Build the store as connected systems—not one big sales-floor run.

Use this playbook for

Sales floors, refrigerated and freezer aisles, produce areas, deli and bakery zones, open ceilings, congested refrigeration overhead, occupied-store remodels, and phased reopening work.

Before material moves

• Separate duct by RTU/system, store department, floor/grid, and installation sequence.
• Walk the full route from delivery point to final position, including doors, turns, cases, fixtures, and lift access.
• Confirm the latest mechanical, refrigeration, reflected ceiling, architectural, and coordination drawings.

Before hangers and mains

• Verify structural attachments and support details from approved project information.
• Lay out from durable control points; do not chain every measurement from the last hanger.
• Coordinate the least-flexible systems and fittings before long mains trap them.

Refrigerated and produce areas

• Protect open-case air curtains by verifying diffuser location and throw.
• Preserve refrigeration valve, piping, drain, and replacement access.
• Inspect insulation continuity, vapor barriers, exposed metal, and wet material where condensation appears.

Deli, bakery, and specialty exhaust

• Confirm what the hood serves before treating exhaust as grease duct.
• Verify approved material, joint, slope, cleanout, access, enclosure, and fan-connection details.
• Keep final code, listing, airflow, and manufacturer decisions in the red zone.

Open sales-floor finish

• Treat exposed duct as visible architectural work.
• Check centerline, elevation, rod plumb, seam/fitting rotation, screw pattern, labels, scratches, and sealant cleanup.
• Protect finished duct from lifts, chains, clamps, overspray, fireproofing, and dirty handling.

Before reopening or startup

• Remove temporary covers, debris, swarf, cookies, plastic, and shipping material.
• Verify dampers, access doors, actuators, sensors, and service panels remain usable.
• Confirm the designated startup, controls, TAB, or commissioning party owns operational verification.

Stop-and-verify lane

Final hanger spacing, structural attachment, duct construction, air distribution, refrigerated-case clearances, specialty exhaust, fire/smoke dampers, insulation systems, equipment requirements, shutdowns, and code decisions must come from the approved project documents and responsible parties.

Occupied retail, tie-ins & specialty exhaust

Continue into Batch 16 for shutdown windows, deli/bakery exhaust changes, food-area protection, existing-system demolition, rooftop water control, and shift handoff.