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CONTROLS (cont)
OPERATING MODES
BP —
Building Pressurization: Indoor fan on, economizer energized to fully open position, power exhaust disabled.
E—
Evacuation: Indoor fan off, economizer energized to fully open position, power exhaust on (open).
SD —
Complete Unit Shutdown: Breaks 24-v power to the thermostat.
SP —
Smoke Purge: Indoor fan on, economizer energized to fully open position, power exhaust on.
See Legend on page 14.
*Included in power exhaust accessory.
LEGEND
Field Wiring
Field-Supplied Switch
Typical Smoke Control/Fire Shutdown Wiring — 542J150,180