AIRSTAGE Applied Technical Reference
GI to General Airstage Applied Model Conversion
How to identify and convert legacy GI model references
Use this guide for technical documents, spare parts, service requests and customer enquiries.
Quick rule: Convert the first three-letter GI unit type to the corresponding General Airstage Applied type, then reverse the second and third digits in the size code. Keep the version section unchanged.
1. Model name structure
A model name is made up of three main sections:
| Section | Meaning | Example |
|---|---|---|
| Unit type | Identifies the specific type of unit | AAC |
| Version | Identifies the version or configuration | IK/A/WP/SSL |
| Size | Identifies the unit size or capacity | 281P |
Example model format
AAC/IK/A/WP/SSL 281P
AAC = unit type | IK/A/WP/SSL = version | 281P = size
2. GI unit type conversion table
Match the first three letters of the GI model to the equivalent General Airstage Applied unit type.
| Unit type description | GI type | General Airstage Applied type |
|---|---|---|
| Air-cooled units with axial fans | CHA | AAC |
| Air-cooled units with radial fans | CRA | ARC |
| Water-cooled units | CWW | AWC |
| Condenserless units | MEA | AME |
| Condensing units with axial fans | MHA | AMH |
| Condensing units with radial fans | MRA | AMR |
| Remote air-cooled condensers | RCA | ARA |
| Dry-coolers | RCW | ARW |
| Remote hydronic modules | MR | MH |
3. How to convert a model code
| 1 | Identify the unit type. Read the first two or three letters at the start of the GI model. |
| 2 | Convert the unit type. Use the conversion table above to find the General Airstage Applied equivalent. |
| 3 | Keep the version unchanged. The letters and separators in the middle section remain the same. |
| 4 | Reverse the second and third size digits. For example, 218P becomes 281P. |
| 5 | Use the converted model. Search internal technical documents, spare parts records and service references using the General Airstage Applied format. |
Important - size code conversion: The size code does not always remain visually identical. In the supplied conversion method, the second and third digits are reversed. For example, 218P converts to 281P.
4. Worked example
| Reference | Model |
|---|---|
| GI model | CHA/IK/A/WP/SSL 218P |
| General Airstage Applied equivalent | AAC/IK/A/WP/SSL 281P |
| Section | GI example | Airstage Applied example | Action |
|---|---|---|---|
| Unit type | CHA | AAC | Convert using the table |
| Version | IK/A/WP/SSL | IK/A/WP/SSL | Keep unchanged |
| Size | 218P | 281P | Reverse the second and third digits |
5. Internal handling guidance
When a ticket, quote request, spare parts enquiry or service request references a GI model:
- Identify the unit type at the beginning of the model number.
- Match the GI type to the equivalent General Airstage Applied type.
- Keep the version or configuration section unchanged.
- Reverse the second and third digits in the size code.
- Use the converted model when searching internal documentation, spare parts records or technical references.
- Confirm the full model before providing parts or technical advice.
Escalation required: If the model cannot be matched using the conversion table, or the size code does not follow the expected format, escalate to Technical Support before confirming spare parts, compatibility or technical advice.