Calculate the factory charge and any additional refrigerant needed for extended pipe runs on split systems.
For R-32 systems, manufacturers typically specify 20 g/m of additional refrigerant beyond the standard pipe length (usually 7.5 m). R-410A requires approximately 25 g/m. Always verify against the specific unit's installation manual as amounts vary.
A typical 5 kW R-32 split system has a factory charge of approximately 1.1 kg, which covers standard pipe runs up to 7.5 m. Longer pipe runs require additional refrigerant at approximately 20 g/m beyond the standard length.
Yes. In New Zealand, handling refrigerants requires an ARC (Approved Refrigerant Handler) certificate under the Ozone Layer Protection Act. In Australia, an ARCtick licence is required. Always comply with local regulations.