LG MULTI F A5UW40GFA0

Heat pump 50Hz/R410A _ 54
3. Installation of outdoor unit
Part 3 Design and installation
3. Installation of outdoor unit
3.8.2 Refrigerant charge
The calculation of the additional charge should be taken into account for the additional length of pipe.
n (1Ø)
Additional charge (g) = ((A Room Installation Length – Standard Length (A) ) x a
+ (B Room Installation Length – Standard Length (A) ) x a +.. )
- CF(Correction Factor) x 150
h CF = Max. number of connectable indoor unit – Total number of connected indoor unit
If the total additional charge value after calculation comes out to be negative, then do not consider additional charge.
NOTE
Model Standard length, A (m) Additional refrigerant, a (g/m)
A2UW14GFA0 [MU2M15 UL2] 7.5 20
A2UW16GFA0 [MU2M17 UL2] 7.5 20
A3UW18GFA0[MU3M19 UE2] 7.5 20
A3UW21GFA0[MU3U21 UE2] 7.5 20
A4UW24GFA0[MU4M25 U42] 7.5 20
A4UW27GFA0[MU4M27 U42] 7.5 20
A5UW30GFA0[MU5M30 U42] 7.5 20
A5UW40GFA0[MU5M40 U42] 7.5 20
Model
Main piping length Branch piping length
Standard Length, A (m) Additional refrigerant, a (g/m) Standard Length, B (m) Additional refrigerant, b (g/m)
A7UW40GFA0 [FM40AH U42] 550520
A8UW48GFA0 [FM48AH U32] 550520
A9UW56GFA0 [FM56AH U32] 550520
n (1Ø , 3Ø)
Additional charge (g) = (( Total Main piping Length - Main Standard Length (A) ) x a
+ (A Room Branch Length – Standard Length (B) ) x b
+ (B Room Branch Length – Standard Length (B) ) x b
+ (C Room Branch Length – Standard Length (B) ) x b +.. )
- CF(Correction Factor) x 100
h CF = Max. number of connectable indoor unit – Total number of connected indoor unit
Model
Main piping length Branch piping length
Standard Length, A (m) Additional refrigerant, a (g/m) Standard Length, B (m) Additional refrigerant, b (g/m)
A7UW42LFA0 [FM41AH U32] 550520
A8UW48LFA0 [FM49AH U32] 550520
A9UW56LFA0 [FM57AH U32] 550520