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IMPORTANT: Table 7 illustrates the complete hierar-
chy. Your menu parameters may be different depend-
ing on your configuration.
For example, if you do not have a DCV (CO
then none of the DCV parameters appear and only MIN
POS will display. If you have a CO
MIN and DCV MAX will appear AND if you have 2
speed fan DCV MIN (high and low speed) and DCV
MAX (high and low speed will appear).
NOTE: Some parameters in the menus use the letters MA
or MAT, indicating a mixed air temperature sensor location
before the cooling coil. This unit application has the control
sensor located after the cooling coil, in the fan section,
where it is designated as (Cooling) Supply Air Temperature
or SAT sensor.
RAV-180-01SI
) sensor,
2
sensor, the DCV
2
Specifications subject to change without notice.
SETUP AND CONFIGURATION
Before being placed into service, the W7220 economizer
module must be setup and configured for the installed
system.
IMPORTANT: During setup, the economizer module
is live at all times.
The setup process uses a hierarchical menu structure that
is easy to use. Press the ▲ and ▼ arrow buttons to move
forward and backward through the menus and press the
button to select and confirm setup item changes.
TIME-OUT AND SCREENSAVER
When no buttons have been pressed for 10 minutes, the
LCD displays a screen saver, which cycles through the
Status items. Each Status items displays in turn and cycles
to the next item after 5 seconds.
27
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