LG PMUB11A INSTALLATION INSTRUCTIONS
INSTALLATION MANUAL
Branch Kit
To prevent injury to the user or other people and property damage, the following instructions must be followed.
WARNING This symbol indicates the possibility of death or serious injury.
CAUTION This symbol indicates the possibility of injury or damage.
WARNING
•Consult with the sale agency or the professional installation shop for installation.
•Carefully read Install Manual before installation.
•When refrigerant gas leaks before installation, perform air circulation before work.
•If refrigerant gas touches with fire devices, harmful gas may occur.
•Install product by using dedicated tools and pipe material manufactured for R410A (refrigerant).
•Check refrigerant leaks after work is completed.
•Be careful so that thermal insulation materials and neighboring inflammable substance should not be ignited when welding.
CAUTION
•Take care so that children should not touch with a vinyl bag and a sharp accessory.
•Wrap thermal insulation materials so that dew will not form on a pipe of refrigerant.
•Refer to Combination Table for the indoor connection capacity.
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Installation Manual 1
1. Type of branch pipe
Separately use a branch pipe depending on indoor capacity for installation.
Unbalance type of branch pipe must be connected depending on large capacity or small capacity.
Indoor Classification |
Model Name |
Capacity Ratio(%) |
Remark |
2 UNIT |
PMUB11A |
50:50 (1:1) |
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PMUB23A |
40:60 (2:3) |
Unbalance type |
3 UNIT |
PMUB122A |
20:40:40 (1:2:2) |
Unbalance type |
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PMUB112A |
25:25:50 (1:1:2) |
Unbalance type |
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PMUB111A |
33:33:33 (1:1:1) |
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4 UNIT |
PMUB1111A |
25:25:25:25(1:1:1:1) |
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2. Accessory for Installation
Manual |
Gas pipe |
Liquid pipe |
Insulation(Gas pipe) |
Insulation(Liquid pipe) |
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Insulation |
Band |
Socket |
(Ø15.88→Ø19.05)
• Procure other parts than those specified in this manual in the scene
•No. 
parts are used for connection of 48/60k indoor unit.
3.SPEC for branch pipe connection part
(Gas pipe) |
(I.D) |
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Ø19.05(3/4) |
Ø25.4(1) |
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A |
Ø9.52(3/8) |
Ø12.7(1/2) |
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Ø12.7(1/2) |
Ø15.88(5/8) |
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Ø6.35(1/4) |
Ø9.52(3/8) |
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Ø9.52(3/8) |
Ø12.7(1/2) |
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(Liquid pipe) |
B |
( ):inch |
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C
D
a b
2 Branch Kit
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