LGRED Installation Manual

48
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 MAX WITH
LGRED SYSTEMS
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For Multi F MAX with LGRED
outdoor units, piping can be in-
stalled in one of four directions:
front, rear, right, and bottom.
Whatever direction is chosen,
plug the access holes with
field-provided putty or insulation
to fill all gaps.
If the piping is installed from the
bottom, the access hole of the
base pan must be knocked out
before piping work begins.
Figure 46: Multi F MAX with LGRED Outdoor Unit
Refrigerant Piping Connection Options.
Insects or small animals entering the outdoor unit will cause a short circuit in the electrical
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Insects or small animals entering the outdoor unit will cause a short circuit in the electrical
box, which will lead to unit failure.
Access Hole Knock Out
for Liquid / Gas Piping
Base Pan
Front
Right
Rear
Bottom
Gas Piping
Service Port
(Larger Dia.)
Liquid Piping
Service Port
(Smaller Dia.)
Putty or Insulation (Field Supplied)
Drain Hose
Communication /
Connection
(Power) Cable
Piping to the
Branch
Distribution Units
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Figure 48: Filling Access Holes in the Outdoor Units.
Multi F MAX with LGRED Outdoor Unit System Piping Connections
Outdoor Unit Piping Connections LMU361HHV, LMU421HHV, LMU480HHV
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 25: Multi F MAX with LGRED Outdoor Unit Piping Connections.
Torque
Wrench
Figure 49: Multi F MAX with LGRED Outdoor Unit
Refrigerant Pipe Connections.
Correctly route the piping so it does not make contact with mounting bolts. Allow room
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