website http://www.lgservice.com
LG
LG Room
Air Conditioner
SERVICE MANUAL
MODELS: AS-W096URH0/UBH0/UWH0/UMH0
AS-W126URH0/UBH0/UWH0/UMH0/UCH0
AS-W096URH1/UBH1/UWH1/UMH1
AS-W126URH1/UBH1/UWH1/UMH1
CAUTION
•BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
•ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Air Conditioner Service Manual |
|
TABLE OF CONTENTS |
|
LG Model Name ............................................................................................................................................... |
3 |
Safety Precautions.......................................................................................................................................... |
5 |
Dimensions ................................................................................................................................................... |
10 |
Symbols Used in this Manual................................................................................................................... |
10 |
Indoor Unit................................................................................................................................................ |
10 |
Outdoor Unit............................................................................................................................................. |
11 |
Product Specifications ................................................................................................................................ |
12 |
Installation ..................................................................................................................................................... |
13 |
Select the Best Location ......................................................................................................................... |
13 |
Piping Length and Elevation..................................................................................................................... |
14 |
Fixing Installation Plate ............................................................................................................................ |
14 |
Drill a Hole in the Wall .............................................................................................................................. |
15 |
Flaring Work............................................................................................................................................. |
15 |
Connection of Piping ............................................................................................................................... |
16 |
Connecting the Cables ............................................................................................................................. |
22 |
Checking the Drainage............................................................................................................................. |
24 |
Forming the Piping ................................................................................................................................... |
25 |
Air Purging ............................................................................................................................................... |
26 |
Test Running ............................................................................................................................................ |
28 |
Functions ...................................................................................................................................................... |
30 |
Operation ...................................................................................................................................................... |
33 |
Disassembly .................................................................................................................................................. |
47 |
Indoor Unit................................................................................................................................................ |
47 |
Schematic Diagram....................................................................................................................................... |
50 |
Electric Control device.............................................................................................................................. |
50 |
Wiring Diagram......................................................................................................................................... |
52 |
Components Location .............................................................................................................................. |
54 |
Troubleshooting Guide ................................................................................................................................. |
57 |
Refrigeration Cycle Diagram .................................................................................................................... |
57 |
Pipe Length and the Elevation ................................................................................................................. |
58 |
2-way, 3-way Valve ................................................................................................................................... |
59 |
Cycle Parts............................................................................................................................................... |
66 |
Self-diagnosis Function............................................................................................................................ |
67 |
Electronic Parts ........................................................................................................................................ |
69 |
Exploded View .............................................................................................................................................. |
80 |
Indoor Unit................................................................................................................................................ |
80 |
Outdoor Unit............................................................................................................................................. |
81 |
Replacement Parts List ................................................................................................................................ |
82 |
Indoor ....................................................................................................................................................... |
82 |
Outdoor .................................................................................................................................................... |
84 |
2 Room Air Conditioner
LG Model Name
2002
|
1 |
|
2 |
|
- |
|
3 |
|
4 |
|
5 |
|
6 |
|
7 |
|
|
8 |
|
|
|
9 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
Code |
|
Type |
|
Code of Model |
|
|
|
Meaning |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||
1,2 |
|
Type of Airconditioner |
|
A~Z |
|
|
|
LS: LG Split Type Airconditioner |
|
|
|
|
|
|
|
|
|
|
|
|||||||||||||||||||
3 |
|
|
|
Chassis |
|
|
A~Z |
|
|
|
Name of toll of Unit |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Ex. LS-R S R Chassis |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
4,5 |
|
|
Capacity(Btu/h) |
|
1~9 |
|
|
|
Cooling/Heating Capacity |
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Ex. "09" 9,000Btu/h |
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||||||
6 |
|
|
Electric Range |
|
1~9 |
|
|
|
Electric Standard |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
1 115V/60Hz |
|
|
|
6 220~240V/50Hz |
|
|
|
|
|
|
||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2 220V/60Hz |
|
|
|
7 110V, 50/60Hz |
|
|
|
|
|
|
|
|||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
3 208~230V/60Hz |
|
8 380~415V/50Hz |
|
|
|
|
|
|
||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
5 200~220V/50Hz |
|
9 380~415V/60Hz |
|
|
|
|
|
|
||||||||||||||||
7 |
|
|
|
Serial No. |
|
0~9 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||||||
|
|
|
|
|
|
|
Basic |
|
|
|
|
|
|
|
|
|
|
|
|
A |
|
|
0 |
|
|
|||||||||||||
|
|
|
|
|
|
|
|
|
A~Z |
|
|
|
Plasma Filter |
|
|
|
|
|
|
|
|
|
|
|
|
B |
|
|
1 |
|
|
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Plasma Filter |
|
|
|
|
|
|
C |
|
|
2 |
|
|
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Telephone + LED Display |
|
|
|
|
|
|
D |
|
|
3 |
|
|
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Telephone + LCD Display |
|
|
|
|
|
|
E |
|
|
4 |
|
|
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Plasma Filter + Telephone + LCD |
|
|
F |
|
|
5 |
|
|
||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Low Ambient + Ambient/change |
|
|
|
G |
|
|
6 |
|
|
|||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Plasma Filter + Low Ambient + Ambient/change |
|
H |
|
|
7 |
|
|
|||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Internet |
|
|
|
|
|
|
|
|
|
|
|
|
J |
|
|
8 |
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Plasma Filter + Oxygen Generator |
|
K |
|
|
9 |
|
|
|||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Soft Start |
|
|
|
|
|
|
L |
|
|
Z |
|
|||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Star Rating |
|
|
|
|
|
|
M |
|
|
Y |
|
|||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Star Rating + Plasma Filter |
|
N |
|
|
X |
|
||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Soft Start + Star Rating |
|
|
P |
|
|
W |
|
|||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Soft Start + Star Rating 4 + Plasma |
|
Q |
|
|
V |
|
||||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Telephone + LCD |
|
|
|
|
R |
|
|
U |
|
|||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Auto Swing + Telephone + LCD + Soft Start |
|
S |
|
|
T |
|
||||||||||||||||||
8 |
|
|
Cooling/Heating |
|
|
A~Z |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||
|
|
|
|
|
|
|
|
UNIT |
|
|
|
|
|
R22 |
|
|
HFC |
R22+AC INV. |
HFC+AC |
HFC+DC |
|
|||||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
INV. |
|
INV. |
|
||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
INDOOR |
|
OUTDOOR |
|
C/O |
|
H/P |
|
E/H+C/O |
E/H+H/P |
|
C/O |
H/P |
C/O |
H/P |
|
H/P |
|
H/P |
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
BASIC |
|
BASIC |
|
|
C |
|
H |
|
X |
Y |
|
F |
R |
|
V |
N |
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
BASIC |
|
GOLD FIN |
|
|
A |
|
B |
|
5 |
6 |
|
M |
P |
W |
Y |
|
T |
|
U |
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PLASMA |
|
GOLD FIN |
|
|
D |
|
E |
|
7 |
8 |
|
Q |
S |
1 |
2 |
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
PLASMA |
|
BASIC |
|
|
G |
|
J |
|
- |
- |
|
- |
- |
3 |
4 |
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
GOLD FIN |
|
GOLD FIN |
|
|
K |
|
L |
|
- |
- |
|
- |
- |
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||
9 |
|
|
LG/OEM Brand |
|
|
A~Z |
|
|
|
L: LG Brand |
|
|
|
|
|
M: 1st OEM Brand |
|
|
|
|
|
|
|
|||||||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
G: 2nd LG Brand |
|
|
|
N: 2nd OEM Brand |
|
|
|
|
|
|
|
Service Manual 3
2003~2005
|
1 |
|
2 |
|
- |
|
3 |
4 |
5 |
6 |
7 |
|
8 |
|
9 |
10 |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||
Code |
|
Type |
|
Code of Model |
|
|
|
Meaning |
|
|
|
|
|
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
||||||||
1 |
|
|
Producing Center, |
|
A~Z |
|
|
L: Chang-won R22 |
|
N: India |
|
|
||||||||||
|
|
|
|
Refrigerant |
|
|
|
|
|
A: Chang-won R410A |
|
Z: Brazil |
|
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
C: Chang-won R407C |
|
D: Indonesia |
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
T: China |
|
|
|
M: Mexico |
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
K: Turkey R22 |
|
|
|
V: Vietnam |
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
E: Turkey R410A |
|
|
S: Out Sourcing |
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
H: Thailand |
|
|
|
|
|
|
|
|||
2 |
|
|
Product Type |
|
A~Z |
|
|
S: Split Type Air Conditioner |
|
|
||||||||||||
3 |
|
Cooling/Heating/Inverter |
A~Z |
|
|
C: Cooling only |
|
|
V: AC Inverter C/O |
|
|
|||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
H: Heat pump |
|
|
|
N: AC Inverter H/P |
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
X: C/O + E/Heater |
|
|
Q: DC Inverter C/O |
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
Z: H/P + E/Heater |
|
|
W: DC Inverter H/P |
|
|
|||||
4, 5 |
|
|
|
Capacity |
|
|
0~9 |
|
|
Cooling/Heating Capacity |
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Ex. "09" → 9,000 Btu/h |
|
|
|
|
|
|||||
6 |
|
|
Electric Range |
|
1~9 |
|
|
1: 115V/60Hz, |
|
|
A: 220V, 50Hz, 3Phase |
|
|
|||||||||
|
|
|
|
|
|
|
|
|
A~Z |
|
|
2: 220V/60Hz |
|
|
B: 208~230V, 60Hz, 3Phase |
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
3: 208-230V/60Hz |
|
C: 575V, 50Hz, 3Phase |
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
5: 200-220V/50Hz |
|
D: 440~460, 60Hz, 3Phase |
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
6: 220-240V/50Hz |
|
E: 265V, 60Hz |
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
7: 110V, 50/60Hz |
|
F: 200V, 50/60Hz |
|
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
8: 380-415V/50Hz |
|
|
|
|
|
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
9: 380-415V/60Hz |
|
|
|
|
|
|
||||
7 |
|
|
|
Chassis |
|
|
A~Z |
|
|
Name of Chassis of Unit |
|
|
|
|
|
|||||||
|
|
|
|
|
|
|
|
|
|
|
|
Ex. LSP → SP Chassis |
|
|
|
|
|
|||||
8 |
|
|
|
|
Look |
|
|
A~Z |
|
|
Look, |
|
|
|
|
|
|
|
|
|
||
|
|
|
|
|
|
|
|
|
|
|
|
Color (Artcool Model) |
|
|
|
|
|
|||||
9 |
|
|
|
Function |
|
|
A~Z |
|
|
|
|
|
|
|
|
|
|
|
|
|||
|
|
|
|
|
|
|
Basic |
|
|
|
|
|
|
|
A |
|
||||||
|
|
|
|
|
|
|
|
|
|
|
|
Basic+4Way |
|
|
|
|
|
B |
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
Plasma Filter |
|
|
|
|
|
C |
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
Plasma Filter+4 Way |
|
|
|
D |
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
Tele+LCD |
|
|
|
|
|
E |
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
Tele+LCD+Nano plasma+4Way |
F |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Nano Plasma F+(A/changeove)+A/clean+Low A |
G |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Nano Plasma F+(A/changeove)+A/clean+4way+Low A |
H |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Tele+LED+4way |
|
|
|
|
I |
|
||||
|
|
|
|
|
|
|
|
|
|
|
|
Internet |
|
|
|
|
|
J |
|
|||
|
|
|
|
|
|
|
|
|
|
|
|
Plasma F+4Way+Oxy generator |
K |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Nano Plasma F+(A/changeove)+A/clean |
L |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Nano Plasma F+(A/changeove)+A/clean+4way |
M |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Nano Plasma F+(A/changeove)+A/clean+PTC |
N |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Nano Plasma F+(A/changeove)+Autoclean+4way+PTC |
P |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Nano Plasma F+(A/changeove)+A/clean+4way+Low A+PTC |
Q |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Negative ION+A/Clean |
|
|
|
R |
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
(Nano)Plasma+Negative ION+A/Clean |
S |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean |
T |
|
||||||||
|
|
|
|
|
|
|
|
|
|
|
|
Nano Plasma F+4Way+(A/changeove)+A/clean+ |
U |
|
||||||||
10 |
|
|
|
Serial No. |
|
|
1~9 |
|
|
LG Model Development Serial No. |
|
|
||||||||||
|
|
|
|
|
|
|
|
|
|
|
|
* ARTCOOL COLOR |
|
|
|
|
|
|||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
R |
|
|
|
Mirror |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
W |
|
|
|
White |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
B |
|
|
|
Blue |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
D |
|
|
|
Wood |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
M |
|
|
|
Metal |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
C |
|
|
|
Cherry |
|
|
|
|
|
4 Room Air Conditioner
Safety Precautions
Safety Precautions
To prevent injury to the user or other people and property damage, the following instructions must be followed.
■Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.
This symbol indicates the possibility of death or serious injury.
This symbol indicates the possibility of injury or damage to properties only.
■ Meanings of symbols used in this manual are as shown below.
Be sure not to do.
Be sure to follow the instruction.
■ Installation
Do not use damaged power cords, plugs, or a loose socket.
• There is risk of fire of electric shock.
Always use the power plug and socket with the ground terminal.
• There is risk of electric shock.
Install the panel and the cover of control box securely.
• There is risk of fire of electric shock.
.Do not modify or extend the power cord.
• No grounding may cause electric shock.
Service Manual 5
Safety Precautions
For re-installation of the installed product, always contact a dealer or an authorized service center.
•There is risk of fire, electric shock, explosion, or injury.
ful of the case edges and the fins on the condenser and evaporator.
Do not install, remove, or re-install the unit by yourself.
•There is risk of fire, electric shock, explosion, or injury.
For installation, always contact the dealer or an Authorized service center
• There is risk of fire, electric shock, explosion, or injury.
Do not install the product on a defective installation stand.
Be sure the installation area does not deteriorate with age.
•It may cause injury, accident, or damage to the product.
•If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and personal injury.
6 Room Air Conditioner
Safety Precautions
■ Operation
Do not turn the air-conditioner ON or OFF by plugging or unplugging the power plug.
• There is risk of fire or electrical shock.
Grasp the plug to remove the cord from the outlet. Do not touch it with wet hands.
• There is risk of fire or electrical shock.
Do not allow water to run into electrical parts.
Use a dedicated outlet for this appliance.
• There is risk of fire or electrical shock.
Do not place a heater or other appliances near the power cable.
• There is risk of fire and electric shock.
Do not store or use flammable gas or combustibles near the air conditioner.
• There is risk of fire, failure of the product, or electric • There is risk of fire or failure of product. shock.
Service Manual 7
Unplug the unit if strange sounds, odors, or smoke comes from it.
• There is risk of electric shock or fire.
Be cautious that water could not enter the product.
•There is risk of fire, electric shock, or product damage.
Always check for gas (refrigerant) leakage after installation or repair of product.
Install the drain hose to ensure that water is drained away properly.
• Low refrigerant levels may cause failure of product. |
• A bad connection may cause water leakage. |
||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Keep level even when installing the product.
• To avoid vibration or water leakage.
Use two or more people to lift and transport the air conditioner.
• Avoid personal injury.
90˚
8 Room Air Conditioner
■ Operation
Use a soft cloth to clean. Do not use harsh detergents, solvents, etc.
Do not touch the metal parts of the product when removing the air filter. They are very sharp!
• There is risk of fire, electric shock, or damage to the • There is risk of personal injury.
Wax
Do not step on or put anyting on the product. (outdoor units)
Do not insert hands or other objects through the air inlet or outlet while the air conditioner is plugged in.
• There is risk of personal injury and failure of product. |
• There are sharp and moving parts that could cause |
|
personal injury. |
Service Manual 9
Dimensions
Dimensions
SymbolsUsedin this Manual
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the air conditioner.
NOTICE |
This symbol indicates special notes. |
IndoorUnit
H
D
W
Installation plate
|
MODEL |
9k, 12k Btu Series |
|
DIM |
Unit |
||
|
|||
W |
mm |
1030 |
|
H |
mm |
290 |
|
D |
mm |
153 |
|
|
|
|
|
|
|
|
10 Room Air Conditioner
Dimensions
Outdoor Unit
|
W |
L2 |
L1 |
D |
|
|
L3 |
|
H
L4
Gas side (3-way valve)
L5
Liquid side (2-way valve)
|
MODEL |
9k, 12k Btu Series |
|
DIM |
unit |
||
|
|||
W |
mm |
770 |
|
H |
mm |
540 |
|
D |
mm |
245 |
|
L1 |
mm |
287 |
|
L2 |
mm |
64 |
|
L3 |
mm |
518 |
|
L4 |
mm |
10 |
|
L5 |
mm |
100 |
|
|
|
|
Service Manual 11
Product Specifications
Product Specifications
Table-1 |
|
|
|
|
|
|
|
|
Model Name |
AS-W096U_0 |
AS-W126U_0 |
AS-W096U_1 |
AS-W126U_1 |
Item |
|
Unit |
||||
|
|
|
|
|
||
|
|
W |
645 |
820 |
645 |
820 |
|
MIN |
kcal/h.(W) |
554 |
706 |
554 |
706 |
|
|
Btu/h. |
2,200 |
2,800 |
2,200 |
2,800 |
|
|
W |
2,637 |
3,516 |
2,637 |
3,516 |
Cooling Capacity |
Type |
kcal/h.(W) |
2,268 |
3,024 |
2,268 |
3,024 |
|
|
Btu/h. |
9,000 |
12,000 |
9,000 |
12,000 |
|
|
W |
3,246 |
3,868 |
3,246 |
3,868 |
|
Max |
kcal/h.(W) |
2,792 |
3,326 |
2,792 |
3,326 |
|
|
Btu/h. |
11,080 |
13,200 |
11,080 |
13,200 |
|
|
W |
527 |
1,289 |
527 |
1,289 |
|
MIN |
kcal/h.(W) |
454 |
1,109 |
454 |
1,109 |
|
|
Btu/h. |
1,800 |
4,400 |
1,800 |
4,400 |
|
|
W |
3,164 |
3,956 |
3,164 |
3,956 |
Heating Capacity |
Type |
kcal/h.(W) |
2,722 |
3,402 |
2,722 |
3,402 |
|
|
Btu/h. |
10,800 |
13,500 |
10,800 |
13,500 |
|
|
W |
4,087 |
4,351 |
4,087 |
4,351 |
|
Max |
kcal/h.(W) |
3,515 |
3,742 |
3,515 |
3,742 |
|
|
Btu/h. |
13,950 |
14,850 |
13,950 |
14,850 |
Power Input |
Cooling |
W |
750 |
1,098 |
750 |
1,090 |
|
Heating |
W |
875 |
1,410 |
875 |
1,410 |
Running Current |
Cooling |
A |
3.9 |
5.0 |
3.5 |
5.0 |
|
Heating |
A |
4.5 |
6.2 |
4.0 |
6.2 |
Starting Current |
Cooling |
A |
3.9 |
5.0 |
3.5 |
5.0 |
|
Heating |
A |
4.5 |
6.2 |
4.0 |
6.2 |
|
Cooling |
kcal/hW |
3.0 |
2.8 |
3.0 |
2.8 |
EER |
|
Btu/h.W |
12.00 |
10.93 |
12.00 |
10.93 |
|
Heating |
kcal/hW |
3.11 |
2.41 |
3.11 |
2.41 |
|
|
Btu/h.W |
12.34 |
9.57 |
12.34 |
9.57 |
COP |
Cooling |
W/W |
3.52 |
3.20 |
3.52 |
3.20 |
|
Heating |
W/W |
3.62 |
2.81 |
3.62 |
2.81 |
Power Supply |
|
Ø,V,Hz |
1,220-240,50 |
1,220-240,50 |
1,220-240,50 |
1,220-240,50 |
Power Factor |
|
% |
97 |
97 |
97 |
97 |
Air Circulation |
Indoor,Max |
m3/min(CFM) |
9.0(318) |
9.5(335) |
9.0(318) |
9.5(335) |
|
Outdoor,Max |
m3/min(CFM) |
26(918) |
26(918) |
26(918) |
26(918) |
Moisture Removal |
|
l/h.(pts/h.) |
1.5(3.2) |
1.5(3.2) |
1.5(3.2) |
1.5(3.2) |
Noise Level |
Indoor,High |
dB(A)±3 |
34 |
35 |
34 |
35 |
(Sound |
Med. |
dB(A)±3 |
32 |
33 |
32 |
33 |
Pressure,1m) |
Low |
dB(A)±3 |
28 |
28 |
28 |
28 |
|
Outdoor,Max |
dB(A)±3 |
48 |
48 |
48 |
48 |
Refrigerant(R410A)Charge |
|
770(27.1) |
820(28.9) |
720(25.3) |
810(28.5) |
|
Power Cord |
|
AWG#:P*mm2 |
16:3*1.0 |
16:3*1.5 |
16:3*1.5 |
16:3*1.5 |
Connecting Cable |
|
AWG#:P*mm2 |
16:4*1.0 |
16:4*1.5 |
16:4*1.0 |
16:4*1.5 |
Connecting Tube |
Liquid Side |
mm(in) |
6.35(1/4) |
6.35(1/4) |
6.35(1/4) |
6.35(1/4) |
(Ø. Socket Flare) |
Gas Side |
mm(in) |
9.52(3/8) |
12.7(1/2) |
9.52(3/8) |
12.7(1/2) |
|
Length,std |
m(in) |
7.5(295) |
7.5(295) |
7.5(295) |
7.5(295) |
Drain Hose |
(O.D , I.D) |
mm(in) |
21.5,16.0(0.85,0.63) |
21.5,16.0(0.85,0.63) |
21.5,16.0(0.85,0.63) |
21.5,16.0(0.85,0.63) |
|
Indoor |
mm |
1030*290*153 |
1030*290*153 |
1030*290*153 |
1030*290*153 |
Dimension |
|
inch |
40.6*11.4*6.1 |
40.6*11.4*6.1 |
40.6*11.4*6.1 |
40.6*11.4*6.1 |
(W*H*D) |
Outdoor |
mm |
770*540*245 |
770*540*245 |
770*540*245 |
770*540*245 |
|
|
inch |
30.3*21.3*9.6 |
30.3*21.3*9.6 |
30.3*21.3*9.6 |
30.3*21.3*9.6 |
Net Weight |
Indoor |
kg(lbs) |
9.5(20.9) |
9.5(20.9) |
9.5(20.9) |
9.5(20.9) |
|
Outdoor |
kg(lbs) |
37(81.4) |
38(83.8) |
37(81.4) |
38(83.8) |
12 Room Air Conditioner
Installation
Installation
Selectthe bestLocation
Indoor unit
1.Do not have any heat or steam near the unit.
2.Select a place where there are no obstacles in front of the unit.
3.Make sure that condensation drainage can be conveniently routed away.
4.Do not install near a doorway.
5.Ensure that the interval between a wall and the left (or right) of the unit is more than 50cm. The unit should be installed as high as possible on the wall, allowing a minimum of 10cm from ceiling.
6.Use a stud finder to locate studs to prevent unnecessary damage to the wall.
More than |
|
5cm |
More than 10cm |
More than 5cm
More than
CAUTION: Install the indoor unit on the wall where the height from the floor is more than 2 meters.
Outdoor unit
1.If an awning is built over the unit to prevent direct sunlight or rain exposure, make sure that heat radiation from the condenser is not restricted.
2.Ensure that the space around the back and sides is more than 10cm. The front of the unit should have more than 70cm of space.
3.Do not place animals and plants in the path of the warm air.
4.Take the weight of the air conditioner into account and select a place where noise and vibration are minimum.
5.Select a place where the warm air and noise from the air conditioner do not disturb neighbors.
More than 60cm
More than 10cm |
More than 10cm |
More than 70cm |
More |
|
than 60cm |
||
|
Service Manual 13
Installation
PipingLengthandElevation
Capacity |
|
Pipe Size |
Standard |
Max. |
Max. |
Additional |
|
(Btu/h) |
GAS |
|
LIQUID |
Length (m) |
Elevation B (m) |
Length A (m) |
Refrigerant (g/m) |
|
|
|
|
|
|
|
|
9k |
3/8" |
|
1/4" |
4 or 5 |
7 |
15 |
20 |
|
|
|
|
|
|
|
|
12k |
1/2" |
|
1/4" |
4 or 5 |
7 |
15 |
20 |
|
|
|
|
|
|
|
|
Indoor unit
Outdoor unit
Outdoor unit
|
|
A |
Oil trap |
|
|
|
|
Outdoor unit |
Indoor unit |
B |
Indoor |
|
|
B
If piping length is more than 5m
CAUTION: Capacity is based on standard length and maximum allowance length is on the basis of reliability.
Oil trap should be installed every 5~7 meters.
FixingInstallationPlate
The wall you select should be strong and solid enough to prevent vibration
1.Mount the installation plate on the wall with
type "A" screws. If mounting the unit on a concrete
wall, use anchor bolts.
•Mount the installation plate horizontally by aligning the centerline using a level.
Installation Plate
Type "A" screw
2.Measure the wall and mark the centerline. It is also important to use caution concerning the location of the installation plate-routing of the wiring to power outlets is through the walls typically. Drilling the hole through the wall for piping connections must be done safely.
CHASSIS |
|
Distance (mm) |
|
||
(Grade) |
|
|
|
|
|
A |
B |
C |
D |
||
|
|||||
|
|
|
|
|
|
SU |
92 |
44 |
67 |
44 |
|
(9k~12k) |
|||||
|
|
|
|
||
|
|
|
|
|
(SU) |
|
|
C |
Installation plate |
|
D |
||
B |
||
Ø70mm |
A |
|
Ø70mm |
||
Left rear piping |
Right rear piping |
14 Room Air Conditioner
Installation
DrillaHolein theWall
•Drill the piping hole with a ø 70mm hole core drill. Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side.
|
WALL |
Indoor |
Outdoor |
|
|
|
|
|
|
|
5-7mm |
(3/16"~5/16") |
|
|
|
Flaring Work
Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure.
Cut the pipes and the cable.
1.Use the piping kit accessory or the pipes purchased locally.
2.Measure the distance between the indoor and the outdoor unit.
3.Cut the pipes a little longer than measured distance.
4.Cut the cable 1.5m longer than the pipe length.
Burrs removal
1.Completely remove all burrs from the cut cross section of pipe/tube.
2.Put the end of the copper tube/pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing.
Putting nut on
•Remove flare nuts attached to indoor and outdoor unit, then put them on pipe/tube having completed burr removal.
(not possible to put them on after flaring work)
Flaring work
1.Firmly hold copper pipe in a die in the dimension shown in the table below.
2.Carry out flaring work with the flaring tool.
Outside diameter |
A |
|
|
|
|
mm |
inch |
mm |
Ø6.35 |
1/4 |
0~0.5 |
Ø9.52 |
3/8 |
0~0.5 |
Ø12.7 |
1/2 |
0~0.5 |
Ø15.88 |
5/8 |
0~1.0 |
Ø19.05 |
3/4 |
1.0~1.3 |
Copper |
|
Slanted Uneven Rough |
pipe |
90° |
Pipe
Reamer
Point down
Flare nut
Copper tube
|
"A" |
Handle |
|
Bar |
Bar |
||
|
|||
|
|
Yoke |
|
|
|
Cone |
Copper pipe
Clamp handle
Red arrow mark
Service Manual 15
Installation
Check
1.Compare the flared work with the figure by.
2.If a flared section is defective, cut it off and do flaring work again.
Smooth all round
Inside is shiny without scratches
= Improper flaring =
Inclined Surface Cracked Uneven
damaged thickness
Even length all round
ConnectingthePiping
Indoor
1.Prepare the indoor unit's piping and drain hose for installation through the wall.
2.Remove the plastic tubing retainer(see the illustration
by) and pull the tubing and drain hose away from chassis.
3. Replace the plastic tubing holder in the original position.(Optional)
For right rear piping
1.Route the indoor tubing and the drain hose in the direction of rear right.
2.Insert the connecting cable into the indoor unit from the outdoor unit through the piping hole.
•Do not connect the cable to the indoor unit.
•Make a small loop with the cable for easy connection later.
3.Tape the tubing, drain hose, and the connecting cable. Be sure that the drain hose is located at the lowest side of the bundle. Locating at the uper side can cause drain pan to overflow inside the unit.
CAUTION: If the drain hose is routed inside the room, insulate the hose with an insulation material* so that dripping from "sweating"(condensation) will not damage furniture or floors.
*Foamed polyethylene or equivalent is recommended.
Drain hose
Tape
Connecting pipe
Drain hose
Connecting cable
16 Room Air Conditioner
Installation
4.Indoor unit installation
Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate.) Ensure that the hooks are properly seated on the installation plate by moving it left and right.
Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound).
Connecting the piping to the indoor unit and drain hose to drain pipe.
1.Align the center of the pipes and sufficiently tighten the flare nut by hand.
2.Tighten the flare nut with a wrench.
Outside diameter |
Torque |
|
|
|
|
mm |
inch |
kg.m |
Ø6.35 |
1/4 |
1.8 |
Ø9.52 |
3/8 |
4.2 |
Ø12.7 |
1/2 |
5.5 |
3.When extending the drain hose at the indoor unit, install the drain pipe.
Connecting
cable
Drain hose
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Indoor unit tubing |
Flare nut Pipes |
||||||||
|
|
|
|
|
|
|
|
|
|
Open-end wrench (fixed)
Flare nut
Wrench |
Connection pipe |
Indoor unit tubing
Drain pipe
Indoor unit drain hose
Adhesive Vinyl tape(narrow)
Wrap the insulation material around the connecting portion.
1.Overlap the connection pipe insulation material and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there may be no gap.
2.Wrap the area which accommodates the rear piping housing section with vinyl tape.
3.Bundle the piping and drain hose together by wrapping them with vinyl tape for enough to cover where they fit into the rear piping housing section.
Plastic bands Insulation material
Connection pipe |
Indoor unit pipe |
Vinyl tape (wide) |
Wrap with vinyl tape |
Connecting cable
Pipe
Vinyl tape(narrow)
Wrap with vinyl tape
Pipe
Vinyl tape(wide)
Drain hose
Service Manual 17
Installation
For left rear piping
1.Route the indoor tubing and the drain hose to the required piping hole position.
2.Insert the piping, drain hose, and the connecting cable into the piping hole.
3.Insert the connecting cable into the indoor unit.
•Don't connect the cable to the indoor unit.
•Make a small loop with the cable for easy connection later.
4.Tape the drain hose and the connecting cables.
1 |
2 |
|
Connecting |
|
cable |
|
Drain pipe |
5.Indoor unit installation
•Hang the indoor unit from the hooks at the top of the installation plate.
•Insert the spacer etc. between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall.
Connecting the piping to the indoor unit and the drain hose to drain pipe.
1.Align the center of the pipes and sufficiently tighten the flare nut by hand.
2.Tighten the flare nut with a wrench.
Outside diameter |
Torque |
|
|
|
|
mm |
inch |
kg.m |
Ø6.35 |
1/4 |
1.8 |
Ø9.52 |
3/8 |
4.2 |
Ø12.7 |
1/2 |
5.5 |
3.When extending the drain hose at the indoor unit, install the drain pipe.
Indoor unit
Spacer
Installation plate 8cm
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Indoor unit tubing |
Flare nut Pipes |
||||||||
|
|
|
|
|
|
|
|
|
|
Open-end wrench (fixed)
Flare nut
Wrench |
Connection pipe |
Indoor unit tubing
Drain hose
Indoor unit drain hose
Adhesive Vinyl tape (narrow)
18 Room Air Conditioner
Installation
Wrap the insulation material around the connecting portion.
1.Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material. Bind them together with vinyl tape so that there may be no gap.
2.Wrap the area which accommodates the rear piping housing section with vinyl tape.
3.Bundle the piping and drain hose together by wrapping them with cloth tape over the range within which they fit into the rear piping housing section.
Reroute the pipings and the drain hose across the back of the chassis.
Set the pipings and the drain hose to the back of the chassis with the tubing holder.
•Hook the edge of tubing holder to tap on chassis and push the bottom of tubing holder to be engaged at the bottom of chassis.
Indoor unit installation
1.Remove the spacer.
2.Ensure that the hooks are properly seated on the installation plate by moving it left and right.
3.Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots(clicking sound).
Plastic bands Insulation material
Connection |
Indoor |
|
unit piping |
||
pipe |
||
|
||
Vinyl tape |
Wrap with vinyl tape |
|
(wide) |
|
|
|
Pipe |
|
|
Vinyl tape(narrow) |
|
Connecting cable |
|
|
|
Pipe |
Drain hose
Vinyl tape(narrow)
Wrap with
vinyl tape(wide)
Piping for passage through piping hole
Tubing holder
Connecting
cable
Drain hose
Service Manual 19
Installation
CAUTION: Installation Information
For left piping. Follow the instruction below.
Good case
• Press on the upper side of clamp and unfold the tubing to downward slowly.
Bad case
• Following bending type from right to left may cause damage to the tubing.
20 Room Air Conditioner
Installation
Outdoor
Align the center of the pipings and sufficiently tighten the flare nut by hand.
Finally, tighten the flare nut with torque wrench until the wrench clicks.
•When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench.
Outside diameter |
Torque |
|
|
|
|
mm |
inch |
kg.m |
Ø6.35 |
1/4 |
1.8 |
Ø9.52 |
3/8 |
4.2 |
Ø12.7 |
1/2 |
5.5 |
Ø15.88 |
5/8 |
6.6 |
Ø19.05 |
3/4 |
6.6 |
Outdoor unit
Liquid side piping (Smaller diameter)
Gas side piping (Bigger diameter)
Torque wrench
Service Manual 21
Installation
ConnectingtheCables
Indoor
Connect the cable to the indoor unit by connecting the wires to the terminals on the control board individually according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal No. are the same as those of the indoor unit.)
CAUTION:
•The above circuit diagram is subject to change without notice.
•The earth wire should be longer than the common wires.
•When installing, refer to the circuit diagram behind the panel front of the indoor unit.
•Connect the wires firmly so that they may not be pulled out easily.
•Connect the wires according to color codes, referring to the wiring diagram.
CAUTION: If a power plug is not used, provide a circuit breaker between power source and the unit as shown by.
Main power source
Air
Conditioner
Circuit Breaker Use a circuit breake or time delay fuse.
CAUTION: The power cord connected to the "A" unit should be selected according to the following specifications(Type "B" approved by HAR or SAA).
(mm2)
NORMAL CROSS |
|
Grade |
|
|
|
|
|
9k |
|
12k |
|
-SECTIONAL AREA |
|
||
|
|
|
|
1.0 |
|
1.5 |
|
|
|
||
|
|
|
|
Unit(A) |
Indoor |
|
Indoor |
|
|
|
|
Cable Type(B) |
H05VV-F |
|
H05VV-F |
|
|
|
|
The power connecting cable connecting the indoor and outdoor unit should be selected according to the following specifications (Type "B" approved by HAR or SAA).
|
|
|
(mm2) |
|
NORMAL |
Grade |
|||
CROSS |
|
|
||
9k |
12k |
|||
-SECTIONAL |
|
|||
|
|
|
||
|
1.0 |
1.5 |
||
AREA |
||||
|
|
|
||
Cable Type(B) |
H07RN-F |
H07RN-F |
||
|
|
|
|
(AS-W096/126U_0 Series)
|
|
|
(mm2) |
|
NORMAL |
Grade |
|||
CROSS |
|
|
||
9k |
12k |
|||
-SECTIONAL |
|
|||
|
|
|
||
|
1.5 |
1.5 |
||
AREA |
||||
|
|
|
||
Cable Type(B) |
H07RN-F |
H07RN-F |
||
|
|
|
|
(AS-W096/126U_1 Series)
22 Room Air Conditioner
Installation
Outdoor
1.Remove the control cover from the unit by loosening the screw.
Connect the wires to the terminals on the control board individually.
2.Secure the cable onto the control board with the cord clamp.
3.Refix the control cover to the original position with the screw.
4.Use a recognized circuit breaker 20A(12k) between the power source and the unit.
A disconnecting device to adequately disconnect all supply lines must be fitted.
Circuit |
Grade |
|
Breaker |
9k~12k |
|
(A) |
|
|
15 |
||
|
Outdoor Unit
Terminal block
Over 5mm
Connecting cable
Connecting cable
Cover control
CAUTION: According to the confirmation of the above conditions, prepare the wiring as follows.
1.Never fail to have an individual power circuit specifically for the air conditioner. As for the method of wiring, be guided by the circuit diagram posted on the inside of control cover.
2.The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation. Check them and make sure that they are all tightly fastened. (If they are loose, it could cause burn-out of the wires.)
3.Specification of power source.
4.Confirm that electrical capacity is sufficient.
5.See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate.
6.Confirm that the cable thickness is as specified in the power source specification. (Particularly note the relation between cable length and thickness.
7.Always install an earth leakage circuit breaker in a wet or moist area.
8.The following would be caused by voltage drop.
•Vibration of a magnetic switch, which will damage the contact point, fuse breaking, disturbance of the normal function of the overload.
9.The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an air gap contact separation of at least 3mm in each active(phase) conductors.
Service Manual 23
Installation
CheckingtheDrainage
To check the drainage.
1.Pour a glass of water on the evaporator.
2.Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit.
Connecting area drain hose
Leakage checking
Drain pan
Drain hose
Leakage checking
Drain piping |
|
1. The drain hose should point downward for easy drain |
|
flow. |
Downward slope |
|
2. Do not make drain piping like the following.
|
Do not raise |
|
Accumulated |
|
|
|
|
|
drain water |
|
|
|
|
|
|
|
|
Tip of drain hose |
Less than |
|
|
|
|
Air |
|
||
|
|
|
|
50mm gap |
||
|
|
|
|
|
dipped in water |
|
|
|
|
|
|
|
|
Water |
|
Water |
Waving |
Water |
|
|
leakage |
|
leakage |
leakage |
Ditch |
|
|
|
|
|
||||
|
|
|
|
|
|
24 Room Air Conditioner
Installation
Formingthe Piping
Form the piping by wrapping the connecting portion of the indoor unit with insulation material and secure it with two kinds of vinyl tapes.
•If you want to connect an additional drain hose, the end of the drain outlet should be routed above the ground. Secure the drain hose appropriately.
In cases where the outdoor unit is installed below the indoor unit perform the following.
1.Tape the piping, drain hose and connecting cable from down to up.
2.Secure the tapped piping along the exterior wall using saddle or equivalent.
In cases where the Outdoor unit is installed above the Indoor unit perform the following.
1.Tape the piping and connecting cable from down to up.
2.Secure the taped piping along the exterior wall. Form a trap to prevent water entering the room.
3.Fix the piping onto the wall by saddle or equivalent.
Seal small openings around pipings with a gum type sealer.
Taping
Drain hose
Pipings
Connecting cable
Trap is required to prevent water from entering into electrical parts.
Seal a small opening around the pipings with gum type sealer.
Trap
Trap
Service Manual 25
Installation
AirPurging
Air purging
The air and moisture remaining in the refrigerant system have undesirable effects as indicated below.
1.Pressure in the system rises.
2.Operating current rises.
3.Cooling(or heating) efficiency drops.
4.Moisture in the refrigerant circuit may freeze and block capillary tubing.
5.Water may lead to corrosion of parts in the refrigeration system.
Therefore, after evacuating the system, take a leak test for the piping and tubing between the indoor and outdoor unit.
Air purging with vacuum pump
1. Preparation
• Check that each tube(both liquid and gas side tubes) between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed. Remove the service valve caps from both the gas and the liquid side on the outdoor unit. Note that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage.
2. Leak test
• Connect the manifold valve(with pressure gauges) and dry nitrogen gas cylinder to this service port with charge hoses.
CAUTION: Be sure to use a manifold valve for air purging. If it is not available, use a stop valve for this purpose. The "Hi" knob of the manifold valve must always be kept close.
•Pressurize the system to no more than 150 P.S.I.G. with dry nitrogen gas and close the cylinder valve when the gauge reading reached 150 P.S.I.G. Next, test for leaks with liquid soap.
CAUTION: To avoid nitrogen entering the refrigerant system in a liquid state, the top of the cylinder must be higher than its bottom when you pressurize the system. Usually, the cylinder is used in a vertical standing position.
1.Do a leak test of all joints of the tubing(both indoor and outdoor) and both gas and liquid side service valves. Bubbles indicate a leak. Be sure to wipe off the soap with a clean cloth.
2.After the system is found to be free of leaks,
relieve the nitrogen pressure by loosening the |
|
|
|
charge hose connector at the nitrogen cylinder. |
unit |
Manifold valve |
|
When the system pressure is reduced to normal, |
|
Pressure |
|
disconnect the hose from the cylinder. |
|
gauge |
|
|
Lo |
Hi |
|
|
|
Charge hose
Outdoor unit
Nitrogen gas cylinder(in vertical standing position)
26 Room Air Conditioner