LG MULTI F MAX Install

2
Clearances
LG Multi F / Multi F MAX air-source units are engineered to be installed outdoors. These outdoor units require sufficient space to ensure proper
airflow, operation, and maintenance / service access. When installing outdoor units, allowable service, inlet, outlet, and space requirements MUST
be considered. If the installation space is too tight around the outdoor units, then the system will not operate properly and it will be difficult to
service. Figures below illustrate clearance requirements for various installation scenarios for Multi F and Multi F MAX outdoor units.
If placement options are limited because of a lack of ground space, roof space, a location that meets design requirements, on retrofit projects
where an equipment / mechanical room already exists, then the outdoor unit MAY be installed in an interior space ONLY IF specific conditions are
fulfilled. For example, if the Multi F / Multi F MAX outdoor unit is to be installed in an enclosure, it must have certain design specifications:
Other Outdoor Unit Placement Considerations:
• Noise (Operational and Electrical)
• Site Occupants
• Good Drainage for Condensate,
etc.
• Account for Snow Fall Levels
• Prevailing Winds
• Oceanside Applications (Install
the outdoor unit on the side of
the building opposite from direct
ocean winds. If such an installa-
tion is not possible, then install a
concrete windbreaker.)
• If the rules for installing Multi F / Multi F MAX outdoor units (either outside or inside) are not followed correctly, a drop in outdoor unit fan perfor-
mance and / or noise can occur, or if there is insufcient air ow exchange, the system could stop operating.
• All dimensions are minimum clearances considering airow only. Increase as necessary for NEC or other code compliance.
• If the installation scenario varies in any way from the samples provided here or in the complete installation manual, contact an LG representative for
guidance.
Louver Recommendations for Outdoor Unit Enclosures
• Enclosure is a Manual Door Open Type.
• Louver Angle: No More Than 15° Horizontally.
• Space Between Louvers : More than 4 inches (Recommend).
• Louver Shape: Wing or Plane Type.
Do not use “S” type louvers.
• Open Rate, Inlet, Outlet, Air Flow Rate, and Total Opening Rate must be taken into consideration. See the
complete Multi F / Multi F MAX Outdoor Unit Installation Manual for information.
Multi F Outdoor Unit Service Access and Allowable Clearances.
Std. 12
"
Min. 4"
20 inches or less
Std. 24"
Min. 10"
Std. 12"
Min. 4"
Min. 40"
Std. 24"
Min. 10"
Std. 24"
Min. 10
"
Std. 12"
Min. 4"
Multi F MAX Outdoor Unit Service Access and Allowable Clearances.
Ratio among H, A, and L.
L A
L ≤ H
0 < L ≤ 1/2 H 30 inches
1/2 H < L 40 inches
H < L Set Stand as: L ≤ H
“L” must be lower than “H”. If
a stand is necessary, it must
be contained (not open frame)
to prevent the discharge air
from short cycling.
Min. 12"
Min. 12"
Min. 24"
Obstacles on the suction side and on both left and right sides.
Min. 12"
Max. 20"
Min. 12"
Min. 40"
Min. 24"
Obstacles above, on the air intake side,
and on both left and right sides.
Min. 20"
Min. 20"
Min. 40"
Obstacles above and on the air discharge side. Where there are obstacles on both suction and discharge
sides (discharge side obstacle is higher than the outdoor unit).
Min. 20"
Min. 12"
L
Min. 40"
Min. 40"
Max. 20"
Min. 12"
Where there are obstacles above, and on both suction
and discharge sides (discharge side obstacle is lower
than the outdoor unit).
H
Min. 12"
Min. 79"
Min. 24"
Min. 40"
Series installation.
Min. 12"
Min. 24"
Min. 24"
Side-by-side series installation.
Maximum 15°
(Recommended)
More than 4 in.
(Recommended)
Louver
Louver Recommendations.
If the outdoor unit is installed between standard and minimum clearances, capacity decreases approximately 10%.

LG MULTI F MAX Specifications

General

Brand	LG
Model	MULTI F MAX
Category	Air Conditioner
Language	English