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MUA-SVP01A-EN • Direct-Fired Indoor and Outdoor Units 25
Functions
input. A switch is used in conjunction with each resistor. When a switch is closed,
the resistance at the controller input changes. This allows the controller to
identify which switch has closed. The controller is programmed to associate each
different resistance with a specific function. For example when the optional
clogged filter switch is closed between the appropriate terminals on the unit's
terminal strip located in the unit's main control panel, this tells the controller that
the filters are clogged, and it notifies the user through the local user interface.
See the Typical Wiring Schematic section of this manual for more information.
Clock Set
The Clock Set function is used to set the current time and date as well as enabling
Daylight Saving Time. To set the clock scroll through the menu tree, locate the
Clockset branch, select Date, and enter a new date and time. Select DST to enable
Daylight Saving Time. Daylight Saving Time is the default. If the unit is installed
in the southern hemisphere, Sou Hem must be enabled. The default is not Sou
Hem. For you convenience Daylight Saving Time has been preprogrammed for
the next several years. To reset the starting and ending DST dates scroll through
the DST menu tree, locate the desired year, and enter a new date.