Panasonic U-8ME1E81 User manual

85464849305004 REFERENCE NO.SM830205-04
TEST RUN SERVICE MANUAL
2WAY VRF SYSTEM
Model No.
SM830205-012WAYSYSTEM.indb1 2012/04/0716:35:19
Order No. SBPAC1307003CE
Outdoor Unit
ME1
8HP
U-8ME1E81
10HP
U-10ME1E81
16HP
U-16ME1E81
18HP
U-18ME1E81
20HP
U-20ME1E81
12HP
U-12ME1E81
14HP
U-14ME1E81
Class
Model Name
Class
73 106 140 224 280
E1
High Static Pressure
Ducted
Indoor Unit
Class 15 22
U1
4-Way Cassette S-22MU1E5
S-22MU1E51
L1
2-Way Cassette S-22ML1E5
D1
1-Way Cassette
F1
Low Silhouette Ducted S-22MF1E5
T1
M1
Ceiling
K1
Wall Mounted S-22MK1E5
R1
Concealed Floor
Standing S-22MR1E5
P1
Floor Standing S-22MP1E5
Y1
4-Way Cassette 60×60 S-22MY1E5
F2
Low Silhouette Ducted S-22MF2E5
Slim Low Static Ducted S-22MM1E5S-15MM1E5
28
S-28MU1E5
S-28MU1E51
S-28ML1E5
S-28MF1E5
S-28MD1E5
S-28MK1E5
S-28MR1E5
S-28MP1E5
S-28MY1E5
S-28MF2E5
S-28MM1E5
36
S-36MU1E5
S-36MU1E51
S-36ML1E5
S-36MF1E5
S-36MD1E5
S-36MK1E5
S-36MR1E5
S-36MP1E5
S-36MY1E5
S-36MF2E5
S-36MM1E5
S-36MT1E5
45
S-45MU1E5
S-45MU1E51
S-45ML1E5
S-45MF1E5
S-45MD1E5
S-45MK1E5
S-45MR1E5
S-45MP1E5
S-45MY1E5
S-45MF2E5
S-45MM1E5
S-45MT1E5
56
S-56MU1E5
S-56MU1E51
S-56ML1E5
S-56MF1E5
S-56MD1E5
S-56MK1E5
S-56MR1E5
S-56MP1E5
S-73ME1E5 S-106ME1E5 S-140ME1E5 S-224ME1E5
S-224ME1E5A S-280ME1E5
S-56MY1E5
S-56MF2E5
S-56MM1E5
S-56MT1E5
60
S-60MU1E51
S-60MF2E5
73
S-73MU1E5
S-73MU1E51
S-73ML1E5
S-73MF1E5
S-73MD1E5
S-73MK1E5
S-71MR1E5
S-71MP1E5
S-73MF2E5
S-73MT1E5
90
S-90MU1E51
S-90MF1E5
S-90MF2E5
106
S-106MU1E5
S-106MU1E51
S-106MF1E5
S-106MK1E5
S-106MF2E5
S-106MT1E5
140
S-140MU1E5
S-140MU1E51
S-140MF1E5
S-140MF2E5
S-140MT1E5
160
S-160MU1E5
S-160MU1E51
S-160MF1E5
K2
Wall Mounted S-22MK2E5 S-28MK2E5 S-36MK2E5
Y2
4-Way Cassette 60×60 S-22MY2E5 S-28MY2E5 S-36MY2E5 S-45MY2E5 S-56MY2E5
S-160MF2E5
SM830205-04_2WAY_VRF_Euro.indb 1 15/01/06 17:34:50

i
i
IMPORTANT!
Please Read Before Starting
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.
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 the U-8ME1E81 outdoor unit that is connected
to a 16 A distribution network.
This equipment complies with EN/IEC 61000-3-12
provided that the short-circuit power Ssc is greater than
or equals to the values corresponding to each model as
shown in the table below at the interface point between
the user’s supply and the public system.
It is the responsibility of the installer or user of the
equipment to ensure; by consultation with the distribution
network operator if necessary that the equipment is
connected only to supply with a short-circuit power Ssc
greater than or equals to the values corresponding to
each model as shown in the table below.
U-10ME1E81U-12ME1E81U-14ME1E81U-16ME1E81U-18ME1E81U-20ME1E81
U-10ME1E81U-12ME1E81U-14ME1E81U-16ME1E81U-18ME1E81U-20ME1E81
Ssc
1,150 kVA1,550 kVA 1,550 kVA1,550 kVA 1,550 kVA 1,550 kVA
This equipment complies with EN/IEC 61000-3-11
provided that the system impedance Zmax is less than
or equal to the values corresponding to each model as
shown in the table below at the interface point between
the user’s supply and the public system. Consult with
the supply authority for the system impedance Zmax.
Zmax
— 0.290 0.290 0.290 0.290 0.290
Pay close attention to all warning and caution notices
given in this manual.
WARNING
This symbol refers to a hazard or unsafe
practice which can result in severe
personal injury or death.
CAUTION
This symbol refers to a hazard or
unsafe practice which can result in
personal injury or product or property
damage.
If Necessary, Get Help
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.
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including
failure to follow the instructions in this document.
SPECIAL PRECAUTIONS
WARNING When Wiring
ELECTRICAL SHOCK CAN
CAUSE SEVERE PERSONAL
INJURY OR DEATH.
ONLY A QUALIFIED,
EXPERIENCED ELECTRICIAN
SHOULD ATTEMPT TO WIRE
THIS SYSTEM.
•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.
• Connect all wiring tightly. Loose wiring
may cause overheating at connection
points and a possible fire hazard.
•Provide a power outlet to be used
exclusively for each unit.
•ELCB must be incorporated in the fixed
wiring.Circuit breaker must be
incorporated in the fixed wiring in
accordance with the wiring regulations.
U-8ME1E81 U-10ME1E81 U-12ME1E81 U-14ME1E81
Circuit
breaker 25 A 25 A 35 A 35 A
U-16ME1E81U-18ME1E81U-20ME1E81
Circuit
breaker 45 A 50 A 50 A
•Provide a power outlet exclusively for
each unit, and full disconnection means
having a contact separation in all poles
must be incorporated in the fixed wiring
in accordance with the wiring rules.
•To prevent possible hazards from
insulation failure, the unit must be
grounded.
ii
…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
WARNING
• When performing piping work do
not mix air except for specified
refrigerant (R410A) in refrigeration
cycle. It causes capacity down,
and risk of explosion and injury
due to high tension inside the
refrigerant cycle.
•
•
Refrigerant gas leakage may
cause fire.
Do not add or replace refrigerant
other than specified type. It may
cause product damage, burst and
injury, etc.
•
•
•
• 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.
•
•
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.
Keep all tubing runs as short as
possible.
Use the flare method for connecting
tubing.
Check carefully for leaks before
starting the test run.
Do not leak refrigerant while piping
work for an installation or
re-installation, and while repairing
refrigeration parts.
Handle liquid refrigerant carefully as it
may cause frostbite.
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.
When Installing…
Select an installation location which is
rigid and strong enough to support or
hold the unit, and select a location for
easy maintenance.
…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.
CAUTION
Keep the fire alarm and the air
outlet at least 1.5 m away from the
unit.
…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.
SM830205-04_2WAY_VRF_Euro.indb 2 15/01/06 17:34:51

ii
i
IMPORTANT!
Please Read Before Starting
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.
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 the U-8ME1E81 outdoor unit that is connected
to a 16 A distribution network.
This equipment complies with EN/IEC 61000-3-12
provided that the short-circuit power Ssc is greater than
or equals to the values corresponding to each model as
shown in the table below at the interface point between
the user’s supply and the public system.
It is the responsibility of the installer or user of the
equipment to ensure; by consultation with the distribution
network operator if necessary that the equipment is
connected only to supply with a short-circuit power Ssc
greater than or equals to the values corresponding to
each model as shown in the table below.
U-10ME1E81U-12ME1E81U-14ME1E81U-16ME1E81U-18ME1E81U-20ME1E81
U-10ME1E81U-12ME1E81U-14ME1E81U-16ME1E81U-18ME1E81U-20ME1E81
Ssc
1,150 kVA1,550 kVA 1,550 kVA1,550 kVA 1,550 kVA 1,550 kVA
This equipment complies with EN/IEC 61000-3-11
provided that the system impedance Zmax is less than
or equal to the values corresponding to each model as
shown in the table below at the interface point between
the user’s supply and the public system. Consult with
the supply authority for the system impedance Zmax.
Zmax
— 0.290 0.290 0.290 0.290 0.290
Pay close attention to all warning and caution notices
given in this manual.
WARNING
This symbol refers to a hazard or unsafe
practice which can result in severe
personal injury or death.
CAUTION
This symbol refers to a hazard or
unsafe practice which can result in
personal injury or product or property
damage.
If Necessary, Get Help
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.
In Case of Improper Installation
The manufacturer shall in no way be responsible for
improper installation or maintenance service, including
failure to follow the instructions in this document.
SPECIAL PRECAUTIONS
WARNING When Wiring
ELECTRICAL SHOCK CAN
CAUSE SEVERE PERSONAL
INJURY OR DEATH.
ONLY A QUALIFIED,
EXPERIENCED ELECTRICIAN
SHOULD ATTEMPT TO WIRE
THIS SYSTEM.
•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.
• Connect all wiring tightly. Loose wiring
may cause overheating at connection
points and a possible fire hazard.
•Provide a power outlet to be used
exclusively for each unit.
•ELCB must be incorporated in the fixed
wiring.Circuit breaker must be
incorporated in the fixed wiring in
accordance with the wiring regulations.
U-8ME1E81 U-10ME1E81 U-12ME1E81 U-14ME1E81
Circuit
breaker 25 A 25 A 35 A 35 A
U-16ME1E81U-18ME1E81U-20ME1E81
Circuit
breaker 45 A 50 A 50 A
•Provide a power outlet exclusively for
each unit, and full disconnection means
having a contact separation in all poles
must be incorporated in the fixed wiring
in accordance with the wiring rules.
•To prevent possible hazards from
insulation failure, the unit must be
grounded.
ii
…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
WARNING
• When performing piping work do
not mix air except for specified
refrigerant (R410A) in refrigeration
cycle. It causes capacity down,
and risk of explosion and injury
due to high tension inside the
refrigerant cycle.
•
•
Refrigerant gas leakage may
cause fire.
Do not add or replace refrigerant
other than specified type. It may
cause product damage, burst and
injury, etc.
•
•
•
• 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.
•
•
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.
Keep all tubing runs as short as
possible.
Use the flare method for connecting
tubing.
Check carefully for leaks before
starting the test run.
Do not leak refrigerant while piping
work for an installation or
re-installation, and while repairing
refrigeration parts.
Handle liquid refrigerant carefully as it
may cause frostbite.
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.
When Installing…
Select an installation location which is
rigid and strong enough to support or
hold the unit, and select a location for
easy maintenance.
…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.
CAUTION
Keep the fire alarm and the air
outlet at least 1.5 m away from the
unit.
…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.
SM830205-04_2WAY_VRF_Euro.indb 3 15/01/06 17:34:51

5
2. The standards for minimum room volume are as follows.
(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).
(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.
3. The minimum indoor floor space compared with the
amount of refrigerant is roughly as follows: (When the
ceiling is 2.7 m high)
40.5
54.0
27.0
13.5
0.0
20100 30 40 60 70 80 90 10050
67.5
81.0
94.5
108.0
121.5
135.0
148.5
162.0
175.5
189.0
202.5
216.0
229.5
243.0
256.0
270.0
m2m3
15
10
5
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
283.5
297.0
310.5
324.0
337.5
kg
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.
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).
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:
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.
e.g., charged
amount (10 kg)
Indoor unit
Outdoor unit
e.g., charged
amount (15 kg)
Room A Room B Room C Room D Room E Room F
Outdoor unit
Refrigerant tubing
Indoor unit
Mechanical ventilation device – Gas leak detector
Refrigerant tubing
Outdoor unit
Indoor unit
Very
small
room
Small
room
Medium
room
Large room
Total amount of refrigerant
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)
Min. indoor volume
Min. indoor floor area (when the ceiling is 2.7 m high)
2WAYEng.indb5 2014/03/1115:03:16
iii
ii
CAUTION
•Do not touch the air inlet or the
sharp aluminum fins of the
outdoor unit. You may get
injured.
• 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.
• 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.
Others
CAUTION
•
•
•
Do not touch the air inlet or
the sharp aluminum fins of
the outdoor unit. You may
get injured.
Do not sit or step on the unit,
you may fall down accidentally.
Do not stick any object into
the FAN CASE.
You may be injured and the
unit may be damaged.
When Servicing
•
•
•
Turn the power OFF at the main
power box (mains), wait at least
10 minutes until it is discharged,
then open the unit to check or repair
electrical parts and wiring.
Keep your fingers and clothing away
from any moving parts.
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.
WARNING
•
•
Do not clean inside the indoor and
outdoor units by users. Engage
authorized dealer or specialist for
cleaning.
•This product must not be modified
or disassembled under any
circumstances. Modified or
disassembled unit may cause fire,
electric shock or injury.
In case of malfunction of this
appliance, do not repair by
yourself. Contact to the sales
dealer or service dealer for a
repair.
SM830205-04_2WAY_VRF_Euro.indb 4 15/01/06 17:34:51

5
2. The standards for minimum room volume are as follows.
(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).
(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.
3. The minimum indoor floor space compared with the
amount of refrigerant is roughly as follows: (When the
ceiling is 2.7 m high)
40.5
54.0
27.0
13.5
0.0
20100 30 40 60 70 80 90 10050
67.5
81.0
94.5
108.0
121.5
135.0
148.5
162.0
175.5
189.0
202.5
216.0
229.5
243.0
256.0
270.0
m2m3
15
10
5
0
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
283.5
297.0
310.5
324.0
337.5
kg
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.
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).
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:
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.
e.g., charged
amount (10 kg)
Indoor unit
Outdoor unit
e.g., charged
amount (15 kg)
Room A Room B Room C Room D Room E Room F
Outdoor unit
Refrigerant tubing
Indoor unit
Mechanical ventilation device – Gas leak detector
Refrigerant tubing
Outdoor unit
Indoor unit
Very
small
room
Small
room
Medium
room
Large room
Total amount of refrigerant
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)
Min. indoor volume
Min. indoor floor area (when the ceiling is 2.7 m high)
2WAYEng.indb5 2014/03/1115:03:16
iv
ii
CAUTION
•Do not touch the air inlet or the
sharp aluminum fins of the
outdoor unit. You may get
injured.
• 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.
• 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.
Others
CAUTION
•
•
•
Do not touch the air inlet or
the sharp aluminum fins of
the outdoor unit. You may
get injured.
Do not sit or step on the unit,
you may fall down accidentally.
Do not stick any object into
the FAN CASE.
You may be injured and the
unit may be damaged.
When Servicing
•
•
•
Turn the power OFF at the main
power box (mains), wait at least
10 minutes until it is discharged,
then open the unit to check or repair
electrical parts and wiring.
Keep your fingers and clothing away
from any moving parts.
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.
WARNING
•
•
Do not clean inside the indoor and
outdoor units by users. Engage
authorized dealer or specialist for
cleaning.
•This product must not be modified
or disassembled under any
circumstances. Modified or
disassembled unit may cause fire,
electric shock or injury.
In case of malfunction of this
appliance, do not repair by
yourself. Contact to the sales
dealer or service dealer for a
repair.
SM830205-04_2WAY_VRF_Euro.indb 5 15/01/06 17:34:51

Precautions for Installation Using New Refrigerant
1. Care regarding tubing
1-1. Process tubing
●Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seamless Pipes and Tubes.”
For tubes of ø22.22 or larger, use C1220 T-1/2H material or H material, and do not bend the 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 O
Copper tube Outer diameter 6.35 9.52 12.7 15.88 19.05
Wall thickness 0.8 0.8 0.8 1.0 1.2
Unit: mm
Material 1/2 H, H
Copper tube Outer diameter 22.22 25.4 28.58 31.75 38.1 41.28
Wall thickness 1.0 1.0 1.0 1.1 over 1.35 over 1.45
1-2. 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.
2. Be sure to recharge the refrigerant only in liquid form.
2-1. Since R410A is a non-azeotrope, recharging the refrigerant in gas form can lower performance and cause defects in the unit.
2-2. 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.
3. Different tools required
3-1. Tool specifications have been changed due to the characteristics of R410A.
Some tools for R22- and R407C-type refrigerant systems cannot be used.
Item New tool?
R407C tools
compatible
with R410A?
Remarks
Manifold gauge
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 detectors for HFC134a can be
used for R410A.
Vacuum pump
Outlet
Inlet
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.
3-2. Use R410A exclusive cylinder only.
Single-outlet valve
(with siphon tube)
Liquid refrigerant should be
recharged with the cylinder
standing on end as shown.
Valve
Liquid
2WAYEng.indb6 2014/03/1115:03:17
v
SM830205-04_2WAY_VRF_Euro.indb 6 15/01/06 17:34:51

1. Address Settings
(Outdoor Units)................................................................................................................... 1-1
1. Test Run...............................................................................................................1-2
2. Settings of Indoor Unit Control PCB ....................................................................1-3
3. Auto Address Setting ...........................................................................................1-5
2. Remote Controller Functions ............................................................................................ 2-1
1. Remote Controller Test Run Settings...................................................................2-2
2. Simple Settings Function .....................................................................................2-3
3. Detailed Settings Function...................................................................................2-7
4. Remote Controller Servicing Functions ............................................................. 2-22
3. Trouble Diagnosis ............................................................................................................... 3-1
1. Contents of Remote Controller Switch Alarm Display..........................................3-2
2. Outdoor Unit Control Panel LED Display .............................................................3-4
3. Remote Controller Servicing Functions ...............................................................3-5
4. 2WAY Alarm Codes ............................................................................................3-8
5. Blinking Inspection Display ................................................................................ 3-29
6. Inspection and Characteristics of Parts .............................................................3-31
7. Test Pin .............................................................................................................. 3-33
8. Symptom: Thermostat in OFF continues or cycles OFF & ON too frequently ....... 3-34
4. PCB Settings....................................................................................................................... 4-1
1. Outdoor Unit Control PCB ...................................................................................4-2
5. Self-Diagnostics Function Table........................................................................................ 5-1
1. Self-Diagnostics Function Table...........................................................................5-2
6. Service Checker.................................................................................................................. 6-1
1. Outdoor Unit Maintenance Remote Controller.....................................................6-2
Contents
Precautions for Installation Using New Refrigerant
1. Care regarding tubing
1-1. Process tubing
●Material: Use C1220 phosphorous deoxidized copper specified in JIS H3300 “Copper and Copper Alloy Seamless Pipes and Tubes.”
For tubes of ø22.22 or larger, use C1220 T-1/2H material or H material, and do not bend the 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 O
Copper tube Outer diameter 6.35 9.52 12.7 15.88 19.05
Wall thickness 0.8 0.8 0.8 1.0 1.2
Unit: mm
Material 1/2 H, H
Copper tube Outer diameter 22.22 25.4 28.58 31.75 38.1 41.28
Wall thickness 1.0 1.0 1.0 1.1 over 1.35 over 1.45
1-2. 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.
2. Be sure to recharge the refrigerant only in liquid form.
2-1. Since R410A is a non-azeotrope, recharging the refrigerant in gas form can lower performance and cause defects in the unit.
2-2. 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.
3. Different tools required
3-1. Tool specifications have been changed due to the characteristics of R410A.
Some tools for R22- and R407C-type refrigerant systems cannot be used.
Item New tool?
R407C tools
compatible
with R410A?
Remarks
Manifold gauge
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 detectors for HFC134a can be
used for R410A.
Vacuum pump
Outlet
Inlet
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.
3-2. Use R410A exclusive cylinder only.
Single-outlet valve
(with siphon tube)
Liquid refrigerant should be
recharged with the cylinder
standing on end as shown.
Valve
Liquid
2WAYEng.indb6 2014/03/1115:03:17
vi
SM830205-04_2WAY_VRF_Euro.indb 7 15/01/06 17:34:51

vii
– MEMO –
SM830205-04_2WAY_VRF_Euro.indb 8 15/01/06 17:34:51

1-1
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Contents
1. Address Settings
(Outdoor Units)
1. Test Run...............................................................................................................................1-2
2. Settings of Indoor Unit Control PCB.................................................................................1-3
3. Auto Address Setting .........................................................................................................1-5
SM830205-04_2WAY_VRF_Euro.indb 1 15/01/20 15:15:21

1-2
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Test Run Procedure
*1
*2
*3 *3
*2
Items to Check Before the Test Run
1. Turn the remote power switch on at least 5
hours before the test, in order to energize the
crankcase heater.
2. After performing the leak inspection, applying
vacuum, and performing refrigerant charge for
the tubing which is connected on-site, fully open
the outdoor unit service valve. However if only
one outdoor unit is installed, a balance tube is
not used. Therefore, leave the valve fully closed.
3. When replacing the control PCB, be sure that
the settings on the new PCB match those on the
old PCB.
4. 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.
5. These settings are not made on the indoor unit
PCB.
Recheck the items to check before the test run.
Have the outdoor sub
units been connected?
Set the unit address.
Set the No. of outdoor units.
Set the No. of indoor units.
YES
YES
Set the system address.
When multiple outdoor main units exist, disconnect the
terminals extended from the shorted plugs (CN67) at
all outdoor main unit PCBs except for 1. Alternatively,
move the sockets to the OPEN side.
Are the inter-unit control
wires connected to more than 1
refrigerant system?
Is it possible to turn ON the
power only for the 1 refrigerant system where
the test run will be performed?
Will automatic address setting be
performed in Heating mode?
Is it OK to start the
compressors?
Is it OK to start
the compressors?
Turn ON the indoor and
outdoor unit power.
Short-circuit the cooling side of the
mode change pin (CN40) on the
outdoor main unit PCB.
At the same time, short-circuit the
automatic address pin (CN30) for 1
second or longer, then release it.
Short-circuit the automatic
address pin (CN30) on the
outdoor main unit PCB for 1
second or longer, then release it.
Note: It is not necessary to remove
the socket that is used to short-
circuit the terminal plugs from
the outdoor sub unit PCBs.
Start indoor and outdoor unit
heating operation.
LED 1 and 2 blink alternately.
Start indoor and outdoor unit
cooling operation.
LED 1 and 2 blink alternately.
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
Turn ON the indoor and
outdoor unit power.
CASE 3B
CASE 2
Make necessary
corrections.
Make necessary
corrections.
Turn OFF the indoor
and outdoor unit.
Turn OFF the
indoor and outdoor
unit power.
Check the alarm
contents.
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.
Refer to “Table of
Self-Diagnostic Functions and
Description of Alarm Displays.”
Are LEDs 1 and 2 on the
outdoor unit PCB OFF?
LED 1 and 2 blink alternately
(about 2 or 3 minutes).
Short-circuit the automatic
address pin (CN30) on the
outdoor main unit PCB for 1
second or longer, then release it.
Turn ON the indoor and outdoor
unit power for that refrigerant
system only.
CASE 1
*1
The unit with the
unit No. set to 1
is the main unit.
All other units
are sub units.
CASE 3A
NO
NO
Refer to Fig. 4-1
(Check the link wiring.)
<Outdoor unit control PCB>
Unit No. setting switch
(SW3 and SW4)
<Outdoor unit control PCB>
Unit No. setting switch (SW6)
<Outdoor unit control PCB>
Unit No. setting switch (SW5)
<Outdoor unit control PCB>
Unit No. setting switch
(SW1 and SW2)
NO
NO
NO
YES
NO
NO
YES
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.
Check and make corrections according
to “Table of Self-Diagnostic Functions.”
Does system
operate?
Return remote control to normal mode.
End test run.
YES
YES
1. Test Run
SM830205-04_2WAY_VRF_Euro.indb 2 15/01/20 15:15:22

1-3
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
2. Settings of Indoor Unit Control PCB
Examples of the No. of indoor units settings (SW4, SW3)
No. of indoor units
Indoor unit setting (SW4)
(3P DIP switch, blue)
10 20 30
Indoor unit setting (SW3)
(Rotary switch, red)
1otteSFFOllA)gnittesyrotcaf(tinu1
1otteSNO1stinu11
1otteSNO2stinu12
1otteSNO3stinu13
0otteSNO3&1stinu04
8otteSNO3&2stinu85
4otteSNOllAstinu46
Examples of refrigerant circuit (R.C.) address settings (required when link wiring is used) (SW2, SW1)
System address No.
System address (SW2)
(2P DIP switch, black)
10 20
System address (SW1)
(Rotary switch, black)
1otteSFFOhtoB)gnittesyrotcaf(1metsyS
1otteSNO111metsyS
1otteSNO212metsyS
0otteSNO2&103metsyS
Examples of the No. of outdoor units settings (SW6)
No. of outdoor units Outdoor unit setting (SW6)
(3P DIP switch, blue)
1 unit (factory setting) 1 ON
2 units2ON
3 units1& 2 ON
Address setting of main outdoor unit (SW5)
Unit No. setting Address setting of outdoor unit (SW5)
(3P DIP switch, blue)
Unit No. 1 (main unit)
(factory setting) 21
3
Address setting of sub outdoor unit
Unit No. setting Address setting of outdoor unit (SW5)
(3P DIP switch, blue)
Unit No. 2 (sub unit) 2 ON
Unit No. 3 (sub unit) 1 & 2 ON
The sub unit control PCB contains the same switches as the main unit control PCB for No. of indoor units, No. of outdoor units,
and system address. However it is not necessary to set these switches.
123
123
123
123
123
123
123
8
4
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
OFF
OFF
OFF
OFF
2
1
2
1
12
2
1
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
ON
ON
2
3
2
1
1
3
12 3
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON
OFF
ON
ON
3
12
12
3
OFF
OFF
ON
ON
ON
ON
SM830205-04_2WAY_VRF_Euro.indb 3 15/01/20 15:15:22

1-4
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
2WAY SYSTEM
Address Settings
2. Settings of Indoor Unit Control PCB
SW8
SW5
SW6
CN40
CN22
CN23
CN24
CN27
CN30
CN28
CN34 CN33
SW2
SW4
SW1
SW7
CN67
CN73
LED1
LED2
SW3
Name And Function Of Each Switch On Outdoor Unit Control PC Board
• Mode Select pin
(3P, Black) (CN40) Changes to the cooling or heating mode. (Main outdoor unit is only usable.)
During normal driveWhen the cooling side is short-circuit, all indoor units change to cooling mode.
When the heating side is short-circuit, changes to all heating mode.
• Auto Address setting pin
(2P, Black) (CN30)
Short-circuit for 1 second or longer. When opened, the auto address mode starts.
When the short-circuit remains in effect for more than 1 second during auto address, the auto
address is interrupted.
• Test Run pin
(2P, Black) (CN23)
When set to short-circuit, changes to the test run mode.
(The test run mode is automatically cancelled after an hour.)
When short-circuit is cancelled, the test run mode is cancelled.
• RC socket
(3P, Blue) (CN73)
Connects to the outdoor unit maintenance remote control and the content of an alarm message
will be checked.
• Drive pin
(2P, Black) (CN27)
When the pulse signal applied after short-circuit, all indoor units within the same series will be
operated.
• Stop pin
(2P, Black) (CN28)
When the pulse signal applied after short-circuit, all indoor units within the same series will be
stopped.
(When set to short-circuit, the remote control from the indoor unit can not be operated.)
• Vacuum pin
(2P, Black) (CN24) Used for vacuuming the outdoor unit.
Socket for Snow Area
• Snow socket
(3P, Red) (CN34) Used for installing the snow sensor.
Silent Socket
• Socket for silent mode
(2P, White) (CN33) Used for installing the external timer for the silent mode.
2. Settings of Indoor Unit Control PCB
SM830205-04_2WAY_VRF_Euro.indb 4 15/01/20 15:15:22

1-5
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
3. Auto Address Setting
Auto Address Setting
Basic wiring diagram: Example (1)
• If link wiring is not used
(The inter-unit control wirings are not connected to multiple refrigerant systems.)
Indoor unit addresses can be set without operating the compressors.
1
2
33
2
1
1
3
2
1
2
2
1
3
3
2
1
(SW6)(SW5)
(SW4)
(SW3)
(SW2)(SW1)
1-1 1-2 1-3 1-10
(SW5) (SW5)
ON
Case 1
(1) Automatic Address Setting from the Outdoor Unit
1. To set the number of outdoor units, on the outdoor main unit control PCB set the No. of outdoor units DIP switch (SW6) to
1 2 3
(3 units), and set the unit No. DIP switch (SW5) to
2 3
1
(unit No. 1 – main outdoor unit).
2. On the No. 2 (sub) unit control PCB, set the unit No. switch (SW5) to
3 2
1
(unit No. 2).
On the No. 3 (sub) unit control PCB, set the unit No. switch (SW5) to
1 2
3
(unit No. 3).
3. On the outdoor main unit control PCB, check that the system address rotary switch (SW1) is set to “1” and that the DIP
switch (SW2) is set to
1
2
“0.” (These are the settings at the time of factory shipment.)
4. To set the number of indoor units that are connected to the outdoor unit to 10 on the outdoor main unit control PCB, set the
No. of indoor units DIP switch (SW4) to
2 3 1
“1,” and set the rotary switch (SW3) to “0.”
5. Turn ON the power to the indoor and outdoor units.
6. On the outdoor main unit control PCB, short-circuit the automatic address pin (CN30) for 1 second or longer, then release it.
(Communication for automatic address setting begins.)
* To cancel, again short-circuit the automatic address pin (CN30) for 1 second or longer, then release it.
The LED that indicates that automatic address setting is in progress turns OFF and the process is stopped. Be sure
to perform automatic address setting again.
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF. )
7. Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 to 5, then use the remote controller and
complete automatic address setting.
Refer to “Automatic Address Setting from the Remote Controller.”
No. 1 (main outdoor unit)
)tinubus(3.oN)tinubus(2.oN
Unit
No. 3
(Sub)
Unit
No. 2
(Sub)
Unit
No. 1
(Main)
Outdoor Unit
Indoor Unit
Remote controller
Remote control
communication wiring
Inter-outdoor unit
control wiring
Inter-unit control wiring
Inter-outdoor unit
control wiring
settings
sgnittessgnittes
No. of indoor units
(10 units setting)
System address
(system 1 setting)
No. of
outdoor
units (3 units
setting)
Unit number
setting
(Unit No. 1)
Unit
number
setting
(Unit No. 2)
Unit
number
setting
(Unit No. 3)
ON
ON ON
ON
NONO
ON
ON ON
ON
NON
O
OFF
OFF OFF
OFF
FFOFFO
Fig. 1-1
ON
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
SM830205-04_2WAY_VRF_Euro.indb 5 15/01/20 15:15:22

1-6
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
3. Auto Address Setting
Basic wiring diagram: Example (2)
• If link wiring is used * See the section “Adjustment of Termination Resistor (Plug)”.
1-1 1-2
9-22-21-2
31-13-1
2
1 3
1
2
3
1
2
3
3
2
1
1
2
3
1
2
2
1
3
1
3
2
1
2
2
1
3
3
2
1
(SW6) (SW5)
(SW4)
(SW3)
(SW2)(SW1)
(SW5)
(SW6) (SW5)
(SW4)
(SW3)
(SW2)(SW1)
3
)5WS()5WS(
No. 1 (main outdoor unit) settings
No. 1 Refrigerant circuit
No. 2
Refrigerant
circuit
No. 2 (sub unit)
settings
No. 3 (sub unit)
settings
Unit
number
setting
(unit No. 3)
Unit
No. 3
(Sub)
Unit
No. 2
(Sub)
Unit
No. 1
(Main)
Outdoor unit
system 1
Inter-outdoor unit control wiring
Inter-unit control wiring
Remote control
communication wiring
Indoor unit
Remote
controller
No. 1 (main unit) settings
System address
(system 2 setting)
No. of
outdoor
units (2 units
setting)
Unit number
setting (unit
No. 1)
No. 2 (sub unit) settings
Unit number
setting (unit
No. 2)
Unit
No. 2
(Sub)
Unit
No. 1
(Main)
Outdoor unit
system 2
To other system
link wiring
Indoor unit
Inter-unit control wiring
Remote control
communication wiring
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.
• Indoor and outdoor unit power cannot be turned ON for each system separately.
Automatic address setting in Heating mode
Automatic address setting in Cooling mode Case 3B
Fig. 1-2
Case 3A
Case 2
Inter-outdoor unit control wiring
Remote
controller
No. of indoor units
(9 units setting)
Inter-outdoor unit control wiring
Unit
number
setting
(unit No. 2)
System address
(system 1 setting)
No. of
outdoor units
(3 units
setting)
No. of indoor units
(13 units setting)
ON
ON
ON
ON ON
ON
ON
ON ON
ON ON
ON
OFF
OFF
OFF OFF
OFF OFF
ON
ON
ON ON
ON
ON
ON
ON
OFF
OFF
OFF OFF
OFF
Unit
number
setting
(unit No. 1)
ON ON
SM830205-04_2WAY_VRF_Euro.indb 6 15/01/20 15:15:23

1-7
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Case 2 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 No. 1 (main) unit control PCB, set the unit No. switch (SW5) to 2
3 1
(unit No. 1).
On the No. 2 (sub) unit control PCB, set the unit No. switch (SW5) to
3
2
1
(unit No. 2).
On the No. 3 (sub) unit control PCB, set the unit No. switch (SW5) to
3 2 1
ON
(unit No. 3).
2. To set the number of outdoor units on the outdoor main unit control PCB, set the No. of outdoor units DIP switch (SW6) to
1
2
3
(3 units).
3. On the outdoor main unit control PCB, check that the system address rotary switch (SW1) is set to “1” and that the DIP
switch (SW2) is set to “0”
1 2
. (These are the settings at the time of factory shipment.)
4. To set the number of indoor units that are connected to the outdoor unit to 13 on the outdoor main unit control PCB, set the
No. of indoor units DIP switch (SW4) to “1”
2
3 1
, and set the rotary switch (SW3) to “3.”
5.
6.
Turn on power to all indoor and outdoor units in the system.
Short-circuit the automatic address pin at the outdoor main unit (CN30) for 1 second or longer, then release it.
(Communication for automatic address setting begins.)
* To cancel, again short-circuit the automatic address pin (CN30) for 1 second or longer, then release it. The LED
that indicates automatic address setting is in progress turns OFF and the process is stopped. Be sure to perform
automatic address setting again.
(Automatic address setting is completed when LEDs 1 and 2 on the outdoor main unit control PCB turn OFF.)
7.
way to complete automatic address settings for all systems.
8.
Next turn the power ON only for the indoor and outdoor units of the next (different) system. Repeat steps 1 – 5 in the same
Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 – 5, then use the remote controller and
complete automatic address setting.
Refer to “Automatic Address Setting from Remote Controller.”
ON
ON
ON
ON
ON
ON
ON
ON
OFF
OFF
OFF
3. Auto Address Setting
SM830205-04_2WAY_VRF_Euro.indb 7 15/01/20 15:15:24

1-8
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
1-8
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
3. Auto Address Setting
Case 3A 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 – 4 in the same way as for Case 2 .
5. Turn the indoor and outdoor unit power ON at all systems.
6. To perform automatic address setting in Heating mode , on the outdoor main unit control PCB in the refrigerant system
where you wish to set the addresses, short-circuit the automatic address pin (CN30) for 1 second or longer, then release it.
(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 (CN30) for 1 second or longer, then release it.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
Be sure to perform automatic address setting again.
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the main unit control PCB
turn OFF.)
7. At the outdoor main unit in the next (different) system, short-circuit the automatic address pin (CN30) for 1 second or
longer, then release it.
(Repeat the same steps to complete automatic address setting for all units.)
8. Operation from the remote controllers is now possible.
* To perform automatic address setting from the remote controller, perform steps 1 – 5, then use the remote controller and
complete automatic address setting.
Refer to “Automatic Address Setting from Remote Controller.”
In case of the WHE system, this function does not work properly. Performor
Case 1 Case 2.
3. Auto Address Setting
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1-9
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
3. Auto Address Setting
1-9
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
3. Auto Address Setting
Case 3B 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
Perform steps 1 – 4 in the same way as for Case 2 .
Turn the indoor and outdoor unit power ON at all systems.
6.
5.
1.
To perform automatic address setting in Cooling mode , on the outdoor main unit control PCB in the refrigerant system
where you wish to set the addresses, short-circuit the MODE COOL pin (CN40). At the same time, short-circuit the
automatic address pin (CN30) for 1 second or longer, then release it. (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 (CN30) for 1 second or longer, then release it.
The LED that indicates automatic address setting is in progress turns OFF and the process is stopped.
Be sure to perform automatic address setting again.
(Automatic address setting is completed when the compressors stop and LEDs 1 and 2 on the outdoor main unit control
PCB turn OFF.)
7.
8.
At the outdoor main unit in the next (different) system, short-circuit the automatic address pin (CN30) for 1 second or
longer, then release it.
(Repeat the same steps to complete automatic address setting for all units.)
Operation from the remote controllers is now possible.
* Automatic address setting in Cooling mode cannot be done from the remote controller.
In case of the WHE system, this function does not work properly. Perform or
Case 1 Case 2.
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1-10
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
3. Auto Address Setting
2
3
4
5
6
7
8
3WAY SYSTEM
Address Settings
Adjustment of Termination Resistor (Plug)
Communication error will occur if improper adjustment is made.
• When connecting the centralized control system, it is necessary to adjust the termination resistor (terminal plug: CN67).
Even if no connection is made, confirmation is required for VRF systems.
• Termination resistor is placed on the outdoor unit control PCB.
• Centralized control system: Intelligent Controller (CZ-256ESMC2)
System Controller (CZ-64ESMC2)
Schedule Timer (CZ-ESWC2)
ON/OFF Controller (CZ-ANC2)
P-AIMS Basic software (CZ-CSWKC2)
• If the termination resistor of this inter-outdoor unit control wiring is 1 refrigerant system, short-circuit 1 location (remains
unchanged at shipment).
If there are more than 2 refrigerant systems, short-circuit 2 locations (remains unchanged at shipment).
In order to stabilize communication, 2 short circuit locations shall be at both sides (remains unchanged at shipment).
Open-circuit the refrigerant systems except for 2 locations mentioned above.
More than 3 short circuit locations of the termination resistors are prohibited (remains unchanged at shipment).
• There is no necessary to adjust the termination resistor (short circuit remained at shipment) because VRF systems for
combination of sub outdoor units are not connected to the control wiring.
If link wiring is not used
Short-circuit 1 termination resistor plug of the unit No.1 main outdoor unit (remains unchanged at shipment).
Setting of terminal plug (CN67)
Unit No. 1 (Main) : short-circuit (at shipment)
Unit No. 2 (Sub) : short-circuit (at shipment)
Unit No. 3 (Sub) : short-circuit (at shipment)
1-1
1-2 1-3
1-10
CN67
Centralized
control
system
Unit
No. 1
(Main)
Unit
No. 2
(Sub)
Unit
No. 3
(Sub)
SHORT
Outdoor unit control PCB
Short-circuit 1 termination resistor plug (remains unchanged
at shipment).
Remote control
communication wiring
Remote controller
Outdoor unit
Indoor unit
Inter-outdoor unit
control wiring
Inter-outdoor unit
control wiring
Inter-unit control wiring
3. Auto Address Setting
SM830229-003WAYTESTRUN.indb11 2013/02/2318:38:19
2
3
4
5
6
7
8
3WAY SYSTEM
Address Settings
If link wiring is used
Short-circuit 2 termination resistors plug (remains unchanged at shipment).
In order to stabilize communication, 2 short circuit locations shall be at both sides (remains unchanged at shipment).
1-1 1-2 1-101-3
2-10
n-1 n-2
2-1 2-2 2-3
n-10n-3
Final Check
Be sure to check before operation.
Final check must be done under the conditions of inter-outdoor unit control wiring
connected to the centralized control system and the resistor between conductors
must be measured by a Megger. Check if it is showing between 30Ω and 120Ω.
If the resistance value is out of range, check adjustment of the termination resistor again.
Even if it is out of range, the problem is caused by wiring.
• Is the wiring connection properly completed?
• Are there any scratches or deterioration on the coverage?
Measure between conductors and also between wiring and ground by 500V Megger
insulation resistance tester. Make sure the Megger is showing more than 100MΩ.
When measuring, remove both ends of the wiring from the terminal board.
If not removed, it will be damaged. If it is less than 100MΩ, a new wiring connection
should be made.
•
Centralized
control
system
No. 1
Refrigerant
circuit
No. 2
Refrigerant
circuit
No. n
Refrigerant
circuit
Unit
No. 1
(Main)
Unit
No. 2
(Sub)
Unit
No. 3
(Sub)
Remote control
communication wiring
Outdoor unit
system 1
Indoor unit
Outdoor unit
system n
Inter-outdoor unit control wiring Inter-outdoor unit control wiring
Leave the socket that is
used to short-circuit the
terminal plug.
(CN67)
Between conductors
Between wiring and ground
Wire
Wire
Ground Ground
Wire
Wire
Inter-unit control wiring
Indoor unit
Unit
No. 1
(Main)
Unit
No. 2
(Sub)
Unit
No. 3
(Sub)
Remote control
communication wiring
Remote
controller
Remote
controller
Remote
controller
Outdoor unit
system 2
Indoor unit
Inter-outdoor control wiring Inter-outdoor unit control wiring
Move the sockets to the
“OPEN” side. (CN67)
Inter-unit control wiring
Unit
No. 1
(Main)
Unit
No. 2
(Sub)
Unit
No. 3
(Sub)
Remote control
communication wiring
Inter-outdoor unit control wiring Inter-outdoor unit control wiring
Leave the socket that is
used to short-circuit the
terminal plug.
(CN67)
Inter-unit control wiring
Setting of terminal plug (CN67)
Unit No. 1 (Main)
Unit No. 2 (Sub)
Unit No. 3 (Sub)
open-circuit
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
Refrigerant circuit No. No. 1 No. 2 to n-1 No. n
3. Auto Address Setting
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1-11
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
3. Auto Address Setting
2
3
4
5
6
7
8
3WAY SYSTEM
Address Settings
Adjustment of Termination Resistor (Plug)
Communication error will occur if improper adjustment is made.
• When connecting the centralized control system, it is necessary to adjust the termination resistor (terminal plug: CN67).
Even if no connection is made, confirmation is required for VRF systems.
• Termination resistor is placed on the outdoor unit control PCB.
• Centralized control system: Intelligent Controller (CZ-256ESMC2)
System Controller (CZ-64ESMC2)
Schedule Timer (CZ-ESWC2)
ON/OFF Controller (CZ-ANC2)
P-AIMS Basic software (CZ-CSWKC2)
• If the termination resistor of this inter-outdoor unit control wiring is 1 refrigerant system, short-circuit 1 location (remains
unchanged at shipment).
If there are more than 2 refrigerant systems, short-circuit 2 locations (remains unchanged at shipment).
In order to stabilize communication, 2 short circuit locations shall be at both sides (remains unchanged at shipment).
Open-circuit the refrigerant systems except for 2 locations mentioned above.
More than 3 short circuit locations of the termination resistors are prohibited (remains unchanged at shipment).
• There is no necessary to adjust the termination resistor (short circuit remained at shipment) because VRF systems for
combination of sub outdoor units are not connected to the control wiring.
If link wiring is not used
Short-circuit 1 termination resistor plug of the unit No.1 main outdoor unit (remains unchanged at shipment).
Setting of terminal plug (CN67)
Unit No. 1 (Main) : short-circuit (at shipment)
Unit No. 2 (Sub) : short-circuit (at shipment)
Unit No. 3 (Sub) : short-circuit (at shipment)
1-1
1-2 1-3
1-10
CN67
Centralized
control
system
Unit
No. 1
(Main)
Unit
No. 2
(Sub)
Unit
No. 3
(Sub)
SHORT
Outdoor unit control PCB
Short-circuit 1 termination resistor plug (remains unchanged
at shipment).
Remote control
communication wiring
Remote controller
Outdoor unit
Indoor unit
Inter-outdoor unit
control wiring
Inter-outdoor unit
control wiring
Inter-unit control wiring
3. Auto Address Setting
SM830229-003WAYTESTRUN.indb11 2013/02/2318:38:19
2
3
4
5
6
7
8
3WAY SYSTEM
Address Settings
If link wiring is used
Short-circuit 2 termination resistors plug (remains unchanged at shipment).
In order to stabilize communication, 2 short circuit locations shall be at both sides (remains unchanged at shipment).
1-1 1-2 1-101-3
2-10
n-1 n-2
2-1 2-2 2-3
n-10n-3
Final Check
Be sure to check before operation.
Final check must be done under the conditions of inter-outdoor unit control wiring
connected to the centralized control system and the resistor between conductors
must be measured by a Megger. Check if it is showing between 30Ω and 120Ω.
If the resistance value is out of range, check adjustment of the termination resistor again.
Even if it is out of range, the problem is caused by wiring.
• Is the wiring connection properly completed?
• Are there any scratches or deterioration on the coverage?
Measure between conductors and also between wiring and ground by 500V Megger
insulation resistance tester. Make sure the Megger is showing more than 100MΩ.
When measuring, remove both ends of the wiring from the terminal board.
If not removed, it will be damaged. If it is less than 100MΩ, a new wiring connection
should be made.
•
Centralized
control
system
No. 1
Refrigerant
circuit
No. 2
Refrigerant
circuit
No. n
Refrigerant
circuit
Unit
No. 1
(Main)
Unit
No. 2
(Sub)
Unit
No. 3
(Sub)
Remote control
communication wiring
Outdoor unit
system 1
Indoor unit
Outdoor unit
system n
Inter-outdoor unit control wiring Inter-outdoor unit control wiring
Leave the socket that is
used to short-circuit the
terminal plug.
(CN67)
Between conductors
Between wiring and ground
Wire
Wire
Ground Ground
Wire
Wire
Inter-unit control wiring
Indoor unit
Unit
No. 1
(Main)
Unit
No. 2
(Sub)
Unit
No. 3
(Sub)
Remote control
communication wiring
Remote
controller
Remote
controller
Remote
controller
Outdoor unit
system 2
Indoor unit
Inter-outdoor control wiring Inter-outdoor unit control wiring
Move the sockets to the
“OPEN” side. (CN67)
Inter-unit control wiring
Unit
No. 1
(Main)
Unit
No. 2
(Sub)
Unit
No. 3
(Sub)
Remote control
communication wiring
Inter-outdoor unit control wiring Inter-outdoor unit control wiring
Leave the socket that is
used to short-circuit the
terminal plug.
(CN67)
Inter-unit control wiring
Setting of terminal plug (CN67)
Unit No. 1 (Main)
Unit No. 2 (Sub)
Unit No. 3 (Sub)
open-circuit
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
short-circuit (at shipment)
Refrigerant circuit No. No. 1 No. 2 to n-1 No. n
3. Auto Address Setting
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SM830205-04_2WAY_VRF_Euro.indb 11 15/01/20 15:15:25

1-12
2WAY SYSTEM
Address Settings
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Display during automatic address setting
On outdoor main unit PCB
1
2* Do not short-circuit the automatic address setting pin (CN030) 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.
* 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 : Blinking : OFF)
Display meaning
LED 2
LED 1
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.
Automatic address setting is in progress.
Alternating
Automatic address setting completed.
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 display.
Simultaneous
Refer to “Table of Self-Diagnostic Functions and Description of Alarm Displays.”
Alternating
Note: “ ” indicates that the solenoid is fused or that there is a CT detection current failure (current is detected when the
compressor is OFF).
Remote controller display
Blink alternately
LED
is blinking
CZ-RTC2 CZ-RTC3
Cancel
Auto address
1
Assigning
3. Auto Address Setting
2WAY SYSTEM
Address Settings
3. Auto Address Setting
* Automatic address setting in cooling mode cannot be done from the remote controller.
Automatic Address Setting* from the Remote Controller
<Procedure of CZ-RTC2>
Selecting each refrigerant system individually for automatic address setting
---Automatic address setting for each system: Item code “A1”
1. Press the remote controller timer time button and button at the
same time. (Press and hold for 4 seconds or longer.)
2. Next, press either the temperature setting or button.
(Check that the item code is “A1.”)
3. Use either the or button to set the system No. to perform
automatic address setting.
4.Then press the 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, “ ” is displayed on
the remote controller. This message disappears when automatic address
setting is completed.)
5. Repeat the same steps to perform automatic address setting for each
successive system.
SETTING
<Procedure of CZ-RTC3>
1. Keep pressing the , and
for 4 or more seconds.
buttons simultaneously
The “Maintenance func” screen appears on the LCD display.
2. Press the or button to see each menu.
If you wish to see the next screen instantly, press the or
button.
Select “9. Auto address” on the LCD display and press the button.
3. The “Auto address” screen appears on the LCD display.
Change the “Code no.” to “A1” by pressing the or button.
4. Select the “O/D unit no.” by pressing the or button.
Select one of the “O/D unit no.” for automatic address by pressing the or button.
Then press the button.
Approximately about 10 minutes are required.
When automatic address setting is completed, the units return to normal stopped status.
Maintenance func
10. Set elec. consumption
12. Check touch key
Sel. Page []Confirm
20:30 (THU)
11. Set touch key
9. Auto address
Auto address
Code no. O/D unit no.
Sel. Next
20:30 (THU)
1
A1
CZ-RTC3
CZ-RTC2
START
[]
20:30 (THU)
SM830205-04_2WAY_VRF_Euro.indb 12 15/01/20 15:15:25