# Instance: 2.3 + 3.4 — BMS Controller Panels

Module: [bms/controller-panel](../../../_playbook/modules/bms/controller-panel.md)
WBS leaves: 2.3 (supply), 3.4 (installation)

## Project-specific values

- **Panel count:** 11 panels (per A4) — see `05-working-docs/A4-panel-schedule.yaml`.
- **Distribution:**
  - Lower Ground: PNL-PL-LG (calorifier/HW), PNL-BLR-LG (boiler), PNL-PM-LG (power meters)
  - Basement BOH: PNL-AIR-BSMT
  - Ground Floor: PNL-AIR-GF (lobby/restaurant), PNL-CASINO-GF (casino)
  - 2nd Floor: PNL-CH-PLANT-2F (chiller plant), PNL-AIR-2F (air-handling)
  - 3rd Floor: PNL-AIR-3F (amenity)
  - Roofdeck: PNL-AIR-ROOF (DOAS/PAHU/HW-roof), PNL-CT-ROOF (cooling towers)
- **Controllers:** 20 DDC controllers total (per A4) — sized at 1 controller per ~25 physical I/O points.
- **I/O modules:** sized to carry ~474 points (per A1: 137 AI + 56 AO + 176 DI + 14 DO + 79 HLI + 12 Network drops).
- **Enclosure:** lockable steel cabinet, IP54 minimum, 800×600×250 mm typical, with 24 V PSU and breaker disconnect.
- **Power:** 1× 20 A 230 V 1-φ per panel from local panelboard (per A7 / A-007).
- **MS/TP termination:** each panel gateways onto floor BACnet/IP via local edge switch.

## Quantities driving BOQ

- 11× field panels with enclosures.
- 20× DDC controllers.
- I/O modules per A4 panel-by-panel detail.
- Installation: ~180 hr of B4 manhours (panel mounting + wiring + labelling).