Intake Air Duct; The Control System - LG MULTI V ARNU48GBRZ4 Manual

MULTI V
Indoor Unit
11. Installation
3. Installation of intake air duct
ⓐ
Inlet Hood
Inlet Hood should be installed such that no water enter inside the unit

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.
Fresh Air Intake Unit
If wired remote controller is not connected, it will display strange value to the room
temperature
Exhaust Fan
Fresh Air Intake Unit will make room the positive pressure.
Exhaust fan should be installed to maintain the room pressure.
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.

4. The Control System

1) In case of connecting with Standard indoor units, Standard indoor unit should be a master unit.
Separate Fresh Air Intake Unit with Standard indoor units
Set only one Standard indoor units to Master,
2) In case of using central remote controller, mixture of indoor units and Fresh Air Intake Unit in same
zone is not possible.
Separate Fresh Air Intake Unit zone with Standard indoor units zone.
Min. 2m
ⓒ
ⓑ
1/30 Slope
ⓔ
Standard Standard
FAU
Slave
Set one of the IDU to Master
Outlet Air
Standard
* FAU : Fresh Air Intake Unit
Standard: Standard Indoor Unit
Fresh Air Intake Unit
ⓓ
Exhaust air
21