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UTZ-GXXC

Fujitsu UTZ-GXXC Installation guide

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INSTALLATION
MANUAL
For authorized service personnel only.
EXTERNAL POWER SUPPLY UNIT
Do not install the unit in the following areas:
• Do not install the unit near a source of heat,
steam, or flammable gas.
• Area filled with mineral oil or containing a large
amount of splashed oil or steam, such as a
kitchen. It will deteriorate plastic parts, causing
the parts to fail or the unit to leak water.
• Area that generates substances that adversely af-
fect the equipment, such as sulfuric gas, chlorine
gas, acid, or alkali. It will cause the copper pipes
and brazed joints to corrode, which can cause
refrigerant leakage.
• Area containing equipment that generates electro-
magnetic interference. It will cause the control
system to malfunction, preventing the unit from
operating normally.
• Area that can cause combustible gas to leak, con-
tains suspended carbon fibers or flammable dust,
or volatile inflammables such as paint thinner or
gasoline. If gas leaks and settles around the unit,
it can cause a fire.
• Do not use the unit for special purposes, such as
storing food, raising animals, growing plants, or
preserving precision devices or art objects. It can
degrade the quality of the preserved or stored
objects.
• Install the unit in a well-ventilated place avoiding
rains and direct sunlight.
Do not operate this unit when your hands are wet.
Touching the unit with wet hands will cause an
electric shock.
If children may approach the unit, take preventive
measures so that they cannot reach the unit.
1. SAFETY PRECAUTIONS
• The “SAFETY PRECAUTIONS” indicated in this
manual contain important information pertaining to
your safety. Be sure to observe them.
• Request the user to keep this manual on hand for
future use, such as for relocating or repairing the
unit.
WARNING
This mark indicates proce-
dures which, if improperly
performed, might lead to the
death or serious injury of
the user.
Perform electrical work by an authorized service
personnel in accordance with this manual and the
electrical wiring regulations or implementation regu-
lations of the country. Also do not install this unit by
yourself. Improper electric work will cause electric
shock or a fire.
Perform installation work in accordance with this
manual. Request an authorized service personnel
to perform installation work. Do not install this unit
by yourself. Improper installation will cause injury,
electric shock, fire, etc.
In the event of a malfunction (burning smell, etc.),
immediately stop operation, turn off the electrical
breaker, and consult authorized service personnel.
Use a power source exclusively for this unit. Never
share the power source with other electrical equip-
ment. Doing so will cause fire and electric shock.
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Contents
1. SAFETY PRECAUTIONS .................................... 1
2. ABOUT THE UNIT ................................................ 2
3. ELECTRICAL REQUIREMENT ........................... 3
4. SELECTING AN INSTALLATION LOCATION ..... 3
5. INSTALLING THE UNIT ....................................... 4
6. WIRING ................................................................ 4
7. TURNING ON THE POWER ................................ 8
PART No. 9384017017-03
UTZ-GXXC
[Original instructions]
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CAUTION
This mark indicates proce-
dures which, if improperly
performed, might possibly
result in personal harm
to the user or damage to
property.
Pay abundant care when transporting this unit
because it is a precision device. Improper transpor-
tation will cause trouble.
Do not expose this unit directly to water. Doing so
will cause trouble, electric shock, or heating.
Do not set vessels containing a liquid on this unit.
Doing so will cause heating, fire, or electric shock.
Dispose of the packing materials safely. Tear and
dispose of the plastic packing bags so that children
cannot play with them. There is the danger of suffo-
cation if children play with the original plastic bags.
2. ABOUT THE UNIT
2.1. General
If some indoor units in the same refrigerant system
are turned off, other indoor units will also be stopped
due to communication error and EV valve stop.
These may cause a malfunction. This product sup-
plies power to the PCB of the indoor unit when the
indoor unit is turned off in order to prevent communi-
cation error and stop of the EV valve.
Operation example
When the indoor unit of tenant B is turned off, power
is supplied to indoor unit PCB, so the operation of
indoor units of tenant A and tenant C is not affected.
(a)
(b)
(c)
(d)
(f)
(e)
Tenant A Tenant B
Turned
off
Tenant C
(a) Outdoor unit
(b) Electric transformer* (240 VAC to 24 VAC)
(c) External power supply unit (this unit)
(d) Indoor unit
(e) Transmission cable
(f) Remote controller (no error)
*: Locally purchased
2.2. Parts and accessories
The following installation parts are supplied. Use
them as required.
Name and Shape Q’ty Description
Installation
manual
1
This manual
External power
supply unit
1
Main unit of this product
Tapping screw
4
For mounting the main
unit.
Connecting cable
5 m
1
For connection to main
unit and the indoor unit
PCB.
Cable tie (large)
2
For binding cables inside
the main unit.
EMI core
1**
Attach it in the electric
box of the indoor unit.
Cable tie (small)
1**
For fixing the EMI core.
Adapter cable
1*
For converting the
connection cable to 3
wires.
*: It is used to connect to the following models of
indoor unit.
AUXM, AUXK, AUXS, AG*A or AG*E
**: It is used to connect to the following models of
indoor unit.
AB*A 012/014/018/024
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2.3. Specifications
Power supply
1Ø 24 VAC 50/60 Hz
Indoor unit power supply
detect
1Ø 220-240 VAC
50/60 Hz
Temperature
(°C)
Operating
0 to 46
Packaged
-10 to 60
Humidity (%) Packaged
0 to 95 (RH); No
condensation
Dimensions
H x W x D (mm)
97 × 200 × 178
Weight (g)
800
3.
ELECTRICAL REQUIREMENT
The following items are necessary to install this
product. (These items are not included with this
product and must be purchased separately.)
Name Q’ty Description
Electric trans-
former
1
24 VAC ±15%
UL Class
Ⅱ
or
IEC 61558 Class
Ⅲ
*Comply with local regulations
Use Size
Wire
type
Remarks
Power
supply
cable
(electric
trans-
former)
Maxi-
mum
1.25 mm
2
(16AWG)
Type
60245
IEC 57 or
equivalent
1Ø 24 VAC
50/60Hz, 2
Cable
Mini-
mum
0.5 mm
2
(20AWG)
Power
supply
cable
(circuit
breaker)
2.5 mm
2
1Ø 220-240
VAC 50/60 Hz
2 cable +
ground (earth)
4. SELECTING AN
INSTALLATION LOCATION
4.1. Dimensions
This product is comprised of a body and cover.
83
50
163
6
178
200
120 42
97
Unit: mm
4.2. Installation conditions
4.2.1. Installing direction
This product can be installed in the following
direction.
Prohibited
To prevent water from entering
through the cable, do not install
this product in the direction
shown in the following figure.
4.2.2. Installing position
Install this product in a position where the supplied
connecting cable 5 m can reach.
Cassette type, Duct type
Wall mounted type
Ceiling type Floor type
Prohibited
Prohibited
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5. INSTALLING THE UNIT
WARNING
Always use the accessories and specified installa-
tion work parts. Check the state of the installation
parts. Not using the specified parts will cause units
to fall off, electric shock, fire, etc.
Install at a place that can withstand the weight of
the unit and install positively so that the unit will
not topple or fall and add the wooden material for
reinforce if necessary.
When installing this unit, make sure that there are
no children nearby. Otherwise, injury or electric
shock could result.
CAUTION
Before opening the cover of this unit, completely
discharge static electricity charged on your body.
Otherwise, failure or malfunction could result.
Do not touch the circuit board and circuit board
parts directly with your hands. Otherwise, injury or
electric shock could result.
Tightening the mounting screws too tight will dam-
age the body of this unit.
Be careful so that the cover does not fall after the
cover screws are removed. Otherwise, injury could
result.
Installing the main unit with 4 screws (accessories).
6. WIRING
WARNING
Before starting installation work, turn off the power
of this unit and the connection destination. Do not
turn on the power again until installation is complet-
ed. Otherwise, it will cause electric shock or fire.
Use specified cables or accessory cables to
connect to this unit. Do not modify the cables to
connect this unit other than those specified, do not
use extension cables, and do not use independent
branch wiring. It may cause electric shock or fire.
Install the cables securely to the terminal block.
Confirm that external force is not applied to the
cable. If intermediate connection or insertion fixing
are imperfect, it will cause electric shock, fire, etc.
When connecting the cables to this unit, route the
cables so that the cover of this unit is securely
fixed. If the cover is imperfectly fixed, it may cause
fire or overheating of the terminals.
Always fasten the outside covering of the cables
with the cable clamp. (If the insulator is chafed,
electric leakage may occur.)
Perform all wiring works so that the user does not
touch the wiring. Otherwise, injury or electric shock
could result.
If any cable is damaged, do not repair or modify it
yourself. Improper work will cause electric shock
or fire.
CAUTION
When performing wiring work, be careful not to
damage the cable or injure yourself. Also, connect
the connectors securely. Loose connectors will
cause trouble, heating, fire, or electric shock.
Install this unit and cables 1 m away from television
and radio to avoid distorted images and noise.
Otherwise, a malfunction could result.
Perform wiring so that water does not enter this unit
along the external wiring. Always install a trap to
the wiring or take other countermeasures. Other-
wise it will cause trouble or electric shock or fire.
Confirm the name of each unit and name of each
terminal block of the unit and connect the wiring in
accordance with the directions given in the manual
so that there is no incorrect wiring. Incorrect wiring
will damage the electric parts and cause smoke
and fire.
Do not bind the power supply cable and connecting
cable to avoid an erroneous operation.
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6.1. Wiring method
6.1.1. Wiring diagram
(1)
(2)
(3)
(4)
1
5
4
2
50/60 Hz
220 - 240 VAC*
Electric
transformer
(240 VAC to
24 VAC) **
External power
supply unit
(this product)
Relay
Indoor unit
PCB
50/60 Hz
220 - 240 VAC
(for indoor unit)
breaker ***
*: A dedicated power supply that is not shut off
even if turned off the indoor units.
**: Locally purchased
***: Circuit breaker and earth leakage breaker
(1) Connect the external power supply unit and the
PCB of the indoor unit with the provided Con-
necting cable. (Depending on the model of the
indoor unit, the Adapter cable is also used.)
(2) Connect 24 VAC power to the terminal of the
External Power Supply Unit.
(3) Connect the inner and external power supply
unit to the breaker.***
(4) Connect the power line of the power transform-
er primary side to the circuit breaker.
6.2. Unit wiring
6.2.1. Power supply cable (Electric
transformer)
WARNING
Use ring terminals and tighten the terminal screws
to the specified torques, otherwise, abnormal over-
heating may be occurred and possibly cause heavy
damage inside the unit.
(1) Strip the power cable as follows.
Unit: mm
10 20
(2) Use ring terminals with insulating sleeves as
shown in the figure below to connect to the
terminal block.
(3) Securely clamp the ring terminals to the cables
using an appropriate tool so that the cables do
not come loose.
(4) Use the specified cables, connect them secure-
ly, and fasten them so that there is no stress
placed on the terminals.
(5) Use an appropriate screwdriver to tighten the
terminal screws. Do not use a screwdriver
that is too small, otherwise, the screw heads
may be damaged and prevent the screws from
being properly tightened.
(6) Do not tighten the terminal screws too much,
otherwise, the screws may break.
(7) See the table for the terminal screw tightening
torques.
(8) Do not fix 2 or more power supply cables with
1 screw.
Sleeve
Screw with spe-
cial washer
Screw with
special washer
Ring terminal
Cable
Cable
Terminal block
Ring terminal
Ring
terminal
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6.2.2. Power supply cable (Circuit
breaker)
Adjust the length of power supply cable to avoid
excessive tension with referring figure below.
25 mm
90 mm
Ground
(earth)
cable
A. For solid core wiring
(1) To connect the electrical terminal, follow the
below diagram and connect after looping it
around the end of the cable.
(2) Use the specified cables, connect them secure-
ly, and fasten them so that there is no stress
placed on the terminals.
(3) Use an appropriate screwdriver to tighten the
terminal screws.
Do not use a screwdriver that is too small,
otherwise, the screw heads may be damaged
and prevent the screws from being properly
tightened.
(4) Do not tighten the terminal screws too much,
otherwise, the screws may break.
(5) Refer to the table for the terminal screw tight-
ening torques.
(6) Please do not fix 2 power supply cables with
1 screw.
Strip 25 mm
Screw with
special washer
Screw with
special
washer
Cable end
(loop)
Loop
Terminal block
Cable
end
(loop)
Cable
Cable
Do not apply branch wiring. It may result electric
shock or fire.
WARNING
When using solid core cables, do not use the ring
terminal. If you use the solid core cables with the
ring terminal, the ring terminal's pressure bonding
may malfunction and cause the cables to abnor-
mally heat up.
B. For strand wiring
(1) Use ring terminals with insulating sleeves as
shown in the figure below to connect to the
terminal block.
(2) Securely clamp the ring terminals to the cables
using an appropriate tool so that the cables do
not come loose.
(3) Use the specified cables, connect them secure-
ly, and fasten them so that there is no stress
placed on the terminals.
(4) Use an appropriate screwdriver to tighten the
terminal screws. Do not use a screwdriver
that is too small, otherwise, the screw heads
may be damaged and prevent the screws from
being properly tightened.
(5) Do not tighten the terminal screws too much,
otherwise, the screws may break.
(6) Refer to the table for the terminal screw tight-
ening torques.
(7) Do not fix 2 power supply cables with 1 screw.
Strip 10 mm
Ring terminal
Sleeve
Screw with
special washer
Screw with
special
washer
Ring terminal
Terminal block
Ring
terminal
Cable
Cable
WARNING
Use ring terminals and tighten the terminal screws
to the specified torques, otherwise, abnormal
overheating may be produced and possibly cause
heavy damage inside the unit.
Tightening torque
M4 screw (Power
supply/L, N, GND)
1.2 to 1.8 N·m
(12 to 18 kgf·cm)
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6.3. Connecting the power supply
cable
(1) Turn the power off.
(2) Loosen the 3 screws, and then remove the
cover of the main unit.
(3) Connect the power supply cable to their respec-
tive terminal block.
Tightening torque
M4 screw
0.8 to 2.8 N•m
8.0 to 28.0 kgf•cm
GND
Cable from the
circuit breaker
Cable ties (large)
(accessories)
Cable clamp
Cable from the
electric transformer
(4) Securely tighten the cable tie (large) and then
confirm that the cables will not come out.
Tightening strength
Cable tie (large)
(for power supply cable)
0.3 to 0.5 N
3.0 to 5.0 kgf
6.4. Connecting the connecting
cables
The connecting method differs by the indoor unit.
Indoor unit model name
(The fi rst 4 characters)
Connection
method
AUXM
AUXK
AUXS
AG*A
With the adapter ca-
ble (Refer to 6.4.1.
Connection with the
adapter cable)
Other indoor unit
With the adapter ca-
ble (Refer to 6.4.2.
Connection without
the adapter cable)
6.4.1. Connection with the adapter
cable
(1) Turn the power off.
(2) Attach the adapter cable to the connecting
cable.
(3) Connect the adapter cable to the connector.
Connecting cable (accessories)
Cable ties (large, accessories)
Adapter cable (accessories)
Cable clamp
(4) Bind the adapter cable with the cable clamp.
(5) Securely tighten the cable tie (large) and then
confirm that the cables will not come out.
Tightening strength
Cable tie (large)
(for connecting cable)
0.3 to 0.5 N
3.0 to 5.0 kgf
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(6) Connect the connecting cable to the PCB of the
indoor unit. Refer to the installation manual of
each indoor unit for details of the work of the
indoor unit.
6.4.2. Connection without the adapter
cable
(1) Turn the power off.
(2) Connect the connecting cable to the connector.
Cable ties (large, accessories)
Connecting cable (accessories)
(3) Securely tighten the cable tie (large) and then
confirm that the cables will not come out.
Tightening strength
Cable tie (large)
(for connecting cable)
0.3 to 0.5 N
3.0 to 5.0 kgf
(4) Connect the connecting cable to the PCB of the
indoor unit. Refer to the installation manual of
each indoor unit for details of the work of the
indoor unit.
(5) Attach the EMI core (accessory) for the follow-
ing models.
AB*A 012/014/018/024
• Attaching the EMI core to the indoor unit side of
the connecting cable. Be sure to place the EMI
core on the sheath of the cable. Through the cable
tie (small) (accessory) to the slit of EMI core and
bind the cables. Refer to the installation manual
of each indoor unit for details of the work of the
indoor unit.
Cable tie (small) (accessories)
Connecting cable (accessories)
CAUTION
After wiring connection, fi ll the wiring-through
openings with putty (Locally purchased). Other-
wise, small animals, etc. may enter, resulting in
smoke generation or ignition.
7. TURNING ON THE POWER
CAUTION
Check that the power supply voltage is within
the specifi ed range. If the power supply voltage
outside the specifi cation is input, it will cause
trouble.
Recheck the wiring. Incorrect wiring will cause
trouble.
(1) Check the wiring of this product.
(2) Turn on the power for this product and the
indoor unit.
(3) After turning on the power, confirm that the LED
(green) on the PCB of the indoor unit is lit.
(4) Turn off the power of the indoor unit and
confirm that the LED (green) on the indoor unit
PCB is blinking (repeat 3 seconds ON and 1
second OFF).
(5) Turn on the power to the indoor unit again to
confirm that it operates normally.
/