Haier HDU-42HF03/H, HDU-42HK03, HDU-42HK03/H, HDU-42CI03/H, HDU-50HT03/H Installation Instructions Manual

ROOM AIR CONDITIONER

OUTDOOR UNIT

No.0010576723
H

Before using the air conditioner,please read this manual carefully.
Please keep this manual properly for future use.

CONTENTS

Name of Parts----------------------1
Safety Cautions------------------2-3
Installation Procedure---------4-13

INSTALLATION INSTRUCTIONS

HBU-42CF03 HDU-42CF03/H
HBU-42HF03 HDU-42CH03/H

HBU-28CF03

HBU-28HF03

HDU-42HF03/H
HDU-42CI03/H
HDU-42HK03/H
HDU-50HT03/H

Name of Parts

1

HBU-42CF03
HBU-42HF03
HDU-42CF03/H
HDU-42CH03/H

HBU-28CF03

Air inlet

Air outlet

(Inside of unit)

Compressor

Air inlet

Air outlet

(Inside of unit)

Compressor

HBU-28HF03

Air inlet

Air outlet

(Inside of unit)

Compressor

Air inlet

Air outlet

(Inside of unit)

Compressor

HDU-42HF03/H
HDU-42CI03/H
HDU-42HK03/H

HDU-50HT03/H

Below are listed three kinds of Safety Cautions and Suggestions.

WARNING!

CAUTION!

Incorrect operations may result in injuries or machine damages; in some cases may
cause serious consequences.

Incorrect operations may result in severe consequences of death or serious injuries.

INSTRUCTIONS: These information can ensure the correct operation of the machine.

Be sure to conform with the following important Safety Cautions.

The Safety Cautions should be at hand so that they can be checked at any time when needed.

If the conditioner is transferred to the new user, this manual should be as well transferred to the
new user.

Safety Cautions

Carefully read the following information in order to operate the airconditioner
correctly.

WARNING!

If any abnormal phenomena is found

(e. g.smell of firing), please cut off the

power supply immediately, and contact

the dealer to find out the handling

method.

Don't dismantle the outlet of the
outdoor unit.

The exposure of fan is very dangerous
whichmay harm human beings.

switch

off

In such case, to continue using the

conditioner will damage the conditioner,

and may cause electrical shock or fire

hazard.

Incorrect maintenance and repairment

may cause water leak, electrical shock

and fire hazard.

When need maintenance and repairment,

call dealer to handle it.

After a long time use of air-conditioner
the base should be checked for any
damages.

If the damaged base is not repaired, the
unit may fall down and cause accidents.

2

Air-conditioner can't be installed in
the environment with inflammable
gases because the inflammable gases
near to air-conditioner may cause fire
hazard.

Connect earthing wire.

Use discharge pipe correctly to ensure
efficient discharge.

Earthing wire should not be con­nected to the gas pipe, water pipe,
lightning rod or phone line, in­correct earthing may cause shock.

Incorrect pipe use may cause water
leaking.

Earthing

Safety Cautions

WARNING!

Installed electrical-leaking circuit
breaker.

It easily cause electrical shock without
circuit breaker.

Please let the dealer be responsible for
installing the conditioner.

Incorrect installation may cause water

leak, electrical shock and fire hazard.

Call the dealer to take measures to

prevent the refrigerant from leaking.

If conditioner is installed in a small

room be sure to take every measure in

order to prevent suffocation accident

even in case of refrigerant leakage.

When conditioner is deinstalled or

reinstalleddealer should be respon-

sible for them.

Incorrect installation may cause water

leaking, electrical shock and fire hazard.

No goods or nobody is permitted to
placed on or stand on outdoor unit.

The falling of goods and people may
cause accidents.

Don't operate the air-conditioner with
damp hands.

Otherwise will be shocked.

Only use correctly-typed fuse.

May not use wire or any other materials
replacing fuse, other-wise may cause
faults or fire accidents.

3

Note :
(1). Fix the parts with screws
(2).Don't intake the strong wind directly to the

outlet air-flow hole.
(3).A one meter distance should be kept from the

unit top
(4).Don't block the surroundings of the unit with

sundries

Installation Procedure

2. Selection of the place of installation

1. Accessories

"Edging" for protection of electric wires from an
opening edge.

Select the place of installation satisfying the following conditions and, at the
same time, obtain a consent from the client or user.

Edging

Place where air circulates.
Place free from heat radiation from other heat sources.
Place where drain water may be discharged.
Place where noise and hot air may not disturb the neighborhood.
Place where there is not heavy snowfall in the winter time.
Place where obstacles do not exist near the air inlet and air outlet .
Place where the air outlet may not be exposed to a strong wind.
Place surrounded at four sides are not suitable for installation. A 1m or more
of overhead space is needed for the unit.
Mount guide-louvers to place where short-circuit is a possibility.
When installing several units, secure sufficient suction space to avoid short
circuiting.

Wind direction

NO

(2) Installation where the area with strong winds.

Install the unit so that the air outlet section of the unit must NOT be faced
toward wind direction.

(1) Open space requirement around the unit

L

2

L

3

L

1

500

(Servicing
space)

Air outlet

Air inlet

Air
inlet

Case

Distance

Unit: mm

open

open

open

500

150

150

300

300

0

L

1

L2

L3

I

II

III

Installation of outdoor unit

4

(2) Installation sketch of outdoor unit

310

3. Installation of outdoor unit

Fix the unit in a proper way according to the condition of a place where it is
installed by referring to the following .

(1) Installation

Installation of outdoor unit

5

Installation Procedure

635

340

Power Wiring Terminal

Power Wiring
Distribution Hole

25

862

730

HBU-28CF03

(b) Foundation anchor

(a) Concrete foundation

Install the unit so that the angle of inclination must be less than 3 degrees.

Note: (1) Give enough room for the concrete
foundation to fix by anchor bolts.

Note: (1) Place the concrete foundation deep enough.

Unit

To fix by bolts

Anchor bolt

Concrete foundation

Unit

Concrete foundation

Anchor bolt

(a) Concrete foundation (b) Foundation anchor

Concrete foundation

Unit

Anchor bolt

Anchor bolt

Concrete foundation

Unit

To fix by bolts

340

410

Installation of outdoor unit

6

Installation Procedure

580

380

Power Wiring Terminal

Power Wiring
Distribution Hole

25

948

840

HBU-28HF03

Power Wiring Terminal

Power Wiring

Distribution Hole

646

447

2

5

1008

830

HBU-42CF03 HDU-42CF03/H
HBU-42HF03 HDU-42CH03/H

340

Outdoor
unit

Gas pipe

Liquid
pipe

Flare connection

Indoor
unit

3-way stop valve

3-way stop valve

Installation of outdoor unit

7

Installation Procedure

Outdoor
unit

Gas pipe

Liquid
pipe

Flare connection

Indoor
unit

3-way stop valve

2-way stop valve

4. Refrigerant piping

580

380

948

Power wiring Terminal

25

1250

HDU-42CI03/H HDU-42HK03/H
HDU-42HF03/H

HBU-28HF03

HBU-28CF03 HBU-42CF03 HBU-42HF03 HDU-42CI03/H HDU-42CH03/H

HDU-42CF03/H HDU-42HF03/H¡¡ HDU-50HT03/H HDU-42HK03/H¡¡¡¡

HDU-50HT03/H

(2) Piping size

Install the removed flare nuts to
the pipes to be connected, then
flare the pipes.

(3) Limitations for one way piping length and vertical height difference.

Precautions for refrigerant piping

Do not twist or crush piping.
Be sure that no dust is mixed in piping.
Bend piping with as wide angle as possible.
Keep insulating both gas and liquid piping.
Check flare-connected area for gas leakage.

Connecting method (indoor unit)
Apply refrigerant oil at half union as large and flare nut.
To bend a pipe, give the roundness as possible not to crush
the pipe.
When connecting pipe, hold the pipe centre to centre then
screw nut on by hand, refer to Fig.
Be careful not to let foreign matters, such as sands enter
the pipe.

(4) Piping connection

Forced fastening without centering
may damage the threads and cause a
gas leakage.

Pipe dia Fastening torque

Liquid pipe 6.35mm

Gas pipe 15.88mm

Liquid pipe 9.52mm

Gas pipe 19.05mm

14.2-17.2N.m

61.8-75.4N.m

32.7-39.9N.m

97.2-118.6N.m

Gas pipe 12.7mm

49.5-60.3N.m

HDU-42CH03/H HDU-42CI03/H
HDU-42HK03/H HDU-50HT03/H

Gas pipe

Liquid pipe

Gas pipe

9.52x0.8mm

15.88x1.0mm

9.52x0.8mm

19.05x1.0mm

Liquid pipe

Refrigerant piping

8

90+0.5

Installation Procedure

Model

One way piping length

Vertical height difference
(between indoor and outdoor)

less than 40 m

HBU-42CF03 HBU-42HF03
HDU-42CF03/H HDU-42HF03/H

HBU-28CF03 HBU-28HF03

less than 50 m

less than 15 m

less than 30 m

HBU-42CF03
HBU-42HF03
HDU-42CF03/H

HBU-28CF03
HBU-28HF03

HDU-42HF03/H
HDU-50HT03/H

HDU-42CH03/H
HDU-42CI03/H
HDU-42HK03/H

In the first to third test steps, if the pressure drops, check the leakage in each joint
use sense of hearing, feeling and soap water, etc. methods to find the leaking point.
After confirming the leaking point, welding it again or tighten the nut tightly again.

Checking the leaking point

First step: 0.3MPa (3.
0kg/cm

2

g) pressurize

over 3 minutes.

Second step: 1.5Mpa
(15kg/cm

2

g) pressurize
over 3 minutes. Large
leakage will be found.

Third step: 3.0 MPa
(30kg/cm

2

g) pressurize
about 24 hours. Little
leakage will be found.

After finishing connection of refrigerant pipe, it shall perform air tightness test.
The air tightness test adopts nitrogen tank to give pressure according to the pipe connection
mode as the following figure shown.
The gas and liquid valve are all in close state. In order to prevent the nitrogen entering the
circulation system of outdoor unit, tighten the valve rod before giving pressure (both gas
and liquid valve rods).

Outdoor

Completely tightened

Completely tightened

Flare part

Outdoor units

Manhole

Discharging valve

3-way valve totally closed
(Gas side)

Low pressure peizometer

High pressure peizometer

Meter separator

Dropping valve

2-way or 3-way valve totally closed
(Liquid side)

Nitrogen tank

VL VH

Indoor units

Indoor

Flare part

9

From pressurizing to 24 hours later, each 1¡ difference of ambient temperature
will make 0.01MPa(0.1kg/cm

2

g) pressure change. It shall be corrected during test.

Check if the pressure drops

The pressure does not drop-passed
The pressure drops-check the leaking point.

5. Air discharging method

CYLINDER
OF
NITROGEN

SERVICE
HOUSE

LARGE
SLIP-ON
CONNECTOR

SWEAT
JOINT

TUBING
BRING
BRAZED

LINE
PRESSURE
GAUGE

CYLINDER
PRESSURE
GAUGE

Installation Procedure

Refrigerant piping

It shall use the vacuum pump of (lower than -755mmHg)high vacuum degree and large air

discharging (over 40l/min).
The vacuumizing time depends on the length of the connecting pipe, generally is 1~2 hours.
When vacuumizing, it shall be confirmed both gas and liquid side valves are closed.
If after 2 hours vacuumizing, it cannot reach the vacuum degree below -755mmHg, it can be
vacuumized for other 1 hour.
If after 3 hours vacuumizing, it still cannot reach the vacuum degree below -755mmHg, check
if there is any leaking point and repair the them.
If after over 2 hours vacuumizing, the vacuum degree is below -755mmHg, close the V

L
and VH on the meter separator and stop vacuumizing. 1 hour later to confirm if the vacuum
degree changes. If changes, it indicates there is leaking point in the system. Check the leaking
point and repair.
After finishing the above vacuumizing, change the vacuum pump into refrigerant pump to
charge the refrigerant.

Use vacuum pump to perform vacuumizing. It is strictly forbidden to use the
refrigerant to remove the air inside the system.
After air tightness test and discharging all the nitrogen, connect the vacuum pump
as the following figure shown.

Refrigerant piping

10

When the total length (L) of the two units' connecting pipe is less than 5m, it is
unnecessary to charge additional refrigerant.
If the connecting pipe (L) exceeds 5m, it shall charge Mg additional refrigerant per meter.
That is: Refrigerant charging amount = (L-5) x M (g)
For HBU-28CF03, HBU-28HF03, HBU-42CF03, HBU-42HF03, HDU-42CF03/H,
HDU-42CH03/H, HDU-42CI03/H, HDU-42HK03/H, HDU-42HF03/H, HDU-50HT03/H
M=65
Only in COOLING operation can charge the additional refrigerant.
When charging, the refrigerant shall be charged from the charging nozzle of low pressure vavle.
Be carefull when charging refrigerant, do not let the air mix into the system,and must charge the
additional refrigerant in liquid condition.

6. Piping and indoor unit vacuumizing

7. Charging amount of refrigerant

2-wayor 3-way valve totally closed
(Liquid side)

Indoor units

Indoor

Outdoor

Completely tightened

Completely tightened

Outdoor units

Vacuum pump

Discharging valve

3-way valve totally closed
(Gas side)

Low pressure peizometer

High pressure peizometer

Meter separator

V LVH

Flare part

Flare part

P

Installation Procedure

HBU-28CF03
HBU-28HF03

5. Electric wiring

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.)

WARNING

30mA

Item

Model

Phase

3

Switch breaker

(A)

Circuit breaker

Overcurrent protector

rated capacity (A)

Power source

wire size

(minimum)

30 20

2.5mm

2

1

40

36 4.0mm

2

Switch

breaker

Earth leakage breaker

Leak

current

30

30mA

40

11

HDU-42CF03/H

HDU-42HK03/H

Installation Procedure

Electric wiring

HBU-42HF03

HBU-42CF03

(2) Wiring connection

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

terminals.

For the detailed wiring connection with the indoor units, see the corresponding indoor

operation and instruction manual.

HDU-50HT03/H

HDU-42CH03/H
HDU-42CI03/H

Electric wiring

12

Installation Procedure

FIG.1

HBU-28HF03

W B

L N

Y/G

Y/G

POWER SUPPLY:
1PH,220-230V~,50Hz

To Indoor Unit

W B R BR GR

1 2 3 4 5

Y/G

Y/G

FIG.2

FIG.3

POWER SUPPLY:
3N~,380-400V,50Hz

N 1 2 3

Y/G

R S T

HBU-42CF03 HDU-42CF03/H HDU-50HT03/H
HDU-42CH03/H HDU-42CI03/H HDU-42HK03/H

To Indoor Unit

Y/G

To Indoor Unit

W B R BR GR

L N 3 4 5

Y/G

R S T N

Y/G

POWER SUPPLY:
3N~,380-400V,50Hz

FIG.4

To Indoor Unit

W B R W B

1 2 3 L N

HBU-28CF03

Y/G Y/G

Y/G

POWER SUPPLY:

1PH,220-230V~,50Hz

HBU-42HF03 HDU-42HF03/H¡¡

Y/G

13

Electric wiring

Installation Procedure

(1) Before starting test run (for Heat pump models)

6. Test run

Confirm whether the power source breaker (main switch) of the unit has been
turned on for over 12 hrs to energize the crankcase heater in advance of operation.

(2) Test run

Run the unit continuously for about 30 minutes, and check the following.
Suction pressure at check joint of service valve for gas pipe.
Discharge pressure at check joint on the compressor discharge pipe.
Temperature difference between return air and supply air for indoor unit.

CAUTION

THIS UNIT WILL BE STARTED INSTANTLY WITHOUT "ON" OPERATION
WHEN ELECTRIC POWER IS SUPPLIED.BE SURE TO EXECUTE "OFF"
OPERATION BEFORE ELECTRIC POWER IS DISCONNECTED FOR
SERVICING.

This unit has a function of automatic restart system after recovering power stoppage.

WARNING

DO NOT CONNECT THE NEUTRAL WIRE TO , OR PHASE.
INTERCONNECTING WIRES MUST BE WIRED ACCORDING TO FIG.1
FIG.2 FIG.3.FIG.4.INCORRECT WIRING CAUSE EQUIPMENT DAMAGE.

N R S

T

(3) Wiring procedure

1) Remove set screws on the side before taking off the front panel toward
the direction shown in figure.

2) Connect wires to the terminal block correctly and fix the wires with a
wire clamp equipped nearby the terminal block.

3) Route the wires in a proper way and penetrate the wires through the
opening for electric wiring on the side panel.