Haier HDU-42CA03T3, HDU-50CA03T3, HDU-42CA03T3/H, HDU-50CA03T3/H, HDU-60CA03T3/H Operation & Installation Manual

No. 0150503608

A

DUCT TYPE CENTRAL AIR CONDITIONER

Indoor unit Operation & Installation Manual

please read this operation manual before using the air conditioner.

please keep this manual carefully and safely.

HDU-42CA03T3/H
HDU-50CA03T3/H
HDU-60CA03T3/H

1

Table of Contents

Operation

9-14

Malfunction

15-17

Care and Maintenance

18

Is The Unit Installed Correctly

19

Installation Manual For Wire Controller

20-21

Installation Manual For Indoor Unit

22-29

Installation Manual For Electric Wiring

30

Safety Precautions

3-5

Parts and Functions

6-8

Cautions

2

Cautions

2

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.

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.

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

important observations relating to the
assembly, operation and maintenance of the
air conditioner.

Installation shall be done by professional
people, don't install unit by yourself.

All these valuable materials may be taken to
a waste collecting center and used again
after adequate recycling.

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.

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.

The manufacturer does not accept
responsibility for any damages that may arise
due to non-observation of the following
instruction.

Before starting the air conditioner, read the
information given in the User's Guide
carefully. The User's Guide contains very

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.

ON

OFF

WARNING

CAUTION

WARNING

CAUTION

CAUTIONS FOR INSTALLATION

The system should be applied to places as
office, restaurant, residence and the like.

The system should be installed by your
dealer or a professional installer.

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.

Application to inferior environment such as an engi­neering shop, could cause equipment malfunction and
serious injury or death.

Installation by yourself is not encouraged because
it could cause such problems as water leakage,
electrical shock or fire accident by some improper
handing.

Installation by yourself is not encouraged because it
could cause such problems as water leakage, electrical
shock or fire accident by some improper handing.

Do not install nearby the place where may
have leakage of flammable gas.

Depending on the place of installation, a
circuit breaker may be necessary.

Drain pipe should be arranged to provide a
positive draining.

If the gas leakes and gathers around, it may cause the
fire.

Unless the circuit breaker is installed, it could
cause elecrical shocks.

Where strong winds may prevail, the
system should be fixed securely to prevent
a collapse.

Install on the place where can endure
the weight of air conditioner.

Make sure the system is grounded.

If the pipe is arranged improperly, furniture or the
likes may be damaged by leaked water.

Bodily injury could result by a collapse.

Bodily injury could result by a careless installation.

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.

CAUTIONS FOR OPERATION

You should refrain from exposing your body
directly to cool wind for a long time.

Do not poke the air inlet or outlet with a
bar, etc.

When any abnormal condition (scorching smell or oth­ers) is found, stop the operation immediately and turn
off the power switch. Then consult your dealer.

It could affect your physical condition or cause some
health problems.

Since the internal fan is operating with a high
speed, it could cause an injury.

If you continue the operation without removing the
cause, it could result in a trouble, electric shock or fire.

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.

Do not handle switches with a wet hand.

Combustion apparatus should not be placed
allowing a direct exposure to wind of air con­ditioner.

Incomplete combustion could occur on the apparatus.

It could cause electric shocks.

It could cause deterioration of food or other problems.

3

Safety Precautions

4

CAUTION

Do not wash the air conditioner with water.

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.

Do not operate the system while the
air outlet grill is removed.

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.

Neither stand on the air conditioner nor
place something on it.

Do not use the power switch to turn on or
off the system.

Do not touch the air outlet section while
the swing louver is operating.

Do not use such equipment as a water
heater, etc. around the indoor unit or the
wire controller.

ON

OFF

It could cause electric shocks.

It will not be good for their health.

Use of steel or copper wire in place of a fuse is strictly
prohibited because it could result in a trouble or fire
accident.

There is a risk of injury.

It could cause a fire accident.

There are risks of falling or injury by collapsed object.

It could cause a fire or water leakage. There is a risk of injury.

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.

When operating the system simultaneously
with a combustion apparatus, indoor air must
be ventilated frequently.

Check occasionally the support structure of
the unit for any damage

after a use of long

period of time.

Insufficient ventilation could cause an
oxygen deficiency accident.

If the structure is not repaired immediately, the
unit could topple down to causea personal injury.

When cleaning the system, stop the operation
and turn off the power switch.

Do not put water containers on the unit
such as a flower vase, etc.

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.

WARNING

CAUTIONS FOR TRANSFER OR REPAIR

Modification of the system is strictly prohibited. When the system
needs a repair, consult your dealer.

When the air conditioner is relocated, contact your dealer or a pro­fessional installer.

Improper practice of repair could cause water leakage, electric shock or fire. Improper practice of installation could cause water leakage, electric shock or fire.

Do not place any objects on or climb on
the unit.

Do not try to repair or reconstruct by yourself.

5

The machine is adaptive in following situation

1. If the supply cord is damaged, it must be replaced by the manufacturer
or its service agentor a similar qualified person.

2. The wiring method should be in line with the local

3. The power cable and connecting cable are self-provided. The power
cable should be H05RN-F 5G 2.5mm

2

.The connecting cable should

be H07RN-F 4G 0.75mm

2

.During installation,when the connecting
cables break off, it must be assured that the grouding wire is the last
one to be broken off.

Safety Precautions

4. The breaker of the air conditioner should be all-pole switch; and the
distance between its two contacts should be no less 3mm.

5. The indoor unit installation height is at least 2.5m.

6

Indoor Unit

Air outlet

Air inlet

Duct

Duct

Drain pipe

Parts and Functions

7

Buttons and display of the wire

Note:
The above information is the explanation of
the displayed information therefore varies
with those displayed in actual operation.

CLOCK

Used to set correct time.

TIMER

Used to select
TIMER ON,
TIMER OFF,
TIMER ON/OFF.

MODE

Used to select AUTO
RUN, COOL, DRY,
HEAT and FAN
operation.

Parts and Functions

HEALTH

HEAT

FAN SPEED

Used to select fan
speed: LO, MID, HI,
AUTO

SET

Used to confirm Timer
and Clock settings.

SLEEP

Used to select sleep
mode.

TEMP

Used to select your
desired temp.

HEALTH

Used for setting indoor
health function

Used for unit start and
stop.

Power ON/OFF

TIME

Used to set clock and
timer setting.

HEAT

Used to start/stop auxiliary electric
heater when in heating operation

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

SWING

Used to set UP/DOWN
air sending and
RIGHT/LEFT
air sending direction.

8

Buttons and display of the wire controller.

Clock set

When unit is started for the first time, clock should be adjusted as follows:
Press CLOCK button, "AM"or "PM" flashes.

OPERATING LAMP

DRY

COOL

AUTO

FAN SPEED

SLEEP

TIMER ON

TIMER OFF

CLOCK

TEMP.

FAN OPERATION

Remote control

Parts and Functions

HEAT

HEALTH

HEAT

HEALTH

ELECTRIC HEATER

HEALTH

HEAT

9

Operation

Fan operation

Enjoy yourself by just a gentle press.

(1) Unit start

(2) Select operation mode

(3) Fan

Press ON/OFF button, unit starts.
Previous operation status appears on display.
(Not Timer setting)
Power indicator lights up.

Press MODE button. For each press, operation
mode changes as follows:

Press FAN button. For each press, fan speed
changes as follows:

Unit will run at selected fan speed.

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.

Hints

AUTO COOL DRY FAN

The air conditioner has the function of POWER

FAILURE RESUME.

(4) Unit stop

Press ON/OFF button.
Only time and room temp remains on LCD.
All indicators go out.
Vertical flap closed automatically.

LOW

MID HIGH

10

HEALTH

HEAT

4

AUTO RUN, COOL and DRY operation

Use COOL in summer.
Use DRY in spring,autumn and in damp climate.

(1) Unit start

(2) Select operation mode

(3) Select temp. setting

Press ON/OFF button, unit starts.
Previous operation status appears on display
(Not Timer setting). Power indicator lights up.

Press MODE button. For each press, operation mode
changes as follows:

Unit will run in operation mode displayed on LCD.
Stop display at your desired mode.

Recommendations

Unit will start running to reach the temp. setting
on LCD.

Press TEMP button

AUTO COOL DRY FAN

Operation

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.

Press FAN button. For each press, fan speed changes
as follows:

(4) Fan speed selection

Press ON/OFF button.
Only time and room temp remains on LCD.
All indicators go out.
Vertical flap closes automatically.

(5) Unit stop

AUTO

LOW

MID HIGH

AUTO

HEALTH

HEAT

OFF

blank

ON

OFF

ON

11

TIMER operation

Hints

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.

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:

Select your desired TIMER mode (ON or OFF)

(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.

TIMER ON/OFF

To cancel TIMER mode

Just press TIMER button several times until TIMER mode disappears.

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.

(1)After unit start, select your desired
operation mode.

Operation

12

HEALTH

HEAT

OFF

blank

ON

OFF

ON

TIMER ON-OFF

Operation mode will be displayed on LCD.
Power indicator lights up.

Every time the button is pressed, display changes as follows:

Select .

(3)Time setting for TIMER ON

Press TIME button.

To cancel TIMER mode

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.

(5)Time setting for TIMER OFF

Time displayed: Unit starts at Xhour X min.

After time setting, press TIMER button to confirm.

"ON" stops blinking, While "OFF" starts blinking.

(4) Time confirming for TIMER ON

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.

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.

(1)After unit start, select your desired
operation mode

(2) Press TIMER button to change TIMER
mode

ON
OFF

Operation

HEALTH

HEAT

13

Operation

about 6 hrs

1 hr

1 hr

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

SETTING T

SLEEP RUN BEGINS SLEEP RUN STOPS

1 hr

1 hr

3 hrs

about 3 hrs

SHUT DOWN

SLEEP RUN STOPS

SLEEP RUN BEGINS

SETTING T

SHUT DOWN

Comfortable Sleep

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.

Mark

1

2

3

ON

Inverter
Filter
Swing

OFF

Fixed Frequency

Not Filter

Not Swing

4

The collection
temperature of
indoor unit

The collection

temperature of wire

controller.

Dip Switch Setting

14

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.

In this series dip switch is set:

1. ON 2.OFF 3.OFF 4.OFF

Operation

ON

DIP

15

please check the following things about your air conditioner before making a servie call.

Unit fails to start

Malfunction

ON

OFF

Is the power source
switch adjust cut in?

Is city supply power in
normal?

Power
stoppage?

Isn't the signal receiving
section exposed to the
direct sunlight or strong
illumination?

Isn't the earth leakage
breaker in action?

It is dangerous. Turn off
the power supply switch
immediately and contact
the sales dealer.

Power supply switch is
not ON.

Cooling or heating is not sufficient

Is the thermostat adjust
as required?

Isn't the air filter dirty?

Isn't any doors or windows
left open?

Doesn't any obstacle
exist at the air inlet or
outlet?

Cooling is not sufficient

Isn't sun-shine invading
direct?

Isn't any unexpected
heating load generated?

Isn't the room much
crowded?

Isn't the swing louver
horizontal?
(At HEATING mode)

If swing louver is horizontal,
the blow wind does not reach
floor.

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.

Malfunction

16

E6

Temperature cutoff protection

Error display

E1

E2

E3

E4

E5

E7

E8

E9

E0

Lack of phase or protection of incorrect phase sequence

E10

Failure description

Room temp. sensor abnormal

Indoor coil temp. sensor abnormal

Outdoor coil temp. sensor or discharge pipe temperature sensor abnorma

Over-current malfunction

Communication malfunction between indoor PCB and wired controller

Communication malfunction between indoor PCB and outdoor PCB

Code on wired controller

Outdoor temp. sensor abnormal

High / Low pressure or compressor discharge temperature protection
abnormal

The float switch malfunction

17

The followings are not malfunction

Shuru

Shuru

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.

Water flowing
sound is heard.

This is caused by heat expansion or contraction of plastics.

Cracking sound is heard.

It smells.

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.

During operation,
white fog comes
out of indoor unit.

Unit does
not start

Wait for
three
minutes

It is switched into the FAN mode
during cooling.

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
mode.)

The air conditioner can not be
restarted soon after it stops.

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).

Malfunction

18

Points to observe

Turn off the power supply switch. Do not touch with wet hand.

Do not use hot water or volatileliquid.

ON

OFF

Thinner

Do not
use!

Benzine

Tooth powder

Cleaning

CAUTION

Do not dry the air filter with fire.
Do not run the air conditioner without the air filter.

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.

CAUTION

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.

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.

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.

Care and Maintenance

19

For inspection and maintenance

When you change your address or the installation place

Electric work

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.

Install the unit at well ventilated
place.

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.

If some obstacle exist, it may cause
capacity reduction or noise increase.

Explosion (Ignition) may occur.

Select the place so as not to annoy
neighbor with the hot air or noise.

Snow protection work is necessary
where outdoor unit is blocked up
by snow.

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

For details consult your sales dealer.

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.

Special technology is required for removal or reinstallation of air conditioner, consult the sales dealer.
Besides, construction expense is charged for removal or reinstallation.

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.

Is The Unit Installed Correctly ?

20

Installation Manual For Wire Controller

1. Remove upper part of wire controller

Remove upper part of wire controller

by press.

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.

PCB is mounted on lower part of wire
controller, be careful not to damage it.

Lower part of wire
controller

Upper part of wire
controller

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.

Hint

Tread surface of the terminal well so that

shielding may not contact other part.

Cord kind

Size

Shield wire (4 core) (refer to Hint 3,4)

0.33mm

2

Wire size

4. Replace the upper part of wire controller

Hint

Be careful not to press the wiring.

1. Switch box and cord for wiring are not supplied.

2. Don't touch PCB with hand.

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.

Shielded wire

ground

Lower part of

wire controller

AB CD

Upper part of

wire controller

wiring from here

22

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
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.

CAUTION

WARNING

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.

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.

Installation Manual For Indoor Unit

23

1. Before installation [Before finishing installation, do not throw the attached parts installation
needs]

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.

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 users 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.

(600x600)

Over 100

Over 900

Air out

Air in

Checking meatus

Ceiling

Over 300

Over 200

Installation Manual For Indoor Unit

24

(1) The position relation among hoisting screw (unit: mm)

3. Preparation before installation

4. Installation of indoor unit

Fix the indoor unit to the hanger bolts.
If required, it is possible to suspend the unit to the beam, etc.
Directly by use of the bolts without using the hanger bolts.

When the dimensions of main unit and ceiling holes does not match, it can be adjusted with the slot holes
of hanging bracket.

Note

Hanging bolt

M10 nut

Main unit

M10 washer

M10 spring washer

Installation Manual For Indoor Unit

360

1270

250

794

Up side

Down side

853

1103

(3) Hanger bolts installation

Use care of the piping direction when the unit is installed.

Hanging bolt M10

Hole-in anchor
Hole-in plug

Insert

Concrete

(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.

(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.

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.

(b) Unless the adjustment to the levelness is made properly, malfunctioning or failure of the float
switch may occur.

PVC hose

Piping side

Supply water

Water level

0~5 mm

(0~0.2")

Bring the piping side slightly lower.

Drain hose

Stage
difference
part

Drain socket

Drain socket

Main unit

VP 25 joint
(field purchased)

Pipe cover(large)
[for insulation]
(accessory)

VP 25
(field purchased)

Pipe cover
[for insulation]
(field purchased)

Drain hose
(accessory)

Pipe cover(small)
[for insulation]
(accessory)

Clamp
(accessory)

Adhesion

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
be used connection of the drain socket and drain
hose (accessory).

(c)

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.

When connecting the drain pipe to unit, pay suffcient attention not to apply excess force to the piping
on the unit side. Also, fix the piping at a point as close as possible to the unit.

Do not pipe under water

Keep free from traps

Avoid riding across an elevation

Air vent

Inproper piping

Good piping

1.5m ~ 2m

Suspension
bolts

Heat
insulation

A downhill grade
of 1/100 or more

(b)

Installation Manual For Indoor Unit

25

Fan motor terminals selection

The fan motor terminals (Fan motor speed and static pressure )should be adjust during installation procedure
to suit for different duct .Fan motor have Blue ,red and white three sets terminals,the detailed selection
methods are as follows:

The standard terminal is White during delivery,pls. select according to real condition request.

Static pressure data

Connection terminals

Blue Red White

100Pa 80Pa 50Pa

26

Drainage Test

Conduct a drainage test after completion of the electrical work.
During the trial, make sure that drain flows properly through the piping and that no water leaks
from connections.
In case of a new building, conduct the test before it is furnished with the ceiling.
Be sure to conduct this test even when the unit is installed in the heating season.

Procedures

Supply about 1000 cc of water to the unit through the air outlet using a feed water pump.
Check the drain while cooling operation.

(g)

1

2

3

4

1

2

VP 30

Secure the elevation as high as possible
(approx. 100 mm)

A downhill grade of
1/100 or more

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.

(d)

(e)

The stiff PVC pipe put indoor side should be heat insulated.

(f)

Avoid putting the outlet of drain hose in the places with irritant gas generated. Do not insert the drain
hose directly into drainage, where the gas with sulfur may be generated.

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.

H

1

H

2

H1=100mm or the static pressure of air sending motor
H2=1/2H1 (or between 50~100mm)

6. Installation of air suction and discharging duct

A

Insulation

muffler cavity (air sending)

Sacking joint

Air volume adjuster

Air outlet

Enlarging chart of
profile chart A

Vibration resistance hook

Checking meatus

Air conditioner
main unit

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.

Installation Manual For Indoor Unit

27

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

Good exampleBad exampleBad example

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.

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:

Note:1Pa/m=0.1mmAg/m

The chosen chart of simple duct

m3/h(m3/n)

100
200
300
400
500
600(10)

800
1,000
1,200(20)

250 x 60

(mmxmm)

250 x 90
250 x 120
250 x 140

250 x 170
250 x 190
250 x 230
250 x 270
250 x 310

Shape

Item

Air volume

Square duct

Dimension

m3/h(m3/n)

1,400
1,600

1,800(30)
2000
2400
3,000(50)
3,500
4,000
4,500
5,000
5,500
6,000(100)

(mmxmm)

250 x 350
250 x 390

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

Shape

Item

Air volume

Square duct

Dimension

Static pressure box

Air conditioner

Equipped with
air filter (bought)

B

A

A

A

Installation Manual For Indoor Unit

2000m3/h

Duct

(mmxmm)

2400m3/h

250x560

250x470

Air volume

B

A

28

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.

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

Air

Duct

Special air discharging outlet

Use screw bolt to fix

Air discharging fan

Improper example

Installation Manual For Indoor Unit

29

10. 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

Spanner

Pipe joint

Cone nut

Middle size seal cushion

(Use seal cushion to
bind the pipe joint)

Clamp

Heat insulation

(for liquid pipe)

(for gas pipe)

Heat insulation

Gas pipe

Liquid pipe

Liquid pipe

Gas pipe

Electric box

Upper

Air inlet

Air outlet

Down side

Drain hose connection mouth
VP25 PVC pipe

9.52

12.0~12.4

18.6~19.0

3270~3990 N.cm
(333~407 kgf.cm)

6180~7540 N.cm
(630~770 kgf.cm)

(mm)

Specification of pipe

15.88

Tighten torque

Cone

Cone dimension
A (mm)

R0.4~0.8

A

90 0.5

45 2

Installation Manual For Indoor Unit

22.9~23.3

9720~11860 N.cm
(990~1210 kgf.cm)

19.05

310

30

530

80 510

30

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.)

(2) Wiring connection

Make wiring to supply power to the outdoor unit, so that the power for the indoor unit is supplied by
terminals.

Item

Model

Phase

Switch breaker

(A)

Circuit breaker

Overcurrent protector

rated capacity (A)

Power source

wire size

(minimum)

Switch

breaker

Earth leakage breaker

Leak

current

3

30 20 2.5mm

2

30 30mA

Installation Manual For Electric Wiring

HDU-42CA03T3/H
HDU-50CA03T3/H
HDU-60CA03T3/H

N 1 2 3R S T

INDOOR UNIT TERMINAL BLOCK

Y/G

1 2 3

POWER SUPPLY£”

3N~,380-400V , 50Hz

Y/G

OUTDOOR UNIT TERMINAL BLOCK