LG MULTI F - Installing Multi F MAX Systems; Multi F MAX Refrigerant Piping Connections; Piping Routes; Multi F MAX Outdoor Unit System Piping Connections

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MULTI F / MULTI F MAX 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
INSTALLING MULTI F MAX SYSTEMS
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For Multi F MAX outdoor units, piping can be installed in one of four directions: front, side, back, and down (A). If the downward installation is
chosen, the knockout hole in the base pan must be accessed (B).
Whatever direction is chosen, plug the access holes with field-provided putty or insulation to fill all gaps (C).
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or death.
Insects or small animals entering the outdoor unit will cause a short circuit in the electrical box, which will lead to unit failure.
Multi F MAX Outdoor Unit System Piping Connections
Outdoor Unit Piping Connections LMU480HV, LMU540HV, LMU600HV
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
• 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 MAX outdoor unit connection types.
Table 24: Multi F MAX Outdoor Unit Piping Connections.
Figure 48: Multi F MAX Piping Installation.
Correctly route the piping so it does not make contact with mounting bolts. Allow room
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Front
Side
Back
Knockout Hole Base Pan
Down
Gas Piping
(Bigger Diameter)
Liquid Piping
(Smaller Diameter)
Putty or Insulation (field-supplied)
Drain Hose
Wire
Connection Pipe
A
B
C
Torque
Wrench
When tightening the
piping connection,
firmly hold the flare nut.
Figure 49: Multi F MAX Outdoor Unit Refrigerant Pipe
Connections.