16
Meaning of Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16
3. Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18
3-1. General Precautions on Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18
3-2. Recommended Wire Length and Wire Diameter for Power Supply System . . . . . . . . . . . . . . . . . . . .4-18
3-3. Wiring System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19
4. Installation Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-22
4-1. Check of Density Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-22
4-2. Precautions for Installation Using New Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23
iii
Outline of Mini Multiset
Contents
1. Outiline of Mini Multiset
1. Line-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
1
1-1
Outline of Mini Multiset
1. Line-up
Outdoor units
DC inverter unit
Type
AES 04 MMIH
AES 05 MMIH
AES 06 MMIH
Capacity:
kW (BTU/h)
11.2 (38,200)
14.0 (47,800)
15.5 (52,900)
Cooling /
Heating
/ 12.5 (42,700)
/ 16.0 (54,600)
/ 17.6 (60,000)
Wind
direction 13
940
10
13
15
380
405
219 150
Wind direction
13
13
10
110
296
340
70
66
20
170
1
Outdoor
Unit
Wind
direction
1230
81
Wind
direction
141
AES 04 MMIH
AES 05 MMIH
1 -2
AES 06 MMIH
168
60
36
60
110
130
72
121
71
120
140
167
197
198
18
173
573
600
99
20
Design of Mini Multiset
2. Design of Mini Multiset
1. Model Selecting and Capacity Calculator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-2
2. System Design . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-13
3. Installation Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-25
4. Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-34
2
2-1
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
1-1. Operating Range
Heating
Cooling
25
45
43
20
35
15
Outdoor air intake temp. °C (WB)
40
2
Outdoor air intake temp. °C (DB)
30
25
Operating
range
20
15
10
5
Operating
range
0
–5
–10
10
–15
5
–20
0
10
15
20
25
30
35
Indoor air intake temp. °C (DB)
–5
–10
–15
14
10
15
20
25
30
Indoor air intake temp. °C (WB)
2-2
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
1-2. Procedure for Selecting Models and Calculating Capacity
■ Model Selection Procedure
Select the model and calculate the capacity for each refrigerant system according to the procedure shown below.
Calculation of the indoor air-conditioning load
●
Calculate the maximum air-conditioning load for each room or zone.
Selection of an air conditioning system
●
Select the ideal air conditioning system for air conditioning of each room or zone.
Design of the control system
●
Design a suitable control system for the selected air conditioning system.
Preliminary selection of indoor and outdoor units
●
Make preliminary selections that are within the allowable range for the system. .................. 2-2
Check of the tubing length and elevation difference
●
Check that the length of refrigerant tubing and the elevation difference are within the allowable
ranges. ................................................................................................................ 2-4, 2-15 – 2-16
Calculation of the corrected outdoor unit capacity
●
●
●
Capacity correction coefficient for outdoor temperature conditions ..........................2-4, 2-6 – 2-7
Capacity correction coefficient for tubing length and elevation difference ........................ 2-4, 2-8
Heating capacity correction coefficient for frosting/defrosting ............................................2-4, 2-7
Calculation of the corrected capacity for each indoor unit
●
●
Capacity correction coefficient for indoor temperature conditions ......................................2-4, 2-8
Capacity distribution ratio based on the tubing length and elevation difference....2-4, 2-15 – 2-16
Calculation of the actual capacity for each indoor unit
●
●
Calculate the corrected indoor/outdoor capacity ratio, based on the corrected outdoor unit
capacity and the total corrected capacity of all indoor units in the same system. Use the result to
calculate the capacity correction coefficient for the indoor units. ....................................2-4 – 2-8
Multiply the corrected capacity of each indoor unit by the capacity correction coefficient to calculate the actual capacity for each indoor unit. ............................................................................ 2-6
Recheck of the actual capacity for each indoor unit
●
If the capacity is inadequate, reexamine the unit combinations.
Example 1: Increasing the outdoor unit capacity ........................................................ 2-17 – 2-18
Example 2: Increasing the indoor unit capacity .......................................................... 2-17 – 2-18
●
Create a tubing design which minimizes the amount of additional refrigerant charge as much as
possible. ......................................................................................................................2-14 – 2-15
If tubing extension is expected in the future, create the tubing design with adequate consideration for this extension.
Select the tubing size for the main tube (LA) up to the No. 1 distribution joint based on the rated
cooling capacity of the outdoor unit. Select tubing sizes after the distribution point based on the
total rated cooling capacity of the connected indoor units.
Design of tubing
●
●
Calculation of additional refrigerant charge amount
●
●
Calculate the additional refrigerant charge from the diameters and lengths of the refrigerant tubing. Even if the gas tubing diameter was increased, determine the additional refrigerant charge
based only on the liquid tubing size. ...................................................................................... 2-21
Check the minimum indoor capacity (limit density) with respect to the amount of refrigerant. If the
limit density is exceeded, be sure to install ventilation equipment or take other corrective steps. 2-22
Design of electrical wiring capacity
●
Select a wiring capacity according to the method of power supply. ...................................... 2-32
2-3
2
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
1-3. Calculation of Actual Capacity of Indoor Unit
■ Calculating the actual capacity of each indoor unit
Because the capacity of a multi air-conditioner changes according to the temperature conditions, tubing length,
elevation difference and other factors, select the correct model after taking into account the various correction values. When selecting the model, calculate the corrected capacities of the outdoor unit and each indoor unit. Use the
corrected outdoor unit capacity and the total corrected capacity of all the indoor units to calculate the actual final
capacity of each indoor unit.
1. Outdoor unit capacity correction coefficient
Find the outdoor unit capacity correction coefficient for the following items.
2
(1) Capacity correction for the outdoor unit temperature conditions
From the graph of capacity characteristics on page 2-6, use the outdoor temperature to find the capacity correction coefficient.
(2) Capacity correction for the outdoor unit tubing length and elevation difference
From the graph of capacity change characteristics on page 2-7, use the tubing length and elevation difference
to find the capacity correction coefficient.
The outdoor unit correction coefficient is the value which corresponds to the most demanding indoor unit.
(3) Capacity correction for outdoor unit frosting/defrosting during heating
From the table on page 2-7, find the capacity correction coefficient.
2. Indoor unit capacity correction coefficients
Find the indoor unit capacity correction coefficient for the following items.
(1) Capacity correction for the indoor unit temperature conditions
From the graph of capacity characteristics on page 2-8, use the indoor temperature to find the capacity correction coefficient.
(2) Capacity distribution ratio based on the indoor unit tubing length and elevation difference
First, in the same way as for the outdoor unit, use the tubing length and elevation difference for each indoor unit
to find the correction coefficient from the graph of capacity change characteristics on page 2-8. Then divide the
result by the outdoor unit correction coefficient to find the capacity distribution ratio for each indoor unit.
Capacity distribution ratio for each indoor unit (2) = Correction coefficient for that indoor unit / Correction coefficient for the outdoor unit
3. Calculating the corrected capacities for the outdoor unit and each indoor unit
The corrected capacities for the outdoor unit and each indoor unit are calculated form the formula below.
<Cooling>
● Outdoor unit corrected cooling capacity (5) = Outdoor unit rated cooling capacity × Correction coefficient for outdoor temperature conditions ((1) Page 2-6) × Correction coefficient
for tubing length and elevation difference ((2) Page 2-8)
* However, if the outdoor unit corrected cooling capacity [5] is greater than 100%, then the outdoor unit corrected cooling
capacity [5] is considered to be 100%.
●
Corrected cooling capacity of each indoor unit (5) = Rated cooling capacity for that indoor unit × Correction coefficient for indoor temperature conditions at that indoor unit ((1) Page 2-7) × Distribution ratio based on tubing
length and elevation difference at that indoor unit ((2) Page 2-8)
However, the corrected cooling capacity of each indoor unit is found as shown below.
If (1) < 100% and (1) × (2) > 100%: Corrected cooling capacity for that indoor unit [5] = Rated cooling capacity for that indoor unit
If (1) ≥ 100%: Corrected cooling capacity for that indoor unit (5) = Rated cooling capacity for that indoor unit × (1)
2-4
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
<Heating>
●
Outdoor unit corrected heating capacity (5) = Outdoor unit rated heating capacity × Correction coefficient for outdoor temperature conditions ((1) Page 2-6) × Correction coefficient
for tubing length and elevation difference ((2) Page 2-8) × Correction coefficient for frosting/defrosting ((2) Page 2-7)
* However, if the outdoor unit corrected heating capacity [5] is greater than 100%, then the outdoor unit corrected heating
capacity is considered to be 100%.
●
Corrected heating capacity of each indoor unit (5) = Rated heating capacity for that indoor unit × Correction coefficient for indoor temperature conditions at that indoor unit ((1) Page 2-6) × Distribution ratio based on tubing
length and elevation difference at that indoor unit ((2) Page 2-8).
However, the corrected heating capacity of each indoor unit is found as shown below.
If (1) < and
100%elevation
and (1) × (2)
> 100%: Corrected
heating
capacity
for that
indoor unit (5) = Rated heating capacity for that indoor unit
length
difference
at that indoor
unit
((3) Page
2-72)
If (1) ≥ 100%: Corrected heating capacity for that indoor unit (5) = Rated heating capacity for that indoor unit × (1)
* Characteristic graphs are shown on the pages listed above next to each correction item.
Find each correction coefficient from the appropriate conditions.
4. Calculating the actual indoor unit capacity based on the indoor/outdoor corrected capacity ratio
Calculate the actual capacity of each indoor unit from the values (found in (3)) for the corrected outdoor unit capacity and the corrected capacity of each indoor unit.
<Cooling capacity>
Corrected indoor/outdoor capacity ratio during cooling (Ruc) = Total corrected cooling capacity of all indoor units in
that system / Corrected outdoor unit cooling capacity
If the corrected outdoor unit cooling capacity is greater than or equal to the total corrected unit cooling capacity of
all indoor units in that system (Ruc ≤ 1), then:
Actual cooling capacity of each indoor unit (7) = Corrected cooling capacity of each indoor unit (5)
(In other words, the correction coefficient (6), based on the corrected indoor/outdoor capacity ratios for each
indoor unit, is 1.)
If the corrected outdoor unit cooling capacity is less than the total corrected unit cooling capacity of all indoor units
in that system (Ruc > 1), then:
(Actual cooling capacity of each indoor unit (7)) = (Corrected cooling capacity of each indoor unit (5)) × (0.25 ×
Ruc + 0.75) / Ruc
(In other words, the correction coefficient (6), based on the corrected indoor/outdoor capacity ratios for each
indoor unit, is the underlined part in the formula above.)
<Heating capacity>
Corrected indoor/outdoor capacity ratio during heating (Ruh) = Total corrected heating capacity of all indoor units in
that system / Corrected outdoor unit heating capacity
If the corrected outdoor unit heating capacity is greater than or equal to the total corrected unit heating capacity of
all indoor units in that system (Ruh ≤ 1), then:
Actual heating capacity of each indoor unit (7) = Corrected heating capacity of each indoor unit (5)
(In other words, the correction coefficient (6), based on the corrected indoor/outdoor capacity ratios for each
indoor unit, is 1.)
If the corrected outdoor unit heating capacity is less than the total corrected unit heating capacity of all indoor units
in that system (Ruh > 1), then:
(Actual heating capacity of each indoor unit (7)) = (Corrected heating capacity of each indoor unit (5)) × (0.1 ×
Ruh + 0.9) / Ruh
(In other words, the correction coefficient (6), based on the corrected indoor/outdoor capacity ratios for each
indoor unit, is the underlined part in the formula above.)
2-5
2
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
Indoor unit capacity correction coefficient
Refer to the graph below for the correction coefficients for Ruc and Ruh.
2
Indoor unit capacity correction coefficient for Ruc (cooling)
Indoor unit capacity correction coefficient for Ruh (heating)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.5
0.6
0.7
0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7
Corrected indoor/outdoor capacity ratio (Ruc or Ruh)
1.8 1.9
2.0
Note: When Ruc or Ruh is less than or equal to 1.0, the indoor unit capacity correction coefficient for both Ruc and Ruh is 1.0.
5. Graph of capacity correction coefficients
■ Graph of outdoor unit capacity characteristics (1 – (1))
Capacity ratio (%)
Outdoor unit cooling capacity characteristics
120
22WB
100
104 (1)
100 (2)
90 (1)
80 (2)
19WB
80
16WB
–10
35
38
Outdoor air intake temp. (°C DB)
2-6
43
(1) AES 04 MMIH
AES 05 MMIH
(2) AES 06 MMIH
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
Outdoor unit heating capacity characteristics
AES 05 MMIH
130
( C DB)
120
15
110
20
100
90
25
80
70
60
50
0
40
–20 –15 –10 –5 0
5 10 15
Outdoor air intake temp. ( C DB)
Capacity ratio (%)
Capacity ratio (%)
AES 04 MMIH
130
120
110
100
90
80
70
60
50
0
40
–20 –15 –10 –5
( C DB)
15
20
25
0
5
10
2
15
Outdoor air intake temp. ( C DB)
Capacity ratio (%)
AES 06 MMIH
130
120
110
100
90
80
70
60
50
40
0
–20 –15 –10 –5
( C DB)
15
20
25
0
5
10
15
Outdoor air intake temp. ( C DB)
■ Outdoor unit heating capacity correction coefficient during frosting/defrosting (1 – (2))
Outdoor intake air
temp. (°C WB RH 85%)
–20
–15
–10
–8
–6
–5
–4
–2
–1
0
1
2
3
4
5
6
Correction
coefficient
0.97
0.97
0.97
0.96
0.94
0.91
0.89
0.87
0.87
0.87
0.88
0.89
0.91
0.92
0.95
1.0
* To calculate the heating capacity with consideration for frosting/defrosting operation, multiply the heating capacity
found from the capacity graph by the correction coefficient from the table above.
2-7
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
■ Graph of indoor unit capacity characteristics (2 – (1))
2
indicates the rating point.
120
110
100
90
80
14 15 16 17 18 19 20 21 22 23 24 25
Indoor air intake temp. (°C WB)
Indoor unit heating capacity characteristics
Rate of heating capacity change (%)
Rate of cooling capacity change (%)
Indoor unit cooling capacity characteristics
indicates the rating point.
110
105
100
95
90
15 16 17 18 19 20 21 22 23 24 25 26 27
Indoor air intake temp. (°C DB)
■ Graph of capacity change characteristics resulting from tubing length and elevation difference (1 • 2 – (2))
<Cooling>
Elevation difference (m)
50
94
40
96
30
20
10
98
100
%
0
-10
-20
-30
-40
0
Base capacity
change rate (%)
90 88 86 84 82 80 78 76
50
Elevation difference (m)
Base capacity
change rate (%) 92
<Heating>
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Equivalent length (m)
97
96
95
94
93
92
91
98
40
30
99
20
100
10 %
0
-10
-20
-30
-40
0
10 20 30 40 50 60 70 80 90 100 110 120 130 140 150
Equivalent length (m)
The positive side for the elevation difference indicates that the outdoor unit is installed at a higher position than the
indoor units. The negative side indicates the opposite.
2-8
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
1-4. Capacity Correction Graph According to Temperature Condition
■ Capacity characteristics
(The corrected capacity for specific temperature conditions can be found from the graphs below and next page.)
Capacity ratio (%)
<COOLING>
120
22WB
100
104 (1)
100 (2)
90 (1)
80 (2)
19WB
80
16WB
35
–10
38
(1) AES 04 MMIH
AES 05 MMIH
(2) AES 06 MMIH
43
Outdoor air intake temp. (°C DB)
Capacity ratio (%)
92
104 100 112
124 (1)
118 (1)
114 (2)
108 (2)
100 (2)
100
22WB
(1) AES 04 MMIH
AES 05 MMIH
19WB
63
50
50
(2) AES 06 MMIH
16WB
33
–10
35
38
Outdoor air intake temp. (°C DB)
2-9
43
2
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
<HEATING>
Input ratio (%)
2
130
120
110
100
90
80
70
60
50
40
( C DB)
15
20
25
130
120
110
15
100
90
20
80
70
25
60
50
–20 –15 –10 –5 0
5 10 15
Outdoor air intake temp. ( C DB)
Capacity ratio (%)
AES 05 MMIH
Input ratio (%)
Capacity ratio (%)
AES 04 MMIH
130
120
110
100
90
80
70
60
50
40
( C DB)
15
20
25
130
120
110
100
90
80
70
60
50
–20 –15 –10 –5
15
20
25
0
5
10
15
Outdoor air intake temp. ( C DB)
Capacity ratio (%)
130
120
110
100
90
80
70
60
50
40
Input ratio (%)
AES 06 MMIH
130
120
110
100
90
80
70
60
50
–20 –15 –10 –5
( C DB)
15
20
25
15
20
25
0
5
10
15
Outdoor air intake temp. ( C DB)
NOTE
For model combinations (inverter model + constant-speed model) of 22 HP or higher, the lower limit for the outdoor air intake temperature is 5°C.
However, when the inverter model (AES------MMIH) is used separately, the lower limit for the outdoor air
intake temperature is –5°C.
2 - 10
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
●
Inverter model rated performance values
Item
Cooling
Heating
Model (SPW-)
Cooling
capacity
(kW)
Power
consumption
(kW)
Heating
capacity
(kW)
Power
consumption
(kW)
AES 04 MMIH
11.2
2.76
12.5
2.88
AES 05 MMIH
14.0
3.83
16.0
3.90
AES 06 MMIH
15.5
4.57
17.6
4.58
■ Outdoor unit heating capacity correction coefficient during frosting/defrosting (1 – (3))
Outdoor intake air
temp. (°C WB RH 85%)
–20
–15
–10
–8
–6
–5
–4
–2
–1
0
1
2
3
4
5
6
Correction
coefficient
0.97
0.97
0.97
0.96
0.94
0.91
0.89
0.87
0.87
0.87
0.88
0.89
0.91
0.92
0.95
1.0
* To calculate the heating capacity with consideration for frosting/defrosting operation, multiply the heating capacity
found from the capacity graph by the correction coefficient from the table above.
1-5. Capacity Correction Graph According to Tubing Length and Elevation Difference
■ Capacity change characteristics
<Cooling>
Base capacity
change rate (%)
Elevation difference (m)
50
40
92 90
88
86
84
82
80
78
76
94
30
96
20
98
*1
100
%
10
0
–10
–20
–30
–40
0
10
20
30
40
50
60
70
80
90 100 110 120 130 140 150
Equivalent length (m)
<Heating>
Base capacity
change rate (%)
50
Elevation difference (m)
40
97
96
95
94
93
92
91
98
30
99
20
*1
100
%
10
0
–10
–20
–30
–40
0
10
20
30
40
50
60
70
80
90 100 110 120 130 140 150
Equivalent length (m)
2 - 11
2
Design of Mini Multiset
1. Model Selecting and Capacity Calculator
For CR365, 485GX(H)56 units
■ If the maximum tubing length (L1) exceeds 90 m (equivalent length), increase the tubing size of the main gas
tube (LM) by one rank.
* The size increase is applied to the gas tube only. In addition, for a 6 HP unit it is not necessary to increase the
tubing size.
■ Increasing the tubing size of the gas tubes can reduce the loss of capacity caused by longer tubing lengths.
Refer to Table 1 to increase the tubing size. However, the maximum allowable tubing length must not be exceeded.
* The size increase is applied to the LM gas tube (main tube with the largest diameter) only, and is limited to the
cases shown in Table 1. In addition, the amount of additional refrigerant charge is determined from the liquidtube size only.
* In case of 6PS, increasing the size of the gas tube is not possible.
2
Table 1 Correction coefficient for equivalent length when the size of the gas tube (LM) is increased
Standard tube diameter (gas tube, mm)
ø15.88
Tube diameter after change (gas tube, mm)
ø19.05
Equivalent length correction coefficient
0.4
* When increasing the size of the gas tubing (LM), multiply by the correction coefficient from Table 1 and calculate the
equivalent length for section LM.
Tubing equivalent length after size increase = Standard tubing equivalent length × Equivalent length correction coefficient
WARNING
The upper limit for tubing size is ø19.05. Tubing above that size cannot be used.
2 - 12
Design of Mini Multiset
2. System Design
2-1.
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
2-3. Type of Copper Tube and Insulation Material
Tools Required for Installation (not supplied)
Standard screwdriver
Phillips head screwdriver
Knife or wire stripper
Tape measure
Carpenter’s level
Sabre saw or key hole saw
Hacksaw
Core bits
Hammer
Drill
Tube cutter
Tube flaring tool
Torque wrench
Adjustable wrench
Reamer (for deburring)
If you wish to purchase these materials separately
from a local source, you will need:
1. Deoxidized annealed copper tube for refrigerant
tubing.
2. Foamed polyethylene insulation for copper tubes as
required to precise length of tubing. Wall thickness
of the insulation should be not less than 8 mm.
3. Use insulated copper wire for field wiring. Wire
size varies with the total length of wiring. Refer to
5. ELECTRICAL WIRING for details.
CAUTION
2-2. Accessories Supplied with Outdoor Unit
Table 2-1 (Outdoor Unit)
Quantity
Part name
Figure
365 Model 485 Model 605 Model
Tube Discharge
Assy
Instruction manual
paper
(4 hp)
(5 hp)
(6 hp)
0
0
1
1
1
1
hp = horsepower
2-4. Additional Materials Required for Installation
1. Refrigeration (armored) tape
2. Insulated staples or clamps for connecting wire
(See your local codes.)
3. Putty
4. Refrigeration tubing lubricant
5. Clamps or saddles to secure refrigerant tubing
6. Scale for weighing
2 - 13
Check local electrical codes
and regulations before
obtaining wire. Also, check
any specified instructions
or limitations.
2
Design of Mini Multiset
2. System Design
2-5. Tubing Size
Table 2-2 Main Tubing Size (LA)
kW
System
horsepower
11.2
14.0
15.5
4
5
6
Gas tubing
(mm)
ø15.88
Liquid tubing
(mm)
2
ø19.05
ø9.52
Unit: mm
Table 2-3 Main Tubing Size After Distribution (LB, LC...)
Below kW
Total capacity
after distribution
Tubing size
7.1
11.2
14.0
15.5
(2.5 hp)
(4 hp)
(5 hp)
(6 hp)
7.1
–
Over kW
(2.5 hp)
Gas tubing (mm)
ø12.7
Liquid tubing (mm)
ø9.52
ø15.88
ø19.05
ø9.52
Unit: mm
hp = horsepower
Note: In case the total capacity of connected indoor units exceeds the total capacity of the outdoor units, select the main
tubing size for the total capacity of the outdoor units.
Table 2-4 Indoor Unit Tubing Connection (
Indoor unit type
Gas tubing (mm)
Liquid tubing (mm)
22
28
1,
45
36
ø12.7
ø6.35
2...
n–1)
56
73
106
140
ø15.88
ø9.52
-Unit: mm
2-6. Straight Equivalent Length of Joints
Design the tubing system by referring to the following table for the straight equivalent length of joints.
Table 2-5 Straight Equivalent Length of Joints
Gas tubing size (mm)
12.7
15.88
19.05
90° elbow
0.30
0.35
0.42
45° elbow
0.23
0.26
0.32
U-shape tube bend (R60 100 mm)
0.90
1.05
1.26
Trap bend
2.30
2.80
3.20
Y-branch distribution joint
Equivalent length conversion not needed.
Ball valve for service
Equivalent length conversion not needed.
Table 2-6 Required Copper Tubing Dimensions
Material
Copper tubing
Unit: mm
O
Outer diameter
6.35
9.52
12.7
15.88
19.05
Wall thickness
0.8
0.8
0.8
1.0
1.0
2 - 14
Design of Mini Multiset
2. System Design
2-7. Additional Refrigerant Charge
Additional refrigerant charge amount is calculated from the liquid tubing total length as follows.
Table 2-7 Amount of Refrigerant Charge Per Meter, According to Liquid Tubing Size
Liquid tubing size
Amount of refrigerant
charge/m (g/m)
ø6.35
26
Required amount of charge = (Amount of refrigerant
charge per meter of each size of liquid tube × its tube
length) + (...) + (...)
ø9.52
56
*Always charge accurately using a scale for weighing.
2
Table 2-8 Refrigerant Charge Amount at Shipment (for outdoor unit)
Heat pump unit
AES 04 MMIH
(kg)
Cooling only unit
(kg)
AES 05 MMIH
3.5
AES 06 MMIH
3.5
AES 04 MMIH
3.5
AES 05 MMIH
3.5
AES 06 MMIH
3.5
3.5
2-8. System Limitations
Table 2-9 System Limitations
Outdoor units (Type)
Number of max. connectable indoor units
365
485
605
6
8
9
Max. allowable indoor/outdoor capacity ratio
50
130%
2-9. Tubing Length
Select the installation location so that the length and size of refrigerant tubing are within the allowable range shown
in the figure below.
L1
L2
LA
LB
Main tube of unit
LC
LD
n
H1
1st branch
L3
1
2
3
n-1
H2
Unit distribution tube
Note: Do not use commercially available T-joints for the liquid tubing.
* Be sure to use special R410A distribution joints (DDVI: purchased separately) for outdoor
unit connections and tubing branches.
2 - 15
R410A distribution joint
DDVI 16 (for indoor unit)
Design of Mini Multiset
2. System Design
Table 2-10 Ranges that Apply to Refrigerant Tubing Lengths and to Differences in Installation Heights
Items
Marks
Contents
L1
L (L2 – L3)
Allowable tubing
length
1
1
+ 2 +~
H1
Allowable elevation
difference
H2
n
n–1
+L1
Equivalent length
> 175
Difference between max. length and min .
length from the No.1 distribution joint
> 40
Max. length of each distribution tube
> 30
Total max. tubing length including length of
each distribution tube (only liquid tubing)
> 200
When outdoor unit is installed higher than indoor unit
> 50
When outdoor unit is installed lower than indoor unit
> 40
> 15
Max. difference between indoor units
L = Length, H = Height
Always check the gas density limit for the room in
which the unit is installed.
2-10. Check of Limit Density
Minimum indoor volume & floor area as against the
amount of refrigerant is roughly as given in the following table.
When installing an air conditioner in a room, it is necessary to ensure that even if the refrigerant gas accidentally leaks out, its density does not exceed the
limit level for that room.
If the density could exceed the limit level, it is necessary to provide an opening between the unit and the
adjacent room, or to install mechanical ventilation
which is interlocked with the leak detector.
(Total refrigerant charged amount: kg)
(Min. indoor volume where the indoor unit is installed: m3)
≤ Limit density 0.3 (kg/m3)
The limit density of refrigerant which is used in this
unit is 0.3 kg/m3 (ISO 5149).
The shipped outdoor unit comes charged with the
amount of refrigerant fixed for each type, so add it to
the amount that is charged in the field. (For the refrigerant charge amount at shipment, refer to the unit’s
nameplate.)
CAUTION
Pay special attention to
any location, such as a
basement, etc., where leaking refrigerant can accumulate, since refrigerant
gas is heavier than air.
2 - 16
m2
100
95
90
85
80
75
70
65
60
55
50
45
40
35
30
25
20
15
Min. indoor volume
WARNING
Min. indoor floor area
(when the ceiling is 2.7 m high)
2
, 2~
Actual length
Max. tubing length
Length (m)
> 150
m3
270.0
256.5
243.0
229.5
216.0
202.5
189.0
175.5
162.0
148.5
135.0
121.5
108.0
94.5
81.0
67.5
54.0
40.5
Range below the
density limit of
0.3 kg/m3
(Countermeasures
not needed)
Range above the
density limit of
0.3 kg/m3
(Countermeasures
needed)
20
30
40
50
60
70
Total amount of refrigerant
80 kg
Design of Mini Multiset
2. System Design
2-11. System Example
(1) Below are the tables created using the “Sanyo PAC/GHP System Diagram Software.”
Details of the calculations are shown in (2).
Outdoor
unit
50 m
Elevation
difference: 10 m
Indoor
unit 1
10 m
20 m
20 m
10 m
10 m
10 m
Indoor
unit 2
Indoor
unit 3
Indoor
unit 4
2
Selection conditions
Assumes that installation is in a 50 Hz region.
Outdoor unit
Selected model
AES 04 MMIH
Air condition
Cooling (DB/WB)
Max. load (kW)
33.0 / 22.5
Air condition
Heating (DB/WB)
Max. load (kW)
3.0 / 2.0
Room 1
Room 2
Room 3
Room 4
(indoor unit 1) (indoor unit 2) (indoor unit 3) (indoor unit 4)
Type 56
Type22
Type22
Type 22
26.0 / 18.0
26.0 / 18.0
26.0 / 18.0
26.0 / 18.0
5.4
1.8
2.1
2.1
21.0 / 13.0
21.0 / 13.0
21.0 / 13.0
21.0 / 13.0
5.6
2.3
2.3
2.3
Actual tubing length
100 m
60 m
70 m
90 m
100 m
Equivalent length (with
consideration for curves,etc.)
120 m
72 m
84 m
108 m
120 m
Room 3
(indoor unit 3)
Type 22
Room 4
(indoor unit 4)
Type 22
Preliminary selection
Outdoor unit
Selected model
AES 05 MMIH
Load (cooling/heating) (kW)
Rated capacity
(cooling/heating) (kW)
(5) Corrected capacity
(cooling/heating) (kW)
Room 1
Room 2
(indoor unit 1) (indoor unit 2)
Type 56
Type 22
5.4 / 5.6
1.8 / 2.3
2.1 / 2.3
2.1 / 2.3
14.0 / 16.0
5.6 / 6.3
2.2 / 2.5
2.2 / 2.5
2.2 / 2.5
11.17 / 13.20
5.60 / 5.96
2.20 / 2.35
2.11 / 2.31
2.05 / 2.29
5.32 / 5.96
2.09 / 2.35
2.00 / 2.31
1.95 / 2.29
(7) Actual capacity
(cooling/heating) (kW)
Total corrected capacity of indoor units (cooling/heating) = 11.96 / 12.91
Ruc = 11.96 / 11.17 = 1.071 > 1 Ruh = 12.91 / 13.20 = 0.978 < 1
Outdoor unit changes
During heating, the corrected outdoor unit capacity is less than the total corrected capacity of all indoor units
in the system. As a result, the actual capacity of each indoor unit is less than the maximum load. Therefore
the outdoor unit is increased by one rank.
Room 1
Room 2
Room 3
Room 4
Outdoor unit
(indoor unit 1) (indoor unit 2) (indoor unit 3) (indoor unit 4)
Type 56
Type 22
Type 22
Type 22
AES 06 MMIH
Selected model
Maximum load
(cooling/heating) (kW)
Rated capacity
(cooling/heating) (kW)
(5) Corrected capacity
(cooling/heating) (kW)
(7) Actual capacity
(cooling/heating) (kW)
5.4 / 5.6
1.8 / 2.3
2.1 / 2.3
2.1 / 2.3
16.0 / 18.0
5.6 / 6.3
2.2 / 2.5
2.2 / 2.5
2.2 / 2.5
12.77 / 14.85
5.60 / 5.96
2.20 / 2.35
2.11 / 2.31
2.05 / 2.29
5.60 / 5.96
2.20 / 2.35
2.11 / 2.31
2.05 / 2.29
Total corrected capacity of all indoor units (cooling/heating) = 11.96 / 12.91
Ruc = 11.96 / 12.77 = 0.937 < 1 Ruh = 12.91 / 14.85 = 0.869 < 1
2 - 17
Design of Mini Multiset
2. System Design
Indoor unit changes
The indoor unit in room 4, where the corrected indoor unit capacity is less than the maximum load, is
increased by one rank.
Outdoor unit
Selected model
AES 06 MMIH
Room 1
Room 2
(indoor unit 1) (indoor unit 2)
Type 56
Type 22
Maximum load
(cooling/heating) (kW)
Rated capacity
(cooling/heating) (kW)
5.4 / 5.6
1.8 / 2.3
2.1 / 2.3
2.1 / 2.3
16.0 / 18.0
5.6 / 6.3
2.2 / 2.5
2.2 / 2.5
2.8 / 3.2
12.77 / 14.85
5.60 / 5.96
2.20 / 2.35
2.11 / 2.31
2.62 / 2.93
5.60 / 5.96
2.20 / 2.35
2.11 / 2.31
2.62 / 2.93
Total corrected capacity of all indoor units (cooling/heating) = 12.53 / 13.55
Ruc = 12.53 / 12.77 = 0.981 < 1 Ruh = 13.55 / 14.85 = 0.913 < 1
•For both cooling and heating in all rooms, actual capacity is now greater than or equal to the maximum
load. Selection is completed.
(2) Calculate the final selection results according to the capacity calculation procedure.
[From calculation of the correction coefficient to calculation of actual capacity]
Outdoor unit
Rated capacity
(cooling/heating) (kW)
Correction coefficient
2
(5) Corrected capacity
(cooling/heating) (kW)
(7) Actual capacity
(cooling/heating) (kW)
Room 3
Room 4
(indoor unit 3) (indoor unit 4)
Type 22
Type 28
Room 1
Room 2
(indoor unit 1) (indoor unit 2)
16.0 / 18.0
(Cooling/heating)
Room 3
Room 4
(indoor unit 3) (indoor unit 4)
5.6 / 6.3
2.2 / 2.5
2.2 / 2.5
2.8 / 3.2
(1) Model
1.00 / 1.00
(2) Temp. condition
1.00 / 1.00
0.934 / 0.917
0.934 / 0.917
0.934 / 0.917
0.934 / 0.917
0.798 / 0.927
0.882 / 0.956
0.861 / 0.950
0.819 / 0.934
0.798 / 0.927
0.944 / 1.198
0.922 / 1.190
0.877 / 1.170
1.000 / 1.000
Result of (2) × (3)
1.032 / 0.964
1.008 / 0.940
0.959 / 0.924
0.934 / 0.917
Correction coefficient
applied to indoor unit *1
1.000 / 0.946
1.000 / 0.940
0.959 / 0.924
0.934 / 0.917
5.60 / 5.96
2.20 / 2.35
2.11 / 2.31
2.62 / 2.93
2.20 / 2.35
2.11 / 2.31
2.62 / 2.93
(3) Tubing length,
elevation difference
Distribution ratio
(4) Frosting • defrosting
(5) Corrected capacity (kW) *2
(6) Correction coefficient
for corrected capacity
ratio
(7) Actual capacity (kW)
— / 0.89
12.77 / 14.85
1.00 / 1.00
5.60 / 5.96
*1: This varies depending on the values of (2) and (2) × (Distribution ratio in (3)).
*2: Corrected outdoor unit capacity = Rated outdoor unit capacity × (1) × (2) × (3) × (4)
The actual capacity is calculated as shown below.
Cooling: Ruc = (5.60 + 2.20 + 2.11 + 2.62) / 12.77 = 0.981 < 1
Therefore,
Actual cooling capacity of each indoor unit = Corrected cooling capacity of each indoor unit
(In other words, the correction coefficient [6] for the corrected capacity ratio is 1.)
Heating: Ruh = (5.96 + 2.35 + 2.31 + 2.93) / 14.85 = 0.913 < 1
Therefore,
Actual heating capacity of each indoor unit = Corrected heating capacity of each indoor unit
(In other words, the correction coefficient (6) for the corrected capacity ratio is 1.)
2 - 18
Design of Mini Multiset
2. System Design
2-12. Example of Tubing Size Selection and Refrigerant Charge Amount
Additional refrigerant charging
Based on the values in Tables 2-2, 2-3, 2-4 and 2-7, use the liquid tubing size and length, and calculate the
amount of additional refrigerant charge using the formula below.
Required additional
–3
refrigerant charge (kg) = [56 × (a) + 26 × (b)] × 10
(a): Liquid tubing
●
Total length of ø9.52 (m)
(b): Liquid tubing
Total length of ø6.35 (m)
Charging procedure
2
Be sure to charge with R410A refrigerant in liquid form.
1. After performing a vacuum, charge with refrigerant from the liquid tubing side. At this time, all valves must be
in the “fully closed” position.
2. If it was not possible to charge the designated amount, operate the system in Cooling mode while charging
with refrigerant from the gas tubing side. (This is performed at the time of the test run. For this, all valves
must be in the “fully open” position.)
Charge with R410A refrigerant in liquid form.
With R410A refrigerant, charge while adjusting the amount being fed a little at a time in order to prevent
liquid refrigerant from backing up.
●
After charging is completed, turn all valves to the “fully open” position.
●
Replace the tubing covers as they were before.
1 Tightening torque: 68~82 N·m
Tightening torque for valve stem cap: 19~21 N·m 4
Tightening torque: 34~42 N·m 3
2 Tightening torque for valve stem cap: 28~32 N·m
1. R410A additional charging absolutely must be done through liquid charging.
CAUTION
2. The R410A refrigerant cylinder has a gray base color, and the top part is pink.
3. The R410A refrigerant cylinder includes a siphon tube. Check that the siphon
tube is present. (This is indicated on the label at the top of the cylinder.)
4. Due to differences in the refrigerant, pressure, and refrigerant oil involved in
installation, it is not possible in some cases to use the same tools for R22 and
for R410A.
2 - 19
Design of Mini Multiset
2. System Design
Example:
L1
L2
LA
LB
Main tube of unit
LC
LN
n
1st branch
Unit distribution tube
2
1
model 22
2
3
model 28
model 56
n–1
model 36 model 45
●
Example of each tubing length
Main tubing
Distribution joint tubing
LA = 40 m
Indoor side
LB = 5 m
1=5m
4=6m
LC = 5 m
2=5m
5=5m
LD = 15 m
=
2
m
3
●
Obtain charge amount for each tubing size
Note that the charge amounts per 1 meter are different for each liquid tubing size.
ø9.52 → LA + LB + LC + LD
: 65 m × 0.056 kg/m = 3.64 kg
ø6.35 →
1 + 2 + 3 + 4 + 5 : 23 m × 0.026 kg/m = 0.598 kg
Total
4.238 kg
Additional refrigerant charge amount is 4.238 kg.
CAUTION
Be sure to check the limit density for the room in which the
indoor unit is installed.
Checking of limit density
m3
108.0
94.5
40
m2
67.5
54.0
40.5
27.0
13.5
<Determination by calculation>
0
Overall refrigerant charge amount for the air conditioner: kg
(Minimum room volume for indoor unit: m3)
= 4.238 (kg) + 3.5 (kg) = 0.39 (kg/m3) ≥ 0.3 (kg/m3)
20.06 (m3)
Therefore, openings such as louvers are required for
this room.
2 - 20
Min. indoor floor area
81.0
(when the ceiling is 2.7 m high)
Density limit is determined on the basis of the size of a
room using an indoor unit of minimum capacity. For
instance, when an indoor unit is used in a room (floor
area 7.43 m2 × ceiling height 2.7 m = room volume
20.06 m3), the graph at right shows that the minimum
room volume should be 14.1 m3 (floor area 5.2 m2) for
refrigerant of 4.238 kg. Accordingly, openings such as
louvers are required for this room.
35
30
25
20
15
10
5
0
Range below the
density limit
of 0.3 kg/m3
(countermeasures
not needed)
Range above
the density limit
of 0.3 kg/m3
(countermeasures
needed)
10
20
30
Total amount of refrigerant
kg
Design of Mini Multiset
2. System Design
2-13. Installing Distribution Joint
Tube branching methods (horizontal use)
15
to
30
°
(1) Refer to “HOW TO ATTACH DISTRIBUTION
JOINT” enclosed with the optional distribution
joint kit (DDVI 16).
(2) In order to prevent accumulation of refrigerant oil in
stopped units, if the main tubing is horizontal then
each branch tubing length should be at an angle
that is greater than horizontal. If the main tubing is
vertical, provide a raised starting portion for each
branch.
B
Horizontal A
line
View as seen
from arrow
A
B
Arrow view
Types of vertical trap specifications
(3) If there are height differences between indoor units
or if branch tubing that follows a distribution joint is
connected to only 1 unit, a trap or ball valve must
be added to that distribution joint. (When adding
the ball valve, locate it within 40 cm of the distribution joint.)
(Consult with ARGO separately concerning the
ball valve.)
If a trap or ball valve is not added, do not operate
the system before repairs to a malfunctioning
unit are completed. (The refrigerant oil sent
through the tubing to the malfunctioning unit will
accumulate and may damage the compressor.)
(When using ball valve)
Main tubing
Ball valve
(BV: purchased
separately)
Indoor unit (more than 2 units)
(If only 1 unit is connected, a ball
valve is also needed on this side.)
Indoor unit (1)
(When not using ball valve)
Main tubing
Horizontal
Indoor unit (Each unit is
connected to tubing
Branch tubing is
that is either level or
directed upward.
is directed
More than
downward.)
20 cm
Indoor unit is directed downward
2 - 21
2
Design of Mini Multiset
2. System Design
2-14. Optional Distribution Joint Kit
See the installation instructions packaged with the distribution joint kit for the installation procedure.
Table 2-11
Model name
Cooling capacity after distribution
DDVI 16
Remarks
22.4 kW or less
For indoor unit
DDVI 16
Use: For indoor unit (Capacity after distribution joint is 22.4 kW or less.)
Example: (F below indicates inner diameter. F below indicates outer diameter.)
Gas tube
210
55
F
F F
H
F GH
HG
103
• When creating a tube of diameter G,
use a tube cutter and cut between F
and H. Cut at a point as close to H
as possible.
Liquid tube
50
185
H
IJ
JI
F
F
145
H
G
H
135
83
2
I
J
Insulator
Insulator
Table 2-12 Dimension for Connections of Each Part
Unit: mm
Position
A
B
C
D
E
F
G
H
I
J
Dimension
–
–
–
–
–
ø19.05
ø15.88
ø12.7
ø9.52
ø6.35
2-15. Optional Ball Valve Kit (N.A.)
Table 2-13
Valve connecting tube size (mm)
Model No.
Gas tube
Liquid tube
Indoor unit where used
Total capacity of indoor units
after the valve
BV-RXP160AG
15.88
9.52
16.0 kW or less
BV-RXP56AG
12.7
6.35
5.6 kW or less
NOTE
1. Because the diameter of this ball valve is approximately the same as the inner diameter of the connecting copper tube, correction for pressure loss is not necessary.
2. Airtightness must be 3.6 MPa or more.
It is recommended that the ball valve is installed at each outdoor unit (gas tube and liquid tube), in order to
prevent refrigerant from being released into the atmosphere if the outdoor unit is eventually replaced.
2 - 22
Design of Mini Multiset
2. System Design
Dimensions
Unit: mm
Figure
Type with flare nut at each end
Size
ø6.35 (1/4")
ø9.52 (3/8")
ø12.7 (1/2")
ø15.88 (5/8")
E
A
Dimensions
B
42
42
42
51
C
54
54
58
68
D
16
16
20
22
E
44
44
51
56
C
D
A
72
76
89
108
Insulator
(divided in 2)
Service port
30˚
Note: Install the service port so that it faces the extension side.
2
Ball Valve Installation (for refrigerant R410A only)
Check the size of the ball valve set you separately purchased.
Model name
Size
BV-RXP56AG
ø6.35 • ø12.7
BV-RXP160AG
ø9.52 • ø15.88
1. Installing the ball valve
(1) If the ball valve is to be installed for indoor unit
extension, or near an indoor unit, install it so that
the service port faces the indoor unit side.
(This facilitates indoor unit leak testing and vacuum procedures.)
Install the ball valve as close as possible to the
distribution joint.
Outdoor unit
Indoor
CAUTION
This ball valve is for use
only in systems that utilize
refrigerant R410A. The service port connection size is
ø7.94. The face-to-face distance between the ø12.7 or
ø15.88 flare nuts is 26 mm
or 29 mm, respectively.
Be sure to use only the
supplied flare nuts. Be
careful to use the correct
tools and materials.
Outdoor
Ball valve
Service
port
Indoor unit
Indoor unit extension
2. Flare nut tightening
The flare nut on the service port side is fully tightened. Recommended tightening torque is
(8~10 N·m).
Valve cap
Tightening torque (19~21 N•m)
Fully tightened (this side only)
If the valve is used for extension, it can be used
as-is. In all other cases, use 2 monkey wrenches
in combination to loosen the flare nut.
Service port
Plug
Tightening torque
(8~10 N•m)
(this side only)
2 - 23
Design of Mini Multiset
2. System Design
3. Opening and closing the valve
This valve is open at the time of shipment from the
factory. If the valve is used for extension, be sure
to close it.
Valve opened
Valve closed
Spindle
2
Spindle
4. Installing thermal insulation
The thermal insulation used for a flare-nut type
valve is in the form of a bag. When the valve is
used for extension, it can be used as-is. If the
valve is used for any other purpose, use a box
cutter or similar tool to cut away the part shown in
the figure at right.
The insulation is divided into 2 parts. After performing the leak test, use vinyl tape or other
means to temporarily fasten the 2 parts together.
Then carry out final finishing.
Notch
Insulator
2-14. Recommended Location of Ball Valves
●
Select a valve location that allows service to be easily provided for each unit or each refrigerant system.
(1) When adding ball valve for indoor unit
Outdoor unit
Distribution joint
Distribution tube
Main tube
Main tube
Distribution tube
Ball valve (for extension)
Ball valve (for extension)
Less than 40 cm
Indoor unit for extension
Indoor unit for extension
1. Location: Install the ball valve at the distribution tube (not main tube).
2. Installation requirements
• Be sure to install the ball valve up-grade to prevent the inadvertent flow of oil.
• Install the ball valve at the shortest distance (within 40 cm) from the main tube. If the diameter of the ball valve
is smaller than that of the main tube, use a reducer or the like to reduce the size of the tubing at that location.
• Select a place where it is easy to operate, using careful consideration of the location in advance.
2 - 24
Design of Mini Multiset
3. Installation Instructions
3-2. Outdoor Unit
Exhaust fan
AVOID:
●
heat sources, exhaust fans, etc. (Fig. 2-6)
●
damp, humid or uneven locations
Hot air
Heat source
Outdoor
unit
DO:
2
●
choose a place as cool as possible.
●
choose a place that is well ventilated and outside air temperature
does not exceed maximum 45°C constantly.
●
allow enough room around the unit for air intake/
exhaust and possible maintenance. (Fig. 2-7)
●
use lug bolts or equal to bolt down unit, reducing vibration and noise.
Fig. 2-6
Installation space
Distance between obstructions and the unit air inlet and outlet must be
as shown below.
(Obstruction above unit)
Air direction chamber
*3
(field supply)
Inlet side C
B
More than 1 cm
More than 1 cm
A
*2
*4
Outlet side
More than
100 cm
Inlet side
More than 20 cm
*1
(Obstruction on
inlet side)
*1
Fig. 2-7
(Ground)
Fig. 2-8
●
Concerning inlet-side distance “C” (Fig. 2-7)
The minimum for distance “C” is 15 cm if there are no obstructions on the outlet side
(wall *1 side) and *2 or *4 is not present. In all other cases, the minimum for distance
“C” is 20 cm.
●
If the unit is installed with the outlet side facing wall *1, then there must be no obstructions on 2 of the remaining 3 sides: *2, *3, *4.
●
If wall *1 is on the outlet side (Fig. 2-7), or if obstructions are present on all 3 sides *2,
*3, and *4 (Fig. 2-7), then the minimum distance for “A” and “B” is 2 m (Fig. 2-9). Even
if there is no wall on the outlet side, a minimum of 100 cm is required.
CAUTION
In case of multiple installations
●
provide a solid base (concrete block, 10 × 40 cm
beams or equal), a minimum of 15 cm above
ground level to reduce humidity and protect the unit
against possible water damage and decreased service life. (Fig. 2-9)
●
use lug bolts or equal to bolt down unit, reducing
vibration and noise.
Anchor bolts
(4 pieces)
Fig. 2-9
2 - 25
Design of Mini Multiset
3. Installation Instructions
3-3. Air Discharge Chamber for Top Discharge
Be sure to install an air discharge chamber in the
field when:
●
it is difficult to keep a space of min. 50 cm between
the air discharge outlet and an obstacle.
●
the air discharge outlet is facing a sidewalk and
discharged hot air may annoy passers-by.
Refer to Fig. 2-10.
Air discharge
3-4. Installing the Unit in Heavy Snow Areas
In locations with strong wind, snow-proof ducting
should be fitted and direct exposure to the wind
should be avoided as much as possible.
2
Fig. 2-10
■ Countermeasures against snow and wind
In regions with snow and strong wind, the following
problems may occur when the outdoor unit is not provided with a platform and snow-proof ducting:
In regions with significant snowfall, the outdoor unit should
be provided with a platform and snow-proof duct.
a) The outdoor fan may not run and damage to the
unit may occur.
b) There may be no air flow.
c) The tubing may freeze and burst.
d) The condenser pressure may drop because of
strong wind, and the indoor unit may freeze.
3-5. Precautions for Installation in Heavy Snow
Areas
(1) The platform should be higher than the max. snow
depth. (Fig. 2-11)
Without snowproof ducting
(Low platform)
(2) The 2 anchoring feet of the outdoor unit should be
used for the platform, and the platform should be
installed beneath the air intake side of outdoor
unit.
With snowproof ducting
(High platform)
Fig. 2-11
(3) The platform foundation must be firm and the unit
must be secured with anchor bolts.
Outdoor
Unit
(4) In case of installation on a roof subject to strong
wind, countermeasures must be taken to prevent
the unit from being blown over.
Duct
Air
intake
Fig. 2-12
2 - 26
Design of Mini Multiset
3. Installation Instructions
1
Unit front, air discharge chamber
2
Unit left side, air discharge chamber
3
Unit light side, air discharge chamber
4
Reinforcement brackets, 4 locations
29.5
300
3-6. Dimensions of Air-Discharge Chamber
Reference diagram for air-discharge chamber (field supply)
***A for AES 04-05-06 MMIH
2
240
3
4
240
29.5
2
Rectangular
hole
1090
537
70
310
997
70
250
537
Rectangular
hole
317
250
35
35
1
Rectangular
hole
250
317
Rectangular
hole
Unit: mm
569
544
25
25
Wind direction
110
13
340
380
Win
dire d
ctio
n
405
660
13
20
170
10
3-7. Dimensions of Outdoor Unit with Air-Discharge Chamber (field supply)
AES 04-05-06 MMIH with ***
15
300
108
68
20
300
13
544
Wind direction
940
Wind
direction
Wind
direction
18
1230
Wind
direction
997
Wind direction
Wind
direction
Unit: mm
2 - 27
Design of Mini Multiset
3. Installation Instructions
Reference for air-discharge chamber (field supply)
Required space around outdoor unit
AES 04-05-06 MMIH) with ***
If an air discharge chamber is used, the space shown below must be secured around the outdoor unit.
If the unit is used without the required space, a protective device may activate, preventing the unit from operating.
Min. 200
Min. 1000
(1) Single-unit installation
2
Unit: mm
CAUTION
The top and both sides must remain open.
If there are obstacles to the front and rear of the outdoor unit,
the obstacle at either the front or rear must be no taller than the
height of the outdoor unit.
(2) Multiple-unit installation
More than 300
More than 300
More than 400
Installation in lateral rows (side-by-side)
More than 200
CAUTION
Unit: mm
The front and top must remain open.
The obstacles must be no taller than the height of the outdoor unit.
Installation in front-rear rows
Installation with intakes facing
intakes or outlets facing outlets
Installation with intakes facing outlets
More than 400
More than 2000
More than 1500
Unit: mm
CAUTION
The front and both sides must remain open.
2 - 28
Design of Mini Multiset
3. Installation Instructions
3-8. Dimensions of Snow Ducting
Reference diagram for snow-proof vents (field supply)
*** for AES 04-05-06 MMIH
Fastened by screws at 13 locations
1
Unit top, snow-proof vent
2
Unit left side
3
Unit right side
4
Unit reverse side
5
Unit reverse side
6
Unit sides, reinforcement brackets for snow-proof vent
764
4
1
Unit: mm
645
302
500
732
732
500
Fastened by screw at
1 location (also on reverse side)
ole
rh
cho le)
n
a
o
it
Un ø 7 h
–
(7
41
388
1209
500
1209
Fastened by screws at
3 locations (also on reverse side)
16
46
730
778
3-9. Dimensions of Outdoor Unit with Snow-Proof Vents (field supply)
AES 04-05-06 MMIH with ***
20
10
15
380
405
645
20
764
179
Wind direction Wind direction
Wind direction
Wind direction
Unit: mm
940
632
1209
732
302
Wind direction
1230
2
101
450
233
150
95
233
444
338
3
20
2
Wind direction
2 - 29
Design of Mini Multiset
3. Installation Instructions
Reference diagram for snow-proof vents – 1
Space requirements for setting – (1)
AES 04-05-06 MMIH with ***
[Obstacle to the front of unit]
[Obstacle to the rear of unit]
● Top is open:
(1) Single-unit installation
2
Min. D
Min. A
Min. H
● Top is open:
(1) Single-unit installation (2) Obstacles on both sides
Min. B
(2) Multiple-unit installation (2 or more units)
Min. C
Min. I
Min. G
Min. I
Min. J
(3) Multiple-unit installation (2 or more units)
Outdoor unit
Min. E
Min. E
H
500
AES 04-05-06 MMIH
Min. E
I
J
300 1000
Min. F
A
B
C
D
E
F
G
150
150
300
200
300
150
200
Note: In cases 2 and 3 the height of the obstacle
must be no taller than the height of the outdoor
unit.
● Top is blocked by an obstacle:
● Top is blocked by an obstacle:
Min. M
Min. N
Outdoor unit
AES 04-05-06 MMIH
Min. K
Min. L
Outdoor unit
AES 04-05-06 MMIH 500
K
Outdoor unit
AES 04-05-06 MMIH000 1000
L
M
N
150
Unit: mm
2 - 30
Design of Mini Multiset
3. Installation Instructions
Reference diagram for snow-proof vents – 2
Space requirements for setting – (2)
AES 04-05-06 MMIH with ***
[Obstacles to the front and rear of unit]
• The top and both sides must remain open. Either the obstacle to the front or
the obstacle to the rear must be no taller than the height of the outdoor unit.
Min. O
2
Q
Min. P
(1) Single-unit installation
Dimension Q
If a snow protection duct is attached after the unit is
installed, verify that dimension Q is 500 mm or more.
Outdoor unit
AES 04-05-06 MMIH
O
P
1000 150
Min. 300
Q
Min. 200
Min. 1000
(2) Obstacles on both sides
Min. 300
[Installation in front-rear rows]
• The top and both sides must remain open. Either the obstacle to the front or the obstacle
to the rear must be no taller than the height of the outdoor unit.
0
Min. 300
Min. 1000
Min. 1500
Min. 200
Min. 2000
Dimension Q
If a snow protection duct is
attached after the unit is
installed, verify that dimension
Q is 500 mm or more.
Unit: mm
2 - 31
Design of Mini Multiset
3. Installation Instructions
3-10. Installing the Outdoor Unit
●
Ordinarily, ensure a base height of 5 cm or more. If a
drain pipe is used, or for use in cold-weather regions,
ensure a height of 15 cm or more at the feet on both
sides of the unit.
(In this case, leave clearance below the unit for the
drain pipe, and to prevent freezing of drainage water
in cold-weather regions.)
●
Refer to the Fig. 3-1 for the anchor bolt dimensions.
●
Be sure to anchor the feet with the anchor bolts
(M10). In addition, use anchoring washers on the top
side. (Use large square 32 × 32 SUS washers with
JIS nominal diameters of 10.) (Field supply)
Drain port (2 locations)
171
660
219 150
13
13
2
341
296
380
405
13
111
20
10
Use concrete or a similar material to create the base,
and ensure good drainage.
19
15
●
13
942
3-11. Drainage Work
Follow the procedure below to ensure adequate draining for the outdoor unit.
●
For the drain port dimensions, refer to the figure at
right.
●
Ensure a base height of 15 cm or more at the feet on
both sides of the unit.
●
When using a drain pipe, install the drain socket
(optional part STK-DS25T) onto the drain port. Seal
the other drain port with the rubber cap supplied with
the drain socket.
●
Anchor bolt (M10)
Drain port
For details, refer to the instruction manual of the
drain socket (optional part ***).
Fig. 3-1
3-12. Routing the Tubing and Wiring
●
●
The tubing and wiring can be extended out in 4 directions: front, rear, right, and down.
The service valves are housed inside the unit. To
access them, remove the inspection panel. (To
remove the inspection panel, remove the 3 screws,
then slide the panel downward and pull it toward you.)
(1) If the routing direction is through the front, rear, or
right, use a nipper or similar tool to cut out the
knockout holes for the inter-unit control wiring outlet,
power wiring outlet, and tubing outlet from the
appropriate covers A and B.
(2) If the routing direction is down, use a nipper or similar tool to cut out the lower flange from cover A.
Inter-unit control wiring outlet
Inspection panel
Rear
Cover B
Cover A
Front
Down
Tubing outlet
Fig. 3-2
●
Route the tubing so that it does not contact the compressor, panel, or other parts inside the unit. Increased
noise will result if the tubing contacts these parts.
●
When routing the tubing, use a tube bender to bend the
tubes.
CAUTION
2 - 32
Right
Power wiring outlet
Design of Mini Multiset
4. Electrical Wiring
4-1. General Precautions on Wiring
(1) Before wiring, confirm the rated voltage of the unit
as shown on its nameplate, then carry out the
wiring closely following the wiring diagram.
(7) Regulations on wire diameters differ from locality
to locality. For field wiring rules, please refer to
your LOCAL ELECTRICAL CODES before beginning.
(2) Provide a power outlet to be used exclusively for
each unit, and a power supply disconnect and circuit breaker for overcurrent protection should be
provided in the exclusive line.
You must ensure that installation complies with all
relevant rules and regulations.
(8) To prevent malfunction of the air conditioner
caused by electrical noise, care must be taken
when wiring as follows:
(3) To prevent possible hazards from insulation failure, the unit must be grounded.
2
(4) Each wiring connection must be done in accordance with the wiring system diagram. Wrong
wiring may cause the unit to misoperate or
become damaged.
(5) Do not allow wiring to touch the refrigerant tubing,
compressor, or any moving parts of the fan.
●
The remote control wiring and the inter-unit control
wiring should be wired apart from the inter-unit
power wiring.
●
Use shielded wires for inter-unit control wiring
between units and ground the shield on both sides.
(9) If the power supply cord of this appliance is damaged, it must be replaced by a repair shop
appointed by the manufacturer, because special
purpose tools are required.
(6) Unauthorized changes in the internal wiring can be
very dangerous. The manufacturer will accept no
responsibility for any damage or misoperation that
occurs as a result of such unauthorized changes.
4-2. Recommended Wire Length and Wire Diameter for Power Supply System
Outdoor unit
(A) Power supply
Wire size
4 mm 2
6 mm 2
6 mm 2
AES 04 MMIH
AES 05 MMIH
AES 06 MMIH
Time delay fuse or
Max. length circuit capacity
16 m
25 A
24 m
35 A
20 m
35 A
Indoor unit
Type
(B) Power supply Time delay fuse or
circuit capacity
2.5 mm2
AWS
ASS-ACS-FC-SD
ADS
Max. 150 m
10 ~ 16A
Max. 130 m
10 ~ 16A
Max. 60 m
10 ~ 16A
Control wiring
(C) Inter-unit (between outdoor and
indoor units) control wiring
(D) Remote control wiring
(E) Control wiring for group control
0.75 mm 2 (AWG #18)
Use shielded wiring*
0.75 mm 2 (AWG #18)
Use shielded wiring
0.75 mm2 (AWG #18)
Use shielded wiring
Max. 1,000 m
Max. 500 m
Max. 500 m (Total)
NOTE
* With ring-type wire terminal.
2 - 33
Design of Mini Multiset
4. Electrical Wiring
4-3. Wiring System Diagram
Indoor
unit (No. 1)
L
Power supply
220-240V 50Hz N
Outdoor unit
INV unit
1
3
Ground
Remote
controller
WHT 1
BLK 2
B
Power supply
220–240V-1N
50Hz
Ground
1
2
U2
D
L
N
C
U1
Ground
1
1
2
A
L
N
2
2
Ground
C
Indoor
unit (No. 2)
L
Power supply
220-240V 50Hz N
1
2
2
3
Ground
Remote
controller
WHT 1
BLK 2
B
U1
U2
D
1
1
2
2
Ground
C
Indoor
unit (No. 3)
Group control:
L
Power supply
220-240V 50Hz N
1
2
3
Ground
B
E
U1
U2
1
2
Ground
C
Indoor
unit (No. n)
L
Power supply
220-240V 50Hz N
1
2
3
Ground
Remote
controller
WHT 1
BLK 2
B
U1
U2
D
7P terminal board
1
1
2
2
Ground
NOTE
(1) Refer to Section 4-2. “Recommended Wire Length
and Wire Diameter for Power Supply System” for the
explanation of “A,” “B,” “C,” “D,” and “E,” in the above
diagram.
-- Type
(2) The basic connection diagram of the indoor unit
shows the 7P terminal board, so the terminal boards
in your equipment may differ from the diagram.
(3) Refrigerant Circuit (R.C.) address should be set
before turning the power on.
8P terminal board
1
(4) Regarding the R.C. address setting, refer to page 40
of the Installation Instructions. Auto. address setting
can be executed by remote controller automatically.
Refer to page 41~45 of the Installation Instructions.
2 - 34
U1 U2 R1 R2
Remote
Inter-unit
control wiring controller
1(L) 2(N)
Power
supply
2
U1
1(L)2(N)
Power
supply
U2
R1
5P terminal board
R2
R1 R2
Remote
controller
U1 U2
Inter-unit
control wiring
FC-ADS-SD-ASS-ACS
1
2
3
4
5
1(L)2(N) 4 5
Power
Inter-unit
supply control wiring
AWS Type
Design of Mini Multiset
CAUTION
(1) When linking outdoor units in a network (S-net link system), disconnect the terminal extended from the
short plug (CN003, 2P Black, location: right bottom on the outdoor main control PCB) from all outdoor
units except any one of the outdoor units.
(When shipping: In shorted condition.)
Otherwise the communication of S-net link system is not performed. For a system without link (no connection wiring between outdoor units), do not remove the short plug.
(2) Do not install the inter-unit control wiring in a way that forms a loop. (Fig. 4-1)
2
Outdoor unit
Outdoor unit
Outdoor unit
Prohibited
Prohibited
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Fig. 4-1
(3) Do not install inter-unit control wiring such as star
branch wiring. Star branch wiring causes mis-address
setting.
Outdoor unit
NO
Outdoor unit
NO
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Branch point
Fig. 4-2
(4) If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.
(Branches less than 1 m are not included in the total branch number.) (Fig. 4-3)
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
more than 1 m
Branch
point
16 or fewer
Indoor unit
Indoor unit
more than 1 m
Indoor unit
less than 1 m
Indoor unit
Fig. 4-3
2 - 35
Design of Mini Multiset
(5) Use shielded wires for inter-unit control wiring
(c) and ground the shield on both sides, otherwise misoperation from noise may occur.
(Fig. 4-4)
Connect wiring as shown in Section “4-3.
Wiring System Diagram.”
WARNING
Shielded wire
Ground
Loose wiring may cause
the terminal to overheat or
result in unit malfunction.
A fire hazard may also
exist. Therefore, ensure
that all wiring is tightly
connected.
Ground
Fig. 4-4
2
When connecting each power wire to the terminal,
follow the instructions on “How to connect wiring to
the terminal” and fasten the wire securely with the fixing screw of the terminal plate.
How to connect wiring to the terminal
■ For stranded wiring
Stranded wire
Strip 10 mm
(1) Cut the wire end with cutting pliers, then strip the
insulation to expose the stranded wiring about 10
mm and tightly twist the wire ends. (Fig. 4-5)
(2) Using a Phillips head screwdriver, remove the terminal screw(s) on the terminal plate.
Ring
pressure
terminal
(3) Using a ring connector fastener or pliers, securely
clamp each stripped wire end with a ring pressure
terminal.
Fig. 4-5
(4) Place the ring pressure terminal, and replace and
tighten the removed terminal screw using a screwdriver. (Fig. 4-6)
Special
washer
Screw
Ring pressure
terminal
Wire
Screw and
Special washer
Terminal plate
Ring
pressure
terminal
Wire
Fig. 4-6
2 - 36
Mini Multiset Unit Specifications
Contents
3. Mini Multiset unit specifications
1. Outdoor Unit
1-1.
1-2.
1-3.
1-4.
1-5.
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-3
Major Component Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-9
Dimensional Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-15
Refrigerant Flow Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-16
Sound Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-17
3
3-1
Mini Multiset Unit Specifications
1. Outdoor Unit
1-1. Specifications
Unit specifications (A)
MODEL No.
Outdoor Unit
AES 04 MMIH
POWER SOURCE
220 - 230 - 240 V / Single-phase / 50 / 60 Hz
PERFORMANCE
Capacity
kW
BTU / h
Cooling
Heating
11.2
12.5
38,200
42,700
3
Air circulation (Hi)
m /min (cu.ft/min)
100 (3,530)
ELECTRICAL RATINGS
Voltage rating
V
Available voltage range
V
Running amperes
A
14.8
14.1
13.5
Max. running amperes*
A
24.0
24.0
Power input
kW
2.76
Max. power input*
kW
%
Power factor
COP
W/W
Max. starting amperes
A
230
240
15.4
14.7
14.1
24.0
–
–
–
2.76
2.76
2.88
2.88
2.88
4.90
4.90
4.90
–
–
–
85
85
85
85
85
85
4.06
4.06
4.06
4.34
4.34
4.34
230
220
240
220
198 – 264
Approx. 1 Approx. 1 Approx. 1 Approx. 1 Approx. 1 Approx. 1
FEATURES
Controls
Microprocessor
Defrost control
Reverse cycle, microprocessor control
Sensor temp. recall function
Past service warnings recall function
Service function
Refrigerant amount at shipment
kg
R410A - 3.5
Refrigerant control
Operation sound (Hi)
Electronic expansion valve
Power level
67
dB-A
51
Pressure level
External finish
Galvanized steel plate with powder paint
Color (Approximate value)
Munsell 1Y 8.5 / 0.5
REFRIGERANT TUBING
Limit of tubing length
m (ft.)
150 (492)
Limit of elevation difference
between the 2 units
m (ft.)
Outdoor unit is higher than indoor unit: 50 (164)
Outdoor unit is lower than indoor unit: 40 (131)
Refrigerant tube
outer diameter
Liquid tube mm (in.)
Gas tube
9.52 (3/8)
mm (in.)
15.88 (5/8)
Refrigerant tubing kit / Joint kit
Optional
DIMENSIONS & WEIGHT
Unit dimensions
Unit dimensions
Package dimensions
1230 (48-7/16)
1331 (52-13/32)
Height
mm (in.)
Width
mm (in.)
940 (37)
Depth
mm (in.)
340 (13-13/32)
1016 (40)
415 (16-11/32)
Net weight
kg (lbs.)
104 (229)
Shipping weight
kg (lbs.)
112 (247)
Shipping volume
3
m (cu. ft)
0.56 (19.8)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Rated conditions
Cooling: Indoor air temperature 27°C DB / 19°C WB; Outdoor air temperature 35°C DB
Heating: Indoor air temperature 20°C DB; Outdoor air temperature 7°C DB / 6°C WB
*Full-load conditions at Indoor / Outdoor capacity ratio 100%
Cooling: Indoor air temperature 32°C DB / 23°C WB; Outdoor air temperature 43°C DB / 26°C WB
3-3
3
Mini Multiset Unit Specifications
1. Outdoor Unit
Unit specifications (B)
MODEL No.
Outdoor Unit
AES 05 MMIH
POWER SOURCE
220 - 230 - 240 V / Single-phase / 50 / 60 Hz
PERFORMANCE
Capacity
kW
BTU / h
Cooling
Heating
14.0
16.0
47,800
54,600
3
Air circulation (Hi)
m /min (cu.ft/min)
100 (3,530)
ELECTRICAL RATINGS
Voltage rating
V
Available voltage range
V
Running amperes
A
20.5
19.6
18.8
Max. running amperes*
A
24.0
24.0
24.0
Power input
kW
3.83
3.83
Max. power input*
kW
4.90
%
Power factor
COP
W/W
Max. starting amperes
A
230
240
20.8
19.9
19.1
–
–
–
3.83
3.90
3.90
3.90
4.90
4.90
–
–
–
85
85
85
85
85
85
3.66
3.66
3.66
4.10
4.10
4.10
230
220
240
220
198 – 264
Approx. 1 Approx. 1 Approx. 1 Approx. 1 Approx. 1 Approx. 1
FEATURES
Controls
Microprocessor
Defrost control
3
Reverse cycle, microprocessor control
Sensor temp. recall function
Past service warnings recall function
Service function
Refrigerant amount at shipment
kg
R410A - 3.5
Refrigerant control
Operation sound (Hi)
Electronic expansion valve
Power level
67
dB-A
51
Pressure level
External finish
Galvanized steel plate with powder paint
Color (Approximate value)
Munsell 1Y 8.5 / 0.5
REFRIGERANT TUBING
Limit of tubing length
m (ft.)
150 (492)
Limit of elevation difference
between the 2 units
m (ft.)
Outdoor unit is higher than indoor unit: 50 (164)
Outdoor unit is lower than indoor unit: 40 (131)
Refrigerant tube
outer diameter
Liquid tube mm (in.)
Gas tube
9.52 (3/8)
mm (in.)
15.88 (5/8)
Refrigerant tubing kit / Joint kit
Optional
DIMENSIONS & WEIGHT
Unit dimensions
Unit dimensions
Package dimensions
1230 (48-7/16)
1331 (52-13/32)
Height
mm (in.)
Width
mm (in.)
940 (37)
Depth
mm (in.)
340 (13-13/32)
1016 (40)
415 (16-11/32)
Net weight
kg (lbs.)
104 (229)
Shipping weight
kg (lbs.)
112 (247)
Shipping volume
3
m (cu. ft)
0.56 (19.8)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Rated conditions
Cooling: Indoor air temperature 27°C DB / 19°C WB; Outdoor air temperature 35°C DB
Heating: Indoor air temperature 20°C DB; Outdoor air temperature 7°C DB / 6°C WB
*Full-load conditions at Indoor / Outdoor capacity ratio 100%
Cooling: Indoor air temperature 32°C DB / 23°C WB; Outdoor air temperature 43°C DB / 26°C WB
3- 4
Mini Multiset Unit Specifications
1. Outdoor Unit
Unit specifications (C)
MODEL No.
Outdoor Unit
AES 06 MMIH
POWER SOURCE
220 - 230 - 240 V / Single-phase / 50 / 60 Hz
PERFORMANCE
Cooling
Capacity
kW
BTU / h
Heating
15.5
17.6
52,900
60,000
m3/min (cu.ft/min)
Air circulation (Hi)
100 (3,530)
ELECTRICAL RATINGS
Voltage rating
V
Available voltage range
V
Running amperes
A
24.4
23.4
22.4
Max. running amperes*
A
28.0
28.0
Power input
kW
4.57
Max. power input*
kW
%
Power factor
COP
W/W
Max. starting amperes
A
230
240
24.5
23.4
22.5
28.0
–
–
–
4.57
4.57
4.58
4.58
4.58
5.72
5.72
5.72
–
–
–
85
85
85
85
85
85
3.39
3.39
3.39
3.84
3.84
3.84
230
220
240
220
198 – 264
Approx. 1 Approx. 1 Approx. 1 Approx. 1 Approx. 1 Approx. 1
FEATURES
Controls
Microprocessor
Defrost control
Reverse cycle, microprocessor control
Sensor temp. recall function
Past service warnings recall function
Service function
Refrigerant amount at shipment
kg
R410A - 3.5
Refrigerant control
Operation sound (Hi)
Electronic expansion valve
Power level
68
dB-A
52
Pressure level
External finish
Galvanized steel plate with powder paint
Color (Approximate value)
Munsell 1Y 8.5 / 0.5
REFRIGERANT TUBING
Limit of tubing length
m (ft.)
150 (492)
Limit of elevation difference
between the 2 units
m (ft.)
Outdoor unit is higher than indoor unit: 50 (164)
Outdoor unit is lower than indoor unit: 40 (131)
Refrigerant tube
outer diameter
Liquid tube mm (in.)
Gas tube
9.52 (3/8)
mm (in.)
19.05 (3/4)
Refrigerant tubing kit / Joint kit
Optional
DIMENSIONS & WEIGHT
Unit dimensions
Unit dimensions
Package dimensions
1230 (48-7/16)
1331 (52-13/32)
Height
mm (in.)
Width
mm (in.)
940 (37)
Depth
mm (in.)
340 (13-13/32)
1016 (40)
415 (16-11/32)
Net weight
kg (lbs.)
104 (229)
Shipping weight
kg (lbs.)
112 (247)
Shipping volume
3
m (cu. ft)
0.56 (19.8)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Rated conditions
Cooling: Indoor air temperature 27°C DB / 19°C WB; Outdoor air temperature 35°C DB
Heating: Indoor air temperature 20°C DB; Outdoor air temperature 7°C DB / 6°C WB
*Full-load conditions at Indoor / Outdoor capacity ratio 100%
Cooling: Indoor air temperature 32°C DB / 23°C WB; Outdoor air temperature 43°C DB / 26°C WB
3-5
3
Mini Multiset Unit Specifications
1. Outdoor Unit
Unit specifications (D)
MODEL No.
Outdoor Unit
AES 04 MMIH
POWER SOURCE
220 - 230 - 240 V / Single-phase / 50 / 60 Hz
PERFORMANCE
Cooling
Capacity
11.2
kW
BTU / h
38,200
3
Air circulation (Hi)
m /min (cu.ft/min)
100 (3,530)
ELECTRICAL RATINGS
Voltage rating
V
Available voltage range
V
Running amperes
A
14.8
14.1
13.5
Max. running amperes*
A
24.0
24.0
24.0
Power input
kW
2.76
2.76
2.76
Max. power input*
kW
4.90
4.90
4.90
%
85
85
85
4.06
4.06
4.06
Approx. 1
Approx. 1
Approx. 1
Power factor
COP
240
198 – 264
W/W
Max. starting amperes
230
220
A
FEATURES
Controls
Microprocessor
Sensor temp. recall function
Past service warnings recall function
Service function
3
Refrigerant amount at shipment
kg
R410A - 3.5
Refrigerant control
Operation sound (Hi)
Electronic expansion valve
Power level
67
dB-A
51
Pressure level
External finish
Galvanized steel plate with powder paint
Color (Approximate value)
Munsell 1Y 8.5 / 0.5
REFRIGERANT TUBING
Limit of tubing length
m (ft.)
150 (492)
Limit of elevation difference
between the 2 units
m (ft.)
Outdoor unit is higher than indoor unit: 50 (164)
Outdoor unit is lower than indoor unit: 40 (131)
Refrigerant tube
outer diameter
Liquid tube mm (in.)
Gas tube
9.52 (3/8)
mm (in.)
15.88 (5/8)
Refrigerant tubing kit / Joint kit
Optional
DIMENSIONS & WEIGHT
Unit dimensions
Unit dimensions
Package dimensions
1230 (48-7/16)
1331 (52-13/32)
Height
mm (in.)
Width
mm (in.)
940 (37)
Depth
mm (in.)
340 (13-13/32)
1016 (40)
415 (16-11/32)
Net weight
kg (lbs.)
104 (229)
Shipping weight
kg (lbs.)
112 (247)
Shipping volume
3
m (cu. ft)
0.56 (19.8)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Rated conditions
Cooling: Indoor air temperature 27°C DB / 19°C WB; Outdoor air temperature 35°C DB
*Full-load conditions at Indoor / Outdoor capacity ratio 100%
Cooling: Indoor air temperature 32°C DB / 23°C WB; Outdoor air temperature 43°C DB / 26°C WB
3-6
Mini Multiset Unit Specifications
1. Outdoor Unit
Unit specifications (E)
MODEL No.
Outdoor Unit
AES 05 MMIH
POWER SOURCE
220 - 230 - 240 V / Single-phase / 50 / 60 Hz
PERFORMANCE
Cooling
Capacity
14.0
kW
BTU / h
47,800
m3/min (cu.ft/min)
Air circulation (Hi)
100 (3,530)
ELECTRICAL RATINGS
Voltage rating
V
Available voltage range
V
Running amperes
Max. running amperes*
220
230
240
A
20.5
19.6
18.8
A
24.0
24.0
24.0
Power input
kW
3.83
3.83
3.83
Max. power input*
kW
4.90
4.90
4.90
%
85
85
85
3.66
3.66
3.66
Approx. 1
Approx. 1
Approx. 1
Power factor
COP
W/W
Max. starting amperes
A
FEATURES
Controls
Microprocessor
Sensor temp. recall function
Past service warnings recall function
Service function
Refrigerant amount at shipment
kg
Refrigerant control
Operation sound (Hi)
3
R410A - 3.5
Electronic expansion valve
Power level
67
dB-A
51
Pressure level
External finish
Galvanized steel plate with powder paint
Color (Approximate value)
Munsell 1Y 8.5 / 0.5
REFRIGERANT TUBING
Limit of tubing length
m (ft.)
150 (492)
Limit of elevation difference
between the 2 units
m (ft.)
Outdoor unit is higher than indoor unit: 50 (164)
Outdoor unit is lower than indoor unit: 40 (131)
Refrigerant tube
outer diameter
Liquid tube mm (in.)
Gas tube
9.52 (3/8)
mm (in.)
15.88 (5/8)
Refrigerant tubing kit / Joint kit
Optional
DIMENSIONS & WEIGHT
Unit dimensions
Unit dimensions
Package dimensions
1230 (48-7/16)
1331 (52-13/32)
Height
mm (in.)
Width
mm (in.)
940 (37)
Depth
mm (in.)
340 (13-13/32)
1016 (40)
415 (16-11/32)
Net weight
kg (lbs.)
104 (229)
Shipping weight
kg (lbs.)
112 (247)
Shipping volume
3
m (cu. ft)
0.56 (19.8)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Rated conditions
Cooling: Indoor air temperature 27°C DB / 19°C WB; Outdoor air temperature 35°C DB
*Full-load conditions at Indoor / Outdoor capacity ratio 100%
Cooling: Indoor air temperature 32°C DB / 23°C WB; Outdoor air temperature 43°C DB / 26°C WB
3- 7
Mini Multiset Unit Specifications
1. Outdoor Unit
Unit specifications (F)
MODEL No.
Outdoor Unit
AES 06 MMIH
POWER SOURCE
220 - 230 - 240 V / Single-phase / 50 / 60 Hz
PERFORMANCE
Cooling
Capacity
15.5
kW
BTU / h
52,900
m3/min (cu.ft/min)
Air circulation (Hi)
100 (3,530)
ELECTRICAL RATINGS
Voltage rating
V
Available voltage range
V
Running amperes
A
24.4
23.4
22.4
Max. running amperes*
A
28.0
28.0
28.0
Power input
kW
4.57
4.57
4.57
Max. power input*
kW
5.72
5.72
5.72
%
85
85
85
Power factor
COP
240
198 – 264
W/W
Max. starting amperes
230
220
A
3.39
3.39
3.39
Approx. 1
Approx. 1
Approx. 1
FEATURES
Controls
Microprocessor
Sensor temp. recall function
Past service warnings recall function
Service function
3
Refrigerant amount at shipment
kg
R410A - 3.5
Refrigerant control
Operation sound (Hi)
Electronic expansion valve
Power level
68
dB-A
52
Pressure level
External finish
Galvanized steel plate with powder paint
Color (Approximate value)
Munsell 1Y 8.5 / 0.5
REFRIGERANT TUBING
Limit of tubing length
m (ft.)
150 (492)
Limit of elevation difference
between the 2 units
m (ft.)
Outdoor unit is higher than indoor unit: 50 (164)
Outdoor unit is lower than indoor unit: 40 (131)
Refrigerant tube
outer diameter
Liquid tube mm (in.)
Gas tube
9.52 (3/8)
mm (in.)
19.05 (3/4)
Refrigerant tubing kit / Joint kit
Optional
DIMENSIONS & WEIGHT
Unit dimensions
Unit dimensions
Package dimensions
1230 (48-7/16)
1331 (52-13/32)
Height
mm (in.)
Width
mm (in.)
940 (37)
Depth
mm (in.)
340 (13-13/32)
1016 (40)
415 (16-11/32)
Net weight
kg (lbs.)
104 (229)
Shipping weight
kg (lbs.)
112 (247)
Shipping volume
3
m (cu. ft)
0.56 (19.8)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Rated conditions
Cooling: Indoor air temperature 27°C DB / 19°C WB; Outdoor air temperature 35°C DB
*Full-load conditions at Indoor / Outdoor capacity ratio 100%
Cooling: Indoor air temperature 32°C DB / 23°C WB; Outdoor air temperature 43°C DB / 26°C WB
3-8
Mini Multiset Unit Specifications
1. Outdoor Unit
1-2. Major Component Specifications
Outdoor unit (A)
MODEL No.
AES 04 MMIH
Power source
220 - 230 - 240 V / 1N / 50 Hz
Controller P.C.B. Ass’y
CR-CR365GXH56
Control circuit fuse
250V, 6.3A
Compressor
INV (Inverter)
Type
Rotary (Hermetic)
Model ... Code No.
Motor rated output
Compressor oil (ETHER FV68S)
C-9RVN273H0T ... 808673805
kW
2.1
cc
1,900
Coil resistance
(Ambient temperature 25°C)
V - U: 0.138, U - W: 0.138
W - V: 0.138
Safety devices
Thermal protector ON / OFF
Microprocessor safety devices
Crank case heater
Compressor current detection circuit
Compressor discharge gas temperature control
V, W
240, 25
High pressure switch
Set pressure ON / OFF
MPa
Propeller (1 ... ø460) ⋅ 2
Fan (Number ... diameter (mm))
Fan motor
Model ... Nominal output
W
UGBTEF – 95STS503 / 504 ... 90W
No. of pole ... r.p.m.
8 ... 250 – 800
Safety device
Microprocessor safety devices
Yes
Heat exchanger
Coil
Rows…fin pitch
Face area
Aluminum plate fin / Copper tube
mm
3 … 1.4
m2
3.25
3- 9
3
Mini Multiset Unit Specifications
1. Outdoor Unit
Outdoor unit (B)
MODEL No.
AES 05 MMIH
Power source
220 - 230 - 240 V / 1N / 50 Hz
Controller P.C.B. Ass’y
CR-CR365GXH56
Control circuit fuse
250V, 6.3A
Compressor
INV (Inverter)
Type
Rotary (Hermetic)
Model ... Code No.
Motor rated output
Compressor oil (ETHER FV68S)
C-9RVN273H0T ... 808673805
kW
3.3
cc
1,900
Coil resistance
(Ambient temperature 25°C)
V - U: 0.138, U - W: 0.138
W - V: 0.138
Safety devices
Thermal protector ON / OFF
Microprocessor safety devices
Crank case heater
Compressor current detection circuit
Compressor discharge gas temperature control
V, W
240, 25
High pressure switch
Set pressure ON / OFF
3
MPa
Propeller (1 ... ø460) ⋅ 2
Fan (Number ... diameter (mm))
Fan motor
Model ... Nominal output
W
UGBTEF – 95STS503 / 504 ... 90W
No. of pole ... r.p.m.
8 ... 250 – 800
Safety device
Microprocessor safety devices
Yes
Heat exchanger
Coil
Rows…fin pitch
Face area
Aluminum plate fin / Copper tube
mm
3 … 1.4
m2
3.25
3- 10
Mini Multiset Unit Specifications
1. Outdoor Unit
Outdoor unit (C)
MODEL No.
AES 06 MMIH
Power source
220 - 230 - 240 V / 1N / 50 Hz
Controller P.C.B. Ass’y
CR-CR605GXH56
Control circuit fuse
250V, 6.3A
Compressor
INV (Inverter)
Type
Rotary (Hermetic)
Model ... Code No.
Motor rated output
Compressor oil (ETHER FV68S)
C-9RVN273H0T ... 808673805
kW
4.0
cc
1,900
Coil resistance
(Ambient temperature 25°C)
V - U: 0.138, U - W: 0.138
W - V: 0.138
Safety devices
Thermal protector ON / OFF
Microprocessor safety devices
Crank case heater
Compressor current detection circuit
Compressor discharge gas temperature control
V, W
240, 25
High pressure switch
Set pressure ON / OFF
MPa
Propeller (1 ... ø460) ⋅ 2
Fan (Number ... diameter (mm))
Fan motor
Model ... Nominal output
W
UGBTEF – 95STS503 / 504 ... 90W
No. of pole ... r.p.m.
8 ... 250 – 800
Safety device
Microprocessor safety devices
Yes
Heat exchanger
Coil
Rows…fin pitch
Face area
Aluminum plate fin / Copper tube
mm
3 … 1.4
m2
3.25
3 - 11
3
Mini Multiset Unit Specifications
1. Outdoor Unit
Outdoor unit (D)
MODEL No.
AES 04 MMIH
Power source
220 - 230 - 240 V / 1N / 50 Hz
Controller P.C.B. Ass’y
Compressor
CR-CR365GXH56
INV (Inverter)
Type
Rotary (Hermetic)
Model ... Code No.
Motor rated output
Compressor oil (ETHER FV68S)
C-9RVN273H0T ... 808673805
kW
2.1
cc
1,900
Coil resistance
(Ambient temperature 25°C)
V - U: 0.138, U - W: 0.138
W - V: 0.138
Safety devices
Thermal protector ON / OFF
Microprocessor safety devices
Crank case heater
Compressor current detection circuit
Compressor discharge gas temperature control
V, W
240, 25
High pressure switch
Set pressure ON / OFF
3
MPa
Propeller (1 ... ø460) ⋅ 2
Fan (Number ... diameter (mm))
Fan motor
Model ... Nominal output
W
UGBTEF – 95STS503 / 504 ... 90W
No. of pole ... r.p.m.
8 ... 250 – 800
Safety device
Microprocessor safety devices
Yes
Heat exchanger
Coil
Rows…fin pitch
Face area
Aluminum plate fin / Copper tube
mm
m
3 … 1.4
2
3.25
3 - 12
Mini Multiset Unit Specifications
1. Outdoor Unit
Outdoor unit (E)
MODEL No.
AES 05 MMIH
Power source
220 - 230 - 240 V / 1N / 50 Hz
Controller P.C.B. Ass’y
CR-CR365GXH56
Control circuit fuse
250V, 6.3A
Compressor
INV (Inverter)
Type
Rotary (Hermetic)
Model ... Code No.
Motor rated output
Compressor oil (ETHER FV68S)
C-9RVN273H0T ... 808673805
kW
3.3
cc
1,900
Coil resistance
(Ambient temperature 25°C)
V - U: 0.138, U - W: 0.138
W - V: 0.138
Safety devices
Thermal protector ON / OFF
Microprocessor safety devices
Crank case heater
Compressor current detection circuit
Compressor discharge gas temperature control
V, W
240, 25
High pressure switch
Set pressure ON / OFF
MPa
Propeller (1 ... ø460) ⋅ 2
Fan (Number ... diameter (mm))
Fan motor
Model ... Nominal output
W
UGBTEF – 95STS503 / 504 ... 90W
No. of pole ... r.p.m.
8 ... 250 – 800
Safety device
Microprocessor safety devices
Yes
Heat exchanger
Coil
Rows…fin pitch
Face area
Aluminum plate fin / Copper tube
mm
m
3 … 1.4
2
3.25
3 - 13
3
Mini Multiset Unit Specifications
1. Outdoor Unit
Outdoor unit (F)
MODEL No.
AES 06 MMIH
Power source
220 - 230 - 240 V / 1N / 50 Hz
Controller P.C.B. Ass’y
CR-CR605GXH56
Control circuit fuse
250V, 6.3A
Compressor
INV (Inverter)
Rotary (Hermetic)
Type
Model ... Code No.
Motor rated output
Compressor oil (ETHER FV68S)
C-9RVN273H0T ... 808673805
kW
4
cc
1,900
Coil resistance
(Ambient temperature 25°C)
V - U: 0.138, U - W: 0.138
W - V: 0.138
Safety devices
Thermal protector ON / OFF
Microprocessor safety devices
Crank case heater
Compressor current detection circuit
Compressor discharge gas temperature control
V, W
240, 25
High pressure switch
Set pressure ON / OFF
3
MPa
Propeller (1 ... ø460) ⋅ 2
Fan (Number ... diameter (mm))
Fan motor
Model ... Nominal output
W
UGBTEF – 95STS503 / 504 ... 90W
No. of pole ... r.p.m.
8 ... 250 – 800
Safety device
Microprocessor safety devices
Yes
Heat exchanger
Coil
Rows…fin pitch
Face area
Aluminum plate fin / Copper tube
mm
m
3 … 1.4
2
3.25
3 - 14
Electrical wiring port (ø1.9)
Electrical wiring port (ø1.6)
Auxiliary connection tube (ø15.88 to ø19.05), 6 hp only
7
8
9
13
70
66
6
60
5
Wind
direction 13
940
219 150
Wind direction
13
13
Electrical wiring port (ø2.9)
6
170
Electrical wiring port (ø3.8)
340
5
296
Refrigerant tubing port
1230
4
18
110
99
20
9
3
2
8
7
4
Wind
direction
2 x ø32 holes (holes for drain)
Of the 4 ø32 holes, use 1 of the 2 holes specified
for drain use to install the drain port.
Use rubber plugs to seal the remaining 3 holes.
20
10
10
380
405
15
Refrigerant tubing (gas tube), flared connection (ø15.88)
81
71
120
140
167
197
3
173
573
600
Refrigerant tubing (liquid tube), flared connection (ø9.52)
141
288
36
60
110
130
62
Wind
direction
R3
0
4
5
6
7
8
117
56
R
19
60
Installation anchoring hole (4-R6.5), anchor bolt: M10
72
121
274
8
2
87
57
46
For R410A only
168
3- 15
198
4
5
7
6
8
AES 04 MMIH-AES 05 MMIH-AES 06 MMIH
227
210
185
170
150
1
Mini Multiset Unit Specifications
1. Outdoor Unit
1-3. Dimensional Data
3
Mini Multiset Unit Specifications
1. Outdoor Unit
1-4. Refrigerant Flow Diagram
AES 04 MMIH
AES 05 MMIH
AES 06 MMIH
6
Discharge
HPS
Suction
Connection diameter
ø15.88 mm
LP removal
HP removal
STF – 0401G
Cooling cycle
Heating cycle
Brazing BCuP – 3
Outside air
C1
UKV – 30D40
3
AES 04 MMIH
AES 05 MMIH
AES 06 MMIH
Discharge
HPS
Suction
Connection diameter
ø15.88 mm
LP removal
HP removal
Cooling cycle
Heating cycle
Brazing BCuP – 3
Outside air
C1
3 - 16
Mini Multiset Unit Specifications
1. Outdoor Unit
1-5. Sound Data
(1) Sound Power Level
AES 04 MMIH
AES 05 MMIH
6
Model
Sound Power
Level
AES 04 MMIH
AES 05 MMIH
67 dB (A)
Cooling
Condition
90
80
NC – 70
Sound Power Level (dB)
70
60
NC – 60
50
NC – 50
40
NC – 40
30
NC – 30
20
10
NC – 20
63
125
250
500
1000
2000
4000
Frequency at center of sound pressure band (Hz)
NOTE
1. dBA = A – weighted sound power level (A – scale according to IEC)
2. Reference acoustic intensity 0 dB = 10–12 W/m2
3 - 17
8000
3
Mini Multiset Unit Specifications
1. Outdoor Unit
AES 06 MMIH
Model
AES 06 MMIH
Sound Power
Level
68 dB (A)
Cooling
Condition
90
80
NC – 70
3
Sound Power Level (dB)
70
60
NC – 60
50
NC – 50
40
NC – 40
30
NC – 30
20
10
NC – 20
63
125
250
500
1000
2000
4000
Frequency at center of sound pressure band (Hz)
NOTE
1. dBA = A – weighted sound power level (A – scale according to IEC)
2. Reference acoustic intensity 0 dB = 10–12 W/m2
3- 18
8000
Mini Multiset Unit Specifications
1. Outdoor Unit
(2) Sound Pressure Level
AES 04 MMIH
AES 05 MMIH
6
AES 04 MMIH
AES 05 MMIH
Sound Pressure Level Front
51 dB (A)
Cooling
Quiet Mode 48 dB (A)
Model
1 m in front at height of 1.5 m
Condition
Front
Quiet Mode
90
80
NC – 70
Octave Band Level (dB)*
70
60
NC – 60
50
NC – 50
40
NC – 40
30
20
NC – 30
Approximate
minimum audible
limit for continuous
noise
10
Overall
63
125
NC – 20
250
500
1000
2000
4000
Frequency at center of sound pressure band (Hz)
* 0 dB = 0.0002 ∝bar
3 - 19
8000
3
Mini Multiset Unit Specifications
1. Outdoor Unit
AES 06 MMIH
Model
AES 06 MMIH
Sound Pressure Level
Cooling
Front
52 dB (A)
Quiet Mode 49 dB (A)
Condition
1 m in front at height of 1.5 m
Front
Quiet Mode
90
80
NC – 70
3
Octave Band Level (dB)*
70
60
NC – 60
50
NC – 50
40
NC – 40
30
20
NC – 30
Approximate
minimum audible
limit for continuous
noise
10
Overall
63
125
NC – 20
250
500
1000
2000
4000
Frequency at center of sound pressure band (Hz)
* 0 dB = 0.0002 ∝bar
3 - 20
8000
Test Run and Others
Contents
4. Test Run and Others
1. Air Purging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
2. Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .-45
2-1.
2-2.
2-3.
2-4
2-5.
2-6.
Preparing for Test Run . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-5
Test Run Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
Outdoor Unit PCB Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-7
Auto Address Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
Caution for Pump Down . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16
Meaning of Alarm Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-16
3. Electrical Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18
3-1. General Precautions on Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-18
3-2. Recommended Wire Length and Wire Diameter for Power Supply System . . . . . . . . . . . . . . . . . . . .4-18
3-3. Wiring System Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-19
4. Installation Standards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-22
4-1. Check of Density Limit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-22
4-2. Precautions for Installation Using New Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-23
4
4-1
Test Run and Others
1. Air Purging
Air and moisture in the refrigerant system may have
undesirable effects as indicated below.





Manifold gauge
pressure in the system rises
operating current rises
cooling (or heating) efficiency drops
moisture in the refrigerant circuit may freeze and
block capillary tubing
water may lead to corrosion of parts in the refrigerant system
Fig. 5-1
Therefore, the indoor unit and tubing between the
indoor and outdoor unit must be leak tested and
evacuated to remove any noncondensables and
moisture from the system.
Vacuum pump
Outlet
Inlet
 Air Purging with a Vacuum Pump (for Test Run)
Preparation
Check that each tube (both liquid and gas tubes)
between the indoor and outdoor units has been properly connected and all wiring for the test run has been
completed. Remove the valve caps from both the gas
tube and liquid tube service valves on the outdoor
unit. Note that both liquid and gas tube service valves
on the outdoor unit are kept closed at this stage.
Fig. 5-2
Manifold valve
Pressure
gauge
Leak test
Lo
Hi
(1) Attach a manifold valve (with pressure gauges)
and dry nitrogen gas cylinder to this service port
with charge hoses.
4
CAUTION
Charge hose
Cylinder
valve
Use a manifold valve for air
purging. If it is not available,
use a stop valve for this purpose. The “Hi” knob of the
manifold valve must always
be kept closed.
Nitrogen gas cylinder
(In vertical standing
position)
Service port ø7.94 mm
(2) Pressurize the system to no more than 36 kgf/cm2G
with dry nitrogen gas and close the cylinder valve
when the gauge reading reaches 36 kgf/cm2G.
Then, test for leaks with liquid soap.
Open
Gas
tube
Close
Outdoor unit
CAUTION
To avoid nitrogen entering
the refrigerant system in a
liquid state, the top of the
cylinder must be higher than
the bottom when you pressurize the system. Usually,
the cylinder is used in a vertical standing position.
(Refer to the previous page.)
Open
Liquid
tube
Close
Fig. 5-3
4-2
Test Run and Others
1. Air Purging
(3) Do a leak test of all joints of the tubing (both
indoor and outdoor) and both gas tube and liquid
tube service valves. Bubbles indicate a leak. Wipe
off the soap with a clean cloth after the leak test.
Manifold valve
(4) After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening the
charge hose connector at the nitrogen cylinder.
When the system pressure is reduced to normal,
disconnect the hose from the cylinder.
Pressure
gauge
Lo
Hi
Evacuation
(1) Attach the charge hose end described in the preceding steps to the vacuum pump to evacuate the
tubing and indoor unit. Confirm that the “Lo” knob
of the manifold valve is open. Then, run the vacuum pump. The operation time for evacuation
varies with the tubing length and capacity of the
pump. The following table shows the amount of
time for evacuation:
Vacuum pump
Service port ø7.94 mm
Open
Required time for evacuation
when 30 gal/h vacuum pump is used
If tubing length is
If tubing length is
less than 15 m
longer than 15 m
45 min. or more
90 min. or more
Gas
tube
Close
Outdoor unit
Open
Liquid
tube
NOTE
Close
The required time in the above table is calculated
based on the assumption that the ideal (or target)
vacuum condition is less than 667 Pa (–755 mm Hg,
5 Torr).
Fig. 5-4
4
(2) When the desired vacuum is reached, close the
“Lo” knob of the manifold valve and turn off the
vacuum pump. Confirm that the gauge pressure is
under 667 Pa (–755 mmHg, 5 Torr) after 4 to 5
minutes of vacuum pump operation.
4-3
Test Run and Others
1. Air Purging
CAUTION
Use a cylinder designed for
use with R410A respectively.
Manifold valve
Pressure
gauge
Charging additional refrigerant

Lo
Hi
Charging additional refrigerant (calculated from the
liquid tube length as shown in Section 2. 2-7 “Additional Refrigerant Charge”) using the liquid tube
service valve. (Fig. 5-5)

Use a balance to measure the refrigerant accurately.

If the additional refrigerant charge amount cannot
be charged at once, charge the remaining refrigerant in liquid form by using the gas tube service
valve with the system in cooling operation mode at
the time of test run. (Fig. 5-6)
Valve
Liquid
Finishing the job
R410A
(1) With a hex wrench, turn the liquid tube service
valve stem counter-clockwise to fully open the
valve.
Close
Gas
tube
(2) Turn the gas tube service valve stem counterclockwise to fully open the valve.
CAUTION
4
Close
To avoid gas from leaking when
removing the charge hose,
make sure the stem of the gas
tube is turned all the way out
(“BACK SEAT” position).
Outdoor unit
Open
Liquid
tube
Close
(3) Loosen the charge hose connected to the gas
tube service port (for ø7.94 mm tube) slightly to
release the pressure, then remove the hose.
Fig. 5-5
(4) Replace the service port cap on the gas tube service port and fasten the cap securely with an monkey spanner or box wrench. This process is very
important to prevent gas from leaking from the
system.
Open
(5) Replace the valve caps at both gas tube and liquid
tube service valves and fasten them securely.
Gas
tube
Open
This completes air purging with a vacuum pump. The
air conditioner is now ready for a test run.
Outdoor unit
Close
Liquid
tube
Open
Fig. 5-6
4-4
Test Run and Others
2. Test Run
2-1. Preparing for Test Run

Before attempting to start the air conditioner,
check the following.
ON
(1) All loose matter is removed from the cabinet,
especially steel filings, bits of wire, and clips.
(Power must be turned ON
at least 5 hours before
attempting test run)
(2) The control wiring is correctly connected and all
electrical connections are tight.
(3) The transportation pads for the indoor fan have
been removed. If not, remove them now.
Power mains switch
(4) The power has been connected to the unit for at
least 5 hours before starting the compressor. The
bottom of the compressor should be warm to the
touch and the crankcase heater around the feet of
the compressor should be hot to the touch.
(Fig. 5-7)
Fig. 5-7
(5) Both the gas and liquid tube service valves are
open. If not, open them now. (Fig. 5-8)
(6) Request that the customer be present for the trial
run.
Explain the contents of the instruction manual, then
have the customer actually operate the system.
(7) Be sure to give the instruction manual and warranty certificate to the customer.
(8) When replacing the control PCB, be sure to make
all the same settings on the new PCB as were in
use before replacement.
The existing EEP ROM is not changed, and is
connected to the new control PCB.
4
Gas tube service cap
Liquid tube service cap
Fig. 5-8
4- 5
Test Run and Others
2. Test Run
Items to Check Before the Test Run
2-2. Test Run Procedure
1. Turn the remote power switch on at
least 5 hours before the test, in order
to energize the crank case heater.
Recheck the items to check before the test run.
2. Turn the outdoor service valves (2
locations) to the full-open positions.
Set the unit address.

Set the No. of outdoor units.
<Outdoor unit control PCB>
Unit No. setting switch
(S004)
Set the No. of indoor units.

NO CASE 1
Are the inter-unit control wires
connected to more than 1 refrigerant
system?
(Check the link wiring.)
Use caution when making the settings. If there are duplicated system
addresses, or if the settings for the
Nos. of the indoor units are not consistent, an alarm will occur and the
system will not start.
These settings are not made on the
indoor unit PCB.
YES
<Outdoor unit control PCB>
Unit No. setting switch
(S002 and S003)
Set the system address.
When multiple outdoor units exist, disconnect the terminals
extended from the shorted plugs (CN33) at all outdoor unit
PCBs except for 1.
Alternatively, move the sockets to the OPEN side.
Refer to Fig. 10-4
YES CASE 2
Is it possible to turn ON the power only
for the 1 refrigerant system where the
test run will be performed?
Turn ON the indoor and
outdoor unit power for that
refrigerant system only.
NO
Will automatic address setting be
performed in Heating mode?
NO
YES
CASE 3B
Is it OK to start the compressors?
4
Make necessary corrections.
Is it OK to start the compressors?
Turn ON the indoor and
outdoor unit power.
Check the alarm contents.
Turn ON the indoor and
outdoor unit power.
*2
NO
Make necessary
corrections
*2
Short-circuit the mode change pin
(CN50) on the outdoor unit PCB.
At the same time, short-circuit the
automatic address pin (CN51) for 1
second or longer, then pull it out.
*3
Turn OFF the indoor and
CASE 3A
Short-circuit the automatic address
pin (CN51) on the outdoor unit PCB
for 1 second or longer,
then release it.
Turn OFF the indoor
and outdoor unit
Refer to “Table of
Self-Diagnostic Functions and
Description of Alarm Displays.”
LED 1 and 2 blink alternately
(about 2 or 3 minutes).
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
*3
Start indoor and outdoor unit
cooling operation.
LED 1 and 2 blink alternately.
Start indoor and outdoor unit
heating operation.
LED 1 and 2 blink alternately.
Check the alarm
contents.
*2 A minimum of 5 hours must have passed after the
power was turned ON to the outdoor unit.
*3 All indoor units operate in all refrigerant systems
where the power is ON.
NO
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
YES
Check that test run preparation is OK.
(Do not allow the short-circuited pins to remain short-circuited.)
Set the wired remote controller for test run.
Refer to the remote
controller test-run
settings.
Short-circuit the automatic address pin (CN51)
on the outdoor unit PCB for 1 second or longer,
then release it.
Does system operate?
NO
Check and make corrections according to
“Table of Self Diagnostic Functions.”
YES
Return remote control to normal mode
End test run.
Fig. 5-9
4- 6
YES
Test Run and Others
2. Test Run
2-3. Outdoor Unit PCB Setting
CN33
4
S003
CN51
CN50
S002
D043
(LED2)
S004
D042
(LED1)
Fig. 5-10
4-- 7
Test Run and Others
2. Test Run
Examples of the No. of indoor units settings
No. of indoor units
Indoor unit setting (S004)
(Rotary switch, red)
1
1 unit (factory setting)
Set to 2
9
9 units
2
2 units
Set to 1
Set to 9
Examples of refrigerant circuit (R.C.) address settings (required when link wiring is used)
System address No.
System address (S003)
(2P DIP switch, blue)
10 20
ON
System address (S002)
(Rotary switch, black)
1
ON
System 1 (factory setting)
System 11
Both OFF
1 2
ON
OFF
ON
2
ON
OFF
ON
1 2
ON
OFF
ON
2
OFF
1
System 21
System 30
1
1 ON
2 ON
1 & 2 ON
1
1
0
4
4-8
Set to 1
Set to 1
Set to 1
Set to 0
Test Run and Others
2. Test Run
2-4. Auto Address Setting
Basic wiring diagram: Example (1)
• If link wiring is not used
(The inter-unit control wires are not connected to multiple refrigerant systems.)
Indoor unit addresses can be set without operating the compressors.
No. 1 unit settings
(S004)
System address
(system 1 setting)
(S003)
ON
1
2
No. of indoor units
(8 units setting)
(S004)
(S002)
ON
1
8
OFF
Unit
No. 1
Outdoor Unit
Inter-unit control wiring
1-1
Indoor Unit
1-2
1-3
1-8
Remote controller
cross-over wiring
Remote controller
Fig. 5-11
(1) Automatic Address Setting from the Outdoor Unit
1. On the outdoor unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the
ON
DIP switch (S003) is set to “0.” ON
(These are the settings at the time of factory shipment.)
1
2
OFF
2. To set the number of indoor units that are connected to the outdoor unit to 8, on the outdoor unit control PCB set
the No. of indoor units rotary switch (S004) to “8.”
3. Turn ON the power to the indoor and outdoor units.
4. On the outdoor unit control PCB, short-circuit the automatic address pin (CN51) for 1 second or longer, then
release it.
.
(Communication for automatic address setting begins.)
.
* To cancel, again short-circuit the automatic address pin (CN51) for 1 second or longer, then pull it out.
The LED that indicates that automatic address setting is in progress turns OFF and the process is
stopped.
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor unit control PCB turn OFF.)
.
5. Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 to 3, then use the remote controller and
complete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
4- 9
4
Test Run and Others
2. Test Run
Basic wiring diagram: Example (2)
 If link wiring is used
No. 1 unit settings
No. of indoor units
(6 units setting)
System address
(system 1 setting)
(S003)
(S004)
(S002)
ON
ON
* When multiple outdoor units exist, remove the socket that
is used to short-circuit the terminal plug (CN33) from all
outdoor unit PCBs except for 1.
Alternatively, move the sockets to the “OPEN” side.
1
6
1
2
OFF
Outdoor unit
system 1
Leave the socket
that is used to
short-circuit the
terminal plug.
(CN33)
Unit
No. 1
Inter-unit control wiring
1-1
Indoor unit
1-2
1-3
1-6
Remote controller
communication wiring
Remote
controller
No. 2 unit settings
(S002)
No. of indoor units
(7 units setting)
(S003)
ON
ON
7
System address
(system 2 setting)
(S004)
2
2
OFF
7
1
4
Outdoor unit
system 2
Leave the socket
that is used to open
circuit the terminal
plug (CN33).
Unit
No. 1
Inter-unit control wiring
To other system
link wiring
Indoor unit
2-1
2-2
2-7
Remote controller
cross-over wiring
Remote
controller
Make settings as appropriate for the cases listed below.
(Refer to the instructions on the following pages.)
 Indoor and outdoor unit power can be turned ON for each system separately.
Case 1
 Indoor and outdoor unit power cannot be turned ON for each system separately.
Automatic address setting in Heating mode
Case 2
Automatic address setting in Cooling mode
Case 3
Fig. 5-12
4- 10
Test Run and Others
2. Test Run

Case 1 Automatic Address Setting (no compressor operation)
Indoor and outdoor unit power can be turned ON for each system separately.
Indoor unit addresses can be set without operating the compressors.
Automatic Address Setting from Outdoor Unit
1. On the outdoor unit control PCB, check that the system address rotary switch (S002) is set to “1” and that the
ON (These are the settings at the time of factory shipment.)
DIP switch (S003) is set to “0.” ON
1
2
OFF
2. To set the number of indoor units that are connected to the outdoor unit to 6, on the outdoor unit control PCB set
the No. of indoor units rotary switch (S004) to “6.”
3. At the outdoor unit where all indoor and outdoor unit power has been turned ON, short-circuit the automatic
address pin (CN51) for 1 second or longer, then pull it out.
.
(Communication for automatic address setting begins.)
.
* To cancel, again short-circuit the automatic address pin (CN51) for 1 second or longer, then pull it out.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor unit control PCB turn OFF.)
.
4. Next turn the power ON only for the indoor and outdoor units of the next (different) system. Repeat steps 1 – 3
in the same way to complete automatic address settings for all systems.
.
5. Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 and 2, then use the remote controller
complete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
4
4- 11
Test Run and Others
2. Test Run
Case 2 Automatic Address Setting in Heating Mode
 Indoor and outdoor unit power cannot be turned ON for each system separately.
In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.
Therefore perform this process only after completing all refrigerant tubing work.
Automatic Address Setting from Outdoor Unit
1. Perform steps 1 and 2 in the same way as for Case 1 .
2. Turn the indoor and outdoor unit power ON at all systems.
.
3. To perform automatic address setting in Heating mode , on the outdoor unit control PCB in the refrigerant system where you wish to set the addresses, short-circuit the automatic address pin (CN51) for 1 second or longer,
then pull it out.
(Be sure to perform this process for one system at a time. Automatic address settings cannot be performed for
more than one system at the same time.)
.
(Communication for automatic address setting begins, the compressors turn ON, and automatic address
setting in heating mode begins.)
(All indoor units operate.)
.
* To cancel, again short-circuit the automatic address pin (CN51) for 1 second or longer, then pull it out.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor unit control PCB turn OFF.)
4. At the outdoor unit in the next (different) system, short-circuit the automatic address pin (CN51) for 1 second or
longer, then pull it out.
.
(Repeat the same steps to complete automatic address setting for all units.)
4
.
5.
Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 and 2, then use the remote controller
complete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
4- 12
Test Run and Others
2. Test Run

Case 3 Automatic Address Setting in Cooling Mode
Indoor and outdoor unit power cannot be turned ON for each system separately.
In the following, automatic setting of indoor unit addresses is not possible if the compressors are not operating.
Therefore perform this process only after completing all refrigerant tubing work.
Automatic address setting can be performed during Cooling operation.
Automatic Address Setting from Outdoor Unit
1. Perform steps 1 and 2 in the same way as for Case 1 .
2. Turn the indoor and outdoor unit power ON at all systems.
.
3. To perform automatic address setting in Cooling mode , on the outdoor unit control PCB in the refrigerant system where you wish to set the addresses, short-circuit the mode change 2P pin (CN50). At the same time,
short-circuit the automatic address pin (CN51) for 1 second or longer, then pull it out. (Be sure to perform this
process for one system at a time. Automatic address settings cannot be performed for more than one system at
the same time.)
.
(Communication for automatic address setting begins, the compressors turn ON, and automatic address
setting in Cooling mode begins.)
(All indoor units operate.)
.
* To cancel, again short-circuit the automatic address pin (CN51) for 1 second or longer, then pull it out.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor unit
control PCB turn OFF.)
4. At the outdoor unit in the next (different) system, short-circuit the automatic address pin (CN51) for 1 second or
longer, then pull it out.
.
(Repeat the same steps to complete automatic address setting for all units.)
4
.
5.
Operation from the remote controllers is now possible.
* Automatic address setting in Cooling mode cannot be done from the remote controller.
Automatic Address Setting from the Remote Controller
Selecting each refrigerant system individually for automatic address setting
---Automatic address setting for each system: Item code “A1”

Press the remote controller timer time
button and
same time. (Press and hold for 4 seconds or longer.)

Next, press either the temperature setting
(Check that the item code is “A1.”)

Use either the
or
automatic address setting.

Then press the
or
button at the
button.
button to set the system No. to perform
button.
(Automatic address setting for one refrigerant system begins.)
(When automatic address setting for one system is completed, the system
returns to normal stopped status.) <Approximately 4 – 5 minutes is required.>
(During automatic address setting, “SETTING” is displayed on the remote controller. This message disappears
when automatic address setting is completed.)

Repeat the same steps to perform automatic address setting for each successive system.
4- 13
Test Run and Others
2. Test Run
Display during automatic address setting

On outdoor unit PCB
LED 2
1
Blink alternately
* Do not short-circuit the automatic address setting pin (CN51) again while automatic
address setting is in progress. Doing so will cancel the setting operation and will cause
LEDs 1 and 2 to turn OFF.
* When automatic address setting has been successfully completed, both LEDs 1 and 2 turn OFF.
* LED 1 is D042. LED 2 is D043.
* If automatic address setting is not completed successfully, refer to the table below and correct the problem.
Then perform automatic address setting again.

Display details of LEDs 1 and 2 on the outdoor unit control PCB
(
: ON
LED 1
:: Blinking
: OFF)
Display meaning
LED 2
After the power is turned ON (and automatic address setting is not in progress), no communication with the indoor
units in that system is possible.
After the power is turned ON (and automatic address setting is not in progress), 1 or more indoor units are
confirmed in that system; however, the number of indoor units does not match the number that was set.
Alternating
Automatic address setting is in progress.
Automatic address setting completed.
Simultaneous
Alternating
Note:

4
At time of automatic address setting, the number of indoor units did not match the number that was set.
(when indoor units are operating) indication appears on the displa y.
Refer to Table of Self-Diagnostic Functions and Description of Alarm Displays.
indicates that the solenoid is fused or that there is a C T (current detection circuit) failure (current is detected when
the compressor is OFF).
Remote controller display during automatic setting
is blinking
4- 14
Test Run and Others
2. Test Run
Request concerning recording the indoor/outdoor unit combination Nos.
After automatic address setting has been completed, be sure to record them for future reference.
List the outdoor unit system address and the addresses of the indoor units in that system in an easily visible location
(next to the nameplate), using a permanent marking pen or similar means that cannot be erased easily.
Example: (Outdoor) 1 – (Indoor) 1-1, 1-2, 1-3…
(Outdoor) 2 – (Indoor) 2-1, 2-2, 2-3…
These numbers are necessary for later maintenance. Please be sure to indicate them.
Checking the indoor unit addresses
Use the remote controller to check the indoor unit address.
<If 1 indoor unit is connected to 1 remote controller>
1. Press and hold the
button and
button for 4 seconds or longer (simple settings mode).
2. The address is displayed for the indoor unit that is connected to the remote controller.
(Only the address of the indoor unit that is connected to the remote controller can be checked.)
3. Press the
button again to return to normal remote controller mode.
<If multiple indoor units are connected to 1 remote controller (group control)>
1. Press and hold the
button and
button for 4 seconds or longer (simple settings mode).
2. “ALL” is displayed on the remote controller.
3. Next, press the
button.
4. The address is displayed for 1 of the indoor units which is connected to the remote controller. Check that the
fan of that indoor unit starts and that air is discharged.
5. Press the
6. Press the
button again and check the address of each indoor unit in sequence.
button again to return to normal remote controller mode.
4
Indoor unit address
Number changes to indicate which indoor unit is currently selected.
Remote Controller Test Run Settings
1. Press the remote controller


button for 4 seconds or longer. Then press the
button.
“TEST” appears on the LCD display while the test run is in progress.
The temperature cannot be adjusted when in Test Run mode.
(This mode places a heavy load on the machines. Therefore use it only when performing the test run.)
2. The test run can be performed using the HEAT, COOL, or FAN operation modes.
Note: The outdoor units will not operate for approximately 3 minutes after the power is turned ON and after
operation is stopped.
3. If correct operation is not possible, a code is displayed on the remote controller display.
(Refer to “2-6. Meaning of Alarm Messages” and correct the problem.)
4. After the test run is completed, press the
button again. Check that “TEST” disappears from the remote controller display.
(To prevent continuous test runs, this remote controller includes a timer function that cancels the test run after
60 minutes.)
* If the test run is performed using the wired remote controller, operation is possible even if the cassette-type ceiling panel has not been installed. (“P09” display does not occur.)
4- 15
Test Run and Others
2. Test Run
2-5. Caution for Pump Down
Pump down means refrigerant gas in the system is
returned to the outdoor unit. Pump down is used
when the unit is to be moved, or before servicing the
refrigerant circuit.

This outdoor unit cannot collect more than the rated refrigerant amount as shown
by the nameplate on the back.

If the amount of refrigerant is more than that recommended, do not conduct pump
down. In this case use another refrigerant collecting system.
CAUTION
2-6. Meaning of Alarm Messages
Table of Self-Diagnostics Functions and Description of Alarm Displays
Alarm messages are indicated by the blinking of LED 1 and 2 (D72, D75) on the outdoor unit PCB. They are also displayed on
the wired remote controller.
 Viewing the LED 1 and 2 (D72 and D75) alarm displays
LED 1
LED 2
Alternating
(
Alarm contents
Alarm display
LED 1 blinks M times, then LED 2 blinks N times. The cycle then repeats.
M = 2: P alarm 3: H alarm 4: E alarm 5: F alarm 6: L alarm
N = Alarm No.
Example: LED 1 blinks 2 times, then LED 2 blinks 17 times. The cycle then repeats.
Alarm is “P17.”
: Blinking)
Alarm
message
Possible cause of malfunction
Serial communication errors
Mis-setting
Remote controller is detecting
error signal from indoor unit.
4
Error in receiving serial communication signal.
(Signal from main indoor unit in case of group control)
Ex: Auto address is not completed.
<E01>
Error in transmitting serial communication signal.
<E02>
Indoor unit is detecting error signal from remote controller (and system controller).
Indoor unit is detecting error
signal from outdoor unit.
Error in receiving serial communication signal.
When turning on the power supply, the number of connected
indoor units does not correspond to the number set. (Except R.C.
address is “0.”)
Error of the outdoor unit in receiving serial communication signal
from the indoor unit.
Improper setting of indoor unit or Indoor unit address setting is duplicated.
remote controller.
Remote controller address connector (RCU. ADR) is duplicated.
(Duplication of main remote controller)
Starting auto. address setting is prohibited.
During auto. address setting,
number of connected units does This alarm message shows that the auto address connector CN100
not correspond to number set.
is shorted while other RC line is executing auto address operation.
When turning on the power
supply, number of connected
units does not correspond to
number set.
(Except R.C. address is “0.”)
Indoor unit communication error
of group control wiring.
Error in auto. address setting. (Number of connected indoor units
is less than the number set)
Error in auto. address setting. (Number of connected indoor units
is more than the number set)
No indoor unit is connected during auto. address setting.
<<E03>>
E04
<E06>
E08
<<E09>>
E12
E15
E16
E20
Error of outdoor unit address setting.
E25
Error of main indoor unit in receiving serial communication signal
from sub indoor units.
E18
Continued
4- 16
Test Run and Others
2. Test Run
Alarm
message
Possible cause of malfunction
Serial communication errors
Mis-setting
Improper setting.
This alarm message shows when the indoor unit for multiple-use
is not connected to the outdoor unit.
Duplication of main indoor unit address setting in group control.
Duplication of outdoor R.C. address setting.
Thermistor
fault
Indoor thermistor is either open
or damaged.
Outdoor thermistor is either
open or damaged.
Group control wiring is connected to individual control indoor unit.
L07
Protective device for compressor
No. 1 is activated.
L06
L08
Capacity code of indoor unit is not set.
<<L09>>
Capacity code of outdoor unit is not set.
L10
Mis-matched connection of outdoor units which have different
kinds of refrigerant.
L17
Thermal protector in indoor unit fan motor is activated.
Improper wiring connections of ceiling panel.
Float switch is activated.
Power supply voltage is unusual. (The voltage is more than 260 V
or less than 160 V between L and N phase.)
L18
<<P01>>
<<P09>>
<<P10>>
P02
Incorrect discharge temperature. (Comp. No. 1)
P03
Operation of O2 sensor
Outdoor unit fan motor is unusual.
P14
P22
Compressor running failure resulting from missing phase in the
compressor wiring, etc. (Start failure not caused by IPM or no gas.)
P16
Overcurrent at time of compressor runs more than 80Hz (DCCT
secondary current or ACCT primary current is detected at a time
other than when IPM has tripped.)
P26
IPM trip (IPM current or temperature)
H31
Inverter for compressor is unusual. (DC compressor does not
operate.)
P29
Indoor coil temp. sensor (E1)
Indoor coil temp. sensor (E2)
Indoor coil temp. sensor (E3)
Indoor suction air (room) temp. sensor (TA)
Indoor discharge air temp. sensor (BL)
Compressor discharge gas temp. sensor (TD)
Outdoor No. 1 coil liquid temp. sensor (C1)
Outdoor air temp. sensor (TO)
Compressor suction port temperature sensor (TS)
High pressure sensor
EEPROM on indoor unit PCB failure
Protective
device for
compressor is
activated
L04
L05
4-way valve operation failure
Protective device in indoor unit
is activated.
<L03>
There are 2 or more indoor units Priority set remote controller
controllers which have operation
circuit. Non-priority set remote controller
mode priority in refrigerant
1
Indoor unit address is not set.
Activation of
protective
device
L02
<<F01>>
<<F02>>
<<F03>>
<<F10>>
<<F11>>
F04
F07
F08
F12
F16
F29
EEPROM on the outdoor unit PCB is a failure.
F31
Current is not detected when comp. is ON.
H03
4- 17
4
Test Run and Others
3. Electrical Wiring
3-1. General Precautions on Wiring
(1) Before wiring, confirm the rated voltage of the unit
as shown on its nameplate, then carry out the
wiring closely following the wiring diagram.
(7) Regulations on wire diameters differ from locality
to locality. For field wiring rules, please refer to
your LOCAL ELECTRICAL CODES before beginning.
(2) Provide a power outlet to be used exclusively for
each unit, and a power supply disconnect and circuit breaker for overcurrent protection should be
provided in the exclusive line.
You must ensure that installation complies with all
relevant rules and regulations.
(8) To prevent malfunction of the air conditioner
caused by electrical noise, care must be taken
when wiring as follows:
(3) To prevent possible hazards from insulation failure, the unit must be grounded.
(4) Each wiring connection must be done in accordance with the wiring system diagram. Wrong
wiring may cause the unit to misoperate or
become damaged.
(5) Do not allow wiring to touch the refrigerant tubing,
compressor, or any moving parts of the fan.

The remote control wiring and the inter-unit control
wiring should be wired apart from the inter-unit
power wiring.

Use shielded wires for inter-unit control wiring
between units and ground the shield on both sides.
(9) If the power supply cord of this appliance is damaged, it must be replaced by a repair shop
appointed by the manufacturer, because special
purpose tools are required.
(6) Unauthorized changes in the internal wiring can be
very dangerous. The manufacturer will accept no
responsibility for any damage or misoperation that
occurs as a result of such unauthorized changes.
3-2. Recommended Wire Length and Wire Diameter for Power Supply System
Outdoor unit
(A) Power supply
4
AES 04 MMIH
AES 05 MMIH
AES 06 MMIH
Wire size
4 mm 2
6 mm 2
6 mm 2
Time delay fuse or
Max. length circuit capacity
16 m
25 A
24 m
35 A
20 m
35 A
Indoor unit
Type
(B) Power supply Time delay fuse or
circuit capacity
2.5 mm2
AWS
ACS,ASS,ADS,FC,SD
ADPS
Max. 150 m
10 ~ 16A
Max. 130 m
10 ~ 16A
Max. 60 m
10 ~ 16A
Control wiring
(C) Inter-unit (between outdoor and
indoor units) control wiring
(D) Remote control wiring
(E) Control wiring for group control
0.75 mm 2 (AWG #18)
Use shielded wiring*
0.75 mm 2 (AWG #18)
Use shielded wiring
0.75 mm2 (AWG #18)
Use shielded wiring
Max. 1,000 m
Max. 500 m
Max. 500 m (Total)
NOTE
* With ring-type wire terminal.
4- 18
Test Run and Others
3. Electrical Wiring
3-3. Wiring System Diagram
Indoor
unit (No. 1)
L
Power supply
220-240V 50Hz N
Outdoor unit
INV unit
1
3
Ground
Remote
controller
WHT 1
BLK 2
B
Power supply
220–240V-1N
50Hz
Ground
1
2
U2
Ground
1
1
2
L
N
C
U1
D
A
L
N
2
2
Ground
C
Indoor
unit (No. 2)
L
Power supply
220-240V 50Hz N
1
2
3
Ground
Remote
controller
WHT 1
BLK 2
B
U1
U2
D
1
1
2
2
Ground
C
Indoor
unit (No. 3)
Group control:
L
Power supply
220-240V 50Hz N
1
2
3
Ground
B
E
U1
U2
1
2
Ground
C
Indoor
unit (No. n)
L
Power supply
220-240V 50Hz N
1
2
3
Ground
Remote
controller
WHT 1
BLK 2
B
U1
U2
D
7P terminal board
1
1
2
4
2
Ground
NOTE
(1) Refer to Section 3-2. “Recommended Wire Length
and Wire Diameter for Power Supply System” for
the explanation of “A,” “B,” “C,” “D,” and “E,” in the
above diagram.
U1 U2 R1 R2
Remote
Inter-unit
control wiring controller
1(L) 2(N)
Power
supply
*** Type
(2) The basic connection diagram of the indoor unit
shows the 7P terminal board, so the terminal
boards in your equipment may differ from the diagram.
8P terminal board
(3) Refrigerant Circuit (R.C.) address should be set
before turning the power on.
1
2
U1
1(L)2(N)
Power
supply
(4) Regarding the R.C. address setting, refer to page
5-8. Auto. address setting can be executed by
remote controller automatically. Refer to page
5-9 – 5-13.
U2
R1
5P terminal board
R2
R1 R2
Remote
controller
U1 U2
Inter-unit
control wiring
ASS,ADS,ACS,FC,SD
4- 19
1
2
3
4
5
1(L)2(N) 4 5
Power
Inter-unit
supply control wiring
AWS Type
Test Run and Others
3. Electrical Wiring
CAUTION
(1) When linking outdoor units in a network (S-net link system), disconnect the terminal extended from the
short plug (CN003, 2P Black, location: right bottom on the outdoor main control PCB) from all outdoor
units except any one of the outdoor units.
(When shipping: In shorted condition.)
Otherwise the communication of S-net link system is not performed. For a system without link (no connection wiring between outdoor units), do not remove the short plug.
(2) Do not install the inter-unit control wiring in a way that forms a loop. (Fig. 5-13)
Outdoor unit
Outdoor unit
Outdoor unit
Prohibited
Prohibited
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Fig. 5-13
(3) Do not install inter-unit control wiring such as star
branch wiring. Star branch wiring causes mis-address
setting.
Outdoor unit
NO
Outdoor unit
NO
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
Branch point
Fig. 5-14
4
(4) If branching the inter-unit control wiring, the number of branch points should be 16 or fewer.
(Branches less than 1 m are not included in the total branch number.) (Fig. 5-15)
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Outdoor unit
Indoor unit
Indoor unit
Indoor unit
Indoor unit
more than 1 m
Branch
point
16 or fewer
Indoor unit
Indoor unit
more than 1 m
Indoor unit
less than 1 m
Indoor unit
Fig. 5-15
4- 20
Test Run and Others
3. Electrical Wiring
(5) Use shielded wires for inter-unit control wiring
(c) and ground the shield on both sides, otherwise misoperation from noise may occur.
(Fig. 5-16)
Connect wiring as shown in Section “3-3.
Wiring System Diagram.”
WARNING
Shielded wire
Ground
Loose wiring may cause
the terminal to overheat or
result in unit malfunction.
A fire hazard may also
exist. Therefore, ensure
that all wiring is tightly
connected.
Ground
Fig. 5-16
When connecting each power wire to the terminal, follow the instructions on “How to connect wiring to the
terminal” and fasten the wire securely with the fixing
screw of the terminal plate.
How to connect wiring to the terminal
 For stranded wiring
(1) Cut the wire end with cutting pliers, then strip the
insulation to expose the stranded wiring about 10
mm and tightly twist the wire ends. (Fig. 5-17)
Strip 10 mm
Stranded wire
(2) Using a Phillips head screwdriver, remove the terminal screw(s) on the terminal plate.
Ring
pressure
terminal
(3) Using a ring connector fastener or pliers, securely
clamp each stripped wire end with a ring pressure
terminal.
Fig. 5-17
(4) Place the ring pressure terminal, and replace and
tighten the removed terminal screw using a screwdriver. (Fig. 5-18)
Special
washer
Screw
Ring pressure
terminal
Wire
4
Screw and
Special washer
Terminal plate
Ring
pressure
terminal
Wire
Fig. 5-18
4- 21
Test Run and Others
4. Installation Standards
2. The standards for minimum room volume are as
follows.
4-1. Check of Density Limit
The room in which the air conditioner is to be
installed requires a design that in the event of
refrigerant gas leaking out, its density will not
exceed a set limit.
The refrigerant (R410A), which is used in the air conditioner, is safe, without the toxicity or combustibility of
ammonia, and is not restricted by laws imposed to protect the ozone layer. However, since it contains more
than air, it poses the risk of suffocation if its density
should rise excessively. Suffocation from leakage of
refrigerant is almost non-existent. With the recent
increase in the number of high density buildings, however, the installation of multi air conditioner systems is
on the increase because of the need for effective use
of floor space, individual control, energy conservation
by curtailing heat and carrying power, etc.
Most importantly, the multi air conditioner system is
able to replenish a large amount of refrigerant compared to conventional individual air conditioners. If a
single unit of the multi air conditioner system is to be
installed in a small room, select a suitable model and
installation procedure so that if the refrigerant accidentally leaks out, its density does not reach the limit
(and in the event of an emergency, measures can be
made before injury can occur).
In a room where the density may exceed the limit,
create an opening with adjacent rooms, or install
mechanical ventilation combined with a gas leak
detection device. The density is as given below.
(2) When there is an effective opening with the adjacent room for ventilation of leaking refrigerant gas
(opening without a door, or an opening 0.15% or
larger than the respective floor spaces at the top
or bottom of the door).
Outdoor unit
Refrigerant tubing
Indoor unit
(3) If an indoor unit is installed in each partitioned
room and the refrigerant tubing is interconnected,
the smallest room of course becomes the object.
But when mechanical ventilation is installed interlocked with a gas leakage detector in the smallest
room where the density limit is exceeded, the volume of the next smallest room becomes the object.
Refrigerant tubing
Outdoor unit
Very
small
room
Total amount of refrigerant (kg)
Min. volume of the indoor unit installed room (m3)
= Density limit (kg/m3)
The density limit of refrigerant which is used in multi air conditioners is 0.3 kg/m3 (ISO 5149).
Medium
room
Large room
Mechanical ventilation device – Gas leak detector
3. The minimum indoor floor space compared with the
amount of refrigerant is roughly as follows (when
the ceiling is 2.7 m high):
NOTE
1. If there are 2 or more refrigerating systems in a single refrigerating device, the amount of refrigerant
should be as charged in each independent device.
For the amount of charge in this example:
40
Outdoor unit
e.g., charged
amount (10 kg)
Indoor unit
Small
room
m2 35
e.g., charged
amount (15 kg)
30
Min. indoor floor space
4
(1) No partition (shaded portion)
Indoor unit
Room A Room B Room C Room D Room E Room F
The possible amount of leaked refrigerant gas in rooms
A, B and C is 10 kg.
The possible amount of leaked refrigerant gas in rooms
D, E and F is 15 kg.
25
20
15
10
5
0
4- 22
Range below the
density limit
of 0.3 kg/m3
(countermeasures
not needed)
Range above
the density limit
of 0.3 kg/m3
(countermeasures
needed)
10
20
30
Total amount of refrigerant
kg
Test Run and Others
4. Installation Standards
4-2. Precautions for Installation Using New Refrigerant
4-2-1. Care regarding tubing
(1) Process tubing

Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seamless Pipes and Tubes.”

Tubing size: Be sure to use the sizes indicated in the table below.

Use a tube cutter when cutting the tubing, and be sure to remove any flash. This also applies to distribution
joints (optional).

When bending tubing, use a bending radius that is 4 times the outer diameter of the tubing or larger.
CAUTION
Use sufficient care in handling the tubing. Seal the tubing ends with
caps or tape to prevent dirt, moisture, or other foreign substances
from entering. These substances can result in system malfunction.
Unit: mm
Material
Copper tube
O
Outer diameter
6.35
9.52
12.7
15.88
19.05
Wall thickness
0.8
0.8
0.8
1.0
1.0
(2) Prevent impurities including water, dust and oxide from entering the tubing. Impurities can cause R410A
refrigerant deterioration and compressor defects. Due to the features of the refrigerant and refrigerating
machine oil, the prevention of water and other impurities becomes more important than ever.
4-2-2. Be sure to recharge the refrigerant only in liquid form.
(1) Since R410A is a non-azeotrope, recharging the refrigerant in gas form can lower performance and cause
defects of the unit.
(2) Since refrigerant composition changes and performance decreases when gas leaks, collect the remaining
refrigerant and recharge the required total amount of new refrigerant after fixing the leak.
4-2-3. Different tools required
4
(1) Tool specifications have been changed due to the characteristics of R410A.
Some tools for R22- and R407C-type refrigerant systems cannot be used.
Item
R407C tools
New compatible
tool? with R410A?
Manifold gauge
Remarks
Manifold gauge
Yes
No
Types of refrigerant, refrigerating machine oil, and
pressure gauge are different.
Charge hose
Yes
No
To resist higher pressure, material must be changed.
Vacuum pump
Yes
Yes
Use a conventional vacuum pump if it is equipped
with a check valve. If it has no check valve,
purchase and attach a vacuum pump adapter.
Leak detector
Yes
No
Leak detectors for CFC and HCFC that
react to chlorine do not function because
R410A contains no chlorine. Leak detector
for HFC134a can be used for R410A.
Flaring oil
Yes
No
For systems that use R22, apply mineral oil (Suniso oil)
to the flare nuts on the tubing to prevent refrigerant
leakage. For machines that use R407C or R410A, apply
synthetic oil (ether oil) to the flare nuts.
* Using tools for R22 and R407C and new tools for R410A together can cause defects.
4- 23
Vacuum pump
Outlet
Inlet
Test Run and Others
4. Installation Standards
(2) Use R410A exclusive cylinder only.
Valve
Single-outlet valve
(with siphon tube)
Liquid refrigerant should be recharged
with the cylinder standing on end as
shown.
Liquid
4
4- 24
Via Varese, 90 - 21013 Gallarate - Va - Italy
Tel. +39 0331 755111 - Fax +39 0331 776240
www.argoclima.com