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Human Interface Module
(1U65 = Local 6U66 = Remote)
The Human Interface (HI) Module illustrated in Figure 1 is
the device which enables the customer, building owner, or
contractor, to communicate to the unit the necessary pa-
rameters for unit operation.
The local (unit mounted) Human Interface and the Remote
Human Interface Panels' functions are identical, except for
Service mode which is not available on the Remote Human
Interface Panel.
The local HI Module is located in the unit's main control
panel. A small door located in the unit's control panel door
allows access to the HI Module's keypad and display win-
dow.
There is a 2 line by 40 character LCD screen which pro-
vides status information for the various unit functions as
well as menus used to set or modify the operating param-
eters. There is a 16 key keypad adjacent to the LCD screen
which allows the operator to scroll through the various
menus and make adjustments to the setpoints, etc...
The information displayed in the LCD window will be top
level unit status information unless the operator initiates
other displays.
Figure 1
Human Interface Module
General Information
General Operation
At power-up, the Human Interface LCD will display one of
three initial screens illustrated in the "General Status" sec-
tion.
1. Unit Status (Unit Off or Stopped) (The unit is configured
and operational, but is not running). This screen shows
state, mode, and function information when the unit is off
or stopped.
2. Unit Status (Unit On) (The unit is configured and opera-
tional, and is running). This screen shows state, mode,
and function information when the unit is on.
3. No Configuration (the unit needs to be configured). This
screen shows that required configuration data is missing.
The LCD screen has a backlight that makes the information
easier to read. The light will go out if no keys are pressed
for 30 minutes. If it goes out, simply press the STATUS key.
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