InControl
FOX
high
high
medium
documented
Why It Matters
R&D reason and business value.
FCU fans run for long hours and can waste direct fan energy while also affecting chiller load indirectly.
Module Behaviour
Use lower fan speed when zone temperature is close to setpoint, use high speed only during large deviation or morning pull-down, reduce fan speed during low-load hours, and avoid unnecessary high-speed operation after the store is stable.
How To Test
Compare 3-5 similar business days with default/fixed fan logic against 3-5 similar days with automatic fan-speed enabled. Keep setpoints and operating hours identical.
Success Metrics
FCU kWh/day, FCU kWh during business hours, FCU kWh per cooling degree hour, total HVAC kWh, average/peak chiller kW, and comfort complaints.
Next Action
Define exact fan-speed rules and select first FOX test window.