Carrier 42QHB020N8-1, 42QHB050N8-1, 42QHB070N8-1, 42QHB090N8-1, 42QHB035N8-1 Installation Guide

SPLIT-TYPE AIR CONDITIONER

INSTALLATION MANUAL

MODEL

42QHB020N8-1/38QHB020N8-1

42QHB026N8-1/38QHB026N8-1
42QHB035N8-1/38QHB035N8-1
42QHB050N8-1/38QHB050N8-1
42QHB070N8-1/38QHB070N8-1
42QHB080N8-1/38QHB080N8-1

42QHB090N8-1/38QHB090N8-1

IMPORTANT NOTE:

Read this manual carefully before installing
or operating your new air conditioning
unit. Make sure to save this manual for
future reference.

Table of Contents

Installation Manual

0

Safety Precautions........................... 4

Accessories........................................ 6

1

2

Installation Summary - Indoor Unit........

3

Unit Parts.......................................... 10

8

4

Indoor Unit Installation........ 11

5

Outdoor Unit Installation...

1. Select installation location.................. 20

2. Install drain joint................................

3. Anchor outdoor unit..........................

4. Connect signal and power cables.......23

20

21
22

1. Select installation location.......................... 11

2. Attach mounting plate to wall....................

3. Drill wall hole for connective piping............

4. Prepare refrigerant piping...........................

5. Connect drain hose....................................

6. Connect signal cable..................................

7. Wrap piping and cables..............................

8. Mount indoor unit.....................................

12
12
14
15
17
18
18

6

Refrigerant Piping Connection........ 25

A. Note on Pipe Length................................................ 25

Connection Instructions –Refrigerant Piping............. 25

B.

1. Cut pipe..............................................................

2. Remove burrs......................................................

3. Flare pipe ends....................................................

4. Connect pipes.....................................................

Ca u t i o n: Ris k of fire

(for R32/R290 refrigerant ony )

25
26
26
27

MC MC

Air Evacuation................... 29

7

1. Evacuation Instructions......................

2. Note on Adding Refrigerant...............30

8

Electrical and Gas Leak Checks........ 31

9

Test Run............................................ 32

10

European Disposal Guidelines........ 34

11

Information servicing .................... 35

29

Safety Precautions

Read Safety Precautions Before Installation

Incorrect installation due to ignoring instructions can cause serious damage or injury.

The seriousness of potential damage or injuries is classified as either a WARNING or CAUTION.

WARNING

injury.

This symbol indicates that ignoring instructions may cause moderate injury

This symbol indicates that ignoring instructions may cause death or serious

CAUTION

to your person, or damage to your unit or other property.

This symbol indicates that you must never perform the action indicated.

WARNING

Do not modify the length of the power supply cord or use an extension cord to power the unit.
Do not

can cause fire or electrical shock.
When connecting refrigerant piping, do not
refrigerant enter the unit. The presence of other gases or substances will lower the unit’s capacity,
and can cause abnormally high pressure in the refrigeration cycle. This can cause explosion and injury.

Do not

unit at all times.

1.

Installation must be performed by an authorized dealer or specialist. Defective installation can
cause water leakage, electrical shock, or fire.
Installation must be performed according to the installation instructions. Improper installation can

2.

cause water leakage, electrical shock, or fire. (In North America,installation must be performed in
accordance with the requirement of NEC and CEC by authorized personnel only.)

Contact an authorized service technician for repair or maintenance of this unit.

3.

Only use the included accessories, parts, and specified parts for installation. Using non-standard

4.

parts can cause water leakage, electrical shock, fire, and can cause the unit to fail.

Install the unit in a firm location that can support the unit’s weight. If the chosen location cannot

5.

support the unit’s weight, or the installation is not done properly, the unit may drop and cause
serious injury and damage.

6.

Do not use means to accelerate the defrosting process or to clean, other than those
recommended by the manufacturer.

7.

The appliance shall be stored in a room without continuously operating ignition sources
(for example: open flames,an operating gas appliance or an operating electric heater)

8.

Do not pierce or burn.
Appliance shall be stored in a well -ventilated area where the room size corresponds to the

9.

room area as specifiec for operation.
Be aware that refrigerants may not contain an odour.

10.

NOTE: Clause 7 to 10 are required for the units adopt R32/R290 Refrigerant.

share the electrical outlet with other appliances. Improper or insufficient power supply

let substances or gases other than the specified

allow children to play with the air conditioner. Children must be supervised around the

 Page 4 

WARNING

For all electrical work, follow all local and national wiring standards, regulations, and the

11.

Installation Manual. You must use an independent circuit and single outlet to supply power. Do
not connect other appliances to the same outlet. Insufficient electrical capacity or defects in
electrical work can cause electrical shock or fire.

12. For all electrical work, use the specified cables. Connect cables tightly, and clamp them securely to
prevent external forces from damaging the terminal. Improper electrical connections can overheat
and cause fire, and may also cause shock.

13.

All wiring must be properly arranged to ensure that the control board cover can close properly. If
the control board cover is not closed properly, it can lead to corrosion and cause the connection
points on the terminal to heat up, catch fire, or cause electrical shock.

In certain functional environments, such as kitchens, server rooms, etc., the use of specially designed

14.
air-conditioning units is highly recommended.

15.

If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualified persons in order to avoid a hazard.

16.

This appliance can be used by children aged from 8 years and above and persons with reduced
Physical, sensory or mental capabilities or lack of experience and knowledge if they have been given
supervision or instruction concerning use of the appliance in a safe way and understand the hazards
involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be
made by children without supervision.

CAUTION

For units that have an auxiliary electric heater, do not install the unit within 1 meter (3 feet) of
any combustible materials.

Do not

gas accumulates around the unit, it may cause fire.
Do not operate your air conditioner in a wet room such as a bathroom or laundry room. Too

much exposure to water can cause electrical components to short circuit.

1. The product must be properly grounded at the time of installation, or electrical shock may occur.

2. Install drainage piping according to the instructions in this manual. Improper drainage may cause
water damage to your home and property.

3.

The appliance shall be stored so as to prevent mechanical damage from occurring.

4. Any person who is involve with working on or breaking into a refrigerant circuit should hold a

current valid certificate from an industry-accredited assessment authority, which authorizes
their competence to handle refrigerants safely in accordance with an industry recognized
assessment specification.

Note about Fluorinated Gasses

1. This air-conditioning unit contains fluorinated gasses. For specific information on the type of gas
and the amount, please refer to the relevant label on the unit itself.

regulations shall be observed.

2. Installation, service, maintenance and repair of this unit must be performed by a certified technician.

3. Product uninstallation and recycling must be performed by a certified technician.

4. If the system has a leak-detection system installed, it must be checked for leaks at least every 12 months.
When the unit is checked for leaks, proper record-keeping of all checks is strongly recommended.

install the unit in a location that may be exposed to combustible gas leaks. If combustible

Compliance with national gas

 Page 5 

Accessories

1

The air conditioning system comes with the following accessories. Use all of the installation
parts and accessories to install the air conditioner. Improper installation may result in water
leakage, electrical shock and fire, or cause the equipment to fail.

Name

Mounting plate

Clip anchor

Mounting plate fixing
screw ST3.9 X 25

Remote controller

Fixing screw for remote
controller holder ST2.9 x 10

Remote controller holder

Shape Quantity

1

5

5

1

2

Optional
Parts

Dry battery AAA.LR03

Seal

Drain joint

 Page 6 

1

2

1

(for cooling & heating

models only)

Name

Owner’s manual

Installation manual

Shape Quantity

SPLIT-TYPE ROOM AIR CONDITIONER

Owner’s Manual

Aurora Series

All Model Numbers

CS78421-548-754

IMPORTANT NOTE:

Read this manual carefully before installing
or operating your new air conditioning
unit. Make sure to save this manual for
future reference.

SPLIT-TYPE ROOM AIR CONDITIONER

Installation Manual

Aurora Series

All Model Numbers

CS78421-548-754

IMPORTANT NOTE:

Read this manual carefully before installing
or operating your new air conditioning
unit. Make sure to save this manual for
future reference.

1

1

Remote controller
illustration

Magnetic ring and belt

(if supplied and packed with the
accessories, please refer to the
wiring diagram to install it on the
connective cable. )

Connecting pipe
assembly

AIR CONDITIO NER

REMOTE CONT ROL LER ILLUS TRATIO N

IMPORTANT NOTE:

Read this manual carefully before installing
or operating your new air conditioning
unit. Make sure to save this manual for
future reference.

1 2 3

Liquid side

Gas side

Pass the belt through
the hole of the Magnetic
ring to fix it on the cable

6.35( 1/4 i n)

Φ

9.52( 3/8in )

Φ

Φ

Φ

Φ

9.52( 3/8in )

12.7( 1/2in )

16( 5/ 8in)

1

N*

* means that according to the
actual quantity.

Parts you must purc hase.
Consult the dealer about
the pipe size.

19( 3/4in)

Φ

WARNING

Appliance shall be stored in a well -ventilated area where the room size corresponds to the
room area as specifiec for operation.
For R32 frigerant models:
Appliance shall be installed, operated and stored in a room with a floor area larger than 4m .
Appliance shall not be installed in an unvertilated space, if that space is smaller than 4m .

For R290 refrigerant models, the minimum room size needed:
<=9000Btu/h units: 13m
>9000Btu/h and <=12000Btu/h units: 17m
>12000Btu/h and <=18000Btu/h units: 26m
>18000Btu/h and <=24000Btu/h units: 35m

2

2

2

2

 Page 7 

2

2

Installation

Overview

Installation Summary - Indoor Unit

1 2

12cm
(4.75in)

2.3m (90.55in)

15cm (5.9in)

12cm
(4.75in)

2

Select Installation Location

(Page 11)

3 4

Determine Wall Hole Position

(Page 12)

Attach Mounting Plate

 Page 8 

(Page 12)

Drill Wall Hole

(Page 12)

5 6 7

Installation

Overview

8

Connect Piping

(Page 25)

Connect Wiring

(Page 17)

Wrap Piping and Cable
(not applicable for some locations in the US )

(Page 18)

Prepare Drain Hose

(Page 14)

9

8

STEP

Mount Indoor Unit

(Page 18)

 Page 9 

Installation

Overview

Unit Parts

3

NOTE: The installation must be performed in accordance with the requirement of local and
national standards. The installation may be slightly different in different areas.

1

2

4

5

3

2

6

7

8

4

5

9

11

10

1

Air-break switch

3

6

7

8

11

（1） （2）

Fig. 3.1

Wall Mounting Plate

1

2

Front Panel

Power Cable (Some Units)

3

Louver

4

Functional Filter (On Front of

5

Main Filter - Some Units)

6

Drainage Pipe

7

Signal Cable

8

Refrigerant Piping

Remote Controller

9

Remote controller Holder

10

(Some Units)

Outdoor Unit Power Cable

11

(Some Units)

NOTE ON ILLUSTRATIONS

Illustrations in this manual are for explanatory purposes. The actual shape of your indoor
unit may be slightly different. The actual shape shall prevail.

 Page 10 

Indoor Unit Installation

Fig. 3.1-a

4

Indoor Unit

Installation

Installation Instructions – Indoor
Unit

PRIOR TO INSTALLATION

Before installing the indoor unit, refer to the
label on the product box to make sure that the
model number of the indoor unit matches the
model number of the outdoor unit.

Step 1: Select installation location

Before installing the indoor unit, you must
choose an appropriate location. The following
are standards that will help you choose an
appropriate location for the unit.

Proper installation locations meet the
following standards:

Good air circulation



Convenient drainage





Noise from the unit will not disturb other
people

Firm and solid—the location will not vibrate





Strong enough to support the weight of the
unit

DO NOT

locations:

NOTE ABOUT WALL HOLE:

If there is no fixed refrigerant piping:
While choosing a location, be aware that you

should leave ample room for a wall hole (see
Drill wall hole for connective piping step)
for the signal cable and refrigerant piping
that connect the indoor and outdoor units.
The default position for all piping is the right
side of the indoor unit (while facing the unit).
However, the unit can accommodate piping to
both the left and right.

install unit in the following

Near any source of heat, steam, or
combustible gas

Near flammable items such as curtains or
clothing

Near any obstacle that might block air
circulation

Near the doorway
In a location subject to direct sunlight



A location at least one meter from all other
electrical devices (e.g., TV, radio, computer)

 Page 11 

Refer to the following diagram to ensure proper distance from walls and ceiling:

15cm (5.9in) or more

Indoor Unit

Installation

Step 2: Attach mounting plate to wall

The mounting plate is the device on which you
will mount the indoor unit.

1.

2.

3.

4. Secure the mounting plate to the wall with

5.

NOTE FOR CONCRETE OR BRICK WALLS:

12cm (4.75in)

or more

2.3m (90.55in) or more

Fig. 3.1-b

Remove the screw that attaches the mounting
plate to the back of the indoor unit.

Place the mounting plate against the wall
in a location that meets the standards in
the Select Installation Location step. (See
Mounting Plate Dimensions for detailed
information on mounting plate sizes.)

Drill holes for mounting screws in places that:

• have studs and can support the weight of
the unit

• correspond to screw holes in the mounting
plate

the screws provided.
Make sure that mounting plate is flat against

the wall.

12cm (4.75in)

or more

Step 3: Drill wall hole for connective piping

You must drill a hole in the wall for refrigerant
piping, the drainage pipe, and the signal cable
that will connect the indoor and outdoor units.

1.

Determine the location of the wall hole based
on the position of the mounting plate. Refer
to Mounting Plate Dimensions on the
next page to help you determine the optimal
position. The wall hole should have a 65mm

(2.5in) diameter at least, and at a slightly
lower angle to facilitate drainage.

2. Using a 65mm (2.5in) or 90mm(3.54in)
(depending on models )core drill, drill a
hole in the wall. Make sure that the hole
is drilled at
that the outdoor end of the hole is lower

a slight downward angle, so

than the indoor end by about 5mm to 7mm
(0.2-0.275in). This will ensure proper water
drainage. (See Fig. 3.2)

3. Place the protective wall cuff in the hole. This
protects the edges of the hole and will help
seal it when you finish the installation process.

If the wall is made of brick, concrete, or similar
material, drill 5mm-diameter (0.2in-diameter)
holes in the wall and insert the sleeve anchors
provided. Then secure the mounting plate to
the wall by tightening the screws directly into
the clip anchors.

 Page 12 

CAUTION

When drilling the wall hole, make sure to
avoid wires, plumbing, and other sensitive
components.