2026-Bid-SG-04_Addendum Three Narrative_Gabrielino HS HVAC Replacement

This addendum clarifies technical requirements for the HVAC replacement project at Gabrielino High School, involving mechanical, electrical, and fire‑alarm work. The district will provide 16 Carrier HVAC units; the contractor must size and install disconnects and over‑current protection per the Carrier MEOR submittal, install one new roof curb, and integrate fire‑alarm devices with the existing Simplex system, handling disconnect, safe‑off, reconnection, programming, and testing. • Use Carrier‑approved submittal for equipment sizing, disconnect and fuse sizing. • Install only one new roof curb; all other curbs are existing. • All fire‑alarm equipment must be Simplex, coordinated per sheet E0.4 and Specification 28‑46‑20. • Electrical contractor responsible for branch‑circuit upgrades and fire‑alarm integration.