Treat XX and MOD 165335-10 as controlled modified identities; do not infer a standard system length.
Important Notice: Confirm the complete 990-05-XX-01-05 MOD:165335-10 identity, installed-system configuration, approved isolation and functional acceptance record before service release.
Important Notice: The first document presents model-specific technical data and engineering questions. The second provides a separate installation, commissioning and acceptance workflow.