Product data

24
Controls (cont)
TYPICAL SMOKE CONTROL/FIRE SHUTDOWN WIRING — 50HJQ014,016
OPERATING MODES
BP — Building Pressurization: Evaporator fan on, economizer energized to fully open position, power exhaust disabled.
E—Evacuation: Evaporator 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: Evaporator fan on, economizer energized to fully open position, power exhaust on.
See Legend on page 25.
*Included in power exhaust accessory.
LEGEND
Field Wiring
Field-Supplied Switch