Auto-Zone Plus Section 3
Programming 3-45
Economizer Module
(Wetbulb) Read/Reset
Operations
If the Unit ID you entered was for the Economizer Module, the following menu will
appear. Any references in this section to wetbulb are referring to the Economizer
Module.
Wetbulb Menu
Wetbulb Status
1) Wetbulb Status
2) Setpoints
ESC) To Exit
1) Wetbulb
Status
View the current Outdoor Air
Temperature, Humidity, and calculated
Wetbulb Temperature.
2) Setpoints
View or change any of the available
setpoints for this Economizer Module.
WB # xx vl.xx
Outdoor Air: 76.9°F
Humidity...: 75 %
Wetbulb....: 71.3°F
Line 2 -
Current Outdoor Air Temperature reading. The
Outdoor Air Sensor must be installed on this unit. It
will not read a Global Broadcast of the Outdoor Air
Temperature from another controller.
Line 3 -
Current Outdoor Relative Humidity.
Line 4 -
Current calculation of the Wetbulb Temperature.
The formula for calculating Wetbulb is as follows:
Wetbulb = (0.315 x OutdoorAir x (Humidity ^ ¼))
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