# 2.4 — HVAC Field Devices Supply

Module: [bms/field-devices-hvac](../../../_playbook/modules/bms/field-devices-hvac.md)

Covers WBS leaves 2.4.1–2.4.10.

| Field | Value | Source |
|-------|-------|--------|
| Temperature sensors (room/duct/immersion/OA) | ~110 (AI temp lines per A1) | A1 + B3 |
| Humidity sensors | ~30 | A1 |
| Pressure / DP / static-pressure transmitters | ~25 | A1 |
| Flow / BTU meters | ~6 (CHW headers + chiller + DOAS) | A1 + A2 |
| CO2 sensors (at AHU returns) | 12 (10 BOH + 2 DOAS) | BMS-01 + Q-010 |
| CO sensors (basement parking + casino return) | ~6 | BMS-01 + Q-010 |
| VOC / smoke-sanitizer sensors (Casino) | 2 | BMS-02 |
| 2-way modulating valve actuators | ~25 | A1 AO valve lines |
| Damper actuators (OA / RA modulating) | ~30 | A1 AO damper lines |
| Auxiliary contact / status relays | ~150 (across all DI status / trip / H-O-A) | A1 DI |
| VFD / HLI gateway integration kits | ~12 (DOAS, AHU VFDs, heat pumps via BACnet) | A1 HLI |
| Heat-recovery wheel monitoring (Casino DOAS) | 2 | BMS-02 |
| Brand | Siemens / Belimo (pending Q-008) | A-007 |
| FRLS jacket | yes per A-017 + cable spec rules | A3 |