Installation; Installation Limit - LG ARNU483BRZ4 Installation Manual

Installation

Installation Limit

Read completely, then follow step by step.
1. Outside Air Unit Combination
No Connection Condition
Only Outside Air Unit instal-
1
lation
Mixture Installation with
2 standard indoor units and
Outside Air Units
CAUTION : Failure to comply with the above connection conditions for installa-
tion, it can cause cooling & heating capacity down.
2. Connection of the Outdoor Unit
<Only Outside Air Unit install>
Outdoor : 10HP
OAU
5HP
<Wrong Install>
Outdoor : 20HP
▶ The total capacity of indoor units exceed 100% of outdoor unit.
3. Installation of intake air duct
Min. 78.7 inch
1/30 Slope
Inlet Hood
Intake Air Duct
Outside Air Unit
Exhaust Fan
Door
1) The total capacity of Outside Air Unit should be 50~100% of outdoor unit.
2) The max quantity of Fresh Air Intake unit is 2 Units.
1) The total capacity of indoor units (standard Indoor Unit + Outside Air Unit)
should be 50~100% of outdoor unit.
2) The total capacity of Outside Air Units should be less than 30% the total
capacity of indoor units.
<Mixture Install>
Outdoor : 20HP
OAU
5HP
OAU
Standard Standard
5HP 5HP 5HP
① Inlet Hood
Inlet Hood should be installed such that no water enter inside the unit
② Intake Air Duct
The Intake Air Duct must have down-slope about 1/30.
The length of Intake Air Duct should be longer than 78.7 inch.
Outlet Air
③ Outside Air Unit
If wired remote controller is not connected, it will display strange
Exhaust air
value to the room temperature
④ Exhaust Fan
Outside Air Unit will make room the positive pressure.
Exhaust fan should be installed to maintain the room pressure.
⑤ Door
It would be possible to raise in the room air pressure because of
Outside Air Unit.
In that case, the door could hurt someone in front of door.
So be careful of the positive pressure to design the door.
Combination
OAU
Standard
5HP
5HP
* OAU : Outside Air Unit
Standard Standard
Standard: Standard Indoor Unit
5HP 5HP
Installation
Standard Standard
5HP 5HP
Installation Manual 7