Samsung EH035CAV Installation Manual page 52

How to Calculate the Quantity of Adding Refrigerant
If you have used more than "P", add "Q" of refrigerant for extra meter.
(For maximum piping length and height, refer to page 13)
The quantity of additional refrigerant is variable according to the installation
situation. Thus, make sure the outdoor unit situation before adding
refrigerant. This operation can only be performed by a qualified refrigeration
specialist.
Model
Indoor unit
EH035CAV
Outdoor unit
0~49.2ft : -
UH035CAV
49.2~65.6 ft :0.16 oz/ft
UH052CAV
UH070CAV
i.e. 1 indoor unit
Additional charging amount
Piping length
UH052CAV
"a"
16.4ft
-
24.6ft
-
31.2ft 1.41oz
"Q"(R410A)
EH052CAV
-
-
0.21 oz/ft
- -
UH070CAV
-
-
1.06oz
"P"
EH070CAV
-
24.6ft
24.6ft
-
24.6ft
0.11oz/ft
19
E-