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GUIDE SPECIFICATIONS — 579F/580F180-300 AND 581A155,180 SIZE UNITS (cont)
31. Return Air Enthalpy Sensor (EconoMi$er IV or
EconoMi$er2):
The return air enthalpy sensor shall be used with the
EconoMi$er IV or EconoMi$er2 device. When used
in conjunction with an outdoor air enthalpy sensor,
the controller will provide differential enthalpy
control.
32. Return Air Temperature Sensor (EconoMi$er IV or
EconoMi$er2):
The return air temperature sensor shall be used with
the EconoMi$er IV or EconoMi$er2 device. When
used in conjunction with the standard outdoor air
temperature sensor, the EconoMi$er IV or
EconoMi$er2 device will provide differential tempera-
ture control.
33. Indoor Air Quality (CO
2
) Room Sensor (EconoMi$er
IV):
Sensor shall have the ability to provide demand ven-
tilation control through the EconoMi$er IV. The IAQ
sensor shall be wall mounted with an LED display in
parts per million. The set point shall have adjustment
capability.
34. Humidistat:
Field-installed, wall-mounted humidistat is used to
control activation of the dehumidification package.
The humidistat can be set for humidity levels
between 20% and 80% relative humidity.
579F/580F/581A155-300