Additional Charge - Williamson-Thermoflo 9SRA-HE Installation & Service Manual

ADDITIONAL CHARGE AND DISTANCE
Refrigerant suitable for a piping length of 20 ft (6 m) is charged in the outdoor unit at the factory. When the pipe is longer
than 20 ft (6 m), additional charging is necessary. This operation can only be performed by a qualified refrigeration
specialist. Additional amount must be added for each extra 3.3 ft (1 m), see the table below:
Additional refrigerant
Limit of tubing length
Limit of elevation
between the two unit
Installation & service manual _13
Models 9SRA-HE
20 g (0.7 oz)
Models 9SRA-HE | 12SRA-HE | 15SRA-HE | 18SRA-HE | 24SRA-HE
ft (m)
12SRA-HE | 15SRA-HE |
18SRA-HE
30 g (1.06 oz)
49 (15)
20 (6)
24SRA-HE
40 g (1.41 oz)