Greenheck DOAS v8.1 Reference Manual page 30

Control Variables
Advanced
Advanced Setpoints
30 Microprocessor Controller for DOAS
Menu
o e c
verride conomizer
When the heating control is in the manual mode, use the arrow buttons to vary
the output of the economizer ramp. This value may have an effect on the energy
recovery device and/or the modulating outside air damper position.
o p
verride reheaT
This screen appears when a preheater is installed in the unit for energy recovery
defrost. Use the arrow buttons to override the preheat.
o e r
verride nergy ecovery
This screen only appears if modulating wheel frost control is equipped. When the
defrost control ramp is in manual mode, use the arrow buttons to vary the defrost
output.
0% = Maximum Wheel Speed
100% = Minimum Wheel Speed
o e r
verride nergy ecovery
This screen appears whenever an energy recovery device is installed. Use the
arrow buttons when Manual Override is enabled to override the speed or position
of the energy recovery device.
o p c
verride ressure onTrol
This screen will be available when active head pressure control is installed in the
unit. When in manual mode, with the compressors off, the modulating fan speed
can be altered by using the arrows to change the output. The fixed stage fan can
be enabled by changing the output to On.
The Advanced Setpoints Menus allows the user to view and modify network
settings. The service password (9998) is required to make changes.
o d
ccupied ehumidiFicaTion
Reference control variables for possible Occupied dehumidification call methods.
u d
noccupied ehumidiFicaTion
Reference control variables for possible unoccupied dehumidification call
methods.
u u o
noccupied niT peraTion
Possible unoccupied unit operation methods include:
• Unit Off
• Night Setback Cycle
• Recirculation with Unoccupied Setpoints
• Normal Operation with Unoccupied Setpoints
onTrol
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