General Assist Technical Reference
R32 Multi System
System overview and technical reference
Multi-type air conditioning system for two to five indoor units connected to a single outdoor unit
System overview: The R32 Multi System is a variable refrigerant multi-type system designed to connect two to five indoor units to a single outdoor unit. It uses R32 refrigerant and is suited to residential and light commercial applications where individual room or zone control is required.
Important: Indoor unit combinations, total connected capacity, pipe lengths and installation requirements must be checked against the applicable model documentation before installation. Do not assume all indoor units can be connected in every combination.
1. System overview
| Item | Details |
|---|---|
| System type | R32 multi-type air conditioning system |
| Indoor units per outdoor unit | Two to five indoor units, subject to outdoor unit model and approved connection combinations |
| Refrigerant | R32 |
| Typical application | Residential and light commercial installations requiring multiple independently controlled indoor units |
2. System and connection reference
Use the following reference information to confirm compatible indoor units, approved connection combinations, connected capacity requirements and model-specific limitations.
3. Installation and technical reference
Before installation: Confirm the exact outdoor unit model and use the applicable tables below to verify maximum connected capacity, allowable indoor unit combinations, refrigerant piping requirements and any branch or separation tube requirements.
4. Important notes
- Always identify the exact outdoor unit model before selecting indoor units or checking combinations.
- The number of connectable indoor units does not by itself confirm that a proposed capacity combination is approved.
- Check both the minimum and maximum total connected indoor capacity applicable to the outdoor unit.
- Verify individual branch lengths, total piping length, height differences and additional refrigerant requirements against the applicable installation documentation.
- R32 refrigerant requires installation and service by appropriately qualified personnel and compliance with applicable regulations and safety requirements.