DDC Control System Assembly
The direct-digital controller and sensor set that runs the unit: duct-pressure fan control, discharge-temperature coil sequencing, economizer logic, and BACnet integration. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
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Bill of materials
8 top-level lines · 14 rows shown · 219 parts total · indented to 3 levels| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | DDC Controller Board 6 parts | air-handling-unit-ddc-board | 1× | 1 | 193 | assembly |
| 1.1 | Bare PCB | pcb-bare | 1× | 1 | — | part |
| 1.2 | Microcontroller | mcu | 1× | 1 | — | part |
| 1.3 | SMD Passive (R/C/L) | smd-passives | 180× | 180 | — | part |
| 1.4 | Relay | relay | 2× | 2 | — | part |
| 1.5 | Connector | connector | 8× | 8 | — | part |
| 1.6 | Power Supply | power-supply | 1× | 1 | — | part |
| 2 | Duct Temperature Sensor | air-handling-unit-temp-sensor | 4× | 4 | — | part |
| 3 | Humidity Sensor | air-handling-unit-humidity-sensor | 2× | 2 | — | part |
| 4 | Pressure Sensor | pressure-sensor | 2× | 2 | — | part |
| 5 | Coil Valve & Actuator | air-handling-unit-valve-actuator | 2× | 2 | — | part |
| 6 | Relay | relay | 4× | 4 | — | part |
| 7 | Wire Bundle | wire-bundle | 2× | 2 | — | part |
| 8 | Connector | connector | 10× | 10 | — | part |
Used in 1 assembly
Sourcing — likely vendors
Companies that make this · indicative price $0.50–$100 · MOQ & lead are typical| Vendor | HQ | Specialty | MOQ | Lead time |
|---|---|---|---|---|
| 🇨🇳Foxconn foxconn.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| flex.com ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| dixoninfo.com ↗ | Noida, IN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| bydelectronic.com ↗ | Shenzhen, CN | Electronics contract mfg | 1,000 pcs | 6–10 wks |
| venture.com.sg ↗ | Singapore | Electronics contract mfg | 1,000 pcs | 6–10 wks |