DUCT TYPE AIR CONDITIONER
Indoor unit Operation & Installation
Manual
HDU-42CF03/H
HDU-42HF03/H
HDU-42HT03/H
No. 0010576889B
please read this operation manual before using the air conditioner.
please keep this manual carefully and safely.
Table of Contents
Cautions
Safety Precautions
Parts and Functions
Operation
Malfunction
Care and Maintenance
For Preparation of Heating(Hot Keep")
Is The Unit Installed Correctly
Installation Manual For Wire Controller
Installation Manual For Indoor Unit
Installation Manual For Electric Wiring
2
3-5
6-8
9-14
15-17
18
19
20
21-22
23-31
32
1
Cautions
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.
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.
Safety Instructions and Warnings
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. Never
unplug your air conditioner by pulling on the
power cord. Always grip plug firmly and pull
straight out from the outlet.
All electrical ropairs 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 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.
2
Safety Precautions
Before starting to use the system, read carefully this"SAFETY PRECAUTIONS" to ensure a proper operation of the system.
Safety precautions described here are classified to " WARNING" and " CAUTION". Precautions which are shown in the column of
" WANING" means that an improper handing could lead to a grave result like a death, serious injury, etc. However, even if precautions
are shown in the column of " CAUTION", a very serious problem could occur depending on situation. Make sure to observe these safety
precautions faithfully because they are very important information to ensure the safety.
Symbols which appear frequently in the text have following meanings.
Strictly prohibited.
Observe instructions faithfully.
Provide a positive grounding.
When you have read through the manual, keep it always at hand for read consultation. If the operator is replaced, make sure to hand over
this manual to the new operator.
CAUTIONS FOR INSTALLATION
WARNING
The system should be applied to places as
office, restaurant, residence and the like.
Application to inferior environment such as an engineering shop, could cause equipment malfunction and
serious injury or death.
Do not install nearby the place where may
have leakage of flammable gas.
If the gas leakes and gathers around, it may cause the
fire.
Where strong winds may prevail, the
system should be fixed securely to prevent
a collapse.
The system should be installed by your
dealer or a professional installer.
Installation by yourself is not encouraged because
it could cause such problems as water leakage,
electrical shock or fire accident by some improper
handing.
CAUTION
Depending on the place of installation, a
circuit breaker may be necessary.
ON
OFF
Unless the circuit breaker is installed, it could
cause elecrical shocks.
Install on the place where can endure
the weight of air conditioner.
When you need some optional devices such as a humidifier, electric heater, etc., be sure to use the products
which are recommended by us. These devices should
be attached by a professional installer.
Installation by yourself is not encouraged because it
could cause such problems as water leakage, electrical
shock or fire accident by some improper handing.
Drain pipe should be arranged to provide a
positive draining.
If the pipe is arranged improperly, furniture or the
likes may be damaged by leaked water.
Make sure the system is grounded.
Bodily injury could result by a collapse.
CAUTIONS FOR OPERATION
You should refrain from exposing your body
directly to cool wind for a long time.
It could affect your physical condition or cause some
health problems.
The system should never be used for any
other purposes than intended such as for
preservation of food, flora and fauna, precision deices or work of art.
It could cause deterioration of food or other problems.
Bodily injury could result by a careless installation.
WARNING
Do not poke the air inlet or outlet with a
bar, etc.
Since the internal fan is operating with a high
speed, it could cause an injury.
CAUTION
Do not handle switches with a wet hand.
It could cause electric shocks.
3
Grounding cable should never be connected to a gas
pipe, city water pipe, lightning conductor rod or
grounding cable of telephone. If the grounding cable
is not set properly, it could cause electric shocks.
When any abnormal condition (scorching smell or others) is found, stop the operation immediately and turn
off the power switch. Then consult your dealer.
If you continue the operation without removing the
cause, it could result in a trouble, electric shock or fire.
Combustion apparatus should not be placed
allowing a direct exposure to wind of air conditioner.
Incomplete combustion could occur on the apparatus.
Safety Precautions
Do not wash the air conditioner with water.
CAUTION
Do not install the system where the air outlet
reaches directly the flora and fauna.
Make sure to use a fuse of proper electric
rating.
It could cause electric shocks.
Neither stand on the air conditioner nor
place something on it.
There are risks of falling or injury by collapsed object.
Do not use the power switch to turn on or
off the system.
ON
OFF
It could cause a fire or water leakage. There is a risk of injury.
When operating the system simultaneously
with a combustion apparatus, indoor air must
be ventilated frequently.
Insufficient ventilation could cause an
oxygen deficiency accident.
When cleaning the system, stop the operation
and turn off the power switch.
It will not be good for their health.
It is strictly prohibited to place a container of
combustible gas or liquid near the air conditioner or to spray it directly with the gas or liquid.
It could cause a fire accident.
Do not touch the air outlet section while
the swing louver is operating.
Check occasionally the support structure of
the unit for any damage
period of time.
If the structure is not repaired immediately, the
unit could topple down to causea personal injury.
Do not put water containers on the unit
such as a flower vase, etc.
after a use of long
Use of steel or copper wire in place of a fuse is strictly
prohibited because it could result in a trouble or fire
accident.
Do not operate the system while the
air outlet grill is removed.
There is a risk of injury.
Do not use such equipment as a water
heater, etc. around the indoor unit or the
wire controller.
If the system is operated at the vicinity of such equipment which generates steam, condensed water may
drip during cooling operation or it could cause a fault
current or short-circuit.
Do not place any objects on or climb on
the unit.
Do not try to repair or reconstruct by yourself.
Cleaning should never be done while the internal
fans are running with high speed.
If the structure is not repaired immediately, the
unit could topple down to cause apersonal injury.
CAUTIONS FOR TRANSFER OR REPAIR
WARNING
Modification of the system is strictly prohibited. When the system
needs a repair, consult your dealer.
Improper practice of repair could cause water leakage, electric shock or fire. Improper practice of installation could cause water leakage, electric shock or fire.
When the air conditioner is relocated, contact your dealer or a professional installer.
4
Safety Precautions
The machine is adaptive in following situation
1. Applicable ambient temperature range:
1
HDU-42CF03/H HDU-42HF03/H (FOR T1 Climate)
Rated Maximum Minimum
Indoor
Cooling
outdoor
DB C
WB C
DB C
WB C
Heating
Indoor
outdoor
DB C
WB C
DB C
WB C
HDU-42HT03/H (FOR T3 Climate)
2
Indoor
Cooling
outdoor
DB C
WB C
DB C
WB C
Heating
Indoor
outdoor
DB C
WB C
DB C
WB C
27 32 18
19 23 14
35 43 10
24 26 6
20 27 15
14.5 -- - 7 24 -7
6 18 --
Rated Maximum Minimum
29 32 18
19 23 14
46 52 10
24 31 6
20 27 15
14.5 -- - 7 24 -7
6 18 --
2. If the supply cord is damaged, it must be replaced by the manufacturer or its service agent
or a similar qualified person.
3. The wiring method should be in line with the local wiring standard.
4. The power cable and connecting cable are self-provided. The power cable should be
H05RN-F 5G 2.5mm
42CF03/H,HDU-42HT03/H),6G 0.75mm
when the connecting cables break off, it must be assured that the grouding wire is the last
one to be broken off.
5. The breaker of the air conditioner should be all-pole switch; and the distance between its
two contacts should be no less 3mm.
6. The indoor unit installation height is at least 2.5m.
2
.The connecting cable should be H07RN-F 4G 0.75mm2(HDU-
2
(HDU-42HF03/H).During installation,
5
Parts and Functions
Indoor Unit
Duct
Air outlet
Duct
Drainpipe
Air inlet
6
Parts and Functions
Operation
CLOCK
Used to set correct time.
TIMER
Used to select
TIMER ON,
TIMER OFF,
TIMER ON/OFF.
TIME
Used to set clock and
timer setting.
HEAT
Buttons and display of the wire controller.
Used to select AUTO
RUN, COOL, DRY,
HEAT and FAN
operation.
FAN SPEED
Used to select fan
speed: LO, MID, HI,
AUTO
HEALTH
HEAT
Used for setting indoor
health function
Used to select your
desired temp.
Used to confirm Timer
and Clock settings.
MODE
HEALTH
TEMP
SET
Used to start/stop auxiliary electric
heater when in heating operation
Power ON/OFF
Used for unit start and
stop.
Cautions:
On cooling only unit,heating mode
is not available; For this unit the
"HEALTH" function is not available;
For the unit wihtout auxiliary electric
heater the "HEAT" function is not available
SLEEP
Used to select sleep
mode.
Note:
The above information is the explanation of
the displayed information therefore varies
with those displayed in actual operation.
7
Parts and Functions
Operation
SLEEP
AUTO
DRY
FAN SPEED
Buttons and display of the wire controller.
Remote control
COOL
HEAT
HEALTH
HEALTH
HEAT
ELECTRIC HEATER
TIMER ON
TIMER OFF
CLOCK
Clock set
When unit is started for the first time, clock should be adjusted as follows:
Press CLOCK button, "AM"or "PM" flashes.
8
OPERATING LAMP
FAN OPERATION
TEMP.
Operation
The air conditioner has the function of POWER
FAILURE RESUME.
HEALTH
HEAT
Fan operation
Enjoy yourself by just a gentle press.
(1) Unit start
Press ON/OFF button, unit starts.
Previous operation status appears on display.
(Not Timer setting)
Power indicator lights up.
(2) Select operation mode
Press MODE button. For each press, operation
mode changes as follows:
(3) Fan
Press FAN button. For each press, fan speed
changes as follows:
LOW
Unit will run at selected fan speed.
(4) Unit stop
AUTO COOL DRY FAN
HEAT
Press ON/OFF button.
Only time and room temp remains on LCD.
All indicators go out.
Vertical flap closed automatically.
Hints
Wire controller can memorize settings in each operation mode. To run it next time just select
the operation mode and it will start with the previous setting.
No reselecting is needed.(TIMER ON/OFF needs reselecting)
In FAN mode, temp. can't be set.
MID HIGH
9
Operation
AUTO RUN, COOL,HEAT and DRY operation
Recommendations
Use COOL in summer.
Use HEAT in winter.
Use DRY in spring,autumn and in damp climate.
(1) Unit start
Press ON/OFF button, unit starts.
Previous operation status appears on display
(Not Timer setting). Power indicator lights up.
(2) Select operation mode
Press MODE button. For each press, operation mode
changes as follows:
4
HEALTH
HEAT
(4) Fan speed selection
Press FAN button. For each press, fan speed changes
as follows:
LOW
MID HIGH
AUTO
AUTO
AUTO COOL DRY FANHEAT
Unit will run in operation mode displayed on LCD.
Stop display at your desired mode.
(3) Select temp. setting
Press TEMP button
Unit will start running to reach the temp. setting
on LCD.
(5) Unit stop
Press ON/OFF button.
Only time and room temp remains on LCD.
All indicators go out.
Vertical flap closes automatically.
Hints
Wire controller can memorize each operation
status. When starting it next time, just press
ON/OFF button and unit will run in previous
status.
10
Operation
HEALTH
HEAT
TIMER operation
Set Clock correctly before starting Timer operation.
You can let unit start or stop automatically at following time: Before you wake up in the
morning, or get back from outside or after you fall asleep at night.
TIMER ON/OFF
(1)After unit start, select your desired
operation mode.
Operation mode will be displayed on LCD.
Power indicator lights up.
(2)TIMER mode selection
Press TIMER button to change TIMER mode.
Every time the button is pressed, display changes
as follows:
ON
Select your desired TIMER mode (ON or OFF)
OFF
ON
OFF
blank
(3)Timer setting
Every time the button is pressed, time increases 10min.
If button is kept depressed, time will change quickly.
Every time the button is pressed, time decreases 10min.
If button is kept depressed, time will change quickly.
Time will be shown on LCD. It can be adjusted within
24hours.
(4)Confirming your setting
After setting correct time, press SET button to confirm
"ON" or "OFF" stops flashing.
Time displayed: Unit starts or stops at x hour x min (ON
or OFF).
Timer mode indicator lights up.
To cancel TIMER mode
Just press TIMER button several times until TIMER mode disappears.
Hints
Wire controller possesses memory function, when use TIMER mode next time, just
press SET button after mode selecting if timer setting is the same as previous one.
11
Operation
TIMER ON-OFF
HEALTH
HEAT
(1)After unit start, select your desired
operation mode
Operation mode will be displayed on LCD.
Power indicator lights up.
(2) Press TIMER button to change TIMER
mode
Every time the button is pressed, display changes as follows:
ON
ON
Select .
OFF
OFF
ON
OFF
blank
(3)Time setting for TIMER ON
Press TIME button.
Every time the button is pressed, time increases 10min.
If button is kept depressed, time will change quickly.
Every time the button is pressed, time decreases 10min.
If button is kept depressed, time will change quickly.
Time will be shown on LCD.
It can be adjusted within 24hours.
AM refers to morning and PM to afternoon.
(4) Time confirming for TIMER ON
After time setting, press TIMER button to confirm.
"ON" stops blinking, While "OFF" starts blinking.
Time displayed: Unit starts at Xhour X min.
(5)Time setting for TIMER OFF
Follow the same procedures in "Time setting for
TIMER ON".
(6)Time confirming for TIMER OFF
After time setting, press SET button to confirm
"OFF" stops flashing.
Time displayed: Unit stops at X hour X min.
To cancel TIMER mode
Just press TIMER button several times until TIMER mode disappears.
According to the Time setting sequence of TIMER ON or TIMER OFF, either Start-Stop or Stop-Start can
be achieved.
12
Operation
Comfortable Sleep
At night, before going to bed you
can press down the SLEEP button
on the controller and the airconditioner will run by the
comfortable sleeping mode to
make you sleep more comfortable.
In cooling, dehumidifying mode
In heating mode
HEALTH
HEAT
Note:
In AUTO mode, unit will run in SLEEP function according to the operation mode.
After setting SLEEP function, it is forbidden to calibrate clock.
If the set sleep-time does not reach 8 hours, the unit will stop operation automatically after
set time is complete.
Set "TIMER-OFF" function first, then set SLEEP, and the sleep-set is performance; set
TIMER-ON function first, the sleep function can only be set before
TIMER-ON; if set theSLEEP
function first, the TIMER function can not be set.
SETTING T
1 hr
1 hr
about 3 hrs
3 hrs
SLEEP RUN BEGINS SLEEP RUN STOPS
SHUT DOWN
SLEEP RUN BEGINS
1 hr
1 hr
SETTING T
13
SLEEP RUN STOPS
about 6 hrs
SHUT DOWN
Operation
Power Failure Compensation (to be applied for a necessary situation)
After the power failure compensation is set, if power failure suddenly occurs while the air conditioner
is working, it will resume the previous working state when the power is supplied again.
Setting Method: When the wire controller is on (excluding timer mode and fan mode), press
the "Sleeping" button on the remote controller 10 times within 5 seconds, and
after the buzzer rings 4 times, the air conditioner will enter the state of power
failure compensation.
Cancel Method: Press the "Sleeping" button on the wire controller 10 times within 5 seconds,
and after the buzzer rings 2 timer, the power failure compensation mode will be
cancelled.
Notes: When a power failure suddenly occurs during the air conditioner is working after the power
failure compensation is set, if the air conditioner will not be used for a long time, please cut off the
power supply to prevent its operation from being resumed after the power is supplied again, or press
the "Switch On/Off" button after the power comes again.
Change-over switch
Mark
1
2
3
4
ON
Fixed Frequency
Have rise and drop
Swing
The collection
temperature of
indoor unit
OFF
Inverter
No rise and drop
Not Swing
The collection
temperature of wire
controller.
In this series changeover switch is set:
1. ON 2.OFF 3.OFF 4.OFF
14
Malfunction
please check the following things about your air conditioner before making a servie call.
Unit fails to start
Is the power source
switch adjust cut in?
ON
OFF
Power supply switch is
not ON.
Is the thermostat adjust
as required?
Isn't the swing louver
horizontal?
(At HEATING mode)
If swing louver is horizontal,
the blow wind does not reach
floor.
The wind does not blow
during heating operation
Isn't it warming up?
page 9
Is city supply power in
normal?
Isn't the signal receiving
section exposed to the
direct sunlight or strong
illumination?
Power
stoppage?
Cooling or heating is not sufficient
Isn't the air filter dirty?
Isn't any doors or windows
left open?
Cooling is not sufficient
Isn't sun-shine invading
direct?
Isn't any unexpected
heating load generated?
Isn't the earth leakage
breaker in action?
It is dangerous. Turn off
the power supply switch
immediately and contact
the sales dealer.
Doesn't any obstacle
exist at the air inlet or
outlet?
Isn't the room much
crowded?
When the air conditioner does not operate properly after you have checked the above mentioned
items or when the following phenomenon is observed, stop the operation of the air conditioner
and contact your sales dealer.
The fuse or breaker often shuts down.
Water drops off during cooling operation.
There is a irregularity in operation or abnormal sound is audible.
Note:
This unit has a function of automatic restart system after recovering power stoppage. Please contact the sales
dealer if it is not required.
15
Malfunction
Failure description
Room temp. sensor abnormal E1
Indoor coil temp. sensor abnormal E2
Outdoor temp. sensor abnormal E3
Outdoor coil temp. sensor abnorma E4
Over-current malfunction E5
High / Low pressure or compressor discharge temperature protection
abnormal
Communication malfunction between indoor PCB and wired controller E8
Communication malfunction between indoor PCB and outdoor PCB E9
The float switch malfunction E0
Code on wired controller
E6
16
Malfunction
The followings are not malfunction
Water flowing
sound is heard.
Shuru
Shuru
Cracking sound is heard.
It smells.
During operation,
white fog comes
out of indoor unit.
It is switched into the FAN mode
during cooling.
The air conditioner can not be
restarted soon after it stops.
Unit does
not start
When the air conditioner is started, when the compressor starts or
stops during operation or when the air conditioner is stopped, it
sometimes sounds "shuru shuru" or "gobo gobo". It is the flowing
sound of the refrigerant, and it is not a trouble.
This is caused by heat expansion or contraction of plastics.
Air which blows out from the indoor unit sometimes smells.
The smell results from residents of tobacco smoke or cosmetics
stuck inside of unit.
When the air conditioner is used at restaurant etc. where dense
edible oil fume is always exists, white fog sometimes blows out
of air outlet during operation.
In this case consult sales dealer for cleaning the heat exchanger.
To prevent frost from being accumulated on the indoor unit heat
exchanger, it is sometimes automatically switched to the FAN mode
but it will soon return to the cooling mode.
Even if the operation switch is turned on, cooling, dehumidifying
or heating is not operable for three minutes after the conditioner is
stopped. Because the protecting circuit is activated.
(During this time air conditioner operates in fan
Wait for
three
minutes
mode.)
Air does not blow or the fan
speed can not be changed during
dehumidifying
During operation, operation mode
has changed over automatically.
Water or steam generates from
the outdoor unit during heating.
When it is excessively cooled during dehumidifying, the blower
automatically repeats reducing and lowering the fan speed.
Isn't the AUTO mode selected?
In the case of AUTO mode, operation mode is changed automatically from cooling to heating or vise-versa according to the room
temperature.
This results when frost accumulated on the outdoor unit is removed
(during defrosting operation).
17
Care and Maintenance
Points to observe
Turn off the power supply switch. Do not touch with wet hand.
ON
OFF
CAUTION
Do not use hot water or volatileliquid.
Do not open the inlet grill until fan stops completely.
Fan will continue rotating for a while by the law of inertia after operation is being stopped.
Cleaning
CAUTION
Do not dry the air filter with fire.
Do not run the air conditioner without the air filter.
Thinner
Do not
use!
Benzine
Tooth powder
Care and Cleaning of the unit
Clean with soft and dry cloth.
If it is very dirty, dissolve neutral detergent in the lukewarm water and make the cloth wet with the water.
After wiping, clean off the detergent using clean water.
Post-Season Care
Operate the unit with FAN mode on a fair day for about half a day to dry the inside of the unit well.
Stop operation and turn off the power supply switch. Electric power is consumed even the air conditioner is in stop.
Clean the air filter and set it in the place.
Pre-Season Care
See that there are no obstacles blocking the air inlet and air outlet of both indoor and outdoor units.
Make sure that the air filter is not dirty.
Cut in the power supply switch 12 hours before starting run.
18
For Preparation of Heating("Hot Keep")
"HOT KEEP"is operated in the following cases.
When heating is started:
In order to prevent blowing out of cool wind, the indoor unit fan stopped
according to the room temperature which heating operation is started. Wait
for approx. 2 to 3 minute, and the operation will be automatically changed
to the ordinary heating mode.
Defrosting operation (in the heating mode):
When it is liable to frost. the heating operation is stopped automatically
for 5 to 12 minutes once per approx. one hour, and defrosting is operated.
After defrosting is completed, operation mode is automatically changed
to ordinary heating operation.
When the room thermostat is actuated:
When room temperature increases and room temperature controller actu-
ates, the fan speed is automatically changed to stop under low temperature
condition of indoor heat exchanger. When room temperature decreases,
air conditioner automatically changes over to ordinary heating operation.
WARMING OPERATION
Heat pump type warming
With the heat pump type warming, the mechanism of heat pump that concentrate heat of outdoor
air with the help of refrigerant to warm the indoor space, is utilized.
Defrosting operation
When a room is warmed with a heat pump type air conditioner, frost accumulates on the heat ex-
changer of outdoor unit along with the drop of indoor temperature. Since the accumulated frost re-
duces the effect of warming, it is necessery to automatically switch the operation to the defrosting
mode. During the defrosting operation, heating operation is interrupted.
Atmospheric temperature and warming capacity
Warming capacity of heat pump type air conditioner decreases along with the
drop of outdoor temperature.
When the warming capacity is not sufficient, it is recommended to use another
heating implement.
Period of warm-up
Since the heat pump type air conditioner employs a method to circulate warm
winds to warm the entire space of a room, it takes time before the room tem-
perature rises.
It is recommendable to start the operation a little earlier in a very cold morning.
19
Is The Unit Installed Correctly
Confirm the following items for safe and comfortable use of air conditioner.
The installation work is to be burden on the sales dealer, and do not conduct it by yourself.
Installation place
Avoid installing the air conditioner
near the place where possibility of
inflammable gas leakage exists.
Explosion (Ignition) may occur.
Select the place so as not to annoy
neighbor with the hot air or noise.
Install the unit at well ventilated
place.
If some obstacle exist, it may cause
capacity reduction or noise increase.
Snow protection work is necessary
where outdoor unit is blocked up
by snow.
For details consult your sales dealer.
Electric work
Install the air conditioner firmly on
the foundation that can fully support
the weight of the unit.
If not, it may cause vibration or noise.
It is advisable not to install the air conditioner at the following special place.
It may cause malfunction, consult the
sales dealer when you have to install
the unit on such a place.
The place where corrosive gas generates
(Hot spring area etc.)
The place where salt breeze blows
(Seaside etc.)
The place where dense soot smoke exists
The place where humidity is extraordinarily high
The place where near the machine which
radiates the electromagnetic wave
The place where voltage variation is considerably large
The electric work must be burden on the authorized engineer with qualification for electric work and
grounding work, and the work must be conducted in accordance with electric equipment technical standard.
The power source for the unit is to be of exclusive use.
An earth leakage breaker should be installed.(This is necessary to prevent electric shock.)
The unit must be grounded.
When you change your address or the installation place
Special technology is required for removal or reinstallation of air conditioner, consult the sales dealer.
Besides, construction expense is charged for removal or reinstallation.
For inspection and maintenance
The capacity of air conditioner will decrease by contamination of inside of unit when it is used for about
three years although depending upon the circumstances under which it is used, and so in addition to the
usual maintenance service, special inspection/maintenance service is necessary. It is recommended to
make a maintenance contract (charged) by consulting your sales dealer.
20
Installation Manual For Wire Controller
1. Remove upper part of wire controller
Remove upper part of wire controller
by press.
PCB is mounted on lower part of wire
controller, be careful not to damage it.
Upper part of wire
controller
Lower part of wire
controller
2. Install wire controller
(1) For exposed installation,
use 2 wood screws .
(2) For recessed installation,
use 2 wood screws .
Note
Try as far as possible a flat surface for installation. Don't use excessive
force when tightening screws, or lower part might got deformed.
21
Installation Manual For Wire Controller
3. Indoor unit wiring
Connect terminals (A,B,C,D) on lower
part of wire controller to terminals (A,
B,C,D) on PCB of indoor unit.
Hint
When make wiring, please keep
a distance between wires and
power supply cord.
AB CD
wiring from here
Lower part of
wire controller
Upper part of
wire controller
Wire size
Cord kind
Size
Use shielede wires for telecommunication
between wire controller and indoor unit;
indoor unit and outdoor unit. Ground the
shield on one side.
Otherwise misoperation because of
noise may occur.
Signal wire is self-provided.
Hint
Tread surface of the terminal well so that
shielding may not contact other part.
4. Replace the upper part of wire controller
Be careful not to press the wiring.
Shield wire (4 core) (refer to Hint 3,4)
0.33mm
Shielded wire
ground
2
Hint
1. Switch box and cord for wiring are not supplied.
2. Don't touch PCB with hand.
22
Installation Manual For Indoor Unit
1. Safety precautions
Please read these "Safety Precautions" first then accurately execute the installation work.
Though the precautionary points indicated herein are divided under two headings,
and , those points which are related to the strong possibility of an installation done in error
CAUTION
resulting in death or serious injury are listed in the section. However, there is also a
possibility of serious consequences in relationship to the points listed in the section as well.
In either case, important safety related information is indicated, so by all means, properly observe all that is
mentioned.
After completing the installation, along with confirming that no abnormalities were seen from the operation
tests, please explain operating methods as well as maintenance methods to the user (customer) of this equipment,
based on the owner's manual.
Moreover, ask the customer to keep this sheet together with the owner's manual.
WARNING
CAUTION
WARNING
This system should be applied to places as office, restaurant, residence and the like. Application to inferior
environment such as engineering shop could cause equipment malfunction.
Please entrust installation to either the company which sold you the equipment or to a professional contractor.
Defects from improper installations can be the cause of water leakage, electric shocks and fires.
Execute the installation accurately, based on following the installation manual. Again, improper installations
can result in water leakage, electric shocks and fires.
When a large air-conditioning system is installed to a small room, it is necessary to have a prior planned
countermeasure for the rare case of a refrigerant leakage, to prevent the exceeding of threshold concentration.
In regards to preparing this countermeasure, consult with the company from which you perchased the equipment,
and make the installation accordingly. In the rare event that a refrigerant leakage and exceeding of threshold
concentration does occur, there is the danger of a resultant oxygen deficiency accident.
For installation, confirm that the installation site can sufficiently support heavy weight. When strength is
insufficient, injury can result from a falling of the unit.
Execute the prescribed installation construction to prepare for earthquakes and the strong winds of typhoons
and hurricanes, etc. Improper installations can result in accidents due to a violent falling over of the unit.
For electrical work, please see that a licensed electrician executes the work while following the safety standards
related to electrical equipment, and local regulations as well as the installation instructions, and that only
exclusive use circuits are used.
Insufficient power source circuit capacity and defective installation execution can be the cause of electric
shocks and fires.
Accurately connect wiring using the proper cable, and insure that the external force of the cable is not conducted
to the terminal connection part, through properly securing it. Improper connection or securing can result in
heat generation or fire.
Take care that wiring does not rise upward, and accurately install the lid/service panel. Its improper installation
can also result in heat generation or fire.
When setting up or moving the location of the air conditioner, do not mix air etc. or anything other than the
designated refrigerant (R407C) within the refrigeration cycle.
Rupture and injury caused by abnormal high pressure can result from such mixing.
Always use accessory parts and authorized parts for installation construction. Using parts not authorized by
this company can result in water leakage, electric shock, fire and refrigerant leakage.
WARNING
CAUTION
Execute proper grounding. Do not connect the ground wire to a gas pipe, water pipe, lightning rod or a
telephone ground wire. Improper placement of ground wires can result in electric shock.
The installation of an earth leakage breaker is necessary depending on the established location of the unit.
Not installing an earth leakage breaker may result in electric shock.
Do not install the unit where there is a concern about leakage of combustible gas.
The rare event of leaked gas collecting around the unit could result in an outbreak of fire.
For the drain pipe, follow the installation manual to insure that it allows proper drainage and thermally insulate
it to prevent condensation. Inadequate plumbing can result in water leakage and water damage to interior
items.
23
Installation Manual For Indoor Unit
NOTICE
All Wiring of this installation must comply with NATIONAL, STATE AND LOCAL REGULATIONS. These
instructions do not cover all variations for every kind of installation circumstance. Should further information be
desired or should particular problems occur, the matter should be referred to your local distributor.
WARNING
BE SURE TO READ THESE INSTRUCTIONS CAREFULLY BEFORE BEGINNING INSTALLATION. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD CAUSE SERIOUS INJURY OR DEATH, EQUIPMENT
MALFUNCTION AND/OR PROPERTY DAMAGE.
1. Before installation [Before finishing installation, do not throw the attached parts installation
needs]
Confirm the way to move the unit to the installation place.
Before moving the unit to the installation place, do not remove their packages.
When have to remove the package, use a soft material or protection board with rope to lift the unit
assembly to avoid unit damage or bumping a scrape.
2. Choose installation place
(1) The chosen installation place should meet the following requirements and get the users consent.
Place ensures ideal airflow distribution.
The passage of airflow has no obstacles.
When importing outside air, it should be imported directly from outdoors. (if the pipe can not be
extended, it also can not be imported from top)
Place ensures enough space for maintenance.
The pipe length between indoor and outdoor unit is in the permitted limit (referring to outdoor unit
installation part).
The indoor unit, outdoor unit, electric wire and connection wire is at least 1m away from television
and radio. This is to avoid the image disturbance and noise caused by the above-mentioned home
appliance. (Even if 1m away, if the electromagnetic wave is too strong, it can also cause noise.)
(2) The height of ceiling
The indoor unit can install on the ceiling, which height is no more than 3m.
(3) Install and use the hoisting screw. Check if the installation place can bear the weight of unit
assembly.
If not certain, strengthen it before install the unit.
Over 100
Air out
Air in
Over 900
Checking meatus
(600x600)
Over 300
Over 200
Ceiling
24
Installation Manual For Indoor Unit
3. Preparation before installation
(1) The position relation among hoisting screw (unit: mm)
360
250
1270
853
794
Down side
1103
Up side
(2) If necessary, cut the opening installation and checking needed on the ceiling. (If has ceiling)
Before installation, finish the preparation work of all the pipes (refrigerant, drainage) and wire
(wire controller connection wire, indoor and outdoor unit connection wire) of indoor unit, so that
after installation, they can be immediately connected with outdoor unit.
Cut the opening on the ceiling. Maybe it needs to strengthen the ceiling to keep the ceiling even
and flat and prevent the ceiling from vibration. For details, please consult to the builder.
(3) Hanger bolts installation
Use care of the piping direction when the unit is installed.
(Use M10 screw bolt)
In order to bear the weight of the unit, for existed
ceiling, using foundation screw bolt, for new ceiling,
using burying embedded screw bolt, burying screw
bolt or spot supplied other parts.
Before going on installation, adjust the gaps with ceiling.
Hole-in anchor
Hole-in plug
Hanging bolt M10
Insert
Concrete
25
Installation Manual For Indoor Unit
4. Installation of indoor unit
Fix the indoor unit to the hanger bolts.
M10 nut
Hanging bolt
M10 washer
If required, it is possible to suspend the unit to the beam, etc.
Directly by use of the bolts without using the hanger bolts.
Main unit
M10 spring washer
Note
When the dimensions of main unit and ceiling holes does not match, it can be adjusted with the slot holes
of hanging bracket.
Adjusting to the levelness
(a) Adjust the out-of levelness using a level or by
the following method.
Make adjustment so that the relation between
the lower surface of the unit proper and water
level in the hose becomes as given below.
Piping side
Supply water
Water level
0~5 mm
(0~0.2")
PVC hose
Bring the piping side slightly lower.
(b) Unless the adjustment to the levelness is made properly, malfunctioning or failure of the float
switch may occur.
5. Drain Piping
(a) Drain piping should always be in a downhill grade (1/50~1/100) and avoid riding across an
elevation or making traps.
Good piping
Suspension
bolts
Heat
insulation
(b)
When connecting the drain pipe to unit, pay suffcient attention not to apply excess force to the piping
1.5m ~ 2m
A downhill grade
of 1/100 or more
Inproper piping
Air vent
Avoid riding across an elevation
Keep free from traps
Do not pipe under water
on the unit side. Also, fix the piping at a point as close as possible to the unit.
Stage
(c)
For drain pipe, use hard PVC general purpose pipe
VP-25(I.D.1") which can be purchased locally. When
connecting, insert a PVC pipe end securely into the
drain socket before tightening securely using the
attached drain hose and clamp. Adhesive must not
Drain socket
Main unit
Drain socket
difference
part
Pipe cover(large)
[for insulation]
(accessory)
Drain hose
VP 25 joint
(field purchased)
be used connection of the drain socket and drain
hose (accessory).
Drain hose
(accessory)
Clamp
(accessory)
Pipe cover(small)
[for insulation]
(accessory)
Adhesion
Pipe cover
[for insulation]
(field purchased)
VP 25
(field purchased)
26
Installation Manual For Indoor Unit
(d)
When constructing drain piping for several units,
position the common pipe about 100 mm below
the drain outlet of each unit as shown in the sketch.
Use VP-30(11/4") or thicker pipe for this purpose.
Secure the elevation as high as possible
(approx. 100 mm)
The stiff PVC pipe put indoor side should be heat insulated.
(e)
Avoid putting the outlet of drain hose in the places with irritant gas generated. Do not insert the drain
(f)
A downhill grade of
1/100 or more
VP 30
hose directly into drainage, where the gas with sulfur may be generated.
(g)
Backwater bend
Because the drain spout is at the position, which negative pressure may occur. So with the rise of water
level in the drain pan, water leakage may occur. In order to prevent water leakage, we designed a
backwater bend.
The structure of backwater bend should be able to be cleaned. As the below figure shown, use T type joint.
The backwater bend is set near the air conditioner.
As figure shown, set a backwater bend in the middle of drain hose.
1
H
2
H
H1=100mm or the static pressure of air sending motor
H2=1/2H1 (or between 50~100mm)
Drainage Test
Conduct a drainage test after completion of the electrical work.
1
During the trial, make sure that drain flows properly through the piping and that no water leaks
2
from connections.
In case of a new building, conduct the test before it is furnished with the ceiling.
3
Be sure to conduct this test even when the unit is installed in the heating season.
4
Procedures
1
Supply about 1000 cc of water to the unit through the air outlet using a feed water pump.
2
Check the drain while cooling operation.
6. Installation of air suction and discharging duct
muffler cavity (air sending)
Sacking joint
Insulation
Air outlet
A
Air conditioner
main unit
Checking meatus
Air volume adjuster
Ceiling
Air suction grille with air filter
Please consult the after-sales service worker of Haier Air Conditioner for the choosing and installation
of suction inlet, suction duct, discharging outlet and discharging duct. Calculating the design drawing
and outer static pressure, and choose the discharging duct with proper length and shape.
27
Enlarging chart of
profile chart A
Vibration resistance hook
Installation Manual For Indoor Unit
The length difference among every duct is limited below 2:1.
Reduce the length of duct as possible as can.
Reduce the amount of bend as possible as can.
Use heat insulation material to bind and seal the part connecting main unit and the flare part of air
discharging duct. Perform duct installation work, before the fitment of ceiling.
Good exampleBad exampleBad example
7. Calculation method of the dimension of the simple quadrate air duct
Presuming the unit length friction impedance of the duct is 1Pa/m, when the dimension of one side of
the air duct is fixed as 250mm, as shown below:
Air conditioner
A
B
A
Static pressure box
A
Equipped with
air filter (bought)
A
B
Air volume
2400m3/h
2000m3/h
Duct
(mmxmm)
250x560
250x470
The calculation of duct resistance (the simple calculation is as follow table)
Straight part
Bend part
Air out part
Static pressure box
Air inlet grille (with air filter)
Calculate as per 1m length 1Pa, 1Pa/m
Each bend takes as a3~4m long straight duct
Calculate as 25Pa
Calculate as 50Pa/each
Calculate as 40Pa/each
The chosen chart of simple duct
Note:1Pa/m=0.1mmAg/m
Shape
Air volume
m3/h(m3/n)
100
200
300
400
500
600(10)
800
1,000
1,200(20)
1,400
1,600
Item
Square duct
Dimension
(mmxmm)
250 x 60
250 x 90
250 x 120
250 x 140
250 x 170
250 x 190
250 x 230
250 x 270
250 x 310
250 x 350
250 x 390
Shape
Item
Air volume
m3/h(m3/n)
1,800(30)
2000
2400
3,000(50)
3,500
4,000
4,500
5,000
5,500
6,000(100)
Square duct
Dimension
(mmxmm)
250 x 430
250 x 470
250 x 560
250 x 650
250 x 740
250 x 830
250 x 920
250 x 1000
250 x 1090
250 x 1180
28
Installation Manual For Indoor Unit
8. The attentive matters in installation of air suction and discharging duct
Recommend to use anti-frost and sound-absorbing
duct. (locally bought)
The duct installation work should be finished
before the fitment of ceiling.
The duct must be heat insulated.
The specific air-discharging outlet should be installed at
the place where the airflow can be reasonably distributed.
The surface should leave a checking meatus for checking
and maintenance.
Special air discharging outlet
Use screw bolt to fix
Air
Air
Duct
9. The examples of improper installation
Do not use air in duct and take the ceiling inner side instead. The result is because of the irregular
outer air mass, strong wind and sunshine, the humidity is increased.
There may be water drop on the outside of duct. For cement and other new constructions, even if
not taking ceiling inner side as duct, the humidity will also be so high. At this time, use glass fiber
to perform heat preservation to the whole. (use iron net to bind the glass fiber)
Affected by the capacity of air discharging fan, the strong wind in the outer duct and wind direction,
when unit air sending volume exceeds the limit, the discharged water of heat exchanger will overflow,
leading to water leakage.
Air discharging fan
Improper example
29
Installation Manual For Indoor Unit
10. The operation method of fan controller
Through the fan controller switch in the electric box, the air volume of this unit can be continuously
adjusted.
It is unnecessary to adjust air volume through the duct side wind level (unit outside static adjustment).
The air volume set should be in the operation air volume range.
Figure I shows the position of fan controller in the electric box and operation method.
After finishing the electric work, perform test run. According to the main points in Figure II making the
chosen switch No. accordant. And confirm if it reaches the needed air volume.
Note:
1) When operating the fan controller, it is possible to touch the electric charging part, so do cut off the
power supply.
2) Do not set the dial at the position less than 1.
3) The figure circled in Figure II indicate the capacity number of fan controller. The non-listed capacity
number may exceed the permitted operation capacity range, so it is impossible to operate.
4) When delivering from factory, the capacity number of fan controller is set at No.5.
(There is no fan controller for HDU-42CF03/H,HDU-42HT03/H)
Rotate this switch
Condition of standard air volume
(capacity number
setting:
No. 1 ~ No. 8)
Once the fan controller
has trouble, this linker
can perform emergency
assistant control. When
this linker is connected
to the linker from the
PCB, it can operate with
total load.
When this linker is
connected to the linker
from the PCB, through
the fan speed adjustment
panel to adjust speed.
Figure 1
High
(air volume 100Pa)
Low
200
150
100
Outer static pressure Pa
50
0
26 30 34 35 40 43
Lower limit
Standard air volume
(m3/min)
Upper limit
Figure 2
Example of
duct
The example of the method of choosing capacity number:
1) If the unit is in high-speed operation, needing take outer static pressure is 180Pa in capacity air volume 34m3/min
as working condition point, according to Figure II The characteristic chart of air volume, the capacity number
of fan controller is No. 2.
2) If the unit is in low speed operation, needing take outer static pressure is 60Pa in capacity air volume 32m
working condition point, according to Figure II The characteristic chart of air volume, the capacity number
of fan controller is No. 4.
3
/min as
30
Installation Manual For Indoor Unit
11. Refrigerant pipe
[The air side pipe, liquid side pipe must be faithfully heat insulated, if no heat insulation, it may cause
water leakage.]
The outdoor unit has been charged with refrigerant.
When connect the pipe to the unit or dismantling the pipe from the unit, please follow the figure shown,
use spanner and torque spanner together.
When connect cone nut, the inner side and outside of cone nut should paste with refrigerant oil. Use
hand to twist 3-4 rings, then fasten with spanner.
Referring to Table I to confirm the fasten torque. (too tight may damage nut leading to leakage)
Check if the connection pipe leaks, then do heat insulation treatment, as below figure shown.
Only use seal cushion to bind the joint part of air pipe and heat insulation parts.
Paste the refrigerant oil here
Torque spanner
Pipe joint
Cone nut
Liquid pipe
Air inlet
Drain hose connection mouth
VP25 PVC pipe
Spanner
80 510
Gas pipe
Middle size seal cushion
(Use seal cushion to
bind the pipe joint)
Clamp
Gas pipe
Liquid pipe
Electric box
Upper
Down side
530
Heat insulation
(for liquid pipe)
Heat insulation
(for gas pipe)
Air outlet
310
30
Specification of pipe
(mm)
9.52
15.88
19.05
Tighten torque
3270~3990 N.cm
(333~407 kgf.cm)
6180~7540 N.cm
(630~770 kgf.cm)
9720~11860 N.cm
(990~1210 kgf.cm)
Cone dimension
A (mm)
12.0~12.4
18.6~19.0
22.9~23.3
31
45 2
90 0.5
Cone
R0.4~0.8
A
Installation Manual For Electric Wiring
5. Electric wiring
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.
(1) 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.)
Circuit breaker
(A)
Overcurrent protector
rated capacity (A)
Power source
wire size
(minimum)
Model
Item
Phase
Switch breaker
HDU-42CF03/H
HDU-42HF03/H
3
30 20 2.5mm
HDU-42HT03/H
(2) Wiring connection
Make wiring to supply power to the outdoor unit, so that the power for the indoor unit is supplied by
terminals.
Note: For HDU-42CF03/H,HDU-42HF03/H remember to connect the black terminal of indoor unit
with the black terminal of outdoor unit properly using the connecting wire in the accesory bag,and
connect the blue terminal of indoor unit with the white terminal of out terminal as the same(For heat
pump model).For cooling only unit,just connect the black terminalof indoor unit with the black
terminal of outdoor unit properly.Otherwise the wired controller will display "E4" or "E6"
malfunction refer to Page.16.
Earth leakage breaker
Switch
breaker
2
30 30mA
Leak
current
Y/G
POWER SUPPLY:
3N~,380-400V , 50Hz
HDU-42CF03/H
OUTDOOR UNIT TERMINAL BLOCK
R S T
N 1 2 3
1 2 3 4 5
INDOOR UNIT TERMINAL BLOCK
Y/G
Y/G
R S T N
HDU-42HT03/H
N 1 2 3R S T
POWER SUPPLY:
3N~,380-400V , 50Hz
32
HDU-42HF03/H
Y/G
POWER SUPPLY:
3N~,380-400V,50Hz
1 2 3
INDOOR UNIT TERMINAL BLOCK
OUTDOOR UNIT TERMINAL BLOCK
L N 3 4 5
1 2 3 4 5
INDOOR UNIT TERMINAL BLOCK
Y/G
Y/G
HAIER GROUP
Qingdao Haier Air Conditioner Electric Co., Ltd.
Address: Haier Garden ,Qianwangang Road , Economic Development Zone,
Qingdao ,Shandong 266500, P.R.C
Web Site: http://www.haier.com
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