LGRED Heat LMU180HHV Installation Manual

46
MULTI F / MULTI F MAX with LGRED Outdoor Unit Installation Manual
Due to our policy of continuous product innovation, some specifications may change without notification.
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MULTI
F
MAX
MULTI
F
WITH
INSTALLING MULTI F WITH
LGRED SYSTEMS
Multi F with LGRED Outdoor Unit to Indoor Unit Piping Connections
Figure 41: Multi F with LGRED Outdoor Unit
Refrigerant Pipe Connections (LMU360HHV
shown as example).
Multi F with LGRED Outdoor Unit
(18, 24, 30kBtu/h)
Liquid
Piping
Liquid Piping
Service
Port
Vapor Piping
Service Port
ROOM A
ROOM B
ROOM C
Vapor Piping
Avoid Pipe Damage
• When routing field-provided piping, avoid damaging the outdoor unit from exces-
sive vibration.
• Properly insulate the liquid and gas lines separately up to the point of connection at
the unit frame.
• See table below for Multi F with LGRED outdoor unit connection types.
Correctly route the piping so it does not make contact with mounting bolts. Allow room
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Table 21: Multi F with LGRED Outdoor Unit Piping Connections.
Outdoor Unit Piping Connections LMU180HHV LMU240HHV LMU300HHV
Liquid Line Connection (in., OD) x Qty. Ø1/4 x 2 Ø1/4 x 3 Ø1/4 x 4
Vapor Line Connection (in., OD) x Qty. Ø3/8 x 2 Ø3/8 x 3 Ø3/8 x 4
Connection sockets (included as a factory-supplied accessory with the indoor units) will need to be used when piping the indoor units to the outdoor
unit. See tables above and below for indoor unit piping connection and connection socket dimensions. See the follow page for the connection socket
installation procedure.
Indoor Unit Capacity
Vapor (in., OD) Liquid (in., OD)
A B A B
18,000 Btu/h: Wall-Mounted ĺĺ ĺ
15,000 Btu/h: Console; 18,000 Btu/h: Low Static
Duct, Four-Way Cassette
ĺ N/A
24,000 Btu/h ĺ N/A
Table 22: Indoor Unit Pipe Sizes.
Table 23: Connection Socket Dimensions.
Indoor Unit Capacity
Vapor Line
Piping Size (in., OD)
Liquid Line
Piping Size (in., OD)
7,000 Btu/h
Ø3/8
Ø1/4
9,000 Btu/h
12,000 Btu/h
15,000 Btu/h
15,000 Bth: Console;
18,000 Btu/h
Ø1/2
24,000 Btu/h
Table 24: Indoor Unit Piping Connections.
Indoor Unit Capacity
Vapor Line
Conn. (in., OD)
Liquid Line
Conn. (in., OD)
7,000 Btu/h
Ø3/8 Ø1/4
9,000 Btu/h
12,000 Btu/h
15,000 Btu/h
18,000 Btu/h: Wall-Mounted Ø5/8 Ø3/8
15,000 Btu/h: Console;
18,000 Btu/h: Low Static Duct,
Four-Way Cassette
Ø1/2 Ø1/4
24,000 Btu/h Ø1/2 Ø1/4