55
Always charge the system with the type and amount of refrigerant recommended by the manufacturer.
In most cases the refrigerant charge is indicated on the type label of the appliance. Charging can be done
according to volume or weight. Use a charging glass for charging by volume. Flammable refrigerants must
be charged by weight.
If the max refrigerant charge is exceeded the oil in the compressor may foam after a cold start and the valve
system could be damaged. The refrigerant charge must never be too large to be contained on the condenser
side of the refrigeration system. Only the refrigerant amount necessary for the system to function must be
charged.
Compressor type
Max. refrigerant charge
R134a R600a R290 R404A
P 300 g / 10.6 oz. 120 g / 4.2 oz. - -
T 400 g / 14.1 oz.* 150 g / 5.3 oz. 150 g / 5.3 oz. 600 g / 21.2 oz.
DELTA - 150 g / 5.3 oz. - -
X - 150 g / 5.3 oz. - -
D, DLV - 150 g / 5.3 oz. 150 g / 5.3 oz. -
TL ... G 600 g / 21.2 oz. 150 g / 5.3 oz. 150 g / 5.3 oz. -
KAPPA - 150 g / 5.3 oz. - -
N, NLV 400 g / 14.1 oz.* 150 g / 5.3 oz. 150 g / 5.3 oz. -
F 900 g / 31.2 oz. 150 g / 5.3 oz. - 850 g / 30 oz.
S, SLV 1300 g / 45.9 oz. - 150 g / 5.3 oz. 300 g / 45.9 oz.
G 2000 g / 70.5 oz. - - 2000 g / 70.5 oz.
SC Twin 2200 g / 77.6 oz. - - 2200 g / 77.6 oz.
* Single types with higher limits available, see data sheets
For the refrigerants R600a and R290 the closing of the process tube can be done using a LOKRING® con-
nection. Brazing is not allowed on systems with flammable refrigerants.
31.1
Maximum refrigerant
charge
31.
CHARGING OF REFRIGERANT
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