LG UM30F Installation Manual page 44

THE INDOOR UNIT INSTALLATION
44
HEAT INSULATION
- Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance
(over 120 °C).
- Precautions in high humidity circumstance:
This air conditioner has been tested according to the "KS Standard Conditions with Mist" and
confirmed that there is not any default. However, if it is operated for a long time in high humid
atmosphere (dew point temperature: more than 23 °C), water drops are liable to fall. In this case,
add heat insulation material according to the following procedure:
- Heat insulation material to be prepared... Adiabatic EPDM or NBR with thickness 10 to 20 mm.
- Stick glass wool on all air conditioners that are located in ceiling atmosphere.
Insulation material standard
(mm)
(besides normal conditions for
applies to
residential use)
Refrigerant piping
dimensions (mm)
6.35
9.52
12.7
15.88
19.05
Gas piping 22.22
25.40
28.58
31.75
38.1
44.45
6.35
Liquid
9.52
piping
12.7~44.45
• Normal conditions: Temperature of 30 °C, relative humidity of 85 %
• Unfavorable conditions: Temperature of 30 °C, relative humidity of 90 % (humid places such as
bathrooms, swimming pools, etc.: air supply and exhaust fan installation)
Indoor
unit
Insulation material standard (mm) - residential
If installed in an air-conditioned
place (CASE 1)
(ex: bedroom, living room, etc.)
EPDM EPDM
19 13
19 13
19 13
19 13
19 13
19 13
19 19
19 19
19 19
25 19
25 19
9 9
13 13
Fastening band
(accessory)
Refrigerant
piping
Thermal insulator
(accessory)
If installed in a non-air
conditioned place (CASE 2)
(ex: hallway, outdoors, etc.)
EPDM
19
19
19
19
19
19
19
19
19
25
25
9
13
Insulation material
standard (mm)
(unfavorable
conditions)
EPDM
19
25
25
25
25
32
32
32
32
32
32
9
13