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VAV VV550 Controller Device Home Tabs: Instructions
the configured reheat enable setpoint. The range for the Reheat enable setpoint for Hydronic heat
is 70°F to 200°F (21.11°C to 93.33°C) The range for the Reheat enable setpoint for Electric heat is 70°F
to 100°F [21.11°C to 37.78°C]).
Reheat Priority: Choices are Local and Remote. This area is available only if the controller is using
space temperature control.
• Local: Select this option to use local reheat before remote reheat.
• Remote: Select this option to use remote reheat before local reheat.
Fan Configuration
Fan Present: This dialog box should be checked if the unit has a fan. Rover automatically changes
the entry to 0 (None). When the value of this field is not None, the configuration of Output 3 is set
to Normally Open.
Fan Type: Select the type of fan used by the VAV VV550 Controller. If you edit the unit type field,
Valid Selections: Parallel, Series.
Parallel Fan Control: This entry will determine if a parallel fan will be controlled based on zone
temperature or on flow conditions. The entry field on this line will disappear if the unit does not
have a parallel fan.
Parallel Fan Setup: If "Parallel fan control" has been edited to "Space Temperature" the fan control
offset will be entered as a temperature offset (.3° - 8°F) which will be added to the heating set point.
If "Parallel fan control" has been edited to "Primary Flow" this line will be entered as a percent (0
to 100%)
Note: See the Sequence of Operations section of this manual for details on parallel fan operation.
Box Setup: Select the proper Setup type. The selectable item is either a "Trane F style" unit
manufactured by Trane or "Generic" if the VV550 controller is mounted on some one else's VAV
unit. The unit type information is maintained in the controller's EEPROM. When Trane F style unit
is selected it will also show the inlet size and type in inches. The entry field on this line will disappear
if the unit does not have Trane F style unit selected
Note: See CNT-PRC003-EN if retrofitting a VV550/1 controller onto someone else's VAV unit.
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