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USER'S MANUAL
Floor Ceiling R410A 50Hz
YIFFZC012BAEFA
YIFFZC018BAEFA
Read this manual before installation and operation
Make sure that it is well kept for later reference
No. 0150520007
Contents
Cautions
3
Safety Precautions
4
Parts and Functions
Cleaning and Care
6
7
Troubleshooting
8
Installation Procedure
10
Test Run
22
Cautions
tubes with sharp or pointed items, crushing or twisting any
tubes, or scraping the coatings off the surfaces. If the
refrigerant spurts out and gets into eyes, it may result in
serious eye injuries.
Do not obstruct or cover the ventilation grille of the air
conditioner. Do not put fingers or any other things into the
inlet/outlet and swing louver.
Do not allow children to play with the air conditioner. In no
case should children be allowed to sit on the outdoor unit.
When the indoor unit is turned on, the PCB will test if swing
motor is O.K., and then fan motor will start up.So there is a
few seconds to wait.
In cooling mode,the flaps will swing automatically to a fixed
position for anti-condensating.
This appliance is not intended for use by persons (including
children) with reducedphysical, sensory or mental capabilities,
or lack of experience and knowledge, unless they have been
given supervision or instruction concerning use of the
appliance by a person responsible for their safety.
Children should be supervised to ensure that they do not play
with the appliance.
Disposal of the old air conditioner
Before disposing an old air conditioner that goes out of use,
please make sure it's inoperative and safe. Unplug the air
conditioner in order to avoid the risk of child entrapment.
It must be noticed that air conditioner system contains
refrigerants, which require specialized waste disposal. The
valuable materials contained in a air conditioner can be
recycled. Contact your local waste disposal center for proper
disposal of an old air conditioner and contact your local
authority or your dealer if you have any question. Please
ensure that the pipework of your air conditioner does not get
damaged prior to being picked up by the relevant waste
disposal center, and contribute to environmental awareness
by insisting on an appropriate, anti-pollution method of
disposal.
Disposal of the packaging of your new air conditioner
All the packaging materials employed in the package of your
new air conditioner may be disposed without any danger to
the environment.
The cardboard box may be broken or cut into smaller pieces
and given to a waste paper disposal service. The wrapping
bag made of polyethylene and the polyethylene foam pads
contain no fluorochloric hydrocarbon.
Specifications
The refrigerating circuit is leak-proof.
For all the models in this manual, the all-pole discon-nexion
connection method should be applied in the power supply.
Such means for disconnection must be incorporation in the
fixed wiring.
All these valuable materials may be taken to a waste collecting
center and used again after adequate recycling.
Consult your local authorities for the name and address of the
waste materials collecting centers and waste paper disposal
services nearest to your house.
Cooling
Safety Instructions and Warnings
Indoor temperature
max.
min.
DB/WB 32/23 C
DB/WB 18/14 C
Outdoor temperature
max.
min.
DB/WB 43/26 C
DB/WB
18/- C
If the supply cord is damaged, it must be replaced by the
manufacturer or its service agentor a similar qualified person.
If the fuse on PC board is broken please change it with the
type of T3.15A/250VAC.
The wiring method should be in line with the local wiring
standard.
The waste battery shall be disposed properly.
The indoor unit installation height is at least 2.5m.
The air breaker and the power switch should installed the
conveniently reachable pleace for user.
Before starting the air conditioner, read the information given
in the User's Guide carefully. The User's Guide contains very
important observations relating to the assembly, operation
and maintenance of the air conditioner.
The manufacturer does not accept responsibility for any
damages that may arise due to non-observation of the
following instruction.
Damaged air conditioners are not to be put into operation.
In case of doubt, consult your supplier.
Use of the air conditioner is to be carried out in strict
compliance with the relative instructions set forth in the
User's Guide.
Installation shall be done by professional people. Don't install
unit by yourself.
For the purpose of safety, the air conditioner must be properly
grounded in accordance with specifications.
Always remember to unplug the air conditioner before
opening inlet grill. Always grip plug firmly and pull straight
out from the outlet.
All electrical repairs must be carried out by qualified
electricians. Inadequate repairs may result in a major source
of danger for the user of the air conditoiner.
Do not damage any parts of the air conditioner that carry
refrigerant by piercing or perforating the air conditioner's
3
Safety Precautions
WARNING!
If the power supply cord of this air conditioner is damaged, it must be replaced by the manufacturer or its authorized
service personnel only.
Use copper wire only. All the cables shall have got the Local authentication certificate.
The power cable and connecting cable are self-provided.
If the fuse on PC board is broken please change it with the type of T3.15A/250VAC.
DANGER!
Do not attempt to install this air conditioner by yourself.
This unit contains no user-serviceable parts. Always consult authorized service personnel for repairs.
When moving, consult authorized service personnel for disconnection and installation of the unit.
Do not become excessively chilled by staying for lengthy periods in the direct cooling airflow.
Do not insert fingers or objects into the outlet port or intake grills.
Do not start and stop air conditioner operation by connecting and disconnecting the power supply cord and so on.
Take care not to damage the power supply cord.
In the event of a malfunction (burning smell, etc.), stop operation immediately, turn off the circuit breaker, and consult
authorized service personnel.
CAUTION!
Provide occasional ventilation during use.
Do not direct air flow at fireplaces or heating apparatuses.
Do not place objects on the air conditioner or climb onto it.
Do not hang objects from the indoor unit.
Do not set flower vases or water containers on top of the air conditioner.
Do not expose the air conditioner directly to water.
Do not operate the air conditioner with wet hands.
Do not pull power supply cord.
Turn off power source when not using the unit for extended periods.
Check the condition of the installation stand for damage.
Do not place animals or plants in the direct path of the air flow.
Do not drink the water drained from the air conditioner.
Do not use in applications involving the storage of foods, plants or animals, precision equipment or art works.
Do not apply any heavy pressure to radiator fins.
Operate only with air filters installed.
Do not block or cover the intake grill and outlet port.
Ensure that any electronic equipment is at least one metre away from either the indoor or outdoor unit.
Avoid installing the air conditioner near a fireplace or other heating apparatuses.
When installing the indoor and outdoor unit, take precautions to prevent access to infants.
Do not use inflammable gases near the air conditioner.
Carefully read the following information in order to operate the airconditioner correctly.
Below are listed three kinds of Safety Cautions and Suggestions.
WARNING! Incorrect operations may result in severe consequences of death or serious injuries.
CAUTION! Incorrect operations may result in injuries or machine damages; in some cases may cause serious consequences.
INSTRUCTIONS: These information can ensure the correct operation of the machine.
Be sure to conform with the following important Safety Cautions.
The Safety Cautions should be at hand so that they can be checked at any time when needed.
If the conditioner is transferred to the new user, this manual should be as well transferred to the new user.
4
Safety Precautions
WARNING!
Don't dismantle the outlet of the outdoor unit.
If any abnormal phenomena is found (e. g.smell of
firing), please cut off the power supply immediately,
and contact the dealer to find out the handling
method.
The exposure of fan is very dangerous whichmay harm
human beings.
In such case, to continue using the conditioner will
damage the conditioner, and may cause electrical shock
or fire hazard.
When need maintenance and repairment, call dealer
to handle it.
Incorrect maintenance and repairment may cause water
leak, electrical shock and fire hazard.
switch
off
After a long time use of air-conditioner the base
should be checked for any damages.
If the damaged base is not repaired, the unit may fall
down and cause accidents.
No goods or nobody is permitted to placed on or
stand on outdoor unit.
The falling of goods and people may cause accidents.
Installed electrical-leaking circuit breaker.
It easily cause electrical shock without circuit breaker.
Air-conditioner can't be installed in the environment
with inflammable gases because the inflammable
gases near to air-conditioner may cause fire hazard.
Don't operate the air-conditioner with damp hands.
Please let the dealer be responsible for installing
the conditioner.
Incorrect installation may cause water leak, electrical
shock and fire hazard.
Otherwise will be shocked.
Call the dealer to take measures to prevent the
refrigerant from leaking.
If conditioner is installed in a small room be sure to take
every measure in order to prevent suffocation accident
even in case of refrigerant leakage.
Only use correctly-typed fuse.
May not use wire or any other materials replacing fuse,
otherwise may cause faults or fire accidents.
When conditioner is deinstalled or reinstalleddealer
should be respon-sible for them.
Incorrect installation may cause water leaking, electrical
shock and fire hazard.
Connect earthing wire.
Earthing wire should not be con- nected to the
gas pipe, water pipe, lightning rod or phone
line, in-correct earthing may cause shock.
Use discharge pipe correctly to ensure efficient
discharge.
Incorrect pipe use may cause water leaking.
Earthing
5
Parts and Functions
Indoor unit
YIFFXC012BAEFA
YIFFXC018BAEFA
10
1
11
3
9
POWER
4
OPER
5
TIMER
6
COMP
7
EMER
2
3
8
(1) Operating Control Panel
(2) Emergency Switch
(3) Remote Control Signal Receiver
(4) Power Indicator Lamp (Red)
(5) Operation Indicator Lamp (Green)
(6) Timer Indicator Lamp (Yellow)
(7) Compressor Run Lamp (Green)
(8) Intake Grill
(9) Air Filter
(10) UP/DOWN Air Direction Flaps
(11) RIGHT/LEFT Air Direction Louvers (behind UP/DOWN Air Direction Flaps)
Note :
For the wired control type unit, the unit state should be checked by the wired controller, instead of the remote receiver.
and if you set the TIMER function, the TIMER LED on the remote receiver will not be on.
Outdoor unit
YIFFYC012BAEFA
YIFFYC018BAEFA
Air inlet
Air outlet
Compressor
(Inside of unit)
6
Cleaning and Care
CAUTION:
Before cleaning the air conditioner, be sure to turn it off and disconnect the Power Supply Cord.
Be sure the Intake Grill is installed securely.
When removing and replacing the air filters, be sure not to touch the heat exchanger, or personal injury may result.
Cleaning the Air Filter
1. Open the Intake Grill
Pull out both sides and the center of the Intake Grill.
Side Panel
Hook
About 30 mm
Arm
2. Pull the Air Filters upward to remove them
Push the Air Filter handles away from the Intake Grille in
the direction as illustrated, then pull out Air Filters.
Notch
Arm
Intake Grill
Air Filter
Bracket
3. Clean the Air Filters
Remove the dust from the Air Filters by vacuum cleaner
or washing them. After washing, allow the Air Filters to
dry thoroughly in an area protected from sunlight.
Air Filter
(Figure 1)
Base
Handle
(Figure 2)
Filter bracket
4. Re-attach the Air Filters to the Intake Grill
(1)The Filters fit onto the inside of the intake Grill.(Figure 1)
(2)The bottom edges of the Air Filters should fit into the
filter brackets. (Figure 1)
(3)The Air Filters should be pushed down so that their top
edges fit under the projections at the top of the Intake Grill.
(Figure 2)
5. Close the intake grill
Push in both sides and the center of the Intake Grill.
Dust can be cleaned from the Air Filter either with a vacuum cleaner, or by washing the filter in a solution of mild detergent
and warm water. If you wash the filter, be sure to allow it to dry thoroughly in a shady place before reinstalling.
If dirt is allowed to accumulate on the Air Filter, air flow will be reduced, operating efficiency lowers and noise increases.
During periods of normal use, the Air Filters should be cleaned every two weeks.
7
Troubleshooting
Followings are not problems
Sound of water flowing is not a problem.
During unit operation or at stop, a swishing or gurgling noise may be heard.
This noise is generated by refrigerant flowing in the system.
Sound of cracking is heard.
During unit operation, a cracking noise may be heard.
This noise is generated by the casing expanding or shrinking because of
temperature changes.
Smell are generated.
This is because the system circulates smells from the interior air such as
the smell of cigarettes or the painting on the furniture.
During operation, white fog or steam
comes out from the indoor unit.
When unit is running at places like restaurant, etc. where dense edible oil
fumes always exist, this will happen.
In cooling operation, unit switches to
blowing operation.
To prevent frost from accumulating on indoor heat exchanger, unit will switch
to blowing operation for a while then resume cooling operation.
Unit will not restart after stop.
Though ON/OFF button is set to ON, the unit won't
resume cooling, dry or heating operation in 3 min
after it is stopped, this is because of
3-min-delay protection circuit.
Won't start?
Please wait 3 minutes
No outlet air or fan speed can't be changed
in dry mode.
Unit will reduce fan speed repeatedly and automatically if room temp. is
too low in dry operation.
In heating operation, water or steam
are blown out of outdoor unit.
This occurs when frost accumulated on the outdoor unit is removed.
(during defrosting operation)
In heating operation, indoor fan won't stop
even if unit is stopped.
After unit stop, indoor fan will go on running until indoor unit cools down.
Before ask for services, please first check your unit against the following.
Air conditioner won't start.
Is power supply switch turned on?
Is city power supply normal?
Is leakage current breaker activated?
This is very dangerous, please
disconnect power supply immediately
and contact your dealer.
Power
failure?
Power supply switch is not set at ON.
Poor cooling or heating
Are operation control adjusted
correctly as specified?
Is air filter too dirty?
Proper
temp
Are horizontal louvers at up position
(in heating mode)?
Any doors or windows left open?
8
Are there any obstacles in inlet or
outlet grill?
Troubleshooting
Poor cooling
Is there any direct sunlight in the room?
If there are unexpected heat sources
in the room?
Too many people in the room?
Cold air blows out (in heating mode). Is air conditioner in standby condition in heating mode?
If your unit still can't work properly after above mentioned checks, or following problems occur, please stop it immediately
and contact your dealer.
Fuses or circuit breakers often blow out.
Water comes out in cooling/dry operation.
Operation is abnormal or sound is heard.
YIFFYC012BAEFA YIFFYC018BAEFA
LED flash
times of signal
receiver board
Wired
controller Contents of Malfunction
display
Possible reasons
1
E1
Malfunction of indoor unit ambient
temperature sensor
Sensor disconected,or broken, or at wrong position,
or short circuit
2
E2
Malfunction of indoor unit piping
temperature sensor
Sensor disconected, or broken, or at wrong position,
or short circuit
5
E5
Compressor overcurrent / phase
sequence wrong
Overcurrent after compressor running or power suppl
phase sequence wrong before compressor running.It
occurs 3 times in 1 hour, comfirm the failure, the former
twice will not alarm.
9
E8
Abnormal communication between
wired controller and indoor unit
Wrong connection or wired controller broken, or PCB
faulty
10
E0
Malfunction of drain system
Pump motor disconnected or at wrong position,or
the float switch disconnected, or at wrong position,
or the short circuit bridge disconne ted
14
FC
Indoor coil temperature too high in
cooling mode
Refrigerant leakage or indoor coil sensor falling off
9
Installation Procedure
Indoor Unit
Please ask the dealer or specialist to install, never try by the SELECTING THE MOUNTING POSITION
users themselves. After the installation please be sure of the Decide the mounting position with the customer as
following conditions.
follows:
WARNING:
(1) Install the indoor unit level on a strong wall, floor, ceiling
Please call dealer to install the air-conditioner.
which is not subject to vibration.
Incorrect installation may cause water leaking, shock and (2) The inlet and outlet ports should not be obstructed.The
fire hazard.
air should be able to blow all over the room.
(3) Install the unit near an electric outlet or special branch
CAUTION:
circuit.
Air-conditioner can't be installed in the environment
(4) Do not install the unit where it will be exposed to direct
with inflammable gases because the inflammable gases
sunlight.
near air-conditioner may cause fire hazard.
(5) Install the unit where connection to the outdoor unit is
Installed electrical-leaking circuit breaker.
easy.
It easily cause electrical shock without circuit breaker.
(6) Install the unit where the drain pipe can be easily installed.
Connect earthing wire.
(7) Take servicing etc. into consideration and leave the
Earthing wire should not be connected to the gas pipe, water spaces shown in the figure below. Also install the unit where
pipe, lightning rod or phone line, incorrect earthing may
the filter can be removed.
cause shock.
Use discharge pipe correctly to ensure efficient
WARNING:
discharge.
Install at a place that can withstand the weight of the indoor and
Incorrect pipe use may cause water leaking.
outdoor units and install positively so that the units will not topple
Earthing
or fall.
Wiring
Air-conditioner should be equipped with special power supply
CAUTION:
wire.
(1)Do not install where there is the danger of combustible gas
Location
leakage.
(2)Do not install near heat sources.
(3)If children under 10 years old may approach the unit, take
preventive measures so that they cannot reach the unit.
Air-conditioner should be located in well-vented and easily
accessible place.
Air-conditioner should not be located in the following places:
(1) Places with machine oils or other oil vapours.
(2) Seaside with high salt content in the air.
(3) Near hot spring with high content of sulfide gases.
(4) Area with frequent fluctuation of voltage e.g. factory,
etc.
(5) In vehicles or ships.
(6) Kitchen with heavy oil vapour or humidity.
(7) Near the machine emitting electric-magnetic waves.
(8) Places with acid, alkali vapour.
Choose the following locations:
(1) Capable of supporting air conditioner weight, don't
increase operating noise and vibration.
(2) Hot vapour from outdoor unit outlet and operating noise
don't disturb neighbour.
(3) No obstacles around the outdoor unit outlet.
TV, radio, acoustic appliances etc. are at least 1 m far away
from the indoor unit, outdoor unit, power supply wire,
connecting wire, pipes, otherwise images may be disturbed
or noises be created.
As required, take measures against heavy snow.
Under ceiling
Left
30 cm
or more
Floor console
Ceiling
may be difference
Right
Indoor unit
1.5m
Left
30 cm
or more
Right
1.5m
2 cm
or more
Outdoor unit
INSTALLATION PARTS
The following installation parts are optional parts. Use them
as required.
Optional parts
Adhesive tape
Drain hose
Saddle (L.S) with screws
Piping hole cover
Heat insulation material
Plastic clamp
Indoor unit
Putty
10
1.5m
30 cm
or more
Installation Procedure
Indoor Unit
PREPARING INDOOR UNIT INSTALLATION
Remove the intake grill
Open the intake grill and remove the three or four or six screws.
Note:
The main unit can be wired before the indoor unit is installed.
Select the most appropriate installation order.
Intake grill
Fig. 1
A.FLOOR CONSOLE TYPE
1.Drilling for piping
Select piping and drain directions. The piping and drain can be made
in three directions as shown in the Fig.1.
rear
right
down
The drain hose can be connected to either the left or right side. (Fig.2)
Fig. 2
Drain hose (Left side)
When the directions are selected, drill a 7 cm dia. hole on the wall so
that the hole is tilted downward toward the outdoor for smooth water
flow. When the pipe is led out from the rear, make a hole at the position
shown in Fig.3.
Drain hose (Right side)
Fig. 3
Wall
6mm
7cm
Indoor unit
When installing set to wall, install the accessory wall
bracket at the position shown in Fig. 4, and mount the
set to it.
outdoor unit
Fig. 4
99cm
50cm
24.5cm
Wall bracket
7cm hole
3.5cm hole
12.5cm
2. Installing drain hose
Select whether the drain hose will be
connected to the left or right side (Fig.2). Insert
the drain hose into the drain pan, then secure
the drain hose with a nylon fastener (Fig.5).
Fig. 5
6.5cm
53cm
4.5cm
65.5cm
Side of set
6.5cm
10cm
Drain pan
Nylon fastener
Drain hose
Wrap the insulation (drain hose) around the drain
hose connection. (Fig.6)
Fig. 6
Drain pan
Drain hose
11
Insulation
(Drain hose)
Installation Procedure
Indoor Unit
Be sure to arrange the drain hose correctly so that it is
leveled lower than the drain hose connecting port of
the indoor unit. (Fig.7)
NO
OK
Fig.7
Arrange the drain hose
lower than this portion.
CAUTION:
Do not install the unit drain hose side is too high.
Height A should be less than 5 mm.(Fig.8)
NO
Drain hose
Fig.8
Drain hose
A
B. UNDER CEILING TYPE
Using the installation template, drill holes for
piping and anchor bolts(for holes).(Fig.9)
Fig.9
A
900m
Drilling position
for anchor bolt
Installation
template
200m
Ceilling
Wall
Drilling position
for piping
1.Drilling for piping
Select piping and drain directions. (Fig.10)
Fig. 10
Rear (Install the drain
hose in the direction.)
CAUTION:
Install the drain hose at the rear. It should not be
installed on the top or right side.
Right
When the directions are selected, drill 80mm and 50mm
or 150mm dia. hole on the wall so that the hole is tilted
downward toward the outdoor for smooth water flow.
(Fig.11)
Fig.11
Wall
2.Drilling holes for anchor bolts and installing the
anchor bolts
With a concrete drill, drill four 12.7 mm dia. Holes.
(Fig.12)
Fig.12
60 to 70mm
6mm
12.7mm
Insert the anchor bolts into the drilled holes, and drive
the pins completely into the anchor bolts with a hammer.
(Fig.13)
Fig.13
12
Installation Procedure
Indoor Unit
3. Installing brackets
Fig.14A
Install the brackets with nuts, washers and spring
washers. (Fig.14)
Fig.14B
Bracket (Left)
Spring washer
Special nut
4. Installing indoor unit
Bracket
Fig.15
Reset the hex bolts as shown in Fig.15.
Hex bolt
8 to 13mm
Indoor unit
Apply the indoor unit to the brackets. (Fig.16)
Now, securely tighten the hex bolts in both sides.
Bracket (Right)
Fig.16
Bolt
Bracket
Indoor unit
5. Installing the drain hose
Select whether the drain hose will be connected to the left or right side.(Fig.2)
Insert the drain hose into the drain pan, then secure the drain hose with a nylon fastener.(Fig.5)
Wrap the insulation (drain hose) around the drain hose connection. (Fig.6)
Be sure to arrange the drain hose correctly so that it is leveled lower than the drain hose connecting port of the indoor
unit. (Fig.17)
Fig.17
Remove the hole cover.
Arrange the drain hose
lower than this portion
Drain hose
NO
OK
When drain hose is arranged backward. Secure the drain hose with the VT wire. (Fig.18)
Fig.18
Piping hole
VT wire hole
VT wire
Base (Bottom)
Intake grill
Pass the drain hose through here
Drain hose
Cut the grill
13
Installation Procedure
Indoor Unit
CONNECTING THE PIPING
Table 1
1. Flare processing
(1) Cut the connection pipe with pipe cutters so that the pipe is not deformed.
(2) Holding the pipe downward so that cuttings cannot enter the pipe, remove
the burrs.
(3) Remove the flare nut from the indoor unit pipe and outdoor unit and
assemble as shown in Table1 and insert the flare nut onto the pipe, and
flare with a flaring tool.
(4) Check if the flared part "L" (Fig.1) is spread uniformly and that there are
no cracks.
Model
Pipe
YIFFYC012BAEFA
YIFFYC018BAEFA
Diameter of pipe
Liquid pipe
9.52mm (3/8")
Gas pipe
15.88mm (5/8")
Pipe
Small pipe
Flare nut
Small (width across flats 22mm)
Large pipe
Large (width across flats 24mm)
Fig.1
Width across flats
L dimension
L
Dimension A (mm)
1.4~2.2
A
(5) Capillary accessory should be installed between indoor unit and
connecting pipe. The capillary accessory was put in accessory bag in
indoor unit
2. Bending pipes
The pipes are shaped by your hands. Be
careful not to collapse them.
Pipe expander
OK
NO
Extend the pipe by unwinding it
MOUNT THE COVER PLATE AND THE INTAKE GRILL
1.Mount the cover plate (right)
(1) Cut a pipe exit hole in the right plate. This is only when
the pipe exits from the right side. This operation is not required
when the protrusion is on the top or rear.
(2) Insert the hinges on the bottom of the intake grill into the
holes in the base assembly. Then mount the arms to the
three areas on the top of the intake grill.
Cover plate (right)
(2) Join the cover plate (right) and mount with screws.
31
2. Mount the cover plate (left)
Join the cover plate (left) and mount with screws.
3. Mount the intake grill.
(1) Cut the right side of the intake grill. This is only when
the pipe exits from the right side
14
Installation Procedure
Outdoor Unit
1. Accessories
Edging
"Edging" for protection of electric wires from an opening edge.
2. Selection of the place of installation
Select the place of installation satisfying the following conditions and, at the same time, obtain a consent from the client or
user.
Place where air circulates.
Place free from heat radiation from other heat sources.
Place where drain water may be discharged.
Place where noise and hot air may not disturb the neighborhood.
Place where there is not heavy snowfall in the winter time.
Place where obstacles do not exist near the air inlet and air outlet .
Place where the air outlet may not be exposed to a strong wind.
Place surrounded at four sides are not suitable for installation. A 1m or more of overhead space is needed for the unit.
Mount guide-louvers to place where short-circuit is a possibility.
When installing several units, secure sufficient suction space to avoid short circuiting.
(1) Open space requirement around the unit
L2
Air inlet
L3
500
(Servicing
space)
Air
inlet
Note :
(1). Fix the parts with screws
(2). Don't intake the strong wind directly to the outlet air-flow hole.
(3). A one meter distance should be kept from the unit top
(4). Don't block the surroundings of the unit with sundries
Air outlet
L1
Unit: mm
Case
Distance
L1
L2
L3
I
II
III
open
open
300
150
0
300
500
open
NO
Wind direction
150
(2) Installation where the area with strong winds.
Install the unit so that the air outlet section of the unit must NOT be faced toward wind direction.
3. Installation of outdoor unit
(1) Installation
Fix the unit in a proper way according to the condition of a place where it is installed by referring to the following .
(a) Concrete foundation
(b) Foundation anchor
Unit
Anchor bolt
Unit
Concrete foundation
Concrete foundation
To fix by bolts
Anchor bolt
15
Installation Procedure
Outdoor Unit
(2) Installation sketch of outdoor unit
YIFFYC012BAEFA
YIFFYC018BAEFA
4. Refrigerant piping
(1) Piping diagram
Flare connection
3-way stop valve
Gas pipe
Indoor
unit
Outdoor
unit
Liquid pipe
3-way stop valve (YIFFYC018BAEFA)
2-way stop valve (YIFFYC012BAEFA)
(2) Piping size
90+0.5
YIFFYC012BAEFA
YIFFYC018BAEFA
Liquid pipe
9.52x0.8mm
Gas pipe
15.88x1.0mm
Install the removed flare nuts
to the pipes to be connected,
then flare the pipes.
16
Installation Procedure
Outdoor Unit
Precautions for refrigerant piping
Do not twist or crush piping.
Be sure that no dust is mixed in piping.
Bend piping with as wide angle as possible.
Keep insulating both gas and liquid piping.
Check flare-connected area for gas leakage.
(3) Piping connection
Connecting method (indoor unit)
Apply refrigerant oil at half union as large and flare nut.
To bend a pipe, give the roundness as possible not to crush the pipe.
When connecting pipe, hold the pipe centre to centre then screw nut on by hand, refer to Fig.
Be careful not to let foreign matters, such as sands enter the pipe.
Forced fastening without centering may damage the threads and cause a gas leakage.
Pipe dia
Liquid pipe 6.35mm
Fastening torque
14.2-17.2N.m
32.7-39.9N.m
49.5-60.3N.m
Liquid pipe 9.52mm
Gas pipe 12.7mm
Gas pipe 15.88mm
Gas pipe 19.05mm
61.8-75.4N.m
97.2-118.6N.m
(4) Air discharging method
After finishing connection of refrigerant pipe, it shall perform air tightness test.
The air tightness test adopts nitrogen tank to give pressure according to the pipe connection mode as the following figure shown.
The gas and liquid valve are all in close state. In order to prevent the nitrogen entering the circulation system of outdoor unit,
tighten the valve rod before giving pressure (both gas and liquid valve rods).
Low pressure peizometer
High pressure peizometer
Indoor
Outdoor
Completely tightened
Flare part
Completely tightened
Flare part
Indoor units
3-way valve totally closed
(Gas side)
VL VH
Meter separator
Discharging valve
Manhole
Dropping valve
Nitrogen tank
Outdoor units
3-way valve totally closed (Liquid side) (YIFFYC018BAEFA)
2-way valve totally closed (Liquid side) (YIFFYC012BAEFA)
17
Installation Procedure
Outdoor Unit
Cylinder pressure gauge
43.5PSI(3.0kg/cm2g)
First step:
pressurize over 3 minutes.
2
Second step: 217.5PSI (15kg/cm g) pressurize over 3 minutes.
Large leakage will be found.
Third step: 435PSI (30kg/cm2g) pressurize about 24 hours.
Little leakage will be found.
Check if the pressure drops
The pressure does not drop-passed
The pressure drops-check the leaking point.
From pressurizing to 24 hours later, each 1 difference of
ambient temperature will make 1.45PSI (0.1kg/cm2g)
pressure change. It shall be corrected during test.
Line pressure gauge
Tubing bring brazed
Sweat joint
Large slip-on
connector
Service house
Cylinder of nitrogen
Checking the leaking point
In the first to third test steps, if the pressure drops, check the leakage in each joint use sense of hearing, feeling and
soap water, etc. methods to find the leaking point.
After confirming the leaking point, welding it again or tighten the nut tightly again.
(5) Piping and indoor unit vacuumizing
Use vacuum pump to perform vacuumizing. It is strictly forbidden to use the refrigerant to remove the air inside the
system.
Low pressure peizometer
After air tightness test and discharging all the nitrogen,
High pressure peizometer
connect the vacuum pump as
3-way valve totally closed
the following figure shown.
Indoor
Completely tightened
(Gas side)
Outdoor
Flare part
VL VH
Meter separator
Discharging valve
P
Completely tightened
Flare part
Vacuum pump
Indoor units
Outdoor units
3-way valve totally closed (Liquid side) (YIFFYC018BAEFA)
2-way valve totally closed (Liquid side) (YIFFYC012BAEFA)
It shall use the vacuum pump of (lower than -14.6PSI)high vacuum degree and large air discharging (over 40l/min).
The vacuumizing time depends on the length of the connecting pipe, generally is 1~2 hours.
When vacuumizing, it shall be confirmed both gas and liquid side valves are closed.
If after 2 hours vacuumizing, it cannot reach the vacuum degree below -14.6PSI, it can be vacuumized for other 1 hour.
If after 3 hours vacuumizing, it still cannot reach the vacuum degree below -14.6PSI, check if there is any leaking point
and repair the them.
If after over 2 hours vacuumizing, the vacuum degree is below -14.6PSI, close the VL and VH on the meter separator
and stop vacuumizing. 1 hour later to confirm if the vacuum degree changes. If changes, it indicates there is leaking
point in the system. Check the leaking point and repair.
After finishing the above vacuumizing, change the vacuum pump into refrigerant pump to charge the refrigerant.
(6) Charging amount of refrigerant
When the total length (L) of the two units' connecting pipe is less than 7.5m, it is unnecessary to charge additional
refrigerant.
If the connecting pipe (L) exceeds 7.5m, it shall charge Mg additional refrigerant per meter.
That is: Refrigerant charging amount = (L-7.5) x 50 (g)
Only in COOLING operation can charge the additional refrigerant.
When charging, the refrigerant shall be charged from the charging nozzle of low pressure vavle.
Be carefull when charging refrigerant, do not let the air mix into the system,and must charge the additional refrigerant in
liquid condition.
18
Installation Procedure
Electric wiring
ELECTRICAL WIRING
Connect wiring to the terminal blocks
A. For solid core wiring (or F-cable) (Fig.A)
(1) Cut the wire with a wire cutter or wire-cutting pliers, then strip the insulation to about 25mm of the exposed solid wire.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal board.
(3) Using pliers, bend the solid wire to form a loop suitable for the terminal screw.
(4) Shape the loop wire properly, place it on the terminal board and tighten securely with the terminal screw using a screw
driver.
B. For strand wiring (Fig.B)
(1) Cut the wire with a wire cutter or wire-cutting pliers, then strip the insulation to about 10mm of the exposed strand wiring.
(2) Using a screwdriver, remove the terminal screw(s) on the terminal board.
(3) Using a round terminal fastener or pliers, securely clamp a round terminal to each stripped wire end.
(4) Position the round terminal wire, and replace and tighten the terminal screw using a screw driver.
Loop
Insulation
Strip 10mm
B. Strand wire
Strip 25mm
A. Solid wire
Screw with
special washer
Screw with
special washer
Round
terminal
Round
terminal
Terminal
board
Round
terminal
Wire
Wire
Insulation tube
Fix connection cord and power cable at the cord clamp
Cord clamp
After passing the connection cord and power cable through the insulation tube,
fasten it with the cord clamp, as shown right.
Use VW-1, 0.5 to 1.0 mm thick, PVC tube as the insulation tube.
CAUTION:
Match the terminal block numbers and connection cord colors with those of the outdoor unit. Erroneous wiring may cause
burning of the electric parts.
Connect the connection cords firmly to the terminal block. Imperfect installation may cause a fire.
Always fasten the outside covering of the connection cord with the cord clamp.(If the insulator is chafed, electric leakage
may occur.)
Always connect the ground wire.
Wiring of indoor unit
Electrical component box2
Electrical component box1
1
2
3
YIFFXC012BAEFA
YIFFXC018BAEFA
To outdoor Unit
19
Installation Procedure
Electric wiring
(4) Wiring
1.Remove the cord clamp.
2.Process the end of the connection cords to the dimensions shown in the right figure.
3.Connect the end of the connection cord fully into the terminal block.
4.Fasten the connection cord with a cord clamp.
5.Fasten the end of the connection cord with the screw.
WARNING:
(1) Always use a special branch circuit and install a special receptacle to supply power to the room air conditioner.
(2) Use a circuit breaker and receptacle matched to the capacity of the room air conditioner.
(3) The circuit breaker is installed in the permanent wiring. Always use a circuit that can trip all the poles of the wiring and
has an isolation distance of at least 3mm between the contacts of each pole.
(4) Perform wiring work in accordance with standards so that the room air conditioner can be operated safely and positively.
(5) Install a leakage circuit breaker in accordance with the related laws and regulations and electric company standards.
CAUTION:
(1) The power source capacity must be the sum of the room air conditioner current and the current of other electrical
appliances. When the current contracted capacity is insufficient, change the contracted capacity.
(2) When the voltage is too low and the air conditioner is difficult to start, contact the power company the voltage raised.
WARNING
DANGER OF BODILY INJURY OR DEATH
TURN OFF ELECTRIC POWER AT CIRCUIT BREAKER OR POWER SOURCE BEFORE MAKING ANY ELECTRIC
CONNECTIONS.
GROUND CONNECTIONS MUST BE COMPLETED BEFORE MAKING LINE VOLTAGE CONNECTIONS.
Selection of size of power supply and interconnecting wires.
Precautions for Electric wiring
Electric wiring work should be conducted only by authorized personnel.
Do not connect more than three wires to the terminal block. Always use round type crimped terminal lugs with insulated
grip on the ends of the wires.
Use copper conductor only.
Select wire sizes and circuit protection from table below. (This table shows 20 m length wires with less than 2% voltage
drop.)
Item
Model
Phase
Circuit breaker
Earth leakage breaker
Power source
Overcurrent protector
wire size
Switch breaker
Switch breaker Leak current
rated capacity
(minimum)
(A)
(A)
(mA)
2
(A)
(mm )
YIFFYC012BAEFA
1
30
10
2.5
30
30
YIFFYC018BAEFA
1
30
12
2.5
30
30
e
cal
20
Installation Procedure
Electric wiring
Wiring connection
Make wiring to supply power to the outdoor unit, so that the power for the indoor unit is supplied by terminals.
For the detailed wiring connection with the indoor units, see the corresponding indoor operation and instruction
manual.
YIFFYC012BAEFA
YIFFYC018BAEFA
Y/G
Y/G
Y/G
To Indoor Unit
POWER SUPPLY:
1PH,220V~,50Hz
POWER SUPPLY:
1PH,220V~,50Hz
FIG.1
To Indoor Unit
FIG.2
WARNING
DO NOT CONNECT THE NEUTRAL WIRE N TO R , S OR T PHASE.
INTERCONNECTING WIRES MUST BE WIRED ACCORDING TO FIG.1 FIG.2 INCORRECT WIRING CAUSE EQUIPMENT
DAMAGE.
Wiring procedure
1) Remove set screws on the side before taking off the front panel toward the direction shown in figure.
2) Connect wires to the terminal block correctly and fix the wires with a wire clamp equipped nearby the terminal block.
3) Route the wires in a proper way and penetrate the wires through the opening for electric wiring on the side panel.
21
Test Run
Check items
1. Indoor unit
Is operation of each button on the remote control unit normal?
Does each lamp light normally?
Do not air flow direction louvers operate normally?
Is the drain normal?
2. Outdoor unit
Is there any abnormal noise and vibration during operation?
Will noise, wind, or drain water from the unit disturb the neighbors?
Is there any gas leakage?
Customer guidance
Explain the following to the customer in accordance with the operation manual:
(1) Starting and stopping method, operation switching, temperature adjustment, timer, air flow switching, and other remote
control unit operations.
(2) Air filter removal and cleaning, and how to use air louvers.
(3) Give the operation and installation manuals to the customer.
Test run
CAUTION
THIS UNIT WILL BE STARTED INSTANTLY WITHOUT "ON" OPERATION WHEN ELECTRIC POWER IS SUPPLIED.BE
SURE TO EXECUTE "OFF" OPERATION BEFORE ELECTRIC POWER IS DISCONNECTED FOR SERVICING.
This unit has a function of automatic restart system after recovering power stoppage.
(1) Before starting test run (for Heat pump models)
Confirm whether the power source breaker (main switch) of the unit has been turned on for over
12 hrs to energize the crankcase heater in advance of operation.
(2) Test run
Run the unit continuously for about 30 minutes, and check the following.
Suction pressure at check joint of service valve for gas pipe.
Discharge pressure at check joint on the compressor discharge pipe.
Temperature difference between return air and supply air for indoor unit.
22
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www.johnsoncontrols.com
YHFFXCBB--150414
Johnson Controls reserve the right to change product features without prior notice.

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