Maximum Length Of Pipe And Extra Charge Of Refrigerant Charge - LG AMNH076LQL0 Service Manual
Multi type air conditioner
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Maximum Length of Pipe and Extra Charge of Refrigerant Charge
1. Inverter Multi -Distributor
1.1 The maximun allowable level and piping length
Distributor Type
Capacity
Total Length
(Btu/h)
36k
100
42k
125
48k
135
54k
145
1.2 Refrigerant Charge
Model
Standard length(m)
A6UW368FA0
A7UW428FA0
A8UW488FA0
A9UW548FA0
Additional charge(g) = Main piping additional refrigerant + Branch piping additional refrigerant
Main piping additional refrigerant = (Total main piping length - standard length) x Additional refrigerant
Branch piping additional refrigerant = (Total branch piping length - standard length) x Additional refrigerant
Note : If additional charge value after calculation comes out to be negative, then do not
consider additional charge.
Branch Pipe
Distributor
A
Distributor
h1
Main Pipe
B
Max Main Pipe
Total Branch
Length (A/B)
Pipe Length
40
60
55
70
55
80
55
90
Main piping length
Additional refrigerant(g/m)
5
40
10
50
10
50
10
50
h2
Max Branch
Max Elevation
Pipe Length
(h1)
20
30
20
30
20
30
20
30
Branch piping length
Standard length(m)
Additional refrigerant(g/m)
30
35
40
7k/9k/12k/18k/24k : 25
45
Installation
(m)
In - In Elevation
(h2)
15
15
15
15
Service Manual 75
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