Cabinet unit
Operation Manual
CONTENTS
HPU-90CA03T3
Name of Parts
1
(Cooling Unit)
Parts and Functions
Operation points
Safety Precautions
Operation
2
3
4
5-6
7
Users' Attention
Maintenance
8-9
10
Trouble shooting
When problems occur
When troubles occur
Installation instruction
Installation procedure
Others
11
12
13-14
15-26
27-28
No.0150504455
A
Parts and Functions
6
7
TEMP
TEMP
FAN
ON/OFF
MODE
2
1
8
5
4
3
1.Power ON/OFF Button
Used for unit start or stop
2.FAN Button
Used to select fan speed:AUTO,LOW,MID,HIGH.
3.TEMP Setting Button
Used to set temperature. (Setting ranges: 16 C to 30 C)
4.MODE Button
Used to select operation mode: AUTO COOL DRY FAN HEAT
5.Operation MODE Display
Mode
AUTO
COOL
DRY
Panel
FAN
HEAT
6.FAN SPEED Display
AUTO(Flash) LOW
MID
HIGH
7.LOCK State Display
8.TEMPERATURE Display
Used to display set temperature and room temperature.
2
Operation points
Anti-cold air blowing out
Operation of air conditioner
During Heating operation, after starting the
unit, the indoor fan motor will not rotate
When the ambient humidity is too high,
in COOLING or DEHUMIDIFYING
MODE
F
AN
SWING
TEMP
CLOCK
SET
TIMER
SLEEP
F
I
L
T
E
R
R
E
R
S
E
SET
ON/OFF
MODE
F
A
N
SWING
TEMP
CLOCK
SET
TIMER
SLEEP
RESET
FILTER RESET
ON/OFF
immediately to prevent cold air from blowing
out.
mode, there may be water dropped in the
air outlet.
?
Defrosting function
3-minute protection function
If start the unit immediately only During Heating operation, when frost formed on the
after it is turned off, the compressor
will start after 3 minutes have
elapsed to protect the compressor.
heat exchanger of outdoor unit, the air conditioner
will defrost automatically for several minutes. During
defrosting, both the fan of indoor and outdoor unit
do not run. After finishing defrosting, the air
conditioner will automatically resume operation.
MODE
F
A
N
SWING
TEMP
CLOCK
SET
TIMER
SLEEP
F
I
L
T
E
R
R
E
S
RESET
ON/OFF
Change of fan speed
Hint
When the air conditioner
is in Heating mode, it
absorbs heat from
outside and release to
indoors. So the outdoor
temperature may affect
the Heating effect.
In COOLING mode, the air sending is set at AUTO,
when the indoor temperature is near the set temperature,
the fan speed will lower automatically.In HEATING
mode, when room temperature reaches the set temperature,
the compressor will stop running, and the fan will change
to LOW FAN or stop.In DEHUMIDIFYING mode, the fan
speed will change automatically.
MODE
F
A
N
SWING
TEMP
CLOCK
SET
TIMER
SLEEP
F
I
L
T
E
R
R
E
R
S
E
SET
ON/OFF
3
Safety Precautions
Notice
Do not put the fire
devices in the places,
which the air from
the air conditioner
can directly blow.
Do not put or use any
spray near the air
conditioner, and do not
directly spray to the air
conditioner.
The system should never be
used for any other purposes
than intended such as for
preservation of food, flora
and fauna, precision devices
or work of art.
It may cause the fire
devices cannot burn
completely.
It may cause deterioration of
the articles.
Otherwise it may cause
fire.
Only use the proper specified fuse.
Do not install the system where the air
outlet may directly reach the flora and
fauna.
If use metal wire or copper wire to
replace the fuse, it may cause trouble
and fire accident.
It will not be good for their health.
Do not use the pow-
er switch to turn on
or off the air condit-
ioner.
When operating the system sim-
When cleaning, please
stop the unit and cut o-
ff the power first.
Do not perform
cleaning, when the
indoor fan motor is
rotating in high
speed.
ultaneously with a combustion
apparatus, indoor air must be v-
entilated frequently.*
ON
OFF
It may cause fire or
Creepage.
Insufficient ventilation may ca-
use the danger of lack of oxygen.
Do not use such equipment as a water heater,
etc., around the indoor unit
or the wire controller.
Do not put the water containers,
such as vase, on the unit.
If the water enters
If the system is operated at the vicinity of such
equipment that generates steam, condensed
water may drip during cooling operation or it
may cause Creepage or short-circuit.
into the unit and damages
the electric insulation material,
it may cause electric shock.
Safety precautions when moving, reinstalling and repairing the air conditioner
Warning
Do not refit the air conditioner.
When repair is needed, please
contact your dealer.
When moving the air conditioner to another
installation place, please contact the dealer
or the professional installer.
Improper repair may
cause water leakage,
Improper moving and reinstallation may cause
water leakage, electric shock and fire accident.
electric shock and fire accident.
Applicable ambient temperature range:
Maximum:
Minimum:
32 / 23
18 / 14
D.B / W.B
D.B / W.B
Indoor
Cooling
Maximum:
Minimum:
D.B / W.B
D.B
52 / 32
21
Outdoor
4
Operation
AUTO, COOL , HEAT and DRY Operation
LOCK
TEMP
TEMP
FAN
ON/OFF
MODE
5
4
1. Unit start
Press ON/OFF button,unit starts.
Previous operation status appears on LCD (except for TIMER,SLEEP and SWING setting)
2.Select operation mode
Press MODE button. At each press, operation mode changes as follows:
AUTO
COOL
DRY HEAT
FAN
Then select AUTO run or select COOL operation or select DRY operation or select HEAT operation
or select FAN operation
3.Temperature setting
Press TEMP button.
Every time the button is pressed, temp. setting increases 1 C; if the button is kept pressed, temp. setting will
increase quickly.
Every time the button is pressed, temp. setting decreases 1 C, if the button is kept pressed, temp. setting will
decrease quickly.
Set proper temperature
4.Adjust FAN button
Press FAN button. At each press, fan speed changes as follows:
COOL operation starts
when room temp.is
higher than temp.
setting.
Ultra-low air flow
AUTO(Flash)
MID
HIGH
LOW
Temp. setting +2 C
Temp.setting
Air conditioner will run at the selected fan speed.
On reaching temp.setting
+2 C, unit will run in mild
DRY mode.
5. Unit stop
Press ON/OFF button,unit stops.
In FAN mode, the temperature setting is not displayed on LCD,and "Auto Fan" not available.
In DRY mode, when room temperature becomes 2 C higher than temperature setting, unit will run intermittently
at LOW speed regardless of FAN setting. When room temperature is lower than temperature setting, unit will
only run FAN operation.
In HEAT mode,warm air will blow out after a short period of time due to cold-draft prevention function.
In Auto mode,unit will adjust fan speed according to room temperature automatically.
5
Operation
Fan Operation
LOCK
TEMP
TEMP
FAN
ON/OFF
MODE
4
1.Unit start
Press ON/OFF button to start your air conditioner.
Previous operation status appears on LCD (except for TIMER, SLEEP, and SWING setting).
2.Select operating mode
Press MODE button. At each press, operation mode changes as follows:
AUTO
COOL
DRY HEAT
FAN
Then select FAN
3. Adjust fan speed
Press FAN button. At each press, fan speed changes as follows:
Air conditioner will run at the selected fan speed.
4. Unit stop
Press ON/OFF button to stop unit.
About FAN mode
When the air conditioner runs in FAN mode, it is not possible to select
AUTO FAN or to set temperature.
5.
Warning:cooling only types are not with functions in heating mode.
6
Users’ Attention
If do not use the air conditioner
for a long time, it is necessary to
cut off power.
Do not press tightly with the LCD part of
the wire controller to avoid damage of it.
Set proper room temperature
If do not cut
Cut off
Not too low or high and make every peop-
power
off power, the
unit may consume
le in the
Heating is
18~23¡
room
Cooling is
power. In order to protect the unit,
before using the air conditioner
again, turning on the power at least
12 hours in advance.
The windows should be hung
with curtains or blinds.
Do not let the sun
26~28¡
feel
comfortable.
Do not let the cold air blows directly to
human body for a long time and do not
make the room temperature drop too
low.
Otherwise, it may
shine directly shine
in the room; do not
let the outdoor air
cause uncomfortable
or bad to your health.
The airflow cannot directly blow
to the pets and plants.
Otherwise, pets
enter room.
The articles must keep dry cannot
be put under the indoor unit.
When the humidity
and plants
may be hurt.
The room should often ventilate.
After a long-time
of using air
conditioner, the
room must be
ventilated.
is over 80% or
the drainage
outlet is blocked,
the indoor unit may drop water.
Do not put articles around the
air inlet and outlet.
This kind of obstacle can lower the
efficiency of the air conditioner or
cause unit trouble.
Do not keep the doors and windows
open
Otherwise, it
may lower the
efficiency of
the air conditioner.
Television, radio and acoustics, etc.
equipment should keep over 1m from
indoor unit and wire controller.
Otherwise, they may
disturb the image
The air conditioner can only be used
in air conditioning. It can not be
used in other purpose.
Do not use the air conditioner in some
specific purpose, such as storage or
protect food, animals, plants, precise
instrument and
and cause noise.
Do not put any drying
artwork,
devices under
otherwise,
the indoor unit.
the quality
The heat may cause
of them may
the deformation of
be declined.
indoor unit.
7
Maintenance
Disconnect power supply
Don't touch it with wet
hand
Don't wash with hot water
or solvent to clean the unit
Remove air inlet grille
First cut off the power supply, then turn
the embedded part of air inlet grille
upwards, finally use cross-shaped
screwdriver to screw off the screw.
Air filter cleaning
Use water or vacuum cleaner to clean it.
If it is extremely dirty, wash it with
neutral detergent or soap water.
Wash it with clean water and install
it after complete dry.
Caution:
Don't use hot water over 40 C,
as this may cause damage to air filter.
Wipe air filter carefully.
40¡
Indoor and outdoor cleaning
Clean it with warm and wet cloth or with neutral detergent, then wipe it dry with
clean and soft cloth.
If air conditioner is very dirty, clean it with cloth
soaked in neutral detergent,then wipe off the
detergent with clean water.
Don't use water higher than 40 C , which will cause
discoloring and deformation.
Don't use insecticide or other chemical detergents.
40¡
8
Maintenance
After season maintenance
Let the unit run in Fan mode for half a day in a
fine weather to dry completely the unit inside.
Turn off the unit and pull out power plug.
There might be certain power consumption even
if unit is stopped.
Clean air filter and indoor unit, cover outdoor
unit after cleaning.
Before season maintenance
Check if there are obstacles at inlet
and outlet of indoor and outdoor unit,
whick will reduce unit efficiency.
Don't fail to attach air filter after making sure it is cleaned.
Dust will enter into unit causing damages or faults if it is running without air filter.
To protect compressor at start, please connect
external power supply to the unit 12 hrs prior
to starting. Also please keep the power supply
switch ON during the whole season.
9
Trouble shooting
Followings are not problems
During unit start and operation or at stop, a swishing or
gurgling noise may be heard. This noise is generated by
refrigerant flowing in the system.
Sound of water flowings are not
problems.
During unit operation, a cracking noise may be heard.
This noise is generated by the casing expanding or
shrinking because of temperatuer changes.
Sound of cracking is heard.
Smells are generated.
This is because the system circulates smells from the
interior air such as the smell of cigarettes or the painting
on the unit.
During operation, white fog or steam
comes out of indoor unit.
When unit is running at places like restaurant where dense
edible oil fumeis always exist, this will happen.
To prevent frost from accumulating on indoor heat
exchanger, unit will switch to fan operation for a while
then resume cooling operation.
In cooling operation, unit switches to fan
operation.
Unit will not restart after stop.
Won't start?
Though ON/OFF button is set to
ON, 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.
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 indoor
unit.
This occurs when frost
accumulated on the outdoor unit
is removed.
(during defrosting operation)
In heating operation, indoor fan won't stop even After unit stops, indoor fan will go on running until indoor
unit cools down.
if unit is stopped.
10
When problems occur?
Before ask for services, please first check your unit against following.
Air conditioner won't start.
Is city power supply normal?
Is leakage current breaker
activated?
Is power supply switch
turned on?
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 there any obstacles at inlet
or outlet grill?
Are operation controlls
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?
Poor cooling
If there are unexpected heat
sources in the room?
Too many people in the room?
Is there any direct sunlight
in the room?
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.
If the fuse on PC board is broken please change it with the type of T.6.3A/250VAC.
11
When Troubles Occur ?
Find the following troubles occur, please stop the unit and cut off power, then
contact the after-sales service worker.
Warning
If finding any abnormal phenomena (e.g. smell of burnt), please cut off power and ask help for after-sales
service personnel.
If still use the air conditioner under this condition, the unit may be damaged and maybe cause electric shock
or fire, etc. accidents.
After taking the following measure,
please contact the commissioned
service center.
Symptom
Cut off power
The fuse and creepage breaker are often blown out;
or the operation switch works abnormally.
In Cooling or Dehumidifying operation, there is
water leakage;
Cut off power and inform your
commissioned service center.
Malfunction
Error display
Failure description
Code on wired controller
Room temp. sensor abnormal
Indoor coil temp. sensor abnormal
Outdoor temp. sensor abnormal
E1
E2
E3
Outdoor coil temp. sensor abnormal or compressor discharge
temperature protection abnormal
E4
Over-current malfunction
E5
E6
E8
E9
High / Low pressureabnormal
Communication malfunction between indoor PCB and wired controller
Communication malfunction between indoor PCB and outdoor PCB
The float switch malfunction
E0
12
Installation instruction
Before installing, do read this “Safety precautions” carefully to guarantee the proper installation.
The below attentive matters are divided into “ Warning” and “ Note” two parts. When the wrong
installation occur, it is very possible death and severe injury and other serious accidents will happen. For
those items are listed in “ Warning” part. But even the items listed in “ Note” part can also cause serious
accidents. Above all, both the two parts are very important contents related to safety, so they must be obeyed.
After finishing the installation work, do test run to verify everything is normal. After that please explain the
using and maintenance methods to the user. Additionally, give this installation manual and operation manual
to the user and ask them to keep it properly.
The commissioned repair center shall do the installation work. If you do the installation work by yourself,
the improper installation will cause water leakage, electric shock fire and other accidents.
The installation work shall be in line with what the installation manual specified. If installation is not
proper, water leakage, electric shock, fire and other accidents will occur.
Install the air conditioner to a place where can definitely stand its weight. The air conditioner can not be
installed on a nonmetal bracket (such as theft guard net). Places not firm enough will cause drop down of
unit resulting in body hurt.
The installation work shall be preventive to typhoon and earthquake. If the installation work is not met
with the requirements, overturn of the unit will occur resulting in accidents.
Using the specified cable to do wiring work and connecting firmly and properly. Fix the connecting part
of the terminals to prevent it from the external force. Improper connection and fixing will cause heating
and fire etc. accidents.
Wiring shall be kept in correct shape avoiding extrusion. After installation, the electric box cover and the
external panel shall not nip the wire. Improper installation will cause heating and fire etc. accidents.
When setting or moving the air conditioner do not let the air and things alike get into the refrigeration
system except the specified refrigerant (R22). If air and other things enter, abnormal high pressure will
occur, which easily cause break and body injuries etc. accidents.
When installing, do use the accessories or specified parts. If not using the parts specified by our company,
water leakage, electric shock, fire and refrigerant leakage will occur.
Do not lead the drain hose to drain where the sulfur gas may be involved. Otherwise, the poisonous gas
will enter into the indoor.
During installation, if refrigerant leakage occurs, do the ventilation work immediately. As soon as the
refrigerant gas meets fire, poisonous gas will be produce.
After installation, confirm there is no leakage of refrigerant. If the refrigerant gas enters into room and
meet the air blowing heater, heater or stove etc. fire source, the poisonous gas may be produced.
Do not install the unit in a place where the combustible gas may be leaked. In any case the combustible gas
leaks and accumulated around the unit, fire accident will occur.
The drain hose should be correctly installed according to the installation manual to ensure smooth drainage,
and take proper heat preservation measure to prevent from dew. Improper pipe installation may cause water
leakage result in wet the indoor articles.
Do heat insulation work to the refrigerant gas pipes and liquid pipes to reach the purpose of heat preservation.
If the heat insulation measure is not sufficient, water generated by condensing dew will drip leading to wet
the floor and indoor articles.
Do grounding work. Do not connect the grounding wire to gas pipe, tap, lighting rod or telephone line.
Improper grounding will cause electric shock.
In some places the creepage breaker shall be installed. If do not install the breaker, electric shock may occur.
After electric installation, power on them to do electric leakage test.
13
Installation instruction
Notice
This manual can not include all kinds of conditions, if you have new
requirements and questions, please contact with local Haier Sales Center.
Warning
Before installing the unit, please read this manual carefully. Improper
installation may cause accidents and make unit damage or death.
Installation tools
1. Screw driver
2. Hacksaw
3. 70mm dia. hole core drill
5. Spanner (14, 17, 27mm)
7. Flaring tool
4. Spanner (dia. 17, 27mm)
6. Pipe cutter
8. Knife
9. Nipper
11. Measuring tape
13. Refrigerant oil
10. Gas leakage detector or soap water
12. Reamer
14. Lead-solder tool
Standard accessories
Following parts shall be field
supplied
Parts name
Adhesive tape
Pipe clip
Mark
A
B
C
Connecting hose
Drain hose
D
E
Insulation material
Putty
F
14
Installation procedure
1. Before installation
[Before finishing installation, do not throw the attached installation parts away.]
Confirm the route to carry the units to the installation place.
Do not remove the package of the unit, before carrying it to the installation place.
When have to remove the package, use a soft material or protection board with rope to lift
the unit to prevent the unit from damage or bumping scrape.
2. Selection of installation place
Select the firm place that will not influenced by vibration and can bear the weight of the unit
Select the place with easy drainage and place can perform outdoor unit pipe connecting.
Select the place far away from heat source, vapor source and direct sunshine to avoid the
causing of the trouble in operation parts and the deformation of the casing.
Select the place where the cool air or warm air can evenly spread to every corner of the room.
Select the place near power receptacle leaving sufficient space around the unit. (Referring to
installation diagram)
Avoid the following installation places
Place with oil fog splash and much vapor (e.g. mechanical plant and kitchen, etc.) to prevent
heat exchanger from performance lowering and plastic parts from corroding to damage.
Place may generate or keep corrosive gas (sulfur dioxide, etc.), flammable gas (diluent, gasoline,
etc.) to prevent heat exchanger from corroding, plastic parts from damage and flammable gas from
causing fire accident.
Hospital, etc. places near the machine generates electromagnetic wave or high frequency signal to
prevent the mixed wave from causing wrong action of the control parts.
Place can be blown by the sea wind (coastal area) to prevent the casing and heat exchanger from
corroding.
3. Installation space
(Indoor unit) please keep the spaces larger than the following dimension.
Unit (mm)
1000
50
600
600
15
Installation procedure
indoor unit
Installation of indoor unit
Selection of installation place
Place where it is easy to route drainage pipe and outdoor piping.
Place away from heat source and with less direct sunlight.
Place where cool and warm air could be delivered evenly to every corner of the room.
Place near power supply socket. Leave enough space around the unit (refer to installation
drawings).
Fixing of the unit
Position of the wall hole
1.
Wall hole should be decided according to installtion place and piping direction. (refer
to installation drawings)
Making a wall hole
2.
Drill a hole of 70mm dia. with a little slope towards outside.
Install piping hole cover and seal it with putty after installation.
INDOOR
OUTDOOR UNIT
wall thinkness
wall hole
70mm
( Cross section of wall hole )
Fixing of indoor unit
To prevent it from fall off, please fix the unit with fall-prevention fitting at wall and
L-shaped metal at floor.
Self-tapping
screw
all-prevention fitting metal (accessory)
Wood screw
Please install the whole
unit horizontally,with a slop
of 1 degree at front and
rear,left and right.
L-shaped metal
(accessory)
16
Installation procedure
indoor unit
Installation of fall-prevention fitting metal:
Fix the fitting metal to the wall by screws so that there is no clearance between them.
With the unit set up vertically, fix the fitting metal to the unit with screws while making an
adjustment at the long portion of the hole so that there is no clearance between the upper surface
and the fitting metal.
Installation of L-shaped metal
Fix to the unit by screws so that there is no clearance between the fitting metal and the unit.
After confirming that the unit has been set up vertically to the floor, fix it to the floor by bolt.
Piping connection
Connecting method
1.
Apply refrigerant oil at half union and flare nut.
To bend a pipe, give the roundness as large as possible not to crash 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 sundries, such as sands enter the pipe.
Forced fastening without centering may
damage the threads and cause a gas leakage.
Pipe dia
Fastening torque
.
42N m
Liquid pipe 12.7mm(1/2")
17
Installation procedure
Indoor unit
2. Piping connection of indoor unit
Arrangement of piping and drainage pipe
After opening inlet grill, you will see a control
box as shown in the Fig.
Remove the cover before working.
Cut away, with a hammer or a saw, the lid for piping according to piping direction.
Insulation material
Drain hose
Connecting electric cable
for indoor and outdoor unit
Copper tube
According to the piping method, connect the piping on indoor unit with union of connecting pipe.
Arrange the piping as per the wall hole and bind drain hose connecting electric cable and piping
together with polyethylene tape.
Insert the bound piping connecting electric cable and drain hose through wall hole to connect with
outdoor unit.
Arrangement of drain hose
Drain hose shall be placed in under place.
There should be a slope when arrange drain hose. Avoid up and down waves in drain hose.
Indoor unit
Up
Down
Bad
Slope
Good
If humidity is high, drain pipe( especially in room and indoor unit ) must be covered with
insulation material.
18
Installation procedure
Indoor unit
Main points of installation refrigerant pipe
Please install the gas pipe and liquid pipe according to the following shown method.
Please remove the cover piece on the gas pipe and the screw cap on the liquid pipe.
A
B
¢ Please connect the connecting pipes between indoor and outdoor unit according to the
following method.
a) When introducing the pipe from right side
Use attached accessory <A> to connect the on-the-spot connecting pipe and gas
pipe.
A B
b) When introducing pipe from rear side or left side
Use attached accessory <A> to connect the on-the-spot connecting pipe and gas
pipe.
¢ After finishing connection of connecting pipe, please do thermal insulation treatment
by using the attached thermal insulation material. Otherwise, it may cause water
leakage.
19
Installation procedure
Outdoor unit
Outdoor unit
1.GENERAL
They can be mounted on a slab or rooftop. It is important to consult your local
code authorities at the time the first installation is made.
Check following points before attempting any installation:
Structural strength of supporting members.
Clearances and provision for servicing.
Power supply and wiring.
Location for minimum noise, where operating sounds will not disturb owner or
neighbors.
Location where there is no risk of combustible gas leakage.
Location where external water drainage cannot collect around the unit.
Location where roof runoff water does not pour directly on the unit. Provide
gutter or other shielding at roof level. Don't locate unit in an area where excessive
snow drifting may occur or accumulate.
Provide a level concrete slab. To prevent transmission of noise or vibration, slab should
not be connected to building structure. Some sort of sound-absorbing material should be
placed between the condenser and the slab. A good material to use is rubber and cork pad.
For rooftop application, make sure the building construction can support the weight
and that proper consideration is given to the weather-tight integrity of the roof. The
condensing unit contains moving parts and can vibrate. Therefore, sound is also a
consideration in rooftop applications.
! WARNING - Install the unit securely in a place that can bear the weight of the unit.
When installed in an insufficiently strong place, the unit could fall causing injury.
20
Installation procedure
Outdoor unit
2.UNIT CLEARANCES
10" Min.
Service Access
18" Min.
10 "Min.
Service Access
18 Min.
10"
"
"
10
Figure 1
The minimum clearances for the unit are illustrated in Figure 1. Condenser air enters from
three sides. Air discharges upward from the top of the unit. Refrigerant tube and electrical
connections are made from the service access area. The most common application will
find the unit best located about 10" from back wall with connection side facing the wall.
This application minimizes exposed tubing and wiring, minimizing the space for
youngsters to run around the unit with subsequent damage to the tubing or wiring.
In more confined application spaces, such as corners provide a minimum of 10" clearance
on all air inlet sides. For service access to the compressor and control box, allow 18"
minimum clearance. Ensure top is unobstructed. If units are to be located under an
overhang, there should be a minimum of 36" clearance and provision made to deflect
the warm discharge air out from the overhang.
In order to have an unrestricted air flow, owners should be advised to avoid lawn mower
discharge toward the unit depositing debris on the fin coil surface reducing the unit
efficiency.
.3.REFRIGERANT PIPING
The refrigerant piping is very important as it affects the proper operation and efficiency
of the air conditioning system. Note the following guidelines:
OUTDOOR UNIT
ADDITIONAL SUCTION LINE
OIL TRAP FOR EACH 20 FOOT
PITCH SUCTION LINE TOWARD OUTDOOR
UNIT 1/2" FOR EVERY 10' OF LINE
RISE OF PIPE
INDOOR UNIT ABOVE OR
LEVEL TO OUTDOOR UNIT
30m
LIQUID LINE
SUCTION LINE OIL
TRAP WHEN INDOOR
UNIT IS 4 FEET OR
MAX.
INDOOR UNIT
OUTDOOR UNIT
M O R E
B E L O W
OUTDOOR UNIT
INDOOR UNIT
LIQUID LINE
INDOOR UNIT BELOW OUTDOOR UNIT
6'
A
B-1
INVERTED LOOP
LIQUID LINE
INDOOR UNIT
SUCTION LINE
30m
OUTDOOR UNIT
MAX.
B-2
21
Installation procedure
Outdoor unit
Only refrigeration-grade copper piping (dehydrated and sealed) should be used. Take extreme
care to keep the refrigerant tubing clean and dry prior to and during installation.
If in doubt, blow out the tubing with dry nitrogen to remove any chips or debris before
connection. Always keep tubing sealed until it is in place and the connections are to be made.
Refrigerant piping should be as short as possible, with a minimum of elbows or bends, to avoid
capacity loss and increased operating costs.
Refrigerant lines must be adequately supported. If metal strapping is used to secure the tubing,
do not allow the strapping to directly contact the tubing. Use a closed cell insulation to separate
the strapping from the tubing.
Do not kink or twist the tubing.
Refrigerant piping should not be installed in a cement slab, as this limits access to the
refrigerant should a leak be suspected.
To ensure good oil return to the compressor, it is important to pitch the horizontal suction
line toward the compressor, approximately 1/2" for every 10' of line.
The maximum connection pipe is 50m ,the maximum drop different between indoor unit and
outdoor unit is 30 m
Line Insulation
Suction line requires insulation in order to prevent condensation from forming on the
piping and to prevent heat gain caused by surrounding air. Generally 3/8" wall thickness
of Armflex or equivalent is satisfactory. In severe application (hot, high humidity areas)
greater thickness may be required. Apply the line insulation by sliding it on the sealed
tuing before cutting and making connections.
Liquid line does not necessarily need insulation, however, if they are exposed to high
ambient temperatures (i.e. kitchen, boiler rooms, hot attics & rooftop surface), then,
they should be insulated. Make sure to use the proper size tubing for the liquid line to
prevent liquid refrigerant flashing to a vapor within the liquid line.
Do not allow the vapor line and liquid line to touch together. This would cause an
undesirable heat transfer resulting in capacity loss and increased power consumption.
Tubing connection
! CAUTION - Use extreme caution in removing the caps from the suction and liquid line
fittings, as there is pressure present. A fitting is on the liquid line to remove pressure.
! CAUTION - Condensing units are charged with refrigerant. Condensing unit liquid
and suction valves are closed to contain the charge within the unit. Do not force the valve
stem against the retaining ring. If the valve stem is backed out past the retaining ring,
system pressure could force the valve stem out of the valve body and possibly cause
personal injury.
22
Installation procedure
Outdoor unit
Matters needing attention
Never use oxygen,flamable and poisonous gases for the leak test.
High-pressure
gauge
Low-pressure
gauge
Three-way valve fully
closed(gas side)
VL VH
Indoor
Outdoor
Gauge distributor
Solder joint
Solder joint
Access hole
Access hole
6.4
Copper
pipe
Tightly
closed
Solder
joint
Relief valve
6.4
Copper pipe
Indoor unit
Outdoor unit
Three-way valve fully closed
liquid side
Detailed diagram of the
three-way valve
To the gauge
distributor
(Gas side)three-way valve
(Liquid side)three-way valve
(Gas side )
access hole
To the unit
(Liquid side)access hole
To the unit
Field tube
installation
Field tube
installation
2
Step 1:Charge for more than 3 minutes under 0.3MPa(3.0kg/cm g)
2
Step 2:Charge for more than 3 minutes under 1.5MPa(15kg/cm g)
--Serious leakage may be found.
2
Step 3:Charge for more than 24 hours under 3.0MPa(30kg/cm g)
--Small leakage may be found.
Check for pressure decrease
Without pressure decrease-Pass
With pressure decrease-Check for leakge.
There will be a 0.01MPa(0.1kg/cm2g) pressure change for every 1 C ambient temperature change during
the 24-hour pressure charge.It should be corrected during the test.
23
Installation procedure
Outdoor unit
Check for leakage
In the case of pressure decrease during steps 1 to 3 ,check the joints with the ear,hand or soapsuds for
leakage.Repair it by welding or tighten the connecting nut up.
Vacuum Pumping
Use vacuum pump to evacuate the air.Never use the refrigerant for the evacuation.
Drain off the nitrogen gas after the leak test and then connect the vacuum pump as shown in the figure
below.
The vacuum pumping must be done from both the liquid and gas inlets.
High-pressure
Low-pressure
gauge
gauge
Three-way valve fully
closed(gas side)
VL VH
Indoor
Outdoor
Gauge distributor
Solder joint
Solder joint
Access hole
Access hole
6.4
Copper
pipe
Tightly
closed
Solder
joint
Relief valve
6.4
Copper pipe
Indoor unit
Outdoor unit
Three-way valve fully closed
liquid side
Detailed diagram of the
three-way valve
To the gauge
distributor
(Gas side)three-way valve
(Liquid side)three-way valve
To the unit
(Gas side )
access hole
(Liquid side)access hole
To the unit
Field tube
installation
Field tube
installation
Use a vacuum pump with high degree of vacuum(below-755mmHg) and large volume displacement
(above 40L/min)
The pumping time depends on the length of the connecting pipe.Generally,it takes about 2-3 hours.
Make sure that the Y-shaped valves on both the gas and liquid sides are closed before pumping.
If the vacuum can no reach-755mmHg within 2 hours,continue pumping for another 1 hour.
If the vacuum can no reach-755mmHg after more than 2 hour's pumping,close the valves VL and VH
onthe gauge distributor and stop pumping.One hour later,check the vacuum again.If the vacuum has
changed,it means there is a leakage.Repair it.
After the above steps,replace the vacuum pump with the refrigerant pump and refill refrigerant.
24
Installation procedure
Outdoor unit
Adding refrigerant
Containers for R22 refrigerant must be marked
Refrigrant must be added in liquid state.
Refrigerant bottle swith or without a siphon
tube can be refilled with refrigerant upright
or upside down,Respectively.
with R22
R22 refrigerant cannot share the same
instrument distributor and filling pipes.
Refrigerant charge
After finished vacuum the system,charge the vacuum to the refrigerant pump,chargeing the refrigerant.
Calculation of the refrigerant charge
Note:when unit shipping out of the factory,charge the refrigerant not including the connstruction
procedure charged parts.
The calculation of the refrigerant charging:
When the connection pipe(L)<=5 meters, not need to add refrigerant;If the connection pipe
(L)> 5 meters,we need recharge the 60g refrigerant per add 1 meter.
That is :the quantity of refrigerant charging=(L-5)*60(g)
Refill refrigerant
When the outdoor valve is shut,fill the refrigerant from the access hole at the gas and liquid sides.
If the required filling is impossible,open all the gas and liquid valves,then slightly shut the gas valve,
run the compressor and fill the refrigerant from the access hole at the gas side.Now adjust the gas
valve to control the refrigerant flow,which will be gasified during absorption by the system.
If there is insufficient refrigerant in the system caused by leaks,refill it after the remaining refrigerant
is recollected.
Open all valves
Open all the valves of the outdoor unit.
Heat isolation of the pipes
Separate isolation should be made for the liquid and gas pipes.
Materials used for the pipe isolation at the gas side must withstand above 120 C temperature.
25
Installation procedure
Note:
All the wires should be copper core wires.
Electric wiring
The power cable of indoor unit should be equipped according to the operation manua of indoor unit.
Before finishing vacuumizing the refrigerant pipe system, do not supply power to indoor unit.
When connecting the indoor & outdoor wire, check the number of the indoor & outdoor terminals,
the terminals with the same number connected together with one wire.
Incorrect wiring will damage the controller of the air conditioner or make the unit work abnormally.
The air conditioner must use special power circuit and special air switch (40A), groundign wire. The
wiring work should be done by a qualified electrician according to the national wiring rule.
The creepage breaker must be installed. The grounding line and the neutral line of the receptacle
must be strictly separated. It is incorrect to connect the neutral line with the grounding line.
The connection type of power cord is Y connection. If the soft power cord is damaged, to avoid
risk, it must be replaced by the manufacturer or their specific repair department or similar professional
worker.
Wiring method
1.The wiring method of orbicular terminal
For the connection wire which end is orbicularterminal,
its wiring method is as the right figure shown.
Dismantle the screw and put it through the ring at the end
of the connection wire, then connect it to the terminal block
and tighten the screw.
The wiring method of orbicular terminal
Wrong pressing
Correct pressing
2.The wiring method of straight terminal For those
connection wires whose end are not orbicular terminals,
their wiring method is: Loosen the connecting screw,
insert the end of the wire directly into the terminal block,
and then tighten screw. Pull the wire outwards slightly
to confirm it is held tightly.
Terminal block
Wire holding clamp
(Sketch map)
Y/G
Terminal block of
indoor unit
3.Pressing method of connection wire:
After wiring, the connection wire must be pressed with
wire holding clamp. The wire holding clamp should press
on the out cover of the connection wire. As the right
figure shown:
Connect wire between indoor & outdoor unit
As the wiring diagram show to arrange the connection
wire.
Power supply:
380-400V~,3N,50Hz
2
3
1
N
L1 L2 L3
Y/G
2
3
1
Terminal block of
outdoor unit
Terminal block of
outdoor unit
The power cable and connecting cable are self-
2
provided. The power cable shoule be 5x6.0mm ;
2
the connecting cable should be 4x1.0mm .
Note: The terminal block's mark at the two ends of the
connection wire should be corresponding one by one,
otherwise the air conditioner cannot work normally.
Selection of size of power supply and interconnecting wires.
Circuit breaker
Item
Earth leakage breaker
Power source
wire size
(minimum)
Switch breaker
(A)
Switch
breaker
Leak
current
Overcurrent protector
rated capacity (A)
Phase
Model
6.0mm2
40
30mA
HPU-90CA03T3
3
30
40
26
Others
1. Power supply
The parameter of power cord is over 2.5mm2.
Air conditioner must use an exclusive line (over 30A)
When installation air conditioner in a wet place, try to use a circuit breaker against
Current leakage.
For installation in other places, use circuit breaker as far as possible.
The breaker of the air conditioner should be all-pole switch ; and the distance between
its two contacts should be no less 3 mm.
Such means for disconnection must be incorporation in the fixed wiring
2. Pipe cutting and flaring
Be sure to carry out deburring after pipe cutting with a pipe cutter.
Insert flaring tool to make a flare.
Pipe dia.
Dimension A(mm)
1.2 ~ 2.0
A
Flaring tool
Liquid pipe
12.7mm (1/2")
Correct
Incorrect
Lean Damaged flare Crack
Partial Too outside
Installation inspection and test run:
Please operate unit according to this Manual.
Items to be checked during test run. Please made a " "in " "
Are there any gas leakage?
How is insulation at piping connection carried out?
Are electric wires of indoor and outdoor unit firmly inserted into terminal block?
Is electric wiring of indoor and outdoor securely fixed?
Is drainage securely carried out?
Is earth line ( grounding ) securely connected?
Is power supply voltage abided by the code?
Is there any noise?
Is control display normal?
Is cooling operation normal?
Is room temp. regulator normal?
27
Others
1.Calculation of refrigerant density
Calculation will be made according to the following methods:
1) Total refrigerant content of each system (kg) =content of 1 outdoor system + refilled refrigerant
Content of 1 outdoor system:Factory filled refrigerant
Refilled refrigerant:Filled content during installation according to the diameter and length of the
liquid piping.
3
2) Calculation of the minimum room space (m ).
3) Calculation of refrigerant density
Total refrigerant content
3
Refrigerant density:0.3(kg/m )
Minimum room space
2.Preventive measures against excess of critical value
1) Make ventilation holes
Ventilation holes should be built above and under the door.The area of each hole should not be smaller
than 0.15% of the room space.Holes can be made directly in the wall.
2) Reduce the filling content of refrigerant
Filling content of refrigerant can be reduced by shortening the distance between the indoor and
outdoor units.
By reducing the capacity of the outdoor unit.
When outdoor unit be made up of several units.the outdoor capacity of each system should reduce.So
the refrigerant content of system reduce.
3) Install ventilation fans.
Users can install uninterrupted ventilation fans to keep the refrigerant density under the critical value.
If uninterrupted ventilation is impossible,a combined fanning and alarming device should be installed
in its stead (through which immediate ventilation is possible when leak occurs).
(See the figure below)
An example
Ventilation fan and gas leak alariming device
Vertilation opening
The gas leak alarming
device should be installed
at refrigerant gas
stagnation areas
28
|