LG ATNH24GPLE2 User Manual page 76

SINGLE ZONE
3. Installation of indoor unit
• Countermeasure:
- Use the carpet on the floor (compared to the tiles the car-
pet over it will have a 3 degree rise in temperature)
- Insulating the floor.
- Floor heating
CAUTION
• Case of cold air intake:
The duct surface will have the dew drops so a insula-
tion on the duct is a must.(Insulation material: a glass
wool of thickness 25(31/32)mm(inch) will be appropri-
ate.)
3) In case of high temperature or high humid-
ity between the false ceiling and ceiling
slab(near by the sea, river, lake, spa)
• In case of temperature of 30 degree and humidity
above 80%, the units body as well as the piping
insulation should be strengthened.
Refer to the picture given below.
Psychrometric chart
Relative humidity
• Places having the temperature and humidity of the
surrounding and the
The surrounding water sources(sea, river etc.)
In case the steam is generated between the false ceiling
and the ceiling slab
Due to some nearby by steam source.
- Indoor unit: Insulate the unit body with some insulation
like glass wool atleast 10(3/8)mm(inch) in thickness.
Additional insulation required
40 _
Heat pump 60Hz/R410A
Enhance additional
insulation required area
30℃(86℉)
• In case of the multi flow type, use the high humidity kit.
Otherwise the dew drops can be seen in the unit body.
• Refrigerant piping: Increase the piping insulation
thickness with thickness above 20(25/32)mm(inch).
• Others: Inside the ceiling near th air tight seal places
(no escape of the humidity)
Grill for ventilation
• In case of multiple indoor cassette units
(recommended)
Indoor unit
Ventilator
Lighting
Above
1500(59-1/6)
mm(inch)
Above 2000(78-23/32 )mm(inch)
Above 3000(118-3/32 )mm(inch)
Refrigerant piping
Indoor unit