LG LCN128HV4 - Page 27

27
Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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MAX
MULTI
F
MULTI
F
Multi F MAX with LGRED Outdoor Unit System Piping Connections
Outdoor Unit Piping Connections LMU360HHV, LMU420HHV
Liquid Line Connection (in., OD) x Qty. Ø3/8 x 1
Vapor Line Connection (in., OD) x Qty. Ø3/4 x 1
Avoid Pipe Damage
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Table 13: Multi F MAX with LGRED Outdoor Unit Piping Connections.
Torque
Wrench
Figure 27: Multi F MAX with LGRED Outdoor Unit
Refrigerant Pipe Connections.
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Multi F MAX with LGRED Outdoor Units
(36, 42 kBtu/h)
(For 7~24 kBtu/h Indoor Units)
(Branch Distribution Unit: PMBD3640)
A ROOM
B ROOM
C ROOM
D ROOM
A ROOM
B ROOM
C ROOM
D ROOM
(Branch Distribution Unit: PMBD3641)
(Ports A~C only for 7~24 kBtu/h
Indoor Units;
Port D only for 24 or 36 kBtu/h
Indoor Units)
Branch Distribution to Indoor Unit Piping Connections
• Install indoor unit liquid and vapor refrigerant pipes (and connection wiring) to the appropri-
ate branch distribution ports.
• Clearly note on the indoor unit’s refrigerant piping (liquid, vapor) which branch distribution
port it is connected to (A, B, C, D).
Table 14: Branch Distribution Unit Piping Connections.
Figure 28: Branch Distribution Ports to Indoor
Units -- Side View.
Figure 29: Branch Distribution Piping
Connections.
ABC D
Outdoor Unit to Indoor Unit Connections
INSTALLATION
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Branch
Distribution
Unit
Refrigerant Connections
Pipe Size (in.)
Connectible Indoor Unit Capacity
(Btu/h)
Liquid Vapor
PMBD3620 Ø1/4 x 2 Ø3/8 x 2 7,000, 9,000, 12,000, 15,000, 18,000, 24,000
PMBD3630 Ø1/4 x 3 Ø3/8 x 3 7,000, 9,000, 12,000, 15,000, 18,000, 24,000
PMBD3640 Ø1/4 x 4 Ø3/8 x 4 7,000, 9,000, 12,000, 15,000, 18,000, 24,000
PMBD3641 Ø1/4 x 4
Ø3/8 x 3 7,000, 9,000, 12,000, 15,000, 18,000, 24,000 (A, B, C)
Ø1/2 x 1 24,000, 36,000 (D)