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COMPREHENSIVE APPLICATION AND INSTALLATION MANUAL
LG Electronics
Installation check list
Configuration
System Design
Applications
Introduction
1.4 Add refrigerant
Items to check
Was additional amount of refrigerant correctly calculated based on the
length of added piping and was the weight of refrigerant measured
correctly with an electronic scale before injection?
Result
Purpose
Add refrigerant according to length of pipings
Applicants
AWHP SPLIT
1. Standard pipe length is 7.5
m If the pipe length is longer than 7.5
m, additional charge of the refriger-
ant is required according to the table.
• Example : If 16kW model is installed at a distance of 50
m, 1,700
g of refrigerant should be added
according to
following formula : (50-7.5) x 40g = 1,700
g
2. Rated capacity of the product is based on standard length and maximum allowable length is based on
the product
reliability in the operation.
3. Improper refrigerant charge may result in abnormal operation.
Outdoor unit
Indoor unit
A
B
Outdoor unit
Indoor unit
A
B
A trap is not necessary
when the outdoor unit is
installed in a higher
position than the indoor
unit.
Capacity
Pipe Size (mm : inch)
(Diameter : Ø)
Length A (m)
Elevation B (m)
*Additional
Refrigerant
(g/m)
Gas
Liquid
Standard
Max.
Standard
Max.
5kW
7kW
9kW
12kW
14kW
16kW
15.88(5/8") 9.52(3/8")
7.5
50
0
30
40
1.6 Installation indoor unit
Items to check
Is the indoor unit installed in the building and installed and fixed ac-
cording to the installation manual?
Result
Purpose
Installation of indoor unit
Applicants
AWHP SPLIT
The installation place should be free from outdoor weather conditions such as rain, snow, wind,
frost, etc.
- Choose the place where is water-resistant or good drainage.
- Service space should be secured.
- No flammable materials around the indoor unit.
- The place should prevent animals such as mice from entering the indoor unit or attacking wires.
- Do not place anything in front of the indoor unit to ensure air circulation around the indoor unit.
- Do not put anything under the indoor unit to avoid unexpected water leakage.
- In case of water pressure increasing to 3 bar, water drainage should be conducted when water is
drained by safety valve.
Bottom
screws
Upper
screw
Bottom
screws
Upper
screw
Step 1. Disconnect the remote control case
from the front panel and disconnect the
remote control cable.
Step 2. After releasing five screws, detach front
cover from the indoor unit. While detach-
ing the front cover, grab the left and right
sides of the front cover. Then pull into
upward direction.
Bottom
screws
Upper
screw
Bottom
screws
Upper
screw
Step 3. Attach "Installation Sheet" to the wall
and mark the location of bolts. This
sheet helps to find correct location to
the bolts.
Step 4. Detach the Installation sheet. Screw
bolts at the hole marks on the wall.
When screwing bolts, use M8 ~ M11
anchor bolts to secure hanging the
indoor unit.
Step 5. Hang the indoor unit at the supporting
plate.
