Page 1
SYSVRF2
CASSETTE
*%
Cassette
INSTALLATION MANUAL
indoor unit
Page 2
CONTENTS PAGE
1. PRECAUTIONS....................................................................................1
2. INSTALLATION INFORMATION........................................................... 2
3. ATTACHED FITTINGS AND LOCAL PURCHASED COMPONENTS ........3
4.INSTALLATION.....................................................................................4
5. LAYOUT THE DRAIN PIPE.................................................................10
6. INSTALL THE CONNECTING PIPE......................................................11
7. WIRING.............................................................................................13
8. CONTROL OPERATION......................................................................15
9. TEST OPERATION..............................................................................17
1. PRECAUTIONS
Strictly perform installation according to these
installation instructions.
If installation is defective, it may cause water leaks, electric
shocks, or a fire.
When installing the unit in a small room, take measures
to keep the refrigerant concentration from exceeding
allowable safety limits in the event of refrigerant leakage.
Contact the place of purchase for more information.
Excessive refrigerant in a closed ambient environment can
lead to oxygen deficiency.
Only use the attached accessories parts and specified
parts for installation.
Otherwise, it may cause the set to fall, water leaks, or
electrical fires.
Install in a strong and firm location that can with stand
the unit's weight.
If the installation area is not strong enough or installation is
not properly done, the set may fall and cause injury.
The appliance must be installed at least 2.3m above the floor.
The appliance should not be installed in a laundry room.
Before obtaining access to terminals, all supply circuits
must be disconnected.
Comply with local, national and international laws and
regulations.
Read "PRECAUTIONS" carefully before installation.
The following precautions include important safety items.
Strictly follow them.
Keep this manual with the owner's manual in a handy
place for future reference.
The safety precautions listed here are divided into two categories. In
either case, important safety information is listed, which you must
read carefully.
WARNING
Failure to observe a warning may result in death.
CAUTION
Failure to observe a caution may result in injury or
damage to the equipment.
After completing the installation, ensure that the unit operates
properly during start-up. Instruct the customer on how to operate the
unit and keep it maintained. Also, inform customers that they should
store this installation manual along with the owner's manual for
future reference.
The appliance must be positioned so that the plug is
accessible.
The enclosure of the appliance must be marked by word
or symbols, including the direction of fluid flow.
For electrical work, follow the national wiring standards,
regulations, and these installation instructions. An
independent circuit and single outlet must be used.
If the electric circuit capacity is insufficient or electrical work
is defective, an electrical fire may result.
Use the specified cable, connect it tightly and clamp the
cable so that no external force will act on the terminal.
If connection or fixing is imperfect, over-heating or a fire at
the connection point may occur.
Wiring routing must be properly arranged so that the
control board cover is fixed properly.
If the control board cover is fixed imperfectly, it may cause
overheating at the connection point of the terminal, a fire, or
electric shocks.
If the supply cord is damaged, it must be replaced by the
manufacture or its service agent or a similarly qualified
person to avoid a hazard.
An all-pole disconnection switch must have a contact
separation of at least 3 mm, and the poles should be
connected with fixed wiring.
When connecting the pipes, do not let air get into the
refrigeration cycle.
Otherwise, it will lower capacity and may cause abnormally high
pressure in the refrigeration cycle, an explosion, and injury.
WARNING
Only qualified service personnel can install, repair, or service the
equipment. Installation must be performed in accordance with
the requirements of NEC and CEC by authorized personnel only.
Improper installation, repair, and maintenance may result in electric
shocks, short-circuit, leaks, fire or other damage to the equipment.
Do not modify the length of the power supply cord or use
an extension cord, and do not share the single outlet
with other electrical appliances.
Otherwise, it may cause a fire or electric shocks.
Carry out the specified installation work after considering
the possibility of strong winds, typhoons or earthquakes.
Improper installation work may result in the equipment falling
and causing accidents.
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If the refrigerant leaks during installation, ventilate the area
immediately.
Toxic gas may be produced if the refrigerant comes into contact
with fire.
2. INSTALLATION INFORMATION
After completing the installation work, check that the
refrigerant does not leak.
Toxic gas may be produced if the refrigerant leaks into the room
and comes into contact with a source of fire, such as a fan heater,
stove or cooker.
CAUTION
Ground the air conditioner.
Do not connect the ground wire to gas or water pipes, lightning
rods, or a telephone ground wire. Incomplete grounding may result
in electric shocks.
Be sure to install an earth leakage breaker.
Failure to install an earth leakage breaker may result in electric
shocks.
Connect the outdoor unit wires, then connect the indoor unit’s
wires.
Do not connect the air conditioner with the power source until the
wiring and piping is completed.
When following the instructions in this installation manual,
install drain piping to ensure proper drainage and insulate
piping to prevent condensation.
Improper drain piping may result in water leaks and property
damage.
Install the indoor and outdoor units, power supply wiring and
connecting wires at least 1 m away from televisions or radios
to prevent image interference or noise.
Depending on the radio waves, a distance of 1 m may not be
sufficient to eliminate noise.
To install the unit properly, please read this Installation
Manual.
The air conditioner must be installed by qualified personnel.
When installing the indoor unit or its tubing, follow this
manual as strictly as possible.
If the air conditioner is installed on a metal part of the
building, it must be electrically insulated according to the
relevant standards for electrical appliances.
When all the installation work is completed, please turn on
the power only after it has been thoroughly checked.
Notice will not be given regarding any changes to this
manual due to product improvements.
INSTALLATION ORDER
Select the location;
Install the indoor unit;
Install the outdoor unit;
Install the connecting pipe;
Connect the drain pipe;
Wiring;
Test operation.
The appliance is not intended for use by young children or the
elderly without supervision.
Young children should be supervised to ensure that they do
not play with the appliance.
Do not install the air conditioner in the following locations:
Where there is petroleum.
Near salty air (near the coast).
Where there is caustic gas (e.g., sulfide, such as near a hot
spring).
Where the voltage vibrates greatly (in factories).
In buses or cabinets.
In kitchens due to oil vapor.
The appliance should not be installed in a laundry room.
Where there is a strong electromagnetic wave.
Where there are inflammable materials or gas.
Where acid or alkaline liquid evaporates.
Other special conditions.
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3. ATTACHED FITTINGS AND LOCAL PURCHASED COMPONENTS
Please check whether all the following fittings have been included. If there are some spare fittings, please store them carefully.
Table: 3-1 ATTACHED FITTINGS
INSTALLATION FITTINGS
Tubing & Fittings
Drainpipe Fittings
NAME
1. Installation manual
2. Nut
3. Washer
4. Installation paper board
5. Bolt M6
6. Soundproof / insulation sheath
7. Sponge I(250*250*8)
8. Sponge II(60*100*5)
9. Outlet pipe sheath
10. Outlet pipe clasp
11. Tightening band
SHAPE
QUANTITY
1
8
8
1
4
2
1
1
1
1
11
Others
Table: 3-2 LOCAL PURCHASED COMPONENTS
NAME
Copper pipe
PVC pipe
Heat insulation
casing pipe
SHAPE
Liquid side pipe
The external diameter is about 37-39
mm. The inner diameter is 32 mm
The inner diameter corresponds to
the copper pipe and PVC pipe. The
thickness should be 10 mm (above).
It should be thicker in humid areas.
12. Flexible hose tube
Copper (Use for connecting pi-
13.
pes during engineering installation)
14. Protecting bush
15. Connecting wire
SPECIFICATIONS
Air side pipe
Refer to Table: 6-1, Table: 6-2
QUANTITY
Select according to
actual needs
Select according to
actual needs
Select according to
actual needs
1
1
3
1
REMARK
Used for connecting the indoor unit
refrigerant system and use flexible
copper pipe (T2M)
Used to drain the water in the
indoor unit
Used to prevent condensation
Expansible hook
Installation hook
M10
M10
4
4
Used to install the indoor unit.
Used to install the indoor unit.
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4. INSTALLATION
4.1 Installation place
(Refer to Fig. 4-1, Fig. 4-2, Fig. 4-3 and Table: 4-1 for specification.)
The indoor unit should be installed in a location that meets
the following requirements:
Avoid narrow spaces that are sensitive to noise.
The ceiling must be flat and able to bear the weight of the
indoor unit.
The outlet and the inlet must not be impeded and there
must be minimal influence from the outside air.
The air flow extends throughout the room.
The connecting pipe and drainpipe can be removed
easily.
There is no direct radiation from heaters.
Do not install it in places where the air has high salt
content. If this can't be avoided, choose an anticorrosive
model.
CAUTION
Installing the equipment in any of the following places may lead to
equipment faults: (If this is unavoidable, consult the supplier.)
A. The site contains mineral oils such as cutting lubricant.
B. Where the air is salty, e.g., on the coast.
C. Hot springs and where there are corrosive gases, e.g., sulfides.
D. Factories where the supply voltage fluctuates greatly.
E. Inside a car or cabin.
F. Places like kitchens where there’s a lot of oil.
G. Places with strong electromagnetic waves.
H. Places where flammable gases or materials exist.
I. Places where acid or alkali gases evaporate.
J. Other special environments.
> 1000 mm
> 1000 mm
> 1000 mm
> 1000 mm
Fig. 4-2
4.2 Air supply direction
Select the following air supply directions based on your room
and installation site:
Connect to the outlet
of drain pipe
H
Ceiling
Air outlet Air inlet Air outlet
>2500mm
Floor
Table: 4-1
Indoor unit
≤ 8000 W
≥ 9000 W
A
910 mm (Ceiling hole)
A(mm) H(mm)
230
300
≥260
≥330
Connective port of
the refrigerant pipe
(Air side)
Connective port
of refrigerant pipe
(Liquid side)
Panel
Fig. 4-1
Fig. 4-3
1. Once you change the air supply direction, please replace the
wind shield materials. For details of wind shield materials, please
consult our dealer.
2. In relation to the air supply direction, remove the panel before
installing the wind shield material, and then insert the wing shield
panel into air outlet of main body.
Main body
Wind shield panel
Fig. 4-4
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WARNING
Install the unit in a location that can bear its weight.
Insufficient support will cause the unit to fall, which may cause
injury.
Special installation methods can prevent the unit be blown around
by strong winds or shocked by earthquakes. Improper installation
can cause an accident.
4.3 Install the main body
3
Refer to 3 mentioned in the existing ceiling.
4
Remove the installation paper board.
Unit body
Central hole
The existing ceiling (to be horizontal)
1
Cut a quadrangular hole of 910 x 910 mm in the ceiling
according to the shape of the installation paper board.
(refer to Fig. 4-4, Fig. 4-6 and Fig. 4-7)
The center of the hole should be in the same position the air
conditioner body’s center.
Determine the lengths and outlets of the connecting pipe,
drainpipe and cables.
To balance the ceiling and to avoid vibration, please reinforce
the ceiling when necessary.
2
Select the position of the installation hooks according to the
hook holes on the installation board.
Drill four holes of 12 mm, 45-50 mm deep at the selected
positions on the ceiling. Then embed the expansible hooks.
Face the concave side of the installation hooks toward the
expansible hooks. Determine the length of the installation
hooks from the height of ceiling. Then cut off the unnecessary
part.
If the ceiling is extremely high, determine the length of the
installation hook according to facts.
3
Adjust the hexangular nuts on the four installation hooks
evenly to ensure the balance of the body.
If the drainpipe is incorrectly installed, leaks will be caused by
the malfunction of the water-level switch.
Adjust the position to ensure the gaps between the body and
the four sides of ceiling are even. The body's lower part
should sink into the ceiling to a depth of 10-12 mm (refer to
Fig. 4-9).
Locate the air conditioner firmly by wrenching the nuts after
having adjusted the body's position. (Refer to Fig. 4-10)
Screw M6×12
(Accessories)
Install the paper board
Fig. 4-5
CAUTION
Before installing the indoor unit, first remove the buffer between
the fan and flared mouth. Otherwise, the fan motor will be
damaged (See Fig. 4-6).
Ensure that the indoor unit is placed horizontally.
Newly built houses and ceilings
1
In the case of new built house, the hook can be embedded in
advance (refer to 2 mentioned in the existing ceiling). But it
should be strong enough to bear the indoor unit and not
become loose because the concrete has shrunk.
After installing the body, fasten the installation paper board onto
2
the air conditioner with bolts (M6X12) to determine in advance
the sizes and positions of the hole opening on the ceiling.
(Refer to Fig. 4-5)
Please guarantee the horizontal flatness of the ceiling when
installing it.
Refer to 1 mentioned in the existing ceiling.
Fig. 4-6
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(Unit: mm)
Φ75New air
supply orifice
Φ32Drain pipe outer diameter
Fig. 4-7
Install the hanger
Hexagon nut
(Adjust to balance)
Ceiling
Ceiling
Panel
Main body
Main body of the unit
10-12mm
≥20
146
46
Fig. 4-8 Fig. 4-9
Table: 4-2
Indoor unit model
≤ 8000 W
≥ 9000 W
A(mm) B(mm)
230
300
Drain pipe
126
197
Fig. 4-10
Fig. 4-11
NOTE
All illustrations in this manual are for reference only. They may be slightly different from the air conditioner you purchased
(depending on the model). Refer to the actual shape.
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4.4 Procedure for installing the pendant bolt
Based on the unit structure, set the screw-pitch according to the
size of the following figures:
Table: 4-3
Wooden structure
Wooden structure
CAUTION
The bolt is high-quality carbon steel (galvanized or coated with
other anti-rust materials) or stainless steel.
The ceiling anti-rust measures must be conducted in line with
actual construction. For details, consult a building engineer.
Suspending bolts must be fixed.
Put rectangular sticks across the beams and set pendant bolts.
Wooden span
Beam
Ceiling
Pendant bolt
Old concrete roughcast
Use embedded bolts and embedded pulling plugs.
Table: 4-4
4.5 Install the panel
CAUTION
Never put the panel face down on floor or against the wall,
or on irregularly shaped objects.
Never drop or strike it.
1. Remove the air-in grill.
1) Slide two grill switches toward the middle at the same
time, and then pull them up. (Refer to Fig.4-12)
Grid switch
Fig.4-12
2) Draw the grill up to an angle of about 45, and remove it.
(Refer to Fig.4-13)
Steel beam and girder structure
Set and use supportive angle steel.
Suspended bolt
Pendant bolt
New concrete roughcast
Set it with embedded bushes or embedded bolts.
Flap type insert Slide type insert
Supportive angle steel
Concrete iron
45°
Fig.4-13
2. Remove the installation covers at the four corners.
Wrench off the bolts, loosen the rope of the installation covers,
and remove them. (Refer to Fig.4-14)
fig.4-14
Embedded bolt
(With embedded
bolt in pipe)
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3. Install the panel
1) The part of the panel marked “PIPING SIDE” and “DRAIN SIDE” must
be aligned with the piping outlet and drainpipe outlet from the main body.
2) Fix hooks of the panel at the swing motor and its opposite sides to
the hooks of the corresponding water receiver. (Refer to Fig.4-15 a)
Then hang the other two panel hooks onto the corresponding
hangers of the body(Refer to Fig.4-15 b). Use the protecting bush to
protect the motor line after connecting.
3) Insert the conducting wire of the sway motor into the conducting
slot inside of panel. Then, connect the sway motor terminals’ holder
to the terminal in the main electric control box.
4) Adjust the four panel hook screws to keep the panel horizontal,
and evenly screw them into the ceiling. (Refer to Fig.4-15 c)
5) Regulate the panel in the direction of the arrow in Fig 4-14 slightly
to fit the panel's center to the center of the ceiling's opening.
Guarantee that the hooks of the four corners are fixed well.
6) Keep fastening the screws under the panel hooks until the
thickness of the sponge between the body and the panel's outlet has
been reduced to about 4-6mm. The edge of the panel should touch
Piping joint
Panel hook
Water receiver hook
CAUTION
1) Insert the sealant plastic cap in the sway motor in the notch of
the water outflow pipe seal board.
2) Do not coil the wiring of the swing motor into the seal sponge.
3) Malfunction described in Fig.4-17 can be caused by
inappropriate tightness the screw.
Leakage
Ceiling
Pollution
4) If the gap between the panel and ceiling still exists after
fastening the screws, the height of the indoor unit should be
modified again. (Refer to Fig.4-18)
Water condensation
Fig.4-17
Drain pipe joint
Sway motor
Sway motor
Ceiling
d
body
Protecting bush
Tightening band
outlet foam
a
b
c
Hook-bolt
Cross-screwdriver
Fig.4-15
6mm
4
Gap not allowed
Fig.4-18
5) You can modify the height of the indoor unit through the
openings on the panel's four corners, if the lift of the indoor unit
and the drainpipe is not influenced (refer to Fig.4-19).
Loosen upper nut
Adjust lower nut
Fig.4-19
4. Hang the air-in grill to the panel. Then, connect the lead
terminator of the swing motor and that of the control box
with the corresponding terminators on the body.
panel sponge
panel
panel foam1
air out
Fan
panel foam 2
Fig.4-16
5. Re-install the air-in grill in reverse order.
6. Re-install the installation cover.
1) Fasten the rope of the installation cover on the bolt of the
installation cover. (Refer to Fig.4-20)
2) Press the installation cover into the panel lightly. (Refer to
fig.4-21)
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Slug
Installation cover’s rope
Tap screw
4.6 Install the distribution duct
Conditioned air can be distributed by a distribution duct.
C
B
58
Distribution duct
A
Fig.4-20
Fig.4-20
Distribution duct
Slide the four sliders in
the corresponding
channel when installing
the cover.
Fig.4-21
NOTE
Model Series
Series A=350 mm; Series B=85 mm
2800-8000W Series C=107 mm; Series D=126 mm
Series E=121 mm; Series F=145 mm
Series A=350 mm; Series B=155 mm
9000-14000W Series C=107 mm; Series D=197 mm
Series E=121 mm; Series F=145 mm
199
Distribution duct
A
Φ75
D
Distribution duct
B
C
A
■ In case of one duct connection
The air volume in duct is around 300-360 m3/h for 5600 W to 8000 W unit
The air volume in duct is around 400-640 m3/h for 9000W to 14000W unit
The max. length of duct is 2 m
The original air outlet with the same direction of duct should be sealed
■ In case of two duct connection
The air volume in one duct is around 200-260m3/h for a 5600 W to 8000 W unit
The air volume in one duct is around 300-500m3/h for a 9000W to 14000W unit
The max. length of duct is 1.5 m for one duct
The original air outlet with the same direction of duct should be sealed
The side with electrical
throttle cannot be connected
to the distribution duct.
Fresh air
E
F
258
Fig.4-23
B
C
Fig.4-22
Fig.4-24
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5. LAYOUT THE DRAIN PIPE
5.1 Install the drain pipe of the indoor unit
1) The drainpipe can use PVC pipe. (The external diameter about
37-39 mm. The inner diameter is 32 mm.)
2) Joint drainpipe connector to the end of the water pumping pipe.
Fix the drainpipe together with the water outflow pipe and thermal
insulation tube by clasping the water outflow pipe (attached).
CAUTION
CAUTION
Don’t force water-pumping pipe or you might crack it.
3) The water-pumping pipe and drainpipe from the main body must
be evenly wrapped with insulation tube and bound tightly with a
band to stop air from getting in and also coagulation.
4) Prevent water backflow into unit during shutdown. The drain
pipe must be placed downwards and water drained to outdoors
(drain side). The gradient of the drain pipe should be higher than
(1/100), without salination and water remaining. (Refer to Fig.5-1 a)
CAUTION
The joints in drain system must be sealed to avoid water leaks.
9) The height from the floor to the end of the drainpipe or the
bottom of drain slot must more than 50 mm. Don’t immerse the
end of the drainpipe or the bottom of the drain slot into water.
When draining condensation, bend the drainpipe into a U-shaped
hydroseal to avoid odor transferring from the drainpipe to indoors.
0.8-1.0 m
Gradient: >1/100
a
5) When connecting the drainpipe, do not drag the pipe attached to
the main unit. For this, arrange bearing points at every 0.8 to 1.0
meter to avoid bending the pipe (See Fig.5-1 b).
6) When connecting a length of drainpipe, apply protective tube to
wrap its indoor parts to connect it tightly.
7) If the drainpipe outlet is higher than the pumping connective pipe
of the main body, the drainpipe must be arranged upwards
vertically by using connective assembly of the water outlet for
vertical bending. The height of the drainpipe must be set to the
defrosting pan surface no more than 1000 mm. Too much backflow
during shutdown would lead to overflow (Refer to Fig.5-2).
8) Based on the actual requirements for bending the pipe, use the
connective assembly of the water outlet in the terminal box for pipe
layout.
C200 mm
50-100 mm
Connective assembly of the water outlet
≤200 mm
50-100 mm
b
b
Main drainpipe
>1.0 m
Fig.5-1
≤200 mm
50-100 mm
Max. 1000 mm
Gradient: 1/50-1/100
Drainpipes from many units converge and discharge water to and from the main drainpipe.
10
Fig. 5-2
Page 12
5.2 Drain test
1. Before testing, ensure that water can drained well and check all
joints are sealed.
2. The drainage test must be done before constructing the ceiling
of a new house.
1) Remove the water finding cap, charge 2000 ml water into a
defrosting pan through the water orifice by a water charged pipe.
(See Fig. 5-3)
2) Power on the unit and run cooling mode. Check that the noise of
the water drain pump is normal and that water discharges well.
(Depending on the length of the drainage pipe, it may take about
one minute for water to start draining.) Then, check whether the
joints leak.
Pumping pipe
Water finding cap
Water finding orifice
6. INSTALL THE CONNETING PIPE
6.1 The connective length of indoor and outdoor piping
and those height difference requirements.
Connect to different outdoor units with a different connective length
based on height difference requirements. Please refer to Indoor Unit
Installation Manual for details.
6.2 Piping materials and size
1) Piping materials: Copper tube special for air conditioner, normally
T2M.
2) Piping size: Refrigerant is R410A, please refer to Table: 6-1
Table: 6-1
Indoor unit model
≤4500W
Piping size (mm)
Liquid side
Air side
φ6.4 φ12.7
Main body
Defrosting pan
Water charged pipe
Drain plug
Fig. 5-3
CAUTION
If an error occurs, solve the problem asap.
3) Stop the air conditioner and check for the problem in about 3
minutes. Improperly setting the drainpipe can lead to water
backflow and cause the alarm detector in the control box flash
or water to overflow from the defrosting tray.
4) The alarm will flash if water level exceeds the alarm threshold. Please check whether the drain pump is in water discharge
mode. If the level does not decrease to under the alarm
threshold within 3 minutes, the unit will close down. You must
switch of the power and discharge the accumulated water. Then,
the unit can restart normally.
≥5600W
Applicable for models that use R410A refrigerant
φ15.9φ9.5
6.3 Procedure for connecting pipes
1. Measure the required length of the connective pipes and configure
them as per the following procedure. (Refer to the Pipeline Connection for details)
1) Connect the indoor unit first, and then connect the outdoor unit.
a. The pipe bend should be handled carefully to prevent damaging
the pipe and insulation layer.
b. Before fastening the flared nut, apply refrigerant oil on the outer
surface of the pipeline flare and the taper surface of the connection
nut. Rotate the nut for 3-4 times before fastening it (see Fig.6-1).
Apply refrigerant oil
Fig.6-1
c. When connecting or disconnecting the pipe, use two wrenches at
the same time.
d. Do not rest the weight of the connective pipe on the adapter for
the indoor unit. Excessive load on the adapter of the indoor unit may
deform the pipe and thus affect the cooling/heating effect.
5) Cut off the power, discharge the accumulated water, and
reset the test cap to its original position.
CAUTION
A drain plug at the bottom of main unit is used for discharging
any accumulated water in the defrosting tray when an error
occurs. During normal operations, ensure that this plug is
inserted tightly to prevent water leaks.
2) The valve of the outdoor unit should be closed completely (as in
factory status). Every time when connecting the pipe, screw the
valve nut, and connect the flared pipe (within 5 minutes). If the nut is
left loose for a long time on the valve, dust and other foreign
substances may enter the pipeline system and lead to fault.
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3) After the refrigerant pipe is connected to the indoor and outdoor
units, expel air as instructed in the “Expel air” section. After expelling
the air, screw the nut in the maintenance hole. a. Precautions for the
flexible part of the pipeline
i. The bend angle must not exceed 90°. (See Fig.6-2)
6.4 Pipeline connection
1. Flare
1) Use a pipe cutter to cut off the pipe (See Fig.6-4)
Use your thumb to bend the pipe
Minimum radius 100 mm
Fig.6-2
ii. The bend shall be preferably in the middle of the pipe length and
higher bend radiuses are preferred.
iii. Do not bend the flexible pipe more than 3 times.
b. Bend the thin-wall connective pipe (See Fig.6-3)
Method for unravelling the spooled pipe.
Straighten the pipe end
Fig.6-3
i. When bending the pipe, cut out a notch at the desired size at the
bend of the adiabatic pipe, and then expose the pipe (wrap the pipe
with the wrapping tape after bending it).
ii. The radius of the elbow pipe should be as large as possible to
prevent flattening or crushing.
iii. Use the pipe bender to close the elbow pipe.
°
±
A
4
45
Burr
°
±
2
R0.4~0.8
Fig.6-4
Coarse
Slant
90
2) Pull the pipe into the rear flare of the connective nut. (Refer to
Table: 6-3)
Table: 6-3
Outer
diameter
(mm)
φ6.4
φ9.5
φ12.7
φ15.9
φ19.1
A(mm)
Max. Min.
8.7
12.4
15.8
19.0
23.3
8.3
12.0
15.4
18.6
22.9
90
c. Buy and use a copper pipe
When the copper pipe is purchased from the market, use the same
type of heat insulation materials (with a thickness of over 9 mm).
2. Deploy the pipelines
1) Drill a porthole on the wall, and put the hole sheath and hole
cover through the wall.
2) Place the connective pipe together with the indoor & outdoor
connection wires. Use wrapping tape to tie them tightly. Do not let
air enter or condensation will form.
3) Pull the connective wrapped connective pipe from outdoors
through the sheath, through the wall, and lead it into the room.
3. Make a vacuum from the connective pipeline.
4. After the above steps are completed, the spool of the valve of
the outdoor unit should be completely open, and the refrigerant
pipeline of the indoor unit and the outdoor unit should be smooth.
5. Use a leak detector or soapy water to detect leaks.
6. Put on an adiabatic envelope (accessory) on the connective
pipe adapter for the indoor unit and wrap it tightly with wrapping
tape to prevent condensation from forming and leaks.
2. Tighten the nut
Align with the connective pipe, start fastening the connection pipe
nut by hand and use a spanner to tighten it as shown in Fig.6-5.
Fig.6-5
CAUTION
According to the installation conditions, excessive torque will
damage the flaring and too little will lead to looseness and leaks.
Determine the tightening torque by referring to the table: 6-4.
Table: 6-4
TorqueTubing size
Φ6.4mm
Φ9.5mm
Φ12.7mm
Φ15.9mm
Φ19.1mm
14.2~17.2 N.m (144~176 kgf.cm)
32.7~39.9 N.m (333~407 kgf.cm)
49.5~60.3 N.m (504~616 kgf.cm)
61.8~75.4 N.m (630~770 kgf.cm)
97.2~118.6 N.m (990~1210 kgf.cm)
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CAUTION
Be cautious when installing the connective pipe. Do not let any
air, dust or other foreign substance enter the system.
Pipe connections should be conducted after the indoor and
outdoor unit are fixed.
Connective pipes must stay dry during installation.
Connective copper pipes must be wrapped with an insulation
layer (at least 9 mm thick).
The temperature of the refrigerant circuit will be high. Keep the
interconnection cable away from the copper tube
Unit body
7. WIRING
7.1 Electrical wiring
Cut top-down
Field piping side
Subsidiary belt for the
thermal insulation pump
Fig.6-6
6.5 Air expels
Apply the vacuum pump to expel air from refrigerant charging
vent from the air side in the outdoor unit.
Do not apply the refrigerant inside the indoor unit for vacuum
air.
6.6 Open valve
Use a 5-mm hexagon wrench to open the valve spool of the
indoor and outdoor units.
6.7 Leak detection
Use soapy water to check whether gas is leaking from the
adapters
6.8 Thermal insulation
To install the thermal insulation for the air side and liquid side
piping. Complete insulation is required for the air side and liquid
side piping because the ambient temperature is very low in
cooling mode.
1) Thermal insulation of at least 120
air side piping.
2) Apply the attached thermal insulation material to wrap the
connective part of the indoor piping tightly without any gaps.
°C material is required for the
CAUTION
1) Special power must be applied within the rated voltage
range. The external circuit of this air conditioner must be
grounded. The power cable of the outdoor unit must be jointed
with external grounding wire and reliable.
2) Wiring up the electrics must be performed by professionals
and completed according to the wiring label.
3) Fixing circuit must be wired with an 11-pole disconnection
device with at least 3 mm switching distance from contact.
4) Set the electrical leakage device according to national
regulations.
5) Power cables and signal wires must be arranged in an
ordered manner so they do not interfere with each other or
come into contact with connective pipes and the body of valves.
6) The attached connective wire is 10 m. If this is not long
enough, replace it with a longer one at the same specifications.
Normally, do not overlap the two wires, except for welding them
and insulating them with an adhesive band.
7) An all-pole disconnection device, which has at least 3 mm
away from all poles and a residual current device (RCD) with a
rating of above 10 mA, must be incorporated in the fixed wiring
scheme and comply with national regulations.
8) When the wiring is completed, start up the power once you
have confirmed that all wires are correctly connected and fix
tightly.
7.2 Power specifications
The power cable specifications are as follows. Too low power capacity may overheat the piping and burn out the unit.
Table 7-1
Power supply for the indoor part
Connect wiring
Item
Signal wire for the
indoor and outdoor units
Wire diameter
Shielded wire
2
3 X 0.75 mm
Model:
2800W-14000W
Power supply:
Signal-phase
220-240 V~ 50 Hz
220-240 V~ 50/60 Hz
Power switch
Capacity
15A
Safety
fuse
15A
Power cable
≤
20 m
2X2.5 mm
2
2X4.0 mm
≤
50 m
13
Ground Line
Signal line
2
2.0 mm
2
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7.3 Indoor unit power
7-3-1 A special power supply is employed for indoor units that is different from the outdoor units’ supply.
7-3-2 Use a universal indoor power supply and electricity leakage protection devices and operating switches for indoor units that connect to the
same outdoor unit.
Outdoor power
supply
Indoor power
Signal wire for communicate
indoor unit and outdoor unit
RCCB
Grounding line
RCCB
Grounding line
Wire slot
Indoor unit
Fig. 7-1
7.4 Signal wire for communicate indoor unit and outdoor unit
This wire must be connected based on terminals’ numbers. A connection error could lead to a unit malfunction.
7.5 Jointing part of wire
Apply the attached thermal insulation material to seal pipe joints. Failure to seal will lead to condensation.
7.6 Wires in the panel
Wire the wire holder of the swinging motor according to (5.4). Install the panel.
7.7 Settings diagram for the terminal holder
Please refer to the nameplate in each indoor unit for the connective method.
Signal-phase power supply model
L
N
L
Indoor Unit Power
N
Indoor Unit Power
P Q E
To outdoor/indoor
units comm. bus
To outdoor/indoor
units comm. bus
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（X1 X2）
To wired controller
comm. bus
8. CONTROL OPERATION
8.1 Horsepower settings
8.2 Network address settings
1) The network address is set based on communication
between the indoor and outdoor units. The address is the same
as the indoor address, and there is no need to set them
separately.
2) The central control of indoor units can be done on an
outdoor unit. There is no need to control indoor unit separately.
3) For previous control of the indoor units, the network can be
set by connecting (X, Y, E) terminals. There is no need to set
the network address. The network can also be set by outer
network module and main board (CN20).
Horsepower code
PO WE R_S
F
E
0
1
D
2
C
B
3
4
A
5
9
6
8
7
ENC1
Based on different purposes for setting the switch cords on the PC
panel of the indoor electrical control box. Once you complete the
settings, please restart the main power supply for the settings to
become active.
Table: 8-1
ENC1
Note: Only
licensed
maintenance
personnel can
alter the cooling
output that is
set before
shipping.
Switch For setting the cooling output
Switch cord
0
1
2
3
4
5
6
7
9
A
B
Setting the cooling output
2200 W
2800 W
3600 W
4500 W
5600 W
7100 W
8000 W
9000 W
10000 W8
11200 W
12500 W
14000 W
8.3 Error Content
Error Content
No address at the first
power on
Mode conflict
Comm. error with outdoor unit
Temp. sensor (T1)) error
Temp. sensor (T2) error
Temp. sensor(T2B) error
DC fan error
Outdoor unit error
EEPROM error
EEV coil error
Water level alarm
Error
Code
FE
E0
E1
E2
E3
E4
E6
Ed
E7
Eb
EE
CAUTION
The system has a total of 64 units (0-63). Each has only one
system address code. If an address is duplicated, an error
will occur.
Switch off the power before configuring the settings, or an
error will occur.
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8.4 Main board Code designation
SW1definition
SW3definition
SW5 definition
0 means the cooling mode temperature
compensation is 0°C (default)
1 means the cooling mode temperature
compensation is 2°C
0 means EEV positions 96 (steps)
in standby in heating mode
(default)
1 means EEV positions 72 (steps)
in standby in heating mode
0 means no action (default)
1 means clear indoor unit address
Reserved (defaults 0)
00 means shutting down the unit to
"stop cold air" at 15°C (default)
SW2definition
Reserved (defaults 0)
SW4definition
00 means the time for stopping the
TERMAL fan is 4 minutes (default)
01 means the time for stopping the
TERMAL fan is 8 minutes
10 means the time for stopping the
TERMAL fan is 12 minutes
11 means the time for stopping the
TERMAL fan is 16 minutes
SW6 definition
00 means the temp. compensation
value is 6°C in heat mode (default)
SW7 definition
J1 definition
01 means
"stop cold air" at 20
10 means shutting down the unit to
"stop cold air" at 24
11 means
"stop cold air" at 26°C
Reserved (defaults 0)
Reserved (defaults 0)
Without jumper “J1” for the auto
restart function
With jumper “J1” for the non-auto
restart function
shutting down the unit to
°C
°C
shutting down the unit to
0/1 definition
ON
ON
01 means the temp. compensation
value is 2°C in heat mode
10 means the temp. compensation
value is 4°C in heat mode
11 means temp. compensation value
is 0°C in heat mode (follow me)
Means 0
Means 1
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9. TEST OPERATION
1
Testing must be carried out after installation is completed.
2
Please confirm the following points before the test:
The indoor unit and outdoor unit are installed properly.
The tubing and wiring have been correctly completed.
The refrigerant pipe system has been checked for leaks.
Drainage is unimpeded.
The heating insulation works well.
The ground wiring is connected correctly.
The length of the tubing and the added stow capacity of
the refrigerant have been recorded.
The power voltage fits the rated voltage of the air
conditioner.
There is no obstacle at the outlet and inlet of the outdoor
and indoor units.
The gas side and liquid side stop valves are both open.
The air conditioner is pre-heated by turning on the power.
3
According to the user's requirements, install the remote
controller frame where the remote controller's signal can
smoothly reach the indoor unit.
4
Test operation
Set the air conditioner in "COOLING" mode with the remote
controller, and check the following points. If there is an error,
please resolve it according to the chapter "Troubleshooting" in
the "Owner's Manual".
1) The indoor unit
a. Whether the switch on the remote controller is working well.
b. Whether the buttons on the remote controller is working well.
c. Whether the air flow louver moves normally.
d. Whether the room temperature is adjusted properly.
e. Whether the indicator lights normally.
f. Whether the temporary buttons works well.
g. Whether drainage is normal.
h. Whether there is vibration or abnormal noise during
operation.
I. Whether the air conditioner heats well in
HEATING/COOLING mode.
2) The outdoor unit
a. Whether there is vibration or abnormal noise during
operation.
b. Whether the generated wind, noise, or condensation
produced by the air conditioner affect your neighbors.
c. Whether any refrigerant leaks.
CAUTION
A protection feature prevents the air conditioner from being
activated for approximately 3 minutes when it restarts after
shut off.
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16126000002969 V5.0
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