46
TK 56171-2-OP-EN
Single Zone Control Standard Display
This feature, if enabled in Guarded Access, allows Single Zone Control
operation to be selected by choosing the Main Menu and then selecting
Single Zone Control from the Mode Submenu. When this feature is selected,
all zones will be forced on and will control to the same selected setpoint. The
Single Zone Control Standard Display (
) functions the same
way as the other Standard Displays. The absence of the Cycle Sentry Icon at
the top of the display shows that the unit is operating in Continuous mode.
The box temperature for all zones is 35.8°F and all zones are controlling to a
35°F setpoint. The down-pointing arrow indicates that all zones are cooling.
The soft key labeled Setpoint allows the setpoint for all zones to be changed.
The soft key labeled Menu allows the Main Menu to be selected.
Figure 30.
Single Zone Control Standard Display
Operating the Unit in Single Zone Control Mode
The following differences exist when operating the unit in Single Zone
Control Mode:
•
Single Zone Control Mode will appear in the Mode Menu only if the
Single Zone Control feature has been enabled in the Guarded Access/
Main Menu Configuration Menu. If the feature is enabled, Single Zone
Control will appear in the Main Menu/Mode Menu.
•
If Single Zone Control operation is selected, all zones will be forced on
and will control to the same setpoint. The Zone 1 sensors are used to
determine box temperature. All dividing wall(s) should be repositioned
to create one large compartment. With the exception of defrost, the
operating mode of each zone evaporator(s) will be the same when in this
mode. Unit control is based on the temperature sensors of Zone 1.
•
If Single Zone Control operation is selected, the Single Zone Standard
Display provides only one soft key labeled Set Point. This allows the
setpoint for all zones to be changed simultaneously.
