Greenheck PGD1000W00, Справочное руководство

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Microprocessor Controller for MUA 12
®
Unit Enable
The controller is equipped with several menus to help guide users with altering program parameters. The following
menus can be accessed by pressing the button. To enter the desired menu, press the button.
The Unit Enable menu allows the user to enable and disable the unit through the
controller. Reference sequence of operation for additional unit starts/stop details.
The unit ships from the factory in a disabled state. To allow the unit to operate, the
controller must receive a run command from the remote start input. Please see
unit schematics to verify location.
Jumper unit terminals R - G to allow the unit
to operate.
Change to (Enabled/Disabled):
Enables user to manually turn unit on/off via
display. Unit terminal G must have 24 VAC power to enable the unit.
Outdoor Air Reset Function
45°
50°
55°
60°
65°
50° 55° 60° 65° 70°
Outside Air Temperature (°F)
Supply Air Set Point
(°
F)
70°
75°
Control Variables
The Control Variables menu allows the user to view and adjust unit control
parameters.
r
eseT
m
odes For
T
emperaTure
c
onTrol
Reset Mode selections are available for both occupied and unoccupied operation.
Unoccupied Unit Operation is available when Unoccupied Reset Mode is
selected to Normal Operation or Recirculation with Unoccupied Setpoints. The
Unoccupied Reset Mode will hide when Night Setback or Off is selected for
Unoccupied Unit Operation.
Setpoint Selections:
Supply Temp Control – The supply discharge setpoint is a constant value (e.g.
72°F). Reference Temperature Setpoint screen for setpoint adjustment.
Space Reset – The controller will reset the supply air temperature setpoint to
maintain the space temperature setpoint (requires space temp sensor). Reference
the Temperature Setpoint screen for space setpoint adjustment.
OA Reset – The controller monitors the OA temperature and adjusts the desired
supply temperature setpoint accordingly. For example, when the OA is below
55°F, the controller will change the supply setpoint to 70°F. If the OA is above
65°F, the controller will change the supply setpoint to 55°F. If the OA temperature
is between 55°F and 65°F, the supply setpoint changes according to the OA
reset function. A visual representation of the OA reset function is shown below.
Reference Outside Setpoints for min and max outside air limits.
Control Variables
Temp Control
The Temperature Control menu allows the user to view and adjust temperature
control conditions of the unit. Economizer setpoint adjustment is also found at
this location if the unit is equipped with outside air and recirculation dampers.
Menu