Economizer with single enthalpy sensor, Economizer with dual enthalpy sensors, Economizer (single or dual) with power exhaust – Johnson Controls SUNLINE 2000 BQ 060 User Manual
Page 32: Motorized outdoor air dampers, High-pressure limit switch, Low-pressure limit switch, Freezestat, Economizer with single enthalpy, Sensor, Economizer with dual enthalpy
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