3
CAUTION
Installation
• Always check for gas (refrigerant) leakage after installation or repair of product.
- Low refrigerant levels may cause failure of product.
• Do not install the product where the noise or hot air from the outdoor unit could
damage the neighborhoods.
- It may cause a problem for your neighbors.
• Keep level even when installing the product.
- To avoid vibration or water leakage.
• Do not install the unit where combustible gas may leak.
- If the gas leaks and accumulates around the unit, an explosion may result.
• Use power cables of sufficient current carrying capacity and rating.
- Cables that are too small may leak, generate heat, and cause a fire.
• Do not use the product for special purposes, such as preserving foods, works of
art, etc. It is a consumer air conditioner, not a precision refrigeration system.
- There is risk of damage or loss of property.
• Keep the unit away from children. The heat exchanger is very sharp.
- It can cause the injury, such as cutting the finger. Also the damaged fin may re-
sult in degradation of capacity.
• When installting the unit in a hospital, communication station, or similar place,
provide sufficient protection against noise.
- The inverter equipment, private power generator, high-frequency medical
equipment, or radio communication equipment may cause the air condi-
tioner to operate erroneously, or fail to operate. On the other hand, the air
conditioner may affect such equipment by creating noise that disturbs med-
ical treatment or image broadcasting.
• Do not install the product where it is exposed to sea wind (salt spray) directly.
- It may cause corrosion on the product. Corrosion, particularly on the condenser
and evaporator fins, could cause product malfunction or inefficient operation.
Operation
• Do not use the air conditioner in special environments.
- Oil, steam, sulfuric smoke, etc. can significantly reduce the performance of the air
conditioner or damage its parts.
• Do not block the inlet or outlet.
- It may cause failure of appliance or accident.
• Make the connections securely so that the outside force of the cable may not be
applied to the terminals.
- Inadequate connection and fastening may generate heat and cause a fire.
• Be sure the installation area does not deteriorate with age.
- If the base collapses, the air conditioner could fall with it, causing property
damage, product failure, or personal injury.
• Install and insulate the drain hose to ensure that water is drained away properly
based on the installation manual.
- A bad connection may cause water leakage.
• Be very careful about product transportation.
- Only one person should not carry the product if it weighs more than 20 kg.
- Some products use PP bands for packaging. Do not use any PP bands for a means
of transportation. It is dangerous.
- Do not touch the heat exchanger fins. Doing so may cut your fingers.
- When transporting the outdoor unit, suspending it at the specified positions on
the unit base. Also support the outdoor unit at four points so that it cannot slip
sideways.
• Safely dispose of the packing materials.
- Packing materials, such as nails and other metal or wooden parts, may cause stabs
or other injuries.
- Tear apart and throw away plastic packaging bags so that children may not play with
them. If children play with a plastic bag which was not torn apart, they face the risk
of suffocation.
• Turn on the power at least 6 hours before starting operation.
- Starting operation immediately after turning on the main power switch can re-
sult in severe damage to internal parts. Keep the power switch turned on dur-
ing the operational season.
• Do not touch any of the refrigerant piping during and after operation.
- It can cause a burn or frostbite.
• Do not operate the air conditioner with the panels or guards removed.
- Rotating, hot, or high-voltage parts can cause injuries.
• Do not directly turn off the main power switch after stopping operation.
- Wait at least 5 minutes before turning off the main power switch. Otherwise it
may result in water leakage or other problems.
• Auto-addressing should be done in condition of connecting the power of all indoor and
outdoour units. Auto-addressing should also be done in case of changing the indoor
unit PCB.
• Use a firm stool or ladder when cleaning or maintaining the air conditioner.
- Be careful and avoid personal injury.
• Do not insert hands or other objects through the air inlet or outlet while the air
conditioner is plugged in.
- There are sharp and moving parts that could cause personal injury.
TABLE OF CONTENTS
2
TIPS FOR SAVING ENERGY
2
IMPORTANT SAFETY INSTRUCTIONS
4
INSTALLATION PROCESS
4
OUTDOOR UNITS INFORMATION
6
ALTERNATIVE REFRIGERANT R410A
6
SELECT THE BEST LOCATION
7
INSTALLATION SPACE
7
Individual Installation
7
LIFTING METHOD
8
INSTALLATION
8
The location of the Anchor bolts
8
Foundation for Installation
8
Preparation of Piping
10
Plumbing materials and storage methods
10
REFRIGERANT PIPING INSTALLATION
10
Precautions on Pipe connection / Valve operation
11
PIPE CONNECTIONS BETWEEN INDOOR AND
OUTDOOR UNIT
11
Preparation Work
11
Pipe Drawing Out during Single / Series connection
12
Refrigerant piping system
12
Pipe Connection Method between outdoor unit/indoor unit
15
Refrigerant charging
16
Distribution Method
16
Branch pipe Fitting
17
Leak Test and Vacuum drying
18
Vacuum Mode
19
Thermal insulation of refrigerant piping
19
ELECTRICAL WIRING
19
Caution
20
Control box and connecting position of wiring
21
Communication and Power Cables
21
Wiring of main power supply and equipment capacity
22
Point for attention regarding quality of the public electric power supply
22
Field Wiring
24
Checking the setting of outdoor units
24
Automatic Addressing
25
Group Number setting
25
Cool & Heat selector
25
Static pressure compensation mode
26
Night Low Noise Function
26
Overall defrost mode
26
Setting the ODU address
26
Snow removal & rapid defrost
27
IDU capacity adjusting
27
Target pressure adjusting
27
Comfort Operation
28
Self-Diagnosis Function
30
CAUTION FOR REFRIGERANT LEAK
30
Introduction
30
Checking procedure of limiting concentration
31
INSTALLATION GUIDE AT THE SEASIDE
!
ENGLISH
