Piping and Wiring for Outdoor Unit
6. Piping and Wiring for Outdoor Unit
Procedures about refrigerant piping and electric wiring at the outdoor are described in this chapter. Most of
procedures are similar to those of LG Air Conditioner.
Before starting refrigerant piping, constraints in pipe length and elevation should be examined. After resolv-
ing all constraints, some preparations are required to proceed. Then connecting pipe to the outdoor and
the indoor unit is beginning.
Refrigerant Piping
Constraints in Pipe Length and Elevation
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.
1. Standard pipe length is 7.5m If the pipe length is longer than 7.5m, additional charge of the re-
frigerant is required according to the table.
• Example : If 16kW model is installed at a distance of 50m, 1,700g of refrigerant should be
added according to following formula : (50-7.5) x 40g = 1,700g
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.
CAUTION
Note
:
Fill in the f-gas Label attached on outdoor about the quantity of the fluorinated greenhouse gases (This note about
f-gas label may not apply depending on your product type or market.)
①
Manufacturing site (See Model Name label)
②
Installation site (If possible being placed adjacent to the service points for the addition or removal of refrigerant)
③
The total Charge (
①
+
②
)
Installation Manual
39
ENGLISH
Capacity
Pipe Size (mm : inch)
(Diameter : Ø)
Length A (m)
Elevation B (m)
*Additional
Refrigerant
(g/m)
Gas
Liquid
Standard
Max.
Standard
Max.
3kW
12.7(1/2")
6.35(1/4")
7.5
30
0
30
20
5kW
15.88(5/8") 9.52(3/8")
7.5
50
0
30
40
7kW
9kW
12kW
15.88(5/8") 9.52(3/8")
7.5
50
0
30
40
14kW
16kW
Summary of Contents for Therma V AHUW096A2
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