Piping Length And Elevation; Refrigerant Charge - LG A2UW18GFAB Manual De Instrucciones

Piping length and elevation

Multiple Piping Models
Capacity
Phase
(kBtu/h)
18
1Ø 24
36
A
h1
Multiple Piping Type

Refrigerant charge

The calculation of the additional charge should be taken in account for the length of extra pipe.
Multiple Piping Models
Capacity
Phase
(kBtu/h)
18
1Ø 24
36
• Multiple Piping Models
Additional charge (g) = ((A Room Installation Length – Standard Length ) x 20g/m
h CF = Max. number of connectable indoor unit – Total number of connected indoor unit
INSTALLATION OF INDOOR, OUTDOOR UNIT
Total Length
30
50
75
h2
B
Standard Max Piping for
Length (m) one room (m)
7.5 20
7.5 25
7.5 25
+ (B Room Installation Length – Standard Length ) x 20g/m +.. )
- CF(Correction Factor) x 150
Max Length Max Elevation
(A/B) (h1)
20 15
25 15
25 15
CAUTION
!
Capacity is based on standard length and
maximum allowance length is on the
basis of reliability. If outdoor unit is at
higher elevation than the indoor units,
after 24m of vertical height, 1 oil trap is
required.
Max total Chargeless
Piping Length
30
50
75
(Unit: m)
In-In Elevation
(h2)
7.5
7.5
7.5
(Unit: m)
Additional
Length Charge (g/m)
20 20
22.5 20
37.5 20
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