Installation; Installation Limit - LG ARNU48GBRZ4 Installation Manual

Installation

Installation Limit

Read completely, then follow step by step.
1. Fresh Air Intake Unit Combination
No Connection Condition
Only Fresh Air Intake Unit installation
1
Mixture Installation with standard
2
indoor units and Fresh Intake Units
CAUTION : Failure to comply with the above connection conditions for
installation, it can cause cooling & heating capacity down.
2. Connection of the Outdoor Unit
It is possible to connect Heat Pump Models.
It is not possible to connect Heat Recovery Models.
<Only Fresh Air Intake Unit install>
Outdoor : 10HP
FAU
5HP
<Wrong Install>
Outdoor : 20HP
FAU
5HP
▶ The total capacity of indoor units exceed 100% of outdoor unit
3. Installation of intake air duct
Min. 2m
1/30 Slope 1/30 Slope 1/30 Slope
Outlet Air
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 2m.
③ Fresh Air Intake Unit
If wired remote controller is not connected, it will display strange value to the room temperature
④ Exhaust Fan
Fresh Air Intake 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 Fresh Air Intake Unit.
In that case, the door could hurt someone in front of door.
So be careful of the positive pressure to design the door.
1) The total capacity of Fresh Air Intake 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 + Fresh Air Intake Unit)
should be 50~100% of outdoor unit.
2) The total capacity of Fresh Air Intake Units should be less than 30% the total
capacity of indoor units.
<Mixture Install>
Outdoor : 20HP
FAU
FAU
5HP
5HP
Standard Standard Standard Standard
5HP 5HP 5HP 5HP
Inlet Hood
Intake Air Duct
Fresh Air Intake Unit
Exhaust Fan
Door
Exhaust air
Combination
Standard Standard Standard
5HP 5HP 5HP
* FAU : Fresh Air Intake Unit
Standard: Standard Indoor Unit
Installation Manual 7
Installation